Earphones, assembly jig, and method for manufacturing earphones

Abstract

This invention provides earphones, assembly jigs, and a method for manufacturing earphones that improve the user experience. [Solution] An earphone 31 having a centrally symmetrical shape, comprising an earplug 311, an earphone front housing assembly 313, an earphone magnet, a first electrode 312, a second electrode 314, and an earphone rear housing assembly 315. The earphone magnet is a ring structure surrounding the centerline of the earphone and is fixed to the inner wall of the earphone front housing. Both the first electrode and the second electrode are located on the outside of the earphone and are ring structures surrounding the centerline of the earphone. The first electrode and the second electrode are fixed to two opposing ends of the earphone front housing, respectively. The user can insert the earphone and store the earphone in the earphone case at random angles, reducing restrictions on user operation and improving the user experience.

Description

Technical Field

[0001] This application claims the priority of Chinese Patent Application No. 202111677020.9, titled "EARPHONE, ASSEMBLY JIG, AND EARPHONE MANUFACTURING METHOD", filed with the China National Intellectual Property Administration on December 31, 2021, and incorporates the whole thereof herein by reference. [Technical Field]

[0002] This application relates to the field of electronic devices, and particularly to earphones, assembly jigs, and earphone manufacturing methods.

Background Art

[0003] Due to the appearance and structural limitations of existing stemmed true wireless stereo (TWS) earphones, users need to wear the earphones correctly only at a specific angle, and when storing the earphones, users also need to store the earphones in the earphone case at a specific angle. This design brings inconvenience to users.

Summary of the Invention

[0004] Embodiments of this application provide earphones, assembly jigs, and earphone manufacturing methods that allow users to wear the earphones and store the earphones in the earphone case at random angles, reduce restrictions on user operations, and improve the user experience.

[0005] According to a first aspect, one embodiment of the present application provides an earphone. The earphone has a centrally symmetrical shape. The earphone includes an earphone front housing, an earphone magnet, a first electrode, and a second electrode. The earphone magnet is a ring structure surrounding the centerline of the earphone and is fixed to the inner wall of the earphone front housing. Both the first electrode and the second electrode are located on the outside of the earphone and are ring structures surrounding the centerline of the earphone. The first electrode and the second electrode are fixed to two opposing ends of the earphone front housing, respectively. The external structure of the earphone in this solution allows the earphone to be worn and stored in the earphone case at random angles, and ensures that the earphone case charges the earphone properly when the earphone is stored in the earphone case at random angles. In addition, an earphone magnet having a ring structure surrounding the centerline of the earphone is designed, and the earphone magnet can magnetically attract magnets in the earphone case. When a user places the earphones in the earphone case, magnetic attraction automatically positions the earphones, allowing the user to place them in the designated position without having to precisely align them. Therefore, this solution improves the user experience.

[0006] In one implementation of the first embodiment, the first electrode is either a closed ring structure or an open ring structure. This electrode design ensures proper charging of the earphones when they are randomly placed.

[0007] In one implementation of the first embodiment, the first electrode has an open ring structure and comprises at least two first electrodes, which are arranged in pairs with a gap between them and distributed on the same circle. This electrode design ensures normal charging of the earphones when they are randomly placed.

[0008] In one implementation of the first embodiment, the earphone includes a first earphone circuit board assembly, the earphone front housing has a through hole, and the first earphone circuit board assembly is mounted to the earphone front housing. The first electrode includes a connected electrode body and a conductive portion, the conductive portion of the first electrode is located on the inner surface of the electrode body of the first electrode, the electrode body of the first electrode is fixed to the outer surface of the end of the earphone front housing, and the conductive portion of the first electrode passes through the through hole in the earphone front housing and is electrically connected to the circuit board of the first earphone circuit board assembly inside the earphone front housing. This design enables reliable mechanical and electrical connections of the first electrode.

[0009] In one implementation of the first embodiment, the earphone includes an earphone rear housing and a second earphone circuit board assembly. The second electrode includes a connected electrode body and a conductive portion, the conductive portion of the second electrode being located on the inner surface of the electrode body of the second electrode, the electrode body of the second electrode being connected to the earphone rear housing and the earphone front housing, the second earphone circuit board assembly being located in the space enclosed by the electrode body of the second electrode and the earphone rear housing, and the conductive portion of the second electrode being electrically connected to the circuit board of the second earphone circuit board assembly. This design enables reliable mechanical and electrical connections of the second electrode.

[0010] In one implementation of the first embodiment, there is one earphone magnet having a closed ring structure, or there are at least two earphone magnets, the at least two of which are spaced apart and each earphone magnet has an open ring structure. An earphone magnet is designed having a ring structure surrounding the center line of the earphone, and the earphone magnet can magnetically attract the magnet in the earphone case. When the user places the earphone in the earphone case, the earphone can be automatically positioned by magnetic attraction, so that the user can place the earphone in a predetermined position without having to precisely align the earphone.

[0011] In one implementation of the first embodiment, the earphone includes a first earphone circuit board assembly, an earplug support, and a front vent acoustic mesh. The first earphone circuit board assembly is attached to the front housing of the earphone, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earplug support is a hollow tubular structure, with one end of the earplug support having a through hole, and the wall of the earplug support is provided with a front vent, which communicates with the space inside and outside the earplug support. The front vent acoustic mesh includes a fastening region and a blocking region, the blocking region being connected to the side of the fastening region, the fastening region being joined to the front housing of the earphone and to the end of the earplug support away from the through hole of the earplug support, and the blocking region being joined to the inner wall of the earplug support to block the front vent, while the blocking region allows sound wave signals to pass through. The front vent acoustic mesh in this solution has not only the function of fixedly connecting the earplug support to the front housing of the earphone, but also an acoustic adjustment function.

[0012] In one implementation of the first embodiment, the earphone includes a first earphone circuit board assembly, an earplug support, a speaker, and a sub-microphone. The earphone front housing has a sound-collecting channel, the first earphone circuit board assembly is attached to the earphone front housing, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earplug support is a hollow tubular structure, one end of the earplug support has a through hole, the wall of the earplug support has a front ventilation hole which communicates with the space inside and outside the earplug support, the end of the earplug support away from the through hole is fixed to the earphone front housing, and the internal cavity of the earplug support communicates with the sound-collecting channel. At least a portion of the speaker is located in the internal cavity of the earplug support, the speaker is electrically connected to the circuit board of the first earphone circuit board assembly, and sound wave signals emitted from the speaker are propagated to the outside of the earphone through the through hole of the earplug support. The secondary microphone is positioned on the circuit board of the first earphone circuit board assembly and is configured to pick up noise signals entering the pickup channel through the internal cavity of the earplug support and the through-hole of the earplug support. The speaker is configured to generate an inverse signal with a signal phase opposite to that of the noise signal to achieve active noise reduction. This solution achieves active noise reduction of the earphone using an appropriate structural design.

[0013] In one implementation of the first embodiment, the speaker is further configured to emit a sound wave signal of a specific frequency, and the sub-microphone is further configured to pick up the sound wave signal of a specific frequency. The earphone includes a control unit, which is configured to determine whether the earphone is being worn based on the signal intensity of the sound wave signal of a specific frequency picked up by the sub-microphone. In this solution, the sub-microphone is reused to implement the wear detection function. This facilitates a centralized design of the internal stacking of the earphone and reduces the stacking space inside the earphone.

[0014] In one implementation of the first embodiment, the earphone includes a first earphone circuit board assembly, an earplug support, and a wear detection plate. The first earphone circuit board assembly is mounted on the front housing of the earphone, and the first electrodes are electrically connected to the circuit board of the first earphone circuit board assembly. One end of the earplug support is fixedly connected to the front housing of the earphone, and the material of the earplug support includes a conductive material. The wear detection plate is located on the front housing of the earphone, and is connected to the end of the earplug support closest to the front housing of the earphone, and is electrically connected to the circuit board of the first earphone circuit board assembly, and the wear detection plate and the earplug support are each configured to generate coupling capacitance when close to a human body. The earphone includes a control unit, which is configured to determine whether the earphone is worn based on the value of the coupling capacitance.

[0015] This solution uses both a wear detection plate and an earplug support as a detection plate for wear detection, increasing the surface area of ​​the detection plate and ensuring consistency and reliability of wear detection. Because the earplug support is closer to the inside of the ear canal than the wear detection plate, the capacitance detection data from the earplug support is more accurate and reliable. This helps improve the overall reliability of wear detection. In addition, when the earplug support is reused as a detection plate for wear detection, the overall size of the earphone is not affected, and the stacking space within the earphone can be further reduced.

[0016] In one implementation of the first embodiment, the earphone includes a first earphone circuit board assembly, on which a wear detection sensor is disposed, and a first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earphone includes a control unit, which is configured to determine whether the earphone is worn based on a detection signal from the wear detection sensor.

[0017] In one implementation of the first embodiment, the earphone includes an earplug support and an earplug, the earplug includes a connected inner earplug cover and an outer earplug cover, the inner earplug cover is sleeved around the earplug support, the outer earplug cover surrounds the inner earplug cover, a first bump is provided on the surface of the outer earplug cover facing the inner earplug cover, and a first electrode is located between the earplug and a second electrode. The first bump can increase the structural strength of the outer earplug cover and reduce the "stethoscope effect".

[0018] In one embodiment of the first aspect, the earphone includes an earplug support and an earplug. The earplug support is a hollow tubular structure, and the wall of the earplug support is provided with a front vent, which communicates with the space inside and outside the earplug support. A skirt edge is formed around the earplug support, and the front vent is adjacent to the skirt edge. The earplug includes a connected earplug outer cover and an earplug inner cover, the earplug inner cover being sleeved around the earplug support, the skirt edge being exposed to the outside of the earplug inner cover, a second bump being provided on the surface of the end of the earplug inner cover facing the skirt edge, the second bump contacting the skirt edge, and the earplug outer cover surrounding the earplug inner cover. A first electrode is located between the earplug and the second electrode. The design, in which the second bump contacts the skirt edge of the earplug support, prevents the earplug from blocking the front vent and ensures the acoustic performance of the earphone.

[0019] In one embodiment of the first aspect, the earphone includes an earphone rear housing, a third earphone circuit board assembly, and a main microphone. The earphone rear housing has sound-collecting through-holes and at least two wind noise-blocking through-holes, the sound-collecting through-holes and each wind noise-blocking through-hole communicating with the internal and external spaces of the earphone rear housing. The third earphone circuit board assembly is located in the earphone rear housing, and a second electrode is connected to the earphone rear housing and the earphone front housing. The main microphone is positioned on the circuit board of the third earphone circuit board assembly and is configured to pick up sound wave signals entering the earphone rear housing through the sound-collecting through-holes. The multiple wind noise-blocking through-holes are designed to reduce wind noise interference.

[0020] According to a second aspect, the present application provides an earphone. The earphone has a centrally symmetrical shape and includes an earphone rear housing, a third earphone circuit board assembly, an antenna, a control unit, and a switch circuit. The circuit board of the third earphone circuit board assembly has two feed points and the third earphone circuit board assembly is located in the earphone rear housing. The antenna is located in the earphone rear housing and is a common-mode antenna, and includes a first antenna branch and a second antenna branch, which are spaced apart, and each of the first and second antenna branches has a tip, the tip of the first antenna branch and the tip of the second antenna branch are each connected to one feed point, and the first antenna branch is coupled to the second antenna branch, so that the antenna operates in a specific frequency band. The control unit is configured to determine which antenna branch has better signal quality from the first and second antenna branching points, and to control the switch circuit to switch the antenna branch with better signal quality to the feed end and the other antenna branch to the ground end. In this solution, according to the switching design, the communication quality of the earphones can be ensured regardless of the angle at which the user wears the earphones, thereby guaranteeing a good user experience.

[0021] In one implementation of the second embodiment, the rear earphone housing includes a bottom wall and a circumferential side wall, the circumferential side wall surrounding the periphery of the bottom wall, and the circumferential side wall and bottom wall enclose an open cavity. The first antenna branch is bent and connected and includes a first segment and a second segment, the tip of the first antenna branch is the end of the first segment separated from the second segment, the first segment is fixed to the circumferential side wall and the second segment is fixed to the bottom wall. In this solution, the antenna structure can be adapted to the structure of the rear earphone housing, and the antenna can be positioned using the space of the rear earphone housing appropriately.

[0022] In one implementation of the second embodiment, the second segment has a bent shape, extending from the end of the second segment closest to the first segment to the end of the second segment furthest from the first segment, and the second segment extends in the direction from the circumferential sidewall toward the bottom wall, or in the direction from the bottom wall toward the circumferential sidewall. This solution ensures antenna performance by appropriately designing the antenna topology structure.

[0023] In one implementation of the second embodiment, the second antenna branch is bent and connected to include a third segment and a fourth segment, the tip of which is the end of the third segment away from the fourth segment, the third segment being fixed to the circumferential side wall and the fourth segment being fixed to the bottom wall. The fourth segment has a bent shape, extending from the end of the fourth segment near the third segment to the end of the fourth segment far from the third segment, and the fourth segment extends in the direction from the circumferential side wall to the bottom wall, or the fourth segment extends in the direction from the bottom wall to the circumferential side wall. This solution appropriately designs the topological structure of the antenna and ensures antenna performance.

[0024] In one implementation of the second embodiment, the first antenna branch and the second antenna branch each have a tail end, the tail end and the tip of the first antenna branch are two opposing ends of the first antenna branch, and the tail end and the tip of the second antenna branch are two opposing ends of the second antenna branch. The tail end or tip of the first antenna branch is coupled to the tail end or tip of the second antenna branch. This solution ensures antenna performance by appropriately designing the antenna coupling method.

[0025] In one implementation of the second embodiment, the two feed points on the circuit board of the third earphone circuit board assembly are symmetrical with respect to the center line of the earphone. In this solution, since the tips of the two antenna branching points are basically center-symmetrical, consistency in the performance of the two antenna branching points can be ensured, thereby ensuring the communication quality of the earphone.

[0026] According to a third aspect, the present application provides an assembly jig for use in an earphone. The earphone includes an earphone front housing and at least two earphone magnets, and the assembly jig includes a base, a jig magnet, and an upper cover. The base has a workpiece positioning groove and a jig magnet mounting groove, the workpiece positioning groove is configured to accommodate the earphone front housing, the number of jig magnet mounting grooves corresponds to the number of earphone magnets, all jig magnet mounting grooves are distributed spaced apart outside the workpiece positioning groove and communicate with the workpiece positioning groove. The number of jig magnets corresponds to the number of earphone magnets, with one jig magnet corresponding to one jig magnet mounting groove. The upper cover includes a cover plate and an upper cover limiting rod, the cover plate is provided with through holes for magnet placement, the number of which matches the number of magnets for the earphone, the axis of each through hole is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side surface of the cover plate in the thickness direction, the upper cover limiting rod has limiting portions, the number of which matches the number of magnets for the earphone, and the projection of one limiting portion in the axial direction of the through hole for magnet placement corresponds to one through hole for magnet placement. The upper cover is detachably connected to the base, the cover plate is in contact with the base, the projections of different regions of the workpiece positioning groove in the axial direction of the through hole for magnet placement each enter the through hole for magnet placement, the upper cover limiting rod extends within the workpiece positioning groove, each limiting portion is positioned at a distance from the side wall of the workpiece positioning groove, and each limiting portion is configured to form a gap with the inner wall of the earphone front housing positioned in the workpiece positioning groove. Each magnet placement through-hole is configured to allow one earphone magnet to be placed within the assembly jig, each gap is configured to allow one earphone magnet to be placed within the earphone front housing, and each jig magnet is configured to magnetically attract the earphone magnet placed within the earphone front housing. In this solution, the assembly jig is designed so that the earphone magnet can be attached to the earphone front housing accurately, reliably, and easily.

[0027] In one implementation of the third aspect, all jig magnet mounting grooves are evenly distributed at equal intervals outside the workpiece positioning groove. This design ensures that the magnetic attraction force of the jig magnet on the magnet for the earphone is uniform and constant.

[0028] In one implementation of the third aspect, the base is provided with upper cover positioning holes, the upper cover includes an upper cover positioning rod connected to the cover plate, the upper cover positioning rod and the upper cover limiting rod are located on the same side of the cover plate, and when the upper cover is detachably connected to the base, the upper cover positioning rod is inserted into the upper cover positioning hole. This design can ensure a reliable connection between the upper cover and the base.

[0029] In one implementation of the third aspect, the base has a base magnet, the upper cover includes an upper cover magnet fixed to the cover plate, and when the upper cover is detachably connected to the base, the upper cover magnet magnetically attracts the base magnet. This design can ensure a reliable connection between the upper cover and the base.

[0030] In one implementation of the third aspect, the base is provided with a clamp accommodation groove, and the clamp accommodation groove communicates with the workpiece positioning groove. The assembly jig includes a clamp, and a part of the clamp is configured to clamp the front housing of the earphone. When the upper cover is detachably connected to the base, both a part of the clamp and the front housing of the earphone clamped by the clamp are accommodated in the workpiece positioning groove, and the other part of the clamp is accommodated in the clamp accommodation groove. In this solution, the clamp can be used to clamp the front housing of the earphone, so the front housing of the earphone can be placed in the assembly jig. In addition, the clamp can also be used at another assembly station within the earphone.

[0031] According to a fourth aspect, the present application provides a method for manufacturing earphones. The assembly jig is used to assemble at least two earphone magnets in the earphone front housing of the earphones. The manufacturing method includes the steps of: positioning the earphone front housing in a workpiece positioning groove of an assembly jig; attaching the upper cover of the assembly jig to the base such that the cover plate contacts the base, the protrusions in different areas of the earphone front housing in the axial direction of the magnet placement through holes each enter into the magnet placement through holes, the upper cover limiting rod extends into the earphone front housing, and each limiting portion forms a gap with the inner wall of the earphone front housing; attaching all the earphone magnets to the earphone front housing, wherein one earphone magnet is attached to a corresponding position in the earphone front housing via one magnet placement through hole and one gap corresponding to the magnet placement through hole, and one jig magnet attaches one earphone magnet corresponding to the jig magnet to the inner wall of the earphone front housing; removing the upper cover from the base; fixing each earphone magnet to the inner wall of the earphone front housing; and removing the earphone front housing to which the earphone magnets are attached from the base. This solution allows for the precise, reliable, and simple attachment of the earphone magnet to the front housing of the earphone.

[0032] In one implementation of the fourth embodiment, the step of permanently connecting each earphone magnet to the inner wall of the earphone front housing includes the step of joining each earphone magnet to the inner wall of the earphone front housing using a dispensing technique. This solution ensures that the earphone magnets are securely fixed in the earphone front housing. [Brief explanation of the drawing]

[0033] [Figure 1] This is a schematic diagram of an assembly structure of a wearable device according to one embodiment of the present application. [Figure 2] This is a schematic diagram of an assembly structure of a wearable device according to one embodiment of the present application. [Figure 3]This is a schematic diagram of an assembly structure of a wearable device according to one embodiment of the present application. [Figure 4] This is a schematic diagram of an assembly structure of a wearable device according to one embodiment of the present application. [Figure 5] This is a schematic diagram of an assembly structure of a wearable device according to one embodiment of the present application. [Figure 6] This is a schematic exploded view of the structure of a wearable device according to one embodiment of this application. [Figure 7] Figure 6 is a schematic diagram of the assembly structure of the first host housing of the wearable device. [Figure 8] Figure 7 is a schematic exploded view of the structure of the first host enclosure. [Figure 9] Figure 6 is a schematic diagram of the assembly structure of the first host housing of the wearable device. [Figure 10] Figure 8 is a schematic diagram showing the assembly structure of the locking portion of the first host housing. [Figure 11] Figure 8 is a schematic exploded view of the structure of the magnet assembly of the first host enclosure. [Figure 12] Figure 8 is a schematic diagram of the structure of the seal bracket of the first host enclosure. [Figure 13] Figure 9 is a schematic diagram of the AA cross-sectional structure of the first host enclosure. [Figure 14] This is a schematic diagram of a partially enlarged structure at position B in Figure 13. [Figure 15] Figure 6 is a schematic diagram of the structure of the first host circuit board assembly of the wearable device. [Figure 16] Figure 6 is a schematic diagram of the structure of the second host housing of the wearable device. [Figure 17] Figure 6 is a schematic diagram of the structure of the second host housing of the wearable device. [Figure 18] Figure 17 is a schematic exploded view of the structure of the second host enclosure. [Figure 19] Figure 16 is a schematic diagram of the structure of the second bracket of the second host enclosure. [Figure 20]This is a schematic diagram of the assembly structure including the second host enclosure and the host battery. [Figure 21] Figure 6 is a schematic diagram of the assembly structure of the third host housing of the wearable device. [Figure 22] Figure 6 is a schematic diagram of the assembly structure of the third host housing of the wearable device. [Figure 23] This is a schematic diagram of a partially enlarged structure at position A in Figure 22. [Figure 24] Figure 6 is a schematic diagram of the assembly structure of the third host housing of the wearable device. [Figure 25] Figure 6 is a schematic diagram of the assembly structure of the open button for the wearable device. [Figure 26] Figure 25 is a schematic exploded view of the structure of the open button. [Figure 27] Figure 25 is a schematic diagram of the structure of the open button cap. [Figure 28] Figure 25 is a schematic diagram of the structure of the button support for the open button. [Figure 29] Figure 25 is a schematic diagram of the structure of the touch-sensitive spring of the open button. [Figure 30] This is a schematic diagram of the assembly structure including the open button and the third host housing. [Figure 31] Figure 30 is a schematic diagram of the AA cross-sectional structure. [Figure 32] This is a schematic diagram of the assembly structure including the open button and the first host housing. [Figure 33] This is a schematic diagram of a partially enlarged structure at position B in Figure 32. [Figure 34] This is a schematic diagram of the assembly structure including the second host enclosure, the third host enclosure, and the open button. [Figure 35] Figure 6 is a schematic diagram of the assembly structure of the fourth host housing of the wearable device. [Figure 36] Figure 6 is a schematic diagram of the assembly structure of the fourth host housing of the wearable device. [Figure 37]Figure 36 is a schematic exploded view of the structure of the fourth host enclosure. [Figure 38] Figure 6 is a schematic diagram of the assembly structure of the rotating shaft assembly of the wearable device. [Figure 39] Figure 38 is a schematic diagram of the AA cross-sectional structure. [Figure 40] Figure 38 is a schematic exploded view of the structure of the rotating shaft assembly. [Figure 41] This is a schematic diagram of the structure of the shaft sleeve in a rotating shaft assembly. [Figure 42] Figure 41 is a schematic diagram of the BB cross-sectional structure of the shaft sleeve. [Figure 43] This is a schematic diagram of the structure of the shaft sleeve in a rotating shaft assembly. [Figure 44] This is a schematic diagram of the structure of the shaft sleeve in a rotating shaft assembly. [Figure 45] This is a schematic diagram of the structure of the bump matching member in a rotary shaft assembly. [Figure 46] This is a schematic diagram of the structure of the driven member in a rotating shaft assembly. [Figure 47] Figure 46 is a schematic diagram of the AA cross-sectional structure of the driven member. [Figure 48] This is a schematic diagram of the structure of the driven member in a rotating shaft assembly. [Figure 49] This is a schematic diagram of the gasket structure in a rotating shaft assembly. [Figure 50] This is a schematic diagram of the gasket structure in a rotating shaft assembly. [Figure 51] This is a schematic diagram of the structure of the first shaft in a rotating shaft assembly. [Figure 52] This is a schematic diagram of the structure of the first shaft in a rotating shaft assembly. [Figure 53] This is a schematic diagram of the structure of the first shaft in a rotating shaft assembly. [Figure 54]This is a schematic diagram of an assembly structure including a first shaft, a driven member, and an elastic member within a rotating shaft assembly. [Figure 55] This is a schematic diagram of the structure of the limiting member in a rotating shaft assembly. [Figure 56] This is a schematic diagram of the structure of the second shaft in a rotating shaft assembly. [Figure 57] This is a schematic diagram of the structure of the second shaft in a rotating shaft assembly. [Figure 58] This is a schematic diagram of the structure of the second shaft in a rotating shaft assembly. [Figure 59] This is a schematic diagram of the structure of a flexible circuit board in a rotating shaft assembly. [Figure 60] This is a schematic diagram of the structure of a flexible circuit board in a rotating shaft assembly. [Figure 61] This is a schematic diagram of the structure of a flexible circuit board in a rotating shaft assembly. [Figure 62] This is a schematic diagram of the assembly structure including the second shaft and flexible circuit board in a rotating shaft assembly. [Figure 63] This is a schematic diagram of the assembly structure including the second shaft and flexible circuit board in a rotating shaft assembly. [Figure 64] This is a schematic diagram of the assembly structure of a rotating shaft assembly. [Figure 65] This is a schematic diagram of the structure of the clamping member in a rotating shaft assembly. [Figure 66] This is a schematic diagram of the assembly structure of a rotating shaft assembly. [Figure 67] This is a schematic diagram of the cross-sectional structure of a rotating shaft assembly. [Figure 68] This is a schematic diagram of the assembly structure, including the rotating shaft assembly and the third host housing. [Figure 69] This is a schematic diagram of an assembly structure including a rotating shaft assembly, a third host housing, and a second host housing. [Figure 70] This is a schematic diagram of an assembly structure including a rotating shaft assembly, a third host housing, a second host housing, and a first host housing. [Figure 71] This is a schematic diagram of a partially enlarged structure at position A in Figure 70. [Figure 72] This is a schematic diagram of the host assembly structure in a wearable device. [Figure 73] This is a schematic partial cross-sectional view of the host assembly structure in a wearable device. [Figure 74] This is a schematic diagram of the cross-sectional structure of a rotating shaft assembly. [Figure 75] This is a schematic diagram of a partially enlarged structure at position B in Figure 74. [Figure 76] Figure 75 is a schematic diagram of the AA cross-sectional structure of the structure shown. [Figure 77] This is a schematic diagram of a matching structure in a rotary shaft assembly, including a first shaft, a driven member, and an elastic member. [Figure 78] This is a schematic diagram of the structure showing the alignment between the shaft sleeve and the bump matching member in a rotating shaft assembly. [Figure 79] This is a schematic diagram of a matching structure in a rotary shaft assembly, including a first shaft, a driven member, and an elastic member. [Figure 80] This is a schematic diagram of the structure showing the alignment between the shaft sleeve and the bump matching member in a rotating shaft assembly. [Figure 81] This is a schematic diagram of a matching structure in a rotary shaft assembly, including a first shaft, a driven member, and an elastic member. [Figure 82] This is a schematic diagram of the structure showing the alignment between the shaft sleeve and the bump matching member in a rotating shaft assembly. [Figure 83] This is a schematic diagram of a structure in which the first part of the host is open to the limit relative to the second part. [Figure 84] This is a schematic diagram of a partially enlarged structure at position A in Figure 83. [Figure 85]Figure 6 is a schematic diagram of the assembly structure of the first earphone of the wearable device. [Figure 86] Figure 85 is a schematic exploded view of the structure of the first earphone. [Figure 87] This is a schematic diagram of the assembly structure of the front housing assembly of the earphone in the first earphone. [Figure 88] This is a schematic diagram of the assembly structure of the front housing assembly of the earphone in the first earphone. [Figure 89] This is a schematic exploded view of the structure of the front housing assembly of the first earphone. [Figure 90] Figure 88 is a schematic diagram of the AA cross-sectional structure of the front housing assembly of the earphone. [Figure 91] This is a schematic diagram of the structure in which a clamp clamps an intermediate assembly. [Figure 92] This is a schematic exploded view of the structure of an assembly jig according to one embodiment of this application. [Figure 93] This is a schematic diagram of the base structure of the assembly jig. [Figure 94] This is a schematic diagram of the base structure of the assembly jig. [Figure 95] This is a schematic diagram of the structure of the upper cover of the assembly jig. [Figure 96] This is a schematic diagram of the structure of the upper cover of the assembly jig. [Figure 97] This is a schematic diagram of the structure in which the clamp and intermediate assembly are located within the base. [Figure 98] This is a schematic diagram of the structure in which the top cover is integrated with the base. [Figure 99] This is a schematic diagram of the structure in which the top cover is integrated with the base. [Figure 100] This is a schematic diagram of a partially enlarged structure at position A in Figure 99. [Figure 101] This is a schematic diagram of a structure in which magnets for earphones are attached to an assembly jig. [Figure 102] This is a schematic diagram of the structure of the first electrode of the first earphone. [Figure 103]This is a schematic diagram of the structure of the earplug support assembly for the first earphone. [Figure 104] This is a schematic diagram of the structure of the earplug support assembly for the first earphone. [Figure 105] This is a schematic exploded view of the structure of the earplug support assembly. [Figure 106] This is a schematic diagram of the structure of the earplug support in the earplug support assembly. [Figure 107] This is a schematic diagram of the structure of the earplug for the first earphone. [Figure 108] This is a schematic diagram of the structure of the earplug for the first earphone. [Figure 109] Figure 108 is a schematic diagram of the AA cross-sectional structure of the earplug. [Figure 110] This is a schematic diagram of the structure of the multiple sound-collecting through-holes in the inner cover of an earplug. [Figure 111] This is a schematic diagram of the structure of the second electrode of the first earphone. [Figure 112] This is a schematic exploded view of the structure of the rear housing assembly of the first earphone. [Figure 113] This is a schematic diagram of the assembly structure of the rear housing assembly of the earphone. [Figure 114] This is a schematic diagram of the structure of the rear housing assembly of the earphone. [Figure 115] Figure 112 is a schematic diagram of the AA cross-sectional structure of the rear housing of the earphone. [Figure 116] This is a schematic diagram of the antenna structure in the rear housing assembly of the earphone. [Figure 117] This is another schematic diagram of the antenna structure in the rear housing assembly of the earphone. [Figure 118] This is another schematic diagram of the antenna structure in the rear housing assembly of the earphone. [Figure 119] This is a schematic diagram of the structure of the rear housing support in the earphone rear housing assembly. [Figure 120] Figure 113 is a schematic diagram of the BB cross-sectional structure of the earphone rear housing assembly. [Figure 121]This is a schematic diagram of the cross-sectional structure of the first earphone. [Figure 122] This is a schematic diagram of a partially enlarged structure at position A in Figure 121. [Figure 123] This is a schematic diagram of the structure of another first earphone. [Figure 124] This is a schematic diagram of the structure of another first earphone. [Figure 125] This is a schematic diagram of the structure of the electronic assembly in the first earphone. [Figure 126] This is a schematic diagram of the structure of the electronic assembly in the first earphone. [Figure 127] This is a schematic diagram of the cross-sectional structure of the first earphone. [Figure 128] This is a schematic diagram of a partially enlarged structure at position A in Figure 127. [Figure 129] This is a schematic diagram of a partially enlarged structure at position B in Figure 127. [Figure 130] This is a schematic diagram of the alignment relationship between the first host-mounting magnet inside the host and the earphone magnet inside the first earphone. [Figure 131] This is a schematic diagram of the magnet design for the first host mounting magnet and the earphone magnet. [Figure 132] This is a schematic diagram of another magnet design for the first host mounting magnet and the earphone magnet. [Figure 133] This is a schematic diagram of another magnet design for the first host mounting magnet and the earphone magnet. [Figure 134] This is a schematic diagram of another magnet design for the first host mounting magnet and the earphone magnet. [Figure 135] This is a schematic diagram of a design in which the first host-mounting magnet magnetically attracts the first and second electrodes inside the earphone. [Figure 136] This is a schematic diagram of a structure in which the first earphone is attached to the first part after the host is opened. [Figure 137] This is a schematic diagram of the process by which the first earphone is automatically positioned in a predetermined location when the first earphone is placed in a first part from outside the host. [Figure 138] This is a schematic diagram of the process by which the first earphone is automatically positioned in a predetermined location when the first earphone is placed in a first part from outside the host. [Figure 139] This is a schematic diagram of the process by which the first earphone is automatically positioned in a predetermined location when the first earphone is placed in a first part from outside the host. [Figure 140] This is a schematic diagram for detecting the open / closed state of a host. [Figure 141] This is a schematic diagram showing how the host detects whether the earphones are inside or outside the box. [Figure 142] This is a schematic diagram illustrating how the earphones detect whether they are inside or outside their box. [Figure 143] This is a schematic diagram illustrating how a host system detects foreign objects. [Modes for carrying out the invention]

