Waterproof key of bone conduction earphone

Abstract

The utility model discloses a waterproof key of a bone conduction earphone. The waterproof key comprises a waterproof key device, a cavity structure and a circuit driving device, the circuit driving device is used for driving the bone conduction vibration unit; the circuit driving device is arranged in the sealed cavity; the bone conduction vibration unit is connected with the circuit driving device, and the vibration unit and a connecting conductor wire part of the circuit driving device are arranged in a sealed cavity; and the bone conduction vibration unit is in direct or indirect contact with the body of a user.

Description

Technical Field

[0001] This utility model relates to the field of bone conduction headphones, and in particular to a waterproof button for bone conduction headphones. Background Technology

[0002] Generally, consumers use Bluetooth headphones, especially bone conduction Bluetooth headphones, for outdoor sports. In such environments, the requirements for the waterproof and sweatproof performance of Bluetooth headphones are relatively high. In fact, many consumers have an increasing need to use them near or in water. This invention can accurately address consumer needs by improving the waterproof rating, and it is also easy to produce, thus improving assembly and production efficiency.

[0003] At that time, existing bone conduction headphones were generally touch-screen headphones. Touch-screen headphones are greatly affected by chips and touch screens, so they often have problems such as accidental touches or inability to touch, such as sweating. Therefore, existing ones generally use press-type touch screens, which have a poorer user experience and higher power consumption. Summary of the Invention

[0004] This application discloses a waterproof button for bone conduction headphones, comprising a waterproof button device, a cavity structure, and a circuit driving structure; the circuit driving structure is used to drive a bone conduction vibration unit; the circuit driving structure is placed in a sealed cavity; the bone conduction vibration unit is connected to the circuit driving structure, and the conductive wire connecting the vibration unit and the circuit driving structure is placed in the sealed cavity; the bone conduction vibration unit is in direct or indirect contact with the user's body. The waterproof button for bone conduction headphones is characterized by comprising a waterproof button device, a cavity structure, and a circuit driving structure; the circuit driving structure is used to generate driving force; the waterproof button device is at least partially in contact with the cavity structure; the waterproof button device and the cavity structure form a sealed cavity; the waterproof button device includes a keycap portion, a spring arm portion, a waterproof portion, a contact portion, and a support portion; wherein, the circuit driving structure is placed in the sealed cavity; it is connected to the bone conduction vibration unit through a conductive wire and can drive the bone conduction vibration unit to work; the conductive wire is at least partially placed in the sealed cavity.

[0005] In the waterproof button device, the keycap portion is placed outside the cavity structure. The waterproof portion is provided with a concave-convex structure, which is made of a soft material that can deform under pressure. The concave-convex structure contacts the cavity structure and partially deforms under the pressure of the support portion to form a sealed cavity with the cavity structure.

[0006] The keycap portion is thicker than the elastic arm portion. Under external force, the force on the keycap portion and the elastic arm portion is unevenly distributed, and the deformation range of the elastic arm portion is between 0.1-3mm. When the waterproof button device comes into contact with the human body, the waterproof button device has a non-uniform pressure distribution area.

[0007] The waterproof key device includes a keycap, a spring arm, a waterproof part, a contact part, and a support part; in one embodiment, the keycap, spring arm, waterproof part, contact part, and support part can be separate independent components, made of different materials, and fixed together by means of bonding, assembly, or in-mold injection molding; in another embodiment, the keycap, spring arm, waterproof part, and contact part can be a single unit; when the keycap, spring arm, waterproof part, and contact part are a single unit, the keycap, spring arm, waterproof part, and contact part are... The material is soft, and the elastic arm is 0.1-1.5mm thick, providing good elasticity. The contact part can be made of a hard material to provide a better key feel when in contact with the key contacts. The support part is a separate, independent component made of a hard material, such as nylon + glass fiber, PC, or other hard materials like metal. The overall thickness of the support part is 0.1-1mm. In one embodiment, it can be achieved through metal stamping. The support part comes into direct or indirect contact with the keycap, elastic arm, and waterproof part through assembly or in-mold injection molding.

