An ear support of a head-mounted smart device and a head-mounted smart device

Abstract

The utility model discloses an ear support of head-mounted intelligent equipment and head-mounted intelligent equipment, the ear support includes shell, rear -facing loudspeaker, acoustic cavity and sound hole, the rear -facing loudspeaker sets up in the position of the shell corresponding to the back of the auricle of the wearer, the sound hole is set up on the shell corresponding to the position of the front of the auricle of the wearer to release sound wave to eardrum, the acoustic cavity is located between the rear -facing loudspeaker and the sound hole to conduct sound wave from the rear -facing loudspeaker to the sound hole in reverse, through the rear -facing loudspeaker in the position corresponding to the back of the auricle of the wearer, the sound hole between the loudspeaker to the position corresponding to the front of the auricle of the wearer can set up acoustic cavity, so that the loudspeaker and acoustic cavity can be separated from each other to optimize the performance with more reasonable layout mode, and in limited space, realize high -quality audio output in combination with the reverse conduction sound wave.

Description

Technical Field

[0001] This utility model relates to the field of head-mounted smart device technology, and in particular to an ear support for a head-mounted smart device and the head-mounted smart device itself. Background Technology

[0002] Existing smart glasses typically have a fixed frame and temples as a single unit. The temples house core components such as circuit boards, batteries, and speakers for electroacoustic conversion. Due to limited internal space, the unique structure of the temples (a narrow area in contact with the ear), and user requirements regarding the size of the glasses, the circuit boards, batteries, and speakers are usually integrated at the front of the temples. Some designs place the battery at the rear of the temples, resulting in inefficient use of the internal space in the ear-contact area. This limits the flexibility of component layout, making it difficult to adopt more rational distribution methods to optimize performance. The fixed position of the acoustic system's sound outlet and the requirement for the internal speaker and acoustic cavity to be designed as a single unit, coupled with a lack of suitable cavity design, result in a dry and monotonous sound, affecting the quality and richness of the sound waves and failing to provide users with a high-quality audio experience.

[0003] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0004] The main purpose of this utility model is to provide an ear support for a head-mounted smart device and the head-mounted smart device itself, so as to achieve high-quality audio output in a limited space and optimize performance with a more reasonable layout.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model discloses an ear support for a head-mounted smart device, including a shell, a rear speaker, a sound cavity, and a sound outlet. The rear speaker is disposed on the shell at a position corresponding to the back of the wearer's auricle, and the sound outlet is opened on the shell at a position corresponding to the front of the wearer's auricle to release sound waves to the eardrum. The sound cavity is disposed between the rear speaker and the sound outlet to conduct sound waves from the rear speaker in the reverse direction to the sound outlet.

[0007] Furthermore, a multi-level sound wave processing structure is formed within the acoustic cavity.

[0008] Furthermore, the multi-stage acoustic wave processing structure includes a structure that allows the acoustic wave to diffuse and compress multiple times along the acoustic wave propagation path.

[0009] Furthermore, the multi-stage acoustic wave processing structure includes an input channel for initial acoustic wave conduction, a first diffusion channel for acoustic wave diffusion, a compression channel for acoustic wave compression, and a second diffusion channel for acoustic wave re-diffusion, which are sequentially arranged along the acoustic wave conduction path within the acoustic cavity.

[0010] Furthermore, the top and / or bottom of the acoustic cavity has an arc-shaped structure.

[0011] Furthermore, the length of the acoustic cavity accounts for 30% to 40% of the total length of the outer shell.

[0012] Furthermore, the rear speaker is spaced apart from the sound cavity, and the rear speaker and the sound cavity are connected by a 2mm to 5mm sound transmission duct.

[0013] Furthermore, at least one side wall of the acoustic cavity along the sound wave transmission path is provided with a protruding structure.

[0014] The at least one sidewall is the upper and lower walls and the bottom wall of the acoustic cavity, and the protruding structure is a reflective ridge for optimizing the reflection and transmission of sound waves.

[0015] Furthermore, the protruding structure includes at least one row of reflecting edges arranged along the direction of the sound wave propagation path, and each row includes multiple reflecting edges.

[0016] Furthermore, the ear support of the head-mounted smart device also includes a sound cavity cover plate, which is closed with one side of the outer shell to form the sound cavity, and the inner surface of the sound cavity cover plate is provided with an arc-shaped reflective surface that matches the contour of the sound cavity.

[0017] Furthermore, the ear support of the head-mounted smart device also includes a circuit board and a battery, with the circuit board and the battery disposed at the tail of the ear support.

[0018] Furthermore, a first cavity is provided inside the housing on the side of the sound cavity away from the rear speaker, and a first opening is provided at the front end of the housing. The first opening communicates with the first cavity. A positioning component is provided inside the first cavity for fitting with a connector component provided on the external bracket to connect the ear bracket to the external bracket in a way that allows for repeated manual disassembly and detachment.

