Audio system and smart glasses

Abstract

Disclosed in the embodiments of the present disclosure are an audio system and a pair of smart glasses. The audio system comprises a carrier and a speaker unit. The carrier has a first side wall and a second side wall, wherein a sound-releasing hole is formed in the first side wall, and a sound-outputting hole is formed in the second side wall. The speaker unit is arranged in the carrier, the carrier and the speaker unit cooperate to form a front cavity and a rear cavity, the sound-releasing hole is in communication with the rear cavity, and the sound-outputting hole is in communication with the front cavity. An included angle is formed between the speaker unit and the first side wall, a first end of the speaker unit is close to the first side wall, and a second end of the speaker unit is away from the first side wall. The pair of smart glasses comprises a glasses frame, glasses temples, and at least one audio system, which is arranged in the glasses temples.

Description

Audio systems and smart glasses

[0001] This disclosure claims priority to Chinese patent application number CN202311021372.8, filed with the Patent Office of China on August 14, 2023, and entitled “Audio System and Smart Glasses,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the technical field of electronic devices, and in particular to an audio system and smart glasses. Background Art

[0003] Sound, as a medium for human-computer interaction, is often integrated into electronic devices. As electronic devices become increasingly diverse and smaller, the size of audio systems often needs to be limited. For example, for both comfort and aesthetics, smart glasses often have narrow temples. This narrow design compresses the size of the audio system. Therefore, improving the sound quality of small audio systems has become a pressing technical challenge.

[0004] Summary of the Invention

[0005] Embodiments of the present disclosure provide an audio system and smart glasses.

[0006] On the one hand, the present disclosure provides an audio system, including: a carrier and a speaker unit, the carrier having a first side wall and a second side wall, a sound leakage hole is provided on the first side wall, and a sound outlet hole is provided on the second side wall, the speaker unit is arranged in the carrier, the carrier and the speaker unit cooperate to form a front cavity and a rear cavity, the sound leakage hole is connected to the rear cavity, and the sound outlet hole is connected to the front cavity, the speaker unit and the first side wall have an angle, the first end of the speaker unit is close to the first side wall, and the second end of the speaker is away from the first side wall.

[0007] On the other hand, the present disclosure provides a pair of smart glasses comprising: a frame, temples, and at least one of the above-mentioned audio systems, wherein the audio system is disposed in the temples.

[0008] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0010] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0011] FIG1 is a schematic diagram showing the three-dimensional structure of an audio system provided by an embodiment of the present disclosure;

[0012] FIG2 shows an exploded view of an audio system provided by an embodiment of the present disclosure;

[0013] FIG3 is a schematic diagram showing the internal structure of an audio system provided by an embodiment of the present disclosure;

[0014] FIG4 shows a cross-sectional view of an audio system provided by an embodiment of the present disclosure;

[0015] FIG5 is a schematic diagram showing the internal structure of the audio system provided by an embodiment of the present disclosure after removing part of the carrier;

[0016] FIG6 shows a cross-sectional view taken along line AA in FIG5 ;

[0017] FIG7 shows a partial structural diagram of a first structure of an audio system provided by an embodiment of the present disclosure;

[0018] FIG8 shows a partial structural diagram of a second structure of an audio system provided by an embodiment of the present disclosure;

[0019] FIG9 is a schematic structural diagram showing a carrier of an audio system provided by an embodiment of the present disclosure provided with inclined steps;

[0020] FIG10 shows another perspective view of FIG9;

[0021] FIG11 is a schematic cross-sectional view showing a structure in which a speaker unit of an audio system provided by an embodiment of the present disclosure is tilted in a direction perpendicular to the plane where the carrier is located;

[0022] FIG12 shows a side view of the smart glasses provided by an embodiment of the present disclosure.

[0023] In the figure, 1. carrier; 1a. retaining rib; 11. first shell; 111. first side wall; 111a. sound leakage hole; 112. second side wall; 1121. convex arc section; 1122. sound outlet hole; 113. third side wall; 114. enclosure; 115. inclined step; 116. non-inclined step; 12. second shell; 13. front cavity; 14. rear cavity; 15. isolation cavity; 2. speaker unit; 3. smart glasses; 31. frame; 32. temples; 321. location for setting the audio system; 322. inclined section.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] Figure 1 shows the appearance structure of the audio system 100 provided by the present disclosure, Figure 2 shows an exploded view of the audio system 100 provided by the present disclosure, and Figure 3 shows the internal structure of the audio system 100 provided by the present disclosure. The audio system 100 may include a carrier 1 and a speaker unit 2.

[0029] In some optional embodiments, the carrier of the audio system includes a first side wall 111 and a second side wall 112. The speaker unit 2 can be tilted in the carrier 1, forming an angle with the first side wall 111 and the second side wall 112, as shown in FIG3 .

[0030] In some optional embodiments, the carrier 1 includes multiple sidewalls, each forming a cavity, and the speaker unit 2 is disposed within the cavity formed by the carrier 1. A non-connected front cavity and rear cavity are formed between the speaker unit 2 and the walls of the carrier 1; the front cavity communicates with the outside world via a sound outlet, and the rear cavity communicates with the outside world via a sound leakage hole. The speaker unit 2 is disposed at an angle relative to the sidewalls where the sound outlet and / or sound leakage holes are located.