[0008] The cavity structure is provided with at least one inner groove, and the inner groove has a through hole in a part. The keycap part passes through the through hole in at least a part. The depth of the inner groove is between 0.1-7mm. The area of ​​the through hole accounts for no more than 90% of the total area of ​​the inner groove. The waterproof key device is placed in the inner groove in at least a part.

[0009] The waterproof button device's waterproof part, support part, and the concave and convex structures set on the waterproof part are all of a certain regular shape, such as racetrack shape, circle, square, etc., in order to achieve a better waterproof sealing effect.

[0010] The support is located inside the waterproof part or in the middle of the waterproof part; the height of the support is level with the center point of the concave and convex structure provided in the waterproof part.

[0011] In another embodiment, the support portion is higher than the center point of the concave-convex structure, and in this case, the distance between the support portion and the keycap portion is closer than the distance between the center point of the concave-convex structure and the keycap portion.

[0012] The outer diameter of the concave-convex structure of the waterproof part is larger than the inner diameter of the inner groove, and the outer diameter of the concave-convex structure is 0.1-2mm larger than the inner diameter of the inner groove.

[0013] The waterproof portion is at least partially placed in close contact with the inner groove, the waterproof portion

[0014] Under the action of the support, it makes uniform and tight contact with the inner groove and forms a sealing area.

[0015] The support portion is a regular ring shape, which can be circular, racetrack-shaped, rectangular, or a regular irregular shape.

[0016] The supporting part has a certain hardness and strength. The density of the supporting part material is higher than that of the waterproof part. When the waterproof part and the inner groove are squeezed and subjected to force, the waterproof part undergoes regular deformation. The supporting part does not deform or the size and range of the deformation are much smaller than the size and range of the deformation of the waterproof part.

[0017] The waterproof key device includes a keycap portion, and there is a significant difference in thickness between the keycap portion and the elastic arm portion. The overall thickness of the keycap portion is 1.5-15 times that of the elastic arm portion to obtain a better feel. When an external force is applied to the surface of the keycap, the difference in thickness causes uneven or non-uniform force distribution; the corresponding reaction force is also unevenly distributed. The surface of the keycap portion may be provided with at least one concave or convex shape to cause uneven force distribution under the action of external force.

[0018] The circuit drive structure is placed in the cavity structure and is connected to the bone conduction vibration unit and battery assembly through a power line, thereby driving the bone conduction vibration unit to generate frequency vibration. The function button is part of the circuit drive structure and is used to trigger the function. The function button is equipped with a button trigger handle; the button trigger handle is in direct or indirect contact with the contact part in the waterproof button device.

[0019] The edge of the circuit drive structure near the waterproof button device is in direct or indirect contact with the waterproof button device, abutting against the waterproof button device to prevent the keycap in the waterproof button device from moving backward under external force; the circuit drive structure is fixed in the cavity structure by screws, clips or glue.

[0020] The aforementioned waterproof button and earphone for bone conduction headphones, wherein the circuit driving structure 103 is placed in the cavity structure 102 and is electrically connected to the bone conduction vibration unit 105 and the battery assembly 104 via a power line 1032. The power line 1032 is at least partially placed in functional sealed cavities A3 and A4, respectively. Functional sealed cavities A3 and A4 are each provided with at least one power line through hole 102b and a power line through hole 102c. Functional sealed cavities A3 and A4 are filled with waterproof material to achieve a sealing and waterproof function, and the outer sheath of the power line is made of waterproof material.

[0021] Compared to the touch buttons of existing bone conduction headphones, it adopts a multi-layer sealing structure to achieve a sealed cavity function, while also improving ease of use. Attached Figure Description

[0022] Figure 1 A cross-sectional view of the overall composition of a waterproof button and earphone for a bone conduction headphone;

[0023] Figure 2 This is a cross-sectional view of the waterproof button device;

[0024] Figure 3 Figures illustrating different positions of the support portion in a waterproof button device;

[0025] Figure 4 Figures illustrating different configurations of the keycap portion in a waterproof button device;

[0026] Figure 5 A schematic diagram showing the interference between the waterproof part and the concave-convex structure and the inner groove in a waterproof button device;

[0027] Figure 6 A schematic diagram of a waterproof button for a bone conduction headphone and the assembly of a sealed cavity, through hole, and waterproof button device in the headphone's cavity structure.

