earphone

Abstract

The present invention discloses an earphone, comprising an earphone shell and a microphone arranged in the earphone shell, the earphone shell being formed with a penetrating sound pickup hole corresponding to the microphone, and a plurality of flow guides being arranged around the sound pickup hole on the outer wall surface of the earphone shell, each of the flow guides comprising a head end relatively far away from the sound pickup hole and a tail end relatively close to the sound pickup hole, the height of the flow guide protruding from the outer wall surface of the earphone shell gradually increasing from the head end and the tail end toward the center of the flow guide, the earphone of the present invention being provided with the flow guide to divert the airflow, so that the boundary layer obtains greater momentum and adheres to the outer wall surface of the earphone shell, the airflow flows along the outer wall surface of the earphone shell and basically does not enter the sound pickup hole to form irregular pulsating pressure, thereby avoiding the generation of aerodynamic noise and affecting the sound quality of the earphone.

Description

Technical Field

[0001] The present invention relates to the field of electroacoustic technology, in particular to a headset. Background Art

[0002] Sports headphones are headphones worn during exercise. What distinguishes them from ordinary headphones is that they can be worn stably on the ears and will not fall off the ears due to body movement. They are generally drip-proof, lightweight, and have good breathability. They are open-ear headphones.

[0003] In addition to stability, the most important thing to consider when using sports headphones is the sound quality. This is because during exercise, such as running, there will be a high wind speed. The high-speed airflow will form turbulence near the headphones. The turbulent airflow enters the microphone's pickup hole and forms irregular pulsating pressure. The pulsating pressure acts on the microphone and produces a large aerodynamic noise, affecting the sound quality of the headphones. Summary of the Invention

[0004] In view of this, an earphone is provided which can effectively reduce aerodynamic noise at high wind speeds.

[0005] The present invention provides an earphone, comprising an earphone shell and a microphone arranged in the earphone shell, the earphone shell being formed with a penetrating sound pickup hole corresponding to the microphone, and a plurality of flow guides being arranged around the sound pickup hole on the outer wall surface of the earphone shell, each of the flow guides comprising a head end relatively far away from the sound pickup hole and a tail end relatively close to the sound pickup hole, and the height of the flow guide protruding from the outer wall surface of the earphone shell gradually increasing from the head end and the tail end toward the center of the flow guide.

[0006] Furthermore, the maximum height position of the guide member protruding from the outer wall surface of the earphone shell is relatively close to the head end and away from the tail end.

[0007] Furthermore, the maximum height of the guide member protruding from the outer wall surface of the earphone shell is 1 to 2 times the aperture of the sound pickup hole.

[0008] Furthermore, the distance between the tail end and the sound pickup hole is 2 to 10 times the diameter of the sound pickup hole.

[0009] Furthermore, the guide member is a straight segment, a curved segment, or a combination of a straight segment and a curved segment, and the thickness of the guide member is 0.1 to 0.3 times the aperture of the sound pickup hole.

[0010] Furthermore, with a straight line passing through the center of the sound pickup hole and the tail end of the guide member as an axis, the guide member is tilted relative to the axis, and the tilt angle is 5° to 35°.

[0011] Furthermore, the flow guide comprises a straight segment and a curved segment connected in one piece, the head end is an end of the straight segment away from the curved segment, and the tail end is an end of the curved segment away from the straight segment.

[0012] Furthermore, the length of the straight line segment is 1 / 3 to 1 / 2 of the length of the flow guide.

[0013] Furthermore, the guide member includes a plurality of first guide members and a plurality of second guide members, and the plurality of first guide members and the plurality of second guide members are alternately arranged around the sound pickup hole. Each first guide member and an adjacent second guide member constitute a guide assembly, and the interval width between the curved section of the first guide member and the curved section of the second guide member of the guide assembly gradually decreases toward the sound pickup hole until they are connected to each other at the tail end.

[0014] Furthermore, the width of the interval between the straight section of the first flow guide member and the straight section of the second flow guide member of the flow guide assembly at the head end is 2 to 4 times the aperture of the sound pickup hole.