[0031] In some optional embodiments, the carrier 1 may include a first side wall 111 having a planar surface and a second side wall 112 having a curved surface. The speaker unit 2 may be arranged tilted relative to the first side wall 111, as shown in FIG3 .

[0032] The carrier 1 has a first side wall 111 and a second side wall 112. The first side wall 111 is provided with a sound leakage hole 111a, and the second side wall 112 is provided with a sound outlet hole 1122. The speaker unit 2 can be set in the carrier 1, and the carrier 1 and the speaker unit 2 cooperate to form a front cavity 13 and a rear cavity 14. The sound leakage hole 111a can be connected to the rear cavity 14, and the sound outlet hole 1122 can be connected to the front cavity 13. The speaker unit 2 and the first side wall 111 have an angle, and the first end of the speaker unit 2 is close to the first side wall 111, and the second end of the speaker is away from the first side wall 111. Therefore, the speaker unit 12 is placed obliquely on the plane of the carrier 1, and the plane of the carrier 1 is perpendicular to the thickness direction of the speaker unit 2.

[0033] It should be noted that the embodiment of the present disclosure does not limit the first end and the second end of the speaker unit 2, and the first end and the second end are respectively located on opposite sides of the speaker unit 2. When the speaker unit 2 is rectangular, the first end and the second end can be respectively located at the two ends of the speaker unit 2 along the length direction, and the first end and the second end can also be respectively located at the two ends of the speaker unit 2 along the width direction. The first end and the second end of the speaker unit 2 are mainly used to limit the inclined placement of the speaker unit 2 in the carrier 1. Optionally, the first side wall 111 may also have a first end and a second end, the first end of the first side wall 111 is close to the first end of the speaker unit 2, and the second end of the first side wall 111 is close to the second end of the speaker unit 2. The distance from the above-mentioned sound leakage hole 111a to the second end of the first side wall 111 is greater than the distance from the sound leakage hole 111a to the first end of the first side wall 111.

[0034] It is understood that the first side wall 111 and the second side wall 112 may be two opposite side walls, as shown in Figure 2. Alternatively, the first side wall 111 and the second side wall 112 may be two adjacent side walls, which is not limited here.

[0035] Optionally, the sound leakage hole is arranged along the first side wall, and the sound output hole is arranged along the second side wall.

[0036] Figure 4 shows a cross-sectional view of the audio system 100, where L indicates the distance between the speaker unit 2 and the sound leakage hole 111a. As can be seen from Figure 4, in this embodiment of the present application, by tilting the speaker unit 2 relative to the carrier 1, the distance L between the speaker unit 2 and the sound leakage hole 111a can be increased, thereby making the airflow through the sound leakage hole 111a smoother.

[0037] As shown in FIG3 , the internal structure diagram of the audio system 100, the carrier 1 can be a long and narrow box (for example, the aspect ratio of the cavity of the carrier 1 is between 1.4 and 2.5), and the speaker unit 2 is placed obliquely in the carrier 1. When the speaker unit 2 vibrates and makes a sound, the airflow generated in the rear cavity 14 can flow in the direction indicated by the arrow. When the speaker unit 2 is placed obliquely as shown in FIG3 , the distance between it and the sound leakage hole 111a can be made larger, especially the distance between it and the sound leakage hole 111a near the second end of the speaker 2 can be made larger. For example, the distance can be greater than 1.4 mm. Therefore, the flow of the airflow in the sound leakage hole 111a of the rear cavity 14 can be smoother. The speaker unit 2 is placed obliquely in the plane of the carrier 1 to ensure that when the width direction is limited, the air leakage hole 111a on the carrier 1 has sufficient airflow channel, ensuring that the airflow in the rear cavity 14 is smoother, without airflow noise, and the harmonic distortion THD will also be reduced.

[0038] It is understandable that the overall volume of the audio system disclosed herein is relatively small. Considering factors such as sound quality and cost, the volume of the speaker unit 2 is generally not too small. To ensure the sound quality of the audio system, it is generally adapted to the volume of the cavity of the carrier 1. For example, the length and width of the speaker unit 2 are slightly smaller than the length and width of the cavity of the carrier 1. In this case, if the distance between the speaker unit 2 and the side wall of the carrier 1 is too close, it will easily affect the sound quality. The solution disclosed herein can increase the distance between the speaker unit 2 and the sound leakage hole 111a, thereby ensuring smoother airflow in the rear cavity 14.

[0039] Optionally, the audio system 100 can be installed in an electronic device structure, such as the temple of smart glasses. When the audio system 100 is installed in a narrow electronic device structure, such as the temple of smart glasses, the carrier 1 often needs to be designed to be long and narrow. In this case, tilting the speaker unit 2 can increase the distance between it and the sound leakage hole 111a. It is understood that if the carrier 1 does not have a long and narrow design, the speaker unit 2 can also be tilted to further increase the distance between it and the sound leakage hole 111a.

