CN215187373U - Pickup structure and pickup device - Google Patents
Pickup structure and pickup device Download PDFInfo
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- CN215187373U CN215187373U CN202121163858.1U CN202121163858U CN215187373U CN 215187373 U CN215187373 U CN 215187373U CN 202121163858 U CN202121163858 U CN 202121163858U CN 215187373 U CN215187373 U CN 215187373U
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Abstract
The utility model relates to a pickup structure and pickup apparatus, this pickup apparatus include the pickup structure, and this pickup structure includes: a housing; the sound transmission hole is arranged on the shell; the bending hole is arranged on the upper inner side of the shell and communicated with the sound transmission hole to form an L shape; a circuit board disposed within the housing; the circuit board sound transmission hole is arranged on the circuit board; the waterproof sound-transmitting membrane is arranged between the circuit board sound-transmitting hole and the bending hole; and a microphone disposed on the circuit board. The utility model provides a pickup apparatus sets up the hole of bending and communicates into L shape with the sound-penetrating hole, has taken into account waterproof and anti-riot requirement, can not guaranteed waterproof performance simultaneously by easy invasion and destruction of foreign matter, and avoids the resonant cavity that heterotypic sound hole formed to the influence of sound frequency as far as possible, provides the basis of acoustics for carrying out speech recognition.
Description
Technical Field
The utility model relates to the field of communication technology, in particular to pickup structure and pickup device.
Background
The existing pickup device mostly adopts a mode of combining a straight hole on a shell and a waterproof membrane to realize a waterproof pickup function. Specifically, in the sound pickup device with the anti-riot function, a large-area right-angle hole is used, and then a waterproof film is pasted on the electret microphone or glue is solidified in the wall body of the electret microphone, so that the functions of preventing foreign matter from entering and preventing water are achieved. However, the above sound pickup apparatus has many disadvantages, such as poor acoustic performance of the sound cavity with the right-angled hole, and in the occasion with high requirements for sound recognition and sound quality, the recognition effect and sound quality are affected. In addition, the cured glue is used for realizing a waterproof function, and a small amount of air bubbles exist in the hidden glue after the cured glue is cured, so that the air bubbles can invade the electret microphone after a long time, and the service life of the electret microphone is influenced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to the aforesaid not enough, provide a pickup structure and pickup apparatus.
The utility model discloses a realize through following technical scheme:
a sound pickup structure, comprising:
a housing;
the sound transmission hole is arranged on the shell;
the bending hole is arranged on the upper inner side of the shell and communicated with the sound transmission hole to form an L shape;
a circuit board disposed within the housing;
the circuit board sound transmission hole is arranged on the circuit board;
the waterproof sound-transmitting membrane is arranged between the circuit board sound-transmitting hole and the bending hole; and
and the microphone is arranged on the circuit board.
Further, a pickup structure, the bottom surface in hole of bending be to sound-transparent hole slope sets up.
Further, a pickup structure, waterproof sound-transmitting membrane be rubber and sound-transmitting membrane superimposed integrated into one piece structure mutually.
Further, in the pickup structure, the rubber surface of the waterproof sound-transmitting membrane covers the bending hole, and the circuit board sound-transmitting hole is attached to the sound-transmitting membrane surface of the waterproof sound-transmitting membrane.
Further, the sound pickup structure, the microphone is located on the circuit board sound transmission hole.
Further, a pickup structure, the casing include the protecgulum and with the back lid of protecgulum lock.
Further, a pickup structure, waterproof sound-transmitting membrane the circuit board with the microphone set up in the casing, sound-transmitting hole with the hole of bending set up in on the protecgulum.
A sound pickup apparatus includes the sound pickup structure described in any one of the above.
Further, a pickup apparatus, this pickup apparatus include 4 pickup structure, 4 pickup structure set up in be the matrix and distribute in the casing.
The utility model has the advantages and effects that:
1. the utility model provides a pickup structure sets up the hole of bending and communicates into L shape with the sound-permeable hole, has compromise waterproof and anti-riot requirement, can not guaranteed waterproof performance simultaneously by easy invasion and destruction of foreign matter.
2. The utility model provides a hole bottom surface that bends of pickup structure sets up for the slope, avoids the resonant cavity that heterotypic phonic pore formed to the influence of sound frequency as far as possible, provides the basis of acoustics for carrying out speech recognition under this scene.
