Ear clip type earphone

Abstract

The embodiment of the application provides an ear clip type earphone, which comprises a first earphone part, a second earphone part, a connecting bridge and a light sensor. The first earphone part comprises a first earphone shell and a mainboard arranged in the first earphone shell. The first earphone shell is provided with an opening. The second earphone part is opposite to the first earphone part and is provided with a sound outlet. The connecting bridge is connected between the first earphone part and the second earphone part. The light sensor is arranged in the first earphone shell. The light sensor emits detection light through the opening. The optical axis of the detection light is offset from the second earphone shell. The whole ear clip type earphone only needs to be provided with the light sensor in the first earphone part. In this way, the second earphone part does not need to be attached with a circuit board for detection, and the connecting bridge does not need to be designed with wiring. The internal space occupation is less, and the size of the ear clip type earphone is reduced.

Description

Technical Field

[0001] This application relates to the field of consumer electronics products, specifically to a clip-on earphone. Background Technology

[0002] With technological advancements, electronic devices such as headphones are becoming increasingly common, especially wireless Bluetooth headphones. Currently, clip-on headphones are emerging on the market. These typically consist of a speaker and a battery. When worn, the speaker doesn't need to be inserted deep into the ear canal, resulting in less pressure on the ear canal compared to traditional in-ear headphones. They are also less likely to cause discomfort or pain during extended wear, making them popular with consumers. Clip-on headphones usually require in-ear detection. This detection function is crucial for ensuring the headphones accurately determine if they are correctly inserted into the ear canal, enabling intelligent functions such as automatic music playback / pause and answering / hanging up calls.

[0003] In related technologies, the in-ear detection method for clip-on earphones involves attaching in-ear detection FPCs to the inner walls of the shell on the ear side of the speaker and the battery, respectively. This detection method occupies a large amount of internal space and has complex wiring. Utility Model Content

[0004] The purpose of this application is to provide an ear clip-on headphone that at least partially solves the above-mentioned technical problems.

[0005] This application provides an ear clip-on earphone, including a first earphone part, a second earphone part, a connecting bridge, and a light sensor. The first earphone part includes a first earphone shell and a main board disposed within the first earphone shell. The first earphone shell has an opening. The second earphone part is opposite to the first earphone part and has a sound outlet. The connecting bridge connects the first earphone part and the second earphone part. The light sensor is disposed within the first earphone shell and electrically connected to the main board. The light sensor emits detection light through the opening, and the optical axis of the detection light is offset from that of the second earphone shell.

[0006] The clip-on earphone provided in this application embodiment uses a light sensor to emit detection light towards the second earpiece for in-ear detection. The optical axis of the detection light is offset from the second earpiece, so most of the detection light can avoid the second earpiece, preventing false detections caused by reflection. The entire clip-on earphone only requires a light sensor inside the first earpiece. This eliminates the need for a detection circuit board in the second earpiece and wiring design within the connecting bridge, resulting in less internal space, facilitating the placement of other components, and reducing the overall size of the clip-on earphone.

[0007] These or other aspects of this application will become more apparent in the following description of the embodiments. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of an ear clip-on earphone and earphone case proposed in an embodiment of this application.

[0010] Figure 2 This is a schematic diagram of the structure of an ear clip-on earphone proposed in an embodiment of this application.

[0011] Figure 3 This is a schematic diagram of the installation structure of an optical sensor in an ear clip-on earphone according to an embodiment of this application.

[0012] Figure 4 This is a cross-sectional structural diagram of the first earpiece part in an ear clip-on earphone according to an embodiment of this application.

[0013] Figure 5 This is a structural block diagram of a light sensor in an ear clip-on earphone according to an embodiment of this application.

[0014] Figure 6 This is a cross-sectional structural diagram of an optical sensor in an ear clip-on earphone according to an embodiment of this application, in its installed state.

[0015] Figure 7 This is a schematic diagram of the structure of a first shell in an ear clip-on headphone according to an embodiment of this application.

[0016] Figure 8 yes Figure 7 The diagram shows the structure of the first housing in the installed state.

