Earphone head and bone conduction earphone

Abstract

The application discloses an earphone head and a bone conduction earphone, and relates to the technical field of bone conduction earphones. The earphone head comprises a shell assembly, a first circuit assembly, a first key panel and an indicator light assembly. The first circuit assembly comprises a first circuit board and a first sensor; the first key panel is connected with the shell assembly and is used for triggering the first sensor; the indicator light assembly comprises a light emitting element arranged on the first circuit board and a light guide element arranged opposite to the light emitting element; the light guide element is connected with the shell assembly and the first key panel; and the light emitted by the light emitting element and transmitted by the light guide element can be observed from the outside of the first key panel. The light guide element is embedded in the first key panel, the indicator light assembly almost does not occupy extra space, the integration and compactness of the key and the indicator light are greatly improved, the miniaturization of the earphone head is facilitated, and the connection strength of the first key panel and the shell assembly is improved.

Description

Technical Field

[0001] This invention relates to the field of bone conduction headphone technology, and more particularly to an earphone head and a bone conduction headphone. Background Technology

[0002] Bone conduction headphones typically consist of two earpieces, a back hook, a battery compartment, a control compartment, and ear hooks. The battery compartment is connected to one of the earpieces, and the control compartment is connected to the other earpiece via the ear hooks. When worn, the earpieces are positioned outside the ear canal, in contact with the facial skin, and transmit sound through bone conduction.

[0003] Bone conduction headphones feature buttons and indicator lights. The buttons control the headphones, while the indicator lights display statuses such as power on / off, charging, or Bluetooth connection. Currently, the design of these buttons and indicator lights is not compact enough, requiring significant space. As bone conduction headphones become more versatile, the number of internal components needs to increase. If the button and indicator light design is not compact enough, the overall size of the headphones may increase, affecting wearing comfort. Furthermore, some bone conduction headphones, in an effort to save space, use dot-shaped light-emitting surfaces for their indicator lights, resulting in a small luminous area and poor indication.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects.

[0005] The above content is only used to help understand the technical solution of this application and does not constitute an admission that the above is prior art. Summary of the Invention

[0006] The purpose of this invention is to provide an earphone head and bone conduction headphones to improve the structural compactness of buttons and indicator lights.

[0007] To achieve the above-mentioned objectives, the present invention provides an earphone head, comprising:

[0008] Housing components;

[0009] The first circuit assembly includes a first circuit board connected to the housing assembly and a first sensor disposed on the first circuit board, wherein both the first circuit board and the first sensor are located inside the housing assembly.

[0010] A first button panel, disposed outside the housing assembly and connected to the housing assembly, is used to trigger the first sensor; and,

[0011] The indicator light assembly includes a light-emitting element disposed on the first circuit board and a light guide element disposed corresponding to the light-emitting element. The light guide element is connected to both the housing assembly and the first button panel. The light emitted by the light-emitting element transmitted by the light guide element can be observed from the outside of the first button panel.

[0012] Furthermore, the light guide is embedded in the first button panel;

[0013] The light guide component is exposed outside the first button panel;

[0014] The light guide element is exposed on the surface of the first button panel, and the outer surface of the first button panel where the light guide element is exposed is coated with a light-transmitting paint.

[0015] Furthermore, the number of first sensors disposed on the first circuit board is two or more, and the light-emitting element is located between the two first sensors.

[0016] Furthermore, the housing assembly is provided with a first mounting hole connecting its inner and outer sides, the first button panel is provided with a second mounting hole, and the light guide includes a light receiving part disposed in the first mounting hole and a light emitting part disposed in the second mounting hole. Both the light receiving part and the light emitting part are strip-shaped and extend along the length direction of the first button panel.

[0017] Furthermore, the light-receiving part and the light-emitting part are directly connected and are offset along the width direction of the light guide.

[0018] Furthermore, the width W1 of the light-receiving part is greater than the width W2 of the light-emitting part, and the length L1 of the light-receiving part is less than the length L2 of the light-emitting part.

[0019] Furthermore, the light guide is integrally formed, with its light-emitting portion located above the top surface of the light-receiving portion facing the first button panel, and its portion extending below the top surface.

[0020] Furthermore, the first button panel is strip-shaped and includes a fixed part connected to the light guide and two cantilever parts located at both ends of the fixed part. The first button panel includes an abutting protrusion for triggering the first sensor. The abutting protrusion is provided on both cantilever parts to trigger the first sensor located on both sides of the light-emitting element, respectively.

