WO2023236737A1 - Bone conduction headphone speaker and bone conduction headphone - Google Patents

Abstract

Disclosed in the present invention are a bone conduction headphone speaker and a bone conduction headphone. The bone conduction headphone speaker comprises a shell, a cover body, a first circuit board, a vibration sound-producing unit and a flexible layer. The shell comprises an accommodating cavity with an opening in one end and a supporting assembly arranged in the accommodating cavity. The cover body is connected to the shell and seals the opening of the accommodating cavity. The first circuit board is arranged in the accommodating cavity and is connected to the shell. The vibration sound-producing unit is arranged between the supporting assembly and the cover body. The flexible layer is clamped between the supporting assembly and the vibration sound-producing unit, and separates the vibration sound-producing unit and the supporting assembly. In the present invention, the flexible layer arranged between the vibration sound-producing unit and the supporting assembly can absorb the vibration transmitted to the shell by the vibration sound-producing unit, thereby reducing the effect of vibration on the circuit board, and reducing sound leakage.

Description

Bone conduction earphone head and bone conduction earphone

Priority information: This application claims priority from Chinese patent application No. 202210656216.8, filed on June 10, 2022.

Technical field

The present invention relates to the field of speaker technology, and in particular to a bone conduction earphone head and a bone conduction earphone.

Background technique

Bone conduction headphones use the principle of bone conduction to make people hear. They include bone conduction headphone heads. The bone conduction headphone heads are in contact with the skin of the human face and generate sound waves through mechanical vibration. The sound waves pass through the skull and cause corresponding fluctuations in the perilymph and excite it. The spiral organ of the cochlea produces hearing.

The bone conduction earphone head is provided with a vibration sounding unit and a circuit board electrically connected to the vibration sounding unit. The circuit board is connected to the control compartment and battery compartment of the bone conduction headset through cables and can supply power to the vibration sounding unit and control its vibration.

The vibration of the vibrating sound unit has an adverse effect on the normal operation of the circuit board. For example, it may cause the solder joints on the circuit board to fall off, resulting in poor contact. The vibrating sound-generating unit in the prior art is in direct contact with the bottom of the casing, and the circuit board installed at the bottom of the casing will be greatly affected. In addition, the vibrating sound-generating unit is in direct contact with the bottom of the casing, which will directly drive the bottom of the casing to vibrate. , which can easily lead to sound leakage problems.

Therefore, it is necessary to improve the prior art to overcome the defects in the prior art.

Contents of the invention

The object of the present invention is to provide a bone conduction earphone head and a bone conduction earphone that can reduce the impact of vibration on the circuit board and reduce sound leakage.

In order to achieve the above-mentioned object of the invention, in the first aspect, the present invention proposes a bone conduction earphone head, including:

The housing includes a receiving cavity with an open end and a support component located in the receiving cavity;

A cover, connected to the housing and sealing the opening of the receiving cavity;

A first circuit board is located in the receiving cavity and connected to the housing;

A vibrating sound unit is provided between the support component and the cover; and,

A flexible layer is sandwiched between the support component and the vibrating sound unit, and separates the vibrating sound unit and the support component.

Further, the housing includes a bottom plate opposite to the opening and a peripheral side plate connected to the outer periphery of the bottom plate, and the support assembly is connected to the bottom plate and/or the peripheral side plate.

Further, the support assembly includes a support column connected to the base plate, and the support column passes through the first circuit board and abuts against the flexible layer.

Further, the support assembly includes a rib connected to the bottom plate and/or the peripheral side plate, the rib extending to above the first circuit board and abutting the flexible layer.

Further, the first circuit board is provided with a micro switch disposed toward the bottom plate, and the bottom plate is provided with a key through hole corresponding to the micro switch. The bone conduction earphone head also includes a Key assembly in key through hole

Further, the key assembly includes an elastic layer connected to the base plate, a contact piece connected to the elastic layer and in contact with the micro switch, and a pressing piece connected to the contact piece, The elastic layer, the contact piece and the pressing piece cooperate to seal the key through hole.

Further, the first circuit board includes a microphone, the housing is provided with a microphone hole corresponding to the microphone, and the bone conduction earphone head further includes a microphone located between the housing and the first circuit board. The sound insulation member is provided with a waterproof breathable membrane corresponding to the microphone hole, and the sound entering through the microphone hole is transmitted to the microphone through the waterproof breathable membrane.

Further, the sound insulating member includes a sound insulating ring that abuts against the first circuit board. The sound insulating ring surrounds the outside of the sound pickup film of the microphone, and the waterproof and breathable film covers the central hole of the sound insulating ring.

Furthermore, the housing is provided with a guide hole communicating with the microphone hole, and the waterproof and breathable film covers the guide hole.

Further, the flexible layer is foam, sponge, EVA, rubber or silicone.

Further, the vibrating sound unit includes an annular shell and a spring piece connected to an end of the shell, and the cover includes a convex ring surrounding the end of the shell and an escape cavity to avoid vibration of the spring piece.

Further, the vibrating sound unit further includes an end plate connected to the housing and a second circuit board connected to the end plate. The end plate and the elastic piece are connected to both ends of the housing respectively. The second circuit board is located outside the housing, and the flexible layer is provided with escape holes to avoid the pads on the second circuit board.

Further, the elastic piece includes an outer bracket connected to the end surface of the housing, a central body located in the outer bracket, and an elastic arm connected between the outer bracket and the central body;

The vibrating sound-generating unit also includes a vibration component and a coil component. The vibration component includes a magnetic conductive bowl connected to the central body and a first magnet connected to the magnetic conductive bowl; the coil assembly includes a magnetic conductive bowl connected to the central body; The end plate is connected to a coil and a second magnet. The second magnet is disposed in the coil and opposite to the first magnet with the same pole. The coil is electrically connected to the pad.

Furthermore, the bone conduction earphone head further includes a soft layer connected to the outer surface of the cover, and the soft layer is provided with a plurality of protrusions protruding in a direction away from the cover.

Further, the thickness of the protruding portion protruding from the soft layer is 0.1 to 3 mm.