[0017] Figure 9 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application.

[0018] Figure 10 This is a schematic diagram of another first housing structure in an ear clip-on earphone according to an embodiment of this application.

[0019] Figure 11 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application.

[0020] Figure 12 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application.

[0021] Figure 13 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application.

[0022] Figure 14 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application.

[0023] Figure 15 This is a schematic diagram of the structure of another first housing in an ear clip-on earphone according to an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The embodiments, implementation methods and their technical features in this application can be combined with each other without conflict. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Currently, in-ear detection for clip-on earphones is basically achieved by attaching in-ear detection FPCs to the inner walls of the shell on the ear side, specifically to the speaker head and the battery head. When both the speaker head and the battery head detect a signal, it can be determined whether the earphone is being worn. Attaching in-ear detection FPCs to both the speaker head and the battery head is to avoid accidental touches that might occur if a person only touches one end of the speaker head or the battery head. Only when both ends simultaneously detect a change in signal will it be determined that the earphone is being worn.

[0026] The aforementioned detection method requires large-area FPC bonding at both ends of the speaker tube and the battery, which occupies a significant amount of internal space. Furthermore, since the in-ear detection FPC at the speaker tube needs to be soldered to the battery's main board via a wiring method through the connecting bridge, a separate wiring is required to achieve this function, complicating the wiring within the connecting bridge and increasing its overall size. Another point is that the current trend in open-back clip-on headphones, prioritizing wearing comfort and a smaller charging case, brings the speaker tube and battery very close together. When users squeeze the speaker tube and battery, or place the earphones in the charging case, the speaker tube and battery may touch, potentially causing false detections.

[0027] Based on this, the inventors of this application propose an ear clip-on earphone to improve the aforementioned problems. The embodiments of this application are described in detail below with reference to the accompanying drawings.

[0028] See Figure 1This embodiment provides an ear clip-on earphone 30, which can be housed in an earphone case 20. The earphone case 20 includes a case body 21 and a case lid 22. The case lid 22 is disposed on the case body 21 and can selectively open or close the case body 21. For example, the case lid 22 can be connected to the case body 21 by a hinge or by a detachable snap-fit ​​to the case body 21. No limitation is made here.

[0029] Please continue reading. Figure 1 The ear-clip earphone 30 may include a first earphone 31 and a second earphone 32 for wearing in the user's left and right ears, respectively. The first earphone 31 and the second earphone 32 can be connected wirelessly, and they are structurally identical. In this embodiment, the first earphone 31 and the second earphone 32 have built-in wireless communication modules for communicating with mobile smart terminals such as mobile phones, tablets, and smartwatches. These wireless communication modules can be Bluetooth, infrared, ZigBee, etc. It is understood that in other embodiments, the ear-clip earphone 30 may have only one or more earphones; this is not limited here.

[0030] See Figure 2 and Figure 3 The ear-clip earphone 30 includes a first earphone part 40, a second earphone part 60, a connecting bridge 80, and a light sensor 50. The connecting bridge 80 connects the first earphone part 40 and the second earphone part 60. The first earphone part 40 is used to install components such as batteries, and the second earphone part 60 is used to output sound during use. The light sensor 50 is used to detect the wearing of the entire ear-clip earphone 30.

[0031] For details, please continue reading Figure 2 and Figure 3 The first earphone part 40 includes a first earphone shell 46 and a main board 90 disposed within the first earphone shell 46. The main board 90 may be equipped with or integrate various components such as a processor and a memory, which is not limited in this embodiment. In this embodiment, the main board 90 is fixedly disposed on the inner wall of the first earphone shell 46 and is generally configured to be opposite to the second earphone part 60.

[0032] The shape of the first earphone shell 46 is configured to fit snugly against the back of the user's ear, so that the user can have greater comfort when wearing the ear clip-on headphones 30.