[0034] The following embodiments of this application provide a wearable device. The wearable device is a completely new product form in which a host and earphones are integrated. The product form of the host includes, but is not limited to, electronic devices such as smartwatches, electronic blood pressure monitors, smart bands, smart helmets, smart clothing, smart glasses, mobile Wi-Fi, and smart backpacks. The earphones are wireless earphones, and include, but are not limited to, Bluetooth earphones (e.g., TWS (True Wireless Stereo, TWS) earphones), infrared earphones, and the like. Below, an example is described in which the host has the product form of a smartwatch and the earphones are Bluetooth earphones.

[0035] As shown in Figures 1, 2, 3, 4, and 5, the wearable device 1 of this embodiment may include a host 2 and an earphone 3, the earphone 3 of which may be housed within the host 2. Below, we will first describe the relevant design of the host 2, then the relevant design of the earphone 3, and finally the overall features and functions of the wearable device 1.

[0036] Product form and operational design of Host 2

[0037] As shown in Figures 1 to 4, the host 2 may include a first part 21, a rotating shaft assembly 22, a second part 23, a function button 24, and an open button 25. The first part 21 may be called a cover, and the second part 23 may be called the body.

[0038] Host 2 may further include a wrist strap, which may be connected to both sides of the second portion 23.

[0039] As shown in Figures 1 to 3, a rotating shaft assembly 22 is connected to the first part 21 and the second part 23, and the first part 21 can rotate relative to the second part 23 via the rotating shaft assembly 22, thereby closing or opening the host 2. When the host 2 is closed, the first part 21 and the second part 23 enclose a housing space in which the earphone 3 is housed.

[0040] In Figure 1, host 2 is in a closed state. In this case, the first part 21 and the second part 23 are closed. In all of Figures 2 to 5, host 2 is in an open state. In this case, the first part 21 is open at a specific angle relative to the second part 23. For example, the opening angle α of the first part 21 in Figure 2 may be approximately 15 degrees, the opening angle β of the first part 21 in Figure 3 may be approximately 75 degrees, and in Figure 5, the first part 21 is rotated to its limit position, and the opening angle c of the first part 21 may be approximately 90 degrees. It should be understood that the specific value of the opening angle c that occurs when the first part 21 is in its limit position may be designed based on product requirements and is not limited to the above description.

[0041] In addition, in this embodiment, as shown in Figures 2 to 4, the earphone 3 may be removed from the second part 23 and attached to the first part 21 when the host 2 is in the open state. This design is convenient for the user to take out and put in the earphone 3 (as will be further described below). In another embodiment, the earphone 3 may be housed in the second part 23 after the host 2 has been opened.

[0042] In this embodiment, a special structural design of the rotating shaft assembly 22 allows the rotational stroke of the first portion 21 to be segmented, and in each stroke segment, the first portion 21 has a corresponding rotational characteristic. In a particular stroke segment, the first portion 21 can provide tactile feedback (the specific principle will be described later).

[0043] For example, in the process of opening a closed host 2, the rotational stroke of the first part 21 can be divided into three segments. The stroke from the state shown in Figure 1 to the state shown in Figure 2 may represent the first stroke segment of the first part 21. In the first stroke segment, the opening angle of the first part 21 gradually increases to opening angle α, and the first part 21 rotates automatically without external force due to the torque drive of the rotary shaft assembly 22. The stroke from the state shown in Figure 2 to the state shown in Figure 3 may represent the second stroke segment of the first part 21. In the second stroke segment, the opening angle of the first part 21 gradually increases from opening angle a to opening angle b, and the rotary shaft assembly 22 no longer provides torque to the first part 21, and the first part 21 needs to rotate under external force drive. The stroke from the state shown in Figure 3 to the state shown in Figure 5 may represent the third stroke segment of the first part 21. In the third stroke segment, the opening angle of the first part 21 gradually increases from opening angle b to opening angle c, and the first part 21 rotates automatically without external force due to the torque drive of the rotating shaft assembly 22. When the opening angle of the first part 21 is opening angle c, the torque of the rotating shaft assembly 22 can continue to exist. It is easily understood that the host 2 has a limiting structure, and the first part 21 can maintain a balanced state under the joint action of the limiting structure and the rotating shaft assembly 22.

[0044] Conventional flip electronic devices (e.g., laptops or flip phones) require continuous user force to open, resulting in a monotonous tactile experience. However, in this embodiment, the rotational stroke of the first part 21 is segmented using the structural design of the rotating shaft assembly 22, so that the first part 21 only needs to be driven by user-applied force in the second stroke segment, and can rotate automatically without user-applied force in the other stroke segments. This provides a new tactile experience.

[0045] In addition, in the third stroke segment, the first part 21 is driven by the rotary shaft assembly 22 to move away from the second part 23. Even when the opening angle of the first part 21 reaches opening angle c, the driving force of the rotary shaft assembly 22 still exists. Therefore, it is difficult for the user to pull the first part 21 toward the second part 23 by removing the earphone 3 from the first part 21. This design makes it convenient for the user to remove the earphone 3 and can improve the user experience.

[0046] In another embodiment, the rotational stroke of the first portion 21 does not need to be segmented, and the structure of the rotating shaft can be designed so that the first portion 21 rotates either by continuous force applied by the user or always automatically.

[0047] As shown in Figures 1 to 3, an open button 25 may be attached to the second part 23, and the open button 25 and the rotary shaft assembly 22 may be located radially at both ends of the second part 23, respectively. A portion of the open button 25 may be exposed to the outside of the second part 23 for the user to press. The locking structure of the open button 25 (described below) may form a removable connection with the locking structure of the first part 21 (described below). The open button 25 works in cooperation with the locking structure of the first part 21 to open and lock the host 2.

[0048] For example, as shown in Figure 1, when the host 2 is in the closed state, the locking structure of the open button 25 forms a removable connection with the locking structure of the first part 21.

[0049] Referring to Figures 1 and 2, when the user needs to open host 2, the user can press the open button 25, which causes the open button 25 to generate mechanical motion, disengaging the locking structure of the open button 25 from the locking structure of the first part 21. In this case, the first part 21 can open automatically under the drive of the rotary shaft assembly 22 and perform the first stroke segment. Conversely, when the user wants to close host 2, the user can push down the first part 21, causing it to rotate toward the second part 23. When the locking structure of the second part 23 comes into contact with the locking structure of the open button 25, the open button 25 generates mechanical motion, and the locking structure of the open button 25 regains cooperation with the locking structure of the first part 21.

[0050] The specific principle of opening and locking the host 2 using the opening button 25 and the locking structure of the first part 21 is described in detail below.

[0051] In another embodiment, the open button may be attached to the first part instead, and the second part has a locking structure. The open button works in cooperation with the locking structure of the second part to open and lock the host. The first part may be a cover, and the second part may be the body. The following description continues with an example design in which the open button 25 is attached to the second part 23.

[0052] The above briefly describes the product form and operational design of wearable device 1. Below, the specific structure of wearable device 1 will be described in detail by first describing part 21, part 23, the open button 25, and the function button 24, followed by describing the rotating shaft assembly 22.

[0053] Structure of Host 2

[0054] As shown in Figures 5 and 6, the first part 21 of the host 2 of the wearable device 1 may include a display 211, a first host circuit board assembly 212, and a first host housing 213. Both the display 211 and the first host circuit board assembly 212 are mounted on the first host housing 213, with the first host circuit board assembly 212 positioned between the display 211 and the first host housing 213.

[0055] Structure of the first host enclosure 213

[0056] As shown in Figures 7 and 8, the appearance of the first host housing 213 may be substantially disc-shaped. The first host housing 213 may be assembled from multiple components. For example, the first host housing 213 may include a first frame body 213a, a first bracket 213b, a magnet assembly 213r, a locking portion 213d (i.e., the locking structure of the first portion 21 described above), a seal bracket 213t, and a seal ring 213s.

[0057] As shown in Figures 7 to 9, the first frame body 213a may be a frame structure having a substantially circular outer shell. Through holes 213z are provided at the edges of the first frame body 213a, and the through holes 213z may be waist-shaped holes (or runway-shaped holes). The first frame body 213a may be made of a conductive material, such as metal. The first frame body 213a may also be used as an antenna (described below).

[0058] As shown in Figures 7 to 9, the first bracket 213b may have a substantially disc-shaped structure. A first housing groove 213y and a second housing groove 213x are formed in a local area of ​​the first bracket 213b, and the first housing groove 213y and the second housing groove 213x are spaced apart. As shown in Figure 9, when viewed from one side of the first bracket 213b, the local area where the first housing groove 213y and the second housing groove 213x are formed is concave. As shown in Figures 7 and 8, when viewed from the other side of the first bracket 213b, the local area where the first housing groove 213y and the second housing groove 213x are formed is convex. As shown in Figures 4 and 9, the first housing groove 213y may be configured to accommodate a first earphone 31, and the second housing groove 213x may be configured to accommodate a second earphone 32.

[0059] As shown in Figure 9, a groove surrounding the first bracket 213b may be provided on its periphery, and the opening of this groove and the opening of the first housing groove 213y are located on the same side of the first bracket 213b. This groove surrounds the first housing groove 213y and the second housing groove 213x. As will be described later, this groove is configured to mount the seal bracket 213t and the seal ring 213s.

[0060] As shown in Figures 7 to 9, the first bracket 213b is fixedly connected to the first frame body 213a, the circumferential region of the first frame body 213a surrounds the first bracket 213b, and the through hole 213z of the first frame body 213a is also located outside the first bracket 213b.

[0061] As shown in Figure 9, the locking portion 213d may be fixed to the edge of the first bracket 213b and positioned opposite the through hole 213z of the first frame body 213a. Referring to Figures 9 and 10, a frame structure 213w may be provided at the end of the locking portion 213d away from the first bracket 213b, and this frame structure 213w may be located on the same side of the first bracket 213b as the opening of the first housing groove 213y. The frame structure 213w may surround the through hole 213v. A slope 213u may be provided on the side of the frame structure 213w away from the first bracket 213b. The frame structure 213w of the locking portion 213d is configured to form a removable buckle connection (described below) with the locking structure in the open button 25. The slope 213u acts as a guide, allowing the frame structure 213w to cooperate smoothly with the locking structure of the open button 25.

[0062] Magnet assembly 213r

[0063] As shown in Figures 8 and 11, the magnet assembly 213r may include a fastening bracket 213r1 and a first host mounting magnet 213r2.

[0064] For example, the first host mounting magnet 213r2 may be formed by joining two single magnets, each having a single magnetic field direction. The first host mounting magnet 213r2 formed by two single magnets may have two magnetic field directions, and the first host mounting magnet 213r2 may form a Halbach array.

[0065] Depending on the product requirements, in another embodiment, the first host mounting magnet may be a Halbach array formed by joining another number of single magnets. For example, the first host mounting magnet may be a Halbach array formed by joining three single magnets, and the first host mounting magnet may have three magnetic field directions. Alternatively, the first host mounting magnet may be a Halbach array formed by joining four single magnets, and the first host mounting magnet may have four magnetic field directions.

[0066] Alternatively, in another embodiment, the first host mounting magnet may be a single magnet having a single magnetic field direction. Alternatively, the first host mounting magnet may be a single magnet, but the first host mounting magnet may form a Halbach array having at least two magnetic field directions (which can be obtained by magnetizing different physical regions of the single magnet in different directions).

[0067] As shown in Figures 11 and 7, the shape of the first host mounting magnet 213r2 in this embodiment can be adapted to the shape of the outer surface of the groove wall of the first housing groove 213y (or second housing groove 213x) in the first bracket 213b. The first host mounting magnet 213r2 can be fixed to the outer surface of the groove wall of the first housing groove 213y and the outer surface of the groove wall of the second housing groove 213x.

[0068] As shown in Figure 11, for example, there may be four first host mounting magnets 213r2, and the structure of the four first host mounting magnets 213r2 may be, for example, consistent. Referring to Figures 11 and 7, the four first host mounting magnets 213r2 may be grouped in pairs. The first group is attached to the outer surface of the groove wall of the first housing groove 213y, and the two first host mounting magnets 213r2 of the first group may be attached symmetrically on both sides of the groove wall of the first housing groove 213y (for example, left and right in the perspective view of Figure 7). The second group is attached to the outer surface of the groove wall of the second housing groove 213x, and the two first host mounting magnets 213r2 of the second group are attached symmetrically on both sides of the groove wall of the second housing groove 213x (for example, left and right in the perspective view of Figure 7).

[0069] In another embodiment, the number of first host mounting magnets 213r2 may be designed based on product requirements and is not limited to the above description.

[0070] As shown in Figure 11, the number of fastening brackets 213r1 may correspond to the number of first host mounting magnets 213r2. For example, there may be four fastening brackets 213r1. Referring to Figures 11 and 7, the fastening brackets 213r1 may be attached to the first bracket 213b, with one fastening bracket 213r1 corresponding to one first host mounting magnet 213r2, thereby fixing each first host mounting magnet 213r2 between one fastening bracket 213r1 and the first bracket 213b.

[0071] In this embodiment, the fastening bracket 213r1 ensures secure fastening of the first host mounting magnet 213r2 attached to the first host. In another embodiment, the fastening bracket 213r1 may be omitted depending on the product requirements.

[0072] Seal bracket 213t and seal ring 213s

[0073] As shown in Figures 8 and 12, the seal bracket 213t may enclose a circle, and the shape of the seal bracket 213t matches the shape of the periphery of the first bracket 213b. The seal bracket 213t may include a bracket main portion 213p and a plurality of projections 213q projecting from the side of the bracket main portion 213p. All projections 213q may be spaced apart from each other. A previous projection 213q may be close to the outside of the bracket main portion 213p, and a current projection 213q adjacent to the previous projection 213q may be close to the inside of the bracket main portion 213p, and all projections 213q may be arranged according to this rule. In another embodiment, all projections 213q may not be arranged in the alternative "one inside and one outside" manner. For example, all projections 213q may be located outside or inside the bracket main portion 213p.

[0074] As shown in Figure 8, the seal ring 213s can enclose a circle, and the shape of the seal ring 213s matches the shape of the seal bracket 213t. The seal ring 213s is fixedly connected to the seal bracket 213t. For example, the seal ring 213s and the seal bracket 213t can be integrally formed using, for example, an injection molding technique. The seal bracket 213t is made of a rigid material, has high structural strength, and is resistant to deformation. The seal ring 213s is made of a soft material, has low structural strength, and is easily deformed. The component including the seal ring 213s and the seal bracket 213t is sometimes called a sealing member.

[0075] Figure 13 shows an assembly structure including the first frame body 213a, the first bracket 213b, the seal bracket 213t, and the seal ring 213s. Figure 14 is a partially enlarged schematic view of position B in Figure 13.

[0076] As shown in Figure 14, a groove 213n may be provided on the periphery of the first bracket 213b. Referring to Figures 13 and 14, the groove 213n may surround the periphery of the first bracket 213b and the periphery of the first housing groove 213y and the second housing groove 213x. The seal bracket 213t is fixed within the groove 213n, and the projection 213q may contact the bottom surface of the groove 213n. A gap is formed between the portion of the bracket main portion 213p where the projection 213q is not located and the bottom surface of the groove 213n.

[0077] For example, a seal bracket 213t can be joined to a groove 213n using a dispensing technique. Adhesive can be filled into the groove 213n, and into the gap between the portion of the bracket main part 213p where the protrusions 213q are not located and the bottom surface of the groove 213n. Since the seal bracket 213t has multiple protrusions 213q distributed at intervals, several gaps are formed between the seal bracket 213t and the bottom surface of the groove 213n. This ensures sufficient adhesive filling and thus ensures joint strength. In addition, the presence of gaps makes it difficult for the adhesive to squeeze out. This ensures a good yield for the dispensing technique.

[0078] As shown in Figure 14, the seal ring 213s is located on the side of the seal bracket 213t away from the protrusion 213q. In the following description, the seal ring 213s is configured to seal the gap between the first bracket 213b and the second host housing 231 of the host 2.

[0079] In this embodiment, the groove 213n of the first frame body 213a is narrow, and the seal ring 213s is thin and soft (in other words, the material hardness of the seal ring 213s is low). If the seal ring 213s is to be attached to the groove 213n individually, it may be difficult to attach the seal ring 213s. However, if the soft seal ring 213s is connected to the hard seal bracket 213t (the material hardness of the seal bracket 213t is high), and then the seal bracket 213t is attached to the groove 213n, the seal ring 213s can be easily assembled using the first frame body 213a.

[0080] First host circuit board assembly 212

[0081] As shown in Figure 15, the first host circuit board assembly 212 may include a circuit board 212a and components disposed on the circuit board 212a. The circuit board 212a is, for example, the primary circuit board of the host 2. Components on the circuit board 212a may include, for example, grounding springs 212b, 212c, 212d, 212e, and power supply springs 212f. Grounding springs 212b, 212c, 212d, and 212e may all be electrically connected to ground on the circuit board 212a, and power supply spring 212f may be connected to a power supply point on the circuit board 212a. Components on the circuit board 212a may further include magnetic field sensors, such as Hall effect sensors or magnetometers.

[0082] Referring to Figures 6 and 7, the first host circuit board assembly 212 can be mounted on the side of the first bracket 213b away from the opening of the first housing groove 213y, and is partially positioned between the groove wall of the first housing groove 213y and the groove wall of the second housing groove 213x.

[0083] Display 211

[0084] As shown in Figure 6, the display 211 may have a circular shape, and the edges of the display 211 may have transitioning rounded corners. The display 211 may be connected to both the first frame body 213a and the first bracket 213b of the first host housing 213. The display 211 may face the first host circuit board assembly 212. The display 211 may be electrically connected to the first host circuit board assembly 212 to realize image display. The display 211 may further have touch control functionality.

[0085] As shown in Figures 4 and 6, the second part 23 of the host 2 of the wearable device 1 may include a second host housing 231, a host battery 234, a third host housing 232, a second host circuit board assembly 235, a wireless charging coil 236, and a fourth host housing 233.

[0086] Second host chassis 231

[0087] As shown in Figures 16, 17, and 18, the second host housing 231 may include a second bracket 231a, a second charging spring 231c, a first charging spring 231e, a foreign object detection spring 231d, a state detection magnet 231x, a state detection magnet 231w, and a second host mounting magnet 231v.

[0088] As shown in Figure 19, the second bracket 231a may have a substantially circular outer shape. A third housing groove 231f and a fourth housing groove 231g may be formed in a local area of ​​the second bracket 231a, with the third housing groove 231f and the fourth housing groove 231g spaced apart. The structures of the third housing groove 231f and the fourth housing groove 231g may be basically identical. When viewed from one side of the second bracket 231a, the local area where the third housing groove 231f and the fourth housing groove 231g are formed is concave. When viewed from the other side of the second bracket 231a, the local area where the third housing groove 231f and the fourth housing groove 231g are formed is convex.

[0089] Referring to Figures 19 and 4, the third housing groove 231f is configured to accommodate the first earphone 31, and the fourth housing groove 231g is configured to accommodate the second earphone 32. When the host 2 is closed, the third housing groove 231f and the first housing groove 213y surround the housing space used to accommodate the first earphone 31, and the fourth housing groove 231g and the second housing groove 213x surround the housing space used to accommodate the second earphone 32.

[0090] In this embodiment, the groove depth of the third housing groove 231f may be greater than the groove depth of the first housing groove 213y, and the groove depth of the fourth housing groove 231g may be greater than the groove depth of the second housing groove 213x. The groove depth can be defined as the maximum distance from the opening of the housing groove (a collective term for the first housing groove 213y, the second housing groove 213x, the third housing groove 231f, and the fourth housing groove 231g) to the bottom surface of the housing groove in the direction normal to the circuit board in the host 2.

[0091] In this embodiment, when the host 2 is opened, the earphone 3 can be attached to the first part 21. Part of the first earphone 31 is located in the first housing groove 213y, and the other part is located outside the first housing groove 213y. The maximum distance between the part of the first earphone 31 located in the first housing groove 213y and the plane where the opening of the first housing groove 213y is located may be defined as the first distance, and the maximum distance between the part of the first earphone 31 located outside the first housing groove 213y and the plane where the opening of the first housing groove 213y is located may be defined as the second distance, where the first distance is smaller than the second distance. That is, when the host 2 is opened, a small portion of the first earphone 31 is located in the first housing groove 213y, and the majority of the first earphone 31 is exposed outside the first housing groove 213y. Similarly, with respect to the second earphone 32, when the host 2 is opened, a small portion of the second earphone 32 is located in the second housing groove 213x, while the majority of the second earphone 32 is located outside the second housing groove 213x. The aforementioned design will be explained further below.

[0092] As shown in Figure 19, the groove wall of the third housing groove 231f may be provided with two through holes 231z, which may be provided, for example, in the side wall of the third housing groove 231f, away from the fourth housing groove 231g. There is a gap between the two through holes 231z. The two through holes 231z are configured to mount a second charging spring 231c and a first charging spring 231e, respectively (as described further below). The groove wall of the third housing groove 231f may be further provided with a through hole 231y, which may be substantially located in the bottom wall of the third housing groove 231f, for example. There is a gap between the through hole 231y and each of the two through holes 231z. The through hole 231y is configured to mount a foreign object detection spring 231d (as described further below).

[0093] As shown in Figure 19, through holes 231z and 231y (hereinafter collectively referred to as through holes) may also be provided in the groove wall of the fourth housing groove 231g. The through holes in the groove wall of the fourth housing groove 231g may be located on the side of the fourth housing groove 231g that is away from the third housing groove 231f. The through holes in the groove wall of the fourth housing groove 231g and the through holes in the groove wall of the third housing groove 231f may be distributed basically symmetrically on both sides of the plane of symmetry of the second bracket 231a.

[0094] As shown in Figure 19, a through hole 231b may be formed in the edge of the second bracket 231a. The through hole 231b may be located between the third housing groove 231f and the fourth housing groove 231g, and the distance between the through hole 231b and the third housing groove 231f and the distance between the through hole 231b and the fourth housing groove 231g may be essentially equal. Referring to Figures 19 and 4, the through hole 231b is configured to allow the locking portion 213d of the first portion 21 to pass through (further described below).

[0095] Rechargeable spring

[0096] As shown in Figure 18, there may be two second recharge springs 231c and two first recharge springs 231e. Referring to Figures 16 to 19, one second recharge spring 231c and one first recharge spring 231e are attached to the groove wall of a third housing groove 231f, and the other second recharge spring 231c and the other first recharge spring 231e are attached to the groove wall of a fourth housing groove 231g. In the case of the third housing groove 231f, the second recharge spring 231c is located in the through hole 231z of the third housing groove 231f, and the contact head of the second recharge spring 231c may extend into the third housing groove 231f through the through hole 231z. The first recharge spring 231e is located in another through-hole 231z of the third housing groove 231f, and the contact head of the first recharge spring 231e may extend into the third housing groove 231f through another through-hole 231z. In the case of the fourth housing groove 231g, the second recharge spring 231c is located in the through-hole 231z of the fourth housing groove 231g, and the contact head of the second recharge spring 231c may extend into the fourth housing groove 231g through another through-hole 231z. The first recharge spring 231e is located in another through-hole 231z of the fourth housing groove 231g, and the contact head of the first recharge spring 231e may extend into the fourth housing groove 231g through another through-hole 231z.

[0097] In this embodiment, the two second charging springs 231c and the two first charging springs 231e can each be electrically connected to the first host circuit board assembly 212 via a line (e.g., a flexible circuit board). The second charging springs 231c and the first charging springs 231e in the third housing groove 231f are configured to elastically contact two electrodes of the first earphone 31, respectively, and the second charging springs 231c and the first charging springs 231e in the fourth housing groove 231g are configured to elastically contact two electrodes of the second earphone 32, respectively (as further described below). In this way, the first earphone 31 can be charged using the second charging spring 231c and the first charging spring 231e in the third housing groove 231f, and the second earphone 32 can be charged via the second charging spring 231c and the first charging spring 231e in the fourth housing groove 231g.

[0098] Foreign object detection spring

[0099] As shown in Figure 18, there may be two foreign object detection springs 231d. Referring to Figures 16 to 19, one foreign object detection spring 231d may be attached to the groove wall of the third housing groove 231f, and this foreign object detection spring 231d may be located in the through hole 231y of the third housing groove 231f, and the contact head of the foreign object detection spring 231d may penetrate the through hole 231y. The other foreign object detection spring 231d may be attached to the groove wall of the fourth housing groove 231g, and this foreign object detection spring 231d may be located in the through hole 231y of the fourth housing groove 231g, and the contact head of the foreign object detection spring 231d may penetrate the through hole 231y.

