Wireless earphone

Abstract

The utility model relates to earphone technical field, especially wireless earphone, include: casing, inside formation has accommodation space and with the acoustic cavity that communicates with accommodation space, the casing is opened with the acoustic cavity communicates with the sound hole of acoustic cavity, be equipped with in the casing's accommodation space and with the fixed connection of casing moving coil, be equipped with in the high frequency sound unit of acoustic cavity, the setting direction of high frequency sound unit with the setting direction of moving coil intersects and presents the setting angle. The utility model discloses moving coil and high frequency sound unit are combined, improve the high frequency performance of wireless earphone, further let high frequency sound unit and moving coil's setting direction intersect and present the setting angle, to this reaches the better resonance relation between high frequency sound unit and moving coil, and then obtains better high frequency tone quality and better overall performance.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and specifically to a wireless headphone. Background Technology

[0002] Most true wireless Bluetooth earbuds on the market today use dynamic coils as their main drivers, due to the combined advantages of dynamic coil technology in terms of cost, manufacturing process, and sound quality. However, while dynamic coils typically have strong low and mid-frequency performance, their high-frequency response often appears compressed, lacking sufficient resolution and extension. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wireless earphone that solves the problem of poor high-frequency performance caused by the use of dynamic drivers in existing wireless earphones.

[0004] The technical solution to achieve the above objectives is:

[0005] This utility model provides a wireless earphone, comprising:

[0006] The housing has an internal accommodating space and a sound outlet cavity communicating with the accommodating space, and the housing has a sound outlet hole communicating with the sound outlet cavity;

[0007] A moving coil is disposed within the accommodating space of the housing and fixedly connected to the housing;

[0008] A high-frequency sound-generating unit is disposed within the sound outlet cavity, and the orientation of the high-frequency sound-generating unit intersects with the orientation of the moving coil at a predetermined angle.

[0009] A further improvement of this invention's wireless earphones is that the set angle ranges from 50° to 70°.

[0010] A further improvement of this invention's wireless earphone is that the set angle is 60°.

[0011] A further improvement of this utility model of wireless earphones is that a sound outlet channel is formed inside the housing, connecting the sound outlet cavity and the sound outlet hole;

[0012] The diameter of the sound outlet hole is larger than the diameter of the sound outlet channel.

[0013] A further improvement of this utility model of wireless earphones is that the sound output channel includes a first channel portion and a second channel portion connected to the first channel portion;

[0014] The size of the end of the first channel portion that connects to the sound outlet cavity is larger than the size of the end of the first channel portion that connects to the second channel portion;

[0015] The dimensions of both ends of the second channel section are the same.

[0016] A further improvement of this invention's wireless earphone is that the length of the second channel portion is between 1.5mm and 2.5mm.

[0017] A further improvement of this invention is that the bottom wall of the sound outlet cavity is provided with a downwardly recessed groove.

[0018] The high-frequency sound-generating unit is located within the slot.

[0019] A further improvement of this invention's wireless earphone is that the bottom surface of the groove is an inclined surface.

[0020] A further improvement of this invention's wireless earphone is that the diameter of the sound outlet hole is between 1.5mm and 2.5mm.

[0021] A further improvement of this invention's wireless earphones is that the high-frequency sound-generating unit is a miniature mechanical acoustic component.

[0022] The beneficial effects of this wireless earphone are as follows:

[0023] This invention relates to wireless headphones that combine a dynamic driver with a high-frequency sound unit, improving the high-frequency performance of wireless headphones and solving the problems of compressed high-frequency response and insufficient resolution and extension in existing wireless headphones that only use dynamic drivers. The wireless headphones of this invention have lower distortion and better overall performance.

[0024] The wireless earphone of this invention has a high-frequency sound unit and a dynamic driver positioned at a set angle to achieve a better resonance relationship between the high-frequency sound unit and the dynamic driver, thereby obtaining better high-frequency sound quality and better overall performance.