[0019] The first cavity is also provided with a limiting component, which is used to limit the pluggable external connector, restrict the insertion depth of the external connector after it breaks through the positioning of the positioning component during insertion, or limit the positioning component to limit the degree of backward movement of the positioning component caused by the impact of the external connector insertion.

[0020] The positioning component is a magnetic base, which includes a cylindrical or disc-shaped magnet embedded or bonded to the limiting component. The magnetic base is disposed on the limiting component, and the magnetic base's attraction surface is the positioning surface, which is perpendicular to the insertion path direction. Thus, the detachable earpiece support leg is configured to cooperate with an external connector to achieve repeated insertion and removal by hand without overcoming sidewall friction.

[0021] The magnetic force level of the magnetic holder is between N42 and N55; the magnetic holder is cylindrical with a length of 4-6mm, of which 1-2mm is embedded in the interface component body, and 2-5mm is exposed, with a diameter of 2-5mm, and its exposed end face is the suction surface; it also includes a guide cavity (13), the cross-section of at least a portion of the guide cavity (13) in the length direction is square or flat, and the magnetic force level of the magnetic holder is N52; thus, the detachable earpiece support leg is configured to cooperate with the external connector to achieve a single-handed rubbing and repeated plugging and unplugging connection, limiting the shaking or swinging during plugging and unplugging.

[0022] The distance that the external connector can move within the guide cavity is less than 7mm.

[0023] Secondly, this utility model discloses a head-mounted smart device, including the ear support of the head-mounted smart device described in the first aspect.

[0024] Furthermore, the head-mounted smart device is one of smart glasses, smart helmets, or AR head-mounted displays.

[0025] Furthermore, the ear support is the temple of the smart glasses, and the temple has a front end and a rear end; the rear speaker is located on the temple corresponding to the position behind the wearer's auricle.

[0026] Furthermore, the smart glasses include an eye socket component, a temple, and an ear support. The temple is fixedly connected to the eye socket component. The temple is provided with a connector component structure, and the ear support is provided with an interface component. Through the cooperation of the interface component and the connector component, the connection between the temple and the temple can be repeatedly disassembled and reassembled by hand.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: The ear support and head-mounted smart device disclosed in this utility model, through the design of reverse conduction of the rear speaker and the separation design of the speaker and acoustic cavity (sound cavity), transmit the sound waves of the speaker to an independent acoustic cavity located in the middle of the ear support near the ear; by placing the speaker at the position corresponding to the back of the wearer's auricle, a sound cavity can be set between the speaker and the sound outlet position corresponding to the front of the wearer's auricle, so that the speaker and the sound cavity can be separated from each other, thereby optimizing performance with a more reasonable layout, and combined with reverse conduction of sound waves, achieving high-quality audio output in a limited space.

[0028] In a further design, by freeing up space through a rear-mounted speaker layout, a multi-level sound wave processing structure can be formed in the acoustic cavity. The sound waves are emitted by the speaker diaphragm and, through the multi-level sound wave processing structure in the acoustic cavity, the sound effect is finely adjusted multiple times before being transmitted to the human eardrum, thereby optimizing the sound quality and achieving higher quality audio output within a limited space.

[0029] In a further embodiment, the multi-stage sound wave processing structure includes a structure that diffuses and compresses the sound waves multiple times along the sound wave conduction path. This allows the sound waves to undergo a multi-stage processing mechanism of diffusion-compression-diffusion-compression during the multi-layer diffusion and compression conduction process in the acoustic cavity. The sound effect is finely adjusted multiple times before being transmitted to the human eardrum, optimizing acoustic performance, solving the problem of dry and monotonous sound effects, making the sound waves fuller and more three-dimensional, improving the audio experience, and further meeting the user's demand for high-quality sound effects.

[0030] In addition, the rear speaker's reverse conduction design can improve space utilization and optimize internal space. Core components such as circuit boards, batteries, and speakers can all be integrated into the tail of the ear bracket. The rear integration of core components makes full use of the space at the tail of the ear bracket, greatly freeing up the acoustic space in the front and middle of the ear bracket of the head-mounted smart device, thus improving the audio experience and performance of the head-mounted smart device.

[0031] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the head-mounted smart device according to an embodiment of the present invention.

[0033] Figure 2 This is a layout diagram of the acoustic system according to an embodiment of the present utility model.

[0034] Figure 3 This is an exploded view of the acoustic cavity cover and the main outer shell of an embodiment of this utility model.

[0035] Figure 4This is a schematic diagram of the sound wave transmission path in an embodiment of the present invention (open cover state).

