A bone conduction speaker

Abstract

The present application discloses a bone conduction speaker, comprising: a housing; a transducer assembly, which is arranged in the housing and is used to generate vibration under the stimulation of an electrical signal; a vibration transmission assembly, which is used to transmit the vibration generated by the transducer assembly to the skin to which it is attached; the vibration transmission assembly comprises a vibration transmission member connected to the transducer assembly and a fitting member arranged on the vibration transmission member for fitting to the skin; the fitting member comprises a central fitting portion fixedly connected to the vibration transmission member and a peripheral fitting portion surrounding the periphery of the central fitting portion and connected to the outer edge of the central fitting portion, the central fitting portion and the peripheral fitting portion fitting to the skin together; the outer surface of the central fitting portion for fitting to the skin is a first surface, the outer surface of the peripheral fitting portion for fitting to the skin is a second surface, the first surface is a plane, and the second surface is an arc surface. In this way, more vibration signals are transmitted to the cochlea through biological tissues and bones, so that the sound heard by the user is louder.

Description

Technical Field

[0001] The present application relates to the technical field of loudspeakers, and in particular to a bone conduction loudspeaker. Background Art

[0002] Normally, sound is transmitted into the ear through two pathways, namely air conduction and bone conduction, resulting in hearing.

[0003] In the bone conduction pathway, the bone conduction vibration speaker can convert the audio electrical signal into a mechanical vibration signal, and transmit the vibration signal to the cochlea through the biological tissue and bones, so that the user can hear the sound. Compared with the classic sound conduction method that generates sound waves through the diaphragm, bone conduction saves many steps in the transmission of sound waves, can achieve clear sound restoration in a noisy environment, and the sound waves will not affect others because they spread in the air.

[0004] However, the inventors of the present application discovered during a long research and development process that the sound of the currently common bone conduction speakers is relatively low and the listening experience is poor. Summary of the invention

[0005] The main technical problem solved by the present invention is how to improve the sound transmitted from the bone conduction speaker to the user's ears.

[0006] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a bone conduction speaker, which includes: a housing; a transducer assembly, which is arranged in the housing and is used to generate vibration under the stimulation of an electrical signal; a vibration transmission assembly, which is used to transmit the vibration generated by the transducer assembly to the skin to which it is attached; the vibration transmission assembly includes a vibration transmission member connected to the transducer assembly and a fitting member arranged on the vibration transmission member for fitting to the skin; the fitting member includes a central fitting portion fixedly connected to the vibration transmission member and a peripheral fitting portion surrounding the periphery of the central fitting portion and connected to the outer edge of the central fitting portion, and the central fitting portion and the peripheral fitting portion jointly fit the skin; the outer surface of the central fitting portion for fitting to the skin is a first surface, and the outer surface of the peripheral fitting portion for fitting to the skin is a second surface, the first surface is a plane, and the second surface is an arc surface. Thus, the area where the entire vibration transmission assembly fits to the user's skin is increased, so that more vibration signals are transmitted to the cochlea through biological tissues and bones, so that the sound heard by the user is louder.

[0007] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide a bone conduction speaker, comprising: a housing; a transducer assembly, arranged in the housing, and used to generate vibration under the stimulation of an electrical signal; a vibration transmission assembly, used to transmit the vibration generated by the transducer assembly to the skin to which it is attached; the vibration transmission assembly comprises a vibration transmission member connected to the transducer assembly and a fitting member arranged on the vibration transmission member for fitting to the skin; the fitting member comprises a central fitting portion fixedly connected to the vibration transmission member and a peripheral fitting portion surrounding the periphery of the central fitting portion and connected to the outer edge of the central fitting portion, and the central fitting portion and the peripheral fitting portion jointly fit the skin; the projection of the second surface on the plane where the first surface is located is roughly annular, the first surface is circular, and when the peripheral fitting portion is subjected to the pressure of the skin, the vibration transmission member does not provide support for at least part of the peripheral fitting portion. Thus, the area where the entire vibration transmission assembly fits the user's skin is increased, thereby allowing more vibration signals to be transmitted to the cochlea through biological tissues and bones, so that the sound heard by the user is louder. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the bone conduction sound generating device of the present application;

[0010] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of a bone conduction speaker of the present application;

[0011] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the bone conduction speaker of the present application;

[0012] Figure 4 It is a schematic diagram of the cross-sectional structure at a certain angle in one embodiment of the bone conduction speaker of the present application. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0014] The terms "first", "second", and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products, or devices.

[0015] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0016] The present application provides a bone conduction speaker 100 and a bone conduction sound device 200 having the bone conduction microphone 100, such as Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the bone conduction sound generating device 200 provided in the present application. Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the bone conduction speaker 100 provided in the present application.

