Wireless earphone

Abstract

This invention provides a wireless earphone, comprising: a sound cavity portion including a first magnetic element located inside; and an ear hook portion including a front end connected to the sound cavity portion and a rear end opposite to the front end, the rear end having a second magnetic element. The ear hook portion is flexibly deformable to change the distance between the sound cavity portion and the rear end. When the distance is less than a predetermined value, the first magnetic element and the second magnetic element attract each other. The purpose of this invention is to provide a wireless earphone that enables at least multiple wearing methods and improves the comfort of wearing wireless earphones.

Description

Technical Field

[0001] Embodiments of the present invention relate to a wireless earphone. Background Technology

[0002] The following table analyzes various types of true wireless stereo (TWS) earphones currently available.

[0003]

[0004]

[0005] Generally, open-back TWS earphones can only be used as sports earphones and originally belonged to a niche market. However, as people pay more and more attention to fitness and hearing protection, open-back earphones have also taken on various product forms, and there are also earphones that are combined with glasses / jewelry.

[0006] A comparative analysis of open-back TWS earbuds. Figure 1 Figure 1000 shows the equivalent frequency response curves of bone conduction + air conduction products and air conduction products worn on a head and torso simulator (HATS), where the horizontal axis represents frequency in Hz and the vertical axis represents sound pressure level in dB. Curve 1001 represents the bone conduction + air conduction product and curve 1002 represents the air conduction product.

[0007] The bone conduction unit in a bone conduction product is a miniaturized vibrator using dynamic coil technology. Compared to air conduction speakers, the magnetic circuit and voice coil of bone conduction products are not significantly different; the main difference lies in the vibrating plate (spider) and diaphragm. Testing the performance of a bone conduction unit is similar to testing a vibration motor, typically using an accelerometer or a Klippel analyzer for evaluation. Bone conduction products provide relatively clear vocals, but are best suited for music and calls in relatively quiet environments. Furthermore, their application scenarios are somewhat limited, suitable only for activities like cycling and running. Moreover, bone conduction products have significant drawbacks: lack of low frequencies, insufficient loudness, mid-to-high frequencies rely solely on air conduction, slight sound leakage, noticeable vibration at volume above 80%, placement near the temples raising concerns about fatigue, and the unit's tendency to overheat at high volumes, resulting in higher power consumption. Compared to in-ear speakers, bone conduction products lag behind in terms of balance, dynamic impact, high-frequency performance, low-frequency performance, and volume.

[0008] In open-back TWS earbuds, air conduction accounts for the majority of the design. Take, for example, a product on the market that combines open-back air conduction earbuds with eyeglasses [using 16mm drivers; polyurethane (PU) surround + paper cone; 25mm distance between the air vent and the ear inlet; featuring a sound chamber and air vent design]. Figure 2 Figure 2000 shows the equivalent frequency response curves simulated and measured using the Knowles Electronics Manikin for Acoustic Research (KEMAR), where the horizontal axis represents frequency in Hz, the left vertical axis represents sound pressure level in dB, and the right vertical axis represents acoustic impedance in Ω. Curve 2001 represents data simulated using KEMAR, and curve 2002 represents data measured using KEMAR.

[0009] Figure 3 and Figure 5 The diagram shows another type of open-back headphone 300 worn in different positions on the ear. Figure 4 and Figure 6 They are shown respectively Figure 3 and Figure 5 A magnified view of the ear area, in Figure 3 and Figure 4 At the wearing position shown, the distance between the sound outlet of the earphone 300 and the ear canal opening is 9mm; Figure 5 and Figure 6 At the wearing position shown, the distance between the sound outlet of the earphone 300 and the ear canal opening is 16mm. Figure 7 Chart 700 shows Figure 3 and Figure 5 The illustrated embodiments and Figure 2 The curves 2002 and 3001 are compared, where the horizontal axis represents frequency in Hz and the vertical axis represents sound pressure level in dB. Figures 3 to 4 In the embodiment shown, curve 3002 represents Figures 5 to 6 The illustrated embodiment demonstrates that, although it's an open-back headphone, the relative position of the headphone outlet to the ear is crucial, influencing not only industrial design (ID) but also directly impacting acoustic performance and driver selection. The headphone outlet needs to be as close to the ear canal as possible; a smaller distance between the outlet and the ear canal opening significantly improves sensitivity. Figure 3 and Figure 5 The same headphones cost 300. Figure 5 The sound pressure level ratio at the wearing position shown Figure 3The wearing position shown is 15dB higher. Nevertheless, a reasonable wearing method with a suitable acoustic cavity design should still be considered to ensure comfort.

