Reduce the wind noise structure of headphones

Abstract

The present invention belongs to the technical field of earphones, and in particular relates to an earphone wind noise reducing structure, comprising an earphone shell and a microphone; a sound guide channel is provided in the earphone shell, and the sound guide channel is provided with at least one turn; a first mounting groove and a second mounting groove are respectively provided at both ends of the sound guide channel in the earphone shell, and a wind noise reducing layer is adapted to be installed in the first mounting groove and the second mounting groove, and the microphone is installed beside the second mounting groove; a microphone hole is provided on the outer wall of the earphone shell, and the microphone hole is connected with the first mounting groove; external sound enters from the microphone hole, and wind noise passes through the first mounting groove, the sound guide channel and the second mounting groove in sequence, the wind noise reducing layer in the first mounting groove can absorb and reduce most of the wind noise, the corner in the sound guide channel can reduce part of the wind noise again, and the wind noise reducing layer in the second mounting groove can absorb and reduce the remaining wind noise again, and finally the wind noise entering the microphone position has been largely eliminated, and the wind noise is basically eliminated, the effect of reducing wind noise is good, and the sound quality of listening to music with earphones is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of earphones, and in particular relates to a structure for reducing wind noise of earphones. Background Art

[0002] Earphones (Earphones; Headphones; Head-sets; Earpieces) are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears.

[0003] Microphone is one of the indispensable components of current headphone products. Existing TWS headphones are getting smaller and smaller, and TWS headphones on the market generally have the function of active noise reduction, which is mainly achieved by software to reduce wind noise and improve the sound quality of headphones.

[0004] Active noise reduction is to collect noise through a microphone, and then after a series of software and hardware algorithms calculated and designed by acoustic engineers, the circuit generates a reverse sound wave opposite to the noise, which is emitted through the speaker. Eventually, the noise and the reverse sound wave cancel each other out to achieve noise reduction. However, since the sound unit of the active noise reduction headset will emit additional sound waves to cancel out the noise, some sound details will be lost and the sound quality will be compromised, especially for wind noise in the environment. The formation of wind noise is mainly caused by the wind blowing onto the microphone of the headset when walking, exercising or running, which will produce a whirring noise, seriously interfering with the sound quality of the user's listening to the song. At present, the active noise reduction method of the headset cannot achieve a significant reduction in wind noise for the time being, and the effect of reducing wind noise is general, and it is impossible to further optimize the sound quality of the headset. Summary of the invention

[0005] The purpose of the present invention is to provide a structure for reducing wind noise of headphones, aiming to solve the technical problem that the active noise reduction method of headphones in the prior art cannot temporarily achieve a significant reduction in wind noise, the effect of reducing wind noise is general, and the sound quality of the headphones cannot be further optimized.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a structure for reducing wind noise of headphones, including a headphone shell and a microphone; a sound guide channel is provided in the headphone shell, and the sound guide channel has at least one bend; a first mounting groove and a second mounting groove are respectively provided at both ends of the sound guide channel in the headphone shell, and the first mounting groove and the second mounting groove are evenly connected to the sound guide channel; a wind noise reducing layer is adapted to be installed in the first mounting groove and the second mounting groove, and the microphone is installed on the side of the second mounting groove; a microphone hole is provided on the outer wall of the headphone shell, and the microphone hole is connected to the first mounting groove.

[0007] Optionally, at least one wind shield is provided in the sound guiding channel, and a gap is provided between the wind shield and the sound guiding channel.

[0008] Optionally, the sound guide channel is provided with a turn, which divides the sound guide channel into two channel sections connected in sequence, and the two channels are respectively connected to the first mounting groove and the second mounting groove; at least one wind shield block is provided in each channel section.

[0009] Optionally, the sound guide channel is provided with four turns, and the four turns divide the sound guide channel into five channel sections connected in sequence, and the head channel and the tail channel of the five channels are respectively connected to the first mounting groove and the second mounting groove; at least one wind shield block is provided in each channel section.

