Bone conduction earphone

Abstract

The utility model discloses a bone conduction earphone, which relates to the technical field of earphones and comprises an earphone head and an ear hook. The earphone head comprises a shell assembly; the ear hook comprises a connecting ring wrapping the outer portion of the shell assembly, and the connecting ring is in a ring shape surrounding the outer portion of the shell assembly in a whole circle. The tubular connecting ring is connected with the shell assembly, the contact area between the connecting ring and the shell assembly is increased, the earphone head is not prone to falling off from the ear hook even if the earphone head is pulled due to the annular connecting mode, the connecting strength of the ear hook and the earphone head is improved, and in addition, due to the fact that a plug-in structure is not needed, the earphone head is not prone to falling off. And external liquid is not easy to invade from the joint of the ear hook and the earphone head, so that the waterproof effect can be effectively improved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202420389753.5, filed on February 29, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The utility model relates to earphone technical field, especially relate to a bone conduction earphone. BACKGROUND

[0003] The bone conduction earphone usually includes two bone conduction earphone heads, two function warehouses, a rear hanging connected between the two warehouses and an ear hanging connected between the bone conduction earphone head and the warehouse. The two warehouses usually have different functions, for example, one is a control warehouse mainly used for control, and the other is a battery warehouse mainly used for placing a battery.

[0004] For example, the bone conduction earphone head and the bone conduction earphone disclosed in Chinese Patent Application No. 202221455611.1, in the prior art, the ear hanging and the earphone head are usually connected by a plug-in structure, and are simultaneously sealed by glue.

[0005] The above-mentioned connecting structure is relatively cumbersome to assemble, and requires operations such as plugging and gluing. In addition, the waterproofness of the connection after assembly needs to be considered, and when the earphone head is pulled, gaps may be generated at the plugged position, affecting the waterproofness.

[0006] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. SUMMARY

[0007] The utility model aims at providing a bone conduction earphone, which has better sealing at the connection between the ear hanging and the bone conduction earphone head.

[0008] To achieve the above-mentioned utility model purposes, the utility model provides a bone conduction earphone, which includes:

[0009] The earphone head includes a shell assembly; and

[0010] The ear hanging includes a connecting ring wrapped outside the shell assembly, and the connecting ring is annular outside the shell assembly.

[0011] Further, the shell assembly is provided with an annular groove, and the connecting ring is embedded in the annular groove.

[0012] Further, the shell assembly includes a contact surface for contacting the skin of the face when the bone conduction earphone is worn, a back surface facing away from the face, and a peripheral surface between the contact surface and the back surface, and the connecting ring is correspondingly arranged with the peripheral surface.

[0013] Further, the connecting ring is injection molded or molded into the annular groove.

[0014] Further, the bottom surface of the annular groove is provided with a first concave sub-groove, and the connecting ring is provided with a first embedded part embedded in the first sub-groove; and / or,

[0015] The inner surface of the connecting ring is provided with a second concave sub-groove, and the shell assembly is provided with a second embedded part embedded in the second sub-groove.

[0016] Further, the first sub-groove and the second embedded part are respectively located at both ends of the annular groove.

[0017] Further, the ratio of the width of the connecting ring to the thickness of the shell assembly ranges from 0.2 to 0.8.

[0018] Further, the shell assembly comprises a front cover, a back cover, and a tubular middle shell connected between the front cover and the back cover, and the connecting ring is wrapped on the outer surface of the middle shell and covers the joint between the front cover, the back cover and the middle shell.

[0019] Further, the middle shell is recessed into the front cover and the back cover, and the annular groove accommodating the connecting ring is formed between the front cover, the back cover and the middle shell.

[0020] Further, the middle shell further comprises an outward convex connecting part, the ear hook is internally provided with an elastic metal wire and a wire, one end of the elastic metal wire is connected with the connecting part, and one end of the wire extends into the shell assembly from the connecting part, and the ear hook simultaneously wraps the connecting part.

