CN217825263U

CN217825263U - Sound pickup device and communication equipment

Info

Publication number: CN217825263U
Application number: CN202221633300.XU
Authority: CN
Inventors: 刘际滨
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-15
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a pickup device and speech equipment, pickup device includes: an MIC module having a sound-collecting chamber; directional regulation module, it has directional regulation chamber, and directional regulation chamber is linked together with the pickup chamber, and directional regulation module is seted up a plurality of pickup holes that are linked together with directional regulation chamber, and the aperture of pickup hole is adjustable. The utility model discloses a pickup apparatus is through setting up directional regulation module for with pickup chamber intercommunication, at first, carry out directional pickup by directional regulation chamber of directional regulation module, and transmit to pickup chamber, gather by the MIC pickup subassembly that is arranged in pickup chamber. Secondly, the opening degree of each sound collecting hole is adjustable (the sound collecting hole is closed when the opening degree is 0), so that the adjustment of the sound collecting directivity is realized.

Description

Sound pickup device and communication equipment

Technical Field

The utility model relates to a pickup device and speech equipment, specifically speaking relates to a pickup device and speech equipment of adjustable directive property.

Background

Communication class equipment and have the equipment of recording function and radio reception function all need install MIC and come the radio reception, and current MIC adopts pressure type design more, and the omnidirectional pickup generally, the sound that different angles come has the same sensitivity, does not have the filtration of sound to pick up the characteristic, so this interference pronunciation around the equipment can influence user's experience effect very much. Or a microphone with a partially unidirectional characteristic achieves a certain directivity, but there is no way to adjust parameters such as the frequency characteristics of the picked-up sound.

Current MIC's pickup hole structure is mostly open, offers a hole on the shell of equipment promptly, and the inside in hole is direct to link to each other with the MIC electronic part, can also laminate a dust screen between MIC electronic part and hole for the dust proof. Because the hole is exposed in the external environment, dust or dirt is easily accumulated in the MIC sound pickup hole to block the sound pickup hole, so that the MIC sound pickup is disabled. In addition, the dust screen that current MIC pickup hole set up only can prevent dust, and is unable waterproof, has the problem of damaging inside electronic device of intaking easily.

Disclosure of Invention

The utility model discloses adopt the omni-directional pickup to current MIC, perhaps can only be the fixed finger pickup, have the nonadjustable technical problem of pickup direction, provide a pickup apparatus, can solve above-mentioned problem.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a sound pickup device comprising:

an MIC module having a sound-collecting chamber;

the directional adjusting module is provided with a directional adjusting cavity, the directional adjusting cavity is communicated with the pickup cavity, the directional adjusting module is provided with a plurality of pickup holes communicated with the directional adjusting cavity, and the opening degree of the pickup holes is adjustable.

The utility model discloses an in some embodiments, directional regulation module includes:

the first shell is internally provided with a directional adjusting cavity in a blocking manner, the first shell is provided with an assembling port and a first connecting port which are respectively communicated with the directional adjusting cavity, and the first connecting port is used for being communicated with the pickup cavity;

the base plate is fixed on the first shell and is blocked at the assembling port, and a plurality of pickup holes are formed in the base plate;

the cover plate is arranged on the outer side of the base plate, and the cover plate is provided with adjusting holes which correspond to the pickup holes one to one;

the shifting piece is arranged between the cover plate and the base plate, is positioned at the adjusting hole and is used for adjusting the opening of the adjusting hole.

In some embodiments of the present invention, the assembling hole and the first connecting hole are provided on two opposite side walls of the first housing.

The utility model discloses an in some embodiments, orientation on the base plate the protrusion is formed with leading note portion on the side in pick-up chamber, leading note portion with the pick-up hole one-to-one sets up, just leading note portion encloses the fender and is in the week side in pick-up hole.

In some embodiments of the present invention, the inner diameter of the sound guiding portion is larger than the inner diameter of the sound pickup hole.

