Protective device for silicon microphone packaging
The design of dustproof and protective mechanisms solves the problem of silicon microphones being susceptible to intrusion, achieving effective protection and cleaning, and ensuring the performance and lifespan of the microphone.
Patent Information
- Application Number
- CN202422976394.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing silicon microphones are susceptible to intrusion of foreign objects and moisture, which can lead to chip failure and affect their lifespan and performance.
An encapsulation device comprising a dustproof mechanism and a protective mechanism is designed. The dustproof mechanism blocks dust and moisture through a dust hopper, a dustproof net, and a permeable membrane, while the protective mechanism protects the sound inlet through a slide, a magnetic block, and a protective cover, ensuring the sound channel is clean and sealed.
It effectively prevents dust and moisture from entering the microphone, maintains sensitivity and clarity, extends equipment life, is simple and convenient to operate, and reduces maintenance costs.
Smart Images
Figure CN223613480U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to silicon microphone packaging technical field, concretely is the protection device of silicon microphone packaging. BACKGROUND
[0002] Silicon microphone is the microphone based on MEMS technology, simply speaking is a capacitor integrated on micro silicon wafer, can adopt the surface mounting technology to manufacture, can bear very high reflow soldering temperature, is easy to integrate with CMOS technology and other audio circuits, and has improved noise elimination performance, and the silicon microphone needs to be packaged when producing.
[0003] MEMS chip includes substrate and fixed diaphragm and back electrode on the substrate, and the diaphragm and back electrode constitute a capacitor and are integrated on the silicon wafer, and the sound hole is opened for the propagation of sound, and the sound enters the silicon microphone from the sound hole and acts on the diaphragm of MEMS chip, and the distance between the diaphragm and back electrode is changed through the vibration of diaphragm, so that the sound signal is converted into electric signal.
[0004] The existing silicon microphone has the defect that foreign matters in the external environment are easy to enter the internal part of silicon microphone from the sound hole, and the interval between silicon diaphragm and silicon back electrode plate is small, is very sensitive to tiny foreign particles, is easy to cause silicon microphone to fail, and the water or dust in the external environment is easy to enter the internal part of silicon microphone from the sound hole, thereby damaging the chip, and causing the chip to be unable to be normally used. UTILITY MODEL CONTENTS
[0005] The utility model discloses a protection device for silicon microphone packaging, to solve the problem that the silicon microphone exists in prior art, and the defect that foreign matters in the external environment are easy to enter the internal part of silicon microphone from the sound hole, and the interval between silicon diaphragm and silicon back electrode plate is small, is very sensitive to tiny foreign particles, is easy to cause silicon microphone to fail, and the water or dust in the external environment is easy to enter the internal part of silicon microphone from the sound hole, thereby damaging the chip, and causing the chip to be unable to be normally used.
[0006] To realize the above-mentioned purpose, the utility model provides the following technical scheme: the protection device for silicon microphone packaging, including the base plate, the upper end of base plate is provided with the baffle ring, the upper end of base plate is provided with the chip body, the upper end of base plate is detachably connected with the shell, the upper end of shell is opened to the sound hole on one side, the inner wall of sound hole is connected with the dustproof mechanism of screw thread, the upper end of shell is detachably connected with the protection mechanism.
[0007] Preferably, the lower end of the baffle ring is fixedly connected with the upper end of the base plate, and the lower end of the chip body is movably connected with the upper end of the base plate.
[0008] Preferably, the dustproof mechanism comprises a dustproof hopper, an outer wall of the dustproof hopper is threadedly connected with an inner wall of the sound inlet hole, an upper end of the dustproof hopper is provided with a dustproof screen one, a lower end of the dustproof screen one is provided with a permeable membrane, an outer side wall of the dustproof hopper is provided with a sound inlet, an inner wall of the sound inlet is fixedly connected with a dustproof screen two, and an inner bottom wall of the dustproof hopper is bonded with a water-absorbing cotton layer.
[0009] Preferably, the upper end of the dustproof hopper is detachably connected with the lower end of the dustproof screen one, and the lower end of the dustproof screen one is bonded with the upper end of the permeable membrane.
[0010] Preferably, the sound inlets are annularly and equidistantly distributed on the outer side of the dustproof hopper, and the inner walls are all provided with a dustproof screen two.
[0011] Preferably, threads are formed between the outer wall of the dustproof hopper and the inner wall of the sound inlet hole.
[0012] Preferably, the protection mechanism comprises a sliding groove, an outer wall of the sliding groove is embeddedly connected with an upper end face of the shell, a bottom wall of the sliding groove is provided with an iron bar, an upper end of the iron bar is provided with a magnetic block, the magnetic block is fixedly connected with a sliding block at an upper end thereof, a limiting hole is formed through a middle portion of the sliding block, the sliding block is fixedly connected with a protection cover at an upper end thereof, both sides of the sliding groove are provided with mounting grooves, the inner wall of the mounting grooves is fixedly connected with a spring at one side thereof, the other side of the spring is fixedly connected with a limiting rod, and the limiting rod is fixedly connected with a pushing rod at an upper end thereof.
