Voice generator and smart wearable devices

Abstract

This invention discloses a sound-generating unit and a smart wearable device, relating to the field of sound energy conversion technology. The sound-generating unit includes a housing, a magnetic circuit system, and a vibration system. A receiving cavity is formed inside the housing, and the magnetic circuit system is located within the receiving cavity. The magnetic circuit system includes a central magnetic circuit and side magnetic circuits. The side magnetic circuits include multiple sub-magnets arranged around the outer periphery of the central magnetic circuit. An airflow channel is formed between the end of each sub-magnet and the inner wall surface of the housing. At least one sub-magnet has a guiding surface on the side facing the airflow channel, so that the cross-sectional area of ​​the corresponding airflow channel increases from the inside of the sound-generating unit to the outside. The vibration system includes a voice coil and a diaphragm connected to the voice coil. The central magnetic circuit and the side magnetic circuits are spaced apart and form a gap, with the voice coil at least partially disposed within the gap. This sound-generating unit can effectively increase the effective opening area of ​​the rear cavity, reduce airflow velocity, and improve sound quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound energy conversion, in particular to a sound emitting monomer and an intelligent wearable device. BACKGROUND

[0002] With the development of the market of portable consumer electronics, miniature sound emitting devices are widely used, and with the multi-function and miniaturization design of portable terminal electronic products, users have higher and higher requirements for sound quality. Some loudspeakers have poor sound quality. SUMMARY

[0003] The main purpose of the present application is to provide a sound emitting monomer and an intelligent wearable device, which aims to solve the technical problem of poor sound quality of some loudspeakers in the related art.

[0004] To achieve the above-mentioned purpose, according to some embodiments of the present application, a sound emitting monomer is provided, comprising:

[0005] A shell, wherein an accommodating cavity is formed inside the shell;

[0006] A magnetic circuit system, wherein the magnetic circuit system is located in the accommodating cavity, the magnetic circuit system comprises a center magnetic circuit and a side magnetic circuit, the side magnetic circuit comprises a plurality of side sub-magnets arranged around the outer periphery of the center magnetic circuit, the end of each side sub-magnet and the inner wall surface of the shell form an airflow channel, and at least one side of the side sub-magnet facing the airflow channel is provided with a flow guide surface, so that the cross-sectional area of the corresponding airflow channel increases from the inside to the outside of the sound emitting monomer.

[0007] A vibration system, wherein the vibration system comprises a voice coil and a diaphragm connected with the voice coil, the center magnetic circuit and the side magnetic circuit are spaced apart and form a gap, and the voice coil is at least partially arranged in the gap.

[0008] In some embodiments, the side sub-magnets comprise two first side sub-magnets distributed on opposite sides of the center magnetic circuit along a first direction, and two second side sub-magnets distributed on opposite sides of the center magnetic circuit along a second direction, and the first direction is perpendicular to the second direction.

[0009] At least one of the first side sub-magnets is provided with the flow guide surface; and / or,

[0010] At least one of the second side sub-magnets is provided with the flow guide surface.

[0011] In some embodiments, at least one of the side sub-magnets has an inner side facing the center magnetic circuit, an outer side opposite to the inner side, and two side sides connecting the inner side and the outer side respectively, the length of the inner side is greater than the length of the outer side, and the length of the side sub-magnet having the flow guide surface decreases from the inner side to the outer side.

[0012] In some embodiments, each of the side sides comprises a straight side and an inclined side connected to each other, the straight side is connected to the inner side away from the inclined side, the inclined side is connected to the outer side away from the straight side, and the inclined side is the flow guide surface; or,

[0013] Each of the side sides comprises a straight side and a curved side connected to each other, the straight side is connected to the inner side away from the curved side, the curved side is connected to the outer side away from the straight side, and the curved side is the flow guide surface.

[0014] In some embodiments, each of the side sides comprises an inclined side, two sides of the inclined side are connected to the inner side and the outer side respectively, and the inclined side is the flow guide surface; or,

[0015] Each of the side sides comprises a curved side, two sides of the curved side are connected to the inner side and the outer side respectively, and the curved side is the flow guide surface.

[0016] In some embodiments, each of the side sides comprises an inclined side and a curved side connected to each other, the flow guide surface comprises the inclined side and the curved side;

[0017] The side of the inclined side away from the curved side is connected to the inner side, and the side of the curved side away from the inclined side is connected to the outer side; or,

[0018] The side of the curved side away from the inclined side is connected to the inner side, and the side of the inclined side away from the curved side is connected to the outer side.

[0019] In some embodiments, the inner side and the outer side are arranged in parallel, a connecting line connecting the center of the inner side and the center of the outer side is defined as a symmetry axis, each of the side sides is provided with the flow guide surface, and the two flow guide surfaces are arranged in axial symmetry about the symmetry axis.

[0020] In some embodiments, the length of the side sub-magnet having the flow guide surface is less than the length of the center magnetic circuit.

[0021] In some embodiments, the magnetic circuit system comprises a magnetic yoke, the magnetic yoke comprises a rectangular central part, opposite two sides of the central part are connected with side walls extending in the same direction by bending, and the side walls are connected with bent parts extending in the opposite direction by bending at one end away from the central part, the central magnetic circuit is fixed on the central part and spaced from the side walls to form a first magnetic gap, and part of the plurality of side sub-magnets are fixed on the bent parts and spaced from the side walls to form a second magnetic gap.

[0022] In some embodiments, the central part is provided with a through hole in the central region, and the central magnetic circuit comprises a ring-shaped central magnet arranged around the periphery of the through hole.