[0015] Compared with the prior art, the earphones of the present invention are provided with a guide member to divert the airflow, so that the boundary layer obtains greater momentum and adheres to the outer wall of the earphone shell. The airflow flows along the outer wall of the earphone shell and basically does not enter the sound pickup hole to form irregular pulsating pressure, thereby avoiding the generation of aerodynamic noise and affecting the sound quality of the earphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a structural diagram of an earphone according to an embodiment of the present invention.

[0017] Figure 2 for Figure 1 Exploded diagram.

[0018] Figure 3 for Figure 1 Another angled view of the headphones shown.

[0019] Figure 4 for Figure 3 Exploded diagram.

[0020] Figure 5 for Figure 1 A top view of the earphone shell of the earphone shown.

[0021] Figure 6 for Figure 5 An enlarged view of a diversion component.

[0022] Figure 7 for Figure 6 A side view of the first flow guide member of the flow guide assembly is shown.

[0023] Figure 8Schematic diagram of a second embodiment of the flow guide member of the earphone of the present invention.

[0024] Figure 9 Schematic diagram of a third embodiment of the flow guide member of the earphone of the present invention.

[0025] Figure 10 Schematic diagram of a fourth embodiment of the flow guide member of an earphone according to the present invention. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate one or more embodiments of the present invention to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that the present invention can be implemented in a variety of different forms and is not limited to the embodiments described below.

[0027] The same or similar numbers in the drawings of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] like Figure 1-4 As shown, the earphone of the present invention includes an earphone shell 10 and electronic components such as a speaker 12, microphones 14 and 16 arranged in the earphone shell 10.

[0029] In the illustrated embodiment, the earphones feature a dual-microphone design, including a primary microphone 14 and a secondary microphone 16. The primary microphone 14 is positioned near the bottom of the earphone housing 10, while the secondary microphone 16 is positioned near the top of the housing 10. A first sound pickup hole 18 is formed through the bottom of the housing 10, corresponding to the primary microphone 14, and a second sound pickup hole 19 is formed through the top of the housing 10, corresponding to the secondary microphone 16. When the earphones are in use, the first sound pickup hole 18, located on the bottom of the housing 10, is relatively closer to the human mouth and is used to pick up the sound of a person speaking. The second sound pickup hole 19, located on the top of the housing 10, is relatively farther away from the human mouth and is used to pick up noise and voice signals. The voice signals arrive at the primary microphone 14 and the secondary microphone 16 at different times, thereby suppressing noise.

[0030] The earphone housing 10 is provided with a plurality of first guide members 22 and a plurality of second guide members 24 protruding around the second sound pickup hole 19 of the secondary microphone 16. The plurality of first guide members 22 are evenly spaced around the second sound pickup hole 19, and the plurality of second guide members 24 are evenly spaced around the second sound pickup hole 19. The plurality of first guide members 22 and the plurality of second guide members 24 are alternately arranged around the second sound pickup hole 19. Each first guide member 22 and a second guide member 24 are combined to form a guide assembly 20. The plurality of guide assemblies 20 are evenly spaced around the second sound pickup hole 19. Figure 1-2 Only a single guide component 20 is schematically shown. The first guide member 22, the second guide member 24 and the earphone shell 10 can be integrally formed, such as integrally injection molded, or can be formed separately and then assembled together.

[0031] The first and second air guides 22, 24 protrude a certain height from the outer wall of the earphone housing 10. As the airflow passes through the first and second air guides 22, 24 toward the second sound pickup hole 19, they divert the airflow, allowing it to flow smoothly close to the outer wall of the earphone housing 10. This prevents turbulent airflow from entering the second sound pickup hole 19, creating irregular pulsating pressure that could then act on the microphones and generate aerodynamic noise, thereby ensuring the sound quality of the earphones of the present invention, particularly in high wind speed environments. It should be understood that the first and / or second air guides 22, 24 may also be positioned around the first sound pickup hole 18 of the primary microphone 14, or may be positioned around both the first and second sound pickup holes 18, 19.