In a second aspect, the present invention also proposes a bone conduction earphone, including two bone conduction earphone heads as described in any one of the above, and the two bone conduction earphone heads are respectively a first bone conduction earphone head and a second bone conduction earphone head. Conductive headphone head;

The bone conduction headphones also include:

A control cabin, including a main control board for controlling the first bone conduction earphone head and the second bone conduction earphone head;

A battery compartment including a power supply for powering the first bone conduction earphone head, the second bone conduction earphone head and the main control board;

A first earhook connected between the first bone conduction earphone head and the battery compartment;

A second earhook connected between the second bone conduction earphone head and the control chamber; and,

A neckband cable is connected between the control compartment and the battery compartment.

Further, both the first earhook and the second earhook include a first outer skin layer and a first cable running through the first outer skin layer. The first cable of the first earhook One end is electrically connected to the power supply, and the other end is electrically connected to the first circuit board of the first bone conduction earphone head; one end of the first cable of the second earhook is electrically connected to the main control board, and the other end is electrically connected to the main control board. Electrically connected to the first circuit board of the second bone conduction earphone head;

The neckband cable includes a second outer layer and a second cable running through the second outer layer. One end of the second cable is electrically connected to the main control board, and the other end is electrically connected to the power supply. connect.

Further, the ends of the first ear hook, the second ear hook and the neck cord are provided with connectors, and the first bone conduction earphone head, the second bone conduction earphone head, and Both the control compartment and the battery compartment are provided with connector holes adapted to the connector plugs.

Further, the first earhook and/or the second earhook and/or the neckband are provided with a soft rubber layer covering the periphery of the connector at its end, and the soft rubber layer is connected to the The above-mentioned sockets are a tight fit.

Further, the first earhook and the second earhook each include a first elastic metal wire that is penetrated in the first outer layer, and the neckband includes a first elastic wire that is penetrated in the second outer layer. The second elastic metal wire inside, the ends of the first elastic metal wire and the second elastic metal wire are both provided with concave depressions and/or convex convex portions, and the connector is covered with the second elastic metal wire. The end of the elastic metal wire.

Further, the control cabin includes a control box and a light source electrically connected to the main control board. The main control board is arranged in the control box. The control box is provided with a light-transmitting hole corresponding to the position of the light source. hole, the control compartment further includes a panel covering the light-transmitting hole, and the panel is provided with a light-transmitting portion for light to pass through.

Further, the control cabinet further includes a flexible circuit board electrically connected to the main control board, the flexible circuit board is provided with an escape groove for avoiding the light from the light source, the flexible circuit board is provided with a capacitor, and the Capacitors are used to sense touch signals on the panel.

Further, the control chamber further includes a light guide column located between the light source and the light transmitting portion, and the light guide column is located in the avoidance groove.

Further, the control chamber further includes a light diffusion film connected to the surface of the panel facing the light source, and the light diffusion film covers the light transmitting portion.

Compared with the prior art, the present invention at least has the following beneficial effects: In the present invention, the vibrating sound-generating unit is installed between the cover and the support component, and a flexible layer is provided to separate the vibrating sound-generating unit and the support component. The vibrating sound-generating unit The vibration can be buffered and absorbed by the flexible layer, thereby reducing the vibration energy transmitted to the casing, which is beneficial to reducing the vibration of the first circuit board, improving its working reliability, and also reducing the vibration of the casing. caused by sound leakage.

Description of the drawings

Figure 1 is a schematic structural diagram of a first bone conduction earphone head according to an embodiment of the present invention.

FIG. 2 is a side view of the first bone conduction earphone head shown in FIG. 1 .

FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 .

FIG. 4 is a schematic structural diagram of the housing of the first bone conduction earphone head shown in FIG. 1 .

FIG. 5 is a schematic structural diagram of the housing shown in FIG. 4 when the first circuit board is installed.

FIG. 6 is a schematic structural diagram of the flexible layer 5 installed in the housing shown in FIG. 5 .

Figure 7 is a schematic structural diagram of a cover body according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of the connection between the cover and the vibration sound unit according to an embodiment of the present invention.

Figure 9 is a schematic structural diagram of a vibrating sound-generating unit according to an embodiment of the present invention.

FIG. 10 is a schematic diagram of the positions of the vibrating sound-generating unit and the flexible layer shown in FIG. 9 .

Figure 11 is a front view of the cover of the present invention.

FIG. 12 is a cross-sectional view taken along line D-D in FIG. 11 .

FIG. 13 is a schematic structural diagram of the shell, button assembly and first circuit board of the bone conduction earphone head shown in FIG. 1 .

Figure 14 is a side view of a second bone conduction earphone head according to an embodiment of the present invention.

FIG. 15 is a cross-sectional view taken along line B-B in FIG. 14 .

Fig. 16 is a schematic structural diagram of the housing in Fig. 14.

FIG. 17 is a schematic structural diagram of the housing shown in FIG. 14 when the first circuit board is installed.

FIG. 18 is a schematic perspective view of the second bone conduction earphone head shown in FIG. 14 .

Fig. 19 is a schematic diagram of the housing shown in Fig. 14 when a sound insulation member is installed.

Figure 20 is a schematic diagram of the positions of the sound insulation member, the guide hole, and the microphone hole in the present invention.

Figure 21 is a schematic structural diagram of a bone conduction earphone according to an embodiment of the present invention.

Figure 22 is an exploded view of a control cabin according to an embodiment of the present invention.

Figure 23 is an exploded view of a battery compartment according to an embodiment of the present invention.

Figure 24 is a schematic structural diagram of an earhook according to an embodiment of the present invention.

Figure 25 is an exploded view of the earhook shown in Figure 24.

Figure 26 is a schematic structural diagram of a neck strap according to an embodiment of the present invention.

FIG. 27 is an exploded view of the neck strap shown in FIG. 26 .

Figure 28 is a schematic structural diagram of a connector connected to a battery box according to an embodiment of the present invention.

Figure 29 is a schematic structural diagram of the main control board and control box in an embodiment of the present invention.

Figure 30 is a cross-sectional view of a control cabin according to an embodiment of the present invention. In the figure, the control cabin is provided with a light guide column.

FIG. 31 is a schematic structural diagram when a light guide column is provided in the structure shown in FIG. 29 .

Figure 32 is a cross-sectional view of a control chamber according to an embodiment of the present invention. In the figure, the control chamber is provided with a light diffusion film.