[0040] In some optional embodiments, the carrier 1 may also be part of the housing of an electronic device. For example, the carrier 1 may be the temple of smart glasses, or the housing of an earphone or other electronic device with sound-generating functionality. For example, if the carrier 1 is the temple of smart glasses, a speaker unit 2 may be disposed within the temple, and the temple housing may have a first sidewall for sound leakage holes and a second sidewall for sound output holes.

[0041] In some optional embodiments, the audio system 100 can use a variety of methods to control the front cavity 13 and the rear cavity 14 to radiate sound waves to the outside world in a manner equivalent to an acoustic dipole. Specifically, the front cavity 13 and the rear cavity 14 radiate the first sound wave and the second sound wave to the outside world through the sound outlet 1122 and the sound leakage hole 111a respectively, so that the first sound wave or the second sound wave can be heard by the human ear in the near field near the sound outlet 1122 or the sound leakage hole 111a. The second sound wave is offset from the first sound wave in phase (for example, 180 degrees apart), so that the energy of the first sound wave and the second sound wave can cancel each other out in the far field, thereby reducing the sound leakage of the audio system and protecting privacy. The audio system can realize the acoustic dipole in a variety of ways. As an example, the audio system can be provided with two speaker units, and each speaker unit can form a front cavity and a rear cavity respectively in combination with a carrier. The amplitude of the sound waves of each speaker unit is controlled to be basically the same and the phase is basically opposite, so that the front cavity and the rear cavity can radiate sound waves in the manner of an equivalent acoustic dipole.

[0042] In some embodiments of the present disclosure, as shown in Figures 2 and 3, the first side wall 111 and the second side wall 112 are spaced apart and arranged opposite to each other. When the sound outlet 1122 and the sound leakage hole 111a are respectively arranged on two opposite side walls, the phases of the sound waves radiated by the sound hole 1122 and the sound leakage hole 111a can be made substantially opposite, thereby achieving privacy protection in the form of an acoustic dipole. For example, the speaker unit 2 is placed inside the carrier 1, a front cavity is formed between the speaker unit and one side of the carrier 1, and a rear cavity is formed between the speaker unit and the other side of the carrier. The front cavity can be connected to the outside air through the sound outlet, and the rear cavity is circulated with the outside air through the air leakage hole. The sound waves of the rear cavity and the sound waves of the front cavity will be superimposed on the outside, and the two are in opposite phases, which will cancel each other out after superposition. As a result, non-users (for example, users of non-electronic devices) cannot clearly hear the sound of the sound outlet, thereby achieving the purpose of preventing privacy leakage. As an example, the audio system 100 can be set on the temples of the smart glasses. When the smart glasses are worn on the user's head, the temples are placed on the user's ears, so that one of the sound outlet 1122 and the sound leakage hole 111a is close to the user's ear hole, and the other is far away from the user's ear hole. One of the first sound wave and the second sound wave emitted by the front cavity and the rear cavity can be heard by the user, and the other can be radiated to the outside world. The second sound wave and the first sound wave will be superimposed at a position far away from the user's ear. Since the first sound wave and the second sound wave have a phase offset (for example, the phase is completely opposite), they will cancel each other out after superposition, so that people around the user of the smart glasses cannot hear the sound emitted by the smart glasses, thereby protecting the user's privacy.

[0043] In some optional embodiments, the first side wall 111 may be provided with one or more sound leakage holes 111a, each of which is spaced apart along the length of the first side wall 111. The distance between at least one sound leakage hole 111a and the speaker unit 2 is no less than 1.4 mm. When at least two sound leakage holes 111a are provided on the first side wall 111, the distance between the sound leakage hole 111a near the second end of the speaker unit 2 and the speaker unit 2 is greater than 1.4 mm. When only one sound leakage hole 111a is provided on the first side wall 111, the distance between the sound leakage hole 111a and the speaker unit 2 may be greater than 1.4 mm. This larger distance between the sound leakage hole 111a and the speaker unit 2 can facilitate smoother airflow through the rear cavity through the sound leakage hole 111a. Furthermore, this ensures that, even when the width is restricted, the air leakage hole 111a has sufficient airflow channel, ensuring smoother airflow in the rear cavity, eliminating airflow noise, and reducing harmonic distortion (THD).

[0044] In some optional embodiments, as shown in FIG3 , when the speaker unit 2 is mounted on the carrier 1 , the air vent of the speaker unit 2 and a sound vent 111a are positioned relative to each other, so that the airflow discharged from the air vent can be discharged more smoothly through the sound vent, and the gas flow path is smooth, further reducing the airflow resistance, so that the airflow in the rear cavity 14 is smoother and there is no airflow noise. In the solution disclosed in this embodiment, the distance between the sound vent 111a and the speaker unit 2 can be understood as the distance between the sound vent 111a and the air vent on the speaker unit 2 in the direction perpendicular to the first side wall 111. The relative arrangement of the air vent and the sound vent 111a can make the distance between the air vent and the sound vent sufficiently large, so that the air vent in the rear cavity has sufficient airflow channel, ensuring that the airflow in the rear cavity is smoother and there is no airflow noise.

[0045] As shown in Figure 3, the internal structure of the audio system shows the "H"-shaped portion on the speaker unit 2, which serves as the vent for the speaker unit 2. This portion is roughly aligned with the sound vent 111a on the first sidewall 111, defining the lengthwise position of the speaker unit 2. Furthermore, the distance between the sound vent 111a and the speaker unit 2 is defined; a larger distance results in smoother airflow through the sound vent 111a.

