CN213403415U

CN213403415U - Wind noise prevention mechanism and pickup device

Info

Publication number: CN213403415U
Application number: CN202022755618.2U
Authority: CN
Inventors: 王传波
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-08
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a prevent wind mechanism and pickup apparatus of making an uproar, wherein, prevent wind the mechanism of making an uproar and include: the shell is enclosed to form an accommodating cavity, and a sound inlet and a sound outlet which are communicated with the accommodating cavity are formed in the shell; and the air guide piece is connected with the shell, is positioned in the accommodating cavity and is positioned in an area between the sound inlet hole and the sound outlet hole. The utility model discloses technical scheme prevent wind noise mechanism can reduce the wind noise of microphone.

Description

Wind noise prevention mechanism and pickup device

Technical Field

The utility model relates to an electronic equipment technical field, in particular to prevent wind mechanism of making an uproar and applied this pick-up device of preventing wind mechanism of making an uproar prevent wind.

Background

When the sound pickup device such as the microphone is used outdoors, particularly under the condition of large airflow speed such as running or riding, the microphone picks up wind sound to form calling noise, so that the definition of the microphone for picking up sound is influenced, and the using effect of the microphone is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent wind mechanism of making an uproar aims at reducing the wind noise of microphone.

In order to achieve the above object, the utility model provides a prevent wind mechanism of making an uproar, include:

the shell is enclosed to form an accommodating cavity, and a sound inlet and a sound outlet which are communicated with the accommodating cavity are formed in the shell; and

the air guide is connected with the shell and located in the accommodating cavity and in the area between the sound inlet hole and the sound outlet hole.

Optionally, the surface of the air guide facing the sound inlet hole is a curved surface.

Optionally, the surface of the air guide facing the sound inlet is arranged in a wave-shaped curved surface.

Optionally, the air guide member includes a first air guide end, a second air guide end, and a main body portion connected to the first air guide end and the second air guide end in a smooth transition manner, the first air guide end is close to the sound inlet, and the second air guide end is close to the sound outlet.

Optionally, the diameter of the cross section of the first wind guiding end is smaller than the diameter of the cross section of the second wind guiding end.

Optionally, the casing is provided with a plurality of sound inlet holes arranged at intervals, the number of the air guide members is multiple, and the plurality of air guide members are arranged in parallel along the arrangement direction of the sound inlet holes.

Optionally, the casing includes a top wall and a bottom wall that are arranged oppositely, the sound inlet is provided in the top wall, and the sound outlet is provided in the bottom wall.

Optionally, the top wall is an arcuate wall.

Optionally, the wind noise prevention mechanism further comprises a wind screen connected to the housing and covering the plurality of sound inlet holes.

The utility model also provides a pickup device, which comprises a microphone and a wind noise prevention mechanism;

prevent wind mechanism of making an uproar includes:

the air guide piece is connected with the shell, is positioned in the accommodating cavity and is positioned in an area between the sound inlet hole and the sound outlet hole;

and the front sound cavity of the microphone is communicated with the sound outlet of the wind noise prevention mechanism.

The utility model discloses technical scheme's prevent wind mechanism of making an uproar includes casing and air guide, and the air guide is installed in the intracavity that holds of casing to connect in the casing, this air guide specifically is located between the sound inlet and the sound outlet of casing. The air current of air is by advancing the sound hole entering and holding the intracavity back, can shelter from by the air guide before arriving the sound hole, and when the air current acted on the air guide, this air guide can reflect the air current, can not only change the direction of air current, can also weaken the energy of air current, makes the air flow and the air current intensity that can reach the sound hole reduce greatly.

The wind noise prevention mechanism is located at the upstream of the sound pickup device, the airflow is picked up through a sound pickup hole of the microphone, the wind noise prevention mechanism can effectively weaken the size and the strength of the airflow, and the wind noise picked up by the microphone is reduced, so that an effective signal picked up by the microphone is relatively strong, and the signal-to-noise ratio and the intelligibility of the sound pickup device to the effective signal are improved. The wind noise prevention mechanism can be widely applied to any product needing a microphone to pick up sound.