[0021] Further, the bone conduction earphone further comprises a warehouse body, and the ear hook comprises a wrapping body wrapped on the outside of the warehouse body and an arc-shaped body connected between the wrapping body and the connecting ring.

[0022] Further, the warehouse body comprises a main body and first and second corner parts protruding from the end of the main body close to the shell assembly, the first and second corner parts respectively extend obliquely upward and obliquely downward toward the side where the shell assembly is located, the ear hook is internally provided with an elastic metal wire and a wire, one end of the elastic metal wire is connected with the first corner part, and one end of the wire extends into the warehouse body from the first corner part, the wrapping body wraps the first and second corner parts, and the arc-shaped body is correspondingly arranged with the first corner part.

[0023] Further, the wrapping body is partially embedded in the warehouse body.

[0024] The warehouse body is provided with an embedded groove, and the wrapping body is arranged in the embedded groove.

[0025] Further, the covering body comprises a first covering sleeve covering the first corner portion, a second covering sleeve covering the second corner portion and a piece extending to the outer surface of the body towards the outside when the bone conduction earphone is worn.

[0026] Further, the second corner portion is provided with a boss, and the covering body covers the boss.

[0027] The bottom surface of the embedding groove is provided with a groove, and the piece comprises an embedded block embedded into the groove.

[0028] Further, the body is in a strip shape, the piece extends along the length direction of the body and extends to at least more than half of the length of the cartridge body.

[0029] Compared with the prior art, the utility model has the beneficial effects that:

[0030] In the application, the ear hook comprises a connecting ring covered outside the shell assembly of the earphone head, and the connecting ring is connected with the shell assembly in a ring shape, which is beneficial to increase the contact area between the ear hook and the shell assembly, improve the connecting strength of the ear hook and the earphone head, and effectively improve the waterproof effect without using a plug-in structure, so that external liquid cannot easily enter the joint between the ear hook and the earphone head. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a three-dimensional schematic view of a bone conduction earphone in an embodiment of the utility model.

[0032] Figure 2 is a three-dimensional schematic view of the ear hook and the cartridge body and the earphone head connected with each other in an embodiment of the utility model.

[0033] Figure 3 is a structural schematic view of the earphone head in an embodiment of the utility model.

[0034] Figure 4 is a sectional view of the earphone head and the connecting ring in an embodiment of the utility model.

[0035] Figure 5 is a sectional view of the earphone head in an embodiment of the utility model.

[0036] Figure 6 is a structural schematic view of the ear hook in an embodiment of the utility model.

[0037] Figure 7 is Figure 5 is an enlarged view of the I part.

[0038] Figure 8 is Figure 5is an enlarged view of part II in the utility model.

[0039] Figure 9 is an exploded view of the ear hook and the cartridge body of an embodiment in the utility model.

[0040] Figure 10 is a position schematic view of the elastic metal wire, the lead wire and the cartridge body, the shell assembly of an embodiment in the utility model.

[0041] Figure 11 is a schematic view of the cartridge body of an embodiment in the utility model.

[0042] Figure 12 is a schematic view of the ear hook and the cartridge body, the earphone head connected of an embodiment in the utility model.

[0043] Figure 13 is along Figure 11 the section view along the B-B section line in the utility model.

[0044] Figure 14 is along Figure 11 the section view along the C-C section line in the utility model.

[0045] Figure 15 is the enlarged view of part III in the utility model. Figure 14

[0046] Figure 16 is a perspective view of the cartridge body of an embodiment in the utility model.

[0047] Figure 17 is the section view of the ear hook and the cartridge body, the earphone head connected of an embodiment in the utility model. DETAILED DESCRIPTION

[0048] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0049] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, the process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. ​

[0050] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all

[0051] As shown in the drawings, Figures 1 to 17 The application provides a bone conduction earphone, which comprises an earphone head 1 and an ear hook 2.