[0100] In this embodiment, the foreign object detection spring 231d can be electrically connected to the first host circuit board assembly 212 via a line (e.g., a flexible circuit board). The foreign object detection spring 231d is configured to detect foreign objects (detect whether or not foreign objects have entered the third and fourth accommodating grooves 231f and 231g). The specific principle will be described below.

[0101] Magnet for state detection

[0102] As shown in Figure 18, for example, the state detection magnet 231x may be a single magnet. The state detection magnet 231x may have a single magnetic field direction or at least two magnetic field directions (i.e., a Halbach array is formed). The state detection magnet 231w may be a single magnet. The state detection magnet 231x may have a single magnetic field direction or at least two magnetic field directions (i.e., the magnets may be in a Halbach array).

[0103] In another embodiment, the state-sensing magnet may be a Halbach array formed by joining at least two single magnets.

[0104] As shown in Figures 18 and 17, the state detection magnet 231x may be fixed to the side of the second bracket 231a away from the opening of the third housing groove 231f, and the state detection magnet 231x may be adjacent to the groove wall of the third housing groove 231f, and may also be close to the through hole 231b. The state detection magnets 231w and 231x may be located on the same side of the second bracket 231a, and the state detection magnet 231w may be adjacent to the groove wall of the fourth housing groove 231g.

[0105] Second host mounting magnet 231v

[0106] As shown in Figure 18, for example, the second host mounting magnet 231v may be a single magnet. The second host mounting magnet 231v may have a single magnetic field direction or may have at least two magnetic field directions (i.e., a Halbach array is formed).

[0107] Depending on the product requirements, in another embodiment, the second host mounting magnet 231v may alternatively be a Halbach array formed by joining at least two single magnets.

[0108] As shown in Figures 18 and 17, in this embodiment, for example, there may be two second host mounting magnets 231v, and the structure of the two second host mounting magnets 231v may be, for example, consistent. The two second host mounting magnets 231v can be fixed to the side of the second bracket 231a away from the opening of the third housing groove 231f. One second host mounting magnet 231v may be located on the side of the groove wall of the third housing groove 231f facing the fourth housing groove 231g, and the other second host mounting magnet 231v may be located on the side of the groove wall of the fourth housing groove 231g facing the third housing groove 231f.

[0109] In another embodiment, the number and position of the second host mounting magnets 231v may be designed based on product requirements. For example, one second host mounting magnet 231v may be mounted on each side of the groove wall of the third housing groove 231f, and one second host mounting magnet 231v may be mounted on each side of the groove wall of the fourth housing groove 231g.

[0110] Host battery 234

[0111] As shown in Figures 6 and 20, the host battery 234 may be fixed to the second bracket 231a, located on the side of the second bracket 231a away from the opening of the third housing groove 231f. The host battery 234 may be located between the groove wall of the third housing groove 231f and the groove wall of the fourth housing groove 231g. The host battery 234 may be electrically connected to the second host circuit board assembly 235 via a line (e.g., a flexible circuit board), and the second host circuit board assembly 235 may be electrically connected to the first host circuit board assembly 212 via a line (e.g., a flexible circuit board). Thus, the host battery 234 can be electrically connected to the first host circuit board assembly 212.

[0112] Third host chassis 232

[0113] As shown in Figure 21, the third host housing 232 may have a substantially ring-shaped structure. The third host housing 232 may include a circumferential side wall 232a, an inner bearing base 232b, and an inner bearing base 232g. The circumferential side wall 232a may enclose the ring shape. Both the inner bearing bases 232b and 232g are connected to the inside of the circumferential side wall 232a, and the inner bearing bases 232b and 232g may be spaced apart. For example, the inner bearing bases 232b and 232g may be substantially located at both ends of the circumferential side wall 232a in the radial direction.

[0114] As shown in Figure 22, the third host housing 232 may have a rotating shaft mounting space 232f, which may be a groove formed in the inner bearing base 232g and passing through the circumferential side wall 232a. The rotating shaft mounting space 232f is used to mount the rotating shaft assembly 22. As shown in Figure 24, the inner surface of the rotating shaft mounting space 232f may have a limiting groove 232h, which may face an opening in the circumferential side wall 232a formed by the rotating shaft mounting space 232f.

[0115] As shown in Figure 22, the third host housing 232 may have an open button mounting space. The open button mounting space may form a second opening 232c on the inner bearing base 232b, and the open button mounting space may further pass through the circumferential side wall 232a and form a first opening 232d on the circumferential side wall 232a. The open button mounting space may face the rotating shaft mounting space 232f. For example, the two may be substantially located at two opposing ends of the third host housing 232 with the same diameter.

[0116] As shown in Figures 22 and 23, a groove 232i may be provided on the inner surface of the open button mounting space opposite the second opening 232c. The groove 232i may be a long, strip-shaped groove. Guide slots 232j and grooves 232k may be provided on the inner surface of the open button mounting space opposite the first opening 232d. The guide slots 232j may be round holes, and there may be two guide slots 232j. The grooves 232k may be runway-shaped, and the grooves 232k may be located between two guide slots 232j.

[0117] As shown in Figures 21 and 22, the third host housing 232 may further have a through-hole 232e for mounting a function button, which may be provided in the circumferential side wall 232a and located between the rotating shaft mounting space 232f and the first opening 232d. The through-hole 232e for mounting a function button is configured to mount a function button 24.

[0118] Open button 25

[0119] As shown in Figures 25 and 26, the open button 25 may include a cap 251, an elastic member 252, a button support 253, and a touch-sensitive spring 254.

[0120] As shown in Figure 27, the cap 251 may have an integrated frame structure. The cap 251 may include a pressing portion 251a, a bump 251b, a guide portion 251c, a bearing portion 251d, and a buckle 251e.

[0121] As shown in Figure 27, the pressing portion 251a may be in the shape of a substantially elongated strip, and the cross-sectional shape of the pressing portion 251a may be substantially trapezoidal (the cross-section may be perpendicular to the length direction of the pressing portion 251a). The pressing portion 251a has a surface 251h, which is the surface on which the upper base of the trapezoidal cross-section of the pressing portion 251a is located.

[0122] As shown in Figure 27, the bump 251b may be located on another surface of the pressing portion 251a opposite to the surface 251h of the pressing portion 251a. The surface of the bump 251b may be an arcuate surface, a flat surface, or formed by connecting an arcuate surface and a flat surface.

[0123] As shown in Figure 27, the guide portion 251c may be a cylinder, for example. The guide portion 251c may protrude from another surface of the pressing portion 251a, and the guide portion 251c and the bump 251b may be located on the same side of the pressing portion 251a. There may be two guide portions 251c, which may be located at two opposing ends of the pressing portion 251a, respectively. The guide portions 251c are configured to guide the cap 251 as it moves.

[0124] As shown in Figure 27, the bearing portion 251d is connected to the side of the pressing portion 251a furthest from the surface 251h, and the bearing portion 251d is located between the two guide portions 251c. The bearing portion 251d may be substantially C-shaped, and both free ends of the C-shaped structure of the bearing portion 251d are connected to the pressing portion 251a, so that the bearing portion 251d and the pressing portion 251a together form an open space 251g. The bearing portion 251d is configured to support the button support 253.

[0125] As shown in Figure 27, the buckle 251e is connected to the bearing portion 251d and is located in the open space 251g. The buckle 251e may face the bump 251b. The buckle 251e may have an assembly guide bevel 251f. The buckle 251e is the locking structure in the opening button 25 described above.

[0126] As shown in Figures 25 and 26, the elastic member 252 may be a spring. Alternatively, the elastic member 252 may be another elastically expandable component. There may be two elastic members 252. Referring to Figures 26 and 27, one elastic member 252 may be sleeved in one guide portion 251c, and the other elastic member 252 may be sleeved in the other guide portion 251c.

[0127] As shown in Figure 28, the button support 253 may include a support 253a and two mounting lugs 253b connected to each side of the support 253a. The support 253a may be flat. The mounting lugs 253b may be bent plates. The mounting lugs 253b may include a first plate 253c and a second plate 253d, and the first plate 253c and the second plate 253d may be bent at approximately 90 degrees. The two first plates 253c within the two mounting lugs 253b may be bent backward relative to the second plate 253d. For example, in the perspective view of the figure, the left first plate 253c may be bent to the left relative to the left second plate 253d, and the right first plate 253c may be bent to the right relative to the right second plate 253d.

[0128] In another embodiment, the two mounting tabs may be bent in the same direction instead.

[0129] Referring to Figures 27 and 28, the button support 253 may be mounted within the open space 251g of the cap 251, and the two mounting lugs 253b of the button support 253 may be supported on the bearing portion 251d of the cap 251. The button support 253 may be configured to secure the touch-sensitive spring 254 and further configured to restrict the cap 251 when it moves to its limit position.

[0130] In this embodiment, the touch-sensitive spring 254 has elastic deformation properties, compressing when force is applied and rebounding when the pressure is released. As shown in Figure 29, the touch-sensitive spring 254 may be, for example, a dome spring, which may be formed from a polyethylene glycol terephthalate (PET) sheet, a metal dome (or called a button spring), an adhesive, or a film. The touch-sensitive spring 254 may have an elastic region 254a. The elastic region 254a may be convex when not pressed, concave after being pressed, and recover to a convex shape when the pressure is released.

[0131] Referring to Figures 29 and 25, the touch-sensitive spring 254 may be fixed to the button support 253, and the elastic region 254a may face the bump 251b.

[0132] The detailed structure of the open button 25 has been described above. The assembly of the open button 25 and the third host housing 232, and the cooperation between the open button 25 and the locking portion 213d of the first bracket 213b will be described below.

[0133] As shown in Figures 30 and 31, the open button 25 can be mounted in the open button mounting space of the third host housing 232. The state of the open button 25 shown in Figures 30 and 31 corresponds to the closed state of the host 2.

[0134] As shown in Figure 31, the pressing portion 251a may be exposed through the first opening 232d of the open button mounting space. Referring to Figures 31 and 23, a portion of the guide portion 251c may be located in the guide slot 232j, but the bottom surface of the guide slot 232j does not make contact. As shown in Figure 31, the portion of the bearing portion 251d that is spaced apart from and facing the pressing portion 251a may be located in the groove 232k. The buckle 251e may be located within the open button mounting space but outside the groove 232k. The cap 251 may move axially in the guide portion 251c. Since the first opening 232d restricts the pressing portion 251a, the cap 251 cannot move in any other direction.

[0135] Referring to Figures 31 and 23, the elastic member 252 is sleeved in the guide portion 251c, and a portion of the elastic member 252 may be located in the guide slot 232j. One end of the elastic member 252 may be in contact with the pressing portion 251a, and the other end may be in contact with the bottom surface of the guide slot 232j.

[0136] As shown in Figures 31 and 27, the cap 251 can be assembled to the button support 253 and fixed in the open button mounting space. The support 253a of the button support 253 is positioned 251g in the opening space of the cap 251 and can be inserted into the groove 232i, and the support 253a can press against the side wall of the groove 232i near the first opening 232d. The two mounting tabs 253b of the button support 253 can be supported on either side of the bearing portion 251d (or overlap). Each mounting tab 253b abuts against the portion of the bearing portion 251d that is spaced apart from the pressing portion 251a, preventing the cap 251 from continuing to move out of the open button mounting space. In other words, this is the limiting function of the button support 253 on the cap 251 at its limit position. Each mounting lug 253b can press against the upper surface of the side wall of the groove 232k (the surface of the side wall facing the first opening 232d). In this way, the side walls of groove 232i and groove 232k can restrict the button support 253 in the opposite direction, so the button support 253 is essentially unable to move in the axial direction of the guide slot 232j.

[0137] As shown in Figure 31, the touch-sensitive spring 254 can be fixed to the support 253a. The touch-sensitive spring 254 may be inserted into the groove 232i, or it may be located outside the groove 232i. The touch-sensitive spring 254 is located between the bump 251b and the buckle 251e, with the elastic region 254a of the touch-sensitive spring 254 facing the bump 251b. There is a specific gap between the touch-sensitive spring 254 and the buckle 251e.

[0138] As shown in Figure 31, when the user presses the cap 251 from the pressing part 251a, the cap 251 moves into the opening button mounting space. The guide part 251c moves into the guide slot 232j, and the elastic member 252 is gradually compressed. The bearing part 251d slides against the mounting lug 253b in the groove 232k, and the buckle 251e moves into the groove 232k. The bump 251b is in close proximity to the touch-sensitive spring 254. When the bump 251b presses against the elastic region 254a and elastically deforms the elastic region 254a, the user can experience touch-sensitive feedback.

[0139] Conversely, when the pressing portion 251a is no longer pressed, the elastic member 252 rebounds and pushes the cap 251, causing it to move out of the opening button mounting space. The guide portion 251c moves out of the guide slot 232j, and the elastic member 252 gradually stretches. The bearing portion 251d slides out of the groove 232k against the mounting lug 253b, and the buckle 251e moves out of the groove 232k. The bump 251b is separated from the touch-sensitive spring 254. After the portion of the bearing portion 251d that is spaced apart from the pressing portion 251a re-presses the mounting lug 253b, the cap 251 stops moving.

[0140] Figure 32 is a schematic cross-sectional view of the assembly of the first host housing 213, the second host housing 231, the third host housing 232, and the open button 25. The first host housing 213 is not cut out in order to clearly show the assembly structure. Figure 33 is a partially enlarged schematic view at position B in Figure 32.

[0141] Referring to Figures 33 and 16, the locking portion 213d of the first bracket 213b of the first host housing 213 can pass through the through hole 231b of the second host housing 231 and enter the opening button mounting space of the third host housing 232. In addition, the locking portion 213d can form a buckle connection with the buckle 251e, and the buckle connection is a removable connection. In this way, the cooperation between the locking portion 213d and the buckle 251e allows the first host housing 213 and the third host housing 232 to be kept closed. In other words, the first portion 21 and the second portion 23 of the host 2 can be closed.

[0142] As shown in Figure 33, when the user presses the pressing portion 251a, the buckle 251e moves and loses its buckle connection with the locking portion 213d. In this case, the first host housing 213 opens automatically by the drive of the rotary shaft assembly 22. When the user attempts to close the first portion 21 and the second portion 23, the locking portion 213d can tighten the buckle 251e after contacting it, until the locking portion 213d re-forms a buckle connection with the buckle 251e. In this case, the first portion 21 and the second portion 23 are locked together.

[0143] The open button 25 in this embodiment is designed with a reciprocating buckle 251e that can open and lock the host 2. A touch-sensitive spring 254 is designed to provide tactile feedback during the process of opening the host 2, thereby improving the user experience.

[0144] In another embodiment, depending on product requirements, the host may be opened and locked using an open button having a different structure. For example, a buckle may be located on a first support of the first host housing (corresponding to buckle 251e), and a locking portion may be located on the open button (for example, the locking portion is located on a bearing portion of the cap, and the locking portion corresponds to locking portion 213d). Alternatively, for example, a torsion spring mechanism may be used to provide a repulsive force to the movable cap, and the buckle (or locking portion) may be designed on the cap of the open button, and the host is opened and closed by the cooperation of the buckle (or locking portion) and the buckle (or locking portion) on the first bracket of the first host housing. In another embodiment, the touch-sensitive spring may be canceled.

[0145] In addition, referring to Figures 33 and 13, when the first portion 21 and the second portion 23 are closed, the first bracket 213b and the second host housing 231 close and align with each other, and the seal ring 213s of the first bracket 213b abuts against the periphery of the second host housing 231. In this way, the seal ring 213s seals the gap between the first bracket 213b and the second host housing 231, preventing external water vapor from entering the interior of the host 2 through this gap.

[0146] In another embodiment, it is readily apparent that the seal bracket and seal ring may be alternatively mounted on the periphery of the second host housing 231. The assembly structure including the seal bracket, seal ring and second host housing is the same as that described above and is not described in detail here. When the first portion 21 and the second portion 23 are closed, the seal ring of the second host housing 231 abuts against the periphery of the first bracket, sealing the gap between the second host housing 231 and the first bracket 213b.

[0147] Alternatively, in a different embodiment than the seal configuration described above, the seal bracket 213t may not be provided, and only the seal ring is provided on the first bracket 213b or the second host housing 231. In this way, the gap between the first bracket 213b and the second host housing 231 can also be sealed.

[0148] As shown in Figures 6 and 21, the function button 24 may be substantially cylindrical. The function button 24 may be mounted in a function button mounting through-hole 232e of the third host housing 232 and movably connected to the third host housing 232. The function button 24 may move within the function button mounting through-hole 232e along the axis of the function button mounting through-hole 232e, and / or the function button 24 may rotate about the axis of the function button mounting through-hole 232e. The function button 24 is configured to be pressed and / or rotated by the user so that the host 2 can perform the corresponding function, such as selection, confirmation, or switching of image display.

[0149] As shown in Figures 34 and 6, the open button 25 and the function button 24 may be mounted on the third host housing 232, and the second host housing 231 may be further mounted on the third host housing 232. The circumferential side wall 232a of the third host housing 232 surrounds the second host housing 231 and the host battery 234. Referring to Figures 34 and 16, the second opening 232c of the third host housing 232 may communicate with the through hole 231b of the second bracket 231a. The wall of the second bracket 231a may avoid the rotating shaft mounting space 232f of the third host housing 232 in order to facilitate the mounting of the rotating shaft assembly 22.

[0150] Fourth host chassis 233

[0151] As shown in Figures 35, 36, and 37, the fourth host housing 233 may be substantially disc-shaped. The fourth host housing 233 may include a third bracket 233a and a lens 233b. The third bracket 233a may be substantially disc-shaped. The third bracket 233a may have a mounting through hole 233c. The lens 233b is attached to the third bracket 233a and covers the mounting through hole 233c. The lens 233b may be configured to transmit light emitted by a photoplethysmography (PPG) sensor (described below) and light reflected by the human body.

[0152] Second host circuit board assembly 235

[0153] As shown in Figure 6, the second host circuit board assembly 235 may include a circuit board and wiring and components arranged on the circuit board. The circuit board in the second host circuit board assembly 235 may be, for example, the secondary circuit board of host 2. For example, a device such as a PPG sensor may be placed on the secondary circuit board. As shown in Figure 6, the second host circuit board assembly 235 may be mounted on the fourth host housing 233.

[0154] Wireless charging coil 236

[0155] The wireless charging coil 236 is configured to perform wireless charging. The wireless charging coil 236 may be mounted on the fourth host housing 233. The wireless charging coil 236 may be electrically connected to a circuit board in the second host circuit board assembly 235. For example, the pins of the wireless charging coil 236 may be soldered to the circuit board. As shown in Figure 6, for example, the wireless charging coil 236 may be located around the second host circuit board assembly 235.

[0156] As shown in Figures 5 and 6, the fourth host housing 233 may be assembled and fixed to the third host housing 232, and the fourth host housing 233 and the third host housing 232 together enclose the second host housing 231, the host battery 234, the second host circuit board assembly 235, and the wireless charging coil 236. Both the second host circuit board assembly 235 and the wireless charging coil 236 may be located between the host battery 234 and the fourth host housing 233.

[0157] Rotating shaft assembly 22

[0158] As shown in Figures 38, 39, and 40, in the implementation configuration 1 of this embodiment, the rotary shaft assembly 22 may include a shaft sleeve 222, a bump matching member 227, a driven member 229, a gasket 225, an elastic member 228, a first shaft 221, a limiting member 226, a second shaft 223, and a shaft contact member 224.

[0159] As shown in Figure 41, the shaft sleeve 222 may be a substantially hollow cubic structure. The shaft sleeve 222 may have a first outer surface 222a and a second outer surface 222f, which are two intersecting outer surfaces on the shaft sleeve 222. In the host 2, the side of the shaft sleeve 222 on which the first outer surface 222a is located may be fixedly connected to the first frame body 213a in the first part 21 and is covered and not visible by the first part 21 (further explanation below). When the host 2 is in a closed state, the second outer surface 222f is visible as the exterior surface of the host 2 (further explanation below).

[0160] As shown in Figures 41 and 42, the internal cavity of the shaft sleeve 222 has a spacer plate 222n, which divides the internal cavity into a first internal cavity 222i and a second internal cavity 222j. The spacer plate 222n is provided with a through hole 222s, which connects the first internal cavity 222i and the second internal cavity 222j.

[0161] As shown in Figures 42 and 43, a chute 222q and a plurality of matching grooves 222p can be provided on the side of the spacer plate 222n facing the first internal cavity 222i. The chute 222q and all the matching grooves 222p can be connected to form a ring. The ring may be located around the through hole 222s and may be concentric with the through hole 222s.

[0162] As shown in Figure 42, the matching grooves 222p may have a "recessed" shape, and the inner surface of the matching grooves 222p may be an arcuate surface. All matching grooves 222p may be arranged along an arc. All matching grooves 222p may be divided into two groups, and these two groups are separated. Multiple matching grooves 222p within each group are connected sequentially. The number of matching grooves 222p in the two groups may be the same, for example, three. In each group, two adjacent matching grooves 222p have a common sidewall. The sides of the sidewall may have rounded corners. The upper surface of the sidewall may be further recessed (i.e., a step exists) relative to the surface where the opening of the matching groove 222p is located.

[0163] As shown in Figures 42 and 43, the chute 222q may be a long, strip-shaped groove, and the extension track of the chute 222q may be an arc. There may be two chutes 222q, and the two chutes 222q may lie on the same circumference. The positions of the two chutes 222q on the circumference may be symmetrical, and the two central angles corresponding to the two chutes 222q (the angle formed by the connecting lines at both ends of the chute 222q and the center of the circumference) may both be vertical angles. The two chutes 222q and the two matching groove 222p groups are arranged alternately along the circumference. Specifically, the two chutes 222q and the two matching groove 222p groups are arranged on the circumference in the order of one chute 222q, one matching groove 222p group, the other chute 222q, and the other matching groove 222p group. One end of each chute 222q is connected to one matching groove 222p of a matching groove 222p group, and the other end of the chute 222q is connected to one matching groove 222p of another matching groove 222p group. There may be a common side wall between the chute 222q and the matching groove 222p. Alternatively, there may be no side wall between the chute 222q and the matching groove 222p, and the chute 222q and the matching groove 222p are in communication.

[0164] The design of the number, structure, and position of the chutes 222q and the design of the number, structure, and position of the matching grooves 222p described above are merely illustrative examples, and this embodiment is not limited thereto.

[0165] In this embodiment, the chute 222q and the alignment groove 222p are configured to align with the bumps on the bump alignment member 227 (described below). In another embodiment, the chute 222q and the alignment groove 222p may not be provided on the spacer plate 222n, and the bump alignment member 227 may not be provided on the rotating shaft.

[0166] As shown in Figures 41 and 42, the end of the first internal cavity 222i away from the spacer plate 222n may pass through the shaft sleeve 222 to form an opening 222h. As shown in Figures 41 and 43, the inner surface of the first internal cavity 222i may include an arcuate surface a and two planes b, the two planes b being connected to both sides of the arcuate surface a, respectively. The arcuate surface a is close to the first outer surface 222a, and the planes b are away from the first outer surface 222a. In other words, the first internal cavity 222i has a shape close to an arch, and the opening 222h has a shape close to an arch.

[0167] As shown in Figures 41 and 42, the second internal cavity 222j may include a first region 222c and a second region 222d that communicate with each other. The first region 222c is located between the spacer plate 222n and the second region 222d. The first region 222c forms an opening 222b on the first outer surface 222a. The second region 222d may be a circular hole whose axis faces the spacer plate 222n. The second region 222d forms an opening 222e on the first outer surface 222a, and the end of the second region 222d away from the spacer plate 222n may pass through the shaft sleeve 222.

[0168] As shown in Figure 41, grooves 222k and 222m may be further provided on the first outer surface 222a of the shaft sleeve 222. Grooves 222k and 222m are located on both sides of the first region 222c, and groove 222m may be located further above the second region 222d. The side of groove 222k facing groove 222m communicates with the first region 222c, and the side of groove 222m opposite groove 222k communicates with the first region 222c.

[0169] As shown in Figure 44, a limiting projection 222r is provided on the shaft sleeve 222 opposite to the first outer surface 222a. The structure of the limiting projection 222r can be designed based on requirements and is not limited to this embodiment. In this embodiment, the limiting projection 222r may be located on the side of the shaft sleeve 222 where the first internal cavity 222i is located. In another embodiment, the position of the limiting projection 222r can be flexibly determined based on requirements and is not limited to being located on the side of the spacer plate 222n closer to the first internal cavity 222i. Alternatively, the limiting projection 222r may not be provided.

[0170] As shown in Figure 44, a mounting groove 222g may be provided on the surface of the shaft sleeve 222 that forms the opening 222h, and this mounting groove 222g may communicate with the first internal cavity 222i. Similarly, another mounting groove 222g may be provided on the surface of the end of the shaft sleeve 222 opposite the opening 222h, and this other mounting groove 222g may communicate with the second region 222d. The mounting groove 222g is configured to mount the shaft contact member 224 (as described further below). In another embodiment, the position of the mounting groove 222g may be flexibly determined based on requirements and is not limited to the above description. Alternatively, the mounting groove 222g may be omitted.

[0171] As shown in Figure 45, the shape of the bump matching member 227 may be substantially cylindrical. A bump 227a may be provided on the bottom surface of the bump matching member 227, and the bump 227a may have an arcuate surface projecting from the bottom surface. There is at least one bump 227a. For example, Figure 45 shows two bumps 227a. When there are two or more bumps 227a, the bumps 227a may be evenly distributed with spacing along the circumference. The bumps 227a are configured to match the chute 222q and the matching groove 222p on the spacer plate 222n of the shaft sleeve 222 (further described below).

[0172] As shown in Figure 45, the bump matching member 227 may further have a through hole 227b through which the bump matching member 227 may pass in the direction of the centerline of the bump matching member 227. In this embodiment, the inner surface of the through hole 227b may include an arcuate surface 227c, a plane 227d, and a plane 227e. The two sides of the arcuate surface 227c are connected to the planes 227d and 227e, respectively, and the planes 227d and 227e may form an angle. The bump matching member 227 may be attached to the first shaft 221, and the through hole 227b may be aligned with the first shaft 221. The through hole 227b in this structure allows the bump matching member 227 to move along the first shaft 221, but the bump matching member 227 cannot rotate relative to the first shaft 221 (as further described below).

[0173] In another embodiment, the bump matching member 227 may not be provided on the rotating shaft.

[0174] As shown in Figures 46 and 47, the driven member 229 may be substantially block-shaped or sheet-shaped. The driven member 229 has a through hole 229g, and the axis of the through hole 229g is substantially in the thickness direction of the driven member 229. The surface on the thickness direction side of the driven member 229 is sometimes called the shaft matching surface. The shaft matching surface may form a two-step ladder. The shaft matching surface may include a first inclined surface 229a, a plane 229b, and a second inclined surface 229c that are continuously connected (the three regions are represented by shadows to emphasize the three regions). The normal to the plane 229b may be in the axial direction of the through hole 229g. The first inclined surface 229a and the plane 229b form an obtuse angle, and the plane 229b and the second inclined surface 229c form an obtuse angle. There is a step between the first inclined surface 229a and the second inclined surface 229c. The side of the first slope 229a that is away from the plane 229b may be higher than the plane 229b, and the side of the second slope 229c that is away from the plane 229b may be lower than the plane 229b.

[0175] As shown in Figure 46, the shaft alignment surface of the driven member 229 may include two first inclined surfaces 229a, two planes, and two second inclined surfaces 229c. The shaft alignment surface may form two two-step ladders that extend progressively downward in the circumferential direction of the shaft alignment surface. The two two-step ladders may be spaced apart. For example, the two-step ladders may be center-symmetric with respect to the through hole 229g.