[0010] Market research shows that while open-back headphones utilize different technologies like bone conduction and air conduction, air conduction technology remains the most cost-effective. Current headphone styles include over-ear, in-ear, semi-in-ear, and ear-hook designs, all requiring specific ear shape and design. Currently, all open-back headphones are designed and positioned around the outer ear. Summary of the Invention

[0011] In view of the problems existing in the related technologies, the purpose of the present invention is to provide a wireless earphone that can at least enable rapid switching between multiple wearing methods and improve the comfort of wearing wireless earphones.

[0012] To achieve the above objectives, the present invention provides a wireless earphone, comprising: a sound cavity portion including a first magnetic element located inside; an ear hook portion including a front end connected to the sound cavity portion and a rear end opposite to the front end, the rear end having a second magnetic element, the ear hook portion being flexibly deformable to change the distance between the sound cavity portion and the rear end, and when the distance is less than a predetermined value, the first magnetic element and the second magnetic element attract each other.

[0013] In some embodiments, the ear hook is used to hang on the user's ear, and when the distance is less than a predetermined value, the acoustic cavity and the tail end abut against opposite sides of the ear.

[0014] In some embodiments, when the distance is less than a predetermined value, the acoustic cavity abuts against the concha of the ear and is offset from the opening of the ear canal.

[0015] In some embodiments, the acoustic cavity has a sound outlet, and when the acoustic cavity abuts against the concha of the ear, the distance between the sound outlet and the ear canal opening is 3 mm to 8 mm.

[0016] In some embodiments, when the vocal cavity portion abuts against the concha cavity, the tail end contacts the concha cavity.

[0017] In some embodiments, when the vocal cavity portion abuts against the concha cavity, the ear hook portion has an arc that conforms to the contour of the ear.

[0018] In some embodiments, the ear hook is used to hang on the user's ear, and when the acoustic cavity is in contact with the ear canal opening, the distance is greater than a predetermined value.

[0019] In some embodiments, the acoustic cavity has a sound outlet, and when the acoustic cavity is in contact with the ear canal opening, the sound outlet faces the ear canal opening.

[0020] In some embodiments, when the sound cavity is placed against the ear canal opening, the sound outlet is flush with the ear canal opening.

[0021] In some embodiments, the wireless earphones further include: an ear tip disposed on the acoustic cavity portion, wherein the ear tip is accommodated within the ear canal when the acoustic cavity portion is against the ear canal opening.

[0022] The present invention provides a wireless earphone, comprising: a sound cavity portion including a sound outlet; and an ear hook portion including a first end and a second end, and having a first type and a second type, wherein the first end is connected to the sound cavity portion, and the ear hook portion is flexibly deformable to change the distance between the sound cavity portion and the second end; when the distance is less than a predetermined value, the ear hook portion changes from the first type to the second type, wherein the first type causes the sound cavity portion to be supported on the user's ear canal opening, and the second type causes the sound cavity portion and the second end to abut against the sides of the user's ear respectively.

[0023] The beneficial technical effects of this invention are as follows:

[0024] The wireless earphones of this embodiment are flexible and deformable, therefore they can be used along... Figure 11 Applying force in the direction of the arrow becomes Figure 13 The shape shown can also be reversed, that is, the distance between the sound chamber and the tail end can be changed, so that the wireless earphones can be worn on the ears at the same time, as... Figure 11 As shown, it is worn in a semi-in-ear style and can also be used with the first and second magnetic components, such as... Figure 13 As shown, it clips onto the ear in an open-back design, and the ear hook is flexible and deformable, improving the comfort of wearing wireless headphones and allowing for quick switching between various wearing methods. Attached Figure Description

[0025] Figure 1 The graph shows the equivalent frequency response curves of bone conduction + air conduction products and air conduction products worn on HATS.

[0026] Figure 2 The chart shows the equivalent frequency response curves of the product, which combines open-back air conduction headphones with eyeglasses, simulated and measured using KEMAR.