[0021] Furthermore, the light-receiving part is partially embedded within the fixing part.

[0022] Furthermore, the first button panel also includes an external protrusion disposed on the fixing part, and the housing assembly is provided with a mounting groove corresponding to the external protrusion, and the external protrusion is inserted into the mounting groove and fixedly connected to the housing assembly.

[0023] Furthermore, the housing assembly includes a mounting plate located on its back side, the mounting plate having a mounting base protruding toward the first button panel, the fixing part being supported by the mounting base, and both the first mounting hole and the mounting groove being provided on the mounting base.

[0024] Furthermore, the protrusion is a strip extending along the length of the first button panel, and the protrusion and the light guide are spaced apart along the width of the first button panel. The mounting groove does not penetrate into the interior of the housing assembly.

[0025] Furthermore, the length of the protruding member is equal to the length of the light-collecting portion, and the ends of both are flush; or,

[0026] The length of the protruding member is greater than the length of the light-collecting part, and the end of the protruding member extends beyond the end of the light-collecting part.

[0027] Furthermore, the outer surface of the housing assembly is provided with an adhesive groove communicating with the first mounting hole, the light guide is adhesively connected to the housing assembly, and the adhesive groove is filled with adhesive.

[0028] Furthermore, the first sensor is a pressure sensor, the first circuit board is a flexible circuit board, the first button panel includes an abutting protrusion corresponding to the position of the first sensor, the housing assembly includes a mounting plate separating the circuit board assembly and the abutting protrusion, the first circuit board is connected to the inner surface of the mounting plate, and a soft pad is provided between the abutting protrusion and the mounting plate.

[0029] Furthermore, the housing assembly includes a mounting plate located on its rear side, and both the first button panel and the first circuit assembly are connected to the mounting plate;

[0030] The earphone head also includes a second circuit assembly and a second button panel located on both sides of the mounting plate. The second circuit assembly includes a second circuit board located inside the housing assembly and a second sensor disposed on the second circuit board. The second button panel is used to trigger the second sensor.

[0031] The first button panel and the second button panel are arranged side by side, and the first circuit board is a flexible circuit board and is electrically connected to the second circuit board.

[0032] Secondly, the present invention provides a bone conduction headphone, including the headphone head as described above.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] According to at least one embodiment of the present invention, the earphone head includes a shell assembly, a first circuit assembly, a first button panel, and an indicator light assembly. The first circuit assembly includes a first circuit board connected to the shell assembly and a first sensor disposed on the first circuit board, both the first circuit board and the first sensor being located inside the shell assembly. The first button panel is disposed outside the shell assembly and connected to it, and is used to trigger the first sensor. The indicator light assembly includes a light-emitting element disposed on the first circuit board and a light guide element disposed opposite to the light-emitting element. The light guide element is connected to both the shell assembly and the first button panel, and the light emitted by the light guide element can be observed from the outside of the first button panel. On one hand, the light guide element connects the shell assembly and the first button panel, and the indicator light assembly occupies almost no additional space, greatly improving the integration and compactness of the button and indicator light assemblies, which is beneficial for the miniaturization of the earphone head. On the other hand, in addition to guiding light, the light guide element also connects the first button panel and the shell assembly, improving the connection strength, resulting in a more compact overall structure. Attached Figure Description

[0035] Figure 1 This is a three-dimensional schematic diagram of a bone conduction headphone according to some embodiments of the present invention.

[0036] Figure 2 This is a three-dimensional schematic diagram of the earpiece head in some embodiments of the present invention.

[0037] Figure 3 It is to face it squarely Figure 2 A diagram showing the back of the earphone head.

[0038] Figure 4 It is along Figure 3 The sectional view obtained by cutting along section line AA.

[0039] Figure 5 yes Figure 3 A cross-sectional view of another part of the headphone head.

[0040] Figure 6 This is a schematic diagram showing the connection between the first button panel and the light guide in some embodiments of the present invention.

[0041] Figure 7 yes Figure 4 Enlarged view of section I in the middle.

[0042] Figure 8 yes Figure 5 Enlarged view of section II.

[0043] Figure 9 This is a three-dimensional schematic diagram of a light guide component according to some embodiments of the present invention.

[0044] Figure 10 yes Figure 9 The diagram shows a cross-sectional view of the light guide component.

[0045] Figure 11 yes Figure 9 The front view of the light guide shown.