[0176] As shown in Figure 48, the outer surface of the driven member 229 (where the normal of the outer surface points to the through hole 229g) may be substantially arched. The outer surface may include an arcuate surface 229h, an arcuate surface 229i, a plane 229d, a plane 229e, and a plane 229f. The arcuate surfaces 229h and 229i may be used as the apex of the arch, and the arcuate surfaces 229h and 229i may be substantially symmetrical with respect to the axis of the through hole 229g. The plane 229e may be used as the bottom of the arch. The plane 229f may be located between the arcuate surfaces 229h and 229e, and the side surface of the plane 229f may be connected to the arcuate surface 229h. The plane 229d may be located between the arcuate surfaces 229i and 229e, and the side surface of the plane 229d may be connected to the arcuate surface 229i.

[0177] The driven member 229 may be mounted within the first internal cavity 222i of the shaft sleeve 222, and the outer surface of the driven member 229 may have the structure described above, thereby allowing the driven member 229 to move within the first internal cavity 222i without rotation (as further described below). In another embodiment, the outer surface of the driven member 229 may have another suitable structure, provided that the design requirement that the driven member 229 moves within the first internal cavity 222i without rotation is met.

[0178] As shown in Figures 49 and 50, the gasket 225 may be substantially sheet-like. The gasket 225 may include a first portion 225a and a second portion 225b, which are connected (for example, connected as a whole), and which may form, for example, an angle d. The angle d is, for example, approximately 90°. The first portion 225a and the second portion 225b do not have to be coplanar, and may form an angle e between the second portion 225b and the plane on which the first portion 225a is located. For example, in the perspective view of Figure 50, the second portion 225b is inclined upward with respect to the first portion 225a and may form an angle e with the plane on which the first portion 225a is located (in other words, it may form an angle e with the first portion 225a).

[0179] A first portion 225a of the gasket 225 may be fixed within the first internal cavity 222i of the shaft sleeve 222, and a second portion 225b of the gasket 225 may press against the plane 229e of the driven member 229 (as will be further described below).

[0180] As shown in Figure 51, the first shaft 221 may be a single, integrated structure and may include a sequentially connected first section 221a, a second section 221b, and a third section 221c. In Figure 51, it can be seen that three dashed boxes are used to distinguish the first section 221a, the second section 221b, and the third section 221c. This is merely intended to intuitively illustrate the approximate locations of the first section 221a, the second section 221b, and the third section 221c, and is not intended to strictly define the boundaries of the first section 221a, the second section 221b, and the third section 221c.

[0181] As shown in Figures 51 and 52, the first portion 221a may include an end portion 221d and a main portion 221g, both of which may be substantially cylindrical. The main portion 221g is connected to a second portion 221b, and the end portion 221d is separated from the second portion 221b. A slot 221e may be formed between the end portion 221d and the main portion 221g, and the slot 221e may surround the axis of the end portion 221d. The bottom surface of the slot 221e is lower than the outer circumferential surface of the end portion 221d and lower than the outer circumferential surface of the main portion 221g.

[0182] As shown in Figures 51 and 53, the end of the main portion 221g near the end 221d may form a concave space 221f. The concave space 221f may have planes 221i and 221j. Plane 221i may be basically parallel to the axis of the end 221d, plane 221j may be basically perpendicular to the axis of the end 221d, and plane 221i may be basically perpendicular to plane 221j. Plane 221j may connect the outer circumferential surface of the main portion 221g to plane 221i. Both sides of plane 221i may be connected to the outer circumferential surface of the main portion 221g. The concave space 221f may be formed by cutting the outer circumferential surface of the main portion 221g.

[0183] As shown in Figure 53, there may be two concave spaces 221f, with a specific interval between them. In another embodiment, the number of concave spaces 221f is not limited to the above description and may be, for example, one or three or more.

[0184] In this embodiment, the end of the main portion 221g near the end 221d may coincide with the through hole 227b of the bump matching member 227, and the surface of the end of the main portion 221g may coincide with the inner wall of the through hole 227b, thereby preventing the bump matching member 227 from rotating, even though it may move along the main portion 221g (as will be further explained below). In another embodiment, if the bump matching member 227 is not provided, the end of the main portion 221g near the end 221d may not form a concave space 221f.

[0185] As shown in Figures 51 to 53, the second portion 221b may have an outer circumferential surface 221h, which may be a substantially cylindrical surface. In this embodiment, the second portion 221b may be attached to the first internal cavity 222i of the shaft sleeve 22, and the outer circumferential surface 221h rotates to coincide with the arcuate surface a of the first internal cavity 222i.

[0186] As shown in Figures 52 and 53, a two-step ladder may be formed on the surface of the second portion 221b facing the end 221d (in Figure 53, the surface of the two-step ladder is shown using a shadow), and this two-step ladder has a structure similar (or substantially similar) to the two-step ladder of the driven member 229 described above. Referring to Figures 52, 46 and 40, the driven member 229 may be assembled to the second portion 221b to form a cam mechanism, and the surface of the two-step ladder of the second portion 221b may move to coincide with the surface of the two-step ladder of the driven member 229, thereby enabling the driven member 229 to perform a specific motion (further described below).

[0187] The structure of the third part 221c may be designed based on requirements and is not limited to those shown in Figures 51 to 53. The third part 221c is configured to be fixed to the inner bearing base 232g of the third host housing 232 (as further described below). As shown in Figure 40, the elastic member 228 may be a component that can provide a repulsive force, such as a spring.

[0188] The structures of the shaft sleeve 222, bump matching member 227, first shaft 221, driven member 229, and elastic member 228 have been described individually above. The assembly structure including each component will now be described.

[0189] As shown in Figures 39, 45, 43, and 46, the driven member 229, the elastic member 228, and the bump matching member 227 can all be located in the first internal cavity 222i of the shaft sleeve 222. The bump matching member 227 is close to the spacer plate 222n of the shaft sleeve 222, and the bump 227a of the bump matching member 227 may face the chute 222q of the spacer plate 222n (or face the matching groove 222p). The driven member 229 is away from the spacer plate 222n, and the two-step ladder of the driven member 229 is away from the spacer plate 222n. Both the arcuate surfaces 229h and 229i of the driven member 229 can face and coincide with the arcuate surface a of the first internal cavity 222i, and both the planes 229e and 229f of the driven member 229 can face and coincide with the plane b of the first internal cavity 222i. In this way, the driven member 229 can move within the first internal cavity 222i, but cannot rotate relative to the first internal cavity 222i.

[0190] It is readily apparent that the aligned structure including the driven member 229 and the first internal cavity 222i is merely one example. In another embodiment, a different suitable aligned structure may be designed based on requirements such that the driven member 229 can only move within the first internal cavity 222i and cannot rotate relative to the first internal cavity 222i (the possibility of the driven member 229 rotating with the shaft sleeve 222 will be discussed below).

[0191] As shown in Figure 39, the elastic member 228 is positioned between the driven member 229 and the bump matching member 227. One end of the elastic member 228 can press against the driven member 229, and the other end can press against the bump matching member 227.

[0192] As shown in Figures 51, 39, 41, and 42, both the main portion 221g and the second portion 221b of the first portion 221a of the first shaft 221 may be located in the first internal cavity 222i of the shaft sleeve 222. The end portion 221d of the first portion 221a may be located in the first region 222c of the second internal cavity 222j of the shaft sleeve 222, and some or all of the slot 221e of the first portion 221a may be located in the first region 222c.

[0193] As shown in Figures 51, 46, 45, and 42, the first portion 221a may pass through the through hole 229g of the driven member 229, the elastic member 228, the through hole 227b of the bump matching member 227, and the through hole of the spacer plate 222n. The two-step ladder of the second portion 221b may face the two-step ladder of the driven member 229, and the two-step ladder of the second portion 221b may coincide with the two-step ladder of the driven member 229, thereby allowing the second portion 221b and the driven member 229 to form a cam mechanism.

[0194] As shown in Figures 53 and 45, the plane 221i of one concave space 221f of the main portion 221g may face and coincide with the plane 227d of the through hole 227b of the bump matching member 227. The plane 221i of the other concave space 221f of the main portion 221g may face and coincide with the plane 227e of the through hole 227b of the bump matching member 227. The outer circumferential surface of the main portion 221g may face and coincide with the arcuate surface 227c of the through hole 227b of the bump matching member 227. Thus, the bump matching member 227 can move along the main portion 221g within the first internal cavity 222i, but it cannot rotate around the main portion 221g.

[0195] It is readily apparent that the matching structure including the main body 221g and the bump matching member 227 is merely one example. In another embodiment, a different suitable matching structure may be designed based on the requirements such that the bump matching member 227 can only move along the main body 221g and cannot rotate about the main body 221g.

[0196] Referring to Figures 51 and 39, the third portion 221c of the first shaft 221 may be located outside the shaft sleeve 222.

[0197] Figure 54 can intuitively illustrate an assembly structure including a first shaft 221, a driven member 229, an elastic member 228, and a bump matching member 227.

[0198] As shown in Figures 39 and 50, the gasket 225 can be fixed to the first internal cavity 222i of the shaft sleeve 222. The first portion 225a of the gasket 225 may be located between the third portion 221c of the first shaft 221 and the shaft sleeve 222. The second portion 225b of the gasket 225 may be located between the driven member 229 and the shaft sleeve 222. During the overall movement process of the driven member 229, the second portion 225b can always press against the driven member 229. Because the second portion 225b is inclined with respect to the first portion 225a, the second portion 225b presses the driven member 229 against the inner surface of the first internal cavity 222i of the shaft sleeve 222, thereby allowing the driven member 229 to closely conform to the inner surface of the first internal cavity 222i. This prevents the driven member 229 from shaking due to manufacturing errors during movement. In another embodiment, the gasket 225 may be omitted depending on the actual requirements.

[0199] As shown in Figure 55, the limiting member 226 is basically plate-shaped, and the structure of the limiting member 226 can be designed based on requirements. For example, the outer shape of the limiting member 226 can conform to the shape of the first region 222c of the second internal cavity 222i of the shaft sleeve 22. An opening 226a may be formed in the limiting member 226.

[0200] Referring to FIGS. 55, 39 and 52, the limiting member 226 is located in the first region 222c of the second internal cavity 222i of the shaft sleeve 22 and can contact the spacer plate 222n of the shaft sleeve 22. The edge of the opening 226a of the limiting member 226 can be clamped in the slot 221e of the first portion 221a of the first shaft 221. Therefore, the limiting member 226 restricts the first shaft 221, prevents the first shaft 221 from coming off the shaft sleeve 22, and guarantees that the relative positions of the first shaft 221 and the shaft sleeve 22 are kept constant, so that the reliable assembly of the driven member 229, the elastic member 228, the bump alignment member 227 and the shaft sleeve 22 can be guaranteed.

[0201] As shown in FIGS. 56, 57 and 58, the second shaft 223 can be of an integral structure and can include a first portion 223a, a second portion 223b and a third portion 223c that are sequentially connected. In FIG. 56, it can be understood that three dashed boxes are used to distinguish the first portion 223a, the second portion 223b and the third portion 223c. This is only intended to intuitively explain the approximate positions of the first portion 223a, the second portion 223b and the third portion 223c, and is not intended to strictly limit the boundaries of the first portion 223a, the second portion 223b and the third portion 223c.

[0202] As shown in FIGS. 56 to 58, both the first part 223a and the second part 223b can be substantially cylindrical. The structure of the third part 223c can be designed based on requirements. FIGS. 56 to 58 are merely examples. A channel 223d can be formed in the second shaft 223, and the channel 223d can basically extend axially of the first part 223a. The channel 223d can pass through two opposite ends of the first part 223a in the radial direction, and can pass through one end of the second part 223b and one end of the third part 223c in the radial direction of the second part 223b. Thus, the first part 223a can be divided into two parts completely separated by the channel 223d, and the second part 223b and the third part 223c can each be divided into two connected parts by the channel 223d.

[0203] As shown in FIGS. 57 and 58, the end of the first part 223a away from the second part 223b has a groove 223e, and the groove 223e can specifically be provided on the inner surface of the channel 223d. There may be two grooves 223e, each part of the first part 223a has one groove 223e, and the openings of the two grooves 223e face each other.

[0204] In this embodiment, a flexible circuit board can be attached to the second shaft 223. Details are shown below.

[0205] FIGS. 59, 60 and 61 show the schematic structure after the flexible circuit board 26 is bent and wound (the flexible circuit board 26 is bent and wound after passing through the second shaft 223). Actually, the flexible circuit board 26 is in a deployed state before being attached to the second shaft 223, and in the deployed state, the flexible circuit board 26 can have a substantially long strip-like structure.

[0206] As shown in Figures 59 to 61, the flexible circuit board 26 may include electrical connection ends 261 and 263. After unfolding the flexible circuit board 26, the electrical connection ends 261 and 263 are the two ends of the flexible circuit board 26 in the extending direction. The electrical connection ends 261 and 263 are configured for electrical signal transmission and may include connectors.

[0207] For example, the electrical connection end 261 may be connected to the first host circuit board assembly 212. For example, the connector of the electrical connection end 261 may be connected to a connector on the circuit board 212a of the first host circuit board assembly 212 to electrically connect the flexible circuit board 26 and the first host circuit board assembly 212.

[0208] For example, the electrical connection end 263 may be electrically connected to a second host circuit board assembly 235, a flexible circuit board connecting the function button 24 and the motor (for example, the function button 24 and the motor may share the same flexible circuit board). The flexible circuit board connecting the function button 24 and the motor may be fixed, for example, to the side of the second bracket 231a away from the opening of the third housing groove 231f. A magnetic field sensor (for example, a Hall effect sensor or a magnetometer) may be placed on the flexible circuit board. For example, there may be two magnetic field sensors, and the two magnetic field sensors may be close to the groove wall of the third housing groove 231f and the groove wall of the fourth housing groove 231g, respectively.

[0209] As shown in Figures 59 to 61, the flexible circuit board 26 may further include a connection portion 264 and a mounting portion 262. The connection portion 264 connects the mounting portion 262 to an electrical connection end 261, and the mounting portion 262 is further connected to an electrical connection end 263.

[0210] As shown in Figures 59 to 61, the connection portion 264 has a grounding portion 264a and a limiting portion 264b. The grounding portion 264a may be, for example, close to the electrical connection end 261, and the limiting portion 264b may be, for example, far from the electrical connection end 261. The limiting portion 264b may be, for example, lug-shaped. For example, there may be two limiting portions 264b, each located at one end of the connection portion 264.

[0211] As shown in Figures 59 to 61, the mounting portion 262 is configured to coincide with the second shaft 223 and may be bent and wound. For example, in the perspective view of Figure 59, a portion of the mounting portion 262 may be folded to form a stack, and this portion may be called the stack. The other portion of the mounting portion 262 may be connected to the stack and wound to form a ring, and this portion may be called the wound portion. The wound portion may be located at one end of the stack. In Figure 59, it may be understood that the mounting portion 262 is indicated by a dashed box. This is merely intended to intuitively illustrate the approximate location of the mounting portion 262 and is not intended to strictly define the boundaries of the mounting portion 262.

[0212] In this embodiment, the number of wires within the flexible circuit board 26 must satisfy the design requirements, and the width dimension of the flexible circuit board 26 affects the number of wires within the flexible circuit board 26. Therefore, the width dimension of the flexible circuit board 26 (e.g., minimum width dimension) must satisfy the design requirements. Figures 59 and 62 show the width dimension W1 of the winding portion and the folded width dimension W2 of the laminated portion of the mounting portion 262 of the flexible circuit board 26 (the unfolded width of the unfolded laminated portion is approximately 2 × W2), and the width dimension W1 of the winding portion and the folded width dimension W2 of the laminated portion can be designed based on the requirements.

[0213] As shown in Figures 59 to 61, the flexible circuit board 26 may further include isolation brackets 266. The structure of the isolation brackets 266 may be designed based on requirements, for example, it may be substantially flat. The number of isolation brackets 266 may be determined based on requirements, and there may be a single isolation bracket 266 or at least two isolation brackets 266. The isolation brackets 266 may be clamped between the folded layers of the laminate, and each layer may be connected (e.g., glued) to the isolation brackets 266.

[0214] In this embodiment, the unfolded width of the laminate is generally small, making it difficult to maintain the folded shape after the laminate is folded (the folded layer is prone to tilting). However, since a separation bracket 266 is provided, the separation bracket 266 may enable the laminate to maintain its folded shape. In addition, the separation bracket 266 may also limit the bending radius of the laminate to avoid damage due to excessive bending of the laminate. In another embodiment, the separation bracket 266 may not be provided depending on the product requirements. As shown in Figures 59 and 61, the flexible circuit board 26 may further include a protective layer 265. For example, the protective layer 265 may be attached to the surface of the laminate and located at the end of the laminate away from the winding portion. The material of the protective layer 265 may be, for example, Mylar. In this embodiment, the location and material of the protective layer 265 may be designed on the basis of product requirements and are not limited to the above description.

[0215] In this embodiment, the laminated portion may be fixed to the third host housing 232, and the protective layer 265 can separate the laminated portion from the third host housing 232, preventing damage to the flexible circuit board 26 due to friction between the laminated portion and the third host housing 232 (as further described below). In addition, the protective layer 265 can further strengthen the structure of the laminated portion. In another embodiment, the protective layer 265 may be omitted depending on the product requirements.

[0216] Figures 62 and 63 show an assembly structure including a flexible circuit board 26 and a second shaft 223, respectively. When the second shaft 223 is assembled to the flexible circuit board 26, the stacked portion of the mounting portion 262 of the unfolded flexible circuit board 26 may be folded first. In this case, the winding portion of the mounting portion 262 may remain unfolded. Referring to Figures 62, 63 and 58, the entire mounting portion 262 is then attached from the third portion 223c of the second shaft 223 to the channel 223d of the second shaft 223, thereby positioning the winding portion of the mounting portion 262 on the first portion 223a of the second shaft 223. In this case, the winding portion may be bent to wind it around the first portion 223a, and the number of coils of the winding portion may be determined based on actual requirements. After winding is complete, there is a certain distance between the winding portion and the end of the first portion 223a that is separated from the second portion 223b (i.e., the winding portion does not cover the end of the first portion 223a). This prevents damage to the winding portion that could affect its lifespan (as further explained below). Both the electrical connection ends 261 and 263 of the flexible circuit board 26 are located outside the second shaft 223. The electrical connection ends 261 and 263 can be bent to fit into the internal space of the host 2. The protective layer 265 and connection portion 264 of the flexible circuit board 26 may be exposed to the outside of the second shaft 223.

[0217] In this embodiment, the inner ring of the winding portion of the flexible circuit board 26 is in direct contact with the first portion 223a of the second shaft 223. The joint between the winding portion and the laminated portion may be fixed to the first portion 223a, and the fixing method may be, for example, a joint. Another region of the winding portion may remain in a natural winding state without being fixed, and that region may be loosened to increase the diameter of that portion, or tightened to decrease the diameter of that portion.

[0218] In this embodiment, since the winding portion of the flexible circuit board 26 is wound around the first portion 223a of the second shaft 223, the width dimension W1 of the winding portion can be secured by utilizing the axial dimension of the first portion 223a. Since the laminated portion of the flexible circuit board 26 is housed in the channel 223d of the second shaft 223 in a folded state, the space required on the second shaft 223 to house the laminated portion with an unfolded width of 2 × W2 is reduced. This makes it possible to miniaturize the second shaft 223, and furthermore, to miniaturize the host 2.

[0219] In short, by designing a second shaft 223 in the above structure and attaching a flexible circuit board 26 to this second shaft 223 by bending and winding it, the electrical connection of the host 2 can be realized, the width dimension of the flexible circuit board 26 can be secured to meet the design requirements, and the host 2 can be miniaturized.

[0220] In this embodiment, the second shaft 223 to which the flexible circuit board 26 is attached may be attached to the second internal cavity 222j of the shaft sleeve 222.

[0221] Referring to Figures 57 and 67, the first portion 223a of the second shaft 223 is located in the first region 222c of the shaft sleeve 222. The second portion 223b of the second shaft 223 may be located in the second region 222d of the second internal cavity 222j. The outer circumferential surface of the second portion 223b may rotate to coincide with the inner surface of the second region 222d. In other words, the outer circumferential surface of the second portion 223b may or may not contact the inner surface of the second region 222d (with a small gap), and the inner surface of the second region 222d may rotate relative to the outer circumferential surface of the second portion 223b. The third portion 223c of the second shaft 223 is located outside the shaft sleeve 222.

[0222] As shown in FIGS. 59, 64, and 67, the entire winding portion of the flexible circuit board 26 is located in the first region 222c. A part of the laminated portion of the flexible circuit board 26 is located in the first region 222c and the second region 222d, and the other part of the laminated portion is located outside the shaft sleeve 222. Both the electrical connection end portion 261 and the electrical connection end portion 263 of the flexible circuit board 26 are located outside the shaft sleeve 222. The connection portion 264 of the flexible circuit board 26 can pass through the opening of the first region 222c, and both the grounding portion 264a and the restricting portion 264b of the connection portion 264 are located outside the shaft sleeve 222.

[0223] Referring to FIG. 64, in the present embodiment, the electrical connection end portion 261 of the flexible circuit board 26 can be fixed to the first host circuit board assembly 212, and the electrical connection end portion 261 can move together with the first portion 21 of host 2. Therefore, the connection portion 264 connected to the electrical connection end portion 261 also moves together with the electrical connection end portion 261. In order to enable the connection portion 264 to move based on the design requirements, ensure the control of the movement of the connection portion 264, and avoid fatigue damage to the connection portion 264, the connection portion 264 can be clamped using a clamp member so as to restrict the connection portion 264. This will be described below.

[0224] As shown in FIG. 65, the clamp member 27 is substantially sheet-shaped, and a clamp gap 27a can be provided in the clamp member 27. The clamp gap 27a can be basically linear. One end of the clamp gap 27a passes through the clamp member 27, and the other end does not pass through the clamp member 27. The clamp member 27 can be manufactured using a material excellent in insulation and moisture resistance, for example, a Mylar sheet.

[0225] As shown in Figures 65 and 66, the connecting portion 264 may penetrate the clamping gap 27a of the clamping member 27, the limiting portion 264b of the connecting portion 264 may be clamped to the edge of the clamping gap 27a, the clamping member 27 may be fixed to grooves 222k and 222m of the shaft sleeve 222, and the clamping member 27 may cover at least a portion of the first region 222c. In this way, the clamping member 27 can clamp the connecting portion 264 and limit it. When the connecting portion 264 moves, the presence of the clamping member 27 ensures that the movement stroke of the connecting portion 264 meets the design requirements and reduces the likelihood of fatigue damage. In addition, the limiting portion 264b is designed to facilitate the precise positioning of the clamping member 27 and the flexible circuit board 26 during assembly on the manufacturing line, thereby ensuring assembly yield. In another embodiment, the design of clamping the connecting portion 264 using the clamping member 27 may be canceled.

[0226] The structure and assembly of the second shaft 223, flexible circuit board 26, shaft sleeve 222, and clamp member 27 have been described above. The overall assembly structure of the rotating shaft assembly 22 and the assembly relationship between the flexible circuit board 26, the second shaft 223, and the first shaft 221 will be described below.

[0227] Figure 67 shows a cross-sectional view of the assembly structure including the rotating shaft assembly 22, the flexible circuit board 26, and the clamp member 27. The flexible circuit board 26 is not cut in order to clearly show it. As shown in Figure 67, the assembly relationships between the first shaft 221, the driven member 229, the elastic member 228, the bump matching member 227, and the shaft sleeve 222, and the assembly relationships between the second shaft 223, the flexible circuit board 26, the clamp member 27, and the shaft sleeve 222 have been described above and will not be repeated here. As described above, the end of the first portion 223a of the second shaft 223 is not covered by the winding portion of the flexible circuit board 26. This makes it easier to insert the end 221d of the first shaft 221 into the groove 223e of the first portion 223a of the second shaft 223. To avoid interference between the end portion 221d and the winding portion, a specific gap may be provided between the end portion 221d and the winding portion in the axial direction of the first shaft 221.

[0228] In addition, as shown in Figures 44, 38, and 40, one shaft contact member 224 may be fixed in a mounting groove 222g of the shaft sleeve 222 near the second portion 221b of the first shaft 221, and the shaft contact member 224 will contact the second portion 221b. Similarly, another shaft contact member 224 may be fixed in a groove of the shaft sleeve 222 near the second portion 223b of the second shaft 223, and the shaft contact member 224 will contact the second portion 223b (for perspective reasons, the groove assembled in the shaft sleeve 222 near the second portion 223b and the shaft contact member 224 within the groove are not shown). In this embodiment, the shaft contact member 224 may be a conductor, such as a metal spring.

[0229] The assembly structures of the rotating shaft assembly 22, the flexible circuit board 26, and the first and second parts 21 and 23 of the host 2 will be described one by one below.

[0230] As shown in Figure 68, both the third portion 221c of the first shaft 221 and the third portion 223c of the second shaft 223 can be fixed to the inner bearing base 232g of the third host housing 232. The shaft sleeve 222 may be located in the rotating shaft mounting space 232f of the third host housing 232, and the shaft sleeve 222 may rotate within the rotating shaft mounting space 232f. The second outer surface 222f of the shaft sleeve 222 may face the outside of the circumferential side wall 232a of the third host housing 232. The electrical connection end 261 of the flexible circuit board 26 may be located inside the circumferential side wall 232a.

[0231] Referring to Figures 67 and 68, the electrical connection end 263 of the flexible circuit board 26 may be located inside the circumferential side wall 232a and fixed to the inner bearing base 232g. For example, the electrical connection end 263 may have an adhesive and be bonded to the inner bearing base 232g. Referring to Figures 67, 24, and 68, the protective layer 265 of the flexible circuit board 26 is located inside the circumferential side wall 232a and between the circumferential side wall 232a and the laminated portion of the flexible circuit board 26, thereby preventing friction caused by direct contact between the laminated portion and the circumferential side wall 232a and avoiding damage to the flexible circuit board 26 due to friction.

[0232] As shown in Figure 69, the second bracket 231a of the second host housing 231 may be assembled and fixed to the third host housing 232, and the second host housing 231 may be located inside the circumferential side wall 232a. In the perspective view of Figure 69, the openings of the third housing groove 231f and the fourth housing groove 231g of the second bracket 231a face upward. The second bracket 231a covers both the third portion 221c of the first shaft 221 and the third portion 223c of the second shaft 223. The through hole 231b and shaft sleeve 222 of the second bracket 231a may be substantially located at two opposing ends of the same diameter on the circumferential side wall 232a, respectively. Referring to Figures 69 and 68, the through hole 231b may communicate with the second opening 232c of the third host housing 232.

[0233] Referring to Figures 70 and 69, the first host housing 213 can cover the second host housing 231 and the third host housing 232. As seen in Figure 70, the openings of the first housing groove 213y and the second housing groove 213x of the first bracket 213b of the first host housing 213 may face downward. In this embodiment, the opening of the first housing groove 213y may face the opening of the third housing groove 231f, and the opening of the first housing groove 213y may be aligned with the opening of the third housing groove 231f. The opening of the second housing groove 213x may face the opening of the fourth housing groove 231g, and the opening of the second housing groove 213x may be aligned with the opening of the fourth housing groove 231g.

[0234] Referring to Figures 70 and 69, the first frame body 213a within the first host housing 213 is fixedly connected to the side of the shaft sleeve 222 having a first outer surface 222a, and the first frame body 213a may cover a portion of the area of ​​the first outer surface 222a and a portion of the area of ​​the clamp member 27. The other area of ​​the first outer surface 222a and the other area of ​​the clamp member 27 may be exposed through the through hole 213z of the first frame body 213a. The electrical connection ends 261 and connection portions 264 of the flexible circuit board 26 may pass through the through hole 213z of the first frame body 213a. The electrical connection ends 261 may be connected to the circuit board of the first host circuit board assembly 212 so that the flexible circuit board 26 is electrically connected to the first host circuit board assembly 212. The grounding portion 264a of the connection portion 264 may pass through the through hole 213z and is connected to the first frame body 213a via a conductor, which may be, for example, a conductive foam or a conductive adhesive. In this way, the flexible circuit board 26 can be grounded and interference with the antenna radiation performance of the host 2 can be avoided (as will be further explained below). The limiting portion 264b of the connection portion 264 is located in the through hole 213z.