Figure 33 is a schematic diagram of a light diffusion film connected to a panel according to an embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation modes of the present application will be described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

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

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

As shown in Figures 1 to 20, the present invention proposes a bone conduction earphone head, which includes a housing 1, a cover 2, a first circuit board 3, a vibration sound unit 4 and a flexible layer 5.

As shown in Figure 3, the housing 1 includes a bottom plate 11 and a peripheral side plate 12 connected to the outer circumference of the bottom plate 11. The peripheral side plate 12 surrounds the outer circumference of the bottom plate 11, and cooperates with the bottom plate 11 to form a receiving cavity 10. Obviously, the receiving cavity 10 is formed. The upper end of the cavity 10 is open. The housing 1 also includes a support component located in the receiving cavity 10 . The support component can be connected to the bottom plate 11 or the peripheral side plate 12 , or can be connected to the bottom plate 11 and the peripheral side plate 12 at the same time.

The cover 2 is connected to the housing 1, is connected to the open end of the housing 1, and seals the opening of the receiving cavity 10, so that a relatively airtight space is formed between the housing 1 and the cover 2. First circuit board 3, vibration sound unit 4 and the flexible layer 5 are both located in the receiving cavity 10 .

The first circuit board 3 is connected to the housing 1. Preferably, it is connected to the bottom plate 11 of the housing 1. The connection method may be, for example, adhesive connection, screw connection, or hot melt column connection. In some embodiments, as shown in FIGS. 3 to 5 , the first circuit board 3 is directly connected to the bottom plate 11 of the housing 1 , and the bottom plate 11 is provided with a hot melt column 111 protruding into the receiving cavity 10 . The pillar 111 extends through the first circuit board 3 to above the first circuit board 3 and can position the first circuit board 3. At the same time, the first circuit board 3 can be fixed by heat-melting its upper end. In other embodiments, as shown in FIGS. 15 to 17 , the bottom plate 11 is provided with a number of first bosses 115 protruding toward the receiving cavity 10 , and the first circuit board 3 is placed on the first bosses 115 . The first boss 115 is supported and connected to the first boss 115 through screws 32 . A number of hot melt pillars 111 are also provided on the bottom plate 11 to position and fix the first circuit board 3 .

The vibration sound unit 4 is electrically connected to the first circuit board 3 and is capable of generating vibration. Referring to Figures 3 and 15, the vibrating sound-generating unit 4 is located between the support component and the cover 2, and the flexible layer 5 is disposed between the support component and the vibrating sound-generating unit 4, which separates the vibrating sound-generating unit 4 and the support component. The cover body 2 and the support assembly have a clamping force on the vibrating sound-generating unit 4 and the flexible layer 5 inside to fix the vibrating sound-generating unit 4. That is to say, the flexible layer 5 is clamped between the vibrating sound-generating unit 4 and the supporting assembly. A certain elastic deformation occurs to keep the vibrating sound-generating unit 4 in contact with the cover 2 .

The two ends of the vibrating sound-generating unit 4 along the direction of its vibration axis A are respectively in contact with the cover body 2 and the flexible layer 5. When vibrating, the vibration can be directly transmitted through the cover body 2 to the facial skin that is in contact with the cover body 2. to achieve bone conduction sound transmission. Since the flexible layer 5 is provided between the casing 1 and the vibrating sound unit 4, the vibration of the vibrating sound unit 4 can be buffered and absorbed by the flexible layer 5. Compared with being directly transmitted to the casing 1, the vibration transmitted to the casing can be reduced. The vibration energy of the body 1 is reduced, thereby reducing sound leakage caused by the vibration of the housing 1. At the same time, the amount of vibration experienced by the first circuit board 3 is reduced, which is beneficial to improving the reliability of its operation. In addition, the vibration sound unit 4 in the present invention can be assembled as a whole, and only needs to be clamped at both ends between the cover 2 and the support assembly, making installation more convenient and conducive to improving production efficiency.

In some embodiments, as shown in Figures 4, 5, 6, 16 and 17, the support assembly includes ribs 121 connected to the bottom plate 11 and the peripheral side plates 12. The ribs 121 are connected to the bottom plate 11 and the peripheral side plates 12. The side plate 12 is integrally injection molded and is located outside the first circuit board 3 . The upper end of the rib 121 extends above the first circuit board 3 and contacts the flexible layer 5 . Preferably, the vibrating sound-generating unit 4 is at least partially located directly above the rib plate 121 so that the rib plate 121 can better support the vibrating sound-generating unit 4 . In other embodiments, support The support assembly includes a support column connected to the bottom plate 11 (not shown in the figure, please refer to the structure of the hot melt column 111). The support column passes through the first circuit board 3 and extends to the top of the first circuit board 3, thereby abutting the flexible layer 5. At the same time, the support column can also play a role in positioning the first circuit board 3 . Preferably, the support column is located directly below the vibrating sound unit 4. It can be understood that the support assembly may include both ribs 121 and support columns.

The material of the flexible layer 5 is, for example, foam, sponge, EVA, rubber or silicone, and its cross-sectional shape is preferably the same as that of the vibrating sound unit 4. For example, when the vibrating sound unit 4 is cylindrical, the outer contour of the flexible layer 5 is also in the shape of a cylinder. Cylindrical shape.

As shown in Figures 4 and 7, in order to improve the sealing performance between the cover 2 and the housing 1, the cover 2 is provided with an outer convex annular flange 24, and the housing 1 is provided with an annular flange 24. The adapted annular groove 16 and the annular flange 24 are installed in the annular groove 16, and the two are connected by glue to achieve the effect of fixing and sealing. The cover 2 is also provided with a positioning post 25 protruding toward the housing 1. Correspondingly, the housing 1 is provided with a positioning hole 17 that matches the positioning post 25. Through the matching of the positioning post 25 and the positioning hole 17 The accurate positioning of the cover 2 and the housing 1 is achieved, and the connection strength between the cover 2 and the housing 1 can be further enhanced.

In some embodiments, referring to FIG. 8 , the vibrating sound unit 4 includes a shell 40 , elastic pieces 41 and end plates 42 respectively connected to both ends of the outer shell 40 , a vibration component 43 connected to the elastic pieces 41 and a coil assembly connected to the end plates 42 44. The vibration component 43 and the coil component 44 are both located in the housing 40 .