[0013] Preferably, the bottom wall of the sliding groove is fixedly connected with the lower end of the iron bar, and the upper end of the iron bar is magnetically adsorbed with the lower end of the magnetic block.
[0014] Preferably, the sliding blocks are symmetrically arranged at both sides of the lower end of the protection cover, and the shapes of the sliding blocks and the sliding groove are matched.
[0015] Preferably, the mounting grooves are located at both sides of the horizontal position of the sliding groove and are symmetrically embedded in the top wall of the shell.
[0016] Compared with the prior art, the dustproof mechanism can effectively prevent dust and particles from entering the microphone, and facilitate smooth sound passage, thereby ensuring the sensitivity and clarity of the microphone.
[0017] 1. The dustproof mechanism can effectively prevent dust and particles from entering the microphone, and facilitate smooth sound passage, thereby ensuring the sensitivity and clarity of the microphone. 2. The dustproof hopper is tightly matched with the sound inlet hole of the shell, and the stability and sealing performance of the dustproof hopper are ensured through thread connection. 3. The dustproof screen one and the dustproof screen two can filter out larger particles and further block small dust particles through the permeable membrane, thereby ensuring that the sound passage into the microphone is clean. 4. The addition of the water-absorbing cotton layer further enhances the moisture absorption capacity of the dustproof mechanism, effectively prevents the influence of moisture on the internal circuit of the microphone, and prolongs the service life of the equipment.
[0018] 2、The protection mechanism of the application can effectively prevent the invasion of water vapor and moisture, thereby protecting the internal circuit of the microphone from corrosion and damage. When the microphone is not in use, the operator can quickly fix and unlock the sliding block and the protective cover by operating the toggle lever, thereby moving the protective cover to block the sound inlet hole to prevent dust and water from entering. In addition, the structure of the protective cover ensures that it can maintain good physical and chemical stability during long-term use and will not deform or degrade due to temperature changes or chemical erosion. The installation and removal process of the protection mechanism is simple and easy to operate, and the operator does not need professional tools to complete the operation. In addition, the maintenance and cleaning of the protection mechanism are also very convenient, and the operator can easily replace the dust screen in the sound inlet hole or clean the water-absorbing cotton layer to ensure that it maintains the best working state for a long time. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structure schematic diagram of the whole side view explosion of the utility model;
[0020] Figure 2 It is a structure schematic diagram of the dustproof mechanism of the utility model;
[0021] Figure 3 It is a structure schematic diagram of the protection mechanism of the utility model;
[0022] Figure 4 It is a structure schematic diagram of the whole of the utility model.
[0023] Reference numerals in the drawing: 1, base plate; 2, retaining ring; 3, chip body; 4, shell; 5, sound inlet hole; 6, dustproof mechanism; 7, protection mechanism; 61, dustproof hopper; 62, dust screen one; 63, permeable membrane; 64, sound inlet; 65, dust screen two; 66, water-absorbing cotton layer; 71, sliding groove; 72, iron bar; 73, magnetic block; 74, sliding block; 75, limiting hole; 76, protective cover; 77, mounting groove; 78, spring; 79, limiting rod; 710, toggle lever. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0025] Embodiment: as Figure 1 - Figure 4The utility model provides a protective device's technical scheme of silicon microphone package, including substrate 1, the upper end of substrate 1 is provided with baffle 2, the upper end of substrate 1 is provided with chip body 3, the upper end of substrate 1 is detachably connected with shell 4, the upper end of shell 4 one side is provided with sound inlet hole 5, the inner wall of sound inlet hole 5 is threadedly connected with dustproof mechanism 6, the upper end of shell 4 is detachably connected with protection mechanism 7, the lower end of baffle 2 is fixedly connected with the upper end of substrate 1, and the lower end of chip body 3 is movably connected with the upper end of substrate 1.
[0026] Please refer to Figure 1 、 Figure 2 and Figure 4 , dustproof mechanism 6 includes dust hopper 61, the outer wall of dust hopper 61 is threadedly connected with the inner wall of sound inlet hole 5, dust hopper 61 is provided with dust screen one 62 in the upper end, dust screen one 62 is provided with permeation membrane 63 in the lower end, dust hopper 61 is provided with sound inlet 64 in the outer side wall, dust screen two 65 is fixedly connected in the inner wall of sound inlet 64, dust hopper 61 is attached with water-absorbing cotton layer 66 in the inside bottom wall, the upper end of dust hopper 61 is detachably connected with the lower end of dust screen one 62, the lower end of dust screen one 62 is attached with the upper end of permeation membrane 63, sound inlet 64 is annularly equidistantly distributed in the outer side of dust hopper 61, and the inner wall is all provided with a dust screen two 65, and the outer wall of dust hopper 61 and the inner wall of sound inlet hole 5 are all provided with the screw thread that is adapted.