[0023] In some embodiments, the number of vibration systems is two, and the two diaphragms are arranged on two sides of the shell along the thickness direction, and the two voice coils are connected to the two diaphragms one by one, wherein one voice coil is arranged corresponding to the first magnetic gap, and the other voice coil is arranged corresponding to the second magnetic gap.

[0024] According to some embodiments of the present application, the present application provides a smart wearable device, which comprises the sound production unit as described above.

[0025] In some embodiments, the smart wearable device is smart glasses, the smart glasses comprise a frame and a leg arranged on each side of the frame, the leg is provided with a receiving space, a main sound production hole and at least one auxiliary sound production hole in communication with the receiving space, the sound production unit is arranged in the receiving space, a main sound outlet channel is arranged between the diaphragm and the main sound production hole, the number of airflow channels is equal to the number of auxiliary sound production holes and is arranged one by one, and a secondary sound outlet channel is arranged between the airflow channel and the corresponding auxiliary sound production hole.

[0026] In some embodiments, the number of airflow channels and the number of auxiliary sound production holes are both two, and the two auxiliary sound production holes are arranged on the upper side and the lower side of the leg, respectively.

[0027] In the above scheme, by arranging a drainage surface on the side of at least one side sub-magnet facing the airflow channel, specifically, arranging a drainage surface on one or both ends of the side sub-magnet, the cross-sectional area of the airflow channel from the inside of the sound production unit to the outside shows an increasing trend. The present application can effectively increase the effective opening area of the back cavity, reduce the air flow rate, and improve the sound quality. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without any creative effort.

[0029] Figure 1 The exploded view of the sound emitting monomer of the embodiment of the present application;

[0030] Figure 2 The structural view of the sound emitting monomer of the embodiment of the present application;

[0031] Figure 3 The sectional view of the sound emitting monomer of the embodiment of the present application;

[0032] Figure 4 The partial structural view of the central magnetic circuit and the side magnetic circuit of the sound emitting monomer of the embodiment of the present application;

[0033] Figure 5 The structural view of the side sub-magnet of the sound emitting monomer of the embodiment of the present application;

[0034] Figure 6 The structural view of the side sub-magnet of the sound emitting monomer of the embodiment of the present application;

[0035] Figure 7 The structural view of the side sub-magnet of the sound emitting monomer of the embodiment of the present application;

[0036] Figure 8 The structural view of the side sub-magnet of the sound emitting monomer of the embodiment of the present application;

[0037] Figure 9 The structural view of the magnetic yoke of the sound emitting monomer of the embodiment of the present application;

[0038] Figure 10 The structural view of the side magnetic conducting plate of the sound emitting monomer of the embodiment of the present application;

[0039] Figure 11 The structural view of the magnetic yoke, the side magnetic conducting plate and the magnetic circuit system of the sound emitting monomer of the embodiment of the present application;

[0040] Figure 12 The structural view of the magnetic yoke, the voice coil and the side magnetic circuit of the sound emitting monomer of the embodiment of the present application;

[0041] Figure 13 The structural view of the sound emitting monomer of the embodiment of the present application from another perspective; Figure 12

[0042] Figure 14 ​Part structure schematic view of the temple of the smart glasses of the embodiment of the present application;

[0043] Figure 15 For Figure 14 Structure schematic view in the direction of B-B section;

[0044] Figure 16 For Figure 14 Structure schematic view in the direction of A-A section.

[0045] Explanation of reference numerals:

[0046] 10, sound emitting monomer; 1, shell; 12, containing cavity; 2, magnetic circuit system; 21, center magnetic circuit; 211, center magnet; 212, center magnetic conducting plate; 22, edge magnetic circuit; 221, edge sub-magnet; 2211, inner side surface; 2212, outer side surface; 2213, edge side surface; 22131, flow guiding surface; 22132, straight surface; 22133, inclined surface; 22134, curved surface; 223, edge magnetic conducting plate; 2231, second notch; 23, magnetic yoke; 231, center part; 2311, through hole; 232, side wall; 2321, opening; 233, bending part; 2331, first notch; 234, outer frame; 235, third notch; 3, vibration system; 31, voice coil; 32, diaphragm; 4, first magnetic gap; 5, second magnetic gap; 6, air flow channel;

[0047] 20, temple; 201, containing space; 202, main sound emitting hole; 203, auxiliary sound emitting hole; 204, main sound outlet channel; 205, auxiliary sound outlet channel.

[0048] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0051] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0052] With the development of the market of portable consumer electronics, miniature sound generating devices are widely used, and with the multi-functional and miniaturized design of portable terminal electronic products, users have higher and higher requirements for sound quality. Some loudspeakers have poor sound quality.

[0053] The applicant found through careful research that the existing loudspeakers generally adopt the design of a conventional five-magnetic circuit, that is, a design of one center magnet and four edge magnets surrounding the center magnet. The effective opening area of the rear cavity of such a design is small, and the airflow velocity in the rear cavity is large, which affects the sound quality and leads to poor sound quality of the loudspeaker. It should be noted that the rear cavity described in the present application is the cavity inside the loudspeaker. Specifically, for example, when the number of diaphragms is two, it refers to the space formed by the two diaphragms, the magnetic circuit system and the shell. When the number of diaphragms is one, it can be considered that the side of the diaphragm facing the receiving cavity of the loudspeaker and the space formed by the magnetic circuit system and the shell. Correspondingly, taking the smart wearable device as an example, the smart glasses, the front cavity refers to the channel between the diaphragm and the main sound hole of the leg.

