Earphone with microphone

Abstract

The utility model provides an earphone with microphone, include: first casing, the first casing is formed with main chamber in, the outer surface of first casing has recess, the bottom wall of recess has the microphone hole that communicates with main chamber, and the distance of microphone hole with nearest recess lateral wall is not less than 4mm, control circuit board, install in main chamber, and the control circuit board has the microphone adjacent with microphone hole, windproof cotton, the windproof cotton fills up recess, and the thickness of windproof cotton is not less than 1.2mm, protective cover, install in the notch of recess and limit windproof cotton in recess, and the protective cover has the vent hole that recess communicates with outside. The utility model can guarantee the sound collection quality of microphone at the same time, reduce wind noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to earphone field, more specifically, relate to a kind of earphone with microphone. BACKGROUND

[0002] Earphone is a kind of electroacoustic conversion equipment, it can convert the audio signal from computer, mobile phone, media player etc. Into audible sound wave. Since earphone can provide personalized auditory experience, let user be able to enjoy audio content alone without disturbing others, while isolating part of external noise, especially suitable for high-fidelity music appreciation, professional recording monitoring, game sound experience, call privacy, travel or noisy environment listening etc. Many occasions.

[0003] When using earphone (especially sports earphone), the interference noise generated by wind hitting earphone microphone or shell, this noise is particularly obvious in outdoor running, cycling, driving, skiing etc. Scene, can seriously affect the call quality and active noise reduction / transparency mode experience. UTILITARIAN CONTENT

[0004] The technical problem to be solved by the utility model is that the above-mentioned earphone affects the use experience due to wind noise when outdoor sports, a new earphone with microphone is provided.

[0005] The technical solution of the utility model to solve the above-mentioned technical problem is to provide an earphone with microphone, comprising:

[0006] The first shell is formed with a main cavity in the first shell, the outer surface of the first shell has a groove, the bottom wall of the groove has a microphone hole connected with the main cavity, and the distance between the microphone hole and the nearest groove side wall is not less than 4mm;

[0007] Control circuit board, installed in main cavity, and the control circuit board has a microphone adjacent to the microphone hole;

[0008] Windproof cotton, the windproof cotton fills the groove, and the thickness of the windproof cotton is not less than 1.2mm;

[0009] Protective cover, installed at the notch of the groove and limits the windproof cotton in the groove, and the protective cover has a ventilation hole connecting the groove with the outside.

[0010] As a further improvement of the utility model, the area of the bottom wall of the groove is more than 50 times the cross-sectional area of the microphone hole.

[0011] As a further improvement of the utility model, the inner side of the protective cover and the windproof cotton have a dust screen, and the mesh of the dust screen is 150-250 mesh.

[0012] As a further improvement of this utility model, the groove occupies more than 50% of the surface on the first housing where the groove is located.

[0013] As a further improvement of this utility model, the windproof cotton is made of polyester fiber cotton, and the air permeability of the polyester fiber cotton is 100-500 L / (m²). 2 ·s), and the ratio of the original size of the polyester fiber cotton in the groove depth direction to its size after being compressed in the groove is not less than 3:1.

[0014] As a further improvement of this utility model, the earphone with microphone includes an ear hook and a second housing equipped with a sound-generating device. The first housing and the second housing are respectively connected to the two ends of the ear hook. When the earphone with microphone is worn on the human body, the first housing is located on the back side of the outer ear, the second housing is located on the front side of the outer ear, and the surface where the groove is located faces away from the human body surface.

[0015] As a further improvement of this utility model, the cross-section of the groove is elliptical or capsule-shaped, and the pore is located at the center of the groove width direction. The ratio of the distance from the pore to the first end of the groove length direction to the distance to the last end of the groove length direction is 1:3. The first end of the groove length direction is close to the ear hook, and the last end of the groove length direction faces away from the ear hook; or,

[0016] The groove has a circular cross-section, and the pore is located at the center of the groove.

[0017] As a further improvement of this utility model, the first housing includes a groove surrounding the outer side wall of the groove, the outer periphery of the protective cover has a vertical protrusion, and when the protective cover is installed on the first housing, the vertical protrusion is embedded in the groove.

[0018] As a further improvement of this utility model, the bottom wall of the groove has strip-shaped buckle holes on both sides in the width direction, and the protective cover has vertical ear plates on both sides in the width direction. When the protective cover is installed on the first housing, the two vertical ear plates are respectively inserted into the two buckle holes of the bottom wall of the groove and clamp the bottom wall of the groove.