[0036] Figure 5 This is a schematic diagram of the sound wave transmission path (closed state) according to an embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the sound wave transmission path inside the sound cavity in an embodiment of the present invention.

[0038] Figure 7 This is a schematic diagram of the acoustic cavity channel and multi-level sound wave transmission in an embodiment of the present invention.

[0039] Figure 8 This is a schematic diagram of the reflective edges of the upper and lower covers of the sound cavity in an embodiment of this utility model.

[0040] Figures 9-1 to 9-7 This is a schematic diagram of the ear support and the external support in an embodiment of the present invention, as well as the actual product after the support is in place.

[0041] Explanation of icon numbers:

[0042] 1. Outer shell; 2. Rear speaker; 3. Earpiece; 4. Sound cavity; 401. Input channel; 402. First diffusion channel; 403. Compression channel; 404. Second diffusion channel; 5. Sound outlet; 6. Front sound cavity of the speaker; 7. Sound cavity cover plate; 9. Reflecting edge; 31. Front frame of the glasses; 32. Temples of the glasses; 33. Ear support body; 12. Magnetic base; 13. Guiding cavity; 14. Magnet; 22. Magnetic head. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of this utility model.

[0044] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for both fixing and circuit / signal connectivity.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] This invention addresses the problems of insufficient acoustic space utilization and dry sound effects in existing head-mounted smart devices by proposing an innovative design concept based on reverse conduction from a rear speaker and multi-stage sound wave processing in the acoustic cavity. By placing the speaker at the rear of the ear support, space is freed up to construct an independent acoustic cavity structure. Sound waves undergo multi-stage diffusion and compression processing before being conducted to the eardrum through a sound outlet located in front of the wearer's ear. This aims to overcome the spatial limitations of traditional acoustic systems, optimize the sound wave conduction path, and improve the fullness and stereo effect of the sound quality. Simultaneously, it frees up space in the front and middle section of the ear support to optimize the layout of internal components.

[0048] See Figures 1 to 7 This utility model provides a head-mounted smart device and its ear support. The ear support includes a shell 1, a rear speaker 2, a sound cavity 4, and a sound outlet 5. The rear speaker 2 is located on the shell 1 at a position corresponding to the back of the wearer's auricle 3. The sound outlet 5 is located on the shell 1 at a position corresponding to the front of the wearer's auricle 3 to release sound waves to the eardrum. The sound cavity 4 is located between the rear speaker 2 and the sound outlet 5 to conduct sound waves from the rear speaker 2 in the reverse direction to the sound outlet 5. A multi-level sound wave processing structure is formed inside the sound cavity 4 to help optimize sound quality.

[0049] It should be noted that, Figure 1 and Figure 2The auricle 3 in the figure is only to show the front and back corresponding positions of the ear support when it is worn on the wearer's auricle. That is, the rear speaker 2 is set on the outer shell 1 corresponding to the position behind the wearer's auricle 3, and the sound outlet 5 is opened on the outer shell 1 corresponding to the position in front of the wearer's auricle 3. The part where the wearer's auricle 3 overlaps with the ear support should actually be that the auricle 3 is on top and the ear support is on the bottom. That is, the auricle 3 partially covers the ear support. The attached figure clearly shows the part of the ear support, with the ear support displayed above the auricle 3.

[0050] This invention relates to a head-mounted smart device whose ear support utilizes a rear-mounted speaker with reverse sound transmission (sound waves are transmitted from the rear speaker to the front sound outlet) to free up space. This design separates the speaker from the acoustic cavity (sound chamber), transmitting the sound waves from the speaker to an independent acoustic cavity located in the middle of the ear support's outer shell 1, near the ear, and then through the sound outlet to the wearer's ear. The sound waves are emitted by the speaker diaphragm and undergo a multi-stage diffusion-compression transmission process within the sound chamber. This multi-stage processing mechanism of diffusion-compression-diffusion-compression results in multiple fine-tuning of the sound effect before it reaches the eardrum, solving the problem of dry and monotonous sound and making the sound waves fuller and more three-dimensional, thus enhancing the audio experience and meeting users' demands for high-quality sound. Furthermore, the rear-mounted speaker with reverse transmission design also improves space utilization and optimizes the internal space.