The shell 40 is annular, with openings at both ends. The elastic pieces 41 and the end plates 42 are respectively connected to the end surfaces of the two ends of the shell 40 and cover the openings. Both the vibration component 43 and the coil component 44 are disposed within the housing 40 . The housing 40 may be made of non-magnetic stainless steel, for example.

Referring further to FIG. 9 , the elastic piece 41 includes an outer bracket 410 connected to the end surface of the housing 40 , a central body 411 located at the center of the outer bracket 410 , and an elastic arm 412 connected between the outer bracket 410 and the central body 411 . The vibration component 43 includes a magnetically conductive bowl 430 connected to the central body 411 and a first magnet 431 connected within the magnetically conductive bowl 430. The magnetically conductive bowl 430 is made of magnetically conductive material and can be attracted by magnetic force. The first magnet 431 is made of magnetic material, such as a magnet or magnetic steel, and can be connected to the magnetic bowl 430 by, for example, gluing or welding.

The coil assembly 44 includes a coil 440 and a second magnet 441 disposed in the coil 440. The coil 440 and the second magnet 441 are both connected to the end plate 42. The first magnet 431 and the second magnet 441 are arranged opposite to each other in the same pole, with a space 45 between them to provide a space for the vibration component 43 to vibrate. The end plate 42 and the magnetic bowl 430 are both made of magnetically conductive materials, which can be attracted by magnets. There is a gap between the first magnet 431 and the end plate 42. There is a first attraction force, and there is a second attraction force between the second magnet 441 and the magnetic bowl 430. As a preferred embodiment, the repulsion force between the first magnet 431 and the second magnet 441 is related to the first attraction force and the second attraction force. The resultant forces are equal in magnitude and opposite in direction, so that a static balance is formed between the vibration component 43 and the coil component 44, which is beneficial to improving the vibration performance and sensitivity of the vibration component 43.

When the coil 440 is energized, it can generate a magnetic field, thereby generating a magnetic force that drives the vibration component 43 to vibrate. The elastic piece 41 can provide an elastic force that drives the vibration component 43 to reset. It can be understood that the vibration axis of the vibration component 43 is the vibration axis of the vibration sound unit 4 .

As a preferred embodiment, the second magnet 441 does not exceed the upper end surface of the coil 440, so that the distance between the vibration component 43 and the coil component 44 can be smaller, and at the same time, the driving force of the coil component 44 on the vibration component 2 can be smaller. big.

The end of the vibrating sound-generating unit 4 with the elastic piece 41 is connected to the cover 2. Specifically, the cover 2 includes a convex ring 20 surrounding the end of the shell 40, and the end of the vibrating sound-generating unit 4 is fitted in the convex ring 20. , can be limited by the convex ring 20, which facilitates the installation and positioning of the vibration sound unit 4, further facilitates the assembly of the bone conduction earphone head, and is conducive to ensuring the quality of the assembly. At the same time, the inner surface 23 of the cover 2 that is in contact with the vibrating sound unit 4 is provided with an escape cavity 21 to avoid the vibration of the elastic piece 41. The inner surface 23 is annular and is arranged corresponding to the outer bracket 410 of the elastic piece 41 and the outer shell 40, and the avoidance cavity 21 The elastic arm 412 and the central body 411 are arranged opposite each other to prevent the vibration assembly 43 from hitting the cover 2 during vibration.

Referring to Figures 8 and 10, the vibration sound unit 4 also includes a second circuit board 46 connected to the outer surface of the end plate 42. A number of soldering pads 460 are provided on the second circuit board 46, and some of the soldering pads 460 are used to communicate with the coil. The wires 440 are soldered, and some pads 460 are used for wiring with external circuits (for example, the first circuit board 5). The flexible layer 5 is provided with an escape hole 50. The escape hole 50 surrounds the outside of the solder pad 430 to avoid the solder pad 430. On the one hand, it can facilitate wiring, and on the other hand, it can prevent the flexible layer 5 from directly contacting the solder joints, which affects the reliability of the solder joint. sex.

As shown in Figure 4, the housing 1 is also provided with a connector hole 87 that communicates with the receiving cavity 10. The cables outside the bone conduction earphone head can enter the receiving cavity 10 from the connector hole 87, thereby connecting to the internal parts. For example, it is connected to the first circuit board 3 or the second circuit board 46 .

As shown in Figures 1, 11 and 12, the bone conduction earphone head also includes a soft layer 22 connected to the outer surface of the cover 2. The material of the soft layer 22 is, for example, silicone, which is used to contact the skin of the human body. , can improve the comfort of use. The outer end surface 220 of the soft layer 22 for contacting with the skin is provided with a direction away from the cover 2 There are several protrusions 221 protruding in the direction. When in use, the protrusions 221 fit the skin more closely, which can transmit vibrations to the skin more directly, reduce energy loss, and thereby increase the volume.

As a preferred embodiment, the thickness of the protruding portion 221 protruding from the soft layer 22 is 0.1 to 3 mm, more preferably 0.1 to 1 mm, further preferably 0.2 to 0.5 mm. Further, as shown in FIG. 1 , the protrusions 221 on the soft layer 22 form a cat's paw shape, which can enhance the aesthetics. The number of the protrusions 221 is five, each of which is a large protrusion located on one side. and four small protrusions located on the other side. Preferably, the thickness of the large protrusions protruding from the soft layer 22 is 0.1 to 0.6 mm greater than the thickness of the small protrusions protruding from the soft layer 22 .

In some embodiments, the normal line B of the outer end surface 220 is parallel to or coincides with the vibration axis A, and the angle between the two is 0 degrees. In other embodiments, referring to Figure 12, the normal line B of the outer end surface 220 is inclined relative to the vibration axis A, and an angle C is formed between the two, so that the soft layer 22 can be in closer contact with the skin, preferably , the included angle C ranges from 0 to 35°, and more preferably, the included angle C ranges from 0 to 10°. The inclination angle of the normal line B of the outer end surface 220 can be changed by making the soft layer 22 with uneven wall thickness. In the figure, the thickness of the soft layer 22 gradually increases from left to right.

Referring to Figure 21, bone conduction earphones usually include two bone conduction earphone heads, corresponding to the left and right ears respectively. Different components can be installed on the two bone conduction earphone heads to have different functions. For example, one bone conduction earphone head can be installed on the two bone conduction earphone heads. Buttons are set on the top to perform operations such as turning on and off, playing, pausing, and switching songs. A microphone can be set on the other bone conduction headset to achieve functions such as sound pickup and noise reduction. For convenience of description, the two bone conduction earphone heads will be respectively referred to as the first bone conduction earphone head 8 and the second bone conduction earphone head 80 below.

