Bone conduction earphone head and bone conduction earphone

Abstract

The utility model discloses a bone conduction earphone head and a bone conduction earphone, and relates to the technical field of bone conduction. The bone conduction earphone head comprises a first shell and a second shell, wherein the first shell comprises an annular first tube part; the second shell is provided with a second end face facing the first pipe part, the first pipe part is provided with a first end face facing the second shell, and the first end face abuts against the second end face; one of the first end face and the second end face is provided with an annular glue groove, the other end face is provided with an annular flange extending into the glue groove, a gap is formed between the glue groove and the flange, and the gap is filled with glue. According to the waterproof shell, the glue groove is connected with the flange in a matched mode, the gap between the glue groove and the flange is filled with the glue, the sealing performance of the connecting position of the first shell and the second shell is guaranteed, and therefore the waterproof effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bone conduction, in particular to a bone conduction earphone head and a bone conduction earphone. Background Art

[0002] Bone conduction headphones include an earphone head for generating vibrations. When in use, the earphone head fits against the skin of the human face, transmitting the vibrations to the human face, allowing the person to hear the sound through the vibrations.

[0003] The bone conduction earphone head includes a shell assembly and components such as a vibration device and a circuit board arranged inside the shell assembly. In order to install components such as the vibration device and the circuit board in the shell assembly, the shell assembly must be connected by at least two shells to provide an opening for installation.

[0004] The tightness of the connection between the shells of the outer shell assembly determines the waterproof effect of the bone conduction earphone head. If the waterproof effect of the bone conduction earphone head is not good, then when using it in water such as rainy days or swimming, it is easy for the bone conduction earphone head to enter water, causing it to not work properly, affecting the user experience.

[0005] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content

[0006] The utility model aims to provide a bone conduction earphone head and a bone conduction earphone, wherein the bone conduction earphone head has a better waterproof effect.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model proposes a bone conduction earphone head, comprising:

[0008] A first housing including a first tube portion;

[0009] A second shell body is provided with a second end surface facing the first tube part, the first tube part is provided with a first end surface facing the second shell body, and the first end surface abuts against the second end surface;

[0010] One of the first end face and the second end face is provided with an annular glue groove, and the other is provided with an annular flange extending into the glue groove. There is a gap between the glue groove and the flange, and the gap is filled with glue.

[0011] Furthermore, the thickness of the flange gradually increases toward the end surface where the flange is located, and the width of the flange at its narrowest point ranges from 0.2 to 1 mm.

[0012] Furthermore, the width of the flange at its narrowest point ranges from 0.3 to 0.6 mm.

[0013] Furthermore, the width of the glue groove gradually increases toward the end face where the flange is located, the bottom width of the glue groove is greater than the width of the narrowest part of the flange, and the difference between the bottom width of the glue groove and the width of the narrowest part of the flange is in the range of 0.08~0.2mm.

[0014] Furthermore, the difference between the bottom width of the glue groove and the width of the narrowest part of the flange is in the range of 0.11 to 0.17 mm.

[0015] Furthermore, the height of the flange ranges from 0.2 to 1.8 mm.

[0016] Furthermore, the height of the flange ranges from 0.4 to 1.5 mm.

[0017] Furthermore, the height of the flange ranges from 0.6 to 1.2 mm.

[0018] Further, the housing provided with the glue groove comprises a first annular boss located outside the glue groove and a second annular boss located inside the glue groove, and the glue groove is formed between the first annular boss and the second annular boss;

[0019] The first annular boss abuts against the end face provided with the flange, the end face of the first annular boss is the end face provided with the glue groove, and the second annular boss does not abut against the end face provided with the flange.

[0020] Further, the height of the second annular boss is smaller than the heights of the flange and the first annular boss, and in the protruding direction of the second annular boss, there is a gap between the second annular boss and the shell provided with the flange.

[0021] Furthermore, the width of the bottom of the glue groove is greater than the minimum width of the second annular boss.

[0022] Furthermore, along the protruding direction of the flange, the flange and the second annular boss have a highly overlapping area, the height of the overlapping area is less than the height of the second annular boss, and the height range of the overlapping area is 0.15~0.8mm.

[0023] The height range of the overlapping area is 0.2-0.5 mm.