[0046] Figure 12 This is a schematic diagram showing the position of the back cover and the second circuit assembly in some embodiments of the present invention. Detailed Implementation

[0047] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0048] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] Some embodiments of the present invention provide an earphone head, which may be, for example, the earphone head of a bone conduction headphone. Figure 1 A bone conduction headphone is shown, comprising two earpieces 90, two functional compartments 91, two ear hooks 92, and a back hook 93 connected between the two functional compartments 91. The earpieces 90 and the functional compartments 91 are connected by the ear hooks 92. When worn, the back hook 93 wraps around the back of the head, the two ear hooks 92 are respectively hung on the two ears, and the two earpieces 90 are in contact with the facial skin and are held on both sides of the face by the elastic force of the ear hooks 92 and the back hook 93.

[0051] The earphone head 90 has a bone conduction sound device 7 (see reference). Figure 4 It can be equipped with only a bone conduction sound generator 7, or it can be equipped with both a bone conduction sound generator 7 and an air conduction sound generator. When only a bone conduction sound generator 7 is provided, the headphones can transmit sound through bone conduction. When both a bone conduction sound generator 7 and an air conduction sound generator are provided, the headphones can transmit sound through bone conduction and / or air conduction.

[0052] Functional compartment 91 is used to house the main control circuit board and / or battery. In some embodiments, of the two functional compartments 91, one is a control compartment 91a and the other is a battery compartment 91b. The main control circuit board is installed in the control compartment 91a, and the battery compartment 91b contains a battery. The main control circuit board mainly serves a control function, and the battery mainly provides power. One of the two earphone heads 90 is connected to the control compartment 91a via an ear hook 92, and the other is connected to the battery compartment 91b via another ear hook 92. Wires for transmitting power and signals are provided in the ear hooks 92 and the back hook 93.

[0053] In some embodiments, such as Figures 2 to 5 As shown, the earphone head 90 includes a housing assembly 1, a first circuit assembly, and a first button panel 3.

[0054] The outer shell assembly 1 is composed of two or more shells connected together. In the illustrated embodiment, the outer shell assembly 1 includes three shells, namely a back cover 11, a front cover 12 and a middle frame 13. The middle frame is annular and is connected between the back cover 11 and the front cover 12. When the bone conduction headphones are worn, the front cover 12 is used to contact the facial skin, while the back cover 11 is set away from the facial skin.

[0055] like Figure 5 As shown, the first circuit assembly includes a first circuit board 20 connected to the housing assembly 1 and a first sensor 21 disposed on the first circuit board 20. Both the first circuit board 20 and the first sensor 21 are located inside the housing assembly 1. In the illustrated embodiment, there are two first sensors 21, which are disposed at an interval on the first circuit board 20. The present invention is described below using two first sensors 21 as an example. It is understood that in other embodiments, there may be only one first sensor 21, or there may be more than three first sensors 21.

[0056] The first button panel 3 is located outside the housing assembly 1 and connected to it. The first button panel 3 is used to trigger the first sensor 21. To facilitate triggering the first sensor 21, the first button panel 3 includes an abutment protrusion 30 for triggering the first sensor 21. The abutment protrusion 30 protrudes towards the side where the first sensor 21 is located. When the portion of the first button panel 3 corresponding to the abutment protrusion 30 is pressed, the abutment protrusion 30 can trigger the first sensor 21. It can be understood that the first sensor 21 and the first circuit board 20 are electrically connected. The first circuit board 20 is electrically connected to the main control circuit board inside the control compartment 91a. The main control circuit board can calculate a control signal based on the signal from the first sensor 21 and perform corresponding control on the bone conduction headphones. The number of abutment protrusions 30 corresponds to the number of first sensors 21. When there are two first sensors 21, the first button panel 3 includes two abutment protrusions 30 for triggering the first sensors 21.

[0057] like Figure 4 and Figure 5 As shown, the indicator light assembly includes a light-emitting element 40 disposed on the first circuit board 20 and a light guide element 41 corresponding to the light-emitting element 40. The light-emitting element 40 is located between two first sensors 21 (when there are three or more first sensors 21, the light-emitting element 40 only needs to be located between two of the first sensors 21). The light guide element 41 is connected to both the housing assembly 1 and the first button panel 3. The light emitted by the light-emitting element 40 transmitted by the light guide element 41 can be observed from the outside of the first button panel 3. Specifically, the light-emitting element 40 can be powered on and emit light, which is positioned towards the bottom of the light guide element 41. After emitting light, the light enters the light guide element 41, is transmitted through the light guide element 41, and is emitted outward, so that it can be recognized by the human eye from the outside of the first button panel 3. The light-emitting element 40 can be, for example, an LED light bead, and the light guide element 41 can be, for example, made of transparent or translucent material.