[0019] As a further improvement of this utility model, the first housing has a sound-generating device, and when the earphone with microphone is worn on the human body, the first housing is located on the front side of the outer ear, and the surface where the groove is located faces away from the human body surface.

[0020] This invention has the following advantages: by setting the microphone aperture on the bottom wall of the groove filled with windproof cotton, and ensuring that the distance between the microphone aperture and the nearest side wall of the groove is not less than 4mm, wind noise can be reduced while ensuring the quality of microphone sound acquisition. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an earphone with a microphone provided in an embodiment of this utility model.

[0022] Figure 2 This is a partially exploded structural diagram of the earphone with microphone provided in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the groove portion on the first housing of the earphone with microphone provided in this embodiment of the present invention.

[0024] Figure 4 This is a cross-sectional structural diagram of the microphone-equipped earphone provided in this embodiment of the present invention at the microphone hole position.

[0025] Figure 5 This is a schematic diagram of the structure of the protective cover in the earphone with microphone provided in this embodiment of the utility model.

[0026] Figure 6 This is a schematic diagram of wind noise at the microphone of different headphones with microphones. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figure 1 , Figure 2 The image shows a microphone-equipped headset provided in this embodiment of the invention. This headset can be connected to a mobile phone or similar device for music playback. It can also be used for sound recording and voice calls. The microphone-equipped headset of this embodiment includes a first housing 10, a control circuit board 15, a windproof cotton 12, and a protective cover 13. The control circuit board 15 is housed within the first housing 10, while the windproof cotton 12 and the protective cover 13 are mounted on the outer surface of the first housing 10. Those skilled in the art will understand that the microphone-equipped headset also includes a sound-generating device.

[0029] Combination Figure 3 , 4 As shown, the first housing 10 can be made of metal or rigid plastic material. A main chamber 113 is formed within the first housing 10, and a groove 114 is present on the outer surface of the first housing 10. The bottom wall of the groove 114 has a micro-hole 115, and the main chamber 113 is connected to the groove 114 through the micro-hole 115 (i.e., the micro-hole 115 penetrates the bottom wall of the groove 114). The micro-hole 115 is connected to the nearest sidewall of the groove (e.g., the nearest sidewall of the groove).Figure 3 The distance between the upper and lower sidewalls of the groove 114 is not less than 4 mm (and less than the dimension of the surface where the groove 114 is located). Specifically, the first housing 10 is formed by the interlocking of the main housing 112 and the cover plate 111, the main chamber 113 is formed by the main housing 112 and the cover plate 111, and the groove 114 is located on the surface of the main housing 112 facing away from the cover plate 111. Of course, in practical applications, the first housing 10 can also adopt other structures.

[0030] The control circuit board 15 is installed in the main chamber 113 of the first housing 10 (e.g., fixed by screws or clips). The control circuit board 15 has a microphone 151. When the control circuit board 15 is installed in the main chamber 113, the microphone 151 is adjacent to the diaphragm 115 penetrating the bottom wall of the groove 114. For example, the microphone 151 can be directly opposite the outlet of the diaphragm 115 in the main chamber 113, which is conducive to the sound acquisition of the microphone 151.

[0031] The windproof cotton 12 fills the groove 114 on the outer surface of the first housing 10, and the thickness of the windproof cotton 12 (after compression) is not less than 1.2 mm, that is, the depth of the groove 114 (e.g., ...). Figure 4 The dimension in the direction indicated by the middle arrow X shall not be less than 1.2 mm.

[0032] The protective cover 13 is installed at the opening of the groove 114 of the first housing 10, and the windproof cotton 12 inside the groove 114 is confined within the groove 114. The protective cover 13 has a ventilation hole 132 (specifically located on the cover plate 131 of the protective cover 13) that connects the groove 114 to the outside. Figure 5 As shown. Specifically, the protective cover 13 can be made of materials such as metal or hard plastic, which on the one hand can make the outer surface of the first shell 10 more uniform, and on the other hand can also exert pressure on the windproof cotton 12 in the groove 114 to keep it in a compressed state.

[0033] When using the aforementioned headset with a microphone for voice calls or sound recording, the user's voice enters the microphone hole 115 after passing through the ventilation hole 132 and the windproof cotton 12. The microphone 151 in the main chamber 113 can convert the sound into an electrical signal.