[0033] Please refer to the following in this embodiment: Figure 2 and Figure 4The first earphone shell 46 includes a first shell 41 and a second shell 42. Both the first shell 41 and the second shell 42 are generally hemispherical or near-hemispherical in shape. The first shell 41 and the second shell 42 are disposed opposite to each other and connected, forming a cavity 47 between the first shell 41 and the second shell 42. The first shell 41 is located on the side of the second shell 42 facing the second earphone portion 60, and the second shell 42 is located on the side of the first shell 41 away from the second earphone portion 60. It is understood that the first shell 41 and the second shell 42 can be integrally formed, or they can be connected together by means of adhesive, snap-fit, etc. This embodiment does not limit this.

[0034] The outer surface of the first housing 41 fits against the user's ear when worn, therefore the outer surface of the first housing 41 can be configured to fit the user's ear. In this embodiment, the outer surface of the first housing 41 is configured as a curved surface.

[0035] In this embodiment, the ear-clip earphone 30 may further include a battery (not shown). The battery may be disposed within a cavity 47 inside the first earphone shell 46. The battery may be electrically connected to the motherboard 90. The battery may be a rechargeable battery, such as a lithium battery, but this embodiment does not limit its use. The battery may also be used to power other components of the ear-clip earphone 30, but this embodiment will not elaborate on this.

[0036] The first earphone shell 46 is provided with an opening 43, which is used for the light sensor 50 to emit detection light S.

[0037] The second earphone part 60 is opposite to the first earphone part 40. The second earphone part 60 is provided with a sound outlet (not shown). The second earphone part 60 includes a second earphone shell 61, and the sound outlet is opened in the second earphone shell 61 and passes through the second earphone shell 61. In this embodiment, a speaker can also be provided inside the second earphone shell 61. The speaker is used to emit sound through the sound outlet, and the speaker is electrically connected to the motherboard 90 through wiring.

[0038] Please refer to it again. Figure 2 A connecting bridge 80 connects the first earphone part 40 and the second earphone part 60. The connecting bridge 80 can be configured as a general U-shape or an arch bridge shape, which is not limited in this embodiment. In this embodiment, the connecting bridge 80 includes a first end 81 and a second end 82. The first end 81 is connected to the first earphone part 40, and the second end 82 is connected to the second earphone part 60. The connecting bridge 80 is hollow inside and connects the cavity 47 and the second cavity. Therefore, the components disposed in the second cavity can be connected to the main board 90 disposed in the cavity 47 through wiring harnesses or flexible circuit boards 56.

[0039] Wherein, the first end 81 refers to the part of the connecting bridge 80 near the first earphone part 40, and the second end 82 refers to the part of the connecting bridge 80 near the second earphone part 60. Specifically, it can be the part of the connecting bridge 80 where the distance between it and the second earphone part 60 is less than or equal to h, where h can be 1-5cm, and this embodiment does not limit it.

[0040] In this embodiment, the first earphone shell 46, the second earphone shell 61, and the connecting bridge 80 can be connected in an integral manner. Furthermore, to achieve a thinner and lighter overall earphone 30, the first earphone shell 46, the second earphone shell 61, and the connecting bridge 80 can be made of plastic. Of course, it is understood that in other embodiments, the first earphone shell 46, the second earphone shell 61, and the connecting bridge 80 can also be made of metal or other materials.

[0041] The light sensor 50 is disposed inside the first earphone shell 46. The light sensor 50 emits a detection light beam S through the opening 43. After passing through the opening 43, the detection light beam S is emitted towards the second earphone part 60. The light sensor 50 is electrically connected to the motherboard 90.

[0042] Specifically, in this embodiment, see [reference] Figure 5 The light sensor 50 includes a light emitter 51 and a light receiver 52. The light emitter 51 is used to emit detection light rays S, and the light receiver 52 is used to receive the reflected detection light rays S.

[0043] After the light emitter 51 generates and emits the detection light beam S, when the detection light beam S is reflected by an external object, the reflected detection light beam S can be received by the light receiver 52. At this time, it can be determined that there is an object blocking the opening 43. Based on the time difference between the emission and return of the reflected detection light beam S, the distance information between the object and the opening 43 can be calculated.