[0046] In some optional embodiments, in the speaker unit 2, the edge of the surface where the air bleed hole is located that is close to the sound bleed hole 111a is the first edge, and the distance between the first edge and the inner upper surface of the carrier 1 (not the inner surface of the side wall) is m. In this embodiment, m can be greater than or equal to 0.5 mm. It is understandable that the above-mentioned first edge can also be described as an edge of the speaker unit 2 that is close to the sound bleed hole and extends along the length direction of the carrier 1, and the surface where the first edge of the speaker unit 2 is located can cooperate with the carrier 1 to form the rear sound cavity 14. It can be seen from the airflow direction of the air bleed hole shown by the arrow in Figure 4 that the size defined by m is the smallest size position in the airflow direction, and the size at this position is greater than or equal to 0.5 mm, which can ensure smoother airflow in the rear cavity. It is understandable that the above-mentioned speaker unit 2 can be placed at an angle so that the position defined by m is away from the sound bleed hole, the distance between the inner upper surface of the carrier 1 and the first edge is larger, and the airflow in the rear cavity is smoother.

[0047] In some optional embodiments, as shown in Figure 4, the distance between the second side of the above-mentioned speaker unit 2 and the inner lower surface of the carrier 1 (not the inner surface of the side wall) can be n. In this embodiment, n can be greater than or equal to 0.4 mm. The above-mentioned second side can be the side of the speaker unit 2 close to the sound outlet and extending along the length direction of the carrier 1. The surface where the second side of the speaker unit 2 is located can cooperate with the carrier 1 to form a front sound cavity 13. It can be seen from the front sound cavity 13 and the sound outlet in Figure 4 that the size defined by n is the smallest position from the front cavity to the sound outlet, and the size at this position is greater than or equal to 0.4 mm, which can ensure that the airflow in the front cavity is smoother.

[0048] In some optional embodiments, the distances between the first and second ends of the speaker unit 2 and the first side wall 111 may be a first distance and a second distance, respectively, and the second distance may be 3 to 5 times the first distance. The solution disclosed in this embodiment can control the inclination of the speaker unit 2 relative to the first side wall to be sufficiently large, thereby allowing sufficient airflow channels for the sound leakage holes in the rear cavity, ensuring smoother airflow in the rear cavity and eliminating airflow noise.

[0049] In some optional embodiments, the side wall of the speaker unit 2 near the sound leakage hole forms an angle α with the first side wall 111, and 3° < α < 10°. The solution disclosed in this embodiment can control the degree of inclination of the speaker unit 2 relative to the first side wall to be sufficiently large, thereby allowing sufficient airflow through the sound leakage hole in the rear cavity, ensuring smoother airflow in the rear cavity and eliminating airflow noise.

[0050] In some optional embodiments, the inner length of the first side wall is 2 to 3 times the effective inner length of the sound leakage hole along the first side wall. In the disclosed embodiment, the sound leakage hole has a large extension length along the first side wall, which is conducive to smooth airflow in the rear cavity, and the airflow can be discharged from the rear cavity more smoothly.

[0051] In some optional embodiments, the length of the speaker 2 may be 1.5 to 2.5 times the effective inner length of the sound leakage hole 111a along the first side wall 111. The sound leakage hole 111a extends moderately relative to the length of the speaker 2, ensuring smooth airflow in the rear cavity and allowing the air to be discharged smoothly from the rear cavity.

[0052] In some optional embodiments, the audio system may be provided with at least two sound leakage holes 111a, disposed on the first sidewall 111, and spaced apart along the length of the first sidewall 111. The effective inner length of the sound leakage holes along the first sidewall defined above can be understood as the sum of the effective inner lengths of the individual sound leakage holes along the first sidewall. That is, regardless of the number of sound leakage holes 111a provided in the audio system, the sum of the effective inner lengths of these holes 111a along the first sidewall 111 must meet the specified requirements. Figure 3 shows the internal structure of the audio system, and Figure 4 shows a cross-sectional view of the audio system. The audio system carrier 1 may include two separate structures: a first housing 11 and a second housing 12. The first housing 11 may have a first sidewall 111 and a second sidewall 112. The first housing 11 and the second housing 12 may interlock, forming a front cavity 13 between the speaker unit 2 and the first housing 11, and a rear cavity 14 between the second housing 12, the first housing 11, and the speaker unit 2. The separated structure of the carrier 1 can reduce the difficulty of installing the audio system.

[0053] As an example, the carrier 1 can be the temple of the smart glasses, the first shell can be the inner shell of the temple, and the second shell can be the outer shell of the temple. Alternatively, the carrier 1 can be a box placed on the temple of the smart glasses, with the first shell in the carrier 1 positioned near the inner shell of the temple, and the second shell positioned near the outer shell of the temple. When the smart glasses are worn, the inner shell faces the wearer's skin, and the outer shell faces away from the wearer's skin.