[0028] Figure 7 A three-dimensional component of a waterproof button for bone conduction headphones Figure 1 ;

[0029] Figure 8 A three-dimensional component of a waterproof button for bone conduction headphones Figure 2 ;

[0030] Figure 9 A three-dimensional cross-sectional view of the components of a waterproof button for a bone conduction headphone;

[0031] Figure 10 A three-dimensional view of the components of a waterproof button for a bone conduction headphone;

[0032] Figure 11 A three-dimensional cross-sectional view of the overall components of a waterproof button and earphone for bone conduction headphones;

[0033] Figure 12 Schematic diagrams of different solutions for waterproof button devices and keycaps;

[0034] Figure 13 A cross-sectional view of a waterproof button and earphone for bone conduction headphones;

[0035] Figure 14 This is a schematic diagram of the waterproof button of a bone conduction headphone and the inner diameter of the groove and the outer diameter of the concave-convex structure of the headphone. Detailed Implementation

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model and do not limit the application scope of this utility model. For those skilled in the art, without creative effort, this utility model can be applied to other similar scenarios based on these drawings.

[0037] As indicated in this specification and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. The term "based on" means "at least partially based on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment." Definitions of other terms will be given in the description below.

[0038] Without loss of generality, the description of bone conduction-related technologies in this invention will use the terms "bone conduction speaker" or "bone conduction headphones." This description represents only one form of bone conduction application, and for those skilled in the art, "speaker" or "headphones" can be replaced with other similar terms, such as "player" or "hearing aid." In fact, the various implementations of this invention can be readily applied to other non-speaker hearing devices.

[0039] Bone conduction speakers transmit sound through bones to the auditory system, thereby producing hearing; the aforementioned bone conduction headphones with waterproof buttons and headphones are characterized by comprising a waterproof button device 101, a cavity structure 102, a circuit drive structure 103, a battery assembly 104, and a bone conduction vibrator assembly 105.

[0040] Figure 1 The diagram shows a cross-sectional view of the waterproof buttons and overall composition of the bone conduction headphones. The main components include: a bone conduction vibrator assembly 105 connected to a circuit drive structure 103 and a battery assembly 104 via a power cable 1032; and a bone conduction vibrator assembly 105 generating frequency vibrations driven by the circuit drive structure 103, which are transmitted to humans or animals with hearing systems. It should be noted that the following description of human use of bone conduction speakers does not constitute a limitation on the application scenarios of bone conduction speakers, and similar descriptions can be applied to other animals as well.

[0041] The above description of the general process of a bone conduction loudspeaker is merely a specific example and should not be considered the only feasible implementation. Obviously, those skilled in the art, after understanding the basic principles of bone conduction loudspeakers, may make various modifications and changes in form and detail to the specific methods and steps of implementing a bone conduction loudspeaker without departing from these principles; however, these modifications and changes remain within the scope of the above description. For example, in... Figure 1Between the generation of frequency vibrations in the bone conduction oscillator assembly 105 driven by the circuit drive structure 103, an additional signal correction or enhancement step can be added. This step can enhance or modify the signal acquired in the bone conduction oscillator assembly 105 according to a specific algorithm or parameters. Furthermore, an additional vibration enhancement or correction step can be added. This step can enhance or modify the vibrations generated by the bone conduction oscillator assembly 105 based on environmental parameters. The methods and steps described herein can be implemented in any suitable order, or simultaneously, where appropriate. Additionally, individual steps can be omitted from any method without departing from the spirit and scope of the subject matter described herein. Aspects of any example described above can be combined with aspects of any example from other examples described to constitute further examples without losing the desired effect.