3. The utility model provides a waterproof sound-transmitting membrane that pickup structure adopted is rubber and sound-transmitting membrane superimposed integrated into one piece structure mutually, and with microphone beading on the circuit board, has solved sealed bubble problem of gluing, has also improved assembly efficiency simultaneously.
4. The utility model provides a pick-up device has compromise waterproof and anti-riot requirement, and can not be by easy invasion of foreign matter and destruction to improve the SNR through the algorithm, realize functions such as directional pickup.
Drawings
Fig. 1 is a schematic structural diagram of a sound pickup apparatus according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a sound pickup structure of the sound pickup apparatus provided by the present invention.
Description of reference numerals: 10-pickup structure, 1-waterproof sound-transmitting membrane, 2-circuit board sound-transmitting hole, 3-microphone, 4-circuit board, 5-front cover, 6-bending hole and 7-sound-transmitting hole.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following drawings in the embodiments of the present invention are combined to perform more detailed description on the technical solution in the embodiments of the present invention. The described embodiments are some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:
in the description of the present invention, it is to be understood that, unless otherwise specified, "a plurality" means two or more; the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a sound pickup apparatus according to an embodiment of the present invention. This pickup apparatus is including setting up 4 pickup structures 10 that are the matrix distribution in the casing, and two microphones about and form the array, improves the SNR through the algorithm, realizes functions such as directional pickup.
Fig. 2 shows a schematic structural diagram of a sound pickup structure of the sound pickup apparatus provided by the present invention. The sound pickup structure 10 includes a housing, a waterproof sound-transmitting membrane 1, a circuit board 4, and a microphone 3. The housing includes a front cover 5 and a rear cover (not shown) that is engaged with the front cover 5. The front cover and the rear cover form a sealing cavity by using waterproof rubber pads, and the whole shell is protected. The shell is provided with sound-transmitting holes 7, and the sound-transmitting holes 7 are directly communicated into the shell in a through hole mode. The upper inner side of the shell is provided with a bending hole 6, the bending hole 6 is communicated with the sound transmission hole 7 to form an L shape (L shape in figure 2) to form an L-shaped sound cavity, and the invasion of foreign matters is prevented. Specifically, as shown in fig. 2, the upper surface of the bending hole 6 is open, the bottom surface thereof is connected to a part of the side wall of the sound-transmitting hole 7 to have a reverse-shape in cross section, and a part of the side wall (not connected to the bottom surface) of the bending hole 6 is integrated with the other part of the side wall (excluding the side wall part connected to the bottom surface of the bending hole 6) of the sound-transmitting hole 7. The sound-transmitting hole 7 and the bent hole 6 are provided in the front cover 5. The volume of the L-shaped acoustic cavity should be as small as possible, with less loss of low frequency sound effects for smaller volumes of the resonant cavity based on the angle of the frequency response. Meanwhile, the resonance frequency inflection point of the cavity is improved, the influence of the whole sound channel on the sound frequency is reduced, and the audio recognition effect is improved. Specifically, the bottom surface of the bent hole 6 is inclined toward the sound-transmitting hole 7. That is, the bending hole 6 is in a horn shape, the hole depth of the bending hole gradually decreases from the connection part of the bending hole and the sound transmission hole 7, the structure reduces the volume of the resonant cavity, the high-frequency part of the frequency response moves backwards, and the influence on the low frequency is reduced.
The circuit board 4 is arranged in the shell, the circuit board sound-transmitting hole 2 is arranged on the circuit board 4, and the microphone 3 is arranged on the circuit board 4. Specifically, the microphone 3 is located on the circuit board sound-transmitting hole 2 of the circuit board 4. The waterproof sound-transmitting membrane 1, the circuit board 4 and the microphone 3 are arranged in the housing. The waterproof sound-transmitting membrane 1 is arranged between the circuit board sound-transmitting hole 2 and the bending hole 6, and the waterproof sound-transmitting membrane 1 and the microphone 3 are respectively positioned on two sides of the circuit board 4. The waterproof sound-transmitting membrane 1 is an integrally formed structure formed by overlapping rubber and a sound-transmitting membrane. The superimposing means may be, but is not limited to, a pasting means. The waterproof sound-transmitting membrane 1 covers the bending hole 6, and the circuit board 4 covers the waterproof sound-transmitting membrane 1 and is tightly pressed. Sound is transmitted to the inside of the microphone 3 through the sound transmitting hole 7, the bending hole 6, the waterproof sound transmitting membrane 1 and the circuit board sound transmitting hole 2. Sound can be transmitted to the microphone through the waterproof sound-transmitting membrane, while liquid is blocked outside by the waterproof sound-transmitting membrane. After assembly, the sound-transmitting holes face downwards, and the invading liquid can be discharged by using gravity.