[0044] The ear-clip earphone 30 may also include a control unit (not shown), which may be integrated into the motherboard 90. The control unit is electrically connected to the light sensor 50. The light sensor 50 may send detected distance parameters to the control unit to determine whether the ear-clip earphone 30 is being worn. The distance parameters refer to the distance information between the external object and the light sensor 50 when the detection light S emitted by the light sensor 50 is reflected by the external object.

[0045] In this embodiment, the working principle of the optical sensor 50 for detecting the wearing status is as follows: The optical emitter 51 emits a detection light beam S. When the user wears the ear-clip headphones 30, the first earpiece 40 and the second earpiece 60 are clamped on the ear. The detection light beam S emitted by the optical emitter 51 shines on the ear after being emitted. The detection light beam S is reflected by the ear and then passes through the opening 43 to enter the optical receiver 52. After the optical receiver 52 detects the reflected detection light beam S, it can calculate the distance between the reflected position of the detection light beam S and the optical sensor 50 based on the emission and reception time of the reflected detection light beam S. When the distance matches the distance between the ear and the optical sensor 50 when the headphones are worn, the control unit can determine that the headphones are currently in a wearing state. When the user is not wearing the ear-clip headphones 30, there is no object blocking the detection light beam S after it is emitted, so most of the detection light beam S will not be reflected. The optical receiver 52 will not receive the reflected detection light beam S, and at this time, it can be determined that the headphones are currently in a non-wearing state.

[0046] Since the structure of the second earphone shell 61 is usually spherical, and the second end 82 of the connecting bridge 80 is approximately connected to the middle of the second earphone shell 61, the distance between a part of the second earphone shell 61 and the light sensor 50 is approximately the same as the distance between the ear and the light sensor 50 when worn. Therefore, if the light sensor 50 emits detection light S towards the second earphone part 60, in the non-ear-in state, the detection light S emitted by the light sensor 50 may be reflected by the second earphone part 60 and enter the opening 43 to be received by the light receiver 52, which may cause false detection by the light sensor 50.

[0047] In this embodiment, the optical axis of the detection light beam S is offset from that of the second earphone part 60, meaning that the optical axis of the detection light beam S will not illuminate the second earphone part 60. Therefore, most of the detection light beam S in the light spot formed by the detection light beam S will not illuminate the second earphone part 60, and thus will not be reflected by the second earphone part 60, causing false detection. Since the detection light beam S emitted by the light emitter 51 is a continuous light spot, even if a small portion of the detection light beam S illuminates the second earphone part 60, it will only illuminate the edge portion of the second earphone part 60. Since the second earphone part 60 has a spherical structure with an arc-shaped edge, the detection light beam S that illuminates the edge portion of the second earphone part 60 will not be reflected along the original optical path when reflected by the second earphone part 60, but will be deflected in other directions. Therefore, this portion of the reflected detection light beam S will not enter the light receiver 52, and will not cause false detection.

[0048] In some embodiments, the light sensor 50 can be configured such that the area of ​​the light spot formed by the detection light ray S illuminating the second earphone part 60 is less than or equal to 20% of the total area of ​​the light spot, for example, it can be 10%, 5%, or 0%. In this embodiment, a small portion of the detection light ray S can illuminate the edge portion of the second earphone part 60, but when this portion of the detection light ray S is reflected by the second earphone part 60, it will not be reflected along the original optical path. This portion of the reflected detection light ray S will not enter the light receiver 52, and will not cause false detection.

[0049] In a more specific embodiment, the light spot formed by the detection light S can be completely offset from the second earphone part 60, that is, the light spot formed by the detection light S will not illuminate the second earphone part 60 at all. This embodiment can completely avoid the situation where the detection light S is reflected by the second earphone part 60 and causes false detection.