[0052] The earphone head 1 comprises a shell assembly 10, and the ear hook 2 comprises a connecting ring 20 which is wrapped outside the shell assembly 10. The connecting ring 20 is connected to the shell assembly 10 in a tubular manner, which is conducive to increasing the contact area between the connecting ring 20 and the shell assembly 10, thereby improving the connection strength of the ear hook 2 and the earphone head 1. In addition, since no plug-in structure is used, external liquid is less likely to enter from the joint between the ear hook and the earphone head, so that the waterproof effect can be effectively improved, and the sealing performance of the joint between the ear hook 2 and the earphone head 1 is enhanced.

[0053] The shell assembly 10 comprises a contact surface 10a for contacting the skin of the human face when the bone conduction earphone is worn, a back surface 10b facing away from the face, and an outer peripheral surface 10c between the contact surface 10a and the back surface 10b. The connecting ring 20 is arranged on the outer peripheral surface 10c and corresponds to the outer peripheral surface 10c. In this way, the connecting ring 20 does not block the contact surface 10a, and the earphone head 1 can conveniently transmit vibrations to the skin of the human face. Further, since the connecting ring 20 encloses the shell assembly 10 in a ring shape, the earphone head 1 is less likely to fall off the ear hook 2 even if it is pulled, thereby effectively improving the reliability of the connection between the ear hook 2 and the earphone head 1. In addition, mechanical buttons (push buttons), pressure-sensitive buttons, or devices such as indicator lights can be arranged at a position corresponding to the back surface 10b of the earphone head 1. The connecting ring 20 does not block the back surface 10b and does not interfere with the arrangement and normal use of these devices.

[0054] In some embodiments, an annular groove 100 is arranged on the outer periphery of the shell assembly 10, Figure 4 and Figure 5 In the embodiment shown, the annular groove 100 is arranged on the outer peripheral surface 10c, and the connecting ring 20 is embedded in the annular groove 100. Since the connecting ring 20 is embedded in the annular groove 100, the connecting ring 20 can be limited by the annular groove 100 to prevent it from coming off the annular groove 100, thereby further improving the reliability of the connection between the connecting ring 20 and the shell assembly 10. Optionally, the outer surface of the connecting ring 20 and the shell assembly 10 located outside the annular groove 100 is flush, so as to improve the appearance and comfort of the product.

[0055] The ear hook 2 can be formed together with the shell assembly 10 by injection molding, for example, the shell assembly 10 is placed in a mold, and then the ear hook 2 is injection molded outside the shell assembly 10, at this time, the connecting ring 20 is formed in the annular groove 100 by injection molding. The material of the ear hook 2 can be, for example, silica gel. It can be understood that the ear hook 2 can also be formed together with the shell assembly 10 by other ways, for example, by molding, at this time, the connecting ring 20 is formed in the annular groove 100 by molding.

[0056] Optionally, the axis of the connecting ring 20 is parallel to the vibration direction of the earphone head 1, and the earphone head 1 is provided with a vibration device 12, and the vibration direction of the earphone head 1 is the vibration direction S of the vibration device 12.

[0057] In some embodiments, the connecting ring 20 and the shell assembly 10 are staggered to improve the connection effect between the connecting ring 20 and the shell assembly 10. Optionally, the connecting ring 20 is partially embedded in the groove bottom surface 1000 and / or the shell assembly 10 is partially embedded in the connecting ring 20. As shown in Figure 7 and Figure 8 The groove bottom surface 1000 of the annular groove 100 is provided with a first sub-groove 1001, the connecting ring 20 is provided with a first embedded part 200 embedded in the first sub-groove 1001, the inner surface of the connecting ring 20 is provided with a second sub-groove 1002, the shell assembly 10 is provided with a second embedded part 1031 embedded in the second sub-groove 1002, and the first embedded part 200 and the second embedded part 1031 form a stepped structure, which is beneficial to improve the connection strength of the connecting ring 20 and the shell assembly 10 and the limiting effect of the shell assembly 10 on the connecting ring 20. Optionally, the sub-groove 1001 is annular or partially annular.