[0042] Specifically, in Figure 1 In this process, the bone conduction transducer assembly 105 can acquire or generate signals containing sound information in different ways. Sound information can refer to video or audio files with a specific data format, or generally to data or files that can ultimately be converted into sound through a specific means. Signals containing sound information can originate from the storage unit of the bone conduction speaker itself, or from information generation, storage, or transmission systems outside the bone conduction speaker. The sound signals discussed here are not limited to electrical signals, but can also include other forms such as optical signals, magnetic signals, and mechanical signals. In principle, as long as the signal contains sound information that the speaker can use to generate vibrations, it can be processed as a sound signal. Sound signals are not limited to a single signal source and can come from multiple signal sources. These multiple signal sources can be related or unrelated. The transmission or generation of sound signals can be wired or wireless, and can be real-time or delayed.

[0043] The examples described above are for illustrative purposes only. The medium for wired connections can also be other types, such as other electrical or optical signal transmission carriers. For example, in some application scenarios of this technology, bone conduction speakers can acquire signals containing sound information from other devices via Bluetooth technology, or they can directly acquire data from the storage unit built into the bone conduction speaker and then generate sound signals.

[0044] The aforementioned waterproof button and earphone for bone conduction headphones are characterized by comprising a waterproof button device 101, a cavity structure 102, and a circuit driving structure 103.

[0045] The circuit driving structure 103 is used to generate driving force;

[0046] The waterproof button device 101 is at least partially in contact with the cavity structure 102; the waterproof button device 101 and the cavity structure 102 form a sealed cavity A1;

[0047] The cavity structure 102 can be formed into a specific shape by CNC machining or injection molding, and the material can be metal, plastic or composite material, etc.

[0048] The waterproof button device 101 includes a keycap portion 1011, a spring arm portion 1012, a waterproof portion 1013, a contact portion 1011a, and a support portion 1014;

[0049] The circuit driving structure 103 is placed in the sealed cavity A1; it is connected to the bone conduction vibration unit 105 via a conductive wire 1032 and can drive the bone conduction vibration unit 105 to work; the conductive wire 1032 is at least partially placed in the sealed cavity A1. The conductive wire 1032 is at least partially placed in the sealed cavities A3 and A4 respectively. At least one power line is provided in the sealed cavity A3 through the through hole 102b, and at least one power line is provided in the sealed cavity A4 through the through hole 102c. The conductive wire 1032 partially passes through the power line through the through hole 102b and the power line through the through hole 102c. Waterproof material 102a is injected into the sealed cavities A3 and A4 to form a waterproof sealed cavity A1.

[0050] Figure 2 As shown, in the waterproof button device 101, the keycap portion 1011 is placed outside the cavity structure 102. The waterproof portion 1013 is provided with a concave-convex structure 1013a. The concave-convex structure 1013a is made of a soft material and can deform under pressure. The concave-convex structure 1013a contacts the cavity structure 102 and partially deforms under the pressure of the support portion 1014 to form a sealed cavity A1 with the cavity structure 102.

[0051] The keycap portion 1011 is thicker than the elastic arm portion 1012. Under external force, the force on the keycap portion 1011 and the elastic arm portion 1012 is unevenly distributed, and the deformation range of the elastic arm portion 1012 under force is between 0.1-3mm. When the waterproof key device 101 comes into contact with the human body and is subjected to force, the waterproof key device 101 has a non-uniform pressure distribution area.