[0235] As shown in Figures 71 and 69, the through-hole 213z of the first frame body 213a is filled with a sealing material (shown in shadow), which fills the through-hole 213z and covers the surface of the first outer surface 222a and the clamp member 27, and the sealing material surrounds the connection portion 264 of the flexible circuit board 26. The sealing material may be, for example, a sealant. The sealing material has a sealing function and can prevent moisture from entering the electrical connection end 261 and the first host circuit board assembly 212 through the through-hole 213z of the first frame body 213a. The moisture may be from the outside, and external moisture may enter the through-hole through the assembly gap between the shaft sleeve 222 and the circumferential side wall 232a. Alternatively, the moisture may be from inside the host 2, and moisture inside the host 2 may enter the through-hole through the assembly gap between the shaft sleeve 222 and the second bracket 231a.

[0236] In another embodiment, the structural design may be adjusted such that only a portion of the area of ​​the clamp member 27 is exposed through the through-hole 213z of the first frame body 213a, and the first outer surface 222a of the shaft sleeve 222 is completely covered by the first frame body 213a (for example, the position and / or size of the through-hole in the first frame body 213a may be adjusted). Correspondingly, the sealing material in the through-hole 213z covers only the surface of the clamp member 27. Alternatively, in another embodiment, the through-hole 213z may not be provided in the first frame body 213a, and it may be sealed without filling it with sealing material, depending on the actual requirements.

[0237] As shown in Figure 72, the display 211 is mounted on the first host housing 213. Referring to Figures 72, 70, and 6, the display 211 may cover the first bracket 213b of the first host housing 213, the first host circuit board assembly 212, the electrical connection ends 261 and connection parts 264 of the flexible circuit board 26, and a portion of the first frame body 213a of the first host housing 213. The periphery of the first frame body 213a may surround the display 211. In addition, Figure 72 shows that when the host 2 is closed, the second outer surface 222f of the shaft sleeve 222 can be seen as the exterior surface of the host 2.

[0238] In short, in host 2, the shaft sleeve 222 of the rotary shaft assembly 22 is fixedly connected to the first part 21, and both the first shaft 221 and the second shaft 223 of the rotary shaft assembly 22 are fixedly connected to the second part 23, and the first part 21 can rotate together with the shaft sleeve 222 about the first shaft 221 and the second shaft 223.

[0239] The following describes the mechanical movements that occur in host 2 during the opening and closing process.

[0240] Figure 73 is a schematic side view of the host 2 in a closed state, and Figure 74 is a schematic top view of the rotary shaft assembly 22 of the host 2 in Figure 73. In Figures 73 and 74, the shaft sleeve 222 is shown cut to illustrate the internal state of the rotary shaft assembly 22. Note that the cross-section of the shaft sleeve 222 in Figure 73 is perpendicular to the cross-section of the shaft sleeve 222 in Figure 74. Figure 75 is a partially enlarged schematic view of position B in Figure 74.

[0241] As described above, when the host 2 is in the closed state, the locking portion 213d of the first portion 21 and the buckle 251e of the open button 25 form a buckle connection, and the first portion 21 is locked to the second portion 23.

[0242] As shown in Figures 73 and 75, when the host 2 is in the closed position, one end of the elastic member 228 presses the driven member 229 so that the driven member 229 maintains contact with the second portion 221b. The top of the first inclined surface 229a of the driven member 229 (i.e., the end of the first inclined surface 229a away from the plane 229b) may be in contact with the top of the inclined surface 221k of the second portion 221b of the first shaft 221 (i.e., the end of the inclined surface 221k closer to the plane 221m), and there is a gap between the plane 229b of the driven member 229 and the plane 221m of the second portion 221b. The force applied to the first inclined surface 229a by the inclined surface 221k may allow the driven member 229 to have a tendency to rotate in the opening direction, and the first portion 21 of the host 2 may rotate in the opening direction and open toward the second portion 23.

[0243] As shown in Figure 75, due to the alignment between the driven member 229 and the shaft sleeve 222, when the driven member 229 tends to rotate clockwise, the shaft sleeve 222 also tends to rotate in the opening direction. The shaft sleeve 222 is fixedly connected to the first portion 21. Therefore, the first portion 21 also tends to rotate in the opening direction. However, since the first portion 21 is locked to the second portion 23, the first portion 21 cannot actually rotate in the opening direction.

[0244] As shown in Figure 75, the other end of the elastic member 228 presses against the bump matching member 227, which in turn causes the bump matching member 227 to press against the spacer plate 222n.

[0245] Figure 76 is a schematic diagram of the AA cross-sectional structure of Figure 75. Figure 76 shows a cross-sectional view of the alignment structure including the bump alignment member 227 and the spacer plate 222n when the host 2 is in a closed state, and the bump 227a on the bump alignment member 227 is shown by a dashed line. As shown in Figure 76, the bump 227a is located on the chute 222q on the spacer plate 222n, and there is a specific gap between the bump 227a and the alignment groove 222p.

[0246] When the user presses the cap 251 of the open button 25, the buckle 251e of the open button 25 and the locking portion 213d of the first portion 21 cease to form a buckle connection, and the first portion 21 ceases to lock onto the second portion 23. In this case, the first portion 21 begins its first rotational stroke segment.

[0247] As shown in Figure 77 (in Figure 77, the shaft sleeve 222 is not shown in order to clarify the alignment between the driven member 229 and the second part 221b, and the same applies hereafter), the driven member 229 performs compound motion under the joint action of the elastic member 228 and the inclined plane 221k. The driven member 229 rotates in the opening direction and moves toward the second part 221b until the base portion of the first inclined plane 229a (i.e., the end of the first inclined plane 229a connected to the plane 229b) contacts the top of the inclined plane 221k and the plane 229b contacts the plane 221m (for structural design purposes, the effect of inertia on the position of the driven member 229 can be ignored). Referring to Figure 73, as the driven member 229 moves, the shaft sleeve 222 and the first part 21 also rotate in the opening direction around the second part 221b.

[0248] As shown in Figures 73 and 2, when the driven member 229, shaft sleeve 222, and first part 21 stop rotating, the first part 21 completes its first rotational stroke and opens to the second part 23 by an angle a, where angle a may be, for example, about 15°. In the first rotational stroke segment, it is easily understood that the first part 21 is rotationally driven by the shaft sleeve 222. Thus, the first part 21 rotates automatically, and there is no need for the user to apply any external force.

[0249] Referring to Figures 76 and 78, in the first rotational stroke segment, the shaft sleeve 222 rotates relative to the bump matching member 227, so that the bumps 227a of the bump matching member 227 slide within the chute 222q and gradually approach the matching groove 222p. When the first rotational stroke segment ends, each bump 227a can just reach the junction between the chute 222q and the matching groove 222p (as shown in Figure 78). In the first rotational stroke segment, the bumps 227a always slide smoothly within the chute 222q, and no displacement (or impact) of the shaft sleeve 222 in the rotational shaft direction occurs between the bump matching member 227 and the shaft sleeve 222, and the bump matching member 227 does not impact the shaft sleeve 222. Therefore, even if the user touches the first part 21, the user cannot experience any tactile feedback.

[0250] Alternatively, in another embodiment, when the first rotational stroke segment ends, the bump 227a may enter the alignment groove 222p. When the bump 227a enters the first alignment groove 222p from the chute 222q, a rotational shaft displacement of the shaft sleeve 222 occurs between the bump alignment member 227 and the shaft sleeve 222, and the bump alignment member 227 may impact the shaft sleeve 222. Thus, when the user touches the first portion 21, the user may experience tactile feedback.

[0251] As shown in Figure 77, after the first part 21 is opened by an angle a relative to the second part 23, the plane 229b contacts the plane 221m, and the resultant force applied by the elastic member 228 and the first shaft 221 to the driven member 229 in the axial direction of the main part 221g becomes zero. Therefore, the driven member 229 cannot continue to rotate solely by the drive of the elastic member 228 and the first shaft 221. In other words, the first part 21 cannot continue to rotate automatically. In this case, the user can rotate the first part 21 in the opening direction. The first part 21 can rotate the shaft sleeve 222 in the opening direction, and furthermore, the shaft sleeve 222 can rotate the driven member 229 in the opening direction. It is easy to understand that in the rotation process of the driven member 229, the plane 229b slides against the plane 221m. Therefore, the driven member 229 only rotates, and no axial displacement occurs in the main part 221g.

[0252] As shown in Figure 79, if the end of the plane 229b away from the first inclined plane 229a is in contact with the top of the inclined plane 221k (or if the top of the second inclined plane 229c is in contact with the top of the inclined plane 221k), the first part 21 can complete the second stroke segment. As shown in Figure 3, once the second stroke segment is completed, the first part 21 is opened by an angle b relative to the second part 23, where angle b may be, for example, about 75°. As described above, in the second stroke segment, the user needs to manually rotate the first part 21.

[0253] Referring to Figures 78 and 80, in the second rotational stroke segment, the bumps 227a sequentially enter the alignment grooves 222p. During the second rotational stroke segment, the bumps 227a can slide out of the alignment grooves 222p and enter the chute 222q. In the second rotational stroke segment, as the bumps 227a move in and out of the alignment grooves 222p, a displacement occurs between the bump alignment member 227 and the shaft sleeve 222 in the direction of rotation of the shaft sleeve 222, and the bump alignment member 227 can impact the shaft sleeve 222. Therefore, the user can experience tactile feedback.

[0254] As shown in Figure 3, after the first portion 21 is opened by an angle b relative to the second portion 23, the first portion 21 may begin to enter the third stroke segment. The rotational characteristics of the first portion 21 in the third stroke segment are similar to those of the first portion 21 in the first stroke segment, and the first portion 21 also rotates automatically in the third stroke segment. Details are shown below.

[0255] As shown in Figures 79 and 81, when the third stroke segment begins, the top of the second inclined plane 229c contacts the top of the inclined plane 221k. Under the combined action of the elastic member 228 and the inclined plane 221k, the driven member 229 performs a compound motion. The driven member 229 rotates in the opening direction and moves toward the second portion 221b until the base portion of the second inclined plane 229c (i.e., the end of the second inclined plane 229c away from the plane 229b) contacts the top of the inclined plane 221k. As the driven member 229 moves, the shaft sleeve 222 and the first portion 21 also rotate in the opening direction around the second portion 221b.

[0256] As shown in Figures 83 and 84, the limiting projection 222r of the shaft sleeve 222 can enter the limiting groove 232h of the third host housing 232, and the limiting projection 222r abuts against the inner wall of the limiting groove 232h. In this case, the shaft sleeve 222 cannot continue to rotate in the opening direction, and therefore the first part 21 also stops rotating.

[0257] When the driven member 229, shaft sleeve 222, and first part 21 stop rotating, the first part 21 completes the third rotational stroke segment. As shown in Figure 5, the first part 21 is opened by an angle c relative to the second part 23, where the angle c may be, for example, about 90°. In the third stroke segment, it is readily understood that the first part 21 is rotationally driven by the shaft sleeve 222. Thus, the first part 21 rotates automatically, and no external force needs to be applied by the user.

[0258] In this embodiment, the limiting groove 232h coincides with the limiting projection 222r, thereby allowing the operation of the first part 21 to be restricted via the third host housing 232. Since the third host housing 232 is larger and has better structural strength (compared to the rotary shaft assembly 22), the assembly reliability of the limiting groove 232h and the limiting projection 222r is high, which helps to ensure the matching reliability of the host 2. Based on practical requirements, in another embodiment, it may be understood that when the third stroke segment ends, the first part 21 can stop rotating due to the alignment between the two-step ladder of the driven member and the two-step ladder of the first shaft 221. There is no need to design the limiting projection 222r on the shaft sleeve, nor is there a need to provide the limiting groove 232h on the third host housing 232.

[0259] Referring to Figures 80 and 82, in the third rotational stroke segment, the bump 227a slides smoothly within the chute 222q, and no displacement of the shaft sleeve 222 in the rotational shaft direction occurs between the bump matching member 227 and the shaft sleeve 222, and the bump matching member 227 does not impact the shaft sleeve 222. Therefore, even if the user touches the first part 21, the user cannot experience any tactile feedback.

[0260] Referring to Figures 73, 67, and 62, in the process of opening the first portion 21, the electrical connection end 261 of the flexible circuit board 26 rotates with the first portion 21, causing the winding portion of the flexible circuit board 26 to gradually loosen and the diameter of the winding portion to gradually increase.

[0261] Based on the above description of the opening process of host 2, it is easily understood that throughout the process of closing the opened first part 21, the first part 21 must be manually rotated in the opposite direction to the opening direction until it is engaged with the open button. In the stroke in which the opening angle of the first part 21 decreases from angle b to angle a, the bumps 227a slide in and out of each matching groove 222p sequentially, so the bump matching members 227 may impact the shaft sleeve 222, thus providing tactile feedback. In another stroke, the bumps 227a slide smoothly within the chute 222q, so the bump matching members 227 do not impact the shaft sleeve 222, and therefore there is no tactile feedback. In addition, in the process of closing the first part 21, the electrical connection end 261 of the flexible circuit board 26 rotates with the first part 21, so the winding portion of the flexible circuit board 26 is gradually tightened, and the diameter of the winding portion may gradually decrease.

[0262] Based on the above description, it is readily apparent that the cam mechanism is configured to open and close the host 2 using an assembly structure comprising the first shaft 221 of the rotary shaft assembly 22, the driven member 229, the elastic member 228, and the shaft sleeve 222. The second shaft 223 of the rotary shaft assembly 22 is configured to mount and wind a flexible circuit board 26. In this embodiment, the two shafts, namely the first shaft 221 and the second shaft 223, are designed separately so that the flexible circuit board 26 can be easily assembled to the second shaft 223 and the shaft sleeve 222.

[0263] Due to manufacturing tolerances, the first shaft 221 and the second shaft 223 may not be concentric after assembly (the axis of the first shaft 221 may not overlap with the axis of the second shaft 223). Without countermeasures, stress may be generated when the rotating shaft assembly 22 performs mechanical motion, reducing the reliability of the rotating shaft assembly 22 and potentially causing abnormal noise. In this embodiment, the end 221d of the first shaft 221 coincides with the groove 223e of the second shaft 223, so that assembly tolerances can be absorbed and stress due to eccentricity can be reduced or avoided.

[0264] Unlike this embodiment, in another embodiment, the first shaft and the second shaft do not need to be connected, and a groove for accommodating the end of the first shaft does not need to be provided at the end of the second shaft. Alternatively, in another embodiment, the design does not need to involve winding the flexible circuit board around the shaft, and a single integrated shaft may be used instead of the first shaft 221 and the second shaft 223. In this case, the limiting member 226 can be canceled.

[0265] Based on the above description, it is readily apparent that an assembly structure including the elastic member 228 of the rotary shaft assembly 22, the bump matching member 227, and the shaft sleeve 222 can be used to provide tactile feedback in the opening and closing process of the host 2. In another embodiment, the tactile feedback design can be canceled. Specifically, the bump matching member 227 and the chute 222q and matching groove 222p on the spacer plate 222n of the shaft sleeve 222 can be canceled. In this case, the elastic member may directly press against the spacer plate 222n.

[0266] In this embodiment, as the shaft sleeve 222 rotates, the shaft contact member 224 attached to the shaft sleeve 222 rotates with the shaft sleeve 222, and the shaft contact member 224 maintains contact with the first shaft 221 and the second shaft 223. In other words, the shaft contact member 224 is in sliding contact with the first shaft 221 and the second shaft 223.

[0267] Two power supply paths for the host 2 antenna system

[0268] In this embodiment, both the first frame body 213a and the third host housing 232 of the host 2 can be used as antennas in the host 2's antenna system. The two power supply paths of the host 2's antenna system will be described below.

[0269] As shown in Figure 70, the first frame body 213a can contact the feed spring 212f of the first host circuit board assembly 212, thereby supplying radio frequency signals to the first frame body 213a via the feed spring 212f. In addition, the first frame body 213a can contact the ground springs 212b, 212c, 212d, and 212e of the first host circuit board assembly 212. This allows the first frame body 213a to be grounded. Therefore, the first frame body 213a can be used as an antenna.

[0270] As described above, the first frame body 213a is connected to the shaft sleeve 222, and the shaft contact member 224 on the shaft sleeve 222 contacts both the first shaft 221 and the second shaft 223, both of which are connected to the third host housing 232. Therefore, radio frequency signals can be transmitted from the first frame body 213a to the third host housing 232 via the shaft sleeve 222, the shaft contact member 224, the first shaft 221, and the second shaft 223. Thus, the third host housing 232 can also be used as an antenna.

[0271] The first host circuit board assembly 212 is connected to the first frame body 213a and the third host housing 232 via a physical and mechanical structure, forming the first power supply path of the antenna system.

[0272] When host 2 is in a closed state, there is a small gap between the first frame body 213a and the third host housing 232 in the axial direction of the first frame body 213a (or in the thickness direction of host 2), and this gap is, for example, 0.1 mm. This gap allows the first frame body 213a to supply power to the third host housing 232 via coupling, thereby allowing the third host housing 232 to be used as an antenna.

[0273] The first host circuit board assembly 212 is connected to the first frame body 213a via a physical mechanical structure and is then electrically coupled to the third host housing 232 to form a second power supply path for the antenna system.

[0274] When host 2 is in a closed state, the radiation from the third host housing 232 in the second power supply path is strong, and host 2 and the first frame body 213a work together via the third host housing 232 to ensure antenna performance. When host 2 is in an open state, the radiation from the third host housing 232 in the second power supply path is weak. In this case, antenna performance is ensured mainly by relying on the radiation from the first frame body 213a. However, compared to when host 2 is in a closed state, the radiation direction of the antenna system of the open host 2 changes, so that the communication requirements of the open host 2 can be met. Therefore, in this embodiment, two power supply paths for the antenna system are designed so that the communication requirements of host 2 can be met in the open and closed states, and the antenna performance of host 2 can be ensured in different states.

[0275] In another embodiment, it is readily apparent that the second power supply path may not be necessary. In other words, the first frame body 213a does not supply power to the third host housing 232 via the coupling.

[0276] In this embodiment, the flexible circuit board 26 may interfere with the heat dissipation performance of the first frame body 213a and the third host housing 232, and the interference becomes more serious as the length of the flexible circuit board 26 increases. As described above, the grounding portion 264a of the flexible circuit board 26 can be connected to the first frame body 213a via a conductor. In this way, the flexible circuit board 26 can be grounded, and interference of the flexible circuit board 26 with the antenna radiation performance of the host 2 can be avoided. In another embodiment, the grounding design described above may not be implemented for the flexible circuit board 26, depending on the product requirements.

[0277] Earphone 3

[0278] In this embodiment, the structures of the first earphone 31 and the second earphone 32 can be identical. The first earphone 31 will be described below as an example.

[0279] As shown in Figures 85 and 86, the first earphone 31 may include an earplug 311, an earplug support assembly 316, a first electrode 312, an earphone front housing assembly 313, a second electrode 314, an earphone rear housing assembly 315, and an electronic assembly 317. Both the earplug support assembly 316 and the first electrode 312 may be attached to one end of the earphone front housing assembly 313, and both the second electrode 314 and the earphone rear housing assembly 315 may be attached to the other end of the earphone front housing assembly 313. The earplug 311 and the earplug support assembly 316 are located at the same end of the earphone front housing assembly 313, and the earplug 311 is attached to the end of the earplug support assembly 316 away from the earphone front housing assembly 313. The electronic assembly 317 can be mounted in the space enclosed by the earplug support assembly 316, the first electrode 312, the earphone front housing assembly 313, the second electrode 314, and the earphone rear housing assembly 315.

[0280] In the following, we will first describe the structure and assembly of the earplug 311, earplug support assembly 316, first electrode 312, earphone front housing assembly 313, second electrode 314, and earphone rear housing assembly 315 in the first earphone 31, and then describe the structure and assembly of the electronic assembly 317.

[0281] As shown in Figure 85, in this embodiment, the first electrode 312, the earphone front housing assembly 313, the second electrode 314, and the earphone rear housing assembly 315 may form a substantially octahedral appearance. The outer surface of the octahedron may include planes and arcuate faces. The planes and arcuate faces are alternately connected and arranged to form a circle (specifically, each plane is connected between two arcuate faces, and each arcuate face is connected between two planes). The octahedral appearance of the first earphone 31 is a centrally symmetrical shape. In another embodiment, the first earphone may alternatively have a different centrally symmetrical appearance shape. For example, the first earphone may be substantially cylindrical, tetrahedron, etc.

[0282] In this embodiment, the radial dimension of the first earphone 31 may be greater than the groove depth of the first housing groove 213y. For example, the radial dimension of the first earphone 31 may be at least twice the groove depth of the first housing groove 213y. The radial dimension may be the distance between two opposing planes on the first earphone 31.

[0283] Earphone front housing assembly 313

[0284] As shown in Figures 87, 88, and 89, the earphone front housing assembly 313 may include the earphone front housing 313z, the noise reduction microphone mesh 313j, and the earphone magnet 313g.

[0285] As shown in Figures 87 and 88, the earphone front housing 313z may be a hollow tubular structure having openings at both ends. The earphone front housing 313z may include a first portion 313a, a second portion 313b, and a third portion 313c that are connected sequentially. The circumferential length of the first portion 313a may be shorter than the circumferential length of the second portion 313b, and the circumferential length of the second portion 313b may be shorter than the circumferential length of the third portion 313c. The circumferential length refers to the magnitude in the direction of the centerline surrounding the tubular structure of the earphone front housing 313z. The third portion 313c may be a substantially octahedral tubular structure, and the walls of the third portion 313c may include flat portions and arc-shaped portions. The flat sections and arc-shaped sections are alternately connected and arranged to form a circle (specifically, each flat section is connected between two arc-shaped sections, and each arc-shaped section is connected between two flat sections).

[0286] As shown in Figures 87 and 90, the end of the first portion 313a, away from the second portion 313b, may form a mounting groove 313f, which may enclose a circle. A sound-receiving channel 313e may be further provided in the wall of the earphone front housing 313z, which may extend in a substantially linear manner. One end of the sound-receiving channel 313e passes through the bottom surface of the mounting groove 313f, and the other end of the sound-receiving channel 313e is connected to the internal cavity of the earphone front housing 313z. A through hole 313d may be provided in the second portion 313b, which is connected to the internal cavity of the earphone front housing 313z.

[0287] Noise Reduction Microphone Mesh 313j

[0288] The noise reduction microphone mesh 313j may be substantially sheet-like and may include multiple material layers such as an acoustic mesh and an adhesive layer. As shown in Figures 89 and 90, the noise reduction microphone mesh 313j may be fixed to the front housing 313z, and the end of the sound-receiving channel 313e away from the mounting groove 313f is sealed so that sound in the sound-receiving channel 313e can pass through the noise reduction microphone mesh 313j.

[0289] 313g magnets for earphones

[0290] As shown in Figure 89, the earphone magnet 313g in this embodiment may be a single magnet. The earphone magnet 313g may have a single magnetic field direction. Alternatively, the earphone magnet 313g may have at least two magnetic field directions, and the earphone magnet 313g may form a Halbach array (which can be obtained by magnetizing different physical regions of a single magnet in different directions). For example, the earphone magnet 313g may be a Halbach array having two different magnetic field directions.

[0291] In another embodiment, the earphone magnet may be formed by joining at least two single magnets. The earphone magnet may have at least two magnetic field directions, and the earphone magnet may form a Halbach array.

[0292] As shown in Figure 89, the earphone magnet 313g in this embodiment may have a substantially curved plate-like structure, and this curved plate-like structure may be bent in a direction surrounding the center line of the first earphone 31. The shape of the earphone magnet 313g may conform to the shape of the inner wall of the third portion 313c of the earphone front housing 313z. The earphone magnet 313g may be fixed to the inner wall of the third portion 313c of the earphone front housing 313z, for example, to the inner wall of the arc-shaped portion of the third portion 313c.

[0293] As shown in Figure 89, in this embodiment, there may be four earphone magnets 313g, which are evenly distributed at equal intervals on the inner wall of the third portion 313c, and one earphone magnet 313g is attached to the inner wall of the arc-shaped portion of the third portion 313c. The specifications of the four earphone magnets 313g may be the same, and the magnetic field directions of the four earphone magnets 313g may coincide.

[0294] In another embodiment, the number of earphone magnets may be designed based on product requirements. For example, there may be only one earphone magnet, which may surround a closed ring structure, and the shape of the earphone magnet may match the shape of the inner wall of the third portion 313c. The earphone magnets may form a Halbach arrangement, and the four regions corresponding one-to-one to the earphone magnets and the four arcuate portions of the third portion 313c may have different magnetic field directions.

[0295] Alternatively, for example, there may be three earphone magnets, each earphone magnet being a bent structure surrounding the centerline of the first earphone, and these three earphone magnets may be distributed at intervals along the inner wall of the third part of the earphone front housing. The three earphone magnets may be evenly distributed at equal intervals, or unevenly distributed at unequal intervals. In this design, the third part of the earphone front housing may be a substantially octahedral tubular structure or a substantially cylindrical structure.

[0296] Assembly technique for assembly jig 100 and earphone magnet 313g

[0297] In this embodiment, an assembly jig may be used to assist in the mounting of the earphone magnet 313g to ensure accurate magnet installation. Depending on the product assembly requirements, the earphone magnet 313g and the earphone front housing 313z may be assembled directly, and the assembly jig may be customized based on this. Alternatively, as shown in Figure 91, the earplug support assembly 316, the first electrode 312, etc., may be first attached to the earphone front housing 313z to form an intermediate assembly 200, and then the earphone magnet 313g may be attached to the earphone front housing 313z of the intermediate assembly 200. The assembly jig may be customized based on this. The latter assembly method will be described below as an example.

[0298] As shown in Figures 91 and 92, this embodiment provides an assembly jig 100 for assembling the intermediate assembly 200. The intermediate assembly 200 may include a pre-assembled earplug support assembly 316, a first electrode 312, and an earphone front housing 313z (the assembly structure of the earplug support assembly 316, the first electrode 312, and the earphone front housing 313z is described in detail below). To facilitate the removal, placement, and positioning of the intermediate assembly 200, a clamp 300 may be sleeved around the earphone front housing 313z within the intermediate assembly 200. The clamp 300 may be hoop-shaped and will wrap around and clamp the earphone front housing 313z. The clamp 300 may also be used in another assembly process of the first earphone 31.

[0299] As shown in Figure 92, the assembly jig 100 of this embodiment may include a base 120, a jig magnet 130, and an upper cover 110.

[0300] As shown in Figures 93 and 94, the base 120 may include a base plate 121 and a base magnet 122 fixed to the base plate 121. The base plate 121 may be provided with upper cover positioning holes 121a. For example, there may be two upper cover positioning holes 121a, each located at either end of the base plate 121. A workpiece positioning groove 121c, a jig magnet mounting groove 121b, and a clamp housing groove 121e may be further provided in a region of the base plate 121 (for example, the region on the right side of the perspective view in Figure 93).

[0301] As shown in Figure 93, the inner surface of the bottom of the workpiece positioning groove 121c may be formed by the outer surface of the first electrode 312. A through hole 121d may be provided in the bottom wall of the workpiece positioning groove 121c, and this through hole 121d is configured to allow the earphone front housing 313z and the earplug support assembly 316 to pass through.

[0302] As shown in Figure 93, the jig magnet mounting grooves 121b may be located outside the workpiece positioning groove 121c and may be connected to the workpiece positioning groove 121c. The jig magnet mounting grooves 121b may be considered to penetrate the side wall of the workpiece positioning groove 121c. The number of jig magnet mounting grooves 121b may correspond to the number of jig magnets 130. For example, there may be four jig magnet mounting grooves 121b. The four jig magnet mounting grooves 121b may be distributed at equal intervals around the workpiece positioning groove 121c.

[0303] Referring to Figures 92 and 94, one fixture magnet 130 may be mounted in each fixture magnet mounting groove 121b. The fixture magnet 130 may consist of only a single magnet, or it may be composed of at least two single magnets connected together.

[0304] As shown in Figure 93, the clamp housing groove 121e may be located around the workpiece positioning groove 121c and may be connected to the workpiece positioning groove 121c. The clamp housing groove 121e may be located between the two fixture magnet mounting grooves 121b.

[0305] As shown in Figure 93, the same workpiece positioning groove 121c, through hole 121d, jig magnet mounting groove 121b, and clamp housing groove 121e may also be provided in another area of ​​the base plate 121 (for example, the area on the left in the perspective view of Figure 93). This design allows the assembly jig 100 to assemble two intermediate assemblies 200 simultaneously. The positioning groove 121c, through hole 121d, jig magnet mounting groove 121b, and clamp housing groove 121e in the two areas of the base plate 121 may be located between the two upper cover positioning holes 121a.