[0027] Figure 3 and Figure 5 This diagram illustrates another type of open-back headphone worn in different positions on the ear. Figure 4 and Figure 6 They are shown respectively Figure 3 and Figure 5 A magnified view of the ear area.

[0028] Figure 7 The chart shows Figure 3 and Figure 5 The illustrated embodiments and Figure 2 The curves are compared.

[0029] Figure 8 The user's ears were shown. Figure 9 The inner surface of the ear is shown.

[0030] Figure 10 and Figure 12 The illustrations show the wireless earphones of this application worn on the ear in a first configuration and a second configuration, respectively. Figure 11 and Figure 13 They are shown respectively Figure 10 and Figure 12 A magnified view of the ear area.

[0031] Figures 14 to 17 The following are schematic diagrams of the structure of the first form of the wireless earphone according to an embodiment of this application from different angles. Figures 18 to 21 The diagram shows structural schematics of the second form of the wireless earphone according to an embodiment of this application from different angles.

[0032] Figure 22 The chart illustrates the acoustic simulation data of the wireless headphones according to an embodiment of this application. Detailed Implementation

[0033] To better understand the spirit of the embodiments of this application, the following description is based on some preferred embodiments of this application.

[0034] Embodiments of this application will be described in detail below. Throughout this specification, identical or similar components and components having identical or similar functions are indicated by similar reference numerals. The embodiments described herein with reference to the accompanying drawings are illustrative and diagrammatic in nature and are intended to provide a basic understanding of this application. The embodiments of this application should not be construed as limiting this application.

[0035] As used herein, the terms “approximately,” “generally,” “substantially,” and “about” are used to describe and indicate minor variations. When used in conjunction with an event or situation, these terms may refer to examples in which the event or situation occurred precisely or in examples in which the event or situation occurred very approximately.

[0036] In this specification, unless otherwise specified or limited, relative terms such as “central,” “longitudinal,” “lateral,” “front,” “rear,” “right,” “left,” “inner,” “outer,” “lower,” “higher,” “horizontal,” “vertical,” “above,” “below,” “above,” “below,” “top,” “bottom,” and their derivatives (e.g., “horizontally,” “downward,” “upward,” etc.) should be interpreted as referring to the directions described in the discussion or depicted in the accompanying drawings. These relative terms are used for descriptive convenience only and do not require that this application be constructed or operated in a particular orientation.

[0037] For ease of description, "first," "second," "third," etc., can be used in this article to distinguish different components of a figure or a series of figures. "First," "second," "third," etc., are not intended to describe the corresponding components.

[0038] Figure 8 The user's ear 200 is shown. Figure 9 The inner surface of ear 200 is shown, where P1 is located at the lower edge of the cymba conchae, P2 is located at the apex of the tragus, P3 is located at the notch between the tragus and the antitragus, P4 is located at the apex of the antitragus, P5 is located at the right edge of the antitragus, P6 is located at the lowest point of the conchae cavity, and P7 is the opening of the ear canal. 7a To P 7d The line connecting the two points shows the outline of the ear canal opening, where, in Figure 9 The angle shown actually indicates that the ear canal opening is covered by the tragus, therefore it should be an invisible structure, but Figure 9 The location of the ear canal opening is illustrated using a semi-transparent method. Figure 10 and Figure 12 The illustrations show the wireless earphone 300 of this application being worn on the ear 200 in different shapes. Figure 11 (At this angle, the acoustic cavity 10 is obscured by the ear hook 20, with only the right edge exposed.) Figure 13 (At this angle, the tail end 22 is obscured by the ears and is not shown.) The following are shown respectively. Figure 10 and Figure 12 A magnified view of the ear area. Figures 14 to 17 The following are schematic diagrams of the structure of the first form of the wireless earphone according to an embodiment of this application from different angles. Figures 18 to 21 The diagrams show structural schematics of a second form of wireless earphone according to an embodiment of this application from different angles. An embodiment of this application provides a wireless earphone 100, including: a sound cavity portion 10 and an ear hook portion 20. The sound cavity portion 10 includes a first magnetic element 71 located inside (see...). Figure 15 , Figure 17 , Figure 19 , Figure 21 (Since it is an internal, invisible structure, it is shown in dashed lines); the ear hook portion 20 includes a head end 21 connecting to the sound cavity portion 10 and a tail end 22 opposite to the head end 21, and the tail end 22 has a second magnetic element 72 (see Figure 15 and Figure 18 (Since it is an internal, invisible structure, it is shown in dashed lines). The ear hook portion 20 is flexible and deformable to change the distance between the sound cavity portion 10 and the tail end 22. When the distance is less than a predetermined value, the first magnetic element 71 and the second magnetic element 72 attract each other. The wireless earphone 100 of this embodiment is flexible and deformable, so it can be used along... Figure 11 Applying force in the direction of the arrow becomes Figure 13The shape shown can also be reversed, that is, the distance between the acoustic cavity 10 and the tail end 22 can be changed, so that the wireless earphone 100 can be worn on the ear 200 while... Figure 11 As shown, it is worn in a semi-in-ear style, and can also be used in conjunction with the first magnetic component 71 and the second magnetic component 72, such as... Figure 13 As shown, it clips onto the ear 200 in an open-back manner, and the ear hook 20 is flexible and deformable, which improves the wearing comfort of the wireless earphone 100.