[0054] The carrier 1 is generally in the shape of an elongated strip, with the sound output hole and the sound leakage hole located at the two side end faces of the carrier 1 along the width direction. The carrier 1 may be a flat strip-shaped structure, and the carrier 1 may be installed in a specific structure of an electronic device, which may be provided with a first avoidance hole and a second avoidance hole. For example, the specific structure for installing the carrier may be the temple of smart glasses, with a first avoidance hole and a second avoidance hole respectively provided on the two side end faces of the temple along the width direction. The first avoidance hole may be connected to the sound leakage hole 111a, and the second avoidance hole may be connected to the sound output hole 1122. The sound output hole and the sound leakage hole are at different distances from the wearer's ear hole, and the sound output hole 1122 is generally closer to the user's ear hole.

[0055] Optionally, as shown in Figure 3, the second side wall 112 can have an outward convex arc section 1121, and the first shell 11 also has a third side wall 113 connecting the first side wall 111 and the outward convex arc section 1121. A corner portion is formed between the third side wall 113 and the outward convex arc section 1121, and a corner of the speaker unit 2 can face the corner portion.

[0056] As an example, the position where the speaker unit 2 is set on the temple is the position close to the ear hole when the user wears the smart glasses. As shown in Figure 12, the speaker unit 2 can be set at the position indicated by the number 321. In order to facilitate wearing and make the sound hole 1122 closer to the human ear, and to meet the requirements of wearing comfort, the area near the sound hole 1122 can be designed to be a convex arc. Therefore, the carrier 1 needs to be provided with a convex arc section 1121, and the tail of the temple 32 has a downwardly extending inclined section 322. When the user wears the smart glasses 3, the convex arc section 1121 is located in front of the user's ear, and the inclined section 322 is located behind the user's ear. The convex arc section 1121 and the inclined section 322 cooperate to avoid the user's ear and cooperate with the user's ear to limit the position.

[0057] Optionally, as shown in Figures 2 and 3, the first housing 11 may further include a fourth sidewall connecting the first sidewall 111 and the second sidewall 112, with the fourth sidewall being positioned opposite the third sidewall 113. A corner of the speaker unit 2 abuts against the outwardly convex arcuate segment 1121, and at least one of the two corners of the speaker unit 2 facing away from the outwardly convex arcuate segment 1121 abuts against either the second sidewall 112 or the fourth sidewall, thereby maximizing the tilt of the speaker unit 2.

[0058] In this embodiment of the present application, to maximize the tilt of the speaker unit 2, when one corner of the speaker unit 2 abuts against the outwardly convex arc segment 1121, the speaker unit 2 is rotated about this vertex. When at least one of the two corners of the speaker unit 2, away from the outwardly convex arc segment 1121, abuts against either the second side wall or the fourth side wall, the speaker unit 2 reaches its maximum tilt angle. At this point, the tilt angle of the speaker unit 2 is maximum, or the distance between the air vent and the sound vent 111a is maximum.

[0059] In some embodiments of the present disclosure, as shown in FIG2 , a retaining wall 114 may be provided within the first housing 11, and the speaker unit 2 may be embedded in and fixed to the inner side of the retaining wall 114. The peripheral end surface of the speaker unit 2 and the inner side surface of the retaining wall 114 fit tightly together, and the retaining wall 114 prevents the speaker unit 2 from shifting or shaking, thereby ensuring a stable and reliable assembly structure for the speaker unit 2.

[0060] In some embodiments of the present disclosure, as shown in Figures 4, 5, and 6, the speaker unit 2 divides the internal cavity of the carrier into a main cavity and a front cavity 13. Ribs 1a are provided in the carrier 1 to divide the main cavity into a rear cavity 14 and an isolation cavity 15.

[0061] In electronic devices, in order to improve the sound quality of the audio system, it is usually necessary to make the volume of the front cavity and the volume of the rear cavity as close as possible. In addition, the effective areas of the sound outlet 1122 and the sound leakage hole 111a are also as close as possible to significantly improve the isolation of the sound field. In the actual design of the carrier 1, the volume of the rear cavity 14 is often larger than the volume of the front cavity 13. In the above embodiment, the rear cavity 14 can be separated by a part of the space of the retaining rib 1a, thereby reducing the volume of the rear cavity 14 and making the volume of the rear cavity 14 as close as possible to the volume of the front cavity 13. The retaining rib 1a can be as shown in Figure 6, which can divide the main cavity into the rear cavity 14 and the isolation cavity 15 isolated outside the rear cavity.

[0062] Taking the carrier 1 as an example, when the width of the temple increases, by keeping the distance between the speaker unit 2 and the effective sound outlet 1122 essentially constant, and the distance between the speaker unit 2 and the temple's inner shell essentially constant, the volume of the front cavity 13 can be kept essentially constant. By then reducing the volume of the rear cavity 14 by providing the aforementioned retaining ribs, the volumes and volume ratio of the front and rear cavities 13 and 14 can be kept as constant as possible. The solution disclosed in this embodiment allows temples of different sizes to use the same audio algorithm, thereby reducing the cost of the audio system.