[0058] Since the light-emitting element 40 is located on the first circuit board 20 and adjacent to the first sensor 21 (located between the two first sensors 21), and the light guide element 41 is connected between the housing assembly 1 and the first button panel 3, the indicator light assembly is actually integrated into the button assembly (including the first button panel 3 and the first circuit assembly), hardly taking up any extra space. This greatly improves the integration and compactness of the button and indicator light assemblies, which is beneficial to the miniaturization of the headphone head.

[0059] Furthermore, the first button panel 3 is connected to the housing assembly 1 via a light guide 41, which enhances the connection strength between them. Figure 5 and Figure 6As shown, the first button panel 3 includes a fixed part 32 connected to the light guide 41 and two cantilever parts 34 located at both ends of the fixed part 32. Each cantilever part 34 has an abutment protrusion 30 to trigger the first sensors 21 located on both sides of the light-emitting element 30. Specifically, the two abutment protrusions 30 corresponding to the two first sensors 21 on both sides of the light-emitting element 30 are respectively located on the two cantilever parts 34. When the cantilever part 34 is pressed, it bends and deforms, causing the abutment protrusions 30 to move towards the first sensor 21 to trigger it. The fixed part 32 and the outer shell assembly 1 are connected by the light guide 41, forming a cantilever structure on both sides. In addition to guiding light, the light guide 41 also connects the fixed part 32 and the outer shell assembly 1, increasing the connection strength, resulting in a more compact overall structure.

[0060] In some embodiments, the light guide 41 is embedded in the first button panel 3 to improve its connection strength with the first button panel 3 and to make the overall structure more compact. Figures 6 to 9 As shown, the housing assembly 1 is provided with a first mounting hole 1000 connecting its inner and outer sides, the first button panel 3 is provided with a second mounting hole 31, and the light guide 41 includes a light receiving part 410 located in the first mounting hole 1000 and a light emitting part 411 located in the second mounting hole 31 (that is, the light guide 41 is partially embedded in the housing assembly 1 and partially embedded in the first button panel 3). The light receiving part 410 is relatively close to the light emitting part 40 and is arranged directly opposite to the light emitting part 40 to receive the light from the light emitting part 40, while the light emitting part 411 is close to the external space to emit the light to the outside.

[0061] Optionally, the light guide 41 is exposed from the first button panel 3, that is, the second mounting hole 31 connects to the outer surface of the first button panel 3, so that the light from the light guide 41 can be directly emitted to the outside, enhancing the observed brightness. In some embodiments, the light guide 41 is flush with the outer surface of the first button panel 3. Optionally, the surface of the light guide 41 exposed on the first button panel 3 and the outer surface of the first button panel 3 where the light guide 41 is exposed are provided with a light-transmitting paint (e.g., by spraying). When the light guide 41 is illuminated, its light can be emitted through the light-transmitting paint. When the light guide 41 is not illuminated, the colors of the first button panel 3 and the light guide 41 observed from the outside are the same, both being the color of the light-transmitting paint. That is, when not illuminated, it is difficult to identify the presence of the light guide 41, resulting in better consistency in appearance and effectively increasing the overall aesthetics.

[0062] In some embodiments, such as Figure 5 and Figure 9As shown, the light guide 41 is strip-shaped as a whole, and its light receiving part 410 and light emitting part 411 are also strip-shaped. The two abutting protrusions 30 are located on the outer sides of both ends of the light guide 41 in the length direction. On the one hand, it increases the light transmission area of ​​the light guide 41, making it easier to identify. On the other hand, it can increase the firmness of the connection between the first button panel 3 and the housing assembly 1. When the cantilever part 34 is pressed, the light guide 41 is better subjected to force and is not easy to bend and break in the length direction, which can effectively improve the reliability of use.

[0063] like Figure 3 , Figure 5 and Figure 6 As shown, the first button panel 3 is strip-shaped, and the light guide 41 extends along the length of the first button panel 3. In this way, the length of the light guide 41 can be made longer, while ensuring the length of the cantilever 34, so that the cantilever 34 can be pressed down more effortlessly to trigger the button.