[0025] The wireless earphone of this utility model has a sound channel formed between the sound cavity and the sound hole. By designing the length of the sound channel and the size of the sound hole, high-frequency directional distortion can be reduced, and the mixing effect of low, mid and high frequencies can be optimized to improve the overall sound quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the first embodiment of the wireless earphone of this utility model.

[0027] Figure 2 for Figure 1 The diagram shows the exploded disintegration structure of a wireless headset.

[0028] Figure 3This is a schematic diagram of the exploded disassembly structure of the housing in the first embodiment of the wireless earphone of this utility model.

[0029] Figure 4 This is a cross-sectional view of the housing in the first embodiment of the wireless earphone of this utility model.

[0030] Figure 5 This is a three-dimensional structural diagram of the first part of the housing in the first embodiment of the wireless earphone of this utility model.

[0031] Figure 6 This is an exploded structural diagram of the second embodiment of the wireless earphone of this utility model.

[0032] Figure 7 The graphs show the sound pressure level and frequency of the wireless earphone of this invention and Comparative Example 1.

[0033] Figure 8 The graph shows the audio distortion rate and frequency of the wireless earphone of this invention and Comparative Example 1.

[0034] Figure 9 The graphs show the sound pressure level and frequency of the wireless earphone of this invention and Comparative Example 2.

[0035] Figure 10 The graph shows the audio distortion rate and frequency of the wireless earphone of this invention and Comparative Example 2.

[0036] Figure 11 The graph shows the sound pressure level and frequency test results obtained by selecting the aperture of 5 sets of sound outlet holes for the wireless earphone of this utility model.

[0037] Figure 12 The graph shows the audio distortion rate and frequency test results obtained by selecting the aperture of 5 sets of sound outlet holes for the wireless earphone of this utility model.

[0038] Figure 13 The diagram shows the sound pressure level and frequency test results obtained by selecting the lengths of two sets of second channel sections 3 for acoustic testing of the wireless earphones of this utility model.

[0039] Figure 14 The graph shows the test results of audio distortion rate and frequency obtained by selecting the lengths of two sets of second channel sections 3 for acoustic testing of the wireless earphones of this utility model. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] See Figure 1This invention provides a wireless earphone that addresses the problem of poor high-frequency performance caused by the use of dynamic drivers in existing wireless earphones. The wireless earphone of this invention combines a dynamic driver and a high-frequency sound unit, placing them at an angle within the earphone cavity to achieve superior sound quality across the mid, high, and low frequencies. It also offers advantages such as noise reduction and energy saving. The structure of this wireless earphone is described below with reference to the accompanying drawings.

[0042] See Figure 1 This diagram shows a structural schematic of the first embodiment of the wireless earphone of this utility model. (See attached diagram.) Figure 2 , showed Figure 1 The diagram shows the exploded structure of a wireless headset. (See attached image.) Figure 3 This image shows an exploded exploded structural diagram of the housing in the first embodiment of the wireless earphone of this utility model. (See attached image.) Figure 4 This image shows a cross-sectional view of the housing in the first embodiment of the wireless earphone of this utility model. The following is in conjunction with... Figures 1 to 4 The present invention describes the combined support structure for foundation pits.

[0043] like Figures 1 to 4 As shown, the wireless earphone of this utility model includes a shell 1, a dynamic coil 21, and a high-frequency sound-emitting unit 22. The shell 1 has an accommodating space and a sound outlet cavity 115 connected to the accommodating space. A sound outlet hole 30 connected to the sound outlet cavity 115 is provided on the shell 1. The dynamic coil 21 is disposed in the accommodating space of the shell 1. The high-frequency sound-emitting unit 22 is disposed in the sound outlet cavity 115. The setting direction of the high-frequency sound-emitting unit 22 intersects the setting direction of the dynamic coil 21 and forms a set angle A.