[0058] Figure 7 and Figure 8 In the embodiment shown, the first sub-groove 1001 and the second embedded part 1031 are respectively located at both ends of the annular groove 100, and the number of each is one. In other embodiments, the number of the first sub-groove 1001 and the second embedded part 1031 can be multiple, and their positions can also be changed.

[0059] The shell assembly 10 is connected by multiple shells, for example, two shells, three shells, or more shells. The connecting ring 20 is arranged to cover the joint between the adjacent two shells to improve the waterproof effect.

[0060] Optionally, referring to Figure 5The ratio of the width B of the connecting ring 20 to the thickness H of the shell assembly 10 is in the range of 0.2 to 0.8, so that the connecting ring 20 has good structural performance and ensures the reliability of the connection with the shell assembly 10. The width B of the connecting ring 20 refers to the width of the narrowest part thereof, and the thickness H of the shell assembly 10 refers to the maximum value of the spacing between the contact surface 10a and the back surface 10b. Further, the ratio of the width B of the connecting ring 20 to the thickness H of the shell assembly 10 is in the range of 0.4 to 0.6, so as to further ensure the reliability of the connection. Optionally, the width B of the connecting ring 20 is in the range of 3.1 mm to 10.2 mm, which is more appropriate in size and is not too narrow or too wide.

[0061] In some embodiments, as shown in Figure 4 and Figure 5 , the shell assembly 10 comprises a front cover 101, a back cover 102, and a middle shell 103 connected between the front cover 101 and the back cover 102. The middle shell 103 is tubular, and its two open ends are covered by the front cover 101 and the back cover 102, respectively. The contact surface 10a and the back surface 10b described above are provided on the front cover 101 and the back cover 102, respectively. The connecting ring 20 is wrapped on the outer surface of the middle shell 103 and covers the joint 104 between the front cover 101, the back cover 102, and the middle shell 103. The middle shell 103 is recessed into the front cover 101 and the back cover 102, and the front cover 101, the back cover 102, and the middle shell 103 form the annular groove 100 described above for accommodating the connecting ring 20, as shown in Figure 7 and Figure 8 , the connecting ring 20 abuts and fits with the first end surface 101a of the front cover 101 and the second end surface 102a of the back cover 102 at the two ends thereof, so as to cover the joint 104.

[0062] The middle shell 103 further comprises a connecting portion 1030 protruding outward from the outer surface thereof, which is optionally extended in a direction perpendicular to the axial direction of the middle shell 103. As shown in Figure 9 and Figure 10 , the ear hook 2 wraps the connecting portion 1030. The ear hook 2 is internally provided with a wire 24 and an elastic metal wire 23. The wire 24 passes through the connecting portion 1030 from the inside of the ear hook 2 to the inside of the shell assembly 10 and is electrically connected to the electrical elements inside the shell assembly 10, Figure 10 shows a case where the first end 24a of the wire 24 is located inside the shell assembly 10. Since the ear hook 2 wraps the connecting portion 1030, the wire 24 is completely wrapped, effectively improving the waterproof effect. One end of the elastic metal wire 23 is arranged in the connecting portion 1030 and connected to the connecting portion 1030. Optionally, the middle shell 103 and the connecting portion 1030 thereof are connected to the end of the elastic metal wire 23 by injection molding.

[0063] Optionally, the first sub-groove 1001 and the second embedding part 1031 are respectively located on the upper and lower sides of the connecting part 1030.

[0064] The material of the elastic metal wire 23 can be a metal element, an alloy material including multiple metal materials, such as an aluminum alloy, a magnesium alloy, a titanium alloy, a spring steel, or the like, or a composite material including a metal material and a non-metal material. Preferably, the material of the elastic metal wire 23 is a titanium wire. The material of the ear hook 2 can be silicone or plastic.