[0032] Please also see Figures 5 to 7 In this embodiment, the first and second flow guides 22 and 24 have identical structures and are symmetrically arranged. The first flow guide 22 includes a first head end 220 and a first tail end 222, with the first head end 220 being distal from the second sound pickup hole 19 and the first tail end 222 being proximal to the second sound pickup hole 19. The second flow guide 24 includes a second head end 240 and a second tail end 242, with the second head end 240 being distal from the second sound pickup hole 19 and the second tail end 242 being proximal to the second sound pickup hole 19. In each flow guide assembly 20, the first head end 220 of the first flow guide 22 and the second head end 240 of the second flow guide 24 are spaced apart, and the first tail end 222 of the first flow guide 22 and the second tail end 242 of the second flow guide 24 are integrally connected. The first and second flow guides 22 and 24 are symmetrically arranged relative to an axis AA, which passes through the center of the second sound pickup hole 19 and the first and second tail ends 222 and 242.

[0033] The height of the first air guide 22 protruding from the outer wall of the earphone housing 10 gradually increases from its ends toward the center. That is, it has a minimum height at the first head end 220 and the first tail end 222 of the first air guide 22, and a maximum height at the center of the first air guide 22. Preferably, the height of the first air guide 22 rapidly increases from the first head end 220, then slowly decreases after reaching its highest point, so as to gradually gather the airflow entering the air guide assembly 20. The maximum height position of the first air guide 22 deviates from the exact center of the first air guide 22, being relatively close to the first head end 220 and away from the first tail end 222. The maximum height H of the first air guide 22 is 1 to 2 times the aperture R of the second sound pickup hole 19, which prevents the first air guide 22 from being too low, resulting in an insignificant diversion effect, and also prevents the first air guide 22 from being too high, forming a turbulent area on its rear side.

[0034] Similarly, the height of the second air guide 24 protruding from the outer wall of the earphone shell 10 gradually increases from its second head end 240 and second tail end 242 toward the center. Preferably, the height of the second air guide 24 increases rapidly from the second head end 240, and then slowly decreases after reaching the highest point, so as to gradually gather the airflow entering the air guide assembly 20. The maximum height position of the second air guide 24 deviates from the center of the second air guide 24, and is relatively close to the second head end 240 and away from the second tail end 242. The maximum height of the second air guide 24 is the same as the maximum height H of the first air guide 22, which is 1 to 2 times the aperture R of the second sound pickup hole 19. This avoids the second air guide 24 being too low and having an insignificant diversion effect, and also avoids the second air guide 24 being too high and forming a turbulent area on its rear side.

[0035] The first air guide 22 includes an integrally connected first straight segment 224 and a first curved segment 226. The first leading end 220 is the end of the first straight segment 224 distal to the first curved segment 226, and the first trailing end 222 is the end of the first curved segment 226 distal to the first straight segment 224. The second air guide 24 includes an integrally connected second straight segment 244 and a second curved segment 246. The second leading end 240 is the end of the second straight segment 244 distal to the second curved segment 246, and the second trailing end 242 is the end of the second curved segment 246 distal to the second straight segment 244. The first straight segment 224 and the second straight segment 244 are substantially parallel and spaced apart, with the spacing between them remaining constant or varying only slightly. The first curved segment 226 and the second curved segment 246 are disposed opposite each other, with the spacing between them gradually decreasing along the direction of airflow, i.e., toward the second sound pickup hole 19, until they intersect, thereby converging and guiding the airflow.

[0036] The air guide assembly 20 forms a semi-enclosed space 26 between the first air guide member 22 and the second air guide member 24. The width of the space 26 remains substantially constant at locations corresponding to the first straight segment 224 and the second straight segment 244, but decreases at locations corresponding to the first curved segment 226 and the second curved segment 246. The air guide assembly 20 as a whole tapers toward the second sound pickup hole 19. The gap between the first head end 220 and the second head end 240 forms the airflow inlet of the space 26. As air flows through the air guide assembly 20 toward the second sound pickup hole 19, the varying heights of the first and second air guide members 22 and 24 create a diversion effect. Furthermore, because the space 26 tapers and is closed at its rear end, airflow converges at the rear end of the air guide assembly 20 and is diverted along the first and second air guide members 22 and 24, continuing to flow beyond the air guide assembly 20.