[0064] In some embodiments, the light-receiving part 410 and the light-emitting part 411 are directly connected and offset along the width direction of the light guide 41, such as... Figure 7 and Figure 10 As shown, the light-emitting portion 411 is closer to the outer side of the first button panel 3 in the width direction than the light-receiving portion 410, thus forming two opposing slots 413 at opposite upper and lower angles. Since the length of the light guide 41 is greater than the length of the light-emitting element 40, the brightness of the portion of the light guide 41 directly opposite the light-emitting element 40 will be brighter, resulting in uneven brightness. By setting the staggered light-emitting portion 411 and light-receiving portion 410, the reflection of light within the light guide 41 can be increased, thereby improving the overall brightness uniformity. Optionally, the width W1 of the light-receiving portion 410 is greater than the width W2 of the light-emitting portion 411, and the length L1 of the light-receiving portion 410 is less than the length L2 of the light-emitting portion 411. A wider light-receiving portion 410 can increase the light-entry area of ​​the light-emitting element 40, while a narrower light-receiving portion 410 can increase the overall brightness of the emitted light. Increasing the length of the light-receiving portion 410 can increase the light-emitting area and improve the firmness of the connection with the first button panel 3.

[0065] It is understandable that the light guide 41 is integrally molded. Optionally, the light emitting portion 411 is partially located above the top surface 4100 of the light receiving portion 410 facing the first button panel 3, and partially extends below the top surface 4100. In this way, the minimum thickness B1 of the light guide 41 is increased, such as... Figure 10 As shown, Figure 10The interface 412 between the light-emitting part 411 and the light-receiving part 410 is illustrated by a dashed line. Since the light-receiving part 410 and the light-emitting part 411 overlap in the height direction, the interface 412 is inclined. This increases the width of the interface 412 (i.e., the thickness B1 of the light guide 41 at this location), improves the structural strength of the light guide 41, and allows light to be transmitted to the light-emitting part 411 more efficiently, thereby improving both the uniformity and brightness of the light. Optionally, the light-receiving part 410 can be partially embedded in the first button panel 3, which can reduce the stress at the interface 412 and decrease the possibility of breakage at the connection between the light-emitting part 411 and the light-receiving part 410.

[0066] Optional, such as Figure 6 and Figure 7 As shown, the first button panel 3 also includes an external protrusion 33 disposed on the fixing part 32. The outer shell assembly 1 is provided with a mounting groove 1002 corresponding to the external protrusion 33. The external protrusion 33 is inserted into the mounting groove 1002 and fixedly connected to the outer shell assembly 1. By providing an external protrusion 33 connected to the outer shell assembly 1 on the first button panel 3, the connection strength between the first button panel 3 and the outer shell assembly 1 can be increased, the force on the light guide 41 when the cantilever part 34 is pressed can be shared, and the risk of deformation and cracking of the light guide 41 can be reduced, thereby improving the reliability and service life. Optionally, the first button panel 3 is integrally formed.

[0067] Optionally, the protrusion 33 and the light-collecting portion 410 are arranged parallel to and spaced apart along the width direction of the first button panel 3. This can significantly reduce the bending and twisting deformation of the first button panel 3 in the width direction when the cantilever portion 34 is pressed. Since the light guide 41 is narrow and has poor strength in the width direction, the protrusion 33 can effectively prevent the light guide 41 from bending or breaking in the width direction. Optionally, the light-collecting portion 410 is located in the middle of the width direction of the first button panel 3, and the protrusion 33 is closer to the edge of the width direction of the first button panel 3.

[0068] Optionally, the protrusion 33 is a strip extending along the length of the first button panel 3 to improve its structural strength. The length L1 of the protrusion 33 is not less than 80% of the length L2 of the light-receiving part 410 to give it better structural strength and improve the reliability of force distribution. Further, the length of the protrusion 33 is equal to the length of the light-receiving part 410, and the ends of both are flush to further improve the force distribution effect on the light guide 41. Even further, the length of the protrusion 33 is greater than the length of the light-receiving part 410, and the two ends of the protrusion 33 extend beyond the two ends of the light-receiving part 410. When the cantilever part 34 is pressed, the force can be mainly borne by the protrusion 33, which can better protect the light guide 41.

[0069] Optionally, the protrusion 33 and the mounting groove 1002 are fixedly connected by adhesive, and the mounting groove 1002 does not penetrate into the interior of the housing assembly 1 to ensure waterproofing at that location.