[0039] An embodiment of the present invention provides a wireless earphone 100, comprising: a sound cavity portion 10 including a sound outlet 15; and an ear hook portion 20 including a first end (head end) 21 and a second end (tail end) 22, and having as... Figures 10-11 , Figures 14 to 17 The first type shown and Figures 12-13 , Figures 18 to 21 In the second configuration shown, the first end 21 is connected to the acoustic cavity 10, and the ear hook 20 is flexibly deformable to change the distance between the acoustic cavity 10 and the second end 22. When the distance is less than a predetermined value, the ear hook 20 changes from the first configuration to the second configuration. In the first configuration, the acoustic cavity 10 is supported on the user's ear canal opening, while in the second configuration, the acoustic cavity 10 and the second end 22 are respectively placed against the sides of the user's ear. That is to say, the present invention does not necessarily require the use of the first magnetic element 71 and the second magnetic element 72. The ear hook 20 can use a memory material, and the switching between the first and second configurations can be achieved through the flexible deformation of the ear hook 20. Changing the distance between the first end 21 and the second end 22 of the ear hook 20 changes the distance between the acoustic cavity 10 and the second end 22, thereby realizing different wearing methods of the wireless earphone 100.

[0040] exist Figure 10 and Figure 11 In the illustrated semi-in-ear wearing embodiment, the ear hook 20 is used to hang on the user's ear 200, and the acoustic cavity 10 is pressed against the ear canal opening of the ear 200 (i.e., the front cavity wall of the acoustic cavity 10 is pressed against it). Figure 9 (P7 feature point), the distance between the tail end 22 and the sound cavity 10 is greater than a predetermined value, at which point the first magnetic element 71 and the second magnetic element 72 do not function. The sound outlet 15 of the sound cavity 10 (see Figure 14 , Figure 16 , Figure 18 , Figure 20 Facing the ear canal opening, and the main sound outlet 15 can be flush with the ear canal opening.

[0041] exist Figure 12 and Figure 13 In the open-fit embodiment shown, the ear hook 20 is used to hang on the user's ear 200, and the distance between the tail end 22 and the acoustic cavity 10 (the distance between the ear 200 and the ear 200) is... Figure 9 The thickness at feature points P5 / P6 shown is less than a predetermined value. The first magnetic element 71 and the second magnetic element 72 are attracted together. The acoustic cavity 10 and the tail end 22 respectively abut against opposite sides of the ear 200, fixing the wireless earphone 100 to the ear 200. The acoustic cavity 10 abuts against the concha of the ear 200 (i.e., the posterior cavity wall of the acoustic cavity 10 is pressed tightly against it). Figure 9 (P5 / P6 feature points shown) and offset from the ear canal opening of the ear 200. The distance between the sound outlet 15 of the sound cavity 10 and the ear canal opening is 3mm to 8mm, for example 5mm. The tail end 22 of the ear hook 20 also contacts the concha cavity, and the ear hook 20 has an arc that conforms to the contour of the ear 200.

[0042] Figure 10 and Figure 11 When wearing a semi-in-ear ear as shown, the ear hook 20 does not need to be tightly pressed against the ear 200. The ear canal 10 only needs to be supported between the tragus and antitragus of the ear and rest against the ear canal opening to complete the fixation. The ear hook 20 is straight except for the bent part. Figure 12 and Figure 13 When worn in an open style, the ear hook 20 rests against the ear along with the sound cavity 10. Because the ear hook 20 is flexible and deformable, its shape can conform to the contour of the ear 200, making it more comfortable to wear.