[0052] The aforementioned waterproof button and earphone for bone conduction headphones, in one embodiment, are characterized in that the keycap portion 1011, elastic arm portion 1012, waterproof portion 1013, contact portion 1011a, and support portion 1014 can be individual independent components, combined together through processes such as assembly, dispensing, riveting, hot melting, and ultrasonication; in another embodiment, the keycap portion 1011, elastic arm portion 1012, waterproof portion 1013, and contact portion 1011a can be a single unit; when the keycap portion 1011, elastic arm portion 1012, waterproof portion 1013, and contact portion 1011a are a single unit, the keycap portion 1011, elastic arm portion 1012, waterproof portion 1013, and contact portion 1011a can be combined into a single unit. 1011a is made of a soft material, preferably a composite material such as silicone, TPU, TPE, or TPEE, possessing good elasticity, toughness, and waterproofing. It is formed by hot pressing or injection molding. The elastic arm 1012 has a thickness between 0.1-1.5mm. The contact part 1011a can be made of a rigid material to provide a better key feel when in contact with the key contact 1031a of the key 1031. The support part 1014 is a separate, independent component made of a rigid material, such as nylon + glass fiber, PC, or other rigid materials. It directly or indirectly contacts the keycap 1011, elastic arm 1012, and waterproof part 1013 through assembly or in-mold injection molding. The support part 1014 can be a regular shape such as a cylinder, cuboid, or cube.

[0053] The aforementioned waterproof buttons and earphones for bone conduction headphones.

[0054] The cavity structure 102 is provided with at least one inner groove A2, and a keycap through hole A5 is partially provided in the inner groove A2. The keycap portion 1011 passes through the keycap through hole A5 at least partially. The depth of the inner groove A2 is between 0.1-7mm, and the area of ​​the through hole accounts for no more than 90% of the total area of ​​the inner groove A2.

[0055] The waterproof button device 101 is at least partially placed in the inner groove A2.

[0056] Figure 4 As shown, the waterproof part 1013, the support part 1014, and the concave-convex structure 1013a provided in the waterproof part 1011 are all of a certain regular shape, such as racetrack shape, circle, square, etc., in order to achieve a better waterproof sealing effect.

[0057] like Figure 3As shown, the support part 1014 is placed inside the waterproof part 1013 or in the middle of the waterproof part 1013; the height H2 of the support part 1014 from bottom to top is level with the center point W of the concave-convex structure 1013a provided in the waterproof part 1013, that is, the height H1 from the center point W of the concave-convex structure 1013a to the bottom of the support part 1014 is the same, that is, H1=H2.

[0058] In another embodiment, the height H2 of the support portion 1014 from bottom to top is higher than the height H1 from the center point W of the concave-convex structure 1013a to the bottom of the support portion 1014. In this case, the distance H3 of the support portion 1014 from the keycap portion is smaller than the distance H4 of the center point W of the concave-convex structure 1013a from the keycap portion, that is, H3 < H4.

[0059] like Figure 12 As shown, the outer diameter 1013a1 of the concave-convex structure 1013a is larger than the inner diameter A201 of the inner groove A2, and the outer diameter of the concave-convex structure 1013a is 0.1-2mm larger than the inner diameter a201 of the inner groove. The material hardness of the concave-convex structure 1013a can be adjusted according to actual needs to achieve a better waterproof effect.

[0060] The waterproof part 1013 is at least partially placed in the inner groove A2 and is in close contact with the inner groove A2 in a closed shape. Under the action of the support part 1014, the waterproof part 1013 is in uniform and close contact with the inner groove A2 and forms a sealed area.

[0061] The aforementioned waterproof button and earphone for bone conduction headphones are characterized in that the support portion 1014 is a regular ring shape, which can be circular, racetrack-shaped, rectangular, or a regular irregular shape.

[0062] The support part 1014 has a certain hardness and strength. The density of the material of the support part 1014 is higher than that of the waterproof part 1013. When the waterproof part 1013 is squeezed and subjected to force with the inner groove A2, the waterproof part 1013 undergoes regular deformation. The support part 1014 does not deform or the size and range of the deformation are much smaller than the size and range of the deformation of the waterproof part 1013.