[0054] Please refer to Figures 1 to 4 According to some embodiments of the present application, a sound generating unit 10 is provided, which comprises a shell 1, a magnetic circuit system 2 and a vibration system 3. The shell 1 forms a receiving cavity 12 inside. The magnetic circuit system 2 is located in the receiving cavity 12. The magnetic circuit system 2 comprises a center magnetic circuit 21 and an edge magnetic circuit 22. The edge magnetic circuit 22 comprises a plurality of edge sub-magnets 221 arranged around the outer periphery of the center magnetic circuit 21. The end of each edge sub-magnet 221 and the inner wall surface of the shell 1 form an airflow passage 6. The airflow in the receiving cavity 12 flows along the airflow passage 6. Figure 3The direction indicated by the middle arrow C flows out of the sound production unit 10. At least one side sub-magnet 221 is provided with a flow guide surface 22131 on the side facing the airflow passage 6, so that the cross-sectional area of the corresponding airflow passage 6 has a trend of increasing from the inside to the outside of the sound production unit 10; the vibration system 3 includes a voice coil 31 and a diaphragm 32 connected to the voice coil 31, and the center magnetic circuit 21 and the side magnetic circuit 22 are spaced apart and form a gap, and the voice coil 31 is at least partially disposed in the gap.

[0055] Taking the sound production unit 10 as a loudspeaker for example. The shell 1 refers to the shell part of the loudspeaker, the magnetic circuit system 2 refers to the part for providing a magnetic circuit, which is generally composed of a center magnetic circuit 21 and a side magnetic circuit 22, for providing a magnetic field; the vibration system 3 refers to the part for vibrating the sound production, and the vibration system 3 generally includes a voice coil 31 and a diaphragm 32 connected to the voice coil 31, and the voice coil 31 is disposed in the gap between the center magnetic circuit 21 and the side magnetic circuit 22, and can reciprocate under the action of the magnetic field, and the voice coil 31 vibrates to drive the diaphragm 32 to vibrate to produce sound. The end of the side sub-magnet 221 in the present application refers to the end of the side sub-magnet 221 along the length direction and away from the center magnet 211, and the number of the end is generally two. Generally, the number of the side sub-magnet 221 is four, and at least one side sub-magnet 221 can be any one of the side sub-magnets 221, or any two of the side sub-magnets 221, or any three of the side sub-magnets 221, or of course all four side sub-magnets 221 are provided with the flow guide surface 22131. Of course, those skilled in the art can understand that for different types of loudspeakers, the number of side sub-magnets 221 can be different, and the present application does not specifically limit the number of side sub-magnets 221. Generally, due to the vibration of the diaphragm 32, the sound signal emitted from the loudspeaker cavity 12 will flow out of the loudspeaker through the airflow passage 6, and the shell 1 is also provided with a communication passage to facilitate the airflow to flow out, and the present application provides the flow guide surface 22131 on at least one side of the side sub-magnet 221 facing the airflow passage 6, and specifically provides the flow guide surface 22131 on one or both ends of the side sub-magnet 221, so that the cross-sectional area of the airflow passage 6 from the inside to the outside of the sound production unit 10 has a trend of increasing, which can effectively increase the effective opening area of the back cavity, reduce the air flow rate, and improve the sound quality. It should be noted that the trend of increasing here not only includes gradually increasing cross-sectional area, but also includes various situations such as first constant then increasing, or first increasing then constant, or first constant then increasing and then constant, or first increasing then constant and then increasing, etc. Those skilled in the art can understand that as long as the cross-sectional area has a trend of increasing from the inside to the outside of the sound production unit 10, the embodiments are within the scope of the present application.

[0056] Reference Figure 4In some embodiments, the side sub-magnets 221 include two first side sub-magnets distributed on opposite sides of the center magnetic circuit 21 along a first direction, and two second side sub-magnets distributed on opposite sides of the center magnetic circuit 21 along a second direction, the first direction being perpendicular to the second direction; at least one of the first side sub-magnets is provided with a flow guide surface 22131; and / or, at least one of the second side sub-magnets is provided with a flow guide surface 22131.

[0057] The first direction in the present application can be the length direction of the sound emitting unit 10, as shown by arrow X in Figure 4 The second direction can be the width direction of the sound emitting unit 10, as shown by arrow Y in Figure 4 Of course, the first direction can also be the width direction of the sound emitting unit 10, as shown by arrow Y in Figure 4 The second direction is then the length direction of the sound emitting unit 10, as shown by arrow X in Figure 4 The first direction is perpendicular to the second direction, and the third direction can be the thickness direction of the sound emitting unit 10, which can also be referred to as the height direction, vertical direction or up-down direction, as shown by arrow Z in Figure 2 or Figure 3 The two side sub-magnets 221 arranged along the first direction can be named as first side sub-magnets, and the two side sub-magnets 221 arranged along the second direction can be named as second side sub-magnets. Among the two first side sub-magnets and the two second side sub-magnets, at least one is provided with a flow guide surface 22131. The provision of the flow guide surface 22131 can increase the cross-sectional area of the air flow channel 6, which is equivalent to increasing the effective opening area of the back cavity, and is beneficial to reducing the air flow rate and improving the sound quality.