As shown in FIG. 3 , FIG. 4 and FIG. 13 , the figure shows a first bone conduction earphone head 8 of an embodiment, which is provided with a button assembly 6 . Specifically, the first circuit board 3 of the first bone conduction earphone head 8 is provided with a micro switch 30 which is arranged toward the base plate 11. The base plate 11 is provided with a button through hole 110 corresponding to the micro switch 30, and the button assembly 6 is arranged on inside the key through hole 110 . By pressing the button assembly 6, the action of the micro switch 30 can be triggered, thereby realizing functions such as turning on and off, playing, pausing, and switching songs.

In some embodiments, the key assembly 6 includes an elastic layer 60 connected to the base plate 11 , a contact member 61 connected to the elastic layer 60 and corresponding to the micro switch 30 , a pressing member 62 connected to the contact member 61 , and a pressing member 62 connected to the contact member 61 . The decorative plate 63 connected to the pressing member 62, the elastic layer 60, the contact member 61 and the pressing member 62 cooperate to seal the key through hole 110. The elastic layer 60 is preferably made of silicone, and it and the housing 1 can be made by two-color injection molding. molded together. The contact piece 61 is disposed in the middle of the elastic layer 60 . The pressing member 62 is fixedly connected to the contact member 61 and has a plate body with a larger area than the contact member 61 to facilitate pressing. The contact piece 61 and the pressing piece 62 are preferably made of hard plastic parts to facilitate injection molding. When the pressing member 62 is pressed down, the pressing member 62 drives the contact member 61 to press the micro switch 30, and at the same time the elastic layer 60 undergoes elastic deformation. After the pressing member 62 is released, the elastic layer 60 drives the contact member 61 and the pressing member 62. Return to original position.

The button assembly 6 also includes a metal decorative piece 63 arranged outside the pressing member 62. A knurled pattern can be provided on the surface of the decorative piece 63. In this way, the bone conduction earphone head is more beautiful and has greater friction during use and improves the feel. better. It can be understood that, in order to improve the overall aesthetics of the bone conduction earphones, as shown in Figure 15, although the second bone conduction earphone head 80 is not provided with the button assembly 6, the same decorative plate 63 can also be provided, so that the two bone conduction earphones The headphone head is more symmetrical.

Preferably, a concave mounting groove 114 is also provided on the outer surface of the base plate 11 , and the key assembly 6 is disposed in the mounting groove 114 . The mounting groove 114 can serve as a guide to facilitate pressing the key assembly 6 . At the same time, the key assembly 6 The protruding height is smaller and more beautiful.

As shown in FIGS. 14 to 18 , the figures show a second bone conduction earphone head 80 according to an embodiment, which has the functions of sound pickup and noise reduction. Specifically, as shown in Figure 17, the first circuit board 3 of the second bone conduction earphone head 80 includes microphones 31. The number of microphones 31 is usually two. One of the two microphones 31 is mainly used to receive the user's speech. voice (voice), and the other is mainly used to receive environmental sounds (background noise) for active noise reduction, thereby achieving the functions of sound pickup and noise reduction.

In order to allow external sounds to be received by the microphone 31 more smoothly, as shown in FIG. 18 , the housing 1 is provided with a microphone hole 13 corresponding to the microphone 31 , and the sound can be directly transmitted to the microphone 31 through the microphone hole 13 . Furthermore, the bone conduction earphone head also includes a sound insulation member 7 provided between the housing 1 and the first circuit board 3. The sound insulation member 7 is provided with a waterproof breathable membrane 70 corresponding to the microphone hole 13. The waterproof breathable membrane 70 has a waterproof function. The sound transmission function can prevent external water vapor from entering the bone conduction earphone head, and the sound entering from the microphone hole 13 can be transmitted to the microphone 31 through the waterproof and breathable membrane 70 .

As shown in Figure 20, the sound insulation member 7 also includes a sound insulation ring 71. The sound insulation ring 71 is covered outside the sound pickup film of the microphone 31. Specifically, the waterproof and breathable film 70 is connected to one end of the sound insulation ring 71 and covers the sound insulation ring 71. In the center hole 710 , the sound insulation ring 71 is in contact with the first circuit board 3 and surrounds the outside of the sound pickup film of the microphone 31 , which can improve the blocking effect of external sounds and prevent the sound in the center hole 710 from escaping to the sound insulation member 7 external.

The sound insulation member 7 is made of foam, sound-absorbing cotton, sponge or other materials with sound insulation and sound-absorbing effects. It is clamped between the first circuit board 3 and the base plate 11 to play a sealing role. Since the sound insulation member 7 has a noise-cancelling function, the external sound can be better transmitted to the microphone 31 through the microphone hole 13, reducing the sound leaking to the outside, and the sound transmitted from outside the microphone hole 13 to the receiving cavity 10 ( For example, the sound incoming from another microphone hole 13 or the sound incoming through the housing 1) can be absorbed by the sound insulation member 7, reducing sound interference, making the sound signal picked up by the microphone 31 more accurate and clear, and at the same time, it can obtain Better active noise reduction effect.

The axis direction of the microphone hole 13 does not necessarily point directly to the microphone 31. As shown in FIGS. 16 and 17 , a guide hole 14 can be provided to transmit the sound from the microphone hole 13 to the microphone 31. Specifically, the bottom plate 11 is provided with a second boss 112 protruding into the receiving cavity 10. The second boss 112 is provided with a positioning groove 113 adapted to the sound insulation member 7. The sound insulation member 7 is partially provided in the positioning groove. 113, and is limited by the positioning groove 113. The guide hole 14 is opened on the bottom surface of the positioning groove 113 and communicates with the microphone hole 13 . The sound insulation member 7 and the microphone 31 are located directly above the guide hole 14 , and the axis of the microphone hole 13 is perpendicular to the guide hole 14 .