[0063] The aforementioned waterproof button for bone conduction headphones and headphones, wherein the waterproof button device 101 includes a keycap portion 1011, and the keycap portion 1011 and the elastic arm portion 1012 have a significant difference in thickness. The overall thickness of the keycap portion 1011 is 1.5-15 times that of the elastic arm portion 1012 to obtain a better tactile feel. When external force is applied to the surface of the keycap 1011, the difference in thickness causes uneven or non-uniform force distribution; correspondingly, the reaction force is also unevenly distributed; such as... Figure 10As shown, the surface of the keycap portion 1011 may be provided with at least one concave or convex shape, resulting in an uneven distribution of force under external force. To obtain better elasticity, the elastic arm portion 1012 can be made into an arc shape, wave shape, or other shapes to achieve a better travel distance, resulting in better key feel and more comfortable operation. The figure shows an example where the contact surface of the keycap portion 1011 has both raised and recessed portions; the number of raised and recessed portions is not limited to one or more. More preferably, there are two raised portions; even more preferably, there are at least five raised portions. The shape of the raised portions can be circular, elliptical, triangular, rectangular, trapezoidal, irregular polygonal, or other similar shapes. The structure of the raised portions can be symmetrical or asymmetrical, and the positional distribution of the raised portions can also be symmetrical or asymmetrical. The number of raised portions can be one or more, and the height of the raised portions can be the same or different, with the height and distribution of the raised portions forming a certain gradient.

[0064] The ratio of the number of recesses to the number of protrusions is 0.1-100, preferably 1-80, more preferably 5-60, and even more preferably 10-20. The structure of the recessed portions can be symmetrical or asymmetrical, and the positional distribution of the recessed portions can also be symmetrical or asymmetrical. The number of recessed portions can be one or more, and the shapes of the recessed portions can be the same or different. The area of ​​a single recess accounts for 1%-80% of the total area, preferably 5%-70%, more preferably 8%-40%. The total area of ​​all recesses accounts for 5%-80% of the total area, preferably 10%-60%. There can be at least one recess, preferably one, more preferably two, and even more preferably at least five. The shape of the recess can be circular, elliptical, triangular, rectangular, trapezoidal, irregular polygonal, or other similar shapes.

[0065] The aforementioned waterproof button and earphone for bone conduction headphones are characterized in that the circuit driving structure 103 is placed in the cavity structure 102 and is electrically connected to the bone conduction vibration unit 105 and the battery assembly 104 through the power line 1032, thereby driving the bone conduction vibration unit 105 to generate frequency vibration. The function button 1031 is part of the circuit driving structure 103 and is used to trigger the function. The function button 1031 is provided with a button trigger handle 1031a. The button trigger handle 1031a is in direct or indirect contact with the contact part 1011a in the waterproof button device 101.

[0066] The aforementioned waterproof button and earphone for bone conduction headphones are characterized in that the edge of the circuit driving structure 103 near the waterproof button device 101 directly or indirectly contacts the waterproof button device 101 and abuts against the waterproof button device 101 to prevent the keycap portion 1011 in the waterproof button device 101 from moving backward under the action of external force; the circuit driving structure 103 is fixed in the cavity structure 102 by means of screws, clips or glue.

[0067] The aforementioned waterproof button and earphone for bone conduction headphones are characterized in that the circuit driving structure 103 is placed in the cavity structure 102 and is electrically connected to the bone conduction vibration unit 105 and the battery assembly 104 through the power line 1032. The power line 1032 is at least partially placed in the functional sealed cavity A3 and the functional sealed cavity A4. The functional sealed cavity A3 and the functional sealed cavity A4 are respectively provided with at least one power line through hole 102b and a power line through hole 102c. The functional sealed cavity A3 and the functional sealed cavity A4 are filled with a waterproof material to achieve a sealing and waterproof function. The outer sheath of the power line is made of waterproof material.

[0068] The above-described embodiments are merely illustrative of several specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model. For example, the methods of altering bone conduction sound transmission disclosed in this specification can be arbitrarily combined and modified, but these modifications and combinations are still within the scope of protection of the claims of this utility model.