[0065] When the shell assembly 10 is formed by connecting two housings, the annular groove 100 can be arranged on one of the housings or formed by cooperation of the two housings, and the connecting part 1030 is arranged on one of the housings. For example, the middle housing 103 and the back cover 102 or the face cover 101 can be integrally formed.

[0066] As shown in Figure 2 and Figure 9 , the bone conduction earphone further includes a warehouse body 3, and the ear hook 2 includes a cladding body 21 cladded on the outside of the warehouse body 3 and an arc-shaped body 22 connected between the cladding body 21 and the connecting ring 20. The warehouse body 3 is connected by being cladded by the cladding body 21, without being connected by a plug-in structure, so that the structure is simplified, the waterproof performance of the plug-in structure is avoided, and the waterproof effect is improved. The arc-shaped body 22 is used for hooking the ear of a human body when the bone conduction earphone is worn, and can provide a certain elastic force. The warehouse body 3 can be a control warehouse containing a circuit board or a battery warehouse containing a battery, and can also contain a battery and a circuit board at the same time.

[0067] In some embodiments, the cladding body 21 is partially embedded in the warehouse body 3 to improve the connection effect between the ear hook 2 and the warehouse body 3. Further, the arc-shaped body 22 is arranged at the upper end of the warehouse body 3 facing the earphone head 1, and the cladding body 21 clads the lower end of the warehouse body 3 facing the earphone head 1.

[0068] As shown in Figure 9 and Figure 11 , the warehouse body 3 includes a body 30 and a first corner 31 and a second corner 32 protruding from the body 30, and the first corner 31 and the second corner 32 extend in different directions. Optionally, as shown in Figure 10 , the first corner 31 and the second corner 32 are respectively located at the upper end and the lower end of the warehouse body 3 facing the earphone head 1, and respectively extend and protrude obliquely upward and obliquely downward on the side where the shell assembly 10 is located. The cladding body 21 clads the first corner 31 and the second corner 32. Specifically, refer to Figure 11The covering body 21 includes a first covering sleeve 210 covering the first corner 31 and a second covering sleeve 211 covering the second corner 32, so as to improve the connection strength. It should be noted that the second corner 32 is covered by the covering body 21, so that the ear hook 2 and the cartridge body 3 can be effectively prevented from being separated due to pulling.

[0069] As shown in Figure 10 , one end of the elastic wire 23 is arranged in the first corner 31 and connected with the first corner 31. The lead wire 24 extends from the ear hook 2 into the cartridge body 3 through the first corner 31 and is electrically connected with the electrical element in the cartridge body 3. Figure 10 The second end 24b of the lead wire 24 is shown in the cartridge body 3. Since the lead wire 24 is completely covered by the ear hook 2, the cartridge body 3 and the earphone head 1, the overall waterproof effect is better.

[0070] Similarly, the connection of the ear hook 2, the elastic wire 23, the lead wire 24, the cartridge body 3 and the earphone head 1 can be completed by injection molding. For example, in some embodiments, the elastic wire 23 and the lead wire 24 can be first positioned in the mold, and then the shell of the earphone head 1 and the cartridge body 3 is injection molded at both ends of the elastic wire 23 and the lead wire 24. Then the integrally injection molded elastic wire 23, lead wire 24 and shell at both ends are positioned in the mold, and the skin layer covering the elastic wire 23, lead wire 24 and part of the shell is injection molded outside to form the ear hook 2. The precision of the injection molded product is higher than that of the product assembled later, and the consistency is better, which is beneficial to ensure the quality of the product.