[0051] See Figure 7In a preferred embodiment, the multi-stage acoustic wave processing structure in the acoustic cavity 4 includes a structure that diffuses and compresses the acoustic wave multiple times along the acoustic wave propagation path. Further, the multi-stage acoustic wave processing structure includes, sequentially arranged along the acoustic wave propagation path, an input channel 401 for initial acoustic wave propagation, a first diffusion channel 402 for acoustic wave diffusion, a compression channel 403 for acoustic wave compression, a second diffusion channel 404 for further acoustic wave diffusion, and an outlet hole 5 for final acoustic wave release. The input channel 401 has a length of 5mm to 7mm and a width of 1mm to 2mm; preferably, the input channel 401 has a length of 6.3mm and a width of 1.2mm. The first diffusion channel 402 has a length of 18mm to 24mm and a width of 12mm to 18mm. The first diffusion channel 402 has a length of 21mm and a width of 15mm; the compression channel 403 has a length of 4mm-5mm and a width of 0.8mm-1.5mm, preferably 4.6mm and 1.0mm; the second diffusion channel 404 has a length of 32mm-40mm and a width of 8mm-15mm, preferably 36mm and 10mm; the sound outlet 5 has a length of 7mm-10mm and a width of 1mm-3mm, preferably 8.4mm and 1.7mm. This diffusion-compression-diffusion-compression process improves the speaker's sound quality.

[0052] See Figures 2 to 7 In a preferred embodiment, the top and / or bottom of the sound cavity 4 are arc-shaped. The length of the sound cavity 4 is 35mm to 45mm, the width is 5mm to 8mm, and the depth is 1mm to 2mm. Its preferred dimensions are 40mm in length, 6mm in width, and 1.5mm in depth.

[0053] In some embodiments, the size of the acoustic cavity 4 accounts for 30% to 40% of the total length of the housing 1.

[0054] In some embodiments, the rear speaker 2 and the acoustic cavity 4 are spaced apart and connected by a sound transmission tube with a length of 2mm to 5mm. This design, separating the speaker and the acoustic cavity, transmits sound waves through the sound transmission tube to an independent acoustic cavity located in the middle of the outer shell 1 of the ear support, near the ear. The sound waves are emitted by the speaker diaphragm, compressed through a small side hole at the bottom of the speaker cavity, and released through a wide, enclosed cavity. The continuous sound wave pressure is then compressed and released again through a small sound outlet, and conducted to the eardrum through the air. During the multi-layered compression and transmission of the sound waves within the cavity, the sound effect undergoes multiple fine-tuning processes, resolving the problem of a dry and monotonous sound and improving the audio experience.

[0055] like Figures 2 to 7As shown, in some embodiments, the rear speaker 2 is a racetrack-shaped single speaker. The length of the rear speaker 2 is 10mm to 20mm, the width is 8mm to 12mm, and the thickness is 3mm to 5mm. Its preferred dimensions are 15mm in length, 10mm in width, and 4.0mm in thickness. Figure 3 and Figure 4 As shown, the rear speaker 2 is equipped with a front speaker cavity 6 that is 10mm to 20mm long, 8mm to 12mm wide, and 1mm to 3mm high. Preferably, the front speaker cavity 6 is 15mm long, 10mm wide, and 2.0mm high. In other embodiments, the rear speaker 2 may also be circular, elliptical, or other similar structures.

[0056] In some embodiments, the sound outlet 5 has a racetrack-shaped structure, with a preferred size of 8.2 mm in length and 1.7 mm in width; in other embodiments, the sound outlet 5 may also have a circular, elliptical, or other similar structure.

[0057] like Figure 3 As shown, in some embodiments, the ear support also includes a sound cavity cover plate 7, which is closed with the outer shell 1 of the ear support to form a sound cavity 4. The inner surface of the sound cavity cover plate 7 is provided with an arc-shaped reflective surface that matches the contour of the sound cavity 4.

[0058] The acoustic cavity 4 has a protruding structure on at least one of its sidewalls along the sound wave conduction path. The protruding structure includes at least one row of reflecting edges arranged along the sound wave conduction path, with each row including multiple reflecting edges. For example... Figure 8 As shown, in a preferred embodiment, the upper and lower walls and the bottom wall of the acoustic cavity 4 are provided with reflective ridges 9 for optimizing the reflection and transmission of sound waves.

[0059] In some embodiments, the ear support of the head-mounted smart device also includes a circuit board, a battery, etc. In this embodiment, the core components such as the circuit board, battery, and speaker can all be integrated into the tail of the outer shell 1 of the ear support. The core components are integrated at the rear, making full use of the space at the tail of the outer shell 1 of the ear support. This effectively solves the problem of unused space between the outer shell 1 of the ear support and the ear contact area, improves the flexibility of the internal component layout, optimizes the overall performance of the device, and provides more possibilities for the functional expansion of smart glasses.

[0060] In some embodiments, a first cavity is provided inside the housing 1 on the side of the sound cavity 4 away from the rear speaker 2, and a first opening is provided at the front end of the housing 1. The first opening communicates with the first cavity. A positioning component is provided inside the first cavity for fitting with a connector component provided on the external bracket to connect the ear bracket to the external bracket in a way that allows for repeated disassembly by hand.

[0061] The head-mounted smart device can be one of the following: smart glasses, smart helmet, or AR head-mounted display.