[0050] To improve the detection accuracy of the optical sensor 50, the detection light S emitted by the light emitter 51 needs to illuminate as much of the user's ear as possible when the device is worn. This results in a larger luminous flux of the detection light S reflected by the ear, and a larger luminous flux of the reflected detection light S entering the light receiver 52, thus improving detection accuracy. Therefore, the detection light S, after passing through the opening 43, should be positioned as close as possible to the central region of the first earphone portion 40. As a more specific implementation, at least a portion of the light spot formed by the detection light S illuminates the connecting bridge 80, specifically, the second end 82 of the connecting bridge 80.

[0051] The advantage of this implementation is that the connection point between the second end 82 of the connecting bridge 80 and the second earphone part 60 is approximately located in the middle of the second earphone part 60. In the non-wearing state, when at least a portion of the light spot formed by the detection light beam S illuminates the connecting bridge 80, the light spot formed by the detection light beam S propagates between the first earphone part 40 and the second earphone part 60, and is approximately located in the middle region between the first earphone part 40 and the second earphone part 60. Therefore, in the wearing state, the detection light beam S can completely or mostly illuminate the user's ear after emission, thereby improving detection accuracy. In particular, the light spot formed by the detection light beam S can also completely illuminate the connecting bridge 80, ensuring that the detection light beam S can completely illuminate the user's ear after emission, thereby improving detection accuracy.

[0052] Specifically, in this embodiment, see [reference] Figure 6An opening 43 is formed in the first housing 41, and a light sensor 50 is disposed inside the cavity 47 and located below the first housing 41. In this embodiment, the light sensor 50 is directly disposed below the opening 43, that is, the light sensor 50 directly emits the detection light S through the opening 43 and receives the reflected detection light S. In some other embodiments, the light sensor 50 may also be disposed in other positions within the cavity 47. By providing a light guiding component within the cavity 47, the detection light S emitted by the light emitter 51 can be guided by the light guiding component to exit through the opening 43. The reflected detection light S can also be guided by the light guiding component to the light receiver 52 after entering the opening 43. The light guiding component includes, but is not limited to, a reflector, a condenser, an optical waveguide, etc., and this embodiment does not limit this.

[0053] In this embodiment, please continue to refer to Figure 6 The first earphone part 40 may also include a lens bracket 53, a lens 54, and a flexible circuit board 56. The light emitter 51 is electrically connected to the flexible circuit board 56 and is used to emit detection light S. The light receiver 52 is electrically connected to the flexible circuit board 56 and is used to receive the reflected detection light S. The flexible circuit board 56 is electrically connected to the main board 90. The lens bracket 53 is installed in the cavity 47 and fixed to the first housing 41 of the first earphone shell 46. The lens 54 is installed in the lens bracket 53 and embedded in the opening 43. The lens 54 is located in the optical path of the detection light S.

[0054] After the light emitter 51 is energized to generate the detection light beam S, the detection light beam S passes through the lens 54. The lens 54 can homogenize the detection light beam S, making it more uniform. The detection light beam S passing through the lens 54 is emitted outward after passing through the opening 43. It can be understood that there can be one or more lenses 54, and the lens 54 can be a concave lens, a convex lens, a compound eye, etc. This embodiment does not limit this.

[0055] To ensure proper fixation of the light sensor 50 and prevent displacement or misalignment during user operation, in this embodiment, the flexible circuit board 56 includes a first plate 59, a second plate 58, and a third plate 57 connected sequentially. The light sensor 50 is disposed on the first plate 59, the second plate 58 has bent traces extending to the main board 90, and the third plate 57 is electrically connected to the main board 90. The first earphone portion 40 may also include a support member 55, which can be made of a rigid material, such as steel or other metals, or high-strength plastic. The support member 55 is connected to the inner wall of the first earphone shell 46. The surface of the first plate 59 facing away from the sensor is disposed on the support member 55 and can be fixed by means of adhesive bonding. The light sensor 50 is disposed on the surface of the first plate 59 away from the support member 55. This arrangement ensures that the first plate 59, where the sensor is disposed, remains stable within the cavity 47, preventing changes in the sensor's position and guaranteeing the stability of the light sensor 50 during operation.

[0056] It is understandable that in some other embodiments, the sensor can also be directly fixedly connected to the inner wall of the first earphone shell 46 to achieve stable fixation of the light sensor 50.