The axes of the two microphone holes 13 form an included angle. As a preferred embodiment, the included angle between the positive directions of the axes of the two microphone holes 13 is not less than 70°, so that the sound collected by the two microphones 31 is The correlation is low, which improves the noise reduction effect. It is further preferred that the angle between the positive directions of the axes of the two microphone holes 13 is 90°. At this time, the correlation of the sounds collected by the two microphones 31 is the smallest, and the noise reduction effect is improved. best effect. The positive direction of the axis refers to the direction from the inside of the receiving cavity 10 to the outside.

The present invention also proposes a bone conduction earphone, as shown in Figure 21, which includes two bone conduction earphone heads as described above. Further, the two bone conduction earphone heads are respectively the first bone conduction earphone heads as mentioned above. The conductive earphone head 8 and the second bone conduction earphone head 80 .

The bone conduction earphone also includes a control compartment 81, a battery compartment 82, a first earhook 83 connected between the battery compartment 82 and the first bone conduction earphone head 8, and a first earhook 83 connected between the control compartment 81 and the second bone conduction earphone head 80. The second ear hook 84 and the neck wearing wire 85 connected between the control compartment 81 and the battery compartment 82.

As shown in Figure 22, the control compartment 81 includes a control box 811, a control box cover 812 that seals the control box 811, and a main control board 810 provided in the control box 811. The main control board 810 is used to control two bone conduction earphone heads. The vibration sound unit 4 inside vibrates and sounds.

As shown in Figure 23, the battery compartment 82 includes a battery box 821, a battery box cover 822 sealing the battery box 821, and a power supply 820 disposed in the battery box 821. The power supply 820 may be, for example, a rechargeable lithium battery. Provide power to the electronic components of the bone conduction earphone, such as the main control board 810 and the vibration sound unit 4 .

Preferably, the control compartment 81 and the battery compartment 82 have the same shape, so that the entire bone conduction earphone is more symmetrical and beautiful, and the force is more balanced and comfortable when worn.

The first earhook 83 and the second earhook 84 are both arc-shaped, and the control compartment 81, the battery box 821, and the two bone conduction headphone heads all protrude toward the same side. When worn, the first earhook 83 and the second earhook 84 are curved. The hook 84 is hung above the ear, the first bone conduction earphone head 8 and the battery compartment 82 and the second bone conduction earphone head 80 and the control compartment 81 are respectively located on both sides of the corresponding ears, and the two bone conduction earphone heads are clamped on On both sides of the head, the bone conduction headphones are more securely worn and less likely to fall off.

As shown in Figures 24 and 25, the first earhook 83 and the second earhook 84 have the same structure, and both include a first outer layer 831, two connectors 86 respectively connected to both ends of the first outer layer 831, and The first cable 830 and the first elastic metal wire 832 are penetrated in the first outer layer 831 . Both ends of the first cable 830 pass through connector plugs 86 to facilitate connection with electrical components. One end of the first cable 830 of the first earhook 83 is electrically connected to the power supply 820 , and the other end is electrically connected to the first circuit board 3 of the first bone conduction earphone head 8 . One end of the first cable 830 of the second earhook 84 is electrically connected to the main control board 810 , and the other end is electrically connected to the circuit board 3 of the second bone conduction earphone head 80 .

As shown in FIGS. 26 and 27 , the neckband cable 85 includes a second outer layer 851 , two connectors 86 respectively connected to both ends of the second outer layer 851 , and second wires both extending through the second outer layer 831 . cable 850 and a second elastic wire 852. Both ends of the second cable 850 pass through the connectors 86 , one end of which is electrically connected to the main control board 810 , and the other end of which is electrically connected to the power supply 820 . Power and signals are transmitted between the bone conduction earphone head, the control compartment 81 and the battery compartment 82 through cables.

Connectors 86 are provided at the ends of the first ear hook 83, the second ear hook 84, and the neckband wire 85. As shown in Figures 4, 16, 22, and 23, the shells of the two bone conduction earphone heads 1. The control box 811 of the control compartment 81 and the battery box 821 of the battery compartment 82 are both provided with connecting holes 87 that are adapted to the connecting plugs 86 . Through the mating of the connector plug 86 and the connector hole 87, various components can be connected conveniently. The housing 1, the control box 811 and the battery box 821 are all provided with a snap portion 870 located at the bottom of the connector hole 87. Referring further to Figure 28, the end of the connector 86 is provided with two relatively spaced snap arms 860. The end of the clamping arm 860 is provided with a laterally protruding hook 861. After the connector 86 is inserted into the connector hole 87, the hooks 861 of the two clamping arms 860 hook the clamping portion 870, thereby preventing the connector 86 from being connected. Disengage socket 87.

As shown in Figure 24, in order to improve the waterproof effect, the first ear hook 83 is provided with a connector covering its end. The outer dimensions of the soft rubber layer 88 and the annular soft rubber layer 88 on the outer periphery of the plug 86 are larger than the outer dimensions of the connector plug 86, and they are tightly matched (interference fit) with the connector hole 87, thereby realizing the connector plug 86 and the connector hole. 87 between sealing to improve waterproof effect. The material of the soft rubber layer 88 is preferably silicone, which is integrally formed with the first ear hook 83 and is molded together with the connector plug 86 by two-color injection molding. Further, the soft glue layer 88 is coated with glue on the outside, and is adhered to the connector hole 87 through the glue, which can further improve the waterproof effect and at the same time improve the connection strength between the first earhook 83 and the bone conduction earphone head and the control chamber 81 . Obviously, the connector 86 on the second ear hook 84 and the neckband 85 can also apply the aforementioned structure.

The first elastic metal wire 832 and the second elastic metal wire 852 can be a single metal, or an alloy material including multiple metal materials, such as aluminum alloy, magnesium alloy, titanium alloy, spring steel, etc., or an alloy material including metal materials. As a preferred embodiment of the composite material with non-metallic materials, the material of the elastic metal wire is titanium wire. The elastic metal wire can provide the elastic force to drive the ear hook and the neck wearing wire 85 to return to their original shape, and can provide the bone conduction earphone head's adhesion to the skin when worn, making the wearing more secure and comfortable. As shown in Figure 25, in order to improve the firmness of the connection between the elastic metal wire and the connector 86, the end of the elastic metal wire is provided with a plurality of radially concave recessed portions 833 and/or a plurality of radially outwardly convex convex portions. 834, the connector 86 is wrapped on the end of the elastic metal wire, covering the recessed portion 833 and the convex portion 834, thereby making the connection between the connector 86 and the elastic metal wire stronger, and the elastic metal wire is not easy to move. The connector 86 It is also not easy to fall off. The above-mentioned recessed portion 833 and convex portion 834 can be formed by radially pressing the elastic metal wire.