[0058] Referring to Figure 4 In some embodiments, the length of the side sub-magnet 221 with the flow guide surface 22131 is less than the length of the center magnetic circuit 21. The center magnetic circuit 21 here can include a center magnet 211. The length of the side sub-magnet 221 is less than the length of the center magnet 211. Designing the length of the side sub-magnet 221 to be small can facilitate the formation of the air flow channel 6 and facilitate the flow of sound signals from the back cavity.

[0059] Referring to Figure 5 and Figure 6 In some embodiments, at least one side sub-magnet 221 has an inner side surface 2211 facing the center magnetic circuit 21, an outer side surface 2212 arranged opposite to the inner side surface 2211, and two side surfaces 2213 respectively connecting the inner side surface and the outer side surface, the length of the inner side surface 2211 is greater than the length of the outer side surface 2212, at least one side surface 2213 is formed with a flow guide surface 22131, and the length of the side sub-magnet 221 with the flow guide surface 22131 decreases in the direction from the inner side surface 2211 to the outer side surface 2212.

[0060] Referring toFigure 5 , Figure 5 The length of the inner side surface 2211 is greater than the length of the outer side surface 2212, and the flow guide surface 22131 is arranged on the edge side surface 2213, so that the length of the edge sub-magnet 221 arranged from the inner side surface 2211 to the outer side surface 2212, or from the inside of the sound emitting unit 10 to the outside, is in a decreasing trend, and the cross-sectional area of the corresponding air flow channel 6 is in an increasing trend, which is beneficial to reduce the air flow rate and improve the sound quality. It should be noted that the length of the edge sub-magnet 221 here is not the same as the length direction in the foregoing, and the length here refers to the length of the edge sub-magnet 221 in the XY plane, that is, the plane formed by the first direction and the second direction, and the length is perpendicular to the line connecting the center of the sound emitting unit 10 to the center of the edge sub-magnet 221. It can also be considered as the length of the long side of the edge sub-magnet 221.

[0061] Referring to Figure 5 In some embodiments, the inner side surface 2211 and the outer side surface 2212 are arranged in parallel, the line connecting the center of the inner side surface 2211 and the center of the outer side surface 2212 is defined as the symmetry axis, and each edge side surface 2213 is provided with a flow guide surface 22131, and the two flow guide surfaces 22131 are arranged in axial symmetry about the symmetry axis.

[0062] The parallel arrangement of the inner side surface 2211 and the outer side surface 2212 means that for the same edge sub-magnet 221, the inner side surface 2211 and the outer side surface 2212 can be arranged in the first direction or in the second direction. In this embodiment, the flow guide surface 22131 is arranged on each edge side surface 2213, and the two flow guide surfaces 22131 are arranged in symmetry about the symmetry axis, so that the air flow channels 6 on both sides of the edge sub-magnet 221 are the same. Here, the same refers to the same cross-sectional area at the corresponding position, so that the air flow can uniformly flow out of each air flow channel 6, ensuring the uniformity of sound emission.

[0063] Regarding the specific form of each edge side surface 2213, at least the following embodiments are included:

[0064] Referring to Figure 6 In some embodiments, each edge side surface 2213 comprises a straight surface 22132 and an inclined surface 22133 connected to each other, the straight surface 22132 is connected to the inner side surface 2211 away from the inclined surface 22133, and the inclined surface 22133 is connected to the outer side surface 2212 away from the straight surface 22132, and the inclined surface 22133 is the flow guiding surface 22131.

[0065] Here, the straight surface 22132 refers to a surface extending along the first direction or the second direction, and the cross-sectional area of the airflow passage 6 has little change at the position of the straight surface 22132. Specifically, if the edge sub-magnet 221 provided with the flow guiding surface 22131 is distributed on both sides of the center magnetic circuit 21 along the first direction, the straight surface 22132 also extends along the first direction. If the edge sub-magnet 221 provided with the flow guiding surface 22131 is distributed on both sides of the center magnetic circuit 21 along the second direction, the straight surface 22132 also extends along the second direction. The inclined surface 22133 refers to a surface arranged relatively inclined, that is, the flow guiding surface 22131 in the present embodiment, and the inclination here means neither parallel nor perpendicular to the first direction or the second direction. Since the flow guiding surface 22131 is arranged facing the airflow passage 6, the cross-sectional area of the airflow passage 6 corresponding to the flow guiding surface 22131 gradually increases in the direction from the inside to the outside of the sound generating body, so that the cross-sectional area of the airflow passage 6 has an increasing trend. It should be noted that the inclined surface 22133 here can be a straight inclined surface or an inclined arc surface.

[0066] Referring to Figure 6 In some embodiments, each edge side surface 2213 comprises a straight surface 22132 and a curved surface 22134 connected to each other, the straight surface 22132 is connected to the inner side surface 2211 away from the curved surface 22134, and the curved surface 22134 is connected to the outer side surface 2212 away from the straight surface 22132, and the curved surface 22134 is the flow guiding surface 22131.

[0067] Similar to the previous embodiment, the straight surface 22132 here refers to a surface extending along the first or second direction. At the position of the straight surface 22132, the cross-sectional area of ​​the airflow channel 6 remains almost unchanged. Specifically, if the lateral magnets 221 with the drainage surface 22131 are distributed along the first direction on both sides of the central magnetic circuit 21, then the straight surface 22132 also extends along the first direction. If the lateral magnets 221 with the drainage surface 22131 are distributed along the second direction on both sides of the central magnetic circuit 21, then the straight surface 22132 also extends along the second direction. The curved surface 22134, which is the drainage surface 22131 in this embodiment, can be curved, with a curved cross-sectional shape. The curved surface 22134 faces the airflow channel 6. The fluctuation of the curved surface 22134 allows the cross-sectional area of ​​the airflow channel 6 corresponding to the drainage surface 22131 to gradually increase from the inside to the outside of the sound-emitting body, thus causing the cross-sectional area of ​​the airflow channel 6 to show an increasing trend.