[0057] In this embodiment, to reduce the space occupied by the entire optical sensor 50 within the cavity 47, a mounting groove 45 can be provided on the inner wall of the first housing 41 of the first earphone housing 46. An opening 43 is formed within the mounting groove 45 and penetrates the first earphone housing 46. The lens bracket 53 can be embedded in the mounting groove 45. It is understood that the lens bracket 53 can be fully embedded in the mounting groove 45 or partially embedded. This arrangement results in less internal space occupied by the entire lens bracket 53, and a shorter distance between the optical sensor 50 and the second end 82. During detection, the detection light beam S travels a shorter distance, resulting in less loss during propagation and improved detection accuracy after reflection.

[0058] To further secure the lens bracket 53 and prevent external dust, impurities, and moisture from entering the cavity 47 through the through hole 43, sealant is filled between the lens bracket 53 and the first earphone shell 46. The sealant seals the gap and also forms an adhesive effect between the lens bracket 53 and the first earphone shell 46, thus fixing the lens bracket 53 and the first earphone shell 46 relatively.

[0059] The lens 54 can be embedded in the opening 43, and the surface of the lens 54 away from the sensor can also be configured to be flush with the outer surface of the first earphone shell 46, so that the overall appearance of the first earphone part 40 is more consistent.

[0060] The shape and structure of the lens 54 can match the shape of the opening 43, for example, in this embodiment, such as Figure 8 As shown, the opening 43 is set to be circular, and the cross-section of the lens 54 can also be circular.

[0061] The location of the opening 43 determines the illumination position of the detection light S after it is emitted. Therefore, to ensure that the area of ​​the light spot formed by the detection light S illuminating the user's ear is larger when the ear is worn, the location of the opening 43 can be selected. For a more specific implementation method, please refer again. Figure 8 The surface of the first housing 41 facing the second earphone part 60 has a geometric center O, which can refer to the center of symmetry of the first housing 41. The opening 43 can be formed on the side of the geometric center O near the connecting bridge 80. The advantage of this arrangement is that the detection light S emitted from the light sensor 50 can better avoid the second earphone part 60 during propagation, avoiding false detections. At the same time, when worn, the area of ​​the geometric center O near the connecting bridge 80 can remain in close contact with the user's auricle, thus ensuring that the detection light S can directly illuminate the auricle, and the travel distance of the detection light S is shorter, resulting in more accurate detection of the wearing status.

[0062] Please continue reading. Figure 8 The first housing 41 has a length direction X and a width direction Y, which are approximately perpendicular to each other.

[0063] To further improve the detection accuracy of the optical sensor 50, the distance between the opening 43 and the geometric center O along the width direction Y can be less than or equal to a / 2, and the distance between the opening 43 and the geometric center O along the width direction Y can be less than or equal to b / 3. That is, the position of the opening 43 can be approximately located at... Figure 8 The area within the dashed lines shown is symmetrically distributed. Here, 'a' represents the width of the first housing 41, and 'b' represents the length of the first housing 41. The opening 43 within this area ensures that, when worn, the detection light S emitted from the opening 43 directly illuminates the user's ear, ensuring detection accuracy.

[0064] In this embodiment, the line n connecting the center of the opening 43 and the geometric center O is perpendicular to the length direction X of the first housing 41, that is, the line n connecting the center of the opening 43 and the geometric center O is parallel to the width direction Y of the first housing 41. This arrangement positions the opening 43 precisely on the center line of the first housing 41. On the one hand, this improves the overall appearance consistency of the first earphone part 40; on the other hand, it ensures that when worn, the detection light S emitted from the opening 43 can directly illuminate the user's ear, ensuring accurate detection.

[0065] The aperture size of the opening 43 determines the size of the light spot formed by the detection light beam S emitted from the light emitter 51. When the aperture size of the opening 43 is too small, the luminous flux of the detection light beam S is small, which may affect the accuracy of the detection results. If the aperture size of the opening 43 is too large, it is detrimental to the appearance consistency of the first earpiece 40. In addition, the luminous flux of the detection light beam S emitted by the light emitter 51 is large, which increases power consumption and the cost of the light emitter 51. Therefore, as an implementation method, the aperture size d of the opening 43 can satisfy 1.5mm ≤ d ≤ 5mm. Within this range, the accuracy of the detection results, energy consumption, and cost can be well balanced.