[0306] As shown in Figures 95 and 96, the upper cover 110 may include a cover plate 111, an upper cover positioning rod 113, an upper cover limiting rod 112, and an upper cover magnet 114.

[0307] There may be two upper cover positioning rods 113, each located at both ends of the cover plate 111. Through-holes 111a for magnet placement may be provided in a region of the cover plate 111 (for example, the region on the right in the perspective view of Figure 95). The number of through-holes 111a for magnet placement may correspond to the number of earphone magnets 313g. For example, there may be four through-holes 111a for magnet placement. Four through-holes 111a for magnet placement may form a roughly 2x2 matrix.

[0308] The upper cover limiting rod 112 is positioned on the side of the cover plate 111 in the thickness direction, and the center of the upper cover limiting rod 112 may be approximately located between the four magnet placement through holes 111a. In addition, for each magnet placement through hole 111a and the upper cover limiting rod 112, a portion of the projection of the upper cover limiting rod 112 in the axial direction of the magnet placement through hole 111a fits within the projection of the magnet placement through hole 111a in the axial direction of the magnet placement through hole 111a. In other words, as seen from Figure 95, each magnet placement through hole 111a has a portion of the upper cover limiting rod 112, which may be called a limiting portion. It is easily understood that the number of limiting portions is the same as the number of earphone magnets 313g. The shape of the upper cover limiting rod 112 can be adapted to the shape of the internal cavity of the earphone front housing 313z.

[0309] The magnet 114 for the upper cover may be fixed to the cover plate 111 and may be located on the same side of the cover plate 111 as the upper cover limiting rod 112.

[0310] As shown in Figures 95 and 96, the same magnet placement through-holes 111a and upper cover limiting rod 112 may also be provided in another area of ​​the cover plate 111 (for example, the left-hand area in the perspective view of Figure 95). This design allows the assembly jig 100 to assemble two intermediate assemblies 200 simultaneously. The magnet placement through-holes 111a and upper cover limiting rod 112 in the two areas of the cover plate 111 may be located between the two upper cover positioning rods 113.

[0311] The following outlines the process of attaching four earphone magnets 313g to a single intermediate assembly 200 using the assembly jig 100, with reference to Figures 97 to 101.

[0312] Referring to Figures 91 and 97, first, the clamp 300 and intermediate assembly 200 are positioned on the base 120, with the annular portion of the clamp 300 positioned in the workpiece positioning groove 121c and the other portion of the clamp 300 positioned in the clamp housing groove 121e. The earplug support assembly 316 and the earphone front housing 313z enter the through hole 121d. The first electrode 312 enters the workpiece positioning groove 121c, and the outer surface of the first electrode 312 coincides with the inner surface of the workpiece positioning groove 121c. In this case, each jig magnet 130 may correspond to one mounting position in the earphone front housing 313z for mounting the earphone magnet 313g.

[0313] Referring to Figures 98, 96, and 97, the upper cover 110 is attached to the base 120 such that the cover plate 111 contacts the base 120. The upper cover positioning rod 113 is inserted into the upper cover positioning hole 121a, thereby causing the upper cover magnet 114 to magnetically attract the base magnet 122. Referring to Figures 96 and 91, in this case, the upper cover limiting rod 112 within the upper cover 110 is inserted into the internal cavity of the earphone front housing 313z. Referring to Figures 99, 100, and 94, each magnet placement through-hole 111a has a portion of the workpiece positioning groove 121c. In other words, the protrusions in different regions of the workpiece positioning groove 121c in the axial direction of the magnet placement through-hole 111a each enter into each magnet placement through-hole 111a. Viewed from Figures 99 and 100, each magnet placement through-hole 111a of the upper cover 110 has a portion of the earphone front housing 313z. In other words, the protrusions in different areas of the earphone front housing 313z in the axial direction of the magnet placement through-hole 111a each enter into the respective magnet placement through-hole 111a.

[0314] In addition, as shown in Figure 100, a gap B is formed between each limiting portion of the upper cover limiting rod 112 and the inner wall of the earphone front housing 313z (only one gap B is shown in the figure for simplification). Each gap B is used to mount one earphone magnet 313g. A jig magnet 130 is located near each gap B.

[0315] As shown in Figure 101, four earphone magnets 313g are inserted into four gaps B through four magnet placement through holes 111a, so that there is one earphone magnet 313g in each gap B, and each earphone magnet 313g is positioned in a mounting position within the earphone front housing 313z. Fixture magnets 130 near each gap B magnetically attract the earphone magnets 313g in the gap B, thereby holding the earphone magnets 313g in their mounting positions within the earphone front housing 313z. This completes the pre-positioning of the earphone magnets 313g.

[0316] Next, the top cover 110 can be removed to expose the intermediate assembly 200 and the pre-positioned earphone magnet 313g within the intermediate assembly 200. The earphone magnet 313g can then be fixed to the inner wall of the earphone front housing 313z using an appropriate technique. For example, the earphone magnet 313g can be bonded to the inner wall of the earphone front housing 313z using a dispensing technique. The adhesive used in the dispensing technique may be, for example, a fast-drying adhesive.

[0317] It is easily understood from the above description that the base 120 can position the intermediate assembly 200 well, the matching structure including the upper cover 110 and the base 120 can accurately limit the mounting space for the earphone magnet 313g, and the jig magnet 130 can easily and reliably hold the earphone magnet 313g in the mounting position on the earphone front housing 313z. Therefore, by using the assembly jig 100, the assembly accuracy and reliability of the earphone magnet 313g can be greatly improved, the assembly technique can be simplified, and good mass production can be achieved.

[0318] First electrode 312

[0319] As shown in Figure 102, the first electrode 312 may include an electrode body 312a and a conductive portion 312b. The electrode body 312a may be a substantially ring structure surrounding the centerline of the first earphone 31. The conductive portion 312b may be substantially columnar and may protrude from the inner surface of the electrode body 312a. The first electrode 312 may be made of a conductive material, such as a metallic material.

[0320] Referring to Figures 102 and 87, the first electrode 312 can be attached to the earphone front housing 313z. The electrode body 312a of the first electrode 312 coincides with the second portion 313b of the earphone front housing 313z. The conductive portion 312b of the first electrode 312 passes through a through hole 313d in the earphone front housing 313z and is electrically connected to the circuit board of the first earphone circuit board assembly (described below) located in the internal cavity of the earphone front housing 313z, thereby allowing the first electrode 312 to be used as a charging electrode. A detailed description of the assembly structure is provided below.

[0321] Earplug support assembly 316

[0322] As shown in Figures 103, 104, and 105, the earplug support assembly 316 may include an earplug support 316b, a front ventilation acoustic mesh 316a, and a speaker mesh 316c.

[0323] As shown in Figures 103 to 105, the earplug support 316b may include a support 316u, a first skirt edge 316v, and a second skirt edge 316w. The support 316u may be a substantially hollow tubular structure with openings at both ends. Both the first skirt edge 316v and the second skirt edge 316w may be bosses protruding from the outer circumferential surface of the support 316u, and both the first skirt edge 316v and the second skirt edge 316w may surround the support 316u. Both the first skirt edge 316v and the second skirt edge 316w may be located between the ends of the support 316u. There is a specific gap between the first skirt edge 316v and the second skirt edge 316w.

[0324] As shown in Figures 106 and 103, the end of the support 316u near the second skirt edge 316w may have a notch and form a substantially C-shaped structure. This end of the support 316u may further have a front ventilation hole 316x, which passes through the wall of the support 316u. The opening of the front ventilation hole 316x on the outer circumferential surface of the support 316u may be located on the side of the second skirt edge 316w facing the first skirt edge 316v, and this opening may be connected to the second skirt edge 316w.

[0325] As shown in Figure 105, the end of the support 316u near the first skirt edge 316v can form a mounting groove 316t, and a through hole is provided in the bottom wall of the mounting groove 316t, which communicates with the internal cavity of the support 316u.

[0326] In this embodiment, the entire earplug support 316b may be manufactured using a conductive material, or only a portion of the earplug support 316b may be manufactured using a conductive material. The conductive material is, for example, a metal. The earplug support 316b can house a speaker within the electronic assembly 317 (described below). Therefore, the earplug support 316b may also be called a voice-emitting mouth.

[0327] The forward-vented acoustic mesh 316a may be substantially sheet-like and may include multiple material layers such as an acoustic mesh and an adhesive layer. A curved forward-vented acoustic mesh 316a is illustrated. As shown in Figure 105, the forward-vented acoustic mesh 316a may include a fastening region 316z and a blocking region 316y. The fastening region 316z may be ring-shaped. The blocking region 316y may be rectangular strip-shaped and may be connected to the inside of the fastening region 316z. The blocking region 316y can allow air and sound waves to pass through.

[0328] As shown in Figures 105, 104, and 106, the front vent acoustic mesh 316a can be attached to the earplug support 316b. The fastening region 316z can be attached to the side of the second skirt edge 316w that is away from the first skirt edge 316v. For example, the adhesive layer within the fastening region 316z can be bonded to the side of the second skirt edge 316w. The blocking region 316y can be folded into the internal cavity of the support 316u and attached to the inner wall of the support 316u. For example, the adhesive layer of the blocking region 316y can be bonded to the inner wall of the support 316u. In addition, the blocking region 316y can block the front vent 316x.

[0329] Referring to Figures 103, 104, and 87, the earplug support 316b can be mounted within the mounting groove 313f of the earphone front housing 313z. For example, the earplug support 316b can be bonded to the bottom surface of the mounting groove 313f via an adhesive layer within the fastening region 316z. A more detailed description of the assembly structure is provided below.

[0330] Speaker Mesh 316c

[0331] As shown in Figure 105, the speaker mesh 316c may be substantially sheet-like and may include multiple material layers such as an acoustic mesh, an adhesive layer, and a PET sheet. The speaker mesh 316c may be provided with multiple sound-emitting holes.

[0332] As shown in Figure 105, the speaker mesh 316c can be attached to the mounting groove 316t of the support 316u. Sound from within the internal cavity of the support 316u (sound from the speaker, as described below) enters the human ear through the speaker mesh 316c.

[0333] Depending on product requirements, in other embodiments the earplug support may have yet another suitable structure and is not limited to the above description. The front vent may be provided in the earphone front housing 313z instead of in the earplug support. For example, the front vent may be provided in the first portion 313a of the earphone front housing 313z and connected to the sound-receiving channel 313e. The opening of the front vent may be small (e.g., less than 0.22 mm). In this case, the front vent acoustic mesh 316a may be omitted.

[0334] Earplugs 311

[0335] As shown in Figures 107, 108, and 109, the earplug 311 may include an inner earplug cover 311a and an outer earplug cover 311b, and the inner earplug cover 311a and the outer earplug cover 311b may be fixedly connected.

[0336] As shown in Figures 108 and 109, the inner earplug cover 311a may be a substantially hollow rotating body structure with openings at both ends. Multiple sound-emitting through-holes 311d may be formed at one end of the inner earplug cover 311a in the axial direction, and all of these sound-emitting through-holes 311d are connected to the internal cavity of the inner earplug cover 311a. These sound-emitting through-holes 311d are spaced apart from each other and may be arranged according to a predetermined rule.

[0337] As shown in Figure 108, in one implementation configuration, these sound-emitting through-holes 311d may be arranged side by side. The shapes of the sound-emitting through-holes 311d may be identical or similar. For example, each sound-emitting through-hole 311d may be a runway-shaped hole. In another implementation configuration, the shape and arrangement of the sound-emitting through-holes 311d may be designed based on product requirements. For example, Figure 110 shows four types of shapes and arrangements of sound-emitting through-holes 311d.

[0338] In this embodiment, a speaker is provided in the internal cavity of the inner earplug cover 311a, and sound from the speaker can enter the human ear through the sound-emitting through-hole 311d (as will be further explained below). The end of the inner earplug cover 311a where the sound-emitting through-hole 311d is formed may have an ear scale-proof structure, which prevents earwax from entering the speaker.

[0339] As shown in Figure 109, an additional slot 311g is formed in the inner wall of the inner earplug cover 311a, the slot 311g encircling a circle, and the slot 311g may be separated from the sound-emitting through-hole 311d. The slot 311g is configured to coincide with the first skirt edge 316v of the earplug support 316b, and the inner earplug cover 311a is attached to the earplug support 316b (details of the assembly structure will be described later).

[0340] As shown in Figures 108 and 109, a plurality of second bumps 311c may be provided on the surface of the end of the inner earplug cover 311a away from the sound-emitting through-hole 311d, and these second bumps 311c may be spaced apart from each other and enclose a circle.

[0341] As shown in Figures 107 to 109, the outer earplug cover 311b may be a substantially hollow rotating body having openings at both ends. One end of the outer earplug cover 311b in the axial direction may be fixedly connected to the end of the inner earplug cover 311a in which the sound-releasing through-hole 311d is formed. The outer earplug cover 311b may surround the inner earplug cover 311a. Multiple first bumps 311f may be provided on the inner wall of the other end of the outer earplug cover 311b in the axial direction. These second bumps 311c are spaced apart from each other and may enclose a circle.

[0342] In this embodiment, the inner earplug cover 311a may be made of a rigid, less deformable material to form a secure connection to the earplug support 316b and to house and protect the earplug support 316b. The outer earplug cover 311b may be made of a softer, more deformable material to fit into and conform to the ear canal.

[0343] Second electrode 314

[0344] As shown in Figure 111, the second electrode 314 may include an electrode body 314a, an inner bearing base 314b, and a conductive portion 314c. The electrode body 314a may be a substantially ring structure surrounding the centerline of the first earphone 31. The inner bearing base 314b is located inside the electrode body 314a and may surround the electrode body 314a. The conductive portion 314c may be substantially columnar and may be located inside the electrode body 314a and may protrude from the inner bearing base 314b. The second electrode 314 may be made of a conductive material, such as a metallic material.

[0345] Referring to Figures 111 and 88, the second electrode 314 may be connected to the earphone front housing 313z. The electrode body 314a of the second electrode 314 coincides with the third portion 313c of the earphone front housing 313z. The conductive portion 314c of the second electrode 314 is located within the second electrode 314 and is electrically connected to a circuit board (described below) located within the second earphone circuit board assembly 317g, thereby allowing the second electrode 314 to be used as another charging electrode. A detailed description of the assembly structure is provided further below.

[0346] Earphone rear housing assembly 315

[0347] As shown in Figures 112, 113, and 114, the earphone rear housing assembly 315 may include the earphone rear housing 315a, a first main microphone mesh 315g, an antenna 315f, a rear housing support 315d, and a second main microphone mesh 315e. The first main microphone mesh 315g, the antenna 315f, the rear housing support 315d, and the second main microphone mesh 315e may all be housed inside the earphone rear housing 315a.

[0348] As shown in Figures 113, 114, and 115 (Figure 115 is a schematic diagram of the AA cross-sectional structure of the earphone rear housing 315a in Figure 112), the earphone rear housing 315a may be substantially bowl-shaped. The earphone rear housing 315a may include a bottom wall 315h and a circumferential side wall 315i surrounding the periphery of the bottom wall 315h, with the circumferential side wall 315i and the bottom wall 315h forming an open cavity. The bottom wall 315h may be provided with a sound-collecting through-hole 315c, which communicates with the internal cavity of the earphone rear housing 315a. The circumferential side wall 315i may be provided with a plurality of wind noise prevention through-holes 315b, which are connected to the internal cavity of the earphone rear housing 315a. For example, there may be two wind noise prevention through-holes 315b, which may be distributed symmetrically on either side of the sound-collecting through-hole 315c. Alternatively, the number of wind noise prevention through-holes 315b may be two or more, for example, three or four, and these wind noise prevention through-holes 315b may be spaced apart.

[0349] Antenna 315f

[0350] In this embodiment, antenna 315f may be a common-mode antenna and may include two antenna splitters that are physically separated but can operate in a coupled manner. The two antenna splitters are coupled in such a way that antenna 315f can operate in a specific frequency band. Antenna 315f may be, for example, a Bluetooth antenna, and the specific frequency band may be, for example, 2.4 GHz.

[0351] As shown in Figure 116, in the implementation configuration 1 of this embodiment, the antenna 315f may include a first antenna branch 315z and a second antenna branch 315y. The first antenna branch 315z and the second antenna branch 315y may each have a roughly curved, elongated strip-like structure.

[0352] As shown in Figure 116, the first antenna branch 315z may include a first segment 315z3 and a second segment 315z4, which are bent and connected. For example, the first segment 315z3 and the second segment 315z4 may be approximately perpendicular to each other. The end of the first segment 315z3 away from the second segment 315z4 is called the tip 315z1, and the end of the second segment 315z4 away from the first segment 315z3 is called the tail end 315z2. In other words, the tip 315z1 and the tail end 315z2 are two opposing ends of the first antenna branch 315z, respectively. The first segment 315z3 may be approximately straight, and the second segment 315z4 may be bent.

[0353] As shown in Figure 116, similarly, the second antenna branch 315y may include a third segment 315y3 and a fourth segment 315y4, which are bent and connected. For example, the third segment 315y3 and the fourth segment 315y4 may be approximately perpendicular to each other. The end of the third segment 315y3 away from the fourth segment 315y4 is called the tip 315y1, and the end of the fourth segment 315y4 away from the third segment 315y3 is called the tail end 315y2. In other words, the tip 315y1 and the tail end 315y2 are two opposing ends of the second antenna branch 315y, respectively. The third segment 315y3 may be approximately straight, and the fourth segment 315y4 may be bent. As shown in Figure 116, the first antenna branch 315z and the second antenna branch 315y can be essentially centrally symmetric. In other words, the first antenna branch 315z essentially overlaps with the second antenna branch 315y after being rotated 180° around the center. In the entire region occupied by the first antenna branch 315z and the second antenna branch 315y, the first antenna branch 315z extends from its tip 315z1 to its tail 315z2, bending along an outward-inward path (for example, in the view of Figure 116, the first antenna branch 315z is bent clockwise), and the second antenna branch 315y extends from its tip 315y1 to its tail 315y2, bending along an outward-inward path (for example, in the view of Figure 116, the second antenna branch 315y is bent clockwise). Tips 315z1 and 315y1 are on the outside, and tip 315z1 is separated from tip 315y1. Both tail ends 315z2 and 315y2 are located between the front ends 315z1 and 315y1, and tail end 315z2 is close to tail end 315y2, so tail ends 315z2 and 315y2 are coupled, which allows antenna 315f to operate in a frequency band of 2.4G.

[0354] In the following description, both tip 315z1 and tip 315y1 are connected to the feed point on the circuit board of the third earphone circuit board assembly 317h within the electronic assembly 317, thereby enabling both the first antenna branch 315z and the second antenna branch 315y to transmit and receive signals. The two feed points may be symmetrical with respect to the center line of the first earphone 31.

[0355] Referring to Figures 116, 112, and 115, in implementation form 1, the antenna 315f may be positioned on the inner wall of the earphone rear housing 315a, with both the tip 315z1 and tip 315y1 located on the inner surface of the circumferential side wall 315i of the earphone rear housing 315a, and both the tail end 315z2 and tail end 315y2 located on the inner surface of the bottom wall 315h of the earphone rear housing 315a. For the first antenna branch section 315z, the second segment 315z4 of the first antenna branch section 315z may extend from the tip 315z1 to the tail end 315z2, roughly in the direction from the peripheral side wall 315i to the bottom wall 315h. Similarly, for the second antenna branch section 315y, the fourth segment 315y4 of the second antenna branch section 315y may also extend from the tip 315y1 to the tail end 315y2, roughly in the direction from the peripheral side wall 315i to the bottom wall 315h.

[0356] The antenna 315f may be formed on the inner wall of the earphone rear housing 315a, for example, using the laser direct structuring (LDS) technique. In other words, the antenna 315f may be, for example, an LDS antenna.

[0357] By adjusting the wearing angle of the first earphone 31 in the ear canal, the first antenna branch 315z or the second antenna branch 315y can be brought closer to the human body. The antenna performance of the antenna branch closer to the human body deteriorates (for example, antenna efficiency decreases), and the signal quality of the antenna deteriorates.

[0358] Therefore, when the first earphone 31 operates at different wearing angles, the first earphone 31 can detect which antenna branch of the antenna 315f has better signal quality, select the antenna branch with better signal quality (the antenna branch further away from the human body) as the feed end, and use the other antenna branch as the ground end. For example, the signal quality of the antenna branch can be determined by detecting the received signal strength indicator (RSSI) value. The first earphone 31 may incorporate a control unit and a switch circuit. The control unit is configured to determine the antenna branch with better signal quality and, via the switch circuit, switch the antenna branch to the feed end and the antenna branch with worse signal quality to the ground end. For example, the control unit may be located on a circuit board in the second earphone circuit board assembly 317g (described below). For example, the switch circuit may be located on a circuit board in the third earphone circuit board assembly 317h (described below). It should be understood that the location of the control unit and switch circuits may be designed based on requirements and is not limited to the above description.

[0359] For example, if the first earphone 31 is worn at a first wearing angle, the second antenna branch 315y will be further away from the human body. The first earphone 31 may detect that the signal quality of the second antenna branch 315y is better and select the second antenna branch 315y as the feed end, and use the first antenna branch 315z as the ground end. Alternatively, if the first earphone 31 is worn at a second wearing angle, the first antenna branch 315z will be further away from the human body. The first earphone 31 may detect that the signal quality of the first antenna branch 315z is better and select the first antenna branch 315z as the feed end, and use the second antenna branch 315y as the ground end.

[0360] In this implementation, the antenna 315f is designed with two antenna branch sections that are centrally distributed and operate in a coupled manner. This ensures that the antenna performance of the first earphone 31 is maintained even when the user wears the first earphone 31 at different angles, thereby ensuring the communication quality of the first earphone 31 and guaranteeing a good user experience.

[0361] As shown in Figure 117, in the implementation configuration 2 of this embodiment, the antenna 315f may include a first antenna branch 315x and a second antenna branch 315w. The first antenna branch 315x and the second antenna branch 315w may each have a roughly curved, elongated strip-like structure.

[0362] As shown in Figure 117, the first antenna branch 315x may include a first segment 315x3 and a second segment 315x4, which are bent and connected. For example, the first segment 315x3 and the second segment 315x4 may be approximately perpendicular to each other. The end of the first segment 315x3 away from the second segment 315x4 is called the tip 315x1, and the end of the second segment 315x4 away from the first segment 315x3 is called the tail end 315x2. In other words, the tip 315x1 and the tail end 315x2 are two opposing ends of the first antenna branch 315x, respectively. The first segment 315x3 may be approximately straight, and the second segment 315x4 may be bent.

[0363] As shown in Figure 117, similarly, the second antenna branch 315w may include a third segment 315w3 and a fourth segment 315w4, which are bent and connected. For example, the third segment 315w3 and the fourth segment 315w4 may be approximately perpendicular to each other. The end of the third segment 315w3 away from the fourth segment 315w4 is called the tip 315w1, and the end of the fourth segment 315w4 away from the third segment 315w3 is called the tail end 315w2. In other words, the tip 315w1 and the tail end 315w2 are two opposing ends of the second antenna branch 315w, respectively. The third segment 315w3 may be approximately straight, and the fourth segment 315w4 may be bent.

[0364] As shown in Figure 117, the first antenna branch 315x and the second antenna branch 315w can be basically centrally symmetrical.

[0365] Unlike implementation form 1, in implementation form 2, in the entire region occupied by the first antenna branch 315x and the second antenna branch 315w, the first antenna branch 315x extends from its tip 315x1 to its tail 315x2, bending along an inward-outward path (for example, in the view of Figure 117, the first antenna branch 315x is bent in a counterclockwise direction), and the second antenna branch 315w extends from its tip 315w1 to its tail 315w2, bending along an inward-outward path (for example, in the view of Figure 117, the second antenna branch 315w is bent in a counterclockwise direction). The 315x1 at the front, 315x2 at the rear, 315w1 at the front, and 315w2 at the rear are all located on the outside. The 315x1 at the front is close to the 315w1 at the front, causing coupling, which allows the 315f antenna to operate in the 2.4G frequency band.

[0366] As shown in Figures 117, 112, and 115, in implementation form 2, the antenna 315f may be positioned on the inner wall of the earphone rear housing 315a. Both the tip 315x1 and tip 315w1 may be located on the inner surface of the circumferential side wall 315i of the earphone rear housing 315a. Both the tail end 315x2 and tail end 315w2 may be located on the inner surface of the bottom wall 315h of the earphone rear housing 315a, and may be close to the circumferential side wall 315i. Unlike the implementation form 1, the second segment 315x4 of the first antenna branch section 315x may extend from the tip 315x1 to the tail end 315x2, roughly in the direction from the bottom wall 315h to the peripheral side wall 315i, and the fourth segment 315w4 of the second antenna branch section 315w may also extend from the tip 315w1 to the tail end 315w2, roughly in the direction from the bottom wall 315h to the peripheral side wall 315i.

[0367] Implementation form 2 provides an alternative topological structure for the antenna 315f in order to satisfy the antenna design requirements of the first earphone 31.

[0368] As shown in Figure 118, in the implementation configuration 3 of this embodiment, the antenna 315f may include a first antenna branch 315u and a second antenna branch 315v. The first antenna branch 315u and the second antenna branch 315v may each have a roughly curved, elongated strip-like structure.

[0369] As shown in Figure 118, the first antenna branch 315u may include a first segment 315u3 and a second segment 315u4, which are bent and connected. For example, the first segment 315u3 and the second segment 315u4 may be approximately perpendicular to each other. The end of the first segment 315u3 away from the second segment 315u4 is called the tip 315u1, and the end of the second segment 315u4 away from the first segment 315u3 is called the tail end 315u2. In other words, the tip 315u1 and the tail end 315u2 are two opposing ends of the first antenna branch 315u, respectively. The first segment 315u3 may be approximately straight, and the second segment 315u4 may be bent.

[0370] As shown in Figure 118, similarly, the second antenna branch 315v may include a third segment 315v3 and a fourth segment 315v4, which are bent and connected. For example, the third segment 315v3 and the fourth segment 315v4 may be approximately perpendicular to each other. The end of the third segment 315v3 away from the fourth segment 315v4 is called the tip 315v1, and the end of the fourth segment 315v4 away from the third segment 315v3 is called the tail 315v2. In other words, the tip 315v1 and the tail 315v2 are two opposing ends of the second antenna branch 315v, respectively. The third segment 315v3 may be approximately straight, and the fourth segment 315v4 may be bent.

[0371] Unlike implementation form 1, in implementation form 3, for the entire region occupied by the first antenna branch 315u and the second antenna branch 315v, the first antenna branch 315u extends from its tip 315u1 to its tail 315u2, bending along an outward-to-inward path (for example, in the view of Figure 118, the first antenna branch 315u is bent clockwise), and the second antenna branch 315v extends from its tip 315v1 to its tail 315v2, bending along an outward-to-inward path (for example, in the view of Figure 118, the second antenna branch 315v is bent counterclockwise). The tip 315u1, tip 315v1, and tail 315v2 are all on the outside, while the tail 315u2 is on the inside. The tail end 315u2 is close to the tip end 315v1, causing coupling, which allows antenna 315f to operate in a 2.4G frequency band.

[0372] As shown in Figures 117, 112, and 115, in implementation form 3, the antenna 315f may be positioned on the inner wall of the earphone rear housing 315a. Both the tip 315u1 and tip 315v1 may be located on the inner surface of the circumferential side wall 315i of the earphone rear housing 315a. Both the tail end 315u2 and tail end 315v2 may be located on the inner surface of the bottom wall 315h of the earphone rear housing 315a, and the tail end 315v2 may be even closer to the circumferential side wall 315i. Unlike the implementation form 1, the second segment 315u4 of the first antenna branch section 315u may extend from the tip 315u1 to the tail end 315u2, approximately in the direction from the peripheral side wall 315i to the bottom wall 315h, and the fourth segment 315v4 of the second antenna branch section 315v may extend from the tip 315v1 to the tail end 315v2, approximately in the direction from the bottom wall 315h to the peripheral side wall 315i.

[0373] Implementation form 3 provides an alternative topological structure for the antenna 315f in order to satisfy the antenna design requirements of the first earphone 31.