[0044] A high-frequency sound-generating unit 22 is disposed near the dynamic coil 21 within the housing 1, between the dynamic coil 21 and the sound outlet 30. The high-frequency sound-generating unit 22 is designed to improve the high-frequency performance of the wireless headphones, reduce sound distortion, and enhance the overall performance of the wireless headphones. Please refer to [link / reference]. Figure 7 and Figure 8 The image shows the acoustic test results of the wireless earphone of this invention, which combines a dynamic driver 21 and a high-frequency sound unit 22, and the wireless earphone of Comparative Example 1, which only uses a dynamic driver 21. The acoustic tests were conducted using Soundcheck software with a GRAS711 microphone. Figure 7 The horizontal axis represents frequency, and the vertical axis represents sound pressure level, or sound intensity, measured in decibels. The blue line represents the test results of the wireless earphone of this invention, and the orange line represents the test results of Comparative Example 1. Figure 7 The blue line in the mid-to-high frequency range shows a much higher sound pressure level than the orange line, indicating that the wireless headphones combining a dynamic driver and a high-frequency sound unit have better high-frequency performance. Figure 8The horizontal axis represents frequency, and the vertical axis represents audio distortion rate (%). The blue line represents the test results of the wireless headphones of this invention, and the orange line represents the test results of Comparative Example 1. In the high-frequency range, the blue line is slightly higher than the orange line. Since kinetic energy output will inevitably have distortion, the distortion rate shown by the blue line is within a reasonable range.

[0045] In one specific embodiment of this utility model, the set angle A formed between the setting direction of the high-frequency sound generating unit 22 and the setting direction of the moving coil 21 is in the range of 50° to 70°.

[0046] Preferably, the set angle A formed between the setting direction of the high-frequency sound unit 22 and the setting direction of the dynamic coil 21 is 60°.

[0047] like Figure 9 and Figure 10 The figure shows the test results of the wireless earphone of this invention, which uses a 60° angle between the dynamic driver 21 and the high-frequency sound unit 22, and the wireless earphone of Comparative Example 2, which uses a near 0° angle between the dynamic driver 21 and the high-frequency sound unit 22. The acoustic test was conducted using Soundcheck software with a GRAS711 microphone. Figure 9 The horizontal axis represents frequency, and the vertical axis represents sound pressure level, or sound intensity, measured in decibels. The black line represents the test results of the wireless earphone of this invention, and the pink line represents the test results of Comparative Example 2. Figure 9 As can be seen, the dynamic driver and the high-frequency sound unit are set at a specific angle, which enables better output in the high-frequency range, such as... Figure 10 As shown, the horizontal axis represents frequency, and the vertical axis represents audio distortion rate; the distortion rates of the two are basically the same. The test results above demonstrate that this invention, by designing the angle between the high-frequency sound unit 22 and the dynamic coil 21, can improve the high-frequency sound quality of the wireless headphones, adjust the resonance relationship between the two, and achieve better overall performance, namely, power saving and noise reduction.

[0048] In one specific embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the housing 1 includes a matching first part 11 and a second part 12, which can be mated together or snapped together, for example, by the cooperation of a snap fastener and a groove. Alternatively, the first part 11 and the second part 12 can be glued together, that is, by applying adhesive to the mating area. In a preferred embodiment, the housing 1 can be made of plastic, metal, etc. The housing 1 can be a plastic housing formed by injection molding or a metal housing formed by sheet metal stamping / bending.

[0049] Furthermore, a sound cavity 115 is formed inside the first part 11, and a high-frequency sound-generating unit 22 is disposed inside the first part 11. The size and shape of the high-frequency sound-generating unit 22 can correspond to the size and shape of the first part 11. An accommodating space is formed inside the second part 12, and a moving coil 21 is disposed inside the second part 12. The size and shape of the moving coil 21 can correspond to the size and shape of the second part 12.

[0050] Furthermore, a support ring platform is provided in the second part 12 of the housing 1 corresponding to the moving ring 21. The moving ring 21 is disposed on the support ring platform and can be glued to the support ring platform with adhesive.