As shown in Figures 29 and 30, the control cabin 81 also includes a light source 816 electrically connected to the main control board 810. The light source 816 is preferably an LED lamp bead connected to the main control board 810. The control box 811 is provided with a light-transmitting hole 818 corresponding to the position of the light source 816 . The control compartment 81 also includes a panel 813 covering the light-transmitting hole 818. The panel 813 is provided with a light-transmitting portion (not shown in the figure) for light to pass through. When the light source 816 emits light, the light can illuminate the light-transmitting part to display information corresponding to the shape of the light-transmitting part. For example, the shape of the light-transmitting part can be the same as a company logo or product name to display the illuminated company logo or product. The name is more beautiful. The shape of the light-transmitting hole 818 is adapted to the light-transmitting part. For example, when the light-transmitting part is a long character, the light-transmitting hole 818 may be in a long strip shape.

In a preferred embodiment, as shown in Figures 30 and 31, a light guide column 815 is provided between the light-transmitting part and the light source 816, so that the light can be transmitted to the light-transmitting part more uniformly, so that the light-transmitting part The brightness is more uniform. In another preferred embodiment, as shown in Figures 32 and 33, the panel 813 faces the light source A light diffusion film 817 is provided on the surface of 816, and the light diffusion film 817 covers the light-transmitting part. When light shines on the light diffusion film 817 from the light transmission hole 818, the light is diffused through the light diffusion film 817, making the brightness of the light emitted by the light transmission part more uniform and lower, making viewing more comfortable. It can be understood that the control chamber 81 can also be provided with a light guide column 815 and a light diffusion film 817 at the same time.

As shown in Figures 29 to 31, the control cabin 81 also includes a flexible circuit board 814 electrically connected to the main control board 810. The flexible circuit board 814 is arranged opposite the panel 813, and a plurality of capacitors are provided on the flexible circuit board 814 (Fig. (not shown), the capacitor is used to sense the touch signal on the panel 813. When the finger is located at different positions on the panel 813, the capacitor at the position corresponding to the finger on the flexible circuit board 814 is sensed. When sliding across different positions, it is arranged at different positions. The capacitor will sense the change in capacitance, and this signal is transmitted to the main control board 810 through the lines drawn from the flexible circuit board 814. The main control board 810 obtains the corresponding control instructions by processing and calculating the signals. In this way, different control instructions can be obtained according to different gestures of the finger on the panel 813. For example, when the finger slides from bottom to upward, it means to turn up the volume, and when the finger slides from top to bottom, it means to turn down the volume.

The closer the distance between the capacitor and the panel 813 is, the better the sensitivity of the induction is. Therefore, preferably, the capacitor is disposed on the surface of the flexible circuit board 814 facing the panel 813, and the flexible circuit board 814 and the panel 813 are disposed close to each other.

In order to allow a larger area of the panel 813 to be touched to generate a sensing signal, the flexible circuit board 814 is arranged in a U shape, with an escape groove 8140 for avoiding the light from the light source 816, and the light guide column 815 is arranged in the escape groove 8140. In this way, The flexible circuit board 814 is enclosed on three sides of the light guide column 815, and has a larger area relative to the panel 813, which can realize touch sensing in a larger area and improve the user experience.

The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are deemed to be within the protection scope of the present invention.

Claims (24)

1. A bone conduction earphone head, which is characterized by including:

   The housing (1) includes a receiving cavity (10) with one end open and a support component located in the receiving cavity (10);

   The cover (2) is connected to the housing (1) and seals the opening of the receiving cavity (10);

   The first circuit board (3) is located in the receiving cavity (10) and connected to the housing (1);

   A vibration sound unit (4) is provided between the support component and the cover (2); and,

   A flexible layer (5) is sandwiched between the support component and the vibrating sound-generating unit (4), and separates the vibrating sound-generating unit (4) and the support component.
2. The bone conduction earphone head according to claim 1, characterized in that the housing (1) includes a bottom plate (11) arranged opposite to the opening and a peripheral side plate (11) connected to the outer periphery of the bottom plate (11). 12), the support assembly is connected to the bottom plate (11) and/or the peripheral side plate (12).
3. The bone conduction earphone head according to claim 2, characterized in that the support assembly includes a support column connected to the bottom plate (11), and the support column passes through the first circuit board (3) and the The flexible layer (5) is in contact.
4. The bone conduction earphone head according to claim 2, characterized in that the support assembly includes a rib (121) connected to the bottom plate (11) and/or the peripheral side plate (12), and the rib The board (121) extends above the first circuit board (3) and contacts the flexible layer (5).
5. The bone conduction earphone head according to claim 2, characterized in that the first circuit board (3) is provided with a micro switch (30) arranged toward the bottom plate (11), and the bottom plate (11) is provided with a micro switch (30). There is a key through hole (110) corresponding to the micro switch (30), and the bone conduction earphone head also includes a key assembly (6) disposed in the key through hole (110).
6. The bone conduction earphone head according to claim 5, characterized in that the button assembly (6) includes an elastic layer (60) connected to the bottom plate (11), connected to the elastic layer (60) and with The contact piece (61) that the micro switch (30) abuts and the pressing piece (62) connected to the contact piece (61), the elastic layer (60), the contact piece (61) ) and the pressing member (62) cooperate to seal the key through hole (110).
7. The bone conduction earphone head according to claim 2, characterized in that the first circuit board (3) It includes a microphone (31), the housing (1) is provided with a microphone hole (13) corresponding to the microphone (31), and the bone conduction earphone head also includes a microphone located between the housing (1) and the The sound insulation member (7) between the first circuit boards (3) is provided with a waterproof and breathable membrane (70) corresponding to the microphone hole (13). Through the microphone hole (13) ) is transmitted to the microphone (31) through the waterproof and breathable membrane (70).
8. The bone conduction earphone head according to claim 7, characterized in that the sound insulation member (7) further includes a sound insulation ring (71) that offsets the first circuit board (3), and the sound insulation ring (71) Surrounding the outside of the sound pickup film of the microphone (31), the waterproof and breathable film (70) covers the central hole (710) of the sound isolation ring (71).
9. The bone conduction earphone head according to claim 7, characterized in that the housing (1) is provided with a guide hole (14) communicating with the microphone hole (13), and the waterproof and breathable membrane (70) covers Hold the guide hole (14).
10. The bone conduction earphone head according to any one of claims 1 to 9, characterized in that the flexible layer (5) is foam, sponge, EVA, rubber or silicone.
11. The bone conduction earphone head according to any one of claims 1 to 9, characterized in that the vibration sound unit (4) includes an annular shell (40) and a spring piece connected to the end of the shell (40). (41), the cover (2) includes a convex ring (20) surrounding the end of the housing (40) and an escape cavity (21) to avoid vibration of the elastic piece (41).
12. The bone conduction earphone head according to claim 11, characterized in that the vibration sound unit (4) further includes an end plate (42) connected to the shell (40) and an end plate (42) connected to the end plate (42). The second circuit board (46), the end plate (42) and the elastic piece (41) are respectively connected to both ends of the housing (40), and the second circuit board (46) is located in the housing (40). 40) Externally, the flexible layer (5) is provided with an escape hole (50) to avoid the pad (460) on the second circuit board (46).
13. The bone conduction earphone head according to claim 12, characterized in that the elastic piece (41) includes an outer bracket (410) connected to the end surface of the housing (40), and an outer bracket (410) located in the outer bracket (410). The central body (411) and the elastic arm (412) connected between the outer bracket (410) and the central body (411);