[0062] For example, the head-mounted smart device is a type of smart glasses. In one embodiment, the ear support is the temple of the smart glasses, and the temple has a front end and a rear end. In this embodiment, the rear speaker 2 is located on the temple corresponding to the position behind the wearer's ear.

[0063] In another embodiment, the smart glasses include an eye socket component, a temple, and the aforementioned ear support. The temple can be fixedly connected to the eye socket component. The structure of the temple is equivalent to an external support, and it is provided with a connector component structure, so that the ear support can be repeatedly detached and connected to the temple (equivalent to the external support) by hand. That is, the temple can be inserted into the first cavity from the first opening at the front end of the outer shell 1 of the ear support and be adapted to the positioning component to achieve a tight fit connection.

[0064] The following further describes specific embodiments of this utility model.

[0065] Example 1

[0066] This utility model discloses a smart glasses system with an integrated structure of a rear speaker and a reverse-conduction sound cavity. For example... Figures 1 to 7 As shown, the smart glasses consist of three main components: the front frame, the temples, and the smart module. The smart module employs a unique acoustic layout, with the temples and smart module section functioning as the ear supports for the aforementioned head-mounted smart device. A racetrack-shaped single-unit speaker (preferably 15mm long, 10mm wide, and 4.0mm thick) is positioned at the rear of the outer shell 1 of the temple, behind the wearer's ear. This layout effectively frees up acoustic space in the front and middle section of the outer shell 1 of the temple.

[0067] The acoustic system of the smart glasses includes a rear speaker 2 located behind the ear, an arc-shaped sound cavity 4 located above the ear, and a racetrack-shaped sound outlet 5 (preferably 8.2mm long and 1.7mm wide) located in front of the ear. These three parts form a complete sound wave transmission path through acoustic design. The rear speaker 2 and the sound cavity 4 adopt a separate structural design and are connected by a sound transmission channel of 2mm to 5mm in length, achieving an optimized spatial layout of the acoustic components.

[0068] The specific structure of sound cavity 4 is as follows Figure 3 As shown, the sound cavity 4 is formed by the outer shell 1 and the sound cavity cover 7. When the sound cavity cover 7 is closed with the outer shell 1, an arc-shaped sound cavity is formed, which is 40 mm long, 6 mm wide, and 1.5 mm deep, and its size accounts for about 30% to 40% of the total length of the outer shell 1 of the temple. The top and bottom of the sound cavity 4 are both arc-shaped structures with a length of 40 mm and a width of 6 mm. This special shape provides an ideal environment for sound wave conduction. The inner surface of the sound cavity cover 7 is provided with a reflective surface that conforms to the contour of the sound cavity 4.

[0069] The propagation process of sound waves within acoustic cavity 4 is as follows Figures 5 to 7 As shown, the sound wave conduction path includes: First, the sound wave is emitted from the diaphragm of the speaker 2 and enters the sound cavity 4 through the input channel 401 (preferably 6.3 mm long and 1.2 mm wide); then it enters the arc-shaped first diffusion channel 402 (preferably 21 mm long and 15 mm wide), where the sound wave undergoes initial diffusion; next, it passes through the compression channel 403 (preferably 4.6 mm long and 1.0 mm wide), where the sound wave is effectively compressed; then it enters the arc-shaped second diffusion channel 404 (preferably 36 mm long and 10 mm wide) for further diffusion; finally, it is released through the sound outlet 5 (preferably 8.4 mm long and 1.7 mm wide). This multi-stage processing mechanism of diffusion-compression-diffusion-compression significantly improves the sound quality.

[0070] Figure 7 It demonstrates the transmission process of sound waves within the cavity, including reflection, diffusion, and compression.

[0071] Furthermore, the internal structure of the acoustic cavity 4 is optimized as follows: Figure 8 As shown, the upper and lower walls and the bottom wall are provided with reflective prisms 9. These prism structures work in conjunction with the arc-shaped channel of the acoustic cavity 4 to guide sound waves to be reflected and transmitted multiple times within the enclosed cavity.

[0072] In actual operation, sound waves are emitted from a speaker behind the auricle and enter the sound cavity 4 through a sound transmission channel. Inside the cavity, the sound waves undergo multiple reflections and optimized conduction before finally being transmitted back to the ear through the sound outlet 5 located in front of the auricle. During this process, the sound waves undergo multiple layers of compression and conduction, resulting in multiple fine-tuning of the sound effect, effectively solving the problem of dry and monotonous sound effects in traditional designs.

[0073] In a specific embodiment of this utility model, the reverse conduction acoustic cavity of the smart glasses reflects the sound waves emitted by the rear speaker and guides them to the ear canal through the arc structure, while reducing sound leakage through the reverse conduction path.

[0074] The acoustic performance of the smart glasses according to a specific embodiment of the present invention was further tested below.