[0010] Optionally, two adjacent wind shielding blocks in the sound guiding channel are respectively arranged on opposite side walls of the sound guiding channel.

[0011] Optionally, the first mounting groove, the sound guide channel and the second mounting groove are excavated on the inner wall of the earphone shell, so that openings are formed on the upper sides of the first mounting groove, the sound guide channel and the second mounting groove; a cover plate covers the openings, so that the first mounting groove, the sound guide channel and the second mounting groove form a sealed cavity.

[0012] Optionally, the cover plate is a circuit board, the microphone is mounted on the circuit board and is electrically connected to the circuit board; the microphone is in communication with the second mounting groove.

[0013] Optionally, the first mounting groove, the sound guide channel and the second mounting groove are obliquely arranged on the inner wall of the earphone shell, so that the inner wall of the earphone shell at the peripheral position of the opening forms an inclined inner wall, and the circuit board is installed on the inclined inner wall.

[0014] Optionally, the inner wall of the earphone shell is provided with a plurality of positioning posts around the sound guide channel, and the circuit board is penetrated with a plurality of positioning holes, and each of the positioning posts is adapted to be plugged into one of the positioning holes.

[0015] Optionally, the wind noise reducing layer is a sponge layer, a foam layer or a mesh layer.

[0016] Compared with the prior art, the earphone wind noise reduction structure provided by the embodiment of the present invention has one of the following technical effects:

[0017] When using the headphones, the outside sound enters from the microphone hole, and the wind noise enters the first mounting slot. The wind noise reducing layer in the first mounting slot can absorb and reduce most of the wind noise; then the wind noise enters the sound guide channel, and the corner in the sound guide channel can reduce part of the wind noise again; then, the wind noise enters the second mounting slot, and the wind noise reducing layer in the second mounting slot can absorb and reduce the remaining wind noise again, and finally enters the microphone position. The wind noise has been greatly eliminated, and the wind noise is basically eliminated. The effect of reducing wind noise is good. Even if the wind blows on the microphone of the headphones when walking, exercising or running, it will not produce whirring noise, thereby improving the sound quality of listening to music with the headphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 The figure is a schematic diagram of the structure of reducing wind noise of headphones according to the first embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the partial structure of the earphone wind noise reduction structure according to the first embodiment of the present invention.

[0021] Figure 3 This is a partial structural exploded view of the headphone wind noise reduction structure according to the first embodiment of the present invention.

[0022] Figure 4 This is a front view of the earphone shell according to the first embodiment of the present invention.

[0023] Figure 5 It is a front view of the earphone shell according to the second embodiment of the present invention.

[0024] Figure 6 For the present invention Figure 2 sectional view of .

[0025] Among them, the reference numerals in the figure are:

[0026] Earphone 10, earphone shell 100, accommodating cavity 101, microphone hole 102, inclined inner wall 103, positioning column 104, sound guide channel 110, turn 111, wind shield 112, gap 113, channel 115, first mounting slot 120, opening 123, second mounting slot 130, wind noise reducing layer 140, microphone 200, cover plate 300, positioning hole 310. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] In one embodiment of the present invention, referring to Figure 1 and Figure 2 , a structure for reducing wind noise of earphones is provided, comprising an earphone shell 100 and a microphone 200. The earphone shell 100 has a receiving cavity 101 therein.

[0032] Reference Figure 2 and Figure 3 The earphone shell 100 is provided with a sound guide channel 110, and the sound guide channel 110 is provided with at least one bend 111. The earphone shell 100 is provided with a first mounting groove 120 and a second mounting groove 130 at both ends of the sound guide channel 110, and the first mounting groove 120 and the second mounting groove 130 are evenly connected to the sound guide channel 110.

[0033] Reference Figure 2 and Figure 3 The first mounting groove 120 and the second mounting groove 130 are both adapted to be installed with a wind noise reducing layer 140 , and the microphone head 200 is installed beside the second mounting groove 130 , and the microphone head 200 is communicated with the second mounting groove 130 .