[0027] Please refer to Figure 1 、 Figure 3 and Figure 4 , protection mechanism 7 includes sliding groove 71, the outer wall of sliding groove 71 is embeddedly connected with the upper end of shell 4, the bottom wall of sliding groove 71 is provided with iron strip 72, the upper end of iron strip 72 is provided with magnetic block 73, magnetic block 73 is fixedly connected with sliding block 74 in the upper end, the middle part of sliding block 74 is provided with limiting hole 75, sliding block 74 is fixedly connected with protection cover 76 in the upper end, both sides of sliding groove 71 are provided with mounting groove 77, the inner wall one side of mounting groove 77 is fixedly connected with spring 78, the other side of spring 78 is fixedly connected with limiting rod 79, the upper end of limiting rod 79 is fixedly connected with the rod 710 of stirring, the bottom wall of sliding groove 71 is fixedly connected with the lower end of iron strip 72, the upper end of iron strip 72 is magnetically adsorbedly connected with the lower end of magnetic block 73, sliding block 74 is symmetrically arranged in the lower end both sides of protection cover 76, and the shape of sliding block 74 and sliding groove 71 is adapted, and mounting groove 77 is located in the horizontal position both sides of sliding groove 71, and is symmetrically inlaid in the top wall of shell 4.
[0028] Working principle: first through the protection mechanism 7 including chute 71, iron bar 72, magnetic block 73, sliding block 74, limiting hole 75, protective cover 76, installation groove 77, spring 78, limiting rod 79 and the lever 710, chute 71 is fixed on the upper end of the shell 4, iron bar 72 and magnetic block 73 are fixed on the inner side of chute 71 respectively, sliding block 74 can slide in chute 71, limiting hole 75 is used for limiting rod 79 to fix sliding block 74 and the position of protective cover 76, protective cover 76 is fixed on sliding block 74, installation groove 77 is used for installing limiting rod 79, spring 78 is used for providing the elastic force of limiting rod 79, limiting rod 79 is used for limiting the position of protective cover 76, the lever 710 is used for driving sliding block 74, in actual use, when the sound inlet hole 5 needs to be protected and shielded, the operator can drive the lever 710, make the lever 710 slide in the installation groove 77, and compress the spring 78, at this time, the spring 78 stores elastic energy, then, slide the protective cover 76 to the upper side of the sound inlet hole 5, then rotate the protective cover 76, so that the sliding block 74 on both sides of the lower end of the protective cover 76 is horizontally arranged with the limiting rod 79, the magnetic block 73 on the lower end of the sliding block 74 is magnetically attached to the iron bar 72, to avoid the protective cover 76 from falling off the chute 71, the sliding block 74 drives the protective cover 76 to move, which is convenient for the user to protect, the movement of the protective cover 76 is limited by the limiting rod 79 and the limiting hole 75, to ensure that the protective cover 76 is fixed in the correct position, when the limiting rod 79 is completely inserted into the limiting hole 75, the spring 78 loses the restraint, the deformation of the spring 78 generates elastic force to push the limiting rod 79 and one end of the lever 710 to fix the sliding block 74 and the protective cover 76, to avoid damaging the microphone, through the double protection of the dustproof mechanism 6 and the protection mechanism 7, not only effectively prevents dust and particulate matter from damaging the microphone, but also provides convenient cleaning and replacement operation, greatly improves the service life and use efficiency of the microphone, in the protection mechanism 7, the setting of the dustproof mechanism 6 can effectively block dust and impurities from entering the microphone, while ensuring clear transmission of sound, the bottom wall of the dust bucket 61 is provided with a water absorption cotton layer 66, which can further prevent water from entering the shell 4, the sound inlet 64 is provided with a dust screen 65, which can further prevent dust from entering the shell 4, the sound inlet hole 5 is provided with a dust bucket 61, the top slot of the dust bucket 61 is provided with a dust screen 62 and a permeable membrane 63, and the outer side wall of the dust bucket 61 is provided with four sound inlets 64, which can prevent dust from entering and water from entering the shell 4, in addition, the detachable setting of the dustproof mechanism 6 makes maintenance and replacement simple and convenient, the operator can replace the dust screen 62, dust screen 65, permeable membrane 63 and water absorption cotton layer 66 according to the pollution degree of the actual use environment, to maintain the best protection effect, not only improves the reliability of the equipment, but also reduces the long-term maintenance cost, the protective device can adapt to various harsh working environments, and ensure that the performance of the microphone is not affected by external factors, then the lower end of the protective cover 76 is provided with a chute 71 matched with the sliding block 74,The inner wall of the sliding groove 71 is tightly attached to the outer wall of the sliding block 74 to ensure that the protective cover 76 can smoothly slide in the sliding groove 71, the limiting hole 75 of the sliding block 74 is the same shape as the limiting rod 79 to facilitate the limiting rod 79 to be arranged in the limiting hole 75, improve the moving efficiency of the protective cover 76, the magnetic attraction between the magnetic block 73 and the iron strip 72 is sufficient to keep the protective cover 76 stable in the normal working state, at the same time, the operator can easily fix or release the protective cover 76 by turning the rod 710, which is convenient for moving the protective cover 76 to the opening or closing position, in addition, the material of the protective cover 76 is preferably a metal material with high corrosion resistance and strength to ensure the durability and protection effect during long-term use, the opening and closing action of the protective cover 76 is simple and intuitive, and the operator can complete the operation without professional tools, which greatly improves the usability of the product, in actual application, the protective mechanism 7 can effectively prevent dust, water vapor and other external substances from entering the inside of the microphone, thereby prolonging the service life of the equipment and maintaining the clarity of the sound quality, at the same time, the quick opening and closing function of the protective cover 76 enables the operator to quickly clean or check the internal structure when necessary, without tedious disassembly steps, which greatly facilitates daily maintenance and use.