[0051] Preferably, the bearing surface of the support ring platform is horizontally arranged, and the moving ring 21 is placed on the bearing surface of the support ring platform, and the moving ring 21 is also arranged horizontally.

[0052] Furthermore, such as Figure 4 and Figure 5 As shown, the bottom wall surface 112 of the sound outlet cavity 115 of the first part 11 has a downwardly recessed groove 113, and the high-frequency sound generating unit 22 is disposed in the groove 113. Furthermore, the high-frequency sound generating unit 22 is glued to the groove 113 with adhesive.

[0053] Furthermore, the bottom surface 114 of the groove 113 is an inclined surface, and the angle between the inclined surface and the horizontal plane is consistent with the setting angle between the high-frequency sound generating unit 22 and the moving coil 21. The bottom surface 114 of the groove 113 is arranged parallel to the bottom wall surface 112 of the sound outlet cavity 115.

[0054] Furthermore, the high-frequency sound unit 22 is a micro-mechanical acoustic component (XMEMS) used to process and emit mid- and high-frequency sounds.

[0055] In one specific embodiment of this utility model, such as Figure 4 As shown, a sound outlet channel is also formed inside the housing 1, which connects the sound outlet cavity 115 and the sound outlet hole 30. The diameter of the sound outlet hole 30 is larger than the diameter of the sound outlet channel.

[0056] Preferably, the sound output channel is formed within the first part 11 of the housing 1.

[0057] Furthermore, the sound output channel includes a first channel portion 111 and a second channel portion 3 connected to the first channel portion 111; the size of the end of the first channel portion 111 connected to the sound output cavity 115 is larger than the size of the end of the first channel portion 111 connected to the second channel portion 3; the sizes of the two ends of the second channel portion 3 are the same. Preferably, the centers of the high-frequency sound generating unit 22, the first channel portion 111, the second channel portion 3, and the sound output hole 30 are located on the same straight line, and the sound passes through the high-frequency sound generating unit 22, the first channel portion 111, the second channel portion 3, and the sound output hole 30 in sequence, avoiding excessive sound reflection and thus improving sound quality.

[0058] Furthermore, the first channel portion 111 has a variable cross-section, and the second channel portion 3 is tubular. The second channel portion 3 has a first end 31 and a second end 32 opposite to each other. The first end 31 is connected to the end of the first channel portion 111, and the second end 32 is connected to the sound outlet 30.

[0059] In a preferred embodiment, the cross-sectional shape of the first channel portion 111 and the second channel portion 3 is preferably circular. The first channel portion 111 is funnel-shaped, which can concentrate the sound emitted by the dynamic coil 21 and the high-frequency sound-generating unit 22.

[0060] Preferably, the diameter of the sound outlet 30 is larger than the diameter of the second end 32.

[0061] Furthermore, the diameter of the sound outlet 30 is between 1.5mm and 2.5mm. The diameter of the sound outlet 30 needs to be designed in conjunction with the dimensions of the dynamic coil 21 and the high-frequency generating unit 22. If the diameter of the sound outlet 30 is too small, the sound will be excessively reflected, resulting in a muffled sound and the sound not being properly emitted; while if the diameter of the sound outlet 30 is too large, it will cause sound scattering, loss of high-frequency directivity, and a decrease in overall performance. Additionally, an excessively large diameter of the sound outlet 30 will also cause discomfort when worn by the ear. Preferably, the diameter of the sound outlet 30 is 2mm. Figure 11 and Figure 12 As shown, the experimental object is the wireless earphone of this utility model. The angle between the dynamic driver and the high-frequency sound unit of each wireless earphone is designed to be 60°. The length of the second channel part 3 of each wireless earphone is consistent, the difference lies in the diameter of the sound outlet 30, which is 0.8mm, 1mm, 1.2mm, 1.4mm and 2mm respectively. Acoustic testing was conducted using Soundcheck software with a GRAS711 microphone. Figure 11 In the diagram, the horizontal axis represents frequency, and the vertical axis represents sound pressure level. Figure 12 In the diagram, the horizontal axis represents frequency, and the vertical axis represents audio distortion rate. Figure 11 and Figure 12The purple lines correspond to wireless earphones with a 0.8mm sound hole diameter, the blue lines to those with a 1mm sound hole diameter, the red lines to those with a 1.2mm sound hole diameter, the green lines to those with a 1.4mm sound hole diameter, and the black lines to those with a 2mm sound hole diameter. Figure 11 and Figure 12 As can be seen from the data, the black line has the highest sound pressure output and the lowest distortion rate.