[0068] Reference Figure 7 In some embodiments, each side surface 2213 includes a slope 22133, the two sides of which are connected to the inner side surface 2211 and the outer side surface 2212 respectively, and the slope 22133 is a drainage surface 22131.

[0069] In this embodiment, the side surface 2213 is an inclined surface 22133, and the drainage surface 22131 is also an inclined surface 22133, meaning the entire side surface 2213 is an inclined surface 22133. An inclined surface 22133 refers to a surface that is relatively inclined. This inclination can mean that it is neither parallel nor perpendicular to the first or second direction. Since the drainage surface 22131 faces the airflow channel 6, the cross-sectional area of ​​the airflow channel 6 corresponding to the drainage surface 22131 gradually increases from the inside of the sound-emitting body to the outside, thus causing the cross-sectional area of ​​the airflow channel 6 to gradually increase.

[0070] Reference Figure 7 (d) and Figure 8 In some embodiments, each side surface 2213 includes a curved surface 22134, the two sides of which are connected to the inner side surface 2211 and the outer side surface 2212 respectively, and the curved surface 22134 is a drainage surface 22131.

[0071] In this embodiment, the side surface 2213 is a curved surface 22134, and the drainage surface 22131 is also a curved surface 22134, meaning the entire side surface 2213 is a curved surface 22134. The curved surface 22134 can be a curved arc surface with a cross-sectional shape of... Figure 7 The curve shown in (d) can also be a undulating surface 22134, with a cross-sectional shape of... Figure 8The curved surface 22134 is arranged to face the airflow passage 6, and the fluctuation of the curved surface 22134 can make the cross-sectional area of the airflow passage 6 corresponding to the flow guide surface 22131 gradually increase from the inside to the outside of the sound generating body.

[0072] With reference to Figure 8 In some embodiments, as shown in (f), each side surface 2213 comprises a bevel surface 22133 and a curved surface 22134 connected with each other, and the flow guide surface 22131 comprises the bevel surface 22133 and the curved surface 22134; the side of the bevel surface 22133 away from the curved surface 22134 is connected with the inner side surface 2211, and the side of the curved surface 22134 away from the bevel surface 22133 is connected with the outer side surface 2212; or, each side surface 2213 comprises a bevel surface 22133 and a curved surface 22134 connected with each other, and the flow guide surface 22131 comprises the bevel surface 22133 and the curved surface 22134; the side of the curved surface 22134 away from the bevel surface 22133 is connected with the inner side surface 2211, and the side of the bevel surface 22133 away from the curved surface 22134 is connected with the outer side surface 2212.

[0073] In this embodiment, the side surface 2213 can be composed of the bevel surface 22133 and the curved surface 22134 connected with each other, and the curved surface 22134 is arranged to face the airflow passage 6, and the fluctuation of the curved surface 22134 can make the cross-sectional area of the airflow passage 6 corresponding to the flow guide surface 22131 gradually increase from the inside to the outside of the sound generating body. Similarly, by arranging the bevel surface 22133, the cross-sectional area of the airflow passage 6 corresponding to the flow guide surface 22131 gradually increases by controlling the inclination direction, so that the cross-sectional area of the airflow passage 6 also gradually increases. As for the specific connection relationship between the curved surface 22134 and the bevel surface 22133, the side of the bevel surface 22133 away from the curved surface 22134 can be connected with the inner side surface 2211, and the side of the curved surface 22134 away from the bevel surface 22133 can be connected with the outer side surface 2212; or, the side of the curved surface 22134 away from the bevel surface 22133 can be connected with the inner side surface 2211, and the side of the bevel surface 22133 away from the curved surface 22134 can be connected with the outer side surface 2212.

[0074] In some embodiments, each side surface 2213 can further comprise a combination of the bevel surface 22133, the curved surface 22134 and the straight surface 22132, and the number of any one of the bevel surface 22133, the curved surface 22134 and the straight surface 22132 is not limited to one. Those skilled in the art can understand that any implementation adopting the combination of the above embodiments is within the scope of the present application.

[0075] With reference to Figure 9In some embodiments, the magnetic circuit system 2 comprises a magnetic yoke 23, the magnetic yoke 23 comprises a rectangular central part 231, opposite sides of the central part 231 are connected with side walls 232 extending in the same direction by bending, and the side walls 232 are reversely bent to form bending parts 233 away from the central part 231, the central magnetic circuit 21 is fixed to the central part 231 and spaced from the side walls 232 to form a first magnetic gap 4, and part of the plurality of side sub-magnets 221 are fixed to the bending parts 233 and spaced from the side walls 232 to form a second magnetic gap 5, and the magnetic yoke 23 is provided with an opening 2321 corresponding to the air flow channel 6 and communicating with the air flow channel 6.