[0075] (1) Sound pressure level (SPL) and directivity

[0076] Experimental method: An artificial head was used in an anechoic chamber to simulate the position of a human ear, and the sound pressure level distribution at different distances and angles was tested.

[0077] Experimental data:

[0078] a. Intra-auricular sound pressure level: At a distance of 10cm, the sound pressure level in the mid-to-high frequency range (2kHz~8kHz) can reach 80dB~90dB, while the low frequency range (below 200Hz) is usually lower (50dB~60dB) due to the open design.

[0079] b. Sound leakage control: At a distance of 20cm, the sound pressure level of the sound leakage behind is 15dB to 20dB lower than that inside the ear, and the sound leakage in front is 10dB to 15dB lower, effectively reducing environmental interference.

[0080] c. Directionality: Through curved surface reflection, the concentration of sound waves is increased by 30% within a range of ±45°.

[0081] The results above show that the smart glasses can ensure that sound is accurately transmitted to the ear, reduce environmental interference, and thus improve the efficiency of directional sound transmission.

[0082] (2) Frequency response and distortion

[0083] Experimental method: The frequency response curve in the ear was tested using a swept frequency signal (20Hz~20kHz), and the total harmonic distortion (THD) was analyzed.

[0084] Experimental data:

[0085] a. Frequency response curve: The response is flat (±3dB) in the mid-frequency range (200Hz~5kHz), attenuates by about 5dB~8dB in the high-frequency range (above 8kHz) due to air conduction, and attenuates by 10dB~15dB in the low-frequency range (below 200Hz) due to cavity limitations.

[0086] b. Distortion rate: At a sound pressure level of 85dB, THD <1% (mid-high frequency), while THD in the low frequency range may rise to 3% to 5%.

[0087] The results above show that the smart glasses improve low-frequency response and high-frequency clarity by adjusting the cavity volume parameters, thereby optimizing the frequency response characteristics.

[0088] (3) Leakage audio spectrum analysis

[0089] Experimental method: Leakage signals were collected at different locations in an anechoic chamber, and their spectral distribution was analyzed.

[0090] Experimental data:

[0091] a. Leakage frequency spectrum: The main energy is concentrated in 200Hz~8kHz, which is consistent with the trend of the intra-ear spectrum, but the overall sound pressure level is reduced by 10dB~20dB.

[0092] b. Reverse conduction effect: Through reverse sound field cancellation, high-frequency sound leakage (>4kHz) can be reduced by 5dB to 8dB.

[0093] The results above show that the smart glasses control the diffusion of sound waves into the surrounding space through acoustic structure design and algorithm optimization, thereby reducing sound leakage.

[0094] This invention relates to a head-mounted smart device that places the speaker on the rear of the earpiece, freeing up space for the acoustic cavity. A unique multi-level acoustic cavity processing mechanism constructs a multi-stage acoustic cavity to achieve reverse sound wave transmission. By controlling the sound wave transmission path, the sound waves are made fuller and more three-dimensional, ultimately improving sound quality. Furthermore, the rear-mounted speaker reverse transmission design allows all core components such as the circuit board, battery, and speaker to be integrated into the rear of the earpiece, significantly freeing up acoustic space in the front and middle sections of the earpiece and optimizing the overall performance of the device.

[0095] Furthermore, the reflective angles and curved channels within the acoustic cavity work together to optimize the sound wave diffusion characteristics, thereby enhancing the audio experience. The entire system maintains a compact structure while improving sound quality, making it suitable for use with head-mounted smart devices.

[0096] Example 2

[0097] This embodiment focuses on the positioning and limiting components within the first cavity, wherein the positioning component employs magnetic positioning, such as... Figure 9-1 As shown, the positioning component is a magnetic base 12, which cooperates with the magnetic head 22 on the external connector for positioning through attraction (hereinafter referred to as the interface structure). The magnetic base includes a cylindrical or disc-shaped magnet embedded or bonded to the limiting component. The magnetic base is disposed on the limiting component, and the attraction surface of the magnetic base is the positioning surface, which is perpendicular to the insertion path direction; thus, the detachable earpiece leg is configured to cooperate with the external connector to achieve a single-handed, repetitive insertion and removal connection. The magnetic force level of the magnetic base is between N42 and N55, preferably N52; the magnetic base is cylindrical, with a length of 4-6mm, preferably 5mm, of which 1-3mm is embedded in the interface component body, preferably 1.5mm, and the exposed portion is 2-5mm, preferably 3.5mm, with a cross-sectional area of ​​12-79mm². 2 28.3mm is preferred. 2 The diameter is 2-5mm, preferably 3mm. Its exposed end face is the suction surface. In the figure: 31, front frame of the glasses; 32, temple of the glasses; 33, ear support body. The limiting component is used to limit the insertion depth of the pluggable external connector, restricting the insertion depth of the external connector after it breaks through the positioning component during insertion, or to limit the degree of backward displacement of the positioning component caused by the impact of the external connector insertion.