[0034] Compared to existing headphones that have holes directly on the outer shell surface, the presence of the windproof cotton 12 in the groove 114 prevents turbulence at the microphone opening 115, even during high-speed movement (such as during high-speed exercise, cycling, or skiing). This avoids the microphone misinterpreting low-to-mid-frequency wind noise as speech. Furthermore, compared to structures where the windproof cotton is directly inserted into or inside the microphone opening, the relatively large size of the groove 114 and the greater distance between the sidewall of the groove 114 and the entrance of the microphone opening 115 ensure that the windproof cotton 12 in the aforementioned headphones with a microphone does not reduce or interfere with the sound energy reaching the microphone 151 through the microphone opening 115, thus guaranteeing high-quality voice acquisition.

[0035] In one embodiment of this utility model, the area of ​​the bottom wall of the groove 114 is more than 50 times the cross-sectional area of ​​the pore 115. This ensures that the size of the windproof cotton 12 is large enough, thereby reducing wind noise while ensuring the sound collection volume.

[0036] To prevent dust from entering the groove 114 and the windproof cotton 12, in one embodiment of this utility model, a dustproof net 14 is provided between the inner side of the protective cover 13 and the windproof cotton 12, and the mesh size of the dustproof net 14 is 150-250 mesh. Preferably, the mesh size of the dustproof net 14 is 200 mesh, which effectively prevents dust without reducing volume and also achieves a certain degree of waterproofing.

[0037] Specifically, the groove 114 occupies more than 50% of the surface of the first housing 10 where the groove 114 is located, thereby ensuring that the size of the windproof cotton 12 is large enough.

[0038] In one embodiment of this utility model, the windproof cotton 12 is made of polyester fiber cotton, and the air permeability of the polyester fiber cotton is 100-500 L / (m²). 2 ·s), and the polyester fiber cotton is in the depth direction of the groove 114 (e.g. Figure 4 The ratio of the original size (in the direction indicated by the middle arrow X) to the size of the polyester retaining cotton after compression within the groove 114 is not less than 3:1. For example, when the depth of the groove 114 (i.e., the distance between the lower surface of the dustproof net 14 and the bottom wall of the groove 114) is 1.5mm, the thickness of the polyester fiber cotton (i.e., the windproof cotton 12) is not less than 4.5mm. This structure effectively reduces the wind speed entering the groove 114 and the pores 115.

[0039] In one embodiment of this utility model, the aforementioned microphone-equipped earphone includes an ear hook 30, a back hook 40, and a second housing 20, wherein the second housing 20 contains a sound-generating device (which can be a diaphragm sound-generating device or a bone conduction sound-generating device). The aforementioned first housing 10 is connected between the ear hook 30 and the back hook 40, and the second housing 20 is connected to the end of the ear hook 30 away from the first housing 10. When the microphone-equipped earphone is worn on the human body, the first housing 10 is located on the back side of the outer ear, and the second housing 20 is located on the front side of the outer ear, with the surface where the groove 114 is located (i.e., the surface where the protective cover 13 is located) facing away from the human body surface. In practical applications, the aforementioned microphone-equipped earphone may also not have a back hook, that is, it only includes an ear hook, a first housing, and a second housing, and the first housing and the second housing are respectively connected to the two ends of the ear hook.

[0040] Specifically, in the aforementioned microphone-equipped headphones, the cross-section of the groove 114 is elliptical or capsule-shaped, such as... Figure 3 As shown, the pore 115 is located in the width direction of the groove 114 (e.g., Figure 3 The center of the direction indicated by the middle arrow Y), from the length of the aperture 115 to the groove 114 (as shown by the middle arrow Y). Figure 3 The ratio of the distance from the beginning of the groove 114 (in the direction indicated by the middle arrow Z) to the distance from the beginning of the groove 114 to the end of the groove 114 in the length direction is 1:3, and the beginning of the groove 114 in the length direction is close to the ear hook 30, and the end of the groove 114 in the length direction is close to the rear hook 40. Alternatively, the cross-section of the groove 114 is circular, and the diaphragm 115 is located at the center of the groove 114.

[0041] like Figure 6 (a) shows the wind noise signal recorded by the microphone of the headphones when a user wearing ordinary headphones is riding at 23 km / h. Figure 6 (b) Wind noise signal recorded by the microphone behind the microphone at the same speed for a user wearing ordinary wind noise-canceling headphones (i.e. headphones with a small windproof cotton on the outside of the microphone); Figure 6 (c) Wind noise signal recorded by the microphone behind the microphone for a user wearing the aforementioned microphone-equipped headphones under the same conditions. The comparison shows that the aforementioned microphone-equipped headphones can significantly reduce wind noise during calls or audio recordings while the user is moving at high speeds, making them particularly suitable for sports headphones.