The rubber surface of the waterproof sound-transmitting membrane 1 covers the bending hole 6, and the circuit board sound-transmitting hole 2 is attached to the sound-transmitting membrane surface of the waterproof sound-transmitting membrane 1. When the foreign matter enters the L-shaped sound cavity, the rubber surface of the waterproof sound-transmitting membrane 1 has certain toughness and strength, and the foreign matter is prevented from entering the shell.
The sound transmission holes 7 are circular holes, the influence of the circular holes on sound transmission is minimum, and the size of the circular holes is determined by practical application and the selection of the diameter of foreign matter invasion and the size of the sound holes. In the scene of explosion-proof and water-proof, the shell of the sound pickup device needs to be made of a metal panel with certain thickness and hardness to perform explosion-proof treatment, so that the shell and the inside of the sound pickup device are prevented from being damaged artificially. The thickness and hardness are determined by ensuring that the shell does not deform under certain impact force, or the deformation degree does not exceed a specified value.
The above embodiments are only used to illustrate the technical solutions of the present invention, and are not used to limit the scope of the present invention. However, all equivalent changes and modifications made within the scope of the present invention should be considered as falling within the scope of the present invention.
Claims (9)
1. A pickup structure, characterized in that, this pickup structure includes:
a housing;
a sound-transmitting hole (7) provided in the housing;
the bending hole (6) is arranged on the upper inner side of the shell and communicated with the sound transmission hole (7) to form an L shape;
a circuit board (4) disposed within the housing;
the circuit board sound transmission hole (2) is arranged on the circuit board (4);
the waterproof sound-transmitting membrane (1) is arranged between the circuit board sound-transmitting hole (2) and the bending hole (6); and
and the microphone (3) is arranged on the circuit board (4).
2. A pick-up structure according to claim 1, characterized in that the bottom surface of the bending hole (6) is inclined towards the sound-transmitting hole (7).
3. A sound pick-up structure according to claim 1, wherein the waterproof sound-transmitting membrane (1) is an integral structure formed by overlapping rubber and sound-transmitting membrane.
4. A sound pick-up structure according to claim 3, wherein the rubber surface of the waterproof sound-transmitting membrane (1) covers the bending hole (6), and the circuit board sound-transmitting hole (2) is attached to the sound-transmitting membrane surface of the waterproof sound-transmitting membrane (1).
5. A sound pick-up structure according to claim 1, characterised in that the microphone (3) is located in the circuit board sound-transmitting hole (2).
6. A sound pick-up structure according to claim 1, wherein the housing comprises a front cover (5) and a rear cover which is snap-fitted to the front cover (5).
7. A sound pick-up structure according to claim 6, wherein the waterproof sound-transmitting membrane (1), the circuit board (4) and the microphone (3) are arranged in the housing, and the sound-transmitting hole (7) and the bending hole (6) are arranged in the front cover (5).
8. A sound pick-up device, characterized in that it comprises a sound pick-up structure (10) according to any of claims 1 to 7.
9. The pickup device as claimed in claim 8, wherein the pickup device comprises 4 pickup structures (10), and the 4 pickup structures (10) are disposed in the housing in a matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121163858.1U CN215187373U (en) | 2021-05-27 | 2021-05-27 | Pickup structure and pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121163858.1U CN215187373U (en) | 2021-05-27 | 2021-05-27 | Pickup structure and pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215187373U true CN215187373U (en) | 2021-12-14 |
Family
ID=79372828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121163858.1U Active CN215187373U (en) | 2021-05-27 | 2021-05-27 | Pickup structure and pickup device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215187373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199487A1 (en) * | 2021-03-24 | 2022-09-29 | 华为技术有限公司 | Sound pickup structure for microphone and electronic terminal device |
-
2021
- 2021-05-27 CN CN202121163858.1U patent/CN215187373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199487A1 (en) * | 2021-03-24 | 2022-09-29 | 华为技术有限公司 | Sound pickup structure for microphone and electronic terminal device |
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