[0034] Reference Figure 2 and Figure 3 The outer wall of the earphone shell 100 is provided with a microphone hole 102, and the microphone hole 102 is connected to the first mounting groove 120. When walking, exercising or running, wind noise will flow in through the microphone hole 102.

[0035] Reference Figure 3 , Figure 4 and Figure 5 ,in, Figure 4 and Figure 5 The arrow in the figure indicates the direction of wind noise flow. When using the earphones, external sounds enter from the microphone hole 102, and the wind noise enters the first mounting slot 120. The wind noise reduction layer 140 in the first mounting slot 120 can absorb and reduce most of the wind noise. Then the wind noise enters the sound guide channel 110, and the corner 111 in the sound guide channel 110 can reduce part of the wind noise again. Then, the wind noise enters the second mounting slot 130, and the wind noise reduction layer 140 in the second mounting slot 130 can absorb and reduce the remaining wind noise again. Finally, the wind noise entering the microphone 200 has been greatly eliminated, and the wind noise is basically eliminated. The effect of reducing wind noise is good. Even when the wind blows to the microphone 200 of the earphone 10 when walking, exercising or running, it will not produce whirring noise, thereby improving the sound quality of listening to songs with the earphone 10.

[0036] In another embodiment of the present invention, referring to Figure 3 , Figure 4 and Figure 5 At least one windshield 112 is provided in the sound guide channel 110 of the earphone wind noise reduction structure, and a gap 113 is provided between the windshield 112 and the sound guide channel 100, and the gap 113 is used to provide sound flow. The windshield 112 plays a role of blocking the wind, and changes the flow direction of the wind noise by blocking, so that the wind noise changes direction and bypasses the windshield 112 from the gap 113, and the flow rate of the wind noise will be reduced, so as to slow down the wind noise flowing through the sound guide channel 110, thereby playing the effect of reducing the wind noise, and reducing the wind noise together with the corner 111, and the wind noise reduction effect is good.

[0037] Specifically, the wind shield block 112 is rectangular, and the rectangle has a better effect of slowing down the flow rate of wind noise than the circle or arc. The thickness of the wind shield block 112 is the same as the depth of the sound guide channel 110.

[0038] In another embodiment of the present invention, referring to Figure 5 The sound guide channel 110 of the earphone wind noise reduction structure is provided with a bend 111, and the bend 111 divides the sound guide channel 110 into two sections of channels 115 connected in sequence, and the two channels 115 are respectively connected to the first mounting groove 120 and the second mounting groove 130. At least one wind shield 112 is provided in each section of the channel 115. The wind shield 112 and the corner 111 can both play a role in slowing down the flow rate of wind noise, have a good wind noise reduction effect, and have a simple structure.

[0039] In another embodiment of the present invention, referring to Figure 3 and Figure 4 The sound guide channel 110 of the earphone wind noise reduction structure is provided with four bends 111, and the four bends 111 divide the sound guide channel 110 into five sections of channels 115 connected in sequence, and the head end channel and the tail end channel of the five sections of the channels 115 are respectively connected to the first installation groove 120 and the second installation groove 130. At least one wind shield 112 is provided in each section of the channel 115.

[0040] Reference Figure 3 and Figure 4 The four turns 111 can reduce the wind noise flowing through the sound guide channel 110 four times, and the wind shield 112 in the five-section channel 115 can reduce the wind noise flowing through the sound guide channel 110 at least five times, so that the wind noise after flowing through the sound guide channel 110 is greatly eliminated. After entering the microphone 200 position, the wind noise is basically completely eliminated, the effect of reducing wind noise is better, and the sound quality of listening to music with headphones is better.

[0041] Specifically, eight wind shielding blocks 112 are provided in the sound guiding channel 110 .

[0042] Further, refer to Figure 3 and Figure 4 The adjacent channels 115 are arranged parallel or perpendicular to each other, so that the sound guide channels 110 are easy to process.

