Bone conduction embedded horn and electronic device

Abstract

The application provides a bone conduction embedded loudspeaker and an electronic device. The bone conduction embedded loudspeaker comprises a shell, a bone conduction loudspeaker fixedly connected to the shell and internally forming an accommodating cavity, and an air conduction loudspeaker fixedly connected to the shell and arranged inside the accommodating cavity. Since the sound produced by the diaphragm of the air conduction loudspeaker is transmitted through air, the diaphragm can be made of a material with weak rigidity and balanced vibration, so that the air conduction loudspeaker can produce sound in a specific frequency range that cannot be produced by the bone conduction loudspeaker, overcoming the problem of narrow frequency range caused by the bone conduction loudspeaker alone. Furthermore, the sound produced by the air conduction loudspeaker can modify the sound produced by the bone conduction loudspeaker, so as to improve the sound quality of the overall structure.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of loudspeakers, and more particularly relates to a bone conduction embedded loudspeaker and an electronic device. BACKGROUND

[0002] Bone conduction refers to the response of the head skull to audio and high-frequency vibration, the transmission and reception process of an audio signal through an auditory organ. A bone conduction earphone uses the skull and the jawbone as a medium for sound transmission, and directly transmits information to the middle ear. The bone conduction earphone uses a bone conduction vibration diaphragm to conduct sound. However, the bone conduction vibration diaphragm has the disadvantages of strong rigidity and unbalanced vibration, and thus the existing bone conduction earphones generally have the problems of narrow frequency domain, poor sound quality, and poor experience. SUMMARY

[0003] The purpose of the embodiment of the application is to provide a bone conduction embedded loudspeaker and an electronic device, so as to solve the technical problems of narrow frequency domain, poor sound quality, and poor experience of the existing bone conduction embedded loudspeaker.

[0004] To achieve the above purpose, the technical scheme adopted by the application is as follows:

[0005] The application provides a bone conduction embedded loudspeaker, which comprises a shell, a bone conduction loudspeaker fixedly connected to the shell and internally forming an accommodating cavity, and an air conduction loudspeaker fixedly connected to the shell and arranged inside the accommodating cavity.

[0006] In one embodiment, the air conduction loudspeaker comprises a first diaphragm fixedly connected to one end of the shell, a first magnetic assembly for forming a first magnetic circuit, a first voice coil at least partially arranged in the first magnetic circuit and used for driving the first diaphragm to vibrate in a state of being electrified, and a first magnetic assembly fixedly connected to the shell and the first voice coil fixedly connected to the other end of the first diaphragm, or the first voice coil fixedly connected to the shell and the first magnetic assembly fixedly connected to the other end of the first diaphragm.

[0007] In one embodiment, the first magnetic assembly comprises a first magnet arranged in a cylindrical shape and internally forming a first cavity, and a first soft magnetic member arranged in the first cavity, and the first magnet and the first soft magnetic member jointly form the first magnetic circuit.

[0008] In one embodiment, the bone conduction speaker comprises: a second vibrating plate, one end of which is fixedly connected to the shell; a second magnetic assembly for forming a second magnetic circuit; and a second voice coil, at least partially disposed in the second magnetic circuit, for driving the second vibrating plate to vibrate in a state of being electrified; the second magnetic assembly is fixedly connected to the shell, and the second voice coil is fixedly connected to the other end of the second vibrating plate; or, the second voice coil is fixedly connected to the shell, and the second magnetic assembly is fixedly connected to the other end of the second vibrating plate.

[0009] In one embodiment, the second magnetic assembly comprises: a second magnet, disposed in a cylindrical shape, and forming a second cavity inside; and a second soft magnetic piece, disposed in the second cavity, the second magnet and the second soft magnetic piece together forming the second magnetic circuit.

[0010] In one embodiment, the second magnetic assembly comprises: a second magnet, disposed in a cylindrical shape, and forming a second cavity inside; and a first magnet, disposed in the second cavity, the first magnet and the second magnet together forming the second magnetic circuit.

[0011] In one embodiment, the second magnetic assembly comprises: a second soft magnetic piece, disposed in a cylindrical shape, and forming a third cavity inside; and a first magnet, disposed in the third cavity, the first magnet and the second soft magnetic piece together forming the second magnetic circuit.

[0012] In one embodiment, the first vibrating plate and the second vibrating plate are disposed on the same side of the first magnet.