[0024] Further, the glue groove includes a bottom wall and an outer wall and an inner wall connected to the bottom wall, the outer wall is located outside the flange, and the inner wall is located inside the flange;

[0025] There are gaps between the flange and the bottom wall, the outer wall and the inner wall.

[0026] Further, a minimum gap between the flange and the outer side wall is smaller than a minimum gap between the flange and the inner side wall.

[0027] Further, the distance between the flange and the bottom wall ranges from 0.03 to 0.5 mm;

[0028] The spacing between the flange and the outer side wall is in the range of 0.02 to 0.15 mm;

[0029] The spacing between the flange and the inner side wall ranges from 0.05 to 0.3 mm.

[0030] Further, the distance between the flange and the bottom wall ranges from 0.06 to 0.35 mm;

[0031] The spacing between the flange and the outer side wall is in the range of 0.04 to 0.1 mm;

[0032] The spacing between the flange and the inner side wall ranges from 0.08 to 0.2 mm.

[0033] Furthermore, the distance between the flange and the bottom wall ranges from 0.08 to 0.25 mm.

[0034] Further, the first shell is provided with a first plate portion sealing an open end of the first tube portion, and the first plate portion is located at an opposite end of the first end surface;

[0035] The second shell seals the opening of the end portion connected to the first tube portion, and the second shell is in the shape of a plate; or, the second shell includes a second tube portion and a second plate portion sealing an open end of the second tube portion, the second end face is arranged on the second tube portion, the second plate portion is located at the opposite end of the second end face, and the second end face is in contact with the first end face.

[0036] Furthermore, the bone conduction earphone head further comprises a third shell, the first shell is connected between the second shell and the third shell, and the second shell and the third shell respectively seal the two open ends of the first tube;

[0037] The first tube portion is provided with a third end surface facing the third shell, the third shell is provided with a fourth end surface facing the first tube portion, and the third end surface is in contact with the fourth end surface;

[0038] One of the third end face and the fourth end face is provided with an annular glue groove, and the other is provided with an annular flange extending into the glue groove, and a gap is provided between the glue groove and the flange, and the gap is filled with glue.

[0039] On the other hand, the present invention also provides a bone conduction earphone, which comprises the bone conduction earphone head as described in any one of the above items.

[0040] Compared with the prior art, the utility model has the following beneficial effects: the bone conduction earphone head includes a first shell and a second shell, the first shell includes a first tube; the second shell is provided with a second end face facing the first tube, the first tube is provided with a first end face facing the second shell, and the first end face abuts against the second end face. One of the first end face of the first shell and the second end face of the second shell is provided with an annular glue groove, and the other is provided with an annular flange extending into the glue groove, the glue groove is filled with glue, the glue connects and fixes the first shell and the second shell, and seals the gap between the flange and the glue groove, so that the gap between the connection structure of the first shell and the second shell is sealed by glue, which effectively improves the sealing effect of the connection between the shells, thereby facilitating the improvement of the waterproof effect of the bone conduction earphone head. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 1 is a schematic diagram of a bone conduction earphone head in an embodiment of the present invention. In the figure, the bone conduction earphone head includes a first shell, a second shell and a third shell.

[0042] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the first shell.

[0043] Figure 3 yes Figure 1 Schematic diagram of the second shell in FIG.

[0044] Figure 4 yes Figure 1 A cross-sectional view of the bone conduction headphone head shown.

[0045] Figure 5 yes Figure 4 A partial enlarged view of point Ⅰ in the middle.

[0046] Figure 6 It is a schematic diagram of the highly overlapping area between the flange and the second annular boss in the utility model.

[0047] Figure 7 yes Figure 4 A partial enlarged view of point II in the middle.

[0048] Figure 8 This is a cross-sectional view of a bone conduction earphone head in an embodiment of the present invention. In the figure, the bone conduction earphone head comprises a first shell and a second shell, and the second shell is in a plate shape.

[0049] Fig. 9This is a cross-sectional view of a bone conduction earphone head in an embodiment of the present invention. In the figure, the bone conduction earphone head includes a first shell and a second shell, and the second shell includes a second tube portion.

[0050] Fig.10 It is a schematic diagram of a bone conduction headset according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood 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 structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0053] 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.