Drawings

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

Fig. 1 is a schematic structural diagram of an embodiment of the wind noise prevention mechanism of the present invention;

fig. 2 is a cross-sectional view of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Wind noise prevention mechanism	14	Second side wall
10	Shell body	30	Air guide
				11	Roof wall	31	First wind guide end
111	Sound inlet hole	32	Second wind guiding end
				12	Bottom wall	33	Main body part
121	Sound outlet	200	Microphone (CN)
				13	First side wall

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a wind noise prevention mechanism 100, wherein the wind noise prevention mechanism 100 can be applied to a sound pickup device with a microphone 200, and the sound pickup device with the microphone 200 can be an earphone, a mobile phone, a recording pen, or other related products.

With reference to fig. 1 and 2, the wind noise prevention mechanism 100 of the present invention includes a housing 10, the housing 10 encloses to form a containing cavity, and the housing 10 is provided with a sound inlet 111 and a sound outlet 121 for communicating with the containing cavity. When the wind noise prevention mechanism 100 is applied to a sound pickup apparatus, a microphone 200 in the sound pickup apparatus communicates with the sound outlet hole 121 of the wind noise prevention mechanism 100, specifically, the front sound cavity of the microphone 200 communicates with the sound outlet hole 121. In the sound pickup process of the sound pickup device, external sound waves enter the accommodating cavity from the sound inlet hole 111 of the wind noise prevention mechanism 100 and reach the front sound cavity of the microphone 200 through the sound outlet hole 121, so that the sound is picked up by the microphone 200.

The utility model discloses technical scheme's wind noise prevention mechanism 100 still includes air guide 30, and this air guide 30 is installed in holding the intracavity to be connected in casing 10, this air guide 30 specifically is located between casing 10's sound inlet 111 and sound outlet 121. After the air current of air gets into by sound inlet hole 111 and holds the intracavity, can shelter from by air guide 30 before reaching sound outlet hole 121, when the air current acted on air guide 30, this air guide 30 can reflect the air current, can not only change the direction of air current, can also weaken the energy of air current, make the air flow and the air current intensity that can reach sound outlet hole 121 reduce greatly.

The wind noise prevention mechanism 100 is located at the upstream of the sound pickup device, before airflow is picked up through a sound pickup hole of the microphone 200, the wind noise prevention mechanism 100 can effectively weaken the size and the strength of the airflow, and wind noise picked up by the microphone 200 is reduced, so that an effective signal picked up by the microphone 200 is relatively strong, and the signal-to-noise ratio and the intelligibility of the sound pickup device to the effective signal are improved. The wind noise prevention mechanism 100 can be widely applied to any product requiring the microphone 200 to pick up sound.

The wind noise prevention mechanism 100 may be an independent structure, and in the application process, the housing 10 of the wind noise prevention mechanism 100 is mounted on the housing of the sound pickup apparatus, and the sound pickup hole of the microphone 200 on the sound pickup apparatus is communicated with the sound outlet hole 121 of the wind noise prevention mechanism 100. The wind noise prevention mechanism 100 may also be integrated with the sound pickup apparatus, that is, the housing 10 of the wind noise prevention mechanism 100 and the housing 10 of the sound pickup apparatus are the same housing 10, and the microphone 200 is directly mounted on the housing 10, so that the front cavity of the microphone 200 may be communicated with the sound outlet 121 of the sound pickup mechanism, and the structure may further ensure the reliability and the sealing property of the connection between the microphone 200 and the wind noise prevention mechanism 100.