[0043] In another embodiment of the present invention, referring to Figure 3 and Figure 4The two adjacent wind shields 112 in the sound guide channel 110 of the earphone wind noise reduction structure are respectively arranged on the opposite side walls of the sound guide channel 110, so that the multiple wind shields 112 are distributed in the sound guide channel 110 in a louver structure (staggered distribution). The wind noise flowing into the sound guide channel 110 passes through the wind shields 112 in sequence. Since the multiple wind shields 112 are distributed in a louver structure (staggered distribution), the wind noise needs to bypass the wind shields 112 in sequence, and each wind shield 112 and each turn 111 can change the flow direction of the wind noise once, so that the flow rate of the wind noise can be slowed down once each time it passes through a wind shield 112 or a turn 111, achieving the effect of gradually reducing the wind noise, achieving a significant reduction or elimination of the wind noise, and providing users with high-quality listening sound quality.

[0044] It is understandable that the more wind shields 112 and bends 111 are set, the better the effect of reducing wind noise is. Since the space of the earphone 10 is limited and the processing complexity is taken into consideration, the number of bends 111 is set to 3-6 and the number of wind shields 112 is set to 6-10, which can achieve a good wind noise reduction effect and the structure is not too complicated.

[0045] Therefore, the shape of the sound guide channel 110, and the number of wind shields 112 and bends 111 are determined according to actual production requirements and customer needs, and the present invention is not limited here.

[0046] In another embodiment of the present invention, referring to Figure 3 and Figure 4 The first mounting groove 120, the sound guide channel 110 and the second mounting groove 130 of the earphone wind noise reduction structure are dug on the inner wall of the earphone shell 100, so that openings 123 are formed on the upper sides of the first mounting groove 120, the sound guide channel 110 and the second mounting groove 130.

[0047] Reference Figure 3 and Figure 4 A cover plate 300 covers the opening 123, so that the first mounting groove 120, the sound guide channel 110 and the second mounting groove 130 form a sealed cavity, so that the wind noise or sound entering from the microphone hole 102 flows along the first mounting groove 120, the sound guide channel 110 and the second mounting groove 130 in sequence, and the wind noise or sound leaks and causes other noises.

[0048] In addition, the current practice is usually to process a sound guide channel 110 separately, and then install the sound guide channel 110 in the earphone shell 100, which increases the difficulty of assembly and processing, and is costly. However, the present invention directly digs the sound guide channel 110 on the inner wall of the earphone shell 100, simplifies the processing difficulty of the sound guide channel 110, reduces the difficulty of assembly, and greatly reduces the processing cost.

[0049] Further, refer to Figure 3 and Figure 4 The cover plate 300 is a circuit board, and the microphone 200 is mounted on the circuit board and electrically connected to the circuit board. The microphone 200 is in communication with the second mounting groove 130, and the opening 123 is covered by the circuit board, so that the first mounting groove 120, the sound guide channel 110 and the second mounting groove 130 form a sealed cavity, and there is no need to specially vacate installation space for the circuit board, so that the space in the earphone shell 100 is reasonably utilized, and the space utilization rate is high.

[0050] Among them, circuit boards are mature existing technologies.

[0051] In another embodiment of the present invention, referring to Figure 3 , Figure 4 and Figure 6 The first mounting groove 120, the sound guide channel 110 and the second mounting groove 130 of the earphone wind noise reduction structure are obliquely arranged on the inner wall of the earphone shell 100, so that the inner wall of the earphone shell 100 at the peripheral position of the opening 123 forms an inclined inner wall 103, and the circuit board is installed on the inclined inner wall 103. The inclined inner wall 103 is mainly used to save the internal space of the earphone shell 100, to make room for the microphone 200 installed on the circuit board, to avoid the protruding microphone 200 from hitting the inner wall of the earphone shell 100, to reasonably use the space inside the earphone shell 100, to achieve high space utilization and compact structure.

[0052] Preferably, the first mounting groove 120 and the second mounting groove 130 are rectangular, but are not limited to a rectangle.