[0054] like Figures 1 to 6 As shown, a bone conduction earphone head corresponding to a preferred embodiment of the present invention includes a first shell 1 and a second shell 2.

[0055] The first shell 1 includes a tubular first tube portion 10. The thickness of different positions of the first tube portion 10 may be the same or different. In addition, the outer diameter and inner diameter of different parts of the first tube portion 10 may be the same or different. For example, the first tube portion 10 may be a structure with one end larger than the other, or a structure with one end having a larger thickness and the other end having a thinner thickness.

[0056] The second shell 2 is provided with a second end face 21 facing the first tube portion 10, and the first tube portion 10 is provided with a first end face 11 facing the second shell 2, and the first end face 11 abuts against the second end face 21; optionally, the first end face 11 and the second end face 21 fit each other, thereby improving the sealing performance of the first shell 1 and the second shell 2 after connection by surface fitting.

[0057] One of the first end face 11 and the second end face 21 is provided with an annular glue groove 100, and the other is provided with an annular flange 200 extending into the glue groove 100, and there is a gap 3 between the glue groove 100 and the flange 200, and the gap 3 is filled with glue; when the first shell 1 and the second shell 2 are installed, the part of the flange 200 extending into the glue groove 100 is wrapped by glue, and when the glue solidifies, the first shell 1 and the second shell 2 are fixed to each other, and the gap 3 at the connection between the first shell 1 and the second shell 2 is sealed by glue.

[0058] It is understandable that the glue groove 100 can be provided on the first end surface 11 or the second end surface 21. In the embodiment shown in the figure of the present application, the glue groove 100 is provided on the first end surface 11 of the first shell 1, and the second end surface 21 of the second shell 2 is provided with an annular flange 200 extending into the glue groove 100. It is understandable that in other embodiments, the glue groove 100 can also be provided on the second shell 2, and the flange 200 can be provided on the first shell 1.

[0059] When the first shell 1 and the second shell 2 are connected, the flange 200 extends into the glue groove 100, and glue can be filled in the glue groove 100 and / or glue can be applied to the outer surface of the flange 200, so that after the flange 200 extends into the glue groove 100, the gap between the two is filled with glue. When the glue solidifies, the glue connects and fixes the first shell 1 and the second shell 2. On the one hand, since the surface area of ​​the position where the flange 200 and the glue groove 100 are connected to the glue is larger, the connection strength between the first shell 1 and the second shell 2 is greater. On the other hand, the gap 3 between the first shell 1 and the second shell 2 is sealed by glue, which effectively improves the sealing effect of the connection between the shells, thereby helping to improve the overall waterproof effect of the bone conduction earphone head.

[0060] The thickness of the flange 200 gradually increases toward the end surface where the flange 200 is located. Figure 5 As shown, the end surface where the flange 200 is located is the second end surface 21, and the thickness of the flange 200 refers to the wall thickness of the flange 200 in the X-axis direction.

[0061] When the flange 200 is assembled into the glue groove 100, the glue is squeezed and rises toward the two sides of the flange 200, filling the gap 3 between the glue groove 100 and the flange 200. The conical flange 200 can reduce the resistance of the glue during assembly and guide the first shell 1 and the second shell 2 to be assembled together, which facilitates the installation of the first shell 1 and the second shell 2 and improves the sealing of the first shell 1 and the second shell 2 after connection, thereby improving the waterproof effect of the bone conduction earphones.

[0062] The width of the flange 200 needs to meet certain strength and thickness requirements. A thickness that is too small will result in weak strength, which will be difficult to manufacture and produce with a low yield rate. Although an excessively large width ensures strength, the large size will increase the volume of the entire shell, which is not conducive to product miniaturization and compactness, and will increase the overall product weight, affecting the wearing comfort of the product. Optionally, the width A of the narrowest part of the flange 200 ranges from 0.2 to 1 mm. It is understandable that when the flange 200 is configured to gradually reduce its wall thickness, the narrowest part of the flange 200 is located at its head.

[0063] Furthermore, the narrowest width of the flange 200 is in the range of 0.3-0.6 mm, for example, 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm, etc. This is beneficial for ensuring the strength of the flange 200 while keeping the housing within a suitable size range, and also facilitates guiding the housing to be assembled together.