[0043] In other embodiments, the wireless earphone 100 also includes an ear cover disposed on the acoustic cavity portion 10. Figure 11 Based on the semi-in-ear wearing design shown, the ear tips are accommodated within the ear canal at 200° of the ear, achieving an in-ear wearing method. For example, silicone ear tips serve to seal the ear canal and the wireless earphone at 100°.

[0044] The earphone unit and acoustic cavity 10 of the wireless earphone 100 were extracted and acoustically simulated on the KEMER artificial head, and the sound pressure level at the tympanic membrane was extracted for comparison. Figure 22 As shown in chart 1400, the horizontal axis represents frequency in Hz, the vertical axis represents sound pressure level in dB, and curve 1401 represents... Figure 12 and Figure 13 The example shown is an open-fitting design, with curve 1402 representing... Figure 10 and Figure 11 The example shown is a semi-in-ear wearing style. It can be seen that the sound pressure level of the semi-in-ear wearing style is 10dB higher than that of the open-ear wearing style.

[0045] This application describes the development of a novel TWS earphone with at least two wearing modes (at least open-ear and semi-in-ear). It employs an ear-hook design, utilizing a clever structural design (such as magnetic attraction) to allow for easy and free switching between wearing modes. Through appropriate driver selection and acoustic chamber design, it ensures excellent music quality in the semi-in-ear mode (music mode), while the open-ear mode (sports mode) allows for easy perception of ambient sounds, ensuring safety, while also providing a good music experience. Consumers only need to purchase one pair of earphones to simultaneously meet their daily exercise and music listening needs.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wireless earphone, characterized in that, include: The acoustic cavity includes a first magnetic element located inside it; as well as The ear hook includes a front end connected to the acoustic cavity and a rear end opposite to the front end. The rear end has a second magnetic element. The ear hook is flexibly deformable to change the distance between the acoustic cavity and the rear end. When the distance is less than a predetermined value, the first magnetic element and the second magnetic element attract each other.

2. The wireless earphone according to claim 1, characterized in that, The ear hook is used to hang on the user's ear. When the distance is less than the predetermined value, the acoustic cavity and the tail end respectively abut against the opposite sides of the ear.

3. The wireless earphone according to claim 2, characterized in that, When the distance is less than the predetermined value, the acoustic cavity abuts against the concha of the ear and is offset from the ear canal opening.

4. The wireless earphone according to claim 3, characterized in that, The acoustic cavity has a sound outlet. When the acoustic cavity is against the concha of the ear, the distance between the sound outlet and the ear canal opening is 3mm to 8mm.

5. The wireless earphone according to claim 3, characterized in that, When the vocal cavity portion abuts against the concha cavity, the tail end contacts the concha cavity.

6. The wireless earphone according to claim 3, characterized in that, When the acoustic cavity abuts against the concha cavity, the ear hook has an arc that conforms to the contour of the ear.

7. The wireless earphone according to claim 1, characterized in that, The ear hook is used to hang on the user's ear, and when the acoustic cavity is in contact with the ear canal opening, the distance is greater than the predetermined value.

8. The wireless earphone according to claim 7, characterized in that, The acoustic cavity has a sound outlet, and when the acoustic cavity is in contact with the ear canal opening, the sound outlet faces the ear canal opening.

9. The wireless earphone according to claim 8, characterized in that, When the acoustic cavity is placed against the ear canal opening, the sound outlet is flush with the ear canal opening.

10. The wireless earphone according to claim 7, characterized in that, Also includes: An ear cover is provided on the acoustic cavity portion, and when the acoustic cavity portion is against the ear canal opening of the ear, the ear cover is accommodated within the ear canal.

11. A wireless earphone, characterized in that, include: The acoustic cavity, including the sound outlet; and The ear hook includes a first end and a second end, and has a first form and a second form. The first end is connected to the acoustic cavity. The ear hook is flexibly deformable to change the distance between the acoustic cavity and the second end. When the distance is less than a predetermined value, the ear hook changes from the first form to the second form. The first form allows the acoustic cavity to be supported on the user's ear canal opening, while the second form allows the acoustic cavity and the second end to abut against the sides of the user's ear, respectively.

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