[0037] After the diversion effect of the flow guide component 20, the vortices generated by the airflow are mixed with the boundary layer, causing the boundary layer to gain greater momentum and adhere to the outer wall of the earphone shell 10. In this way, the irregular turbulence formed by the separation of the airflow in front of the second sound pickup hole 19 is converted into a flow parallel to the outer wall of the earphone shell 10. The airflow flows along the outer wall of the earphone shell 10 and basically does not enter the second sound pickup hole 19, preventing turbulent airflow from entering the earphone shell 10 and forming irregular pulsating pressure, which in turn acts on the secondary microphone 16 to generate aerodynamic noise and affect the sound quality of the earphones. In addition, the airflow flows along the outer wall of the earphone shell 10, preventing the airflow from separating after the second sound pickup hole 19 to form irregular turbulence, and making the low-pressure turbulent area away from the second sound pickup hole 19 and the secondary microphone 16, reducing the resistance caused by the front-to-back pressure difference and reducing the vibration of the earphone shell 10, which significantly helps the aerodynamic performance of the earphones of the present invention.

[0038] Preferably, the first and second flow guides 22 and 24 are tilted relative to axis AA, with an inclination angle α of 5° to 35°, which effectively converges and diverts the airflow. The length L1 of the first straight segment 224 is less than the length L2 of the first curved segment 226 (i.e., the straight-line distance between the beginning and end of the first curved segment 226) and is 1 / 3 to 1 / 2 of the length L0 of the first flow guide 22 (i.e., the straight-line distance from the beginning to the end of the first flow guide 22). Similarly, the length of the second straight segment 244 is less than the length of the second curved segment 246 and is 1 / 3 to 1 / 2 of the length of the second flow guide 24. Thus, the first and second curved segments 226 and 246 are of sufficient length to fully converge and integrate the airflow for diversion. It should be understood that the first and second flow guides 22 and 24 can also be asymmetrically arranged relative to axis AA, in which case the first and second flow guides 22 and 24 can have different inclination angles relative to axis AA.

[0039] The first and second air guides 22 and 24 are thin plates with a thickness T of 0.1 to 0.3 times the diameter D of the second sound pickup hole 19. This not only facilitates the molding and processing of the air guide assembly 20, but also maximizes the spacing 26 between the first and second air guides 22 and 24, ensuring effective guidance of the airflow flowing directly into the second sound pickup hole 19. Preferably, the maximum spacing between the first and second air guides 22 and 24, specifically the spacing D2 between the first and second ends 220 and 240, is 2 to 4 times the diameter D of the second sound pickup hole 19. Preferably, the spacing D1 between the first and second ends 222 and 242 and the second sound pickup hole 19 is 2 to 10 times the diameter D of the second sound pickup hole 19. This prevents a spacing D1 that is too small, potentially allowing some turbulent airflow to enter the second sound pickup hole 19, or a spacing D1 that is too large, potentially rendering the airflow guidance effect of the air guide assembly 20 ineffective.

[0040] In the above embodiment, the earphone housing 10 is provided with a plurality of first and second air guides 22 and 24, which are alternately arranged around the second sound pickup hole 19. Each air guide 22 and 24 comprises an integrally connected straight segment and a curved segment. The first curved segment 226 of the first air guide 22 and the second curved segment 246 of the second air guide 24 are arranged opposite each other, with the spacing between them gradually decreasing along the direction of airflow, i.e., toward the second sound pickup hole 19, until they intersect. The two air guides 22 and 24 are symmetrically arranged and integrally connected at one end near the second sound pickup hole 19 to form an air guide assembly 20. Multiple air guide assemblies 20 are evenly spaced along the circumference, diverting the airflow and ensuring smooth flow along the surface of the earphone housing 10. It should be understood that the air guide structure can be implemented in various ways.