[0064] As a feasible implementation method, Figure 3 and Figure 4 As shown, the cross section of the flange 200 is trapezoidal, the width D of the bottom of the flange 200 is 0.4 mm (ie, the width of the widest part of the flange 200 ), and the width of the head of the flange 200 is 0.31 mm (ie, the width A of the narrowest part of the flange 200 ).

[0065] The width of the glue groove 100 gradually increases toward the end surface (ie, the second end surface 21 shown in the figure) where the flange 200 is located, and the bottom width B of the glue groove 100 is greater than the width A of the narrowest part of the flange 200 .

[0066] Figure 4 and Figure 5 In the illustrated embodiment, the end face where the flange 200 is located is the second end face 21, and the width of the glue groove 100 and the width of the flange 200 are the dimensions in the X-axis direction; since the bottom width B of the glue groove 100 is greater than the width A of the narrowest part of the flange 200, and the glue groove 100 is in a shape of a small bottom and a large mouth, the spacing between the glue groove 100 and the flange 200 on both sides is more uniform, and the glue can be evenly filled to ensure sealing, while improving the reliability of the connection.

[0067] In some embodiments, the difference between the bottom width B of the glue groove 100 and the width A at the narrowest part of the flange 200 is in the range of 0.08~0.2mm. If the difference is too small, the amount of glue contained in the gap 3 is too small, which is not conducive to ensuring the sealing and connection strength. If the difference is too large, it is not conducive to the glue to be fully filled in the gap 3, and the amount of glue required is large. In addition, if the difference is too large, the shell wall thickness will increase, so that the product volume will become larger and the weight will become heavier, affecting the user's wearing experience. By setting the difference to 0.08~0.2mm, it is conducive to ensuring the connection strength and sealing effect. Optionally, the difference between the bottom width B of the glue groove 100 and the width A at the narrowest part of the flange 200 is in the range of 0.11~0.17mm. To further ensure the connection strength and sealing effect. As a feasible implementation method, the bottom width of the glue groove 100 is 0.5mm, and the width of the narrowest part of the flange 200 is 0.31mm.

[0068] In some embodiments, the height C of the flange 200 ranges from 0.2 to 1.8 mm. The greater the height of the flange 200, on the one hand, the greater the surface area in contact with the glue, and the deeper the glue groove 100, the greater the surface area in contact with the glue and the more glue stored in the glue groove, which is beneficial to improving the connection strength and waterproof sealing between the shells. On the other hand, the distance for the external liquid to invade the interior of the shell is longer, which is beneficial to improving the sealing. However, too large a height C may also lead to uneven filling of the glue and excessive height and size of the shell, which ultimately leads to an increase in product volume and weight, affecting the wearing experience. Further optionally, the height C of the flange 200 ranges from 0.4 to 1.5 mm, which is beneficial to ensure the connection strength and sealing, and prevents the shell size from being too large. Further optionally, the height C of the flange 200 ranges from 0.6 to 1.2 mm, for example, it can be 0.6 mm, 0.75 mm or 1.2 mm, etc., and its size range is more reasonable.

[0069] like Figures 2 to 5 As shown, the shell provided with a glue groove 100 includes a first annular boss 12 located on the outside of the glue groove 100 and a second annular boss 13 located on the inside of the glue groove 100, and the glue groove 100 is formed between the first annular boss 12 and the second annular boss 13; the first annular boss 12 abuts against the end face provided with the flange 200, and the end face of the first annular boss 12 is the end face provided with the glue groove 100, and the second annular boss 13 does not abut against the end face provided with the flange 200.

[0070] Furthermore, the height of the second annular boss 13 is smaller than the height of the flange 200 and the first annular boss 12, and in the protruding direction of the second annular boss 13, there is a gap between the second annular boss 13 and the housing (i.e., the second housing 2) provided with the flange 200. Figure 4 and Figure 5As shown, the protruding direction of the second annular boss 13 is consistent with the vibration axis S of the bone conduction earphone head. Since there is a gap between the second annular boss 13 and the second end face 21, and the first annular boss 12 abuts against the second end face 21, during the process of inserting the flange 200 into the glue groove 100, the first annular boss 12 and the second end face 21 are conducive to sealing the glue and preventing the glue from overflowing from the connection between the two, thereby ensuring the aesthetic appearance, while the glue can overflow from the gap between the second annular boss 13 and the second end face 21, thereby reducing the resistance during assembly and facilitating assembly.