[0029] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A protective device for a silicon microphone package, characterized by: The utility model provides a chip protection device, including the substrate (1), the upper end of substrate (1) is provided with baffle ring (2), the upper end of substrate (1) is provided with chip body (3), the upper end of detachable connection of substrate (1) is provided with shell (4), the upper end one side of shell (4) is provided with sound hole (5), the inner wall threaded connection of sound hole (5) is provided with dustproof mechanism (6), the upper end of detachable connection of shell (4) is provided with protection mechanism (7).
2. The protective device for a silicon microphone package of claim 1, wherein: The lower end of the baffle ring (2) is fixedly connected with the upper end of the substrate (1), and the lower end of the chip body (3) is movably connected with the upper end of the substrate (1).
3. The protective device for a silicon microphone package of claim 1, wherein: The dustproof mechanism (6) comprises a dust hopper (61), the outer wall of the dust hopper (61) is threadedly connected with the inner wall of the sound hole (5), the upper end of the dust hopper (61) is provided with a first dust screen (62), the lower end of the first dust screen (62) is provided with a permeable membrane (63), the outer side wall of the dust hopper (61) is provided with a sound inlet (64), the inner wall of the sound inlet (64) is fixedly connected with a second dust screen (65), and the inner bottom wall of the dust hopper (61) is bonded with a water-absorbing cotton layer (66).
4. The protective device for a silicon microphone package of claim 3, wherein: The upper end of the dust hopper (61) is detachably connected with the lower end of the first dust screen (62), and the lower end of the first dust screen (62) is bonded with the upper end of the permeable membrane (63).
5. The protective device for a silicon microphone package of claim 3, wherein: The sound inlet (64) is annularly and equidistantly distributed on the outer side of the dust hopper (61), and the inner wall of each sound inlet (64) is provided with a second dust screen (65).
6. The protective device for a silicon microphone package of claim 3, wherein: The outer wall of the dust hopper (61) and the inner wall of the sound hole (5) are both provided with matching threads.
7. The protective device for a silicon microphone package of claim 1, wherein: The protection mechanism (7) comprises a sliding groove (71), the outer wall of the sliding groove (71) is embeddedly connected with the upper end of the shell (4), the bottom wall of the sliding groove (71) is provided with an iron bar (72), the upper end of the iron bar (72) is provided with a magnetic block (73), the upper end of the magnetic block (73) is fixedly connected with a sliding block (74), the middle part of the sliding block (74) is provided with a limiting hole (75), the upper end of the sliding block (74) is fixedly connected with a protective cover (76), both sides of the sliding groove (71) are provided with a mounting groove (77), one side of the inner wall of the mounting groove (77) is fixedly connected with a spring (78), the other side of the spring (78) is fixedly connected with a limiting rod (79), and the upper end of the limiting rod (79) is fixedly connected with a pushing rod (710).
8. The protective device for a silicon microphone package of claim 7, wherein: The bottom wall of the sliding groove (71) is fixedly connected with the lower end of the iron bar (72), and the upper end of the iron bar (72) is magnetically adsorbed with the lower end of the magnetic block (73).
9. The protective device for a silicon microphone package of claim 7, wherein: The sliding block (74) is symmetrically arranged on both sides of the lower end of the protective cover (76), and the shape of the sliding block (74) is matched with the shape of the sliding groove (71).
10. The protective device for a silicon microphone package of claim 7, wherein: The mounting groove (77) is located on both sides of the horizontal position of the sliding groove (71) and is symmetrically embedded in the top wall of the shell (4).