[0013] Also provided is an electronic device comprising the above-mentioned bone conduction embedded speaker.

[0014] The bone conduction embedded speaker and the electronic device provided by the present application have the following advantages: the bone conduction embedded speaker comprises a shell, a bone conduction speaker and an air conduction speaker, the bone conduction speaker is fixedly connected to the shell, and the shell can provide fixation for the position of the bone conduction speaker; the bone conduction speaker forms an accommodating cavity inside; the air conduction speaker is fixedly connected to the shell, and the shell can provide fixation for the position of the air conduction speaker; the air conduction speaker is disposed inside the accommodating cavity, and the air conduction speaker is integrated in the accommodating cavity formed by the bone conduction speaker. Since the sound generated by the vibrating plate used by the air conduction speaker is conducted through air, the vibrating plate can be made of a material with weak rigidity and balanced vibration, so that the air conduction speaker can generate sound in a specific frequency range that the bone conduction speaker cannot generate, overcoming the problem of narrow frequency range caused by using only the bone conduction speaker to generate sound; and the sound generated by the air conduction speaker can modify the sound generated by the bone conduction speaker to improve the sound quality of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 illustrate some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0016] Figure 1 The structure diagram of the first bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0017] Figure 2 The cross-sectional view of the first bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0018] Figure 3 The structure diagram of the second bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0019] Figure 4 The cross-sectional view of the second bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0020] Figure 5 The structure diagram of the third bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0021] Figure 6 The cross-sectional view of the third bone conduction embedded horn provided by the embodiments of the present application is shown in the figure.

[0022] In the figures, various reference signs represent:

[0023] 100, bone conduction embedded horn; 110, shell; 120, bone conduction horn; 130, air conduction horn; 140, first diaphragm; 150, first magnetic assembly; 151, first magnet; 152, first soft magnetic member; 160, first voice coil; 170, second diaphragm; 180, second magnetic assembly; 181, second magnet; 182, second soft magnetic member; 190, second voice coil. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0028] Now the bone conduction embedded loudspeaker and electronic device provided by the embodiments of the present application are described.

[0029] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the embodiments of the present application provide a bone conduction embedded loudspeaker 100, which comprises a shell 110, a bone conduction loudspeaker 120 and an air conduction loudspeaker 130.

[0030] The shell 110 is used to provide support for the positions of the bone conduction loudspeaker 120 and the air conduction loudspeaker 130. Specifically, the shell 110 can be provided in a cylindrical shape, and the inside of the cylindrical shell 110 is used to accommodate and fix the bone conduction loudspeaker 120 and the air conduction loudspeaker 130.

[0031] The bone conduction loudspeaker 120 is fixedly connected to the shell 110. Specifically, the bone conduction loudspeaker 120 can be fixedly connected to the shell 110 by welding, bonding and the like, or can be fixedly connected to the shell 110 by screws, buckles and the like. The inside of the bone conduction loudspeaker 120 forms an accommodation cavity. Specifically, the bone conduction loudspeaker 120 can form a through hole or a blind hole, and the accommodation cavity is formed by the hole wall of the through hole or the hole wall of the blind hole.

[0032] The air conduction horn 130 is fixedly connected to the shell 110. Specifically, the air conduction horn 130 can be fixedly connected to the shell 110 by welding, bonding or the like, or can be fixedly connected to the shell 110 by screws, buckles or the like, or can be indirectly fixedly connected to the shell 110 by being fixed to the bone conduction horn 120. The air conduction horn 130 is arranged inside the accommodating cavity. Specifically, a certain gap can be formed between the air conduction horn 130 and the bone conduction horn 120 to ensure that the air conduction horn 130 and the bone conduction horn 120 can work independently and reduce mutual interference.

[0033] The bone conduction embedded horn 100 comprises a shell 110, a bone conduction horn 120 and an air conduction horn 130. The bone conduction horn 120 is fixedly connected to the shell 110, and the shell 110 can provide fixation for the position of the bone conduction horn 120. An accommodating cavity is formed inside the bone conduction horn 120. The air conduction horn 130 is fixedly connected to the shell 110, and the shell 110 can provide fixation for the position of the air conduction horn 130. The air conduction horn 130 is arranged inside the accommodating cavity, and the air conduction horn 130 is integrated into the accommodating cavity formed by the bone conduction horn 120. Since the sound generated by the diaphragm of the air conduction horn 130 is transmitted through air, the diaphragm can be made of a material with weak rigidity and balanced vibration, so that the air conduction horn 130 can generate sound in a specific frequency range that the bone conduction horn 120 cannot generate, overcoming the problem of narrow frequency range caused by using only the bone conduction horn 120 to generate sound. The sound generated by the air conduction horn 130 can modify the sound generated by the bone conduction horn 120 to improve the overall sound quality of the structure.