[0071] like Figure 5 As shown, the first shell 1 is provided with a first annular boss 12 and a second annular boss 13. The height H1 of the first annular boss 12 in the thickness direction of the bone conduction earphone head (i.e., the Y-axis direction, which is consistent with the direction of the vibration axis S shown in the figure) is greater than the height H2 of the second annular boss 13 in the thickness direction of the bone conduction earphone head. The first annular boss 12 abuts against the second end face 21, and the second annular boss 13 does not abut against the second end face 21, which is equivalent to the second end face 21, the flange 200, the first annular boss 12 and the second annular boss 13 forming a channel with one end open, and the open end faces the inner cavity of the bone conduction earphone head. When the flange 200 extends into the glue groove 100, the glue is more inclined to overflow toward the inner cavity of the bone conduction earphone head, reducing the risk of poor appearance caused by the glue overflowing from the outside of the bone conduction earphone head, and improving the production yield. It can be understood that Figure 5 In the illustrated embodiment, the second end face 21 extends to the inner side of the flange 200, that is, the surface 21a located on the inner side of the flange 200 is flush with the second end face 21. In other embodiments, the surface 21a located on the inner side of the flange 200 may also be higher or lower than the second end face 21, and may be parallel or non-parallel to the second end face 21.

[0072] The width B at the bottom of the glue groove 100 is greater than the minimum width G of the second annular boss 13. The numerical value of the width B determines the amount of glue stored in the bottom sealing glue, and the width G is related to the side wall of the glue groove. By setting the bottom of the glue groove 100 to be larger than the minimum width G of the second annular boss 13, the width B can be made as large as possible, and the amount of glue stored after the glue is poured in can be guaranteed to ensure a waterproof seal. The smaller the minimum width G is while ensuring smooth molding, the overall shell wall thickness can be minimized. Otherwise, although a width G that is too large is easy to mold, it will cause the shell volume to be large, the final product weight to be heavy, and the wearing experience to be poor. Therefore, by setting the width B at the bottom of the glue groove 100 to be larger than the minimum width G of the second annular boss 13, the shell wall thickness can be minimized while ensuring a waterproof seal.

[0073] In some embodiments, the cross-sectional shape of the glue groove 100 is roughly trapezoidal, and the glue groove 100 includes a bottom wall 1000 and an outer wall 1001 and an inner wall 1002 connected to the bottom wall 1000, the outer wall 1001 is located outside the flange 200, and the inner wall 1002 is located inside the flange 200; there are gaps between the flange 200 and the bottom wall 1000, the outer wall 1001 and the inner wall 1002, so that there is glue on the three surfaces between the flange 200 and the glue groove 100, and the contact area with the glue is larger, which is beneficial to improve the sealing and connection strength of the connection between the first shell 1 and the second shell 2.

[0074] In some embodiments, the minimum gap between the flange 200 and the outer wall 1001 is smaller than the minimum gap between the flange 200 and the inner wall 1002. When the flange 200 is installed in the glue groove 100, the glue tends to overflow toward the wider gap located on the inner side of the flange 200, thereby effectively preventing the glue from overflowing to the outside of the shell.