[0070] Optionally, the light guide 41 and the first button panel 3 are molded using a two-color injection molding process to ensure waterproofing. The light guide 41 and the first mounting hole 1000 are connected by adhesive, achieving a seal and waterproofing through the glue. Optionally, the outer surface of the housing assembly 1 is provided with a glue groove 1001 communicating with the first mounting hole 1000. The glue groove 1001 is filled with glue, which can effectively prevent liquid from seeping into the first mounting hole 1000, effectively improving the waterproofing effect. During assembly, the light guide 41 and the first button panel 3 are pre-assembled together using a two-color injection molding process, and then the light guide 41 and the first button panel 3 are installed as a whole onto the housing assembly 1, which is very convenient.

[0071] In some embodiments, both the first circuit assembly and the first button panel 3 are connected to the back cover 11, and the first button panel 3 is located on the back of the back cover 11 for easy pressing. Figure 5 and Figure 10 As shown, the back cover 11 includes a mounting plate 10 located on its back side, with the first button panel 3 and the first circuit assembly located on opposite sides of the mounting plate 10 and separated by the mounting plate 10. In other embodiments, the first circuit assembly and the first button panel 3 may also be disposed on other housings.

[0072] like Figure 7 , Figure 8 and Figure 12 As shown, the first mounting hole 1000, the adhesive groove 1001, and the mounting slot 1002 are all provided on the mounting plate 10. Optionally, the mounting plate 10 is provided with a mounting base 100 protruding towards the first button panel 3. The fixing part 32 fits against the mounting base 100 and is supported by the mounting base 100. The mounting base 100 can raise the height of the first button panel 3, so that there is sufficient space between the cantilever part 34 and the mounting plate 10 for the cantilever part 34 to bend. At the same time, the first mounting hole 1000, the adhesive groove 1001, and the mounting slot 1002 are all provided on the mounting base 100. Since the mounting base 100 is relatively thick, the depth of the first mounting hole 1000 and the mounting slot 1002 can be made larger. In this way, the mating length between the light guide 41 and the first mounting hole 1000 is larger, the waterproof effect is better, and the connection strength between the protruding part 33 and the mounting slot 1002 is also better.

[0073] In some embodiments, the first sensor 21 is a pressure sensor, the first circuit board 20 is a flexible circuit board, the mounting plate 10 separates the circuit board assembly and the abutment protrusion 30, the first circuit board 20 is connected to the inner surface of the mounting plate 10, and the abutment protrusion 30 corresponds to the position of the first sensor 21. After the cantilever portion 34 is pressed down, the abutment protrusion 30 applies pressure to the mounting plate 10, and the first sensor 21 deforms under the force to generate an electrical signal. Optionally, a soft pad 35 is provided between the abutment protrusion 30 and the mounting plate 10 to avoid damage caused by hard compression and to improve the pressing feel. The material of the soft pad 35 can be, for example, silicone. Optionally, such as Figure 7 and Figure 8 As shown, the first circuit assembly also includes a reinforcing sheet 22 that is attached to the first circuit board 20. The reinforcing sheet 22 may be made of stainless steel, for example, to enhance the rigidity of the flexible circuit board and facilitate the attachment of the first circuit assembly to the mounting plate 10.

[0074] In some embodiments, such as Figure 2 and Figure 4 As shown, the earphone head also includes a second circuit assembly and a second button panel 6 located on both sides of the mounting plate 10. It can be understood that the second button panel 6 is located on the outside of the mounting plate 10 for easy pressing by hand. The second circuit assembly includes a second circuit board 50 located within the housing assembly 1 and a second sensor 51 disposed on the second circuit board 50. The second button panel 6 is used to trigger the second sensor 51. Optionally, the second sensor 51 is a microswitch.

[0075] like Figure 4 and Figure 12 As shown, the mounting plate 10 has a through hole 1003 corresponding to the position of the second sensor 51. The second button panel 6 and the mounting plate 10 are connected by an elastic pad 1004. The elastic pad 1004 seals the space between the through hole 1003 and the second button panel 6, and provides a spring force to drive the second button panel 6 to reset. It can be understood that the second button panel 6 can be a single component or composed of multiple components connected together.

[0076] The first button panel 3 and the second button panel 6 are arranged side by side, along the width of the first button panel 3, to make full use of the space behind the earphone head. The structure design, in which the light guide 41 is integrated on the first button panel 3 and the light-emitting element 40 is integrated on the first circuit board 20, enables the earphone head to still achieve the function of light indication even though two button panels are set on the back of the earphone head, and the light-emitting area is relatively large.