[0374] The aforementioned implementation configurations schematically enumerate three topological structures and three coupling methods for antenna 315f. Embodiments of this application are not limited thereto. Other topological structures and coupling methods for antenna 315f may be designed alternatively based on product requirements. For example, from tip to tail, a second segment may extend approximately from the bottom wall 315h to the circumferential side wall 315i, and a fourth segment may extend approximately from the circumferential side wall 315i to the bottom wall 315h. The tip of the first antenna branch may be coupled to the tail of the second antenna branch, thereby allowing antenna 315f to operate in a specific frequency band.

[0375] The above describes the general topological structures of three types of antenna 315f. In this embodiment, it should be understood that the specific structure of antenna 315f may be designed based on product requirements and is not limited to the above description. Below, for the sake of clarity, the antenna 315f in implementation form 1 will be used as an example to explain the details of antenna 315f.

[0376] First main microphone mesh 315g

[0377] The first main microphone mesh 315g may be a substantially circular sheet and may include several material layers, such as an acoustic mesh and an adhesive layer. Referring to Figures 112 and 115, the first main microphone mesh 315g may be fixedly connected to the bottom wall 315h of the earphone rear housing 315a. For example, the adhesive layer within the first main microphone mesh 315g may be bonded to the bottom wall 315h. In addition, the first main microphone mesh 315g covers the sound-collecting through-hole 315c, and sound entering the sound-collecting through-hole 315c may pass through the first main microphone mesh 315g and enter the internal cavity of the earphone rear housing 315a.

[0378] Rear housing support 315d

[0379] As shown in Figures 112 and 119, the rear housing support 315d may be substantially cover-shaped. The rear housing support 315d may be provided with a through hole 315j.

[0380] Second main microphone mesh 315e

[0381] As shown in Figure 112, the second main microphone mesh 315e may be a substantially circular sheet and may include several material layers such as an acoustic mesh, foam, and adhesive layer. Referring to Figures 112 and 119, the second main microphone mesh 315e may be fixed to the side of the rear housing support 315d. For example, the adhesive layer within the second main microphone mesh 315e may be bonded to the side of the rear housing support 315d. In addition, the second main microphone mesh 315e covers the through-hole 315j, and sound entering the through-hole 315j may pass through the second main microphone mesh 315e.

[0382] Figure 120 is a cross-sectional view of the earphone rear housing assembly 315 of Figure 113, and Figure 120 may represent the assembly structure of the earphone rear housing assembly 315. As shown in Figure 120, the first main microphone mesh 315g can be fixed to the inner surface of the bottom wall 315h of the earphone rear housing 315a. Referring to Figures 120 and 114, the first main microphone mesh 315g covers the sound-collecting through-hole 315c (the sound-collecting through-hole 315c is not shown in Figure 120 due to its position in the cross-section in Figure 113). The rear housing support 315d is mounted inside the internal cavity of the earphone rear housing 315a, and there is a specific gap between the rear housing support 315d and each of the bottom wall 315h and the first main microphone mesh 315g. Therefore, the rear housing support 315d and the earphone rear housing 315a surround the wind noise prevention cavity 315k. The wind noise prevention through hole 315b is connected to the wind noise prevention cavity 315k.

[0383] As shown in Figure 120, the second main microphone mesh 315e is located in the internal cavity of the earphone rear housing 315a, and the second main microphone mesh 315e may be fixed to the side of the rear housing support 315d away from the bottom wall 315h, and the second main microphone mesh 315e covers the through hole 315j of the rear housing support 315d.

[0384] The structures of the earplug 311, earplug support assembly 316, first electrode 312, earphone front housing assembly 313, second electrode 314, and earphone rear housing assembly 315 of the first earphone 31 have been described in detail above. The overall assembly structure including each component will now be described.

[0385] Figure 121 is a schematic diagram of the cross-sectional structure of the first earphone 31. Some parts of the structure are not shown due to the selection of the cross-sectional location. Figure 122 is a partially enlarged schematic diagram at location A in Figure 121.

[0386] As shown in Figure 121, the first electrode 312 may coincide with the second portion 313b of the earphone front housing 313z. Referring to Figures 102 and 87, the conductive portion 312b of the first electrode 312 may extend through the through-hole 313d in the second portion 313b into the internal cavity of the earphone front housing 313z.

[0387] As shown in Figures 121 and 122, the earplug support 316b may coincide with a first portion 313a of the earphone front housing 313z. Referring to Figures 122 and 90, the second skirt edge 316w of the earplug support 316b may be joined to the mounting groove 313f of the first portion 313a via the fastening region 316z of the front vent acoustic mesh 316a. The support body 316u of the earplug support 316b may extend into the internal cavity of the earphone front housing 313z. In addition, as shown in Figure 122, the front vent 316x on the earplug support 316b may be close to the sound-receiving channel 313e on the earphone front housing 313z, with the blocking region 316y of the front vent acoustic mesh 316a located between the front vent 316x and the sound-receiving channel 313e.

[0388] As shown in Figure 122, the inner earplug cover 311a can be sleeved around the earplug support 316b. Referring to Figures 109 and 122, the slot 311g of the inner earplug cover 311a may coincide with the first skirt edge 316v of the earplug support 316b, and there may be a certain gap between the end of the inner earplug cover 311a where the sound-releasing through-hole 311d is provided and the speaker mesh 316c on the earplug support 316b. The second bump 311c on the inner earplug cover 311a contacts the second skirt edge 316w of the earplug support 316b, thereby creating a gap between the inner earplug cover 311a and the second skirt edge 316w, which can prevent the inner earplug cover 311a from blocking the front ventilation hole 316x near the second skirt edge 316w. It can be understood that the second bump 311c may be positioned alternately with the front ventilation opening 316x in order to prevent the second bump 311c from blocking the front ventilation opening 316x.

[0389] As shown in Figure 122, the outer earplug cover 311b may surround the inner earplug cover 311a, the lower end of the outer earplug cover 311b may surround the first portion 313a of the front earphone housing 313z, and the first bump 311f on the inner wall of the outer earplug cover 311b may also surround the first portion 313a. Designing the first bump 311f may increase the structural strength of the outer earplug cover 311b, thereby reducing the shaking or vibration of the outer earplug cover 311b when the user wears the first earphone 31, and thereby reducing the "stethoscope effect".

[0390] As shown in Figure 121, the second electrode 314 is connected to the third portion 313c of the front earphone housing 313z and the rear earphone housing 315a.

[0391] In this embodiment, the earplug support assembly 316, the earphone front housing assembly 313, the second electrode 314, and the earphone rear housing assembly 315 surround the internal cavity of the first earphone 31, and the electronic assembly 317 is housed in the internal cavity.

[0392] In this embodiment, after the first earphone 31 is positioned in a predetermined location in the third housing groove 231f, the first electrode 312 may contact the first charging spring 231e and the second electrode 314 may contact the second charging spring 231c within the third housing groove 231f, thereby allowing the host 2 to charge the first earphone 31. Because the first electrode 312 and the second electrode 314 have a 360-degree closed ring structure, regardless of the angle at which the first earphone 31 is positioned in the third housing groove 231f, the first electrode 312 will always contact the first charging spring 231e and the second electrode 314 will always contact the second charging spring 231c, ensuring that the host 2 charges the first earphone 31. This structure of the first electrode 312 and the second electrode 314 allows the user to freely position the first earphone 31 in the third housing groove 231f. This improves the user experience.

[0393] In another embodiment, it is readily apparent that one of the first and second electrodes has a 360-degree closed ring structure, while the other electrode is not 360 degrees closed and forms an open ring structure. Thus, assuming that the first earphone is rechargeable, it is also guaranteed that the first earphone can be randomly positioned within a specific angular range.

[0394] For example, in the case of the first earphone 41 shown in Figure 123, the first electrode 411 still has a 360-degree closed ring structure, but there may be two or more second electrodes 412, which may be spaced apart and distributed on the same circle. Each second electrode 412 may have an open ring structure. Alternatively, in another embodiment, there may be a single second electrode 412, which has an open ring structure with a notch. For example, the surrounding angle of the second electrode 412 may be 120 degrees, 180 degrees, 270 degrees, etc. (but less than 360 degrees).

[0395] Alternatively, in another embodiment, neither the first nor the second electrode is closed 360 degrees, and the first and second electrodes are each a single open ring structure with a notch. Alternatively, one of the first and second electrodes is a single open ring structure with a notch, and the other electrode number is at least two, and at least two electrodes are spaced apart and distributed on the same circle. Alternatively, there are at least two first electrodes and two second electrodes, and the first and second electrodes are spaced apart and distributed on the same circle. This design also ensures that the first earphone can be randomly positioned within a specific angular range, provided that the first earphone is rechargeable.

[0396] In this embodiment, the first electrode 312 is electrically connected to the first charging spring 231e, or the second electrode 314 is electrically connected to the second charging spring 231c, and the first electrode 312 or the second electrode 314 may be further configured to enable communication between the first earphone 31 and the host 2. Specifically, the first electrode 312 or the second electrode 314 may be further multiplexed as communication electrodes of the first earphone 31 to enable communication between the first earphone 31 and the host 2.

[0397] Unlike this embodiment, in another embodiment, as shown in Figure 124, the first earphone 51 may have a first electrode 511 and a second electrode 512, the first electrode 511 and the second electrode 512 may be dedicated to enabling the host to charge the first earphone 51. In addition, the first earphone 51 may further have a communication electrode 513, the communication electrode 513 dedicated to communication with the host. The first electrode 511, the second electrode 512 and the communication electrode 513 shown in Figure 124 each have a 360-degree closed ring structure, but it should be understood that this is just one example. In practice, the structure, number and distribution of the first electrode 511, the second electrode 512 and the communication electrode 513 can all be designed based on product requirements.

[0398] Electronic Assembly 317

[0399] Figures 125 and 126 show the schematic structure of the electronic assembly 317 according to this embodiment, respectively. It should be understood that the structure of the electronic assembly 317 described below is merely an example and does not limit the embodiments of this application.

[0400] As shown in Figures 125 and 126, the electronic assembly 317 may include a first earphone circuit board assembly 317e, a second earphone circuit board assembly 317g, a third earphone circuit board assembly 317h, a flexible circuit board 317j, a speaker 317a, a mounting detection plate 317b, a sub-microphone 317k, an earphone battery 317f, and a main microphone 317i.

[0401] First earphone circuit board assembly 317e, second earphone circuit board assembly 317g, and third earphone circuit board assembly 317h

[0402] The first earphone circuit board assembly 317e, the second earphone circuit board assembly 317g, and the third earphone circuit board assembly 317h are stacked sequentially and spaced apart, and these three are electrically connected via a flexible circuit board 317j. Each of the first earphone circuit board assembly 317e, the second earphone circuit board assembly 317g, and the third earphone circuit board assembly 317h may include a circuit board and circuits and components arranged on the circuit board.

[0403] For example, a wear detection sensor may be placed on the circuit board of the first earphone circuit board assembly 317e, and this wear detection sensor is configured to perform wear detection of the first earphone 31. The wear detection sensor may include at least one of the following: a gravity sensor (G-sensor), an inertial measurement unit (IMU) sensor, a bone conduction sensor, an infrared (IR) sensor, a voice accelerometer (VACC), a voice pickup unit (VPU), etc. A magnetic field sensor may be placed on the circuit board of the first earphone circuit board assembly 317e, and this magnetic field sensor is configured to detect changes in the magnetic flux of a host magnet to perform box-in and box-out detection of the first earphone 31 (the principle of box-in and box-out detection will be described later). The magnetic field sensor may be, for example, a Hall effect sensor or a magnetometer. For example, there may be two magnetic field sensors. For example, the circuit board of the second earphone circuit board assembly 317g may contain a charging circuit and a discharging circuit. For example, the circuit board of the third earphone circuit board assembly 317h may contain a radio frequency circuit.

[0404] Speaker 317a

[0405] As shown in Figure 126, speaker 317a may be electrically connected to the circuit board of the first earphone circuit board assembly 317e. Speaker 317a may be located on the side of the first earphone circuit board assembly 317e that is away from the second earphone circuit board assembly 317g.

[0406] Installation detection plate 317b

[0407] As shown in Figures 125 and 126, the wear detection plate 317b may include a connected plate 317c and a connecting pin 317d, the connecting pin 317d being derived from the plate 317c and electrically connected (e.g., soldered) to the circuit board of the first earphone circuit board assembly 317e. The plate 317c may be located on the same side of the first earphone circuit board assembly 317e as the speaker 317a. The wear detection plate 317b can conduct electricity and may be made of a material such as metal. Coupling capacitance may occur when the wear detection plate 317b is close to the human body. The coupling capacitance value changes as the distance between the wear detection plate 317b and the human body changes. Wear detection of the first earphone 31 may be achieved through the detection and processing of the coupling capacitance value of the wear detection plate 317b.

[0408] Sub-microphone 317k

[0409] As shown in Figures 125 and 126, the sub-microphone 317k may be positioned on the side of the first earphone circuit board assembly 317e away from the speaker 317a and electrically connected to the circuit board of the first earphone circuit board assembly 317e. The sub-microphone 317k may be positioned on the circuit board of the first earphone circuit board assembly 317e. A through-hole may be provided in the portion of the circuit board of the first earphone circuit board assembly 317e corresponding to the sub-microphone 317k, and sound can be picked up by the sub-microphone 317k through this through-hole. The sub-microphone 317k may be configured to achieve noise reduction and may be further configured to perform wear detection.

[0410] Earphone Battery 317f

[0411] As shown in Figures 125 and 126, the earphone battery 317f may be located between the first earphone circuit board assembly 317e and the second earphone circuit board assembly 317g. The electrode pins of the earphone battery 317f may be electrically connected to the circuit board of the first earphone circuit board assembly 317e.

[0412] Main microphone 317i

[0413] As shown in Figures 125 and 126, the main microphone 317i may be located between the second earphone circuit board assembly 317g and the third earphone circuit board assembly 317h, and may be electrically connected to the circuit board of the third earphone circuit board assembly 317h. The main microphone 317i may be placed on the circuit board of the third earphone circuit board assembly 317h. A through-hole may be provided on the circuit board of the third earphone circuit board assembly 317h at a position corresponding to the main microphone 317i, and human voice can be picked up by the main microphone 317i through this through-hole.

[0414] Figure 127 shows an assembly structure including the electronic assembly 317 and another component of the first earphone 31. Figure 128 is a partially enlarged schematic view at position A in Figure 127, and Figure 129 is a partially enlarged schematic view at position B in Figure 127.

[0415] As shown in Figure 127, the electronic assembly 317 can be housed in an internal cavity surrounded by the earplug support assembly 316, the earphone front housing assembly 313, the second electrode 314, and the earphone rear housing assembly 315.

[0416] As shown in Figure 128, at least a portion of the speaker 317a may be located in the internal cavity of the earplug support 316b. Sound waves emitted from the speaker 317a pass through the speaker mesh 316c and the sound-emitting through-hole 311d and enter the ear canal. The front vent 316x ensures that the atmospheric pressure inside the internal cavity of the earplug support 316b is in equilibrium with the external atmospheric pressure, allowing the speaker 317a to operate normally. In addition, the front vent 316x can also improve the noise reduction depth of the secondary microphone 317k.

[0417] For example, as shown in Figure 128, the plate 317c of the fitting detection plate 317b is fixedly connected (e.g., soldered) to the end of the earplug support 316b away from the speaker mesh 316c, and the fitting detection plate 317b and the earplug support 316b are connected, forming a large-area conductor. Thus, both the fitting detection plate 317b and the earplug support 316b can generate coupling capacitance, thereby allowing the fitting detection plate 317b and the earplug support 316b to be used for fitting detection. In other words, in addition to providing support and accommodation functions, the earplug support 316b can further be reused as a detection plate for fitting detection.

[0418] Based on product requirements, the assembly structure including the wear detection plate and the earplug support may alternatively take on a different form and is not limited to the above description. For example, if only a portion of the earplug support is made of a conductive material, the wear detection plate may be fixedly connected to that portion of the earplug support, and the assembly structure including the wear detection plate and the earplug support may be designed based on the respective structures of the wear detection plate and the earplug support and the internal space of the first earphone.

[0419] In this embodiment, by using the fitting detection plate 317b and the earplug support 316b together as a detection plate for fitting detection, the area of ​​the detection plate can be increased, ensuring consistency and reliability of fitting detection. Since the earplug support 316b is closer to the inside of the ear canal than the fitting detection plate 317b, the capacitance detection data from the earplug support 316b is more accurate and reliable. This helps to improve the overall reliability of fitting detection. In addition, when the earplug support 316b is reused as a detection plate used for fitting detection, the overall size of the first earphone 31 is not affected, and the stacking space within the first earphone 31 can be further reduced.

[0420] In addition, if the earplug support 316b is manufactured using a high-strength material such as metal, the thickness and overall structural dimensions of the earplug support 316b may be small, provided that the structural strength of the earplug support 316b meets the requirements. This allows the outer earplug cover 311b to have sufficient compression deformation space, thereby ensuring user comfort during wear.

[0421] In this embodiment, for example, wear detection can be performed by using a wear detection sensor, a wear detection plate 317b, and an earplug support 316b in combination. This design can significantly improve the consistency and reliability of wear detection and reduce the probability of false detections.

[0422] In another embodiment, depending on product requirements, wear detection may be performed using one or any two of the wear detection sensor, wear detection plate 317b, and earplug support 316b.

[0423] As shown in Figure 128, the first earphone circuit board assembly 317e may be located in the earphone front housing 313z. Referring to Figures 102, 87, 88, and 128, the conductive portion 312b of the first electrode 312 may pass through the through hole 313d in the earphone front housing 313z and be electrically connected (e.g., soldered) to the circuit board of the first earphone circuit board assembly 317e, thereby allowing the first electrode 312 to be used as a charging electrode.

[0424] As shown in Figure 128, the side of the circuit board of the first earphone circuit board assembly 317e can be fitted with a noise reduction microphone mesh 313j. A secondary microphone 317k is positioned on the opposite side of the circuit board and may correspond to the noise reduction microphone mesh 313j. Noise in the ear canal passes sequentially through the speaker mesh 316c, the sound pickup channel 313e, the noise reduction microphone mesh 313j, and the through-hole on the circuit board of the first earphone circuit board assembly 317e corresponding to the secondary microphone 317k, and can be picked up by the secondary microphone 317k. The speaker 317a can generate a phase-inverted signal that is out of phase with the noise signal, and the phase-inverted signal can cancel the noise signal. In this way, the first earphone 31 can achieve active noise reduction.

[0425] When the first earphone 31 is operating, the sound from the speaker 317a and noise in the ear canal may pass through the front vent acoustic mesh 316a and leak to the outside through the front vent 316x. In this way, the pressure inside and outside the ear canal can be balanced, improving the user's wearing comfort. Alternatively, the front vent acoustic mesh 316a that blocks the front vent 316x may be removed. In this case, the front vent 316x may be made smaller. For example, the diameter of the front vent 316x may be less than 0.22 mm.

[0426] In addition, the sub-microphone 317k can also be used for wear detection, in principle by having speaker 317a transmit a sound wave signal of a specific frequency. If the user is not wearing the first earphone 31, a large amount of sound wave signal may leak to the outside through the front vent 316x, and the signal strength of the sound wave signal picked up by the sub-microphone 317k will be low. If the user is wearing the first earphone 31, the front vent 316x will be blocked to some extent or completely, so the sub-microphone 317k can pick up more sound wave signal, and the signal strength of the sound wave signal picked up by the sub-microphone 317k will be high. Therefore, whether or not the user is wearing the first earphone 31 can be determined by detecting the signal strength of the signal picked up by the sub-microphone 317k.

[0427] As shown in Figure 129, the second earphone circuit board assembly 317g may be located inside the second electrode 314. Referring to Figures 111 and 129, the conductive portion 314c of the second electrode 314 may be electrically connected (e.g., soldered) to the circuit board of the second earphone circuit board assembly 317g, thereby the second electrode 314 being used as a charging electrode.

[0428] As shown in Figure 129, the third earphone circuit board assembly 317h may be supported on the rear housing support 315d. Referring to Figures 129 and 120, the side of the third earphone circuit board assembly 317h away from the main microphone 317i may be attached to the second main microphone mesh 315e. The main microphone 317i may correspond to the second main microphone mesh 315e. Voice emitted from the user passes sequentially through the sound-collecting through-hole 315c, the first main microphone mesh 315g, the through-hole 315j on the rear housing support 315d, the second main microphone mesh 315e, and the through-hole on the circuit board of the third earphone circuit board assembly 317h corresponding to the main microphone 317i, and can be picked up by the main microphone 317i.

[0429] Referring to Figures 129 and 120, the external airflow may enter the wind noise prevention cavity 315k through one wind noise prevention through-hole 315b and then exit the wind noise prevention cavity 315k through another wind noise prevention through-hole 315b. In this way, wind noise caused by the external airflow can be reduced or prevented from being picked up by the main microphone 317i.

[0430] Referring to Figures 116 and 129, the tips 315z1 and 315y1 of antenna 315f are connected, for example, by soldering, to the feed points on the circuit board of the third earphone circuit board assembly 317h. The two feed points may be symmetrical with respect to the center line of the first earphone 31. This allows antenna 315f to radiate and receive signals.

[0431] Features and functions of wearable device 1

[0432] In this embodiment, since the wearable device 1 includes a host 2 and earphones, the wearable device 1 may have the following features and functions. Some of the features or functions that both the host 2 and the earphones have are exactly the same for the first earphone (e.g., first earphone 31, first earphone 41, first earphone 51) and the second earphone, so for the sake of brevity, the first earphone 31 will be used as the main example to explain.

[0433] 1. When host 2 is opened, the first earphone 31 is attached to the first part 21 of host 2.

[0434] Referring to Figures 1 and 4, in this embodiment, when the host 2 is in a closed state, the first earphone 31 is housed in the space enclosed by the first housing groove 213y of the first portion 21 and the third housing groove 231f of the second portion 23.

[0435] Figure 130 shows a side view of the positional relationship between the first host mounting magnet 213r2 of the first part 21, the second host mounting magnet 231v of the second part 23, and the earphone magnet 313g of the first earphone 31 when the host 2 is in a closed state. As shown in Figure 130, the first host mounting magnet 213r2 and the second host mounting magnet 231v each magnetically attract the earphone magnet 313g.

[0436] In this embodiment, the magnetic field of the first host mounting magnet 213r2 is strong, and the magnetic attraction force between the first host mounting magnet 213r2 and the earphone magnet 313g is large. The magnetic field of the second host mounting magnet 231v is weak, and the magnetic attraction force between the second host mounting magnet 231v and the earphone magnet 313g is small. Please refer to Figures 1 to 4. As the host 2 gradually opens from a closed state, the magnetic attraction force of the first host mounting magnet 213r2 is greater than that of the second host mounting magnet 231v, so the first earphone 31 is attached to the first part 21 and rotates with the first part 21 relative to the second part 23.

[0437] In this embodiment, an appropriate magnet design can be implemented to obtain a strong magnetic attraction between the first host mounting magnet 213r2 and the earphone magnet 313g.

[0438] As shown in Figure 131, in the first implementation configuration of this embodiment, each first host mounting magnet 213r2 is a Halbach array formed by joining two single magnets, and the magnetic field directions of the two single magnets (represented by arrows pointing from N to S) are different, so that each first host mounting magnet 213r2 has two magnetic field directions. Referring to Figures 131 and 130, in each first host mounting magnet 213r2, the magnetic field direction of one single magnet (for example, the upper single magnet in Figure 131) points approximately from the radially outside to the radially inside of the first earphone 31, and the magnetic field direction of the other single magnet (for example, the lower single magnet in Figure 131) points approximately from the radially inside to the radially outside of the first earphone 31.

[0439] As shown in Figure 131, each earphone magnet 313g may be a Halbach array formed by a single magnet, and different parts of each earphone magnet 313g may have different magnetic field directions. Referring to Figures 131 and 130, schematically, the magnetic field direction of part Q1 of each earphone magnet 313g points approximately from the radially outside to the radially inside of the first earphone 31, and the magnetic field direction of the other part Q2 points approximately from the radially inside to the radially outside of the first earphone 31. The design in which each earphone magnet 313g is a single magnet can reduce the difficulty of assembling the earphone magnets 313g. In an alternative implementation, each earphone magnet 313g may be formed by joining multiple (e.g., two) single magnets.

[0440] The design of the first host mounting magnet 213r2 and the earphone magnet 313g allows the first host mounting magnet 213r2 to magnetically attract the earphone magnet 313g. In addition, product verification has shown that this design makes it possible to increase the magnetic attraction force between the first host mounting magnet 213r2 and the earphone magnet 313g.

[0441] Unlike implementation form 1, in implementation form 2 of this embodiment, as shown in Figure 132, each first host mounting magnet 213r2 is a Halbach array having four magnetic field directions. Each first host mounting magnet 213r2 may be formed by joining four single magnets, or it may be a single magnet having four magnetic field directions. The magnet design in implementation form 2 can satisfy the design requirement that the first earphone 31 magnetically attracts the first part 21.

[0442] Unlike implementation configuration 1, as shown in Figure 133, in implementation configuration 3 of this embodiment, each first host mounting magnet 213r2 is a single magnet having a single magnetic field direction. For example, the magnetic field direction of each first host mounting magnet 213r2 may point approximately from the radially inside to the radially outside of the first earphone 31. Each earphone magnet 313g is a single magnet having a single magnetic field direction. For example, the magnetic field direction of each earphone magnet 313g may point approximately from the radially inside to the radially outside of the first earphone 31. The magnet design in implementation configuration 3 can satisfy the design requirement that the first earphone 31 magnetically attracts the first part 21.

[0443] Unlike the implementation configuration 1, in implementation configuration 4 of this embodiment, as shown in Figure 134, each first host mounting magnet 213r2 is a Halbach array having three magnetic field directions. Each first host mounting magnet 213r2 may be formed by joining three single magnets, or it may be a single magnet having three magnetic field directions. Each earphone magnet 313g may have a single magnetic field direction. In addition, the first electrode 312 and the second electrode 314 may be manufactured using a material that can be magnetically attracted to the first host mounting magnet 213r2, for example, a magnetic conductive material (e.g., SPCC (steel plate cold common, SPCC) or SUS430). Both the first electrode 312 and the second electrode 314 can magnetically attract the first host mounting magnet 213r2. The magnet design in implementation form 4 not only satisfies the design requirement that the first earphone 31 magnetically attracts the first part 21, but also has a simple design structure, is easy to manufacture, and is low-cost.

[0444] Alternatively, unlike in implementation form 5, the first earphone 31 does not need to have a magnet for the earphone built in. The first electrode 312 and the second electrode 314 can be manufactured using a material that can be magnetically attracted by the first host mounting magnet 213r2, for example, a magnetoconductive material (e.g., SPCC or SUS430). As shown in Figure 135, both the first electrode 312 and the second electrode 314 can magnetically attract the first host mounting magnet 213r2. In implementation form 5, the first host mounting magnet 213r2 can be flexibly designed based on requirements and may have a single magnetic field direction or multiple magnetic field directions. The magnet design of implementation form 5 not only satisfies the design requirement that the first earphone 31 magnetically attracts the first part 21, but also has a simple design structure, is easy to manufacture, and is low cost.

[0445] In this embodiment, as shown in Figure 136, the radial dimension of the first earphone 31 can be more than twice the groove depth of the first housing groove 213y, so that most of the first earphone 31 is exposed outside the first housing groove 213y. This design is convenient for the user to directly remove the first earphone 31 from the first part 21 after opening the host 2.

[0446] In the aforementioned implementation, the magnet design for the first host mounting magnet 213r2 and the earphone magnet 313g was described. In practice, provided that the magnetic field strength of the second host mounting magnet 231v is smaller than that of the first host mounting magnet 213r2, the magnet design for the second host mounting magnet 231v and the earphone magnet 313g can also be performed by referring to the aforementioned principle.

[0447] From the above description, it is understood that, based on product requirements, in another embodiment, the magnetic field strength of the first host mounting magnet 213r2 may alternatively be less than that of the second host mounting magnet 231v, so that after the host 2 is opened, the first earphone 31 is not attracted to the first part 21 but remains housed in the second part 23. Alternatively, the first housing groove may not be provided in the first part of the host, and the first earphone may be attached to the first part after the host is opened.