The utility model discloses an in some embodiments, the plectrum with the regulation hole one-to-one sets up, just the plectrum can be used for adjusting at its place plane translation the aperture of regulation hole.

The utility model discloses an in some embodiments, the apron orientation be formed with the guide way on the side of base plate, the plectrum sets up in the guide way, can be in the length direction of guide way be translational motion.

The utility model discloses an in some embodiments, the MIC module includes:

the second shell is internally provided with a sound-collecting cavity, a second connecting port is formed in the second shell, and the first connecting port is hermetically connected with the second connecting port;

a MIC pickup assembly disposed in the pickup cavity.

In some embodiments of the utility model, the directional regulation chamber with still be provided with the water proof membrane between the sound-collecting chamber.

The utility model discloses a speech equipment has been proposed simultaneously, and it includes any preceding recording pickup apparatus.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the utility model discloses a pickup device is through setting up directional regulation module for with pickup chamber intercommunication, at first, carry out directional pickup by the directional regulation chamber of directional regulation module, and transmit to the pickup chamber, gather by the MIC pickup subassembly that is arranged in the pickup chamber. Secondly, the opening degree of each sound collecting hole is adjustable (the sound collecting hole is closed when the opening degree is 0), so that the adjustment of the sound collecting directivity is realized.

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a sound pickup apparatus according to the present invention;

FIG. 2 is an exploded view of the directional adjustment module 2 of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a cross-sectional view of the directional adjustment module 2 of FIG. 1;

fig. 5 is a pickup schematic diagram of an embodiment of the pickup apparatus according to the present invention.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting 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, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Example one

The embodiment provides a pickup apparatus, as shown in fig. 1, including MIC module 1 and directional regulation module 2, wherein, MIC module 1 has pickup chamber 10, and directional regulation module 2 has directional regulation chamber 20, and directional regulation chamber 20 is linked together with pickup chamber 10, and directional regulation module 2 is seted up a plurality of and the directional sound hole 21 that is linked together that adjusts the chamber, and the aperture of picking up sound hole 21 is adjustable.

The pickup apparatus of this embodiment, through setting up directional regulation module 2 for with pickup chamber 10 intercommunication, by directional regulation module's directional regulation chamber 20 carry out directional pickup, outside sound transmits to directional regulation chamber 20 through pickup hole 21, then transmits to pickup chamber 10 through directional regulation chamber 20, finally gathers by the MIC pickup subassembly that is arranged in pickup chamber 10. The sound pickup hole 21 is opened in a directional direction, so that the sound pickup device picks up sound in the directional direction.

Secondly, through setting up that each sound picking hole 21 aperture is adjustable, it can be understood that, should pick up hole 21 and close when sound picking hole 21 aperture is 0 aperture, should pick up hole 21 and open for full when sound picking hole 21 aperture is 100% aperture, and can also realize 0 ~ 100% arbitrary aperture control range, when certain sound picking hole 21 opens, the pickup of the orientation that this sound picking hole 21 faces is collectable, when certain sound picking hole 21 closes, the pickup of the orientation that this sound picking hole 21 faces is not collectable, and then realized the regulation of the directionality of pickup.

In some embodiments of the present invention, as shown in fig. 2, the directional adjusting module 2 includes a first housing 22, a base plate 23, a cover plate 24 and a dial piece 25, the directional adjusting cavity 20 is located inside the first housing 22, the first housing 22 is provided with an assembling port 221 and a first connecting port 222, which are respectively communicated with the directional adjusting cavity 20, and the first connecting port 222 is used for being communicated with the sound-collecting cavity 10.

The base plate 23 is fixed on the first housing 22 and sealed at the assembling port 221, and a plurality of sound collecting holes 21 are opened on the base plate 23. The cover plate 24 is arranged outside the base plate 23, and the cover plate 24 is provided with adjusting holes 241 corresponding to the sound pickup holes 21 one by one. The external sound with a specific direction sequentially enters the directional adjusting cavity 20 through the adjusting hole 241 and the pickup hole 21, then is transmitted to the pickup cavity 10 through the directional adjusting cavity 20, and finally is collected by the MIC pickup assembly located in the pickup cavity.