[0077] Optionally, the first button panel 3 can perform operations such as volume up and down, and the second button panel 6 can perform operations such as power on and off.

[0078] Optionally, the second circuit board 50 is a rigid circuit board, and the first circuit board 20 is electrically connected to the second circuit board 50. The second circuit board 50 is electrically connected to the main control circuit board in the control compartment 91a. For example, the second circuit board 50 and the first circuit board 20 are connected by a cable in the ear hook 92.

[0079] Understandably, the first sensor 21 could also be a micro switch. In this case, a similar through hole and elastic pad could be provided on the mounting plate 10 so that the abutment protrusion 30 could trigger the first sensor 21. Similarly, the second sensor 51 could also be a pressure sensor.

[0080] The main beneficial effects of the structures described in the above embodiments will be summarized below. It should be understood that the beneficial effects are not limited thereto.

[0081] First, by placing the light-emitting element 40 between the two first sensors 21 and connecting the light guide element 41 to both the housing assembly 1 and the first button panel 3, the indicator light assembly achieves auxiliary fixation of the button panel with almost no additional space occupation. This "integrated light and button" layout avoids the need for a separate indicator light window on the headphone head, which is beneficial for miniaturization and a simple appearance.

[0082] Secondly, the light guide 41 adopts a strip-shaped structure, with its light-receiving part 410 embedded in the first mounting hole 1000 and its light-emitting part 411 embedded in the second mounting hole 31. The light-receiving part 410 and the light-emitting part 411 are misaligned in the width direction and partially overlap in the height direction. This combined design brings multiple benefits: the misaligned structure increases the reflection path of light within the light guide, making the light emission more uniform; the overlap in the height direction increases the minimum thickness of the light guide, enhancing structural strength; and the strip-shaped shape increases the light-emitting area, making the indicating effect more obvious.

[0083] Furthermore, the first button panel 3 adopts a "fixed part + cantilever part" structure. The light guide 41 is connected to the fixed part 32, and the protruding part 33 is also set on the fixed part 32 and fixed to the mounting groove 1002 of the housing assembly 1. The light guide 41 and the protruding part 33 are arranged parallel to each other along the width direction of the first button panel 3, and both share the tensile force and bending moment generated when pressed. Compared with the connection of only the light guide, the addition of the protruding part can reduce the stress peak of the light guide when pressed in the cantilever part by about 40%, which significantly reduces the risk of cracking of the light guide.

[0084] Finally, the above features are interdependent, enabling the present invention to achieve miniaturization, aesthetics, and high strength while ensuring the reliability of button operation and the visibility of indicator lights.

[0085] The present invention also proposes a bone conduction headphone, which includes the headphone head 90 described above. In some embodiments, the bone conduction headphone can be as follows: Figure 1The bone conduction headphones shown above can be referred to for a description of their structure.

[0086] It should be noted that, in the absence of conflict, the various embodiments described herein can be combined with each other to obtain more implementation schemes.

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

Claims

1. An earphone head, characterized in that, include: Housing assembly (1); The first circuit assembly includes a first circuit board (20) connected to the housing assembly (1) and a first sensor (21) disposed on the first circuit board (20), wherein the first circuit board (20) and the first sensor (21) are both located inside the housing assembly (1); A first button panel (3) is disposed outside the housing assembly (1) and connected to the housing assembly (1). The first button panel (3) is used to trigger the first sensor (21); and, The indicator light assembly includes a light-emitting element (40) disposed on the first circuit board (20) and a light guide element (41) disposed corresponding to the light-emitting element (40). The light guide element (41) is connected to both the housing assembly (1) and the first button panel (3). The light emitted by the light-emitting element (40) transmitted by the light guide element (41) can be observed from the outside of the first button panel (3).

2. The earphone head as described in claim 1, characterized in that, The light guide (41) is embedded in the first button panel (3). The light guide (41) is exposed from the first button panel (3); The light guide (41) is exposed on the surface of the first button panel (3), and the outer surface of the first button panel (3) where the light guide (41) is exposed is coated with a light-transmitting paint.

3. The earphone head as described in claim 1, characterized in that, The number of first sensors (21) disposed on the first circuit board (20) is two or more, and the light-emitting element (40) is located between two of the first sensors (21).