[0066] It should also be noted that when the opening 43 is a circular hole, the aperture diameter d can refer to the diameter of the opening 43; when the opening 43 is a hole of other shapes, the aperture diameter d can refer to the maximum inner diameter of the opening 43. Furthermore, when the light emitter 51 emits the detection light beam S, the spot area of ​​the detection light beam S can be less than or equal to the area of ​​the opening 43.

[0067] When the detection light beam S exits from the opening 43, it can be emitted at an angle to better avoid the second earpiece 60. Please refer again to this embodiment. Figure 6 The optical axis of the detection ray S is inclined relative to the external tangent m of the geometric center O, and the angle between the optical axis of the detection ray S and the external tangent m of the geometric center O can be 90°-150°. In this embodiment, since the opening 43 is located on the side of the geometric center O near the connecting bridge 80, and the detection ray S is emitted at an angle, the detection ray S will emit in a direction away from the second earphone part 60 after emission. Therefore, the area of ​​the light spot formed by the detection ray S that illuminates the second earphone part 60 can be smaller or completely absent, avoiding interference from the second earphone part 60 with the detection results.

[0068] The detection light S emitted by the light emitter 51 can be, for example, infrared light or other forms of light, such as laser light. In some embodiments, to improve the anti-interference capability of the detection process, the detection light S emitted by the light emitter 51 can also be encoded. Then, when the reflected detection light S is received, decoding is performed to determine whether the received light is formed by the reflection of the emitted detection light S, thus avoiding interference from other external light sources (such as infrared light emitted by other external devices).

[0069] In another embodiment, such as Figure 9 As shown, the opening 43 can be set to an ellipse, and the cross-section of the lens 54 can also be an ellipse that matches the opening 43.

[0070] In another embodiment, such as Figure 10As shown, the opening 43 is set as an elongated circle, and the cross-section of the lens 54 can also be an elongated circle that matches the opening 43.

[0071] In another embodiment, such as Figure 11 As shown, the opening 43 can be set as a rectangle. In this case, the cross-section of the lens 54 can also be a rectangle that matches the opening 43. In some embodiments, the corners of the opening 43 can also be rounded to make the appearance smoother.

[0072] In another embodiment, such as Figure 12 As shown, the opening 43 can be set as a square, and the cross-section of the lens 54 can also be a square that matches the opening 43. In some embodiments, the corners of the opening 43 can also be rounded to make the appearance smoother.

[0073] In another embodiment, the opening 43 can be set as a polygon, for example, a regular polygon, in which case the cross-section of the lens 54 can also be a polygon matching the opening 43. Figure 13 The diagram illustrates a structure where the opening 43 is a polygon, specifically a regular hexagon. It is understood that in other embodiments, the opening 43 may also be a regular pentagon, a regular dodecagon, etc., and this embodiment is not limited thereto.

[0074] In another embodiment, the opening 43 can be set as a trapezoid, such as an isosceles trapezoid, a right trapezoid, etc., and the cross-section of the lens 54 can also be a trapezoid that matches the opening 43. Figure 14 The diagram shows a structure in which the opening 43 is an isosceles trapezoid, wherein the lower base of the opening 43 is close to the geometric center O. Figure 15 Another structure is shown where the opening 43 is an isosceles trapezoid, wherein the upper base of the opening 43 is closer to the geometric center O. It is understood that the length of the upper base is shorter than the length of the lower base. In some other embodiments, when the opening 43 is trapezoidal, the legs of the trapezoid may also be positioned closer to the geometric center O; this embodiment does not limit this.