[0042] Combination Figures 3-5 As shown, in one embodiment of this utility model, the first housing 10 includes a groove 116 surrounding the outer sidewall of the recess 114. Correspondingly, the outer periphery of the cover plate 131 of the protective cover 13 has a vertical protrusion 133, and when the protective cover 13 is installed on the first housing 10, the vertical protrusion 133 is embedded in the groove 116. This structure ensures the stability of the protective cover 13 when installed on the first housing 10.

[0043] In one embodiment of this utility model, the bottom wall of the groove 114 has strip-shaped buckle holes 117 on both sides in the width direction, and the protective cover 13 has vertical ear plates 134 on both sides in the width direction. Those skilled in the art will understand that the two vertical ear plates 134 have a certain elasticity, and when the protective cover 13 is installed on the first housing 10, the two vertical ear plates 134 are respectively inserted into the two buckle holes 117 on the bottom wall of the groove 114 and clamp the bottom wall of the groove 114, thereby pressing the windproof cotton 12 and preventing it from falling off the first housing 10. Furthermore, the groove 116 may also contain adhesive to improve the bonding strength between the protective cover 13 and the first housing 10.

[0044] In one embodiment of the present invention, the first housing 10 has a sound-generating device, and when the earphone with microphone is worn on the human body, the first housing 10 is located on the front side of the outer ear, and the surface where the groove 114 is located faces away from the human body surface.

[0045] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An earphone with a microphone, characterized in that, include: A first housing has a main chamber formed inside it. The outer surface of the first housing has a groove. The bottom wall of the groove has a pore that communicates with the main chamber. The distance between the pore and the nearest side wall of the groove is not less than 4 mm. A control circuit board is installed in the main chamber, and the control circuit board has a microphone adjacent to the microphone hole; Windproof cotton, wherein the windproof cotton fills the groove and the thickness of the windproof cotton is not less than 1.2mm; A protective cover is installed at the opening of the groove and confines the windproof cotton in the groove, and the protective cover has ventilation holes that connect the groove to the outside.

2. The earphone with microphone according to claim 1, characterized in that, The area of ​​the bottom wall of the groove is more than 50 times the cross-sectional area of ​​the pore.

3. The earphone with microphone according to claim 1, characterized in that, The inner side of the protective cover has a dustproof net between it and the windproof cotton, and the mesh size of the dustproof net is 150-250 mesh.

4. The earphone with microphone according to claim 1, characterized in that, The groove occupies more than 50% of the surface of the first housing where the groove is located.

5. The earphone with a microphone according to any one of claims 1-4, characterized in that, The windproof cotton is made of polyester fiber, and the breathability of the polyester fiber is 100-500 L / (m²). 2 ·s), and the ratio of the original size of the polyester fiber cotton in the groove depth direction to its size after being compressed in the groove is not less than 3:

1.

6. The earphone with a microphone according to any one of claims 1-4, characterized in that, The microphone-equipped earphone includes an ear hook and a second housing equipped with a sound-generating device. The first housing and the second housing are respectively connected to the two ends of the ear hook. When the microphone-equipped earphone is worn on the human body, the first housing is located on the back side of the outer ear, the second housing is located on the front side of the outer ear, and the surface where the groove is located faces away from the human body surface.

7. The earphone with microphone according to claim 6, characterized in that, The groove has an elliptical or capsule-shaped cross-section, and the pore is located at the center of the groove's width direction. The ratio of the distance from the pore to the first end of the groove's length direction to the distance to the first end of the groove's length direction is 1:

3. The first end of the groove's length direction is close to the ear hook, and the second end faces away from the ear hook; or... The groove has a circular cross-section, and the pore is located at the center of the groove.

8. The earphone with microphone according to claim 6, characterized in that, The first housing includes a groove surrounding the outer sidewall of the recess, and the outer periphery of the protective cover has a vertical protrusion that is embedded in the groove when the protective cover is installed on the first housing.

9. The earphone with microphone according to claim 6, characterized in that, The groove bottom wall has strip-shaped buckle holes on both sides in the width direction, and the protective cover has vertical ear plates on both sides in the width direction. When the protective cover is installed on the first housing, the two vertical ear plates are respectively inserted into the two buckle holes of the groove bottom wall and clamp the bottom wall of the groove.

10. The earphone with a microphone according to any one of claims 1-4, characterized in that, The first housing contains a sound-generating device, and when the earphone with microphone is worn on the human body, the first housing is located on the front side of the outer ear, and the surface where the groove is located faces away from the human body surface.

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