[0071] In some embodiments, as shown in Figures 11 to 14 , the cartridge body 3 is provided with an embedding groove 33, and the covering body 21 is arranged in the embedding groove 33 and can be limited by the embedding groove 33. Optionally, the surface of the covering body 21 and the cartridge body 3 outside the embedding groove 33 is smoothly transitioned, so that the appearance of the product is more beautiful and the use is more comfortable. Moreover, the risk of the covering body 21 being accidentally pried open can be reduced.

[0072] In some embodiments, as shown in Figure 16 and Figure 17 , the second corner 32 is provided with a boss 320, and the covering body 21 covers the boss 320, so as to improve the limiting effect. Optionally, the cross section of the boss 320 is non-circular, so as to prevent the covering body 21 from rotating relative to the second corner 32.

[0073] In some embodiments, as shown in Figures 9 to 12As shown, the cladding 21 further comprises a tab 212 extending to the outer surface of the body 30 facing outward when the bone conduction earphone is worn, the tab 212 is attached to the body 30, increasing the contact area between the body 30 and improving the connection strength. Optionally, the body 30 is in a long strip shape, the tab 212 extends along the length direction A of the body 30, and extends to at least more than half of the maximum length L of the cartridge body 3, and further optionally, more than two-thirds of the maximum length L.

[0074] In some embodiments, the groove bottom surface 330 of the embedding groove 33 is provided with a recess 4, and the tab 212 comprises an embedded block 213 embedded into the recess 4, and through the cooperation of the recess 4 and the embedded block 213, the connection force between the cladding 21 and the embedded block 213 can be further improved. Optionally, the recess 4 is a blind hole, which is not connected to the inside of the cartridge body 3.

[0075] In some embodiments, the cartridge body 3 comprises a first shell 34 and a second shell 35 connected to each other, the first shell 34 is open at one end along the thickness direction of the cartridge body 3, and the second shell 35 covers the opening. The first corner 31, the second corner 32 and the embedding groove 33 described above are all arranged on the first shell 34, and are not arranged on the second shell 35, so that when forming, the first shell 34 and the middle shell 103 can be formed at the end of the elastic metal wire 23 and the lead wire 24 first, and then the second shell 35 is covered on the open end of the first shell 34, and the middle shell 103 is connected to the face cover 101 and the back cover 102 at both ends, facilitating assembly.

[0076] Figure 1 The bone conduction earphone shown comprises two earphone heads 1, two ear hooks 2, two cartridge bodies 3 and one rear hook 5, the ear hook 2 is connected between the earphone head 1 and the cartridge body 3, and the rear hook 5 is connected between the two cartridge bodies 3. Optionally, among the two cartridge bodies 3, one is a control cartridge containing a main control circuit board, mainly used for control of the earphone, and the other is a battery cartridge containing a battery 36, mainly used for power supply. It can be understood that in other embodiments, the bone conduction earphone can also be a single-ear earphone, for example, it can only comprise one earphone head 1 and an ear hook 2 or only comprise one earphone head 1, one ear hook 2 and one cartridge body 3, and the connection structure between the earphone head 1 and the ear hook 2 and / or the connection structure between the earphone head 1 and the cartridge body 3 can use the structure described above.

[0077] The above is only a specific implementation of the present application, and any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.

Claims

1. A bone conduction earphone, characterized in that, The earphone head (1) comprises a shell assembly (10); and The earphone head (1) comprises a shell assembly (10); and The shell assembly (10) is provided with an annular groove (100) on the outer periphery, and the connecting ring (20) is embedded in the annular groove (100). The shell assembly (10) comprises a contact surface (10a) for contacting the skin of the face when the bone conduction earphone is worn, a back surface (10b) facing away from the face, and an outer peripheral surface (10c) between the contact surface (10a) and the back surface (10b), and the connecting ring (20) is correspondingly provided on the outer peripheral surface (10c).

2. The bone conduction earpiece of claim 1, wherein The connecting ring (20) is injection molded or molded into the annular groove (100).