Claims

1. A waterproof button for bone conduction headphones, characterized in that, Including waterproof button design and cavity structure; The cavity structure has openings, and the waterproof button device is located in the openings. The waterproof button device is at least partially in contact with the inner peripheral wall of the hole; The waterproof button device and the hole form a sealed cavity around the cavity structure; The waterproof button device includes a keycap part, a spring arm part, a waterproof part, a contact part, and a support part; In the waterproof button device, the keycap portion is located outside the cavity structure, and the waterproof portion has a concave-convex structure. The textured surface is made of a soft material, and it can deform under pressure. The concave-convex structure part makes elastic contact with the wall surface of the hole, and under the pressure of the support part, it partially deforms and forms a sealed cavity with the cavity structure.

2. The waterproof button for bone conduction headphones according to claim 1, characterized in that, It also includes a circuit driving structure, which is used to generate driving force; The circuit driving structure is placed in a sealed cavity; it is connected to the bone conduction vibration unit via a conductive wire and can drive the bone conduction vibration unit to work; the conductive wire is at least partially placed in the sealed cavity.

3. The waterproof button for bone conduction headphones according to claim 1, characterized in that, The thickness of the keycap portion is greater than the thickness of the elastic arm portion. Under the action of external force, the force borne by the keycap portion and the elastic arm portion is unevenly distributed, and the deformation range of the elastic arm portion under force is between 0.1-3mm. When the waterproof button device comes into contact with the human body, the waterproof button device has a non-uniform pressure distribution area.

4. The waterproof button for bone conduction headphones according to claim 1, characterized in that, The keycap, elastic arm, waterproof part, contact part, and support part can be separate independent components or a whole; When the keycap, elastic arm, waterproof part, and contact part are integrated as a single unit, the keycap, elastic arm, waterproof part, and contact part are made of soft material, and the thickness of the elastic arm part is between 0.1-1.5mm. The contact portion is made of a hard material; The support part is made of rigid material, and the support part is in direct or / and indirect contact with the keycap part, elastic arm part, and waterproof part through assembly or in-mold injection molding.

5. The waterproof button for bone conduction headphones according to claim 1, characterized in that, The cavity structure is provided with at least one internal groove. The inner groove has a partial through hole, through which the keycap portion passes at least partially. The depth of the inner groove is between 0.1 and 7 mm. The area of ​​the through hole accounts for no more than 90% of the total area of ​​the inner groove. The waterproof button device is at least partially placed in the inner groove.

6. The waterproof button for bone conduction headphones according to claim 1, characterized in that, The waterproof button device has a regular shape for its waterproof part, support part, and the concave and convex structures on the waterproof part. The regular shapes are racetrack-shaped, circular, and square; The support portion is located inside the waterproof portion or in the middle of the waterproof portion; The height of the support part is level with the center point of the concave-convex structure provided in the waterproof part; The support portion is higher than the center point of the concave-convex structure; The outer diameter of the concave-convex structure of the waterproof part is larger than the inner diameter of the inner groove, and the outer diameter of the concave-convex structure is 0.1-2mm larger than the inner diameter of the inner groove. The waterproof portion is at least partially placed in the inner groove and at least partially in close contact with it; The waterproof part, under the action of the support part, makes uniform and tight contact with the inner groove part to form a sealed area.

7. The waterproof button for bone conduction headphones according to claim 1, characterized in that, The overall thickness of the keycap portion is 1.5-15 times the thickness of the elastic arm portion; The keycap surface may have at least one concave or convex shape, which causes uneven force distribution under external force.

8. The waterproof button for bone conduction headphones according to claim 2, characterized in that, The circuit drive structure is placed inside the cavity structure and is electrically connected to the bone conduction vibration unit and battery assembly via a power line, thereby driving the bone conduction vibration unit to generate frequency vibration. Function keys are part of the circuit driving structure and are used to trigger functions. The function buttons are configured to trigger the handle; The button trigger handle makes direct or indirect contact with the contact part in the waterproof button device.

9. The waterproof button for bone conduction headphones according to claim 8, characterized in that, The edge of the circuit drive structure near the waterproof button device is in direct or indirect contact with the waterproof button device, abutting against the waterproof button device to prevent the keycap part in the waterproof button device from moving backward under external force; the circuit drive structure is fixed in the cavity structure by screws, clips or glue.

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