[0075] In some embodiments, the spacing K between the flange 200 and the bottom wall 1000 ranges from 0.03 to 0.5 mm; the spacing E between the flange 200 and the outer side wall 1001 ranges from 0.02 to 0.15 mm; and the spacing F between the flange 200 and the inner side wall 1002 ranges from 0.05 to 0.3 mm. The spacing E plays a role in pre-fixing of the assembly. When the spacing E value is very small, the manufacturing error may cause interference between the two matching shells, affecting the product manufacturing yield. When the spacing E value is too large, the gap between the two shells will be too large, thereby losing the pre-positioning function. The size of the spacing F determines the amount of glue stored on the side, thereby affecting the sealing effect. When the product is assembled, the glue is set in the glue groove 100 by the glue dispenser. When the first shell 1 and the second shell 2 are assembled together, the glue will enter the gap formed by the side of the flange 200 and the glue groove 100 under pressure, and a sealed space is formed at the bottom of the glue groove 100 and the two side spaces of the flange 200, thereby ensuring the waterproof effect. When the value of spacing F is too small, the corresponding amount of glue stored will also become smaller, which may cause waterproof failure. When the value of spacing F is too large, although the amount of glue stored on the side is sufficient, the thickness of the shell is also increased, resulting in a large volume and weight of the product, affecting the user's wearing experience. Spacing K is related to the amount of glue stored at the bottom of the glue groove 100. If spacing K is too small, the amount of glue stored on the bottom may be too little and affect the sealing. If spacing K is too large, the shell thickness will be too large, affecting the user experience. By limiting the range of spacing K, spacing E and spacing F, it is beneficial to ensure the sealing and connection strength while preventing the volume and weight of the product from being too large, and providing a better wearing experience.

[0076] Further optionally, the distance K between the flange 200 and the bottom wall 1000 ranges from 0.06 to 0.35 mm; the distance E between the flange 200 and the outer wall 1001 ranges from 0.04 to 0.1 mm; and the distance F between the flange 200 and the inner wall 1002 ranges from 0.08 to 0.2 mm.

[0077] Further optionally, the distance K between the flange 200 and the bottom wall 1000 ranges from 0.08 to 0.25 mm, for example, may be 0.08 mm, 0.15 mm or 0.2 mm.

[0078] Optionally, the distance between the flange 200 and the bottom wall 1000 is equal in width, and the distance K can be, for example, 0.08 mm, 0.15 mm, 0.2 mm, or 0.25 mm. The distance between the flange 200 and the outer side wall 1001 is equal in width, and the distance E can be, for example, 0.04 mm, 0.05 mm, 0.07 mm, or 0.1 mm. The distance between the flange 200 and the inner side wall 1002 is equal in width, and the distance F can be, for example, 0.08 mm, 0.1 mm, 0.15 mm, or 0.2 mm.

[0079] Along the protruding direction of the flange 200 (in the illustrated embodiment, the protruding direction is consistent with the vibration axis S of the bone conduction earphone head), the flange 200 and the second annular boss 13 have a highly overlapped area 13a. Figure 6 The approximate part of the highly overlapped area 13a is shown by the section line, and the height H3 of the overlapped area 13a is less than the height H2 of the second annular boss 13. Optionally, the height H3 of the overlapped area 13a ranges from 0.15 to 0.8 mm. Further optionally, the height H3 of the overlapped area 13a ranges from 0.2 to 0.5 mm, for example, it can be 0.2 mm, 0.35 mm or 0.5 mm. The numerical value of the overlapped area 13a is closely related to the amount of glue stored in the height direction of the flange 200 and the sealing length to prevent external liquid from invading. When this value is too low, the amount of glue stored in the height direction of the flange 200 and the length of the glue seal will become smaller, which is easy to cause waterproof failure. When this value is too large, the amount of glue stored in the height direction of the flange 200 and the length of the glue seal can be guaranteed, but at this time the height of the shell is very high, the volume will be large, and the weight of the product will also increase accordingly, causing the user to feel that the earphone is too heavy when wearing it, affecting the wearing experience. Therefore, choosing the appropriate value range can ensure waterproof sealing while keeping the earphones in a moderate size, thereby enhancing the user experience.

[0080] The bone conduction earphone head can be formed by connecting two shells or three shells or more shells, and two adjacent shells can be connected using the connection structure described above.

[0081] In some embodiments, Figure 8 and Fig. 9 As shown, the first housing 1 is provided with a first plate portion 14 sealing an open end of the first pipe portion 10, and the first plate portion 14 is located at the opposite end of the first end surface 11. The second housing 2 seals the opening of the end of the first pipe portion 10 connected thereto. Figure 8 In the illustrated embodiment, the second shell 2 is plate-shaped, and the end surface of the second shell 2 facing the first shell 1 is the second end surface 21 . Fig. 9 In the illustrated embodiment, the second shell 2 includes a second tube portion 20 and a second plate portion 22 sealing an open end of the second tube portion 20, a second end face 21 is disposed on the second tube portion 20, the second plate portion 22 is located at an opposite end of the second end face 21, and the second end face 21 is in contact with the first end face 11.