[0076] Specifically, the side walls 232 extend vertically upward from the opposite sides of the central part 231, and the bending parts 233 extend outward from one side of the side walls 232 away from the central part 231 to form the bending parts 233. When the number of the bending parts 233 is two, the two side sub-magnets 221 are arranged on the bending parts 233, and the magnetic yoke 23 further comprises an outer frame 234, the bending parts are connected with the outer frame 234, and the outer frame 234 is further provided with a mounting plate, and the other two side sub-magnets 221 are arranged on the mounting plate. The magnetic yoke 23 forms a recessed groove, the central magnetic circuit 21 is arranged on the central part 231 and spaced from the side walls 232 to form the first magnetic gap 4, the side magnetic circuit 22 is arranged between the side walls 232 to form the second magnetic gap 5, and when the number of the voice coils 31 is two, one voice coil 31 extends into the first magnetic gap 4, and the other voice coil 31 extends into the second magnetic gap 5. At the same time, in order to facilitate the outflow of the air flow or the sound pressure signal, the opening 2321 can be arranged on the magnetic yoke 23 corresponding to the air flow channel 6, so that the accommodating cavity 12 communicates with the air flow channel 6 through the opening 2321. The magnetic yoke 23 not only can increase the magnetic field strength and provide installation support for the central magnetic circuit 21 and the side magnetic circuit 22, but also can form the first magnetic gap 4 and the second magnetic gap 5 with the central magnetic circuit 21 and the side magnetic circuit 22 respectively, so as to facilitate the vibration of the two voice coils 31 at the same time.

[0077] Referring to Figure 9 and Figure 11 In some embodiments, the outer frame 234 is provided with a first gap 2331, and the first gap 2331 communicates with the accommodating cavity 12, that is, communicates the accommodating cavity 12 with the atmosphere. The number of the first gap 2331 here can be one or multiple, and one or more first gaps 2331 can be arranged on one side of one outer frame 234, or first gaps 2331 can be arranged on each side of multiple outer frames 234. The side sub-magnets 221 are arranged on the bending parts 233, and the first gap 2331 communicates with the accommodating cavity 12, so that the air flow of the accommodating cavity 12 can also flow out from the first gap 2331, which is equivalent to further increasing the opening area of the rear cavity, reducing the air flow rate, and improving the sound quality.

[0078] Referring to Figure 10 and Figure 11 In some embodiments, the edge magnetic circuit 22 further comprises an edge magnetic conducting plate 223, which is arranged on the side of the edge sub-magnet 221 away from the bending part 233, and the edge magnetic conducting plate 223 is provided with a second gap 2231, which is in communication with the accommodating cavity 12, or in communication with the accommodating cavity 12 and the atmospheric environment. The edge magnetic conducting plate 223 is provided with the second gap 2231, which is in communication with the accommodating cavity 12, so that the air flow of the accommodating cavity 12 can also flow out from the second gap 2231, which is equivalent to further increasing the opening area of the rear cavity, reducing the air flow rate, and improving the sound quality. The number of second gaps 2231 here can be one or more, one or more second gaps 2231 can be arranged on one side of the edge magnetic conducting plate 223, or second gaps 2231 can be arranged on multiple sides. The first gap 2331 and the second gap 2231 can be arranged in alignment in the height direction, or can be arranged in staggered positions according to actual needs.

[0079] Referring to Figure 9 and Figure 11 In some embodiments, a third gap 235 can also be arranged on the outer frame 234, the third gap 235 is arranged on the opposite sides of the outer frame 234 along the second direction, the first gap 2331 is arranged on the opposite sides of the outer frame 234 along the first direction, and the third gap 235 is in communication with the accommodating cavity 12, so that the air flow of the accommodating cavity 12 can also flow out from the third gap 235, which is equivalent to further increasing the opening area of the rear cavity, reducing the air flow rate, and improving the sound quality. In addition, the center magnetic circuit 21 further comprises a center magnetic conducting plate 212, which is arranged on the side of the center magnet 211 away from the center part 231. The magnetic conducting plate (including the center magnetic conducting plate 212 and the edge magnetic conducting plate 223) is usually made of ferromagnetic material, which can effectively guide and enhance the magnetic field generated by the magnetic circuit; and the magnetic conducting plate as a part of the magnetic circuit can reduce the leakage of the magnetic field, so that more magnetic lines pass through the voice coil 31, improving the energy utilization efficiency; furthermore, the magnetic conducting plate can concentrate the magnetic field, reduce the distortion caused by improper design of the magnetic circuit, and improve the sound quality of the loudspeaker.

[0080] In some embodiments, the center part 231 is provided with a through hole 2311 in the center region, and the center magnetic circuit 21 comprises a ring-shaped center magnet 211, which is arranged around the periphery of the through hole 2311. The center magnet 211 is also provided with a through hole, which can be coaxially arranged with the through hole 2311, and the size of the through hole is larger than that of the through hole 2311. The center magnet 211 is designed as a ring-shaped magnet, which can reduce the weight and facilitate the formation of a magnetic field with the four edge sub-magnets 221 around the periphery.

[0081] Referring to Figure 12 andFigure 13 In some embodiments, the number of vibration systems 3 is two, two diaphragms 32 are respectively arranged on two sides of the shell 1 along the thickness direction, and two voice coils 31 are respectively connected to the two diaphragms 32 in one-to-one correspondence. One of the voice coils 31 is arranged corresponding to the first magnetic gap 4, and the other voice coil 31 is arranged corresponding to the second magnetic gap 5. In this embodiment, the sound emitting unit 10 is a double-sided sound emitting sound emitting unit 10 having two diaphragms 32. The two diaphragms 32 are arranged on the two sides of the shell 1 along the thickness direction of the shell 1. The thickness direction of the present application is also the vertical direction or the up-down direction, or the height direction, as shown by the arrow Z in the middle. Figure 2 The number of voice coils 31 is two, and the two voice coils 31 are respectively connected to the two diaphragms 32 in one-to-one correspondence. One of the voice coils 31 is arranged corresponding to the first magnetic gap 4, and the other voice coil 31 is arranged corresponding to the second magnetic gap 5. In this embodiment, the sound emitting unit 10 is a double-sided sound emitting sound emitting unit 10 having two diaphragms 32. The two diaphragms 32 are arranged on the two sides of the shell 1 along the thickness direction of the shell 1. The thickness direction of the present application is also the vertical direction or the up-down direction, or the height direction, as shown by the arrow Z in the middle.