[0063] In some optional embodiments of the present disclosure, as shown in Figures 5 and 7, the audio system can include at least a first barrier rib. This first barrier rib can be located between the third sidewall 113 and the speaker unit 2, with the speaker unit 2 positioned along the first barrier rib and adjacent to the first barrier rib. In this embodiment, the first barrier rib and the isolation cavity 15 created by the first barrier rib exist between the speaker unit 2 and the third sidewall 113. That is, along the length of the carrier 1, the speaker unit 2, the first barrier rib, and the third sidewall 113 can be positioned sequentially.

[0064] In some optional embodiments of the present disclosure, as shown in Figure 8 , the first retaining rib may not be provided on the carrier 1. In this case, the speaker unit 2 is positioned adjacent to the third side wall 113 and is close to the third side wall 113. In this case, there is neither a retaining rib nor an isolation cavity between the speaker unit 2 and the third side wall 113.

[0065] Without affecting the front cavity 13 and the rear cavity 14 of the audio system, the isolation cavity 15 isolated by the first retaining rib in the audio system as shown in Figure 5 or Figure 7 can be cut. In the sound cavity structure after cutting, the first retaining rib can serve as a third side wall, which can reduce the space occupied by the audio system in the electronic device, making it easier to design other structures in the electronic device. The isolation cavity 15 as shown in Figure 5 can be cut to obtain a structure as shown in Figure 8. For example, the audio system is set in the temple of smart glasses. After cutting the isolation cavity 15, the audio system can reduce the space where the temple is located, making room for other structures of the smart glasses.

[0066] In some embodiments of the present disclosure, as shown in FIG6 , the isolation cavity 15 extends along the thickness direction of the carrier 1 , and the extension length of the isolation cavity 15 is greater than the thickness of the speaker unit 2 .

[0067] The isolation cavity 15 is characterized by a large distance from the inside of the first shell 11 to the inside of the second shell 12, which is greater than the dimension of the speaker unit 2 in the thickness direction of the carrier 1. When the carrier surface area is small, the volume of the rear cavity 14 can be minimized, thereby making the volumes of the front cavity 13 and the rear cavity 14 equivalent. Providing an isolation space within the carrier 1 can further reduce the weight of the temple and is easy to implement.

[0068] In some embodiments of the present disclosure, as shown in Figure 7, the carrier 1 may have a first shell 11 and a second shell 12, at least one of the first shell 11 and the second shell 12 is provided with a side wall, the side wall includes a first side wall 111 and a second side wall 112, and the two ends of the retaining rib 1a are respectively connected to the side walls, and the retaining rib 1a and the side wall enclose to form an isolation cavity 15.

[0069] The retaining rib 1a can be set as a closed ring, and the two ends of the retaining rib 1a can also be connected to the side wall respectively. The retaining rib 1a and the side wall are combined to form a closed isolation cavity. By connecting the two ends of the retaining rib 1a to the side wall respectively, the structure can be simplified and the structural strength of the side wall can be increased.

[0070] In some optional embodiments, in a cross section of the carrier 1 in the thickness direction, the extension direction of the outer edge of the speaker unit 2 is not parallel to the side wall of the carrier 1, as shown in Figure 11. The carrier 1 has a first side wall 111, which is provided with a sound leakage hole 111a. The cross section of the carrier 1 includes the cross section of the first side wall 111.

[0071] Figures 9, 10 and 11 show some optional embodiments of the audio system. The carrier 1 may include a first shell 11 and a second shell 12 in sequence along the thickness direction, and the first shell 11 has a first side wall 111 and a second side wall 112. A front cavity 13 is formed between the speaker unit 2 and the first shell 11, and a partial rear cavity 14 is formed between the second shell 12 and the speaker unit 2. The side of the speaker unit 2 close to the sound leakage hole 111a is inclined toward the side away from the second shell 12, and the side of the speaker unit 2 close to the sound outlet hole 1122 is inclined toward the second shell 12. It can be understood that the audio system in this embodiment can tilt the speaker unit 2 in a variety of ways. For example, the speaker unit 2 can be tilted by gluing it to the carrier 1 at an inclined angle.

[0072] In some optional embodiments, the speaker unit 2 may have a diaphragm, and the side of the speaker unit 2 having the diaphragm may be arranged toward the first housing 11. The diaphragm is arranged toward the first housing 11, and a front cavity 13 may be formed between the speaker unit 2 and the inner wall of the first housing 11.

[0073] The speaker unit 2 can also be tilted in the direction of the plane perpendicular to the carrier 1, and the tilted setting of the speaker unit 2 has a dual beneficial effect: first, the volume of the front cavity 13 is increased, so that the sum of the volumes of the front cavity 13 and the rear cavity 14 is basically not reduced, and the volumes of the front cavity 13 and the rear cavity 14 are closer, thereby improving the isolation of the audio system; second, the size of the air flow channel of the front cavity 13 is increased. As shown in Figure 11, the distance between the speaker unit 2 and the second shell 12 near the sound outlet is greater than the distance between the speaker unit 2 and the second shell 12 near the sound outlet, so that the speaker unit 2 is tilted, and the inclined surface of the speaker unit 2 can also make the airflow smoother.

[0074] In some optional embodiments of the present disclosure, as shown in FIG10 , inclined steps 115 may be provided on both sides of the first housing 11 along the length direction of the first side wall 111, and the speaker unit 2 is supported on the inclined steps 115. The inclined steps 115 have a flat support surface that can stably support the speaker unit and improve the structural stability of the speaker unit assembly.