[0098] Figure 9-2 This is a breakdown diagram of the interface structure. Figure 9-3 This is an exploded view of the detachable temple interface assembly. Magnets 14 are installed inside both the magnetic base 12 and the magnetic head 22.

[0099] The guide cavity 13 has a square or flat cross-section in at least a portion of its length. This prevents the connector assembly from rotating during insertion; thus, the detachable earpiece leg is configured to engage with an external connector to achieve a single-handed, repetitive linear insertion and removal connection without overcoming sidewall friction and limiting wobbling or swinging during insertion and removal.

[0100] The distance that the external connector can move within the guide cavity is less than 7mm, and this moving distance is sufficient to achieve the operation.

[0101] Preferably, the magnetic suction head 22 has a magnetic force level between N42 and N55, preferably N52; the magnetic suction head is cylindrical (or prismatic, disc-shaped, or square-shaped, etc.), with a length of 4-6 mm, preferably 5 mm, of which 1-2 mm is embedded in the connector assembly body, preferably 1.5 mm, and the exposed portion is 2-5 mm, preferably 3.5 mm, with a diameter of 2-5 mm, preferably 3 mm; its exposed end face is the attraction surface. The connector assembly body has a square or flat cross-section in at least a portion of its length direction, matching the guide cavity. Figure 9-4 The specific dimensions of this embodiment are given.

[0102] The interface method in this application is not limited to magnetic attraction; it can also be a snap-fit, positioning bead, pin, threaded structure, etc. Magnetic attraction is preferred. The magnetic attraction structure is the only one that uses end-face positioning. Its advantages include a large end-face contact area, a tight face-to-face contact between the magnetic base and the magnetic head, reducing the likelihood of shaking or wobbling, and the absence of frictional force during insertion and removal, thus reducing wear and increasing the number of insertions and removals. The side of the plug only serves as a guide and further assists in reducing shaking and wobbling. Other structures use side-positioning on the plug, such as positioning pins and snap-fits, which are clipped onto the side of the connector rather than the end face. If too loose, they cannot limit the shaking or wobbling of the plug; if too tight, they are difficult to remove. Moreover, relying on friction for positioning leads to wear after many insertions and removals. Even if there is no shaking or wobbling initially, it will gradually develop over time. This can easily cause a "crooked leg" phenomenon due to shaking or wobbling at the interface and connector when removing glasses with one hand. This embodiment solves this problem.

[0103] like Figure 9-5 The image shown is a schematic diagram of the glasses when using a magnetic connector in this embodiment. Figure 9-6 This refers to the case where the interface component is installed in the charging case. There are two types of interface components: one with electronic components (made into an earphone shape) and one without electronic components. Figure 9-7 This is another case where the interface component is installed in the charging case, where there is only one type of interface component, which is equipped with electronic components (earphone type).

[0104] The ear support of the head-mounted smart device in this application can be equipped with an interface component for cooperating with a connector component on an external support. This allows the ear support to be repeatedly and manually detached from the external support. When the external support is the temple of an eyeglass, it can be used as the temple of an eyeglass, in which case the external support is actually half of an eyeglass temple. In this way, the ear support in this application can be used as a universal component for connecting eyeglass temples, and can be plugged into various different eyeglasses. Therefore, it has strong versatility, forming a completely new category, which can be called "Universal Eyeglass Support," meaning "universal for all kinds of eyeglasses"; or "Ear-Ear Support," or "Ear-Ear Support." Because it has an earphone function and can also be used as part of the eyeglass temple, it can also be called "Ear-Ear Support." The eyeglass temple part, because it is only half of an eyeglass temple and has a connector device that is not a regular eyeglass temple, is still a completely new category and can be called "Universal Ear Support," meaning "universal for all kinds of earphones"; or "Ear-Connecting Eyeglass," meaning "eyeglasses that connect to earphones"; or "Ear-Ear Support," "Ear-Ear Eyeglass," or "Eye-Ear Support."

[0105] The background section of this utility model may include background information about the problems or circumstances surrounding the present utility model, rather than a description of prior art by others. Therefore, the content included in the background section is not an admission of prior art by the applicant.

[0106] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope defined by the appended claims.

Claims

1. An ear support for a head-mounted smart device, characterized in that, The device includes a housing, a rear speaker, a sound cavity, and a sound outlet. The rear speaker is positioned on the housing behind the wearer's ear, and the sound outlet is located on the housing in front of the wearer's ear to release sound waves to the eardrum. The sound cavity is located between the rear speaker and the sound outlet to conduct sound waves from the rear speaker in the reverse direction to the sound outlet. The sound cavity contains a multi-level sound wave processing structure.