[0082] According to some embodiments of the present application, the present application provides a kind of intelligent wearable device, and intelligent wearable device includes the sound emitting unit 10 described above. The intelligent wearable setting here can be smart glasses, such as virtual reality glasses, augmented reality glasses or mixed reality glasses, but also watch, ring, bracelet etc., of course, it can also be tablet, laptop or IPAD. Since the intelligent wearable device includes all the technical solutions of all the embodiments described above, it at least has all the beneficial effects brought by all the technical solutions described above, which will not be repeated here.

[0083] In some embodiments, the intelligent wearable device is smart glasses, the smart glasses include a frame and a leg 20 arranged on both sides of the frame, the leg 20 is provided with a containing space 201 and a main sound emitting hole 202 and at least one secondary sound emitting hole 203 in communication with the containing space 201, the sound emitting unit 10 is arranged in the containing space 201, the diaphragm 32 and the main sound emitting hole 202 are provided with a main sound outlet channel 204, the number of airflow channels 6 is equal to the number of secondary sound emitting holes 203 and is arranged in one-to-one correspondence, and the airflow channel 6 and the corresponding secondary sound emitting hole 203 are provided with a secondary sound outlet channel 205.

[0084] The smart glasses can be virtual reality glasses, augmented reality glasses or mixed reality glasses. The main sound emitting hole 202 and the secondary sound emitting hole 203 are arranged on the shell of the leg 20, the shell is formed with the containing space 201, and the containing space 201 is in communication with the airflow channel 6 through the communication channel on the shell, so that the airflow in the containing cavity 12 can be emitted from the secondary sound emitting hole 203 through the airflow channel 6, the communication channel and the secondary sound outlet channel 205.

[0085] Specifically, refer to Figure 14 and Figure 15The main sound-emitting hole 202 is generally located near the frame. When the smart glasses are worn on the brain, the main sound-emitting hole 202 is positioned near the ear. A main sound-emitting channel 204 is also formed within the accommodating space 201 between the diaphragm 32 and the main sound-emitting hole 202. The sound emitted by the vibration of the diaphragm 32 is emitted from the main sound-emitting hole 202 through the main sound-emitting channel 204, allowing the human ear to receive the sound signal and achieve sound pickup. In a further embodiment, for a sound-emitting unit 10 with a double-sided diaphragm 32, the sound emitted by both diaphragms 32 is emitted from the main sound-emitting hole 202 through the main sound-emitting channel 204, with the sound path as follows: Figure 15 As shown in Figure D, an airflow channel 6 connects to a corresponding secondary sound outlet channel 205 and a corresponding secondary sound outlet 203, and the three can be designed in a one-to-one correspondence. Specifically, the secondary sound outlet 203 can be positioned on the side of the main sound outlet 202 away from the frame, thus reducing the impact of the sound signal emitted by the secondary sound outlet 203 on the user's normal sound pickup. For a person next to the wearer, since the sound waves radiated outward from the rear acoustic cavity are emitted from the secondary sound outlet 203, and the sound waves radiated outward from the front acoustic cavity are emitted from the main sound outlet 202, the two sound waves are out of phase and can cancel each other out, making it difficult for the person next to the wearer to receive the sound. This can protect the user's privacy and reduce the risk of information leakage.

[0086] In some embodiments, there are two airflow channels 6 and two auxiliary sound-emitting holes 203, with the two auxiliary sound-emitting holes 203 respectively disposed on the upper and lower sides of the temple. The two auxiliary sound-emitting holes 203 are respectively disposed on the upper and lower sides of the temple 20, and the number of airflow channels 6 is two, with each airflow channel 6 corresponding to one of the two auxiliary sound-emitting holes 203.

[0087] Reference Figure 16 The sound-emitting unit 10 is provided with two airflow channels 6, each airflow channel 6 corresponding to a secondary sound-emitting hole 203. Depending on the placement direction of the sound-emitting unit 10, the two secondary sound-emitting holes 203 can be respectively set on the upper and lower sides of the temple 20. The secondary sound-emitting holes 203 are spaced apart from the main sound-emitting hole 202. A secondary sound-emitting channel 205 connecting the airflow channels 6 and the secondary sound-emitting holes 203 is also formed in the accommodating space 201. The sound output path is as follows: Figure 16 As shown in Figure E, by radiating sound waves with opposite phase to the main sound-emitting hole 202 from the upper and lower sides of the temple, it can better prevent sound leakage and protect user privacy.