[0034] In some embodiments of the present application, the air conduction horn 130 can comprise a first diaphragm 140, a first magnetic assembly 150 and a first voice coil 160.

[0035] One end of the first diaphragm 140 is fixedly connected to the shell 110, and the first diaphragm 140 can be an air conduction diaphragm. Specifically, the first diaphragm 140 can be arranged in a circular disc shape, and one end of the first diaphragm 140 can be a portion of the first diaphragm 140 close to the edge position. The first diaphragm 140 can be fixedly connected to the shell 110 by bonding or the like, or can be fixedly connected to the shell 110 by buckles or the like. In order to ensure firm connection and stable vibration of the first diaphragm 140, in the embodiments of the present application, the first diaphragm 140 is fixedly bonded to the shell 110 by an adhesive.

[0036] The first magnetic assembly 150 is used to form a first magnetic loop. The first magnetic assembly 150 can be a combination of a magnet and a magnet, or a combination of a magnet and a soft magnetic structure. Through the above two combinations, a closed magnetic loop can be formed around the magnet.

[0037] The first voice coil 160 is at least partially disposed in the first magnetic loop. The first voice coil 160 generates electromagnetic induction between the energized state and the first magnetic loop, and forms electromagnetic force under the action of electromagnetic induction, which can control the relative motion between the first voice coil 160 and the first magnetic assembly 150.

[0038] Specifically, in the case that the first voice coil 160 remains fixed, i.e., the first voice coil 160 is fixedly connected to the shell 110, the first magnetic assembly 150 can be fixedly connected to the first vibrating plate 140. In this case, energizing the first voice coil 160 will cause the first magnetic assembly 150 to move, and at this time the first vibrating plate 140 can be driven to vibrate by the first magnetic assembly 150. Specifically, the first magnetic assembly 150 is fixedly connected to the other end of the first vibrating plate 140 opposite the one end, and the other end can be a portion of the first vibrating plate 140 close to the center position.

[0039] Specifically, in the case that the first magnetic assembly 150 remains fixed, i.e., the first magnetic assembly 150 is fixedly connected to the shell 110, the first voice coil 160 can be fixedly connected to the first vibrating plate 140. In this case, energizing the first voice coil 160 will cause the first voice coil 160 to move, and at this time the first vibrating plate 140 can be driven to vibrate by the first voice coil 160. Specifically, the first voice coil 160 is fixedly connected to the other end of the first vibrating plate 140 opposite the one end, and the other end can be a portion of the first vibrating plate 140 close to the center position.

[0040] In some embodiments of the present application, the first magnetic assembly 150 can include a first magnet 151 and a first soft magnetic member 152.

[0041] The first magnet 151 is provided in a cylindrical shape, and a first cavity is formed in the inside of the first magnet 151. Specifically, the first cavity can be enclosed by the inner surface of the first magnet 151 in a cylindrical shape.

[0042] The first soft magnetic member 152 is made of soft magnetic material. Specifically, the first soft magnetic member 152 can be a cylindrical structure made of iron. The first soft magnetic member 152 is disposed in the first cavity, and there is a gap between the first soft magnetic member 152 and the first magnet 151. The first soft magnetic member 152 will generate magnetism under the action of the first magnet 151, and the first soft magnetic member 152 and the first magnet 151 can jointly form a first magnetic loop. The first voice coil 160 can be partially or entirely disposed in the gap between the first soft magnetic member 152 and the first magnet 151.

[0043] In some embodiments of the present application, the bone conduction speaker 120 can include a second diaphragm 170, a second magnetic assembly 180, and a second voice coil 190.