4. The earphone head as described in claim 3, characterized in that, The outer casing assembly (1) is provided with a first mounting hole (1000) connecting its inner and outer sides, and the first key panel (3) is provided with a second mounting hole (31). The light guide (41) includes a light receiving part (410) disposed in the first mounting hole (1000) and a light emitting part (411) disposed in the second mounting hole (31). The light receiving part (410) and the light emitting part (411) are both strip-shaped and extend along the length direction of the first key panel (3).

5. The earphone head as described in claim 4, characterized in that, The light receiving part (410) and the light emitting part (411) are directly connected and are offset along the width direction of the light guide (41).

6. The earphone head as described in claim 5, characterized in that, The width W1 of the light receiving part (410) is greater than the width W2 of the light emitting part (411), and the length L1 of the light receiving part (410) is less than the length L2 of the light emitting part (411).

7. The earphone head as described in claim 5, characterized in that, The light guide (41) is integrally formed, and its light-emitting part (411) is located above the top surface (4100) of the light-receiving part (410) facing the first button panel (3), and extends to a position below the top surface (4100).

8. The earphone head as described in claim 5, characterized in that, The first button panel (3) is strip-shaped and includes a fixed part (32) connected to the light guide (41) and two cantilever parts (34) located at both ends of the fixed part (32). The first button panel (3) includes an abutting protrusion (30) for triggering the first sensor (21). The abutting protrusion (30) is provided on both cantilever parts (34) to trigger the first sensor (21) located on both sides of the light-emitting element (40) respectively.

9. The earphone head as described in claim 8, characterized in that, The light-collecting part (410) is partially embedded in the fixing part (32).

10. The earphone head as described in claim 8, characterized in that, The first button panel (3) also includes an external protrusion (33) disposed on the fixing part (32). The outer shell assembly (1) is provided with a mounting groove (1002) corresponding to the external protrusion (33). The external protrusion (33) is inserted into the mounting groove (1002) and fixedly connected to the outer shell assembly (1).

11. The earphone head as described in claim 10, characterized in that, The housing assembly (1) includes a mounting plate (10) located on its back side, the mounting plate (10) having a mounting seat (100) protruding toward the first button panel (3), the fixing part (32) being supported by the mounting seat (100), and the first mounting hole (1000) and the mounting groove (1002) both being provided on the mounting seat (100).

12. The earphone head as described in claim 10, characterized in that, The protruding part (33) is a strip extending along the length direction of the first button panel (3). The protruding part (33) and the light guide (41) are spaced apart along the width direction of the first button panel (3). The mounting groove (1002) does not penetrate into the interior of the housing assembly (1).

13. The earphone head as described in claim 12, characterized in that, The length of the protruding member (33) is equal to the length of the light-collecting part (410), and the ends of both are flush; or, The length of the protruding member (33) is greater than the length of the light-collecting part (410), and the end of the protruding member (33) extends beyond the end of the light-collecting part (410).

14. The earphone head as described in claim 4, characterized in that, The outer surface of the housing assembly (1) is provided with a glue groove (1001) communicating with the first mounting hole (1000). The light guide (41) is glued to the housing assembly (1), and the glue groove (1001) is filled with glue.

15. The earphone head as described in any one of claims 1 to 14, characterized in that, The first sensor (21) is a pressure sensor, the first circuit board (20) is a flexible circuit board, the first button panel (3) includes an abutting protrusion (30) corresponding to the position of the first sensor (21), the housing assembly (1) includes a mounting plate (10) separating the circuit board assembly and the abutting protrusion (30), the first circuit board (20) is connected to the inner surface of the mounting plate (10), and a soft pad (35) is provided between the abutting protrusion (30) and the mounting plate (10).

16. The earphone head as described in any one of claims 1 to 14, characterized in that, The housing assembly (1) includes a mounting plate (10) located on its back, and the first button panel (3) and the first circuit assembly are both connected to the mounting plate (10). The earphone head also includes a second circuit assembly and a second button panel (6) located on both sides of the mounting plate (10). The second circuit assembly includes a second circuit board (50) located inside the housing assembly (1) and a second sensor (51) disposed on the second circuit board (50). The second button panel (6) is used to trigger the second sensor (51). The first button panel (3) and the second button panel (6) are arranged side by side. The first circuit board (20) is a flexible circuit board and is electrically connected to the second circuit board (50).

17. A bone conduction headphone, characterized in that, Includes the headphone head as described in any one of claims 1 to 16.

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