[0075] The speaker unit 2 can be supported on the inclined steps 115 shown in Figure 10. Since the steps at both ends of the carrier 1 are inclined steps (the inclined steps are located on both sides of the length direction of the first side wall 111), the speaker unit 1 can be tilted in a direction perpendicular to the plane of the carrier. This further controls the volume of the front and rear cavities while keeping the total volume of the front and rear cavities close, thereby improving the isolation of the audio system. For example, if the speaker unit 1 is not tilted in a direction perpendicular to the plane of the carrier, the volume ratio of the front cavity 13 to the rear cavity 14 can be 1:1.2. However, by tilting the speaker unit in a direction perpendicular to the plane of the carrier, the volume ratio of the front and rear cavities is closer to 1.1:1.1. In addition, the tilted placement of the speaker unit can also make the airflow of the sound leakage hole 111a in the rear cavity smoother, reducing airflow noise. As shown in the cross-sectional view of the audio system in Figure 11, the tilted placement of the speaker unit can increase the volume of the front cavity. At the same time, the value a shown in Figure 11 will increase, thereby making the airflow in the front cavity 13 smoother. As for the rear cavity 14 , the speaker unit is placed at an angle so that the b value can be increased, thereby making the airflow in the rear cavity 14 smoother.

[0076] It should be noted that two non-inclined steps 116 may be provided on the carrier, the two non-inclined steps 116 being spaced apart and located at both ends of the inclined step 115. Both ends of the speaker unit 2 may be stably supported on the two non-inclined steps 116.

[0077] As shown in FIG12 , some embodiments of the present disclosure provide smart glasses, including: a frame 31, temples 32, and at least one of the above-mentioned audio systems, and the audio system can be arranged in the temples 32. The carrier of the audio system can be a part of the structure of the temples 32. When the temples are worn on the user's head, the distance between the sound outlet 1122 and the user's ear is usually smaller than the distance between the sound leakage hole 111a and the user's ear. It should be noted that the audio system can be set at the position of the audio system shown by the number 321 in FIG12, which makes the audio system closer to the user's ear when the user wears the smart glasses.

[0078] The first sound wave generated by the front cavity 13 is emitted through the sound outlet 1122, which is located near the ear canal. The second sound wave generated by the speaker rear cavity 14 is emitted through the sound leakage hole 111a, which is oriented away from the ear canal. The second sound wave is offset in phase with the first sound wave. For example, the first and second sound waves are 180 degrees offset in phase. In this way, the first sound wave can be heard by the user, while the second sound wave and the first sound wave will cancel each other out after superposition. Therefore, people around the smart glasses user cannot hear the sound from the sound outlet, thus protecting the privacy of the smart glasses user.

[0079] Optionally, the temple includes a temple body and an ear portion, the temple body is connected to the frame, and the audio system is arranged between the temple body and the ear portion. That is, the position 321 for arranging the audio system can be located between the temple body and the ear portion.

[0080] The position 321 where the audio system is set is the part near the ear hole when the user wears the smart glasses. In order to make it easier to wear and the sound hole closer to the human ear, the area near the sound hole on the audio system can be designed as a convex arc segment, as shown in Figure 12.

[0081] The temples are provided with thickness end surfaces on both sides along the width direction, each having a first avoidance hole and a second avoidance hole. When the user wears the smart glasses, the first avoidance hole is away from the ear, while the second avoidance hole is close to the ear. The first avoidance hole is connected to the sound leakage hole 111a, and the second avoidance hole is connected to the sound output hole 1122.

[0082] In some optional embodiments, the temples are typically long strips, with the sound outlet holes 1122 and the sound leakage holes 111a located on the side end surfaces of the temples along the width direction. The temples are flat strips, with a first avoidance hole and a second avoidance hole respectively provided on the side end surfaces of the temples along the width direction, so that the first avoidance hole and the second avoidance hole are at different distances from the user's ear holes. The airflows discharged from the first avoidance hole and the second avoidance hole are in opposite phases (for example, 180 degrees apart) and cancel each other out when superimposed. This prevents the person at the far end of the smart glasses from carefully hearing the sound from the sound outlet holes 1122, thereby preventing privacy leaks.

[0083] The above description has been provided for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An audio system, comprising: A carrier, the carrier having a first side wall and a second side wall, the carrier being provided with a sound leakage hole and a sound outlet hole, the sound outlet hole and the sound leakage hole being used to radiate a first sound wave and a second sound wave outwards respectively; A speaker unit, wherein the speaker unit is arranged in the carrier, the carrier and the speaker unit cooperate to form a front cavity and a rear cavity, the sound leakage hole is connected to the rear cavity, the sound outlet hole is connected to the front cavity, the speaker unit and the first side wall have an included angle, the first end of the speaker unit is close to the first side wall, the second end of the speaker is far away from the first side wall, and the first end and the second end are respectively located on opposite sides of the speaker unit.

2. The audio system according to claim 1, wherein An included angle between the first side wall and a side wall of the speaker unit close to the first side wall is α, and the value of α is between 3° and 10°.