[0088] The above are merely exemplary embodiments of the present invention and do not limit the scope of the patent of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A sound producing monomer, characterized in that, The application relates to a loudspeaker, which comprises: a shell, which is internally formed with a containing cavity; a magnetic circuit system, which is located in the containing cavity and comprises a center magnetic circuit and a side magnetic circuit, the side magnetic circuit comprises a plurality of side sub-magnets arranged around the periphery of the center magnetic circuit, the end of each side sub-magnet is formed with an air flow channel between the end and the inner wall surface of the shell, the shell is provided with a communication channel which is in communication with the air flow channel, and at least one side of the side sub-magnet which faces the air flow channel is provided with a flow guide surface, so that the cross-sectional area of the corresponding air flow channel presents an increasing trend from the inside to the outside of the sound emitting unit; a vibration system, which comprises a voice coil and a diaphragm connected with the voice coil, the center magnetic circuit and the side magnetic circuit are spaced apart and formed with a gap, and the voice coil is at least partially arranged in the gap; the magnetic circuit system comprises a magnetic yoke, the magnetic yoke comprises a rectangular center part, opposite two side edges of the center part are connected with side walls which are extended in the same direction by bending, and the side walls are reversely bent and extended from one end which is away from the center part, the center magnetic circuit is fixed to the center part and is spaced apart from the side walls to form a first magnetic gap, and part of the plurality of side sub-magnets are fixed to the bent part and are spaced apart from the side walls to form a second magnetic gap, and the magnetic yoke is provided with an opening which is in communication with the air flow channel at the position corresponding to the air flow channel.

2. The sound producing monomer of claim 1, wherein, the side sub-magnets comprise two first side sub-magnets which are distributed on the opposite two sides of the center magnetic circuit along a first direction, and two second side sub-magnets which are distributed on the opposite two sides of the center magnetic circuit along a second direction, and the first direction is perpendicular to the second direction; at least one of the first side sub-magnets is provided with the flow guide surface; and / or at least one of the second side sub-magnets is provided with the flow guide surface.

3. The sound producing monomer of claim 1, wherein, at least one of the side sub-magnets has an inner side surface which faces the center magnetic circuit, an outer side surface which is arranged opposite to the inner side surface, and two side surfaces which respectively connect the inner side surface and the outer side surface, the length of the inner side surface is greater than the length of the outer side surface, at least one of the side surfaces is formed with the flow guide surface, and the length of the side sub-magnet with the flow guide surface presents a decreasing trend from the inner side surface to the outer side surface.

4. The sound producing monomer of claim 3, wherein, each of the side surfaces comprises a straight surface and an inclined surface which are connected with each other, the side of the straight surface which is away from the inclined surface is connected with the inner side surface, the side of the inclined surface which is away from the straight surface is connected with the outer side surface, and the inclined surface is the flow guide surface; or each of the side surfaces comprises a straight surface and a curved surface which are connected with each other, the side of the straight surface which is away from the curved surface is connected with the inner side surface, the side of the curved surface which is away from the straight surface is connected with the outer side surface, and the curved surface is the flow guide surface.

5. The sound producing monomer of claim 3, wherein, each of the side surfaces comprises an inclined surface, and the two sides of the inclined surface are respectively connected with the inner side surface and the outer side surface, and the inclined surface is the flow guide surface; or each of the side surfaces comprises a curved surface, and the two sides of the curved surface are respectively connected with the inner side surface and the outer side surface, and the curved surface is the flow guide surface.

6. The sound producing monomer of claim 3, wherein, each of the side surfaces comprises an inclined surface and a curved surface which are connected with each other, and the flow guide surface comprises the inclined surface and the curved surface. The side of the bevel away from the curved surface is connected with the inner side surface, and the side of the curved surface away from the bevel is connected with the outer side surface; or, The side of the bevel away from the curved surface is connected with the inner side surface, and the side of the curved surface away from the bevel is connected with the outer side surface; or, 7. A sound producing monomer according to any one of claims 3 to 6, wherein The inner side surface and the outer side surface are arranged in parallel, a connecting line connecting the center of the inner side surface and the center of the outer side surface is defined as a symmetry axis, each of the edge side surfaces is provided with the drainage surface, and the two drainage surfaces are arranged in axial symmetry with respect to the symmetry axis.

8. A sound producing monomer according to any one of claims 3 to 6, wherein, The length of the edge sub-magnet provided with the drainage surface is less than the length of the center magnetic circuit.

9. The sound producing monomer of claim 1, wherein, The center region of the center portion is provided with a through hole, and the center magnetic circuit comprises a ring-shaped center magnet arranged around the periphery of the through hole.

10. The sound producing monomer of any one of claims 1 to 6, wherein, The number of the vibration systems is two, two of the diaphragms are arranged on two sides of the shell along the thickness direction, and two of the voice coils are connected with the two diaphragms one by one, one of the voice coils is arranged corresponding to the first magnetic gap, and the other voice coil is arranged corresponding to the second magnetic gap.

11. A smart wearable device, characterized by, The smart wearable device comprises the sound production monomer of any one of claims 1 to 10.

12. The smart wearable device of claim 11, wherein, The smart wearable device is smart glasses, the smart glasses comprise a frame and a temple arranged on each side of the frame, the temple is provided with an accommodation space, a main sound production hole and at least one auxiliary sound production hole in communication with the accommodation space, the sound production monomer is arranged in the accommodation space, a main sound outlet channel is arranged between the diaphragm and the main sound production hole, the number of the airflow channels is equal to the number of the auxiliary sound production holes and is arranged one by one in correspondence, and a secondary sound outlet channel is arranged between the airflow channel and the corresponding auxiliary sound production hole.

13. The smart wearable device of claim 12, wherein, The number of the airflow channels and the number of the auxiliary sound production holes are both two, and the two auxiliary sound production holes are arranged on the upper side and the lower side of the temple respectively. The number of the airflow channels and the number of the auxiliary sound production holes are both two, and the two auxiliary sound production holes are arranged on the upper side and the lower side of the temple respectively.

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