[0062] Furthermore, the length of the second channel section 3 is between 1.5mm and 2.5mm. The length design of the second channel section 3 is related to the dynamic driver 21 and the high-frequency generating unit 22. If the length of the second channel section 3 is too short, it cannot effectively guide sound to the ear, resulting in poor headphone performance; if the length of the second channel section 3 is too long, it will cause excessive sound reflection and attenuation, leading to a deterioration in sound quality. Additionally, an excessively long second channel section 3 may also make the headphones difficult to fit snugly in the ear and prone to falling out. Preferably, the length of the second channel section 3 is 2mm. Figure 13 and Figure 14 As shown, the experimental object is the wireless earphone of this utility model. The angle between the dynamic driver and the high-frequency sound unit of the wireless earphone is designed to be 60°, and the diameter of the sound outlet is 2mm. The difference lies in the length of the second channel section 3, which is 4mm and 2mm respectively. Acoustic testing was conducted using Soundcheck software with a GRAS711 microphone. Figure 13 In the diagram, the horizontal axis represents frequency, and the vertical axis represents sound pressure level. Figure 14 In the diagram, the horizontal axis represents frequency, and the vertical axis represents audio distortion rate. Figure 13 and Figure 14 The red line corresponds to a length of 4mm for the second channel section 3, and the blue line corresponds to a length of 2mm for the second channel section 3. Figure 13 and Figure 14 As can be seen from the data, the wireless earphones with blue lines have better sound pressure levels and lower distortion rates.

[0063] In this embodiment, the first part 11 is an integrally formed structure, which has an integrally formed sound cavity 115, a groove 113 and a sound channel. After the first part 11 and the second part 12 are assembled, the accommodating space, the sound cavity 115 and the sound channel form a sound channel. When the dynamic coil 21 and the high-frequency sound unit 22 emit sound, the sound is transmitted to the sound hole 30 through the sound channel for the user to listen to.

[0064] like Figure 4As shown, the sound outlet cavity 115 forms a mixing space between the dynamic coil 21 and the high-frequency sound unit 22. The sound emitted by the dynamic coil 21 and the high-frequency sound unit 22 can be fully mixed in the mixing space. The mixing space can also adjust the resonance relationship between the dynamic coil 21 and the high-frequency sound unit 22, improve the sound quality performance, and also achieve the effects of power saving and noise reduction.

[0065] In one specific embodiment of this utility model, the dimensions of the high-frequency sound-generating unit 22 are 4.8mm*3mm*0.75mm.

[0066] This invention relates to wireless earphones that combine a dynamic driver with a high-frequency driver unit (XMEMS), comprehensively improving the sound quality across low, mid, and high frequencies. The earphones employ an angled configuration design between the dynamic driver and the high-frequency driver unit to achieve optimal resonance between them, thereby enhancing high-frequency sound quality and overall performance, while also achieving noise reduction. Furthermore, the design of the length of the second channel and the diameter of the sound outlet reduces directional distortion and excessive reflection of high-frequency sounds, further improving sound quality.