[0044] One end of the second diaphragm 170 is fixedly connected to the shell 110, and the second diaphragm 170 can be a bone conduction diaphragm. Specifically, the second diaphragm 170 can be provided in a circular ring shape, and the one end of the second diaphragm 170 can be a portion of the second diaphragm 170 close to the outer ring position. The second diaphragm 170 can be fixedly connected to the shell 110 by adhesion or the like, or can be fixedly connected to the shell 110 by a buckle or the like. In order to ensure the firm connection of the two and to ensure the stable vibration of the second diaphragm 170, in the embodiments of the present application, the second diaphragm 170 is fixedly adhered to the shell 110 by an adhesive.

[0045] The second magnetic assembly 180 is used to form a second magnetic circuit. The second magnetic assembly 180 can be a combination of a magnet and a magnet, or a combination of a magnet and a soft magnetic structure. Through the above two combinations, a closed magnetic circuit can be formed around the magnet.

[0046] The second voice coil 190 is at least partially disposed in the second magnetic circuit. The second voice coil 190 generates electromagnetic induction between the energized state and the second magnetic circuit, and forms electromagnetic force under the action of electromagnetic induction, which can control the relative motion between the second voice coil 190 and the second magnetic assembly 180.

[0047] Specifically, in the case where the second voice coil 190 remains fixed, i.e., the second voice coil 190 is fixedly connected to the shell 110, the second magnetic assembly 180 can be fixedly connected to the second diaphragm 170. In this case, energizing the second voice coil 190 will cause the second magnetic assembly 180 to move, at which time the second magnetic assembly 180 can be used to drive the second diaphragm 170 to vibrate. Specifically, the second magnetic assembly 180 is fixedly connected to the other end of the second diaphragm 170 opposite the one end, which can be a portion of the second diaphragm 170 close to the inner ring position.

[0048] Specifically, in the case where the second magnetic assembly 180 remains fixed, i.e., the second magnetic assembly 180 is fixedly connected to the shell 110, the second voice coil 190 can be fixedly connected to the second diaphragm 170. In this case, energizing the second voice coil 190 will cause the second voice coil 190 to move, at which time the second voice coil 190 can be used to drive the second diaphragm 170 to vibrate. Specifically, the second voice coil 190 is fixedly connected to the other end of the second diaphragm 170 opposite the one end, which can be a portion of the second diaphragm 170 close to the inner ring position.

[0049] As Figure 1 and Figure 2As shown in some embodiments of the present application, the second magnetic assembly 180 can include a second magnet 181 and a second soft magnetic member 182.

[0050] The second magnet 181 is in a cylindrical shape, and a second cavity is formed in the second magnet 181. Specifically, the second cavity can be enclosed by the inner surface of the second magnet 181 in a cylindrical shape.

[0051] The second soft magnetic member 182 is made of a soft magnetic material. Specifically, the second soft magnetic member 182 can be a cylindrical structure made of iron. The second soft magnetic member 182 is arranged in the second cavity, and there is a gap between the second soft magnetic member 182 and the second magnet 181. The second soft magnetic member 182 will generate magnetism under the action of the second magnet 181, and the second soft magnetic member 182 and the second magnet 181 can jointly form a second magnetic circuit. The second voice coil 190 can be partially or entirely arranged in the gap between the second soft magnetic member 182 and the second magnet 181. The second soft magnetic member 182 can be in a cylindrical shape, and an accommodation cavity can be formed in the second soft magnetic member 182 for accommodating the air conduction horn 130.

[0052] As shown in some embodiments of the present application, the second magnetic assembly 180 can include a second magnet 181 and a second soft magnetic member 182. Figure 3 and Figure 4 As shown in some embodiments of the present application, the second magnetic assembly 180 can include a second magnet 181 and a second soft magnetic member 182.

[0053] The second magnet 181 is in a cylindrical shape, and a second cavity is formed in the second magnet 181. Specifically, the second cavity can be enclosed by the inner surface of the second magnet 181 in a cylindrical shape.

[0054] The first magnet 151 is arranged in the second cavity, and there is a gap between the first magnet 151 and the second magnet 181. The second magnet 181 and the first magnet 151 jointly form a second magnetic circuit. That is, the first magnetic assembly 150 and the second magnetic assembly 180 share the same first magnet 151. At this time, the second cavity formed in the second magnet 181 is also the accommodation cavity. Such a design can improve the integration of the overall structure, reduce the volume of the overall structure, and reduce the complexity of the overall structure. The second voice coil 190 can be partially or entirely arranged in the gap between the first magnet 151 and the second magnet 181.