3. The bone conduction earpiece of claim 2, wherein The bottom surface of the annular groove (100) is provided with a first sub-groove (1001) recessed inward, and the connecting ring (20) is provided with a first embedding part (200) embedded in the first sub-groove (1001); and / or 4. The bone conduction earpiece of claim 2, wherein The inner surface of the connecting ring (20) is provided with a second sub-groove (1002) recessed inward, and the shell assembly (10) is provided with a second embedding part (1031) embedded in the second sub-groove (1002).

5. The bone conduction earpiece of claim 2, wherein The first sub-groove (1001) and the second embedding part (1031) are respectively located at both ends of the annular groove (100). The ratio of the width of the connecting ring (20) to the thickness of the shell assembly (10) is in the range of 0.2-0.

8.

6. The bone conduction earpiece of claim 5, wherein The shell assembly (10) comprises a face cover (101), a back cover (102), and a tubular middle shell (103) connected between the face cover (101) and the back cover (102), and the connecting ring (20) is wrapped on the outer surface of the middle shell (103) and covers the joint between the face cover (101), the back cover (102) and the middle shell (103).

7. The bone conduction earpiece of claim 1, wherein The middle shell (103) is recessed into the face cover (101) and the back cover (102), and the annular groove (100) accommodating the connecting ring (20) is formed between the face cover (101), the back cover (102) and the middle shell (103).

8. The bone conduction earpiece of claim 1, wherein The middle shell (103) further comprises an outwardly convex connecting part (1030), the ear hook (2) is provided with an elastic wire (23) and a wire (24) inside, one end of the elastic wire (23) is connected to the connecting part (1030), one end of the wire (24) extends into the shell assembly (10) from the connecting part (1030), and the ear hook (2) simultaneously wraps the connecting part (1030).

9. The bone conduction earpiece of claim 8, wherein The bone conduction earphone further comprises a cartridge body (3), and the ear hook (2) comprises a wrapping body (21) wrapped on the outside of the cartridge body (3) and an arc-shaped body (22) connected between the wrapping body (21) and the connecting ring (20).

10. The bone conduction earpiece of claim 8, wherein the at least one bone conduction transducer is positioned on the at least one of the first and second earpieces. ​ 11. The bone conduction earpiece of any one of claims 1 to 10, wherein, ​ 12. The bone conduction earpiece of claim 11, wherein The cartridge body (3) comprises a body (30) and first and second corners (31, 32) protruding from an end of the body (30) close to the shell assembly (10), the first and second corners (31, 32) extending obliquely upward and obliquely downward, respectively, toward the side on which the shell assembly (10) is located, the ear hook (2) is internally provided with an elastic wire (23) and a lead wire (24), one end of the elastic wire (23) is connected to the first corner (31), one end of the lead wire (24) extends into the cartridge body (3) from the first corner (31), the covering body (21) covers the first and second corners (31, 32), and the arc-shaped body (22) is arranged correspondingly to the first corner (31).

13. The bone conduction earpiece of claim 12, wherein the at least one bone conduction transducer is positioned on the at least one of the first and second earpieces. The covering body (21) is partially embedded in the cartridge body (3). The cartridge body (3) is provided with an embedding groove (33), and the covering body (21) is arranged in the embedding groove (33).

14. The bone conduction earpiece of claim 13, wherein the at least one bone conduction transducer is positioned on the at least one of the first and second earpieces. The covering body (21) comprises a first covering sleeve (210) covering the first corner (31), a second covering sleeve (211) covering the second corner (32), and a sheet body (212) extending to an outer surface of the body (30) that faces outward when the bone conduction earphone is worn.

15. The bone conduction earpiece of claim 14, wherein the at least one bone conduction transducer is positioned on the at least one of the first and second earpieces. The second corner (32) is provided with a boss (320), and the covering body (21) covers the boss (320). A groove (4) is arranged on a groove bottom surface of the embedding groove (33), and the sheet body (212) comprises an embedded block (213) embedded in the groove (4).

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