[0017] It should be pointed out that the bone conduction sound device 200 in the embodiment of the present application can be various devices with bone conduction headphone function, for example, it can be bone conduction headphones, glasses with bone conduction sound device function, ear-worn or back-hanging fixing mechanism, hat and headwear with bone conduction sound device function, or other head-worn engineering products, head-worn military products, or hearing aids such as hearing aids, etc., and no specific limitation is made here.

[0018] The bone conduction sound generating device 200 includes: a bone conduction speaker 100 and a fixing mechanism 210. The fixing mechanism 210 acts on the bone conduction speaker 100, so that the bone conduction speaker 100 is attached to the back of the user's auricle at least when the bone conduction speaker 100 is in use. It can be understood that in different embodiments, the bone conduction speaker 100 can be at least one of an electromagnetic speaker, a piezoelectric speaker, and an electrostatic speaker. Specifically, the electromagnetic speaker can be a dynamic speaker or a moving iron speaker.

[0019] It should be noted that the auricle is a part of the outer ear and is mainly composed of cartilage. In this embodiment, the bone conduction speaker 100 is attached to the back of the user's auricle, and the cartilage of the auricle can be used to transmit bone conduction sound / vibration.

[0020] See also Figures 2 to 4 ,in Figure 3 Schematic diagram of the exploded structure of a bone conduction speaker 100 in an embodiment. Figure 4 1 is a schematic cross-sectional view of an embodiment of a bone conduction speaker 100. The bone conduction speaker 100 provided in the present application comprises a housing 10, a transducer assembly 20 disposed in the housing 10, and a vibration transmission assembly 30 connected to the transducer assembly 20.

[0021] Specifically, the housing 10 is used to accommodate and fix the transducer assembly 20 and the vibration transmission assembly 30, and serves as the outer shell of the bone conduction speaker 100. Specifically, the housing 10 includes a body 12 and a base 14, the body 12 is wrapped around the periphery of the transducer assembly 20, the body 12 and the base 14 are snap-fitted, or the body 12 and the base 14 are integrally formed of plastic. It can be understood that the housing 10 is used to carry and protect the transducer assembly 20 and the vibration transmission assembly 30.

[0022] The transducer assembly 20 is disposed in the housing 10, and is used to generate vibration under the excitation of an electrical signal, and transmit the vibration to the vibration transmission assembly 30. In one embodiment, the transducer assembly 20 is fixedly connected to the vibration transmission assembly through a connector 40. Specifically, the transducer assembly 20 includes a magnetic circuit 22, a voice coil 24, and a bracket 26 connected to the voice coil 24. Specifically, the voice coil 24 is placed in a magnetic gap formed by the magnetic circuit 22, and the voice coil 24 is connected to the bracket 26; the vibration transmission assembly 30 is connected to the bracket 26 to transmit the vibration from the bracket 26.

[0023] The vibration transmission component 30 is used to transmit the vibration generated by the transducer component 20 to the skin to which it is attached. Specifically, in one embodiment, the vibration transmission component 30 includes a vibration transmission member 32 connected to the transducer component 20 and a fitting member 34 disposed on the vibration transmission member 32 for fitting to the skin. The fitting member 34 contacts the back of the auricle, and the vibration generated by the transducer component 20 is transmitted to the auricle through the vibration transmission member 32 and the fitting member 34. Specifically, in the present application, the fitting member 34 includes a central fitting portion 342 fixedly connected to the vibration transmission member 32 and a peripheral fitting portion 344 surrounding the periphery of the central fitting portion and connected to the outer edge of the central fitting portion 342, which is used to fit to the back of the auricle of the user when the bone conduction speaker 100 is in use. Among them, the central fitting portion 342 and the peripheral fitting portion 344 fit the skin together, that is, fit to the back of the auricle of the user together, so as to increase the area where the bone conduction speaker 100 fits to the back of the auricle of the user, thereby achieving sound / vibration passing through the back of the auricle, so that the sound heard by the user is louder.

[0024] It can be understood that the fitting member 34 is made of soft rubber and the vibration transmitting member 32 is also made of plastic, but the hardness of the vibration transmitting member 32 is greater than that of the fitting member 34. The fitting member 34 fits against the back of the user's auricle and can be slightly deformed by force.

[0025] Optionally, in one embodiment, the central fitting portion 342 is at least partially a flat plane, and the peripheral fitting portion 344 is disposed around the central fitting portion 342 and is an arc surface with a relatively small curvature. Specifically, the peripheral fitting portion 342 can be elastically bent toward the housing 10 relative to the central fitting portion 342 under the pressure of the skin, so that the fitting member 34 has more area to fit with the back of the user's auricle, so that the fitting member 34 can further fully contact the back of the user's auricle, thereby improving the efficiency of the fitting member 34 in transmitting sound / vibration through the back of the user's auricle.