[0055] As shown in some embodiments of the present application, the second magnetic assembly 180 can include a second magnet 181 and a second soft magnetic member 182. Figure 5 and Figure 6 As shown in some embodiments of the present application, the second magnetic assembly 180 can include a second magnet 181 and a second soft magnetic member 182.

[0056] The second soft magnetic member 182 is in a cylindrical shape, and a third cavity is formed in the second soft magnetic member 182. Specifically, the third cavity can be enclosed by the inner surface of the second soft magnetic member 182 in a cylindrical shape.

[0057] The first magnet 151 is arranged in the third cavity, and the first magnet 151 and the second soft magnetic member 182 have a gap therebetween, and the second soft magnetic member 182 and the first magnet 151 jointly form a second magnetic circuit. That is, the first magnetic assembly 150 and the second magnetic assembly 180 share the same first magnet 151, and at this time, the third cavity formed in the second soft magnetic member 182 is the accommodating cavity. Such a design can improve the integration of the overall structure, reduce the volume of the overall structure, and reduce the complexity of the overall structure. The second voice coil 190 can be partially or entirely arranged in the gap between the first magnet 151 and the second soft magnetic member 182.

[0058] In some embodiments of the present application, the first vibrating plate 140 and the second vibrating plate 170 are arranged on the same side of the first magnet 151. In this case, the vibration generated by the first vibrating plate 140 and the vibration generated by the second vibrating plate 170 can propagate toward the side away from the first magnet 151, and in the use state, the side away from the first magnet 151 can be toward the user, so as to ensure that the vibration generated by the first vibrating plate 140 and the second vibrating plate 170 can be clearly received by the user.

[0059] Embodiments of the present application also provide an electronic device, which comprises the bone conduction embedded loudspeaker described above. Specifically, the electronic device can be a video and audio playing device, and the bone conduction embedded loudspeaker can be used to play sound for the electronic device.

[0060] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bone conduction embedded horn, characterized by, The bone conduction embedded speaker comprises: a shell; a bone conduction speaker fixedly connected to the shell and internally forming an accommodating cavity; an air conduction speaker fixedly connected to the shell and arranged inside the accommodating cavity; the rigidity of a diaphragm of the air conduction speaker is weaker than that of a diaphragm of the bone conduction speaker, and a gap is formed between the air conduction speaker and the bone conduction speaker; the air conduction speaker comprises: a first diaphragm having one end fixedly connected to the shell and being used for generating vibration and driving air vibration; a first magnetic assembly used for forming a first magnetic circuit; a first voice coil arranged at least partially in the first magnetic circuit and used for driving the first diaphragm to vibrate in a state of being electrified; the first magnetic assembly is fixedly connected to the shell, and the first voice coil is fixedly connected to the other end of the first diaphragm; or, the first voice coil is fixedly connected to the shell, and the first magnetic assembly is fixedly connected to the other end of the first diaphragm; the first magnetic assembly comprises: a first magnet arranged in a cylindrical shape and internally forming a first cavity; a first soft magnetic member arranged in the first cavity, and the first magnet and the first soft magnetic member jointly forming the first magnetic circuit; the bone conduction speaker comprises: a second diaphragm having one end fixedly connected to the shell and being used for generating vibration and driving bone vibration; a second magnetic assembly used for forming a second magnetic circuit; a second voice coil arranged at least partially in the second magnetic circuit and used for driving the second diaphragm to vibrate in a state of being electrified; the second magnetic assembly is fixedly connected to the shell, and the second voice coil is fixedly connected to the other end of the second diaphragm; or, the second voice coil is fixedly connected to the shell, and the second magnetic assembly is fixedly connected to the other end of the second diaphragm; wherein, the second magnetic assembly comprises: a second magnet arranged in a cylindrical shape and internally forming a second cavity; the first magnet is arranged in the second cavity, and the first magnet and the second magnet jointly form the second magnetic circuit; or, the second magnetic assembly comprises: a second soft magnetic member arranged in a cylindrical shape and internally forming a third cavity; the first magnet is arranged in the third cavity, and the first magnet and the second soft magnetic member jointly form the second magnetic circuit.

2. The bone conduction embedded horn of claim 1, wherein, The first diaphragm and the second diaphragm are arranged on the same side of the first magnet.

3. An electronic device, comprising: The bone conduction embedded speaker comprises the bone conduction speaker according to any one of claims 1-2.

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