In order to further enhance the wind noise suppression effect of the wind noise prevention mechanism 100, the windward surface of the wind guide 30 may have a curved surface structure. Specifically, the surface of the air guide 30 facing the sound inlet hole 111 is curved. When the air flow enters the accommodating cavity from the sound inlet hole 111 and acts on the surface of the air guide member 30, the curved surface structure can gently guide the air flow so as to change the advancing direction of the air flow, and can also avoid the direct impact of the air flow to cause larger noise. The airflow can return along the original path under the guidance of the curved surface of the wind guide 30, or advance along the direction deviating from the sound outlet hole 121, and act on the inner wall of the casing 10 of the wind noise prevention mechanism 100, and is further reflected by the inner wall of the casing 10, and in the process of multiple reflections, the intensity of the airflow is more greatly weakened, and the wind noise of the airflow to the microphone 200 is further reduced.

The curved surface structure may be a wave-shaped curved surface structure, that is, the surface of the air guide 30 facing the air inlet hole is a wave-shaped curved surface structure. The wavy curved surface is a curved surface structure combining a bulge and a recess, and when the intensity of the airflow entering the accommodating cavity from the sound inlet hole 111 is high, the direction of the airflow can be changed for many times by the wavy curved surface, so that the intensity of the airflow is further weakened, and the wind noise caused by the airflow is further reduced.

The air guide member 30 may include a main body 33, and a first air guide end 31 and a second air guide end 32 located at two ends of the main body 33, wherein the cross sections of the first air guide end 31 and the second air guide end 32 are circular arc-shaped, and the main body 33 is connected with the first air guide end 31 and the second air guide end 32 in a smooth transition manner. The second wind guiding end 32 is located on a side of the first wind guiding end 31 away from the sound inlet hole 111, that is, the first wind guiding end 31 is close to the sound inlet hole 111, and the second wind guiding end 32 is close to the sound outlet hole 121. After the airflow enters the accommodating cavity from the sound inlet 111, the airflow is guided by the first air guiding end 31 and moves towards the second air guiding end 32 through the main body 33, and the first air guiding end 31, the main body 33 and the second air guiding end 32 can respectively guide the flow direction of the airflow at two sides in the airflow flowing direction, so that the airflow is dispersed. The placing direction of the air guide member 30 can also enable the sound to be picked up to move towards the second air guide end 32 along the first air guide end 31, so that the sound can smoothly reach the sound outlet hole 121, and the blocking of the air guide member 30 to the sound to be picked up is reduced.

Further, the diameter of the cross section of the first wind guiding end 31 can be made smaller than that of the second wind guiding end 32, and the cross section of the wind guiding member 30 is shaped like a water drop. The air guide 30 may be a water drop structure as a whole, that is, the first air guide end 31 and the second air guide end 32 are spherical, and the spherical first air guide end 31 and the spherical second air guide end 32 are smoothly connected to each other by the main body. The air guide 30 may have a columnar structure with a cross section in the shape of a water droplet.

Under this structure, because the diameter of first wind-guiding end 31 is less, only a small part of air current is reflected under the effect of first wind-guiding end 31, most air current is separated into a plurality of directions along the direction of first wind-guiding end 31, and respectively follow the surface of main part 33 and advance towards the direction of second wind-guiding end 32, the energy of air current can be weakened gently in this in-process, make the air current energy that reaches second wind-guiding end 32 weaker, because of the special shape of drop of water shape, second wind-guiding end 32 is more protruding than main part 33, the air current can follow the bellied direction of second wind-guiding end 32 after the buffering of main part 33, and the orientation is far away from sound outlet 121 direction and is advanced.

The casing 10 is provided with a plurality of sound inlet holes 111, and the sound inlet holes 111 may be uniformly arranged along the surface of the casing 10 at intervals. The number of the air guides 30 may be one, two, three, or more than three, and the air guides 30 are arranged in parallel along the arrangement direction of the sound inlet holes 111. After the airflow enters the accommodating cavity through the sound inlet holes 111, the airflow is blocked by the first air guiding ends 31 of the air guiding pieces 30, and is dispersed into multiple directions, and further guided and dispersed into more directions through the main body parts 33 and the second air guiding ends 32 of the air guiding pieces 30, so that the strength of the airflow is better weakened.