[0082] In some embodiments, Figures 1 to 7 As shown, the bone conduction earphone head also includes a third shell 4, the first shell 1 is connected between the second shell 2 and the third shell 4, and the second shell 2 and the third shell 4 respectively seal the two open ends of the first tube 10.

[0083] The first tube portion 10 is provided with a third end face 23 facing the third housing 4, and the third housing 4 is provided with a fourth end face 41 facing the first tube portion 10; optionally, the third end face 23 is in contact with the fourth end face 41. One of the third end face 23 and the fourth end face 41 is provided with an annular glue groove 100, and the other is provided with an annular flange 200 extending into the glue groove 100, and a gap 3 is provided between the glue groove 100 and the flange 200, and the gap 3 is filled with glue. Figure 7 In the illustrated embodiment, a glue groove 100 is provided on the third end surface 23 of the first shell 1 , and a flange 200 is provided on the fourth end surface 41 of the third shell 4 .

[0084] like Figure 4 As shown, the bone conduction earphone head also includes a vibrator 80 and a circuit board 81. The first shell 1, the second shell 2 and the third shell 4 are connected to each other to form an inner cavity 82, and the vibrator 80 and the circuit board 81 are placed in the inner cavity 82. The third shell 4 is in contact with the human body, and the vibrator 80 is connected to the third shell 4. The circuit board 81 is arranged on the first shell 1, between the second shell 2 and the vibrator 80.

[0085] The utility model also provides a bone conduction earphone, which comprises the bone conduction earphone head mentioned above.

[0086] like Figure 8 As shown, in some embodiments, the bone conduction earphone includes two bone conduction earphone heads 52 as described above, a battery compartment 50, a control compartment 51, a first ear hook 60 connected between the bone conduction earphone head and the battery compartment 50, a second ear hook 61 connected between the other bone conduction earphone head and the control compartment 51, and a back hook 7 connected between the battery compartment 50 and the control compartment 51.

[0087] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A bone conduction earphone head, characterized in that: include: A first shell (1) comprising a first tube portion (10); The second shell (2) is provided with a second end surface (21) facing the first tube portion (10); the first tube portion (10) is provided with a first end surface (11) facing the second shell (2); the first end surface (11) abuts against the second end surface (21); One of the first end surface (11) and the second end surface (21) is provided with an annular glue groove (100), and the other is provided with an annular flange (200) extending into the glue groove (100), a gap (3) is provided between the glue groove (100) and the flange (200), and the gap (3) is filled with glue; The height of the flange (200) ranges from 0.2 to 1.8 mm.

2. The bone conduction earphone headphone according to claim 1, characterized in that: The thickness of the flange (200) gradually increases towards the end surface where the flange (200) is located, and the width of the flange (200) at its narrowest point ranges from 0.2 to 1 mm.

3. The bone conduction earphone headphone according to claim 2, characterized in that: The width of the flange (200) at its narrowest point ranges from 0.3 to 0.6 mm.

4. The bone conduction earphone headphone according to claim 2, characterized in that: The width of the glue groove (100) gradually increases toward the end surface where the flange (200) is located, the bottom width of the glue groove (100) is greater than the width of the narrowest part of the flange (200), and the difference between the bottom width of the glue groove (100) and the width of the narrowest part of the flange (200) is in the range of 0.08-0.2 mm.

5. The bone conduction earphone headphone according to claim 4, characterized in that: The difference between the bottom width of the glue groove (100) and the width of the narrowest part of the flange (200) is in the range of 0.11 to 0.17 mm.

6. The bone conduction earphone headphone according to claim 1, characterized in that: The height of the flange (200) ranges from 0.4 to 1.5 mm.

7. The bone conduction earphone headphone according to claim 6, characterized in that: The height of the flange (200) ranges from 0.6 to 1.2 mm.