[0041] like Figure 8 In the second embodiment of the present invention, a plurality of first air guides 22a and second air guides 24a are disposed on the earphone housing 10 around the second sound pickup hole 19. The first and second air guides 22a, 24a are alternately arranged around the second sound pickup hole 19. Each first air guide 22a and an adjacent second air guide 24a form an air guide assembly 20a. The air guide assembly 20a is tapered toward the second sound pickup hole 19. The width of the gap between the first and second air guides 22a, 24a gradually decreases from the leading end to the trailing end, that is, along the direction of airflow entering the second sound pickup hole 19. Unlike the first embodiment, the first and second air guides 22a, 24a are spaced apart, with a small distance between the trailing ends.

[0042] Figure 9In the third embodiment of the present invention, a plurality of guide members 22b are provided on the earphone housing 10 around the second sound pickup hole 19. In this embodiment, each guide member 22b is a curved segment, and the height of each guide member 22b increases rapidly from the head end to the head end, and then slowly decreases after reaching the highest point. Figure 10 The fourth embodiment of the present invention is shown. Several air guides 22c are disposed on the earphone housing 10 around the second sound pickup port 19. Unlike this embodiment, each air guide 22c is a straight segment. The height of the air guides 22b and 22c increases rapidly from the head end and slowly decreases after reaching its highest point, creating a diversion effect on the airflow. It should be understood that in the first and second embodiments, the first air guides 22a and 22b and the second air guides 22a and 22b can also be straight or curved segments, and are not limited to the specific embodiments.

[0043] It should be noted that the present invention is not limited to the above-mentioned embodiments. Based on the creative spirit of the present invention, those skilled in the art can also make other changes. These changes made based on the creative spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. An earphone comprising an earphone shell and a microphone disposed in the earphone shell, wherein the earphone shell has a penetrating sound pickup hole formed therein corresponding to the microphone, characterized in that: A plurality of flow guides are provided on the outer wall of the earphone housing around the sound pickup hole, each of the flow guides including a head end relatively far from the sound pickup hole and a tail end relatively close to the sound pickup hole, the height of the flow guide protruding from the outer wall of the earphone housing gradually increasing from the head end and the tail end toward the center of the flow guide, and the height of the flow guide increases rapidly from the head end toward the center to the highest point and then slowly decreases toward the tail end; The guide member includes a plurality of first guide members and a plurality of second guide members, and the plurality of first guide members and the plurality of second guide members are alternately arranged around the sound pickup hole. Each first guide member and an adjacent second guide member constitute a guide assembly. The guide assembly as a whole is tapered toward the sound pickup hole, and the width of the interval between the first guide member and the second guide member gradually decreases from the head end to the tail end.

2. The earphone according to claim 1, wherein The maximum height position of the flow guide protruding from the outer wall surface of the earphone shell is relatively close to the head end and away from the tail end.

3. The earphone according to claim 2, wherein The maximum height of the guide member protruding from the outer wall surface of the earphone shell is 1 to 2 times the aperture of the sound pickup hole.

4. The earphone according to claim 1, wherein The distance between the tail end and the sound pickup hole is 2 to 10 times the diameter of the sound pickup hole.

5. The earphone according to claim 1, wherein The guide member is a straight line segment, a curved line segment, or a combination of a straight line segment and a curved line segment. The thickness of the guide member is 0.1 to 0.3 times the diameter of the sound pickup hole.

6. The earphone according to any one of claims 1 to 5, characterized in that: The straight line passing through the center of the sound pickup hole and the tail end of the guide member is used as an axis, and the guide member is tilted relative to the axis, with an inclination angle of 5° to 35°.

7. The earphone according to claim 6, wherein The flow guide comprises a straight segment and a curved segment connected in one piece, the head end is an end of the straight segment away from the curved segment, and the tail end is an end of the curved segment away from the straight segment.

8. The earphone according to claim 7, wherein The length of the straight line segment is 1 / 3 to 1 / 2 of the length of the flow guide.

9. The earphone according to claim 7, wherein The interval width between the curved section of the first guide member and the curved section of the second guide member of the guide assembly gradually decreases toward the sound pickup hole and is connected to each other at the tail end.

10. The earphone according to claim 9, wherein The width of the interval between the straight section of the first flow guide member and the straight section of the second flow guide member of the flow guide assembly at the head end is 2 to 4 times the aperture of the sound pickup hole.

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