2. The ear support for the head-mounted smart device according to claim 1, characterized in that, The multi-stage acoustic wave processing structure includes a structure that diffuses and compresses the acoustic wave multiple times along the acoustic wave propagation path.

3. The ear support for the head-mounted smart device according to claim 1, characterized in that, The multi-stage acoustic wave processing structure includes an input channel for initial acoustic wave conduction, a first diffusion channel for acoustic wave diffusion, a compression channel for acoustic wave compression, and a second diffusion channel for acoustic wave re-diffusion, all formed sequentially along the acoustic wave conduction path within the acoustic cavity.

4. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, The top and / or bottom of the acoustic cavity has an arc-shaped structure.

5. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, The length of the sound cavity accounts for 30% to 40% of the total length of the outer shell.

6. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, The rear speaker is spaced apart from the sound cavity, and the rear speaker and the sound cavity are connected by a 2mm~5mm sound transmission duct.

7. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, The acoustic cavity has a protruding structure on at least one of the side walls along the sound wave transmission path.

8. The ear support for the head-mounted smart device according to claim 7, characterized in that, The at least one sidewall is the upper and lower walls and the bottom wall of the acoustic cavity, and the protruding structure is a reflective ridge for optimizing the reflection and transmission of sound waves.

9. The ear support for the head-mounted smart device according to claim 7, characterized in that, The protruding structure includes at least one row of reflective prisms arranged along the direction of the sound wave propagation path, and each row includes multiple reflective prisms.

10. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, It also includes a cavity cover plate, which closes one side of the outer shell to form the cavity, and the inner surface of the cavity cover plate is provided with an arc-shaped reflective surface that matches the contour of the cavity.

11. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, It also includes a circuit board and a battery, which are disposed at the tail of the ear support.

12. The ear support for the head-mounted smart device according to any one of claims 1 to 3, characterized in that, The housing has a first cavity located on the side of the sound cavity away from the rear speaker, and the front end of the housing has a first opening that communicates with the first cavity. The first cavity has a positioning component for cooperating with a connector component on the external bracket to allow the ear bracket to be repeatedly and manually disassembled and connected to the external bracket.

13. The ear support for the head-mounted smart device according to claim 12, characterized in that, The first cavity is also provided with a limiting component, which is used to limit the pluggable external connector, restrict the insertion depth of the external connector after it breaks through the positioning of the positioning component during insertion, or limit the positioning component to limit the degree of backward movement of the positioning component caused by the impact of the external connector insertion.

14. The ear support for the head-mounted smart device according to claim 13, characterized in that, The positioning component is a magnetic base, which includes a cylindrical or disc-shaped magnet embedded or bonded to the limiting component. The magnetic base is disposed on the limiting component, and the magnetic base's attraction surface is the positioning surface, which is perpendicular to the insertion path direction. Thus, the ear bracket of the head-mounted smart device is configured to cooperate with an external connector to achieve repeated insertion and removal by hand without overcoming sidewall friction.

15. The ear support for the head-mounted smart device according to claim 14, characterized in that, The magnetic force level of the magnetic holder is between N42 and N55; the magnetic holder is cylindrical with a length of 4-6mm, of which 1-2mm is embedded in the interface component body, and 2-5mm is exposed, with a diameter of 2-5mm, and its exposed end face is the suction surface; it also includes a guide cavity (13), the cross-section of at least a portion of the guide cavity (13) in the length direction is square or flat, and the magnetic force level of the magnetic holder is N52; thus, the ear bracket of the head-mounted smart device is configured to cooperate with the external connector to achieve a single-handed, repetitive linear plug-and-play connection, limiting the shaking or swaying during plugging and unplugging.

16. The ear support for the head-mounted smart device according to claim 15, characterized in that, The distance that the external connector can move within the guide cavity is less than 7mm.

17. A head-mounted smart device, characterized in that, The ear support for the head-mounted smart device as described in any one of claims 1 to 15.

18. The head-mounted smart device according to claim 17, characterized in that, The head-mounted smart device is one of the following: smart glasses, smart helmet, or AR head-mounted display.

19. The head-mounted smart device according to claim 18, characterized in that, The ear support is the temple of the smart glasses, and the temple has a front end and a rear end; the rear speaker is located on the temple corresponding to the position behind the wearer's ear.

20. The head-mounted smart device according to claim 18, characterized in that, The smart glasses include an eye socket component, a front temple, and an ear bracket that serves as the rear temple. The front temple is fixedly connected to the eye socket component. The front temple is provided with a connector component structure, and the ear bracket is provided with an interface component. Through the cooperation of the interface component and the connector component, the connection between the ear bracket and the front temple can be repeatedly disassembled and reassembled by hand.

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