The casing 10 of the wind noise prevention mechanism 100 includes a top wall 11 and a bottom wall 12 which are oppositely arranged, the sound inlet hole 111 is arranged on the top wall 11, the sound outlet hole 121 is arranged on the bottom wall 12, and the sound pickup hole of the microphone 200 is communicated with the sound outlet hole 121 at the bottom of the wind noise prevention mechanism 100, so that the sound outlet hole 121 is located at the position where the wind noise energy is minimum. This ensures that the wind noise picked up by the microphone 200 is minimal. Casing 10 can also set up the screen cloth in sound outlet 121 department, and the screen cloth covers sound outlet 121, can further reduce wind and make an uproar.

The housing 10 further includes oppositely disposed first and

second sidewalls

13 and 14, and oppositely disposed third and fourth sidewalls. Wherein, the size and shape of the top wall 11 and the bottom wall 12 may be uniform, the size and shape of the first side wall 13 and the second side wall 14 may be uniform, and the size and shape of the third and fourth side walls may also be uniform, so that the housing 10 forms a square or rectangular parallelepiped structure, or a symmetrical structure.

A plurality of sound inlet holes 111 are evenly spaced on the top wall 11. The two ends of each wind guide 30 are respectively connected with the third side wall and the fourth side wall, and the plurality of wind guide 30 are arranged at intervals along the direction from the first side wall 13 to the second side wall 14.

The top surface of casing 10 can be the arc structure, and this arc structure can lead external air current for the air current flows along this arc structure's tangential direction, and the difficult direct impact top surface of air current, thereby reaches the effect that reduces wind and make an uproar. The curved configuration of the top wall 11 also enables the overall appearance of the wind noise prevention mechanism 100 to be compact.

The utility model discloses a prevent wind mechanism 100 of making an uproar can also set up on casing 10 and prevent wind the net, should prevent wind the net and connect in casing 10 to a plurality of sound holes 111 of intaking of shroud. The windproof net can be a net cloth, and the net cloth is arranged on the inner surface or the outer surface of the top wall 11, so that the windproof net can further block air flow.

The structure of the housing 10 can be such that the top wall 11 is directly made of steel mesh, that is, the first side wall 13, the second side wall 14, the third side wall and the fourth side wall are respectively connected with the four sides of the wall windproof net, and the top wall 11 which is arc-shaped in the structure can be directly formed by bending the steel mesh, so that the forming process is simple and the production and processing are convenient.

The above structure can also be implemented by performing a hollow processing at a corresponding position on the top wall 11 of the housing 10, and providing a steel mesh in the high hollow area.

When the air current flows through the steel mesh, the mesh and the steel wire cambered surface of steel mesh can reflect and lead the air current, weaken the intensity of air current. The screen cloth is arranged on the inner surface or the outer surface of the steel mesh, and can further block the airflow.

In the embodiment shown in fig. 2, the steel mesh is arc-shaped and is mounted on the top wall 11 of the housing 10, the steel mesh has a thickness h, and the thickness h of the steel mesh satisfies the following range: h is more than or equal to 0.15mm and less than or equal to 0.3 mm. Evenly distributed sound inlet 111 on the steel mesh, sound inlet 111's aperture is d, and sound inlet 111's aperture d satisfies the scope: d is more than or equal to 0.05mm and less than or equal to 0.2 mm. The aperture ratio of the steel mesh 13 is greater than 40%, the distribution range length of the sound inlet holes 111 is l, the width is w, and the length l satisfies: l is more than or equal to 4mm and less than or equal to 6mm, and the width w satisfies the following conditions: w is more than or equal to 1mm and less than or equal to 3mm, the surface on which the sound inlet holes 111 are distributed can be a plane or a curved surface or other special-shaped surfaces, and the length and the width are rectangular areas corresponding to the projection of the surface on which the sound inlet holes 111 are distributed. The screen cloth can be in holding the intracavity and attaching in casing 10, and this screen cloth can constitute by the knitting material, and its ventilative volume is q, and ventilative volume q satisfies: 3150L/m²≤q≤5825L/m². The steel mesh and the mesh cloth with the sound inlet holes 111 form a first wind noise prevention structure of the wind noise prevention mechanism 100, and wind energy is blocked and dredged from entering the accommodating cavity.