[0026] See also Figure 3 and Figure 4Specifically, in one embodiment, the outer end surface of the vibration transmission member 32 and the inner end surface of the central fitting portion 342 are arranged to fit each other, so that the vibration generated by the transducer assembly 20 can be better transmitted to the fitting member 34 through the vibration transmission member 32. Further, specifically, the outer end surface of the vibration transmission member 32 is an arc-shaped surface protruding toward the central fitting portion 342, and the thickness of the central fitting portion 342 gradually decreases in the direction toward the center line of the outer end surface of the vibration transmission member 32, so that the outer end surface of the central fitting portion 342 is flatter than the outer end surface of the vibration transmission member 32, so that it can better contact the back of the user's auricle. Further, optionally, specifically, in one embodiment, the outer end surface of the vibration transmission member 32 includes a top surface 322 and a circular arc surface 324 arranged around the top surface, and accordingly, the inner end surface of the central fitting portion 342 includes a first fitting portion 3422 fitted with the top surface of the vibration transmission member 32, and a second bonding portion 3424 fitted with the circular arc surface 324 of the vibration transmission member 32. The above structure increases the contact area between the vibration transmission member 32 and the central contact portion 342 , and the entire outer end surface of the vibration transmission member 32 is surrounded by the inner end surface of the central contact portion 342 , resulting in a better vibration transmission effect.

[0027] Optionally, in one embodiment, the thickness of the central fitting portion 342 is greater than the thickness of the peripheral fitting portion 344. It can be understood that the central fitting portion 342 is the central portion where the bone conduction speaker 100 fits against the back of the user's auricle. When the fitting member 34 contacts the back of the user's auricle, the central fitting portion 342 and the peripheral fitting portion 344 cooperate with the back of the user's auricle to produce corresponding deformations. Generally, the center of the central fitting portion 342 is the main force point. Therefore, the above structure is adopted, so that in the process of deformation of the fitting member 34, the central fitting portion 342 undergoes a slight deformation and better transmits the force to the peripheral fitting portion 344, so that the peripheral fitting portion 344 produces a corresponding deformation, so as to increase the fitting area between the entire fitting member 34 and the back of the user's auricle, and form a good fit.

[0028] Optionally, in one embodiment, the width of the peripheral fitting portion 3424 of the fitting piece 34 is greater than the thickness of the peripheral fitting portion 344. This ensures that the width of the peripheral fitting portion 344 is as large as possible while ensuring that the peripheral fitting portion 344 has an appropriate thickness, thereby increasing the area of ​​the entire fitting piece 34 that can fit the back of the auricle.

[0029] Optionally, in one embodiment, the fitting 34 further includes a cylindrical extension 346 connected to the outer edge of the peripheral fitting portion 344 and extending toward the shell. The cylindrical extension 346 is used to fix the entire fitting 34 on the shell 10. Further, in one embodiment, the interior of the shell 10 is further provided with a receiving groove 16, and the end of the cylindrical extension 346 away from the peripheral fitting portion 344 is inserted into the receiving groove 16 to play a fixing role. Optionally, the cylindrical extension 346 and the receiving groove 16 can be snap-fitted or interference-fitted, or the bone conduction speaker 100 of the present application further includes a sealant 50 filled in the receiving groove 16, and the sealant 50 is used to achieve a sealed connection between the cylindrical extension 346 and the shell 10, thereby achieving a good fixing effect. Other fixing forms can also be used in other embodiments, which are not specifically limited.

[0030] Optionally, in one embodiment, an annular groove 3462 is provided on the outer circumferential surface of the cylindrical extension 346, wherein the wall thickness of the cylindrical extension 346 in the annular groove 3462 is smaller than the wall thickness of other areas of the cylindrical extension 346 outside the annular groove 3462. With such a structure, the portion of the peripheral fitting portion 344 located above the annular groove 3462 can use the space formed by the annular groove 3462 as a deformation space when subjected to force, and generate corresponding deformation to better fit the back of the user's auricle.

[0031] Optionally, in one implementation, a plurality of sound-introducing holes 3444 are provided on the peripheral fitting portion 344, and the plurality of sound-introducing holes 3444 are arranged around the central fitting portion 342. With the above structure, the sound-introducing holes 3444 can effectively reduce the area of ​​the non-fitting region between the fitting 34 and the vibration-transmitting member 32, and can make the air inside and outside the fitting 34 permeable, thereby reducing the pressure difference between the inside and outside. On the other hand, the sound-introducing holes 3444 can lead the sound waves formed by the vibration of the air inside the fitting 34 to the outside of the fitting 34, and cancel out the sound leakage sound waves formed by the vibration of the fitting 34 pushing the air outside the fitting 34, so as to reduce the amplitude of the sound leakage sound waves. Optionally, in one embodiment, a plurality of sound-introducing holes 344 are arranged at intervals around the central fitting portion 342. In another embodiment, a plurality of sound-introducing holes 3444 are evenly arranged around the central fitting portion 342.