The shifting piece 25 is arranged between the cover plate 24 and the base plate 23, is clamped by the cover plate 24 and the base plate 23, and can play a role in limiting the shifting piece 25 in the direction perpendicular to the plane where the shifting piece is located. As shown in fig. 3, the pick 25 is disposed near the adjusting hole 241 for adjusting the opening of the adjusting hole 241.

Specifically, through stirring plectrum 25 and moving in its place plane, it can dodge regulation hole 241 or will adjust hole 241 shutoff, and can realize adjusting the aperture regulation of hole 241 through stirring plectrum 25 to different positions.

In some embodiments of the present invention, the mounting opening 221 and the first connection opening 222 are disposed on two opposite sidewalls of the first housing 22. The MIC pickup assembly in this scheme can be based on pressure formula pickup principle, and the sound collection principle is as follows.

The sound pick-up device comprises a plurality of sound pick-up holes 21, and due to the different distances from the plurality of sound pick-up holes 21 to the MIC sound pick-up assembly, interference occurs between sound waves, so that the total sound pressure on the diaphragm of the MIC sound pick-up assembly is related to the distribution of the sound pick-up holes 21. Fig. 5 is a simple schematic diagram of the operation of the sound pickup apparatus, which is in a long tube shape and is theoretically derived by a spherical wave model, and the following theoretical formula of the directional characteristic D of the microphone can be obtained:

。

where λ is the wavelength of the spherical wave and θ is the angle of the incident sound wave to the pickup plane, as shown, when θ =0 °, D =1, and the value of D also depends on the value of π b/λ for different θ's. When π b/λ <1, D ≈ 1, the force acting on the diaphragm is independent of θ, i.e., the directivity is nearly uniform. As the frequency increases, λ becomes smaller, and the directivity of sound pickup becomes more and more significant. FIG. 5 shows two directivity diagrams (D vs. θ) for π b/λ values. As can be seen from fig. 5, the directivity of sound transmission from b = λ is already unidirectional, and becomes sharper as the wavelength parameter continues to become smaller; of course, the larger b, the lower the frequency of generating directivity, i.e., the larger b requires a longer tube body of the directivity adjustment module 2.

This scheme is according to the rationale of above-mentioned directive property model, and the aperture through picking up sound hole 21 is adjustable, can adjust the directive property structure module of size.

As shown in fig. 2, the opening and closing can be realized by the structure of the dial piece 25 in fig. 2 through the dial piece 25 (one or more than one can be simultaneously opened and closed) of the sound pickup hole 21 which can be independently controlled to be opened and closed, and the function of directional pickup of voices with different frequency characteristics can be realized.

The sound pickup device of the embodiment can be used for various audio consumer electronics products with different forms, such as telephone traffic earphones with directivity requirements, conference systems with directivity requirements and the like.

In some embodiments of the present invention, the substrate 23 is formed with the leading portion 231 toward the side of the sound collecting cavity, the leading portion 231 is disposed corresponding to the sound collecting hole 21, and the leading portion 231 surrounds the periphery of the sound collecting hole 21. The sound entering from the sound collecting hole 21 is guided and transmitted through the sound guide 231.

In some embodiments of the present invention, as shown in fig. 4, the inner diameter of the sound guiding part 231 is larger than the inner diameter of the sound collecting hole 21. The sound guide 231 having a relatively large inner diameter can also amplify the sound after the sound enters from the sound pickup hole 21 having a small hole.

The utility model discloses an in some embodiments, plectrum 25 and regulation hole 241 one-to-one setting, and plectrum 25 can be used for adjusting the aperture of regulation hole 241 at its place plane translation. The user can manually stir the poking sheet 25 to act, and the purpose of flexibly adjusting the opening of the adjusting hole according to actual needs is achieved.