[0067] like Figures 1 to 5 As shown, in the first embodiment, the wireless earphone further includes a first cover 51 and a second cover 52. The first cover 51 covers the outside of the first part 11 of the housing 1, and the second cover 52 covers the outside of the second part 12 of the housing 1. The first cover 51 and the second cover 52 are connected to each other, thereby enclosing the first part 11 and the second part 12 of the housing 1. The area on the first part 11 corresponding to the second channel portion 3 extends from one side of the first cover 51. The first cover 51 can be made of silicone or other soft materials to protect the housing 1. Further, the wireless earphone also includes an ear cap 6, which is fitted onto the area on the first part 11 corresponding to the second channel portion 3. The ear cap 6 can be made of silicone or other soft materials for easy wearing by the user. When the user wears the wireless earphone, the sound generated by the wireless earphone can be directly transmitted to the user's ears.

[0068] In the first embodiment, the wireless earphone also includes a battery 7 and a circuit board 8. The battery 7 is disposed inside the second housing 52, and the circuit board 8 can be disposed inside the first housing 51 and the second housing 52. The circuit board 8 is electrically connected to the battery 7, and the circuit board 8 is also electrically connected to the dynamic coil 21 and the high-frequency sound unit 22. The circuit board 8 can be a flexible circuit board, and the battery 7 provides power to the dynamic coil 21 and the high-frequency sound unit 22 through the circuit board 8.

[0069] In addition to the aforementioned forms, the wireless earphones of this utility model can also be in other forms. For example... Figure 6The diagram shows a second embodiment of the wireless earphone. This second embodiment differs from the first embodiment in that it includes a main circuit board 81' and a microphone 9'. The second part 12' of the housing 1' includes a first extension 121', and the second cover 52' ​​includes a second extension 521'. The battery 7' and microphone 9' can be mounted on the main circuit board 81'. The circuit board, dynamic driver, and high-frequency sound unit disposed in the housing 1' are electrically connected to the main circuit board 81'. The first extension 121' and the second extension 521' can be assembled together, and the shapes of the first extension 121', the second extension 521', and the main circuit board 81' can correspond to each other. In practical applications, the wireless earphone of this embodiment has a call function. When a user wears the wireless earphone, they can make calls through the microphone 9'. The wireless earphone provides good sound quality, thereby improving call quality. Figure 6 The structure and function of the first part 11′, the ear cap 6′ and the first cover 51′ are roughly the same as the structure and function of the components corresponding to the aforementioned specific embodiments, and will not be described again here.

[0070] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A wireless earphone, characterized in that, include: The housing has an internal accommodating space and a sound outlet cavity communicating with the accommodating space, and the housing has a sound outlet hole communicating with the sound outlet cavity; A moving coil is disposed within the accommodating space of the housing and fixedly connected to the housing; A high-frequency sound-generating unit is disposed within the sound outlet cavity, and the orientation of the high-frequency sound-generating unit intersects with the orientation of the moving coil at a predetermined angle.

2. The wireless earphone as described in claim 1, characterized in that, The set angle ranges from 50° to 70°.

3. The wireless earphone as described in claim 1, characterized in that, The set angle is 60°.

4. The wireless earphone as described in claim 1, characterized in that, The housing also contains a sound outlet channel that connects the sound outlet cavity and the sound outlet hole; The diameter of the sound outlet hole is larger than the diameter of the sound outlet channel.

5. The wireless earphone as described in claim 4, characterized in that, The sound output channel includes a first channel section and a second channel section connected to the first channel section; The size of the end of the first channel portion that connects to the sound outlet cavity is larger than the size of the end of the first channel portion that connects to the second channel portion; The dimensions of both ends of the second channel section are the same.

6. The wireless earphone as described in claim 5, characterized in that, The length of the second channel portion is between 1.5mm and 2.5mm.

7. The wireless earphone as described in claim 1, characterized in that, The bottom wall of the sound outlet cavity is provided with a downwardly recessed groove; The high-frequency sound-generating unit is located within the slot.

8. The wireless earphone as described in claim 7, characterized in that, The bottom surface of the groove is an inclined surface.

9. The wireless earphone as described in claim 1, characterized in that, The diameter of the sound outlet is between 1.5 mm and 2.5 mm.

10. The wireless earphone as described in claim 1, characterized in that, The high-frequency sound-generating unit is a miniature mechanical acoustic component.

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