[0053] In another embodiment of the present invention, referring to Figure 3 and Figure 4 The inner wall of the earphone shell 100 of the earphone wind noise reduction structure is provided with a plurality of positioning posts 104 around the sound guide channel 110 (i.e., on the inclined inner wall 103), and the circuit board is provided with a plurality of positioning holes 310, and each positioning post 104 is adapted to be plugged into a positioning hole 310. The positioning posts 104 cooperate with the positioning holes 310 to position and install the circuit board, which is convenient for installation.

[0054] In some embodiments, the circuit board can be fixedly mounted on the inclined inner wall 103 by snapping, which is convenient for installation.

[0055] In other embodiments, the circuit board can be fixedly mounted on the inclined inner wall 103 by gluing, and the installation is firm.

[0056] In another embodiment of the present invention, referring to Figure 3 and Figure 4 The wind noise reduction layer 140 of the earphone wind noise reduction structure is a sponge layer, a foam layer or a mesh layer. The sponge layer, the foam layer or the mesh layer can prevent dust from entering the sound guide channel 110 from the microphone hole 102, and the sponge layer, the foam layer or the mesh layer also has the function of absorbing and reducing noise, thereby achieving the effect of dust prevention and noise reduction.

[0057] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0058] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A structure for reducing wind noise of headphones, characterized in that: The earphone shell comprises an earphone shell and a microphone; a sound guide channel is provided in the earphone shell, and the sound guide channel is provided with at least one bend; a first mounting groove and a second mounting groove are respectively provided at both ends of the sound guide channel in the earphone shell, and the first mounting groove and the second mounting groove are evenly connected with the sound guide channel; a wind noise reduction layer is adapted to be installed in the first mounting groove and the second mounting groove, and the microphone is installed on the side of the second mounting groove; a microphone hole is provided on the outer wall of the earphone shell, and the microphone hole is connected with the first mounting groove; the first mounting groove, the sound guide channel and the second mounting groove are dug on the inner wall of the earphone shell, so that the upper sides of the first mounting groove, the sound guide channel and the second mounting groove are all formed with openings; a cover plate covers the opening, so that the first mounting groove, the sound guide channel and the second mounting groove form a sealed cavity; the cover plate is a circuit board, the microphone is installed on the circuit board and is electrically connected to the circuit board; the microphone is communicated with the second mounting groove; the wind noise reduction layer is a sponge layer, a foam layer or a mesh layer.

2. The structure for reducing wind noise of headphones according to claim 1, characterized in that: At least one wind shield is disposed in the sound guide channel, and a gap is provided between the wind shield and the sound guide channel.

3. The structure for reducing wind noise of headphones according to claim 2, characterized in that: The sound guide channel is provided with a bend, and the bend divides the sound guide channel into two sections of channels connected in sequence, and the two channels are respectively connected to the first installation groove and the second installation groove; at least one wind shield block is provided in each section of the channel.

4. The structure for reducing wind noise of headphones according to claim 2, characterized in that: The sound guide channel is provided with four turns, and the four turns divide the sound guide channel into five channel sections connected in sequence. The head end channel and the tail end channel of the five channels are respectively connected to the first mounting groove and the second mounting groove; at least one wind shield block is provided in each channel section.

5. The earphone wind noise reduction structure according to claim 3 or 4, characterized in that: Two adjacent wind shielding blocks in the sound guiding channel are respectively arranged on two opposite side walls of the sound guiding channel.

6. The structure for reducing wind noise of earphones according to claim 1, characterized in that: The first mounting groove, the sound guide channel and the second mounting groove are arranged obliquely on the inner wall of the earphone shell, so that the inner wall of the earphone shell at the peripheral position of the opening forms an inclined inner wall, and the circuit board is installed on the inclined inner wall.

7. The structure for reducing wind noise of earphones according to claim 1, characterized in that: The inner wall of the earphone shell is provided with a plurality of positioning posts around the sound guide channel, and the circuit board is penetrated with a plurality of positioning holes, and each of the positioning posts is adapted to be plugged into one of the positioning holes.

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