[0032] Optionally, in one embodiment, the fitting 34 is integrally formed of plastic. It is understandable that when the fitting 34 includes multiple parts, multiple parts are integrally formed of plastic, for example, the central fitting portion 342 and the peripheral fitting portion 344 are integrally formed of plastic. For another example, in an embodiment where the fitting 34 includes a central fitting portion 342, a peripheral fitting portion 344, and a tubular extension portion 346, the central fitting portion 342, the peripheral fitting portion 344, and the tubular extension portion 346 are integrally formed of plastic. In other embodiments, the multiple parts of the fitting 34 can also be spliced ​​and fixed in other ways, and are not necessarily limited to being integrally formed of plastic.

[0033] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A bone conduction speaker, comprising: case; A transducer assembly is disposed in the housing and is used to generate vibration under the stimulation of an electrical signal; A vibration transmission component, used to transmit the vibration generated by the energy conversion component to the skin to which it is attached; It is characterized in that The vibration transmission component includes a vibration transmission member connected to the transducer component and a fitting member arranged on the vibration transmission member for fitting to the skin; the fitting member includes a central fitting portion fixedly connected to the vibration transmission member and a peripheral fitting portion arranged around the periphery of the central fitting portion and connected to the outer edge of the central fitting portion, the central fitting portion and the peripheral fitting portion fit the skin together; the outer surface of the central fitting portion for fitting to the skin is a first surface, and the outer surface of the peripheral fitting portion for fitting to the skin is a second surface, the first surface is a plane that is at least partially flat, and the second surface is an arc surface; the outer end surface of the vibration transmission member is an arc-shaped surface convex toward the central fitting portion, and the thickness of the central fitting portion gradually decreases in the direction of the center line of the outer end surface of the vibration transmission member; the hardness of the vibration transmission member is greater than the hardness of the fitting member.

2. The bone conduction speaker according to claim 1, characterized in that: The projection of the second surface on the plane where the first surface is located is roughly in the shape of a circular ring, the first surface is in the shape of a circle, and the width of the circular ring is smaller than the radius of the circle.

3. The bone conduction speaker according to claim 1, characterized in that: When the peripheral fitting portion is under pressure, the vibration transmission member does not provide support for at least a portion of the peripheral fitting portion.

4. The bone conduction speaker according to claim 1, characterized in that: The peripheral fitting portion is not directly connected to the vibration transmitting member.

5. The bone conduction speaker according to claim 1, characterized in that: The outer fitting portion is provided with a sound introduction hole; the sound introduction hole is arranged on one side of the outer fitting portion close to the central fitting portion.

6. The bone conduction speaker according to claim 1, characterized in that: The fitting member includes a cylindrical extension portion connected to the outer edge of the peripheral fitting portion and extending toward the shell.

7. The bone conduction speaker according to claim 6, characterized in that: The projection of the cylindrical extension portion on the plane where the first surface is located is located within the projection of the peripheral fitting portion on the plane where the first surface is located.

8. The bone conduction speaker according to claim 6, characterized in that: The thickness of one end of the cylindrical extension portion connected to the peripheral fitting portion is smaller than the thickness of the other end thereof.

9. A bone conduction speaker, comprising: case; A transducer assembly is disposed in the housing and is used to generate vibration under the stimulation of an electrical signal; A vibration transmission component, used to transmit the vibration generated by the energy conversion component to the skin to which it is attached; It is characterized in that The vibration transmission component includes a vibration transmission member connected to the transducer component and a fitting member arranged on the vibration transmission member for fitting to the skin; the fitting member includes a central fitting portion fixedly connected to the vibration transmission member and a peripheral fitting portion surrounding the periphery of the central fitting portion and connected to the outer edge of the central fitting portion, the central fitting portion and the peripheral fitting portion fitting to the skin together; the outer surface of the central fitting portion for fitting to the skin is a first surface, and the outer surface of the peripheral fitting portion for fitting to the skin is a second surface, the projection of the second surface on the plane where the first surface is located is roughly annular, the first surface is circular, and when the peripheral fitting portion is subjected to pressure from the skin, the vibration transmission member does not provide support for at least part of the peripheral fitting portion; the outer end surface of the vibration transmission member is an arc-shaped surface convex toward the central fitting portion, and the thickness of the central fitting portion gradually decreases in the direction of the center line of the outer end surface of the vibration transmission member; the hardness of the vibration transmission member is greater than the hardness of the fitting member.

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