3. The audio system according to claim 1 or 2, wherein: The distance between the first side of the speaker unit and the inner surface of the carrier is not less than 0.5 mm, the first side is the side of the speaker unit close to the sound leakage hole and extending along the length direction of the carrier, and the surface where the first side of the speaker unit is located cooperates with the carrier to form the rear sound cavity.

4. The audio system according to any one of claims 1 to 3, wherein: The distance between the second side of the speaker unit and the inner surface of the carrier is not less than 0.4 mm. The second side is the side of the speaker unit close to the sound outlet and extending along the length direction of the carrier. The surface where the second side of the speaker unit is located cooperates with the carrier to form the front sound cavity.

5. The audio system according to any one of claims 1 to 4, wherein: The sound leakage hole is arranged along the first side wall, and the sound outlet hole is arranged along the second side wall.

6. The audio system according to any one of claims 1 to 5, wherein: At least one sound leakage hole is arranged on the first side wall, and the sound leakage holes are arranged in sequence and spaced apart along the length direction of the first side wall. The distance between at least one sound leakage hole and the speaker unit is not less than 1.2 mm.

7. The audio system according to any one of claims 1 to 6, wherein: The inner length of the first side wall is 2 to 3 times the effective inner length of the sound leakage hole along the direction of the first side wall; The length of the speaker unit is 1.5 to 2.5 times the effective inner length of the sound leakage hole along the first side wall direction; The sound leakage hole is arranged on the first side wall, and the audio system includes at least two sound leakage holes; The effective inner length of the sound leakage hole along the first side wall direction is the sum of the effective inner lengths of the at least two sound leakage holes along the first side wall direction.

8. The audio system according to any one of claims 1 to 7, wherein: The carrier has a first shell and a second shell; The first housing has the first side wall and the second side wall; The first shell and the second shell are buckled together, the front cavity is formed between the speaker unit and the first shell, and the rear cavity is formed between the second shell, the first shell and the speaker unit.

9. The audio system of claim 8, wherein: The second side wall has an outwardly convex arc segment; The first housing further comprises a third side wall connecting the first side wall and the outwardly convex arc segment; A corner portion is formed between the third side wall and the outwardly convex arc segment; One corner of the speaker unit faces the corner portion.

10. The audio system according to claim 8 or 9, wherein: The first side wall and the second side wall are spaced apart and arranged opposite to each other; The first shell also includes a fourth side wall, which connects the first side wall and the second side wall, and the fourth side wall and the third side wall are positioned opposite to each other. A baffle is set in the first shell, and the speaker unit is embedded in and fixed on the inner side of the baffle. The speaker unit is set along the third side wall, and the speaker unit is close to the third side wall. At least one of the two corners of the speaker unit away from the convex arc segment abuts against any one of the second side wall and the fourth side wall.

11. The audio system according to any one of claims 8 to 10, wherein: The first shell and the second shell are buckled together, the speaker unit divides the internal cavity of the carrier into a main cavity and the front cavity, a retaining rib is arranged in the carrier, both ends of the retaining rib are respectively connected to the side wall, the retaining rib divides the main cavity into the rear cavity and the isolation cavity, the front cavity is formed between the speaker unit and the first shell, the rear cavity is formed between the second shell, the first shell and the speaker unit, the retaining rib and the side wall are enclosed to form the isolation cavity, the isolation cavity extends along the thickness direction of the carrier, and the extension length of the isolation cavity is greater than the thickness of the speaker unit, The barrier ribs at least include a first barrier rib, and the first barrier rib is located between the third side wall and the speaker unit; the speaker unit is arranged along the first barrier rib, and the speaker unit is close to the first barrier rib.

12. The audio system according to any one of claims 1 to 11, wherein: The carrier includes a first shell and a second shell in sequence along the thickness direction; The first housing has the first side wall and the second side wall, and the first housing is provided with inclined steps on both sides along the length direction of the first side wall, and the speaker unit is supported on the inclined steps; The speaker unit has a diaphragm, and one side of the speaker unit having the diaphragm is arranged toward the first shell, the front cavity is formed between the speaker unit and the first shell, and part of the rear cavity is formed between the second shell and the speaker unit; A side of the speaker unit close to the sound leakage hole is inclined toward a side away from the second shell, and a side of the speaker unit close to the sound outlet hole is inclined toward the second shell.

13. A smart glasses comprising: Frames and temples; At least one audio system as described in any one of claims 1-12, wherein the audio system is arranged on the temple.

14. The smart glasses according to claim 13, wherein: The speaker unit is arranged on the temple, so that when the user wears the smart glasses, the speaker unit is close to the user's ear hole; the area near the sound outlet of the carrier is arranged as a convex arc section, so that the sound outlet is close to the human ear; the tail of the temple has an inclined section extending downward, and when the user wears the smart glasses, the convex arc section and the inclined section are respectively located on both sides of the user's ear, so that the convex arc section and the inclined section cooperate with each other to avoid the user's ear and limit the user's ear.

15. The smart glasses according to claim 14, wherein: The carrier is a temple of the smart glasses, the speaker unit is arranged inside the temple, and the carrier has a first side wall for arranging a sound leakage hole and a second side wall for arranging a sound output hole.

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