8. The bone conduction earphone according to any one of claims 1 to 7, characterized in that: The housing provided with the glue groove (100) comprises a first annular boss (12) located outside the glue groove (100) and a second annular boss (13) located inside the glue groove (100), and the glue groove (100) is formed between the first annular boss (12) and the second annular boss (13); The first annular boss (12) abuts against an end face provided with the flange (200); the end face of the first annular boss (12) is the end face provided with the glue groove (100); and the second annular boss (13) does not abut against the end face provided with the flange (200).

9. The bone conduction earphone headphone according to claim 8, characterized in that: The height of the second annular boss (13) is smaller than the heights of the flange (200) and the first annular boss (12), and in the protruding direction of the second annular boss (13), there is a gap between the second annular boss (13) and the shell provided with the flange (200).

10. The bone conduction earphone headphone according to claim 8, characterized in that: The width of the bottom of the glue groove (100) is greater than the minimum width of the second annular boss (13).

11. The bone conduction earphone headphone according to claim 8, characterized in that: Along the protruding direction of the flange (200), the flange (200) and the second annular boss (13) have a highly overlapping area (13a), the height of the overlapping area (13a) is less than the height of the second annular boss (13), and the height range of the overlapping area (13a) is 0.15-0.8 mm.

12. The bone conduction earphone headphone according to claim 11, characterized in that: The height range of the overlapping area is 0.2-0.5 mm.

13. The bone conduction earphone according to any one of claims 1 to 7, characterized in that: The glue groove (100) comprises a bottom wall (1000) and an outer wall (1001) and an inner wall (1002) connected to the bottom wall (1000), wherein the outer wall (1001) is located outside the flange (200), and the inner wall (1002) is located inside the flange (200); There are gaps between the flange (200) and the bottom wall (1000), the outer wall (1001), and the inner wall (1002).

14. The bone conduction earphone headphone according to claim 13, characterized in that: The minimum gap between the flange (200) and the outer side wall (1001) is smaller than the minimum gap between the flange (200) and the inner side wall (1002).

15. The bone conduction earphone headphone according to claim 14, characterized in that: The distance between the flange (200) and the bottom wall (1000) ranges from 0.03 to 0.5 mm; The distance between the flange (200) and the outer side wall (1001) ranges from 0.02 to 0.15 mm; The distance between the flange (200) and the inner side wall (1002) ranges from 0.05 to 0.3 mm.

16. The bone conduction earphone headphone according to claim 15, characterized in that: The distance between the flange (200) and the bottom wall (1000) ranges from 0.06 to 0.35 mm; The distance between the flange (200) and the outer side wall (1001) ranges from 0.04 to 0.1 mm; The distance between the flange (200) and the inner wall (1002) ranges from 0.08 to 0.2 mm.

17. The bone conduction earphone headphone according to claim 16, characterized in that: The distance between the flange (200) and the bottom wall (1000) ranges from 0.08 to 0.25 mm.

18. The bone conduction earphone according to any one of claims 1 to 7, characterized in that: The first shell (1) is provided with a first plate portion (14) for sealing an open end of the first tube portion (10), and the first plate portion (14) is located at an end opposite to the first end surface (11); The second shell (2) seals the opening of the end portion of the first tube (10) connected thereto, and the second shell (2) is in the shape of a plate; or the second shell (2) comprises a second tube (20) and a second plate portion (22) sealing an open end of the second tube (20), the second end surface (21) being arranged on the second tube (20), the second plate portion (22) being located at an end opposite to the second end surface (21), and the second end surface (21) and the first end surface (11) being in contact with each other.

19. The bone conduction earphone according to any one of claims 1 to 7, characterized in that: It also includes a third shell (4), the first shell (1) is connected between the second shell (2) and the third shell (4), and the second shell (2) and the third shell (4) respectively seal the two open ends of the first tube part (10); The first tube portion (10) is provided with a third end surface (23) facing the third shell (4), and the third shell (4) is provided with a fourth end surface (41) facing the first tube portion (10), and the third end surface (23) is in contact with the fourth end surface (41); One of the third end surface (23) and the fourth end surface (41) is provided with an annular glue groove (100), and the other is provided with an annular flange (200) extending into the glue groove (100), a gap (3) is provided between the glue groove (100) and the flange (200), and the gap (3) is filled with glue.

20. A bone conduction headset, characterized in that: Comprising the bone conduction earphone head as claimed in any one of claims 1 to 19.

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