In some embodiments of the present invention, as shown in the figure, the cover plate 24 is formed with a guide slot 242 on a side surface facing the substrate 23, the shifting piece 25 is disposed in the guide slot 242, the guide slot 242 is used for guiding the shifting piece 25, and the shifting piece can be in the length direction of the guide slot 242 to perform the translational motion. The movement of the shifting sheet 25 can be manually shifted by a user, and can also be automatically controlled by arranging a driving mechanism.

The utility model discloses an in some embodiments, MIC module 1 includes second shell 11 and MIC pickup subassembly (not shown in the figure), and second shell 11 is inside to be formed with pickup chamber 10, has seted up the second connector on the second shell 11, and first connector 222 and second connector sealing connection realize adjusting the intercommunication in chamber 20 and pickup chamber 10.

The MIC pickup assembly is disposed in pickup cavity 10. The sound with specific direction outside enters the direction-oriented adjusting cavity 20 through the adjusting hole 241 and the sound pickup hole 21 in sequence, then is transmitted to the sound pickup cavity 10 through the second connecting port and the first connecting port 222, and finally is collected by the MIC sound pickup assembly in the sound pickup cavity 10.

In some embodiments of the present invention, a waterproof film 26 is further disposed between the directional adjustment cavity 20 and the sound pickup cavity 10. The waterproof membrane 26 may be disposed in the second connection port and may also be disposed in the first connection port 222. Sound picking hole 21 itself has the effect of preliminary manger plate, but it can't avoid water to get into directional regulation chamber 20 completely when water is more, and waterproof membrane 26 can further play and prevent to get into the effect that directional regulation chamber 20 got into the sound picking chamber, and then can protect the MIC pickup assembly who is arranged in the sound picking chamber. It will be appreciated that the waterproof membrane 26 has an acoustically transparent function but is impermeable to water.

Example two

The utility model discloses provide a speech equipment simultaneously, this speech equipment can be the audio frequency class consumer electronics product of various different forms, for example have the traffic earphone of directive property requirement, possess the meeting system etc. of directive property requirement, and this speech equipment includes the pickup apparatus for directional pickup. The sound pickup apparatus used in the call device in this embodiment can be found in the description of the first embodiment, and is not described herein again.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. A sound pickup apparatus, comprising:

the MIC module is provided with a sound-collecting cavity;

2. The pickup apparatus according to claim 1, wherein the direction adjustment module comprises:

the base plate is fixed on the first shell and sealed at the assembling port, and a plurality of pickup holes are formed in the base plate;

3. The sound pickup device as claimed in claim 2, wherein the fitting port and the first connection port are provided on opposite side walls of the first housing.

4. The sound pickup device as claimed in claim 2, wherein a sound guide is formed on a side surface of the base plate facing the sound pickup cavity, the sound guide is disposed in one-to-one correspondence with the sound pickup holes, and the sound guide is located around the sound pickup holes.

5. The sound pickup device according to claim 4, wherein an inner diameter of the sound leading portion is larger than an inner diameter of the sound pickup hole.

6. The pickup apparatus according to claim 2, wherein the plectrum is provided in one-to-one correspondence with the adjustment holes, and the plectrum can translate on a plane where the plectrum is located to adjust an opening degree of the adjustment holes.

7. The sound pickup apparatus according to claim 6, wherein a guide groove is formed in a side surface of the cover plate facing the base plate, and the paddle is provided in the guide groove so as to be capable of translational movement in a longitudinal direction of the guide groove.

8. The pickup apparatus of claim 2, wherein the MIC module comprises:

a MIC pickup assembly disposed in the pickup cavity.

9. The sound pickup device according to claim 8, wherein a waterproof film is further provided between the direction adjustment chamber and the sound pickup chamber.

10. A telephony device comprising a sound pickup apparatus as claimed in any one of claims 1 to 9.