In the embodiment shown in fig. 2, the diameter of the first wind guiding end 31 of the wind guiding member 30 is D1, and D1 satisfies: d1 is more than or equal to 0.7mm and less than or equal to 1mm, the vertical distance between the first air guiding end 31 of the air guiding piece 30 and the top wall 11 is H1, and H1 meets the following requirements: h1 is more than or equal to 0.7mm and less than or equal to 2mm, the diameter of the second wind guide end 32 is D2, and D2 satisfies: d2 is more than or equal to 1.3mm and less than or equal to 1.5 mm. The distance from the center of the first wind guiding end 31 to the center of the second wind guiding end 32 of each wind guiding member 30 is H2, and H2 satisfies the following conditions: h2 is more than or equal to 3mm and less than or equal to 5mm, the distance between the second wind guide ends 32 of the adjacent wind guide pieces 30 is D3, and D3 meets the following requirements: d3 is not less than 0.6mm and not more than 1 mm. The air guide member 30 provided in the accommodating cavity of the housing 10 constitutes a second wind noise prevention structure of the wind noise prevention mechanism 100, which further improves the signal-to-noise ratio of the sound pickup apparatus.

It is understood that the above dimensions are only for individual products and do not limit the technical solution of the present invention. The utility model discloses technical scheme prevent wind mechanism of making an uproar 100 can be designed into not unidimensional according to practical application's needs.

The housing 10 of the wind noise prevention mechanism 100 may be made of a plastic material or a metal material.

The utility model also provides a pickup apparatus, this pickup apparatus include microphone 200 and prevent wind mechanism 100 of making an uproar, and the concrete structure of mechanism 100 of should preventing wind refers to above-mentioned embodiment, because this pickup apparatus has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The front sound cavity of the microphone 200 communicates with the sound outlet 121 of the wind noise prevention mechanism 100.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A wind noise prevention mechanism, comprising:

2. The wind noise prevention mechanism according to claim 1, wherein a surface of the wind guide facing the sound inlet hole is curved.

3. The wind noise prevention mechanism according to claim 2, wherein a surface of the wind guide facing the sound inlet hole is formed in a wave-shaped curved surface.

4. The wind noise prevention mechanism of claim 1, wherein said wind guide member comprises a first wind guide end and a second wind guide end, and a main body portion connecting said first wind guide end and said second wind guide end in smooth transition, said first wind guide end is adjacent to said sound inlet hole, and said second wind guide end is adjacent to said sound outlet hole.

5. The wind noise prevention mechanism of claim 4, wherein a diameter of a cross section of the first wind guiding end is smaller than a diameter of a cross section of the second wind guiding end.

6. The wind noise prevention mechanism according to any one of claims 1 to 5, wherein a plurality of sound inlet holes are provided at intervals in the housing, and a plurality of the wind guide members are provided in parallel along the arrangement direction of the sound inlet holes.

7. The wind noise prevention mechanism according to any one of claims 1 to 5, wherein the housing includes a top wall and a bottom wall that are disposed opposite to each other, the sound inlet hole is provided in the top wall, and the sound outlet hole is provided in the bottom wall.

8. The wind noise prevention mechanism of claim 7, wherein said top wall is an arcuate wall.

9. The wind noise prevention mechanism of claim 1, further comprising a wind screen coupled to the housing and covering the plurality of sound inlet holes.

10. A sound pickup apparatus comprising a microphone and the wind noise prevention mechanism according to any one of claims 1 to 9, wherein a front sound cavity of the microphone communicates with a sound outlet of the wind noise prevention mechanism.