    The vibrating sound-generating unit (4) also includes a vibrating component (43) and a coil component (44). The vibrating component (43) includes a magnetically conductive bowl (430) connected to the central body (411) and a The first magnet (431) in the magnetic bowl (430); the coil assembly (44) includes a coil (440) and a second magnet (441) both connected to the end plate (42). Two magnets (441) are provided in the coil (440) and are opposite to the first magnet (431) with the same pole. The coil (440) is electrically connected to the soldering pad (460).
14. The bone conduction earphone head according to any one of claims 1 to 9, characterized in that it further includes a soft layer (22) connected to the outer surface of the cover (2), the soft layer (22) ) is provided with several protrusions (221) protruding in a direction away from the cover (2).
15. The bone conduction earphone head according to claim 14, characterized in that the thickness of the protruding portion (221) protruding from the soft layer (22) is 0.1 to 3 mm.
16. A bone conduction earphone, characterized in that it includes two bone conduction earphone heads according to any one of claims 1 to 15, and the two bone conduction earphone heads are respectively a first bone conduction earphone head (8) and The second bone conduction earphone head (80);

    The bone conduction headphones also include:

    A control cabin (81), including a main control board (810) for controlling the first bone conduction earphone head (8) and the second bone conduction earphone head (80);

    The battery compartment (82) includes a power supply (820) for powering the first bone conduction headphone head (8), the second bone conduction headphone head (80) and the main control board (810);

    A first earhook (83) is connected between the first bone conduction earphone head (8) and the battery compartment (82);

    A second earhook (84) is connected between the second bone conduction earphone head (80) and the control chamber (81); and,

    A neck cord (85) is connected between the control compartment (81) and the battery compartment (82).
17. The bone conduction earphone according to claim 16, characterized in that the first earhook (83) and the second earhook (84) both include a first outer layer (831) and are threaded through the first earhook. A first cable (830) in the outer layer (831), one end of the first cable (830) of the first earhook (83) is electrically connected to the power supply (820), and the other end is connected to the third The first circuit board (3) of a bone conduction earphone head (8) is electrically connected; one end of the first cable (830) of the second earhook (84) is electrically connected to the main control board (810), and the other end is electrically connected to the main control board (810). One end is electrically connected to the first circuit board (3) of the second bone conduction earphone head (80);

    The neckband (85) includes a second outer layer (851) and a second outer layer (851) that is threaded through the second outer layer (851). There is a second cable (850) inside, one end of the second cable (850) is electrically connected to the main control board (810), and the other end is electrically connected to the power supply (820).
18. The bone conduction earphone according to claim 17, characterized in that the ends of the first earhook (83), the second earhook (84) and the neck wearing wire (85) are provided with connectors. Plug (86), the first bone conduction earphone head (8), the second bone conduction earphone head (80), the control compartment (81) and the battery compartment (82) are all equipped with the Connect the plug (86) to the connecting jack (87).
19. The bone conduction earphone according to claim 18, characterized in that the first earhook (83) and/or the second earhook (84) and/or the neck wearing wire (85) are provided with a package. A soft rubber layer (88) covers the outer periphery of the connector plug (86) at its end, and the soft rubber layer (88) is tightly matched with the connector hole (87).
20. The bone conduction earphone according to claim 18, characterized in that the first earhook (83) and the second earhook (84) both include A first elastic metal wire (832). The neckband line (85) includes a second elastic metal wire (852) penetrated in the second outer layer (851). The first elastic metal wire (832) ) and the ends of the second elastic metal wire (852) are provided with concave recesses (833) and/or convex protrusions (834), and the connector (86) is covered with the elastic The end of the wire (89).
21. The bone conduction earphone according to any one of claims 16 to 20, characterized in that the control chamber (81) includes a control box (811) and a light source (816) electrically connected to the main control board (810). , the main control board (810) is installed in the control box (811), and the control box (811) is provided with a light-transmitting hole (818) corresponding to the position of the light source (816), and the control chamber (81) also includes a panel (813) covering the light-transmitting hole (818), and the panel (813) is provided with a light-transmitting portion for light to pass through.
22. The bone conduction earphone according to claim 21, characterized in that the control compartment (81) further includes a flexible circuit board (814) electrically connected to the main control board (810), the flexible circuit board (814) ) is provided with an escape groove (8140) to avoid the light from the light source (816), and the flexible circuit board (814) is provided with a capacitor, and the capacitor is used to sense the touch signal on the panel (813).
23. The bone conduction earphone according to claim 22, characterized in that the control chamber (81) further includes a light guide column (815) located between the light source (816) and the light transmitting part, the light guide column (815) is located in the escape groove (8140).
24. The bone conduction earphone according to claim 21, characterized in that the control chamber (81) also It includes a light diffusion film (817) connected to the surface of the panel (813) facing the light source (816), and the light diffusion film (817) covers the light-transmitting part.