[0075] The ear-clip earphone 30 provided in this embodiment uses a light sensor 50 to emit a detection light beam S towards the second earphone part 60 for in-ear detection. The optical axis of the detection light beam S is offset from the second earphone part 60, so most of the detection light beam S can avoid the second earphone part 60, preventing false detections caused by reflection from the second earphone part 60. The entire ear-clip earphone 30 only requires the light sensor 50 to be placed inside the first earphone part 40. This eliminates the need for a detection circuit board inside the second earphone part 60 and wiring design within the connecting bridge 80, resulting in less internal space occupation, facilitating the placement of other components, and reducing the overall size of the ear-clip earphone 30.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An ear clip-on headphone, characterized in that, include: The first earphone part includes a first earphone shell and a main board disposed inside the first earphone shell, and the first earphone shell is provided with an opening. The second earphone part is opposite to the first earphone part and is provided with a sound outlet; A connecting bridge connects the first earphone part and the second earphone part; A light sensor is disposed inside the first earphone shell and electrically connected to the motherboard. The light sensor emits detection light towards the second earphone shell through the opening, and the optical axis of the detection light is offset from the second earphone part.

2. The ear clip-on earphone according to claim 1, characterized in that, The area of ​​the light spot formed by the detection light illuminating the second earpiece is less than or equal to 20% of the total area of ​​the light spot.

3. The ear clip-on earphone according to claim 2, characterized in that, The light spot formed by the detection light is completely offset from the second earpiece.

4. The ear clip-on earphone according to claim 1, characterized in that, At least a portion of the light spot formed by the detection light illuminates the connecting bridge.

5. The ear clip-on earphone according to any one of claims 1-4, characterized in that, The first earphone shell includes a first housing and a second housing, which are disposed opposite to and connected to each other. The first housing is located on the side of the second housing facing the second earphone portion, and the opening is formed in the first housing.

6. The ear clip-on earphone according to claim 5, characterized in that, The surface of the first housing facing the second earphone portion has a geometric center, and the opening is located on the side of the geometric center near the connecting bridge.

7. The ear clip-on earphone according to claim 6, characterized in that, The first housing has a length direction and a width direction. The distance between the opening and the geometric center along the width direction is less than or equal to a / 2, and the distance between the opening and the geometric center along the width direction is less than or equal to b / 3, where a is the width of the first housing and b is the length of the first housing.

8. The ear clip-on earphone according to claim 6, characterized in that, The line connecting the center of the opening and the geometric center is perpendicular to the length direction of the first housing.

9. The ear clip-on earphone according to claim 6, characterized in that, The angle between the optical axis of the detection ray and the external tangent of the geometric center is 90°-150°.

10. The ear clip-on earphone according to any one of claims 1-4, characterized in that, The aperture d of the opening satisfies 1.5mm≤d≤5mm.

11. The ear clip-on earphone according to any one of claims 1-4, characterized in that, The opening is configured as one of the following: circular, elliptical, regular polygonal, trapezoidal, or oblong.

12. The ear clip-on earphone according to any one of claims 1-4, characterized in that, The light sensor includes a light emitter and a light receiver. The first earpiece also includes a lens bracket, a lens, and a flexible circuit board. The light emitter is electrically connected to the flexible circuit board and is used to emit detection light. The light receiver is electrically connected to the flexible circuit board and is used to receive the reflected detection light. The lens is mounted on the lens bracket and embedded in the opening. The lens is located in the optical path of the detection light.

13. The ear clip-on earphone according to claim 12, characterized in that, The inner wall of the first earphone shell is provided with a mounting groove, the opening is formed in the mounting groove, and the lens bracket is embedded in the mounting groove.

14. The ear clip-on earphone according to claim 13, characterized in that, The gap between the lens bracket and the first earphone shell is filled with sealant.

15. The ear clip-on earphone according to claim 12, characterized in that, The flexible circuit board includes a first board, a second board, and a third board connected in sequence. The light emitter and the light receiver are disposed on the first board. The second board has bent traces extending to the motherboard. The third board is electrically connected to the motherboard. The first earphone part also includes a support member. The support member is connected to the inner wall of the first earphone shell. The first board is disposed on the support member.

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