[0448] 2. When the first earphone 31 is placed on the first part 21, the first earphone 31 is automatically positioned in the predetermined location.

[0449] As shown in Figures 137, 138, and 139, after the host 2 is opened and the first earphone 31 is removed from the host 2, the user can pick up the first earphone 31 and position it so that it substantially aligns with the first housing groove 213y (specifically, the earplug 311 of the first earphone 31 substantially faces the end of the first housing groove 213y configured to house the earplug 311, the earphone rear housing assembly 315 of the first earphone 31 substantially faces the end of the first housing groove 213y configured to house the earphone rear housing assembly 315, and the first earphone 31 rotates at any angle about the center line of the first housing groove 213y), and then bring the first earphone 31 closer to the first housing groove 213y. The magnetic attraction force of the first host mounting magnet 213r2 in the first part 21 acts on the earphone magnet 313g of the first earphone 31, correcting the first earphone 31 to a position that aligns with the first housing groove 213y, and automatically attracting it to the first housing groove 213y, thereby allowing the first earphone 31 to be accurately and appropriately positioned in the first housing groove 213y.

[0450] According to the automatic in-position design in this embodiment, the user can easily place the first earphone 31 on the host 2 and complete this placement without performing precise alignment, thereby improving the user experience.

[0451] 3. When the first earphone 31 is placed within the second part 23, the first earphone 31 becomes difficult to separate from the second part 23.

[0452] When the user places the first earphone 31 into the third housing groove 231f of the second part 23, the first earphone 31 is attracted to the third housing groove 231f by the magnetic attraction force of the second host mounting magnet 231v in the second part 23 on the earphone magnet 313g of the first earphone 31. Even if the host 2 is turned upside down, the first earphone 31 will not come out of the third housing groove 231f.

[0453] In addition, both the second charging spring 231c and the first charging spring 231e within the third housing groove 231f can apply a specific extrusion pressure to the first earphone 31, and this extrusion pressure can increase the friction between the first earphone 31 and the second host housing 231 within the second portion 23, thereby making it less likely for the first earphone 31 to come out of the third housing groove 231f.

[0454] 4. The first earphone 31 may be positioned at random angles within the housing groove.

[0455] In this embodiment, the first earphone 31 can overlap with the first earphone 31 each time the first earphone 31 rotates by a specific angle around its centerline. Therefore, the rotated first earphone 31 can always be accurately accommodated in the first housing groove 213y or the third housing groove 231f and can fit against the inner wall of the first housing groove 213y or the third housing groove 231f. This allows the user to position the first earphone 31 in the first housing groove 213y or the third housing groove 231f without having to hold the first earphone 31 at a fixed angle.

[0456] For example, in the case of the first earphone 31, which is approximately octahedron-shaped, each time the first earphone 31 is rotated 90° around its centerline, the first earphone 31 can overlap itself. Even if the user rotates the first earphone 31 by 90°, 180°, 270°, etc., the first earphone 31 can still fit into the inner wall of the first housing groove 213y or the third housing groove 231f. Therefore, the first earphone 31 can be smoothly and accurately positioned in the first housing groove 213y or the third housing groove 231f. In addition, as shown in Figures 137 to 139, when the first earphone 31 is placed in the first housing groove 213y, the magnetic force of the first host mounting magnet 213r2 has an angle correction function. Therefore, even if the user rotates the first earphone 31 randomly (for example, by 10°, 35°, or 55°), the magnetic force of the first host mounting magnet 213r2 can correct the angle of the first earphone 31 to its normal angle. As a result, the first earphone 31 can be smoothly and accurately positioned in the first housing groove 213y and fit into the inner wall of the first housing groove 213y.

[0457] For example, in the case of a first earphone 31 that is substantially cylindrical, the first earphone 31 can still overlap with itself even after being rotated at any angle around its centerline. Therefore, no matter how much the user rotates the first earphone 31, the first earphone 31 can still fit into the inner wall of the first or third housing groove. In this way, the first earphone 31 can be smoothly and accurately positioned in the first or third housing groove.

[0458] 5. Detection of the open / closed state of host 2

[0459] As shown in Figure 140, the first part 21 of the host 2 has a magnetic field sensor 212g (sometimes called the first magnetic field sensor), which may be located, for example, on a circuit board 212a within the first part 21. The magnetic field sensor 212g is configured to detect the magnetic flux of a state-sensing magnet 231x in the second part 23 of the host 2. The magnetic flux of the state-sensing magnet 231x detected by the magnetic field sensor 212g may be directly proportional to the distance between the magnetic field sensor 212g and the state-sensing magnet 231x. When the host 2 is in a closed state, the magnetic flux detected by the magnetic field sensor 212g is maximum. When the host 2 is fully open, the magnetic flux detected by the magnetic field sensor 212g is minimum.

[0460] In this embodiment, the magnetic field sensor 212g may be, for example, a Hall effect sensor or a magnetometer. The Hall effect sensor can detect changes in magnetic flux. When the Hall effect sensor detects that the magnetic flux exceeds a hardware threshold of the Hall effect sensor, the Hall effect sensor can generate a corresponding signal and report that signal to the processor of the host 2. The processor of the host 2 can perform corresponding processing based on the signal from the Hall effect sensor. Unlike the Hall effect sensor, the magnetometer can detect the value of the magnetic flux and report that value to the processor of the host 2. The processor of the host 2 can determine whether the magnetic flux detected by the magnetometer exceeds a software threshold built into the processor and perform corresponding processing based on that determination. The following description uses an example in which the magnetic field sensor 212g is a Hall effect sensor.

[0461] As shown in Figure 140, after the user presses the cap 251, the host 2 gradually opens from the closed state, the distance between the magnetic field sensor 212g and the state detection magnet 231x gradually increases, and the magnetic flux of the state detection magnet 231x detected by the magnetic field sensor 212g tends to decrease. When the magnetic flux detected by the magnetic field sensor 212g falls below a first threshold, a first signal may be generated. Based on the first signal, the processor of the host 2 determines that the host 2 is in the open state.

[0462] Conversely, as host 2 gradually closes from an open state, the distance between the magnetic field sensor 212g and the state detection magnet 231x gradually decreases, and the magnetic flux of the state detection magnet 231x detected by the magnetic field sensor 212g tends to increase. When the magnetic flux detected by the magnetic field sensor 212g exceeds a second threshold, a second signal may be generated. Based on the second signal, the host 2 processor determines that host 2 is in a closed state.

[0463] In this embodiment, when the processor of host 2 determines that host 2 is in an open state, the processor controls the display 211 to display the corresponding interface.

[0464] In this embodiment, when the host 2 is in an open state and it is determined that the first earphone 31 is in the third housing groove 231f (a method for detecting whether the first earphone 31 is in the third housing groove 231f will be described below), the communication electrodes of the host 2 may transmit a signal to the communication electrodes of the first earphone 31 to wake up the first earphone 31. When the host 2 is in a closed state and it is determined that the first earphone 31 is inside the host 2, the host 2 may start foreign object detection and, after determining that no foreign object has entered, may start charging the first earphone 31. In another embodiment, the positions of the magnetic field sensor 212g and the state detection magnet 231x may be swapped. Specifically, the magnetic field sensor 212g may be in the second part 23 and the state detection magnet 231x may be in the first part 21.

[0465] 6. Detection of the box-in / out-of-box status of the first earphone 31

[0466] The box-in / out-of-box state of the first earphone 31 refers to the relative positional relationship between the first earphone 31 and the first housing groove 213y and the relative positional relationship between the first earphone 31 and the third housing groove 231f, and includes multiple positional states such as the state in which the first earphone 31 is inside the first housing groove 213y and the third housing groove 231f (the host 2 is closed and the first earphone 31 is inside the host 2), the state in which the first earphone 31 is located outside the first housing groove 213y and the third housing groove 231f (the host 2 is open and the first earphone 31 is attached to the first part 21), or the state in which the first earphone 31 is located inside the third housing groove 231f and outside the first housing groove 213y (the host 2 is open and the first earphone 31 is attached to the second part 23).

[0467] In this embodiment, both the host 2 and the first earphone 31 can detect whether the first earphone 31 is inside or outside the box. This will be explained in detail below.

[0468] (1) Host 2 detects whether the first earphone 31 is inside or outside the box.

[0469] As shown in Figure 141, the second portion 23 of the host 2 has magnetic field sensors 237 and 238 (both sometimes referred to as second magnetic field sensors and shown in dashed boxes). Magnetic field sensor 237 may be close to the outer surface of the groove wall of the third housing groove 231f, and magnetic field sensor 238 may be close to the outer surface of the groove wall of the fourth housing groove 231g. Magnetic field sensors 237 and 238 may each be, for example, a single-axis Hall effect sensor or a magnetometer. The following description will use an example in which magnetic field sensors 237 and 238 are each Hall effect sensors.

[0470] The magnetic field sensor 237 is configured to detect changes in the magnetic flux of the earphone magnet 313g of the first earphone 31. The magnetic flux of the earphone magnet 313g detected by the magnetic field sensor 237 may be directly proportional to the distance between the magnetic field sensor 237 and the earphone magnet 313g. When the first earphone 31 is located in the third housing groove 231f (when the host 2 is closed and the first earphone 31 is inside the host 2, or when the host 2 is open and the first earphone 31 is attached to the second part 23), the magnetic flux detected by the magnetic field sensor 237 is large. When the first earphone 31 is attached to the first part 21 away from the third housing groove 231f, the magnetic flux detected by the magnetic field sensor 237 is small.

[0471] In this embodiment, a third signal may be generated when the magnetic flux detected by the magnetic field sensor 237 is greater than or equal to a third threshold. Based on the third signal, the processor of the host 2 determines that the first earphone 31 is positioned in the third housing groove 231f.

[0472] In this embodiment, the processor of host 2 can determine the in / outside state of the first earphone 31 by combining a third signal transmitted by the magnetic field sensor 237 with a first or second signal transmitted by the magnetic field sensor 212g. For example, when the processor receives the third signal and the first signal, the processor determines that host 2 is open and the first earphone 31 is attached to the second part 23. When the processor receives the third signal and the second signal, the processor determines that host 2 is closed and the first earphone 31 is inside host 2.

[0473] A fourth signal may be generated when the magnetic flux detected by the magnetic field sensor 237 is below the third threshold but above the fourth threshold. Based on the fourth signal, the processor of host 2 determines that the first earphone 31 is mounted on the first part 21 away from the third housing groove 231f (Figure 141).

[0474] Similarly, the magnetic field sensor 238 is configured to detect changes in the magnetic flux of the earphone magnet of the second earphone 32. As described above, the host 2 can determine the in / out of the box state of the second earphone 32 using the signal transmitted by the magnetic field sensor 238, or by combining the signals transmitted by the magnetic field sensor 238 and the magnetic field sensor 212g.

[0475] In short, it is easy to understand that the magnetic field sensor 237 located in the second section 23 is configured to determine whether the first earphone 31 is inside or outside the third housing groove 231f. Similarly, the magnetic field sensor 238 located in the second section 23 is configured to detect whether the second earphone 32 is inside or outside the fourth housing groove 231g.

[0476] In another embodiment, at least one of the magnetic field sensors 237 and 238 may be alternatively located in the first part 21 of the host 2. For example, the magnetic field sensor 237 may be located in the first part 21 (for example, close to the outer surface of the groove wall of the first housing groove 213y). Changes in the magnetic flux of the earphone magnet 313g of the first earphone 31 can be detected via the magnetic field sensor 237, and it can be determined whether the first earphone 31 is inside or outside the first housing groove 213y. The specific principle is the same as described above. A detailed explanation is omitted here.

[0477] In this embodiment, when the host 2 determines that the first earphone 31 is in the third housing groove 231f and the host 2 is in an open state, the communication electrodes of the host 2 may transmit a signal to the communication electrodes of the first earphone 31 to wake up the first earphone 31. The host 2 may further charge the first earphone 31 via the first charging spring 231e and the second charging spring 231c. In addition, the host 2 may further activate a charging overheat protection mechanism (described below). Depending on product requirements, it may be necessary to charge the first earphone 31 and to activate the charging overheat protection mechanism.

[0478] In this embodiment, when the host 2 determines that the first earphone 31 is inside the host 2 and that the host 2 is in a closed state, the host 2 may activate the foreign object detection mechanism (described below), further charge the first earphone 31, and activate the charging overheat protection mechanism. Depending on the product requirements, it may be necessary to either not charge the first earphone 31 or not activate the charging overheat protection mechanism.

[0479] In another embodiment, when host 2 determines that the first earphone 31 is in the first housing groove 213y and that host 2 is in an open state, the first earphone 31 is woken up (the principle will be described later).

[0480] (2) The first earphone 31 detects whether it is inside or outside the box.

[0481] As shown in Figure 142, the first earphone 31 may have a magnetic field sensor 317z (sometimes called the third magnetic field sensor, represented by a dashed box), which may be located, for example, on the circuit board of the third earphone circuit board assembly 317h. The magnetic field sensor 317z may be, for example, a Hall effect sensor or a magnetometer. The following explanation will use an example where the magnetic field sensor 317z is a Hall effect sensor.

[0482] The magnetic field sensor 317z is configured to detect changes in the magnetic flux of the state detection magnet 231x in the second part 23 of the host 2. The magnetic flux of the state detection magnet 231x detected by the magnetic field sensor 317z is directly proportional to the distance between the magnetic field sensor 317z and the state detection magnet 231x. When the first earphone 31 is located in the third housing groove 231f (which may be when the host 2 is closed and the first earphone 31 is inside the host 2, or when the host 2 is open and the first earphone 31 is attached to the second part 23), the magnetic flux detected by the magnetic field sensor 317z is large. When the first earphone 31 is moved away from the third housing groove 231f and attached to the first part 21, the magnetic flux detected by the magnetic field sensor 317z is small.

[0483] In this embodiment, a sixth signal may be generated if the magnetic flux detected by the magnetic field sensor 317z is greater than or equal to a fifth threshold. Based on the sixth signal, the control unit of the first earphone 31 determines that the first earphone 31 is positioned in the third housing groove 231f.

[0484] In this embodiment, the control unit of the first earphone 31 (which may be a central processing unit or a microcontroller unit (MCU)) can determine the in / out-of-box state of the first earphone 31 by combining a sixth signal transmitted by the magnetic field sensor 317z with a first or second signal transmitted by the magnetic field sensor 212g (the first and second signals may be transmitted via the communication electrodes of the host 2 and the communication electrodes of the first earphone 31). For example, when the control unit receives the sixth signal and the first signal, it determines that the host 2 is open and the first earphone 31 is attached to the second part 23. When the control unit receives the sixth signal and the second signal, it determines that the host 2 is closed and the first earphone 31 is inside the host 2.

[0485] If the magnetic flux detected by the magnetic field sensor 317z is below the fifth threshold but above the sixth threshold, a seventh signal may be generated. Based on the seventh signal, the control unit of the first earphone 31 determines that the first earphone 31 is mounted on the first part 21 away from the third housing groove 231f.

[0486] As shown in Figure 142, the second earphone 32 may also have a magnetic field sensor 327z (represented by a dashed box), which is configured to detect changes in the magnetic flux of the magnet 231w within the second section 23. The magnetic field sensor 327z may be, for example, a uniaxial Hall effect sensor. As described above, the in / out of the box state of the second earphone 32 can be determined using the signal transmitted by the magnetic field sensor 327z, or by combining the signals transmitted by the magnetic field sensor 327z and the magnetic field sensor 212g.

[0487] In this embodiment, the first earphone 31 detects whether it is inside or outside the box, and as a result, the first earphone 31 performs the corresponding operation.

[0488] If host 2 is in a closed state and the first earphone 31 detects that it is positioned in the third housing groove 231f, the first earphone 31 may be in a sleep state.

[0489] When the host 2 is in an open state and the first earphone 31 detects that it is positioned in the third housing groove 231f, the first earphone 31 can be woken up by the host 2. For example, the communication electrode of the host 2 can send a signal to the communication electrode of the first earphone 31 to wake up the first earphone 31.

[0490] When the first earphone 31 detects that the host 2 is open and that the first earphone 31 is attached to the first part 21, the detection signal from the magnetic field sensor 317z activates the control unit of the first earphone 31, waking up the first earphone 31.

[0491] In this embodiment, both the host 2 and the first earphone 31 can detect the in-box / out-of-box state of the first earphone 31. This avoids the risks that would arise if detection were performed by only the host 2 or only the first earphone 31 (for example, if detection is performed only by the host 2, the in-box / out-of-box state of the first earphone 31 cannot be accurately detected if the host 2 is powered off), and ensures the reliability of detecting the in-box / out-of-box state of the first earphone 31.

[0492] 7. Foreign object detection mechanism

[0493] In this embodiment, if foreign matter (e.g., liquid, solid, or semi-solid contaminants) enters the third housing groove 231f of the host 2, the surfaces of the host 2 and the first earphone 31 may become contaminated, corroded, rusted, or even malfunction, thereby potentially affecting the reliability and lifespan of the product. In particular, if the second charging spring 231c and the first charging spring 231e in the third housing groove 231f come into contact with a large amount of foreign matter, it may cause a charging malfunction (or communication malfunction).

[0494] Taking this into consideration, as shown in Figure 143, the foreign object detection spring 231d is further positioned in the third housing groove 231f and configured to perform foreign object detection. The detection principle is as follows.

[0495] When at least one of the foreign object detection spring 231d, the first charging spring 231e, or the second charging spring 231c comes into contact with a foreign object, the waveform of the charging signal of host 2 changes. For example, after the foreign object detection spring 231d and the first charging spring 231e come into contact with a foreign object, or after the foreign object detection spring 231d and the second charging spring 231c come into contact with a foreign object, or after the foreign object detection spring 231d, the first charging spring 231e, and the second charging spring 231c come into contact with a foreign object, the waveform of the charging signal of host 2 changes. A charging signal whose waveform changes in this way is sometimes called an abnormal charging signal. If only at least one of the first charging spring 231e and the second charging spring 231c comes into contact with a foreign object, the waveform of the charging signal of host 2 does not change. A charging signal whose waveform does not change in this way is sometimes called a normal charging signal.

[0496] If only one of the first charging spring 231e, the second charging spring 231c, and the foreign object detection spring 231d makes contact with the foreign object, or if none of the first charging spring 231e, the second charging spring 231c, or the foreign object detection spring 231d make contact with the foreign object, the waveform of the charging signal of the host 2 does not change. In other words, the charging circuit generates a normal charging signal.

[0497] Therefore, the processor of host 2 can determine whether foreign matter has entered the third housing groove 231f based on the type of charging signal. For example, if the charging signal is determined to be an abnormal charging signal, the processor will determine that foreign matter has entered the third housing groove 231f. Conversely, if the charging signal is determined to be a normal charging signal, the processor will determine that no foreign matter has entered the third housing groove 231f.

[0498] In this embodiment, if host 2 determines that foreign matter has entered the third housing groove 231f, the host 2's processor can be controlled to turn off the host 2's charging circuit. Therefore, when the first earphone 31 is housed in the third housing groove 231f, no charging current flows between the first charging spring 231e and the first electrode of the first earphone 31, and no charging current flows between the second charging spring 231c and the second electrode of the first earphone 31. In this way, charging abnormalities (e.g., short circuits) can be prevented.

[0499] In this embodiment, if host 2 determines that a foreign object has entered the third accommodating groove 231f, the host 2's processor may further control an alarm module within host 2 to send an alarm and warn the user. The alarm module may be, for example, a speaker, buzzer, or motor within host 2. Based on product requirements, it may be understood that an alarm mechanism is not necessary.

[0500] In this embodiment, if the host 2 determines that no foreign matter has entered the third housing groove 231f, the host 2's processor may be controlled to turn on the host 2's charging circuit. Therefore, when the first earphone 31 is housed in the third housing groove 231f, the host 2 charges the first earphone 31 normally.

[0501] In another embodiment, the host may not have a foreign object detection mechanism, depending on the product requirements.

[0502] 8. Host 2 charges the first earphone 31.

[0503] Referring to the above description, the structural design of the first and second electrodes in the first earphone 31 ensures that after the first earphone 31 is positioned in the third housing groove 231f at multiple rotation angles, the first charging spring 231e can contact the first electrode 312 and the second charging spring 231c can contact the second electrode 314, thereby ensuring that the host 2 can successfully charge the first earphone 31. This design simplifies user operation and improves the user experience.

[0504] 9. Host 2 charging overheat protection mechanism

[0505] In this embodiment, heat is generated when the host 2 charges the first earphone 31. This can cause the temperature of the host 2 or the first earphone 31 to rise excessively. For example, improper use by the user or a short circuit in the internal circuit may cause the charging current of the host 2 to become excessive, in which case the temperature rise is likely to become excessively high. Excessively high temperatures can affect the safety, lifespan, and reliability of the product, and may also affect the user experience.

[0506] With this in mind, host 2 may have a temperature sensing module, which may be located, for example, near the first housing groove 213y and / or the third housing groove 231f. The temperature sensing module may be, for example, a thermistor. The temperature sensing module is configured to detect the temperature at its mounting location and report that temperature to the processor of host 2. Based on the detection information from the temperature sensing module, the processor may determine whether the temperature rise exceeds a threshold. If the temperature rise is above the threshold, the processor may control the charging circuit of host 2 to turn off, preventing host 2 from charging the first earphone 31 and suppressing the temperature rise. If the temperature rise is below the threshold, the processor may control the charging circuit of host 2 to turn on, allowing host 2 to charge the first earphone 31. This charging overheat protection mechanism can improve product safety, lifespan, and reliability and ensure a good user experience.

[0507] In this embodiment, if the processor of host 2 determines that the temperature rise is excessively high, the processor may further control an alarm module within host 2 to send an alarm and warn the user. The alarm module may be, for example, a speaker, buzzer, or motor within host 2. Based on product requirements, it may be understood that an alarm mechanism is not necessary.

[0508] In another embodiment, the host may not have a charging overheat protection mechanism, depending on the product requirements.

[0509] The foregoing description represents only a specific implementation of the present application and is not intended to limit the scope of protection of this application. Any modification or substitution readily understood by a person skilled in the art within the technical scope disclosed herein shall be included within the scope of protection of this application. Accordingly, the scope of protection of this application shall be subject to the scope of protection of the claims.

[0510] [Note 1] These are earphones, The earphone has a centrally symmetrical shape and comprises an earphone front housing, an earphone magnet, a first electrode, and a second electrode. The earphone magnet is a ring structure surrounding the center line of the earphone and is fixed to the inner wall of the earphone front housing. Both the first electrode and the second electrode are located on the outside of the earphone and are ring structures surrounding the center line of the earphone. The first electrode and the second electrode are each fixed to two opposing ends of the earphone front housing. Earphones. [Note 2] The aforementioned electrode 1 has a closed ring structure or an open ring structure. The earphones described in Appendix 1. [Note 3] The first electrode has an open ring structure and comprises at least two first electrodes, the at least two first electrodes being arranged in pairs with a gap between them and distributed on the same circle. The earphones described in Appendix 1 or 2. [Note 4] The earphone comprises a first earphone circuit board assembly, the earphone front housing has a through hole, and the first earphone circuit board assembly is attached to the earphone front housing. The first electrode comprises a connected electrode body and a conductive portion, the conductive portion of the first electrode is positioned on the inner surface of the electrode body of the first electrode, the electrode body of the first electrode is fixed to the outer surface of the end of the earphone front housing, and the conductive portion of the first electrode passes through the through hole of the earphone front housing and is electrically connected to the circuit board of the first earphone circuit board assembly inside the earphone front housing. Earphones as described in any one of the items 1 to 3 in the appendix. [Note 5] The aforementioned earphone comprises an earphone rear housing and a second earphone circuit board assembly. The second electrode comprises a connected electrode body and a conductive portion, the conductive portion of the second electrode is located on the inner surface of the electrode body of the second electrode, the electrode body of the second electrode is connected to the rear earphone housing and the front earphone housing, the second earphone circuit board assembly is located in the space enclosed by the electrode body of the second electrode and the rear earphone housing, and the conductive portion of the second electrode is electrically connected to the circuit board of the second earphone circuit board assembly. Earphones as described in any one of the items 1 to 4 in the appendix. [Note 6] There is one earphone magnet, and the earphone magnet has a closed ring structure, or there are at least two earphone magnets, and the at least two earphone magnets are spaced apart, and each earphone magnet has an open ring structure. Earphones as described in any one of the items 1 through 5 of the appendix. [Note 7] The earphone comprises the first earphone circuit board assembly, an earplug support, and a front ventilation acoustic mesh. The first earphone circuit board assembly is attached to the earphone front housing, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earplug support is a hollow tubular structure, one end of the earplug support has a through hole, the wall of the earplug support is provided with a front ventilation hole, and the front ventilation hole communicates with the space inside and outside the earplug support. The front ventilation acoustic mesh comprises a fastening region and a blocking region, the blocking region being connected to the side surface of the fastening region, the fastening region being joined to the front housing of the earphone and the end of the earplug support away from the through-hole of the earplug support, the blocking region being joined to the inner wall of the earplug support to block the front ventilation hole, and the blocking region being configured to allow sound wave signals to pass through. Earphones as described in any one of the items 1 through 6 of the appendix. [Note 8] The earphone comprises the first earphone circuit board assembly, the earplug support, a speaker, and a sub-microphone. The earphone front housing has a sound-collecting channel, the first earphone circuit board assembly is attached to the earphone front housing, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earplug support is a hollow tubular structure, one end of the earplug support has a through hole, the wall of the earplug support is provided with a front ventilation hole, the front ventilation hole communicates with the internal and external spaces of the earplug support, the end of the earplug support away from the through hole is fixed to the front housing of the earphone, and the internal cavity of the earplug support communicates with the sound-collecting channel. At least a portion of the speaker is located in the internal cavity of the earplug support, the speaker is electrically connected to the circuit board of the first earphone circuit board assembly, and the sound wave signal emitted from the speaker is propagated to the outside of the earphone through the through hole of the earplug support. The sub-microphone is positioned on the circuit board of the first earphone circuit board assembly, and is configured to pick up noise signals entering the sound pickup channel through the internal cavity of the earplug support and the through-hole of the earplug support, and the speaker is configured to generate an inverse signal whose signal phase is opposite to that of the noise signal to achieve active noise reduction. Earphones as described in any one of the items 1 through 7 of the appendix. [Note 9] The speaker is further configured to emit a sound wave signal of a specific frequency, and the sub-microphone is further configured to pick up the sound wave signal of the specific frequency. The earphone includes a control unit, which is configured to determine whether the earphone is being worn based on the signal intensity of the sound wave signal of a specific frequency picked up by the sub-microphone. The earphones described in Appendix 8. [Note 10] The earphone comprises the first earphone circuit board assembly, the earplug support, and the fitting detection plate. The first earphone circuit board assembly is attached to the earphone front housing, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. One end of the earplug support is fixedly connected to the front housing of the earphone, and the material of the earplug support includes a conductive material. The fitting detection plate is located on the front housing of the earphone, is connected to the end of the earplug support near the front housing of the earphone, is electrically connected to the circuit board of the first earphone circuit board assembly, and the fitting detection plate and the earplug support are each configured to generate coupling capacitance when they come into close proximity to the human body. The earphone comprises the control unit, which is configured to determine whether the earphone is being worn based on the value of the coupling capacitance. Earphones as described in any one of the items 1 through 9 of the appendix. [Note 11] The earphone comprises the first earphone circuit board assembly, the mounting detection sensor is disposed on the circuit board of the first earphone circuit board assembly, and the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly. The earphone comprises the control unit, which is configured to determine whether the earphone is being worn based on the detection signal from the wearing detection sensor. The earphones described in any one of the items from Appendix 1 to 10. [Note 12] The earphone comprises an earplug support and an earplug, the earplug comprising a connected inner earplug cover and an outer earplug cover, the inner earplug cover being sleeved around the earplug support, the outer earplug cover surrounding the inner earplug cover, a first bump provided on the surface of the outer earplug cover facing the inner earplug cover, and the first electrode positioned between the earplug and the second electrode. Earphones as described in any one of the items from Appendix 1 to 11. [Note 13] The earphone comprises the earplug support and the earplug, The earplug support is a hollow tubular structure, the wall of the earplug support is provided with the front ventilation hole, the front ventilation hole communicates with the internal and external spaces of the earplug support, a skirt edge is formed around the earplug support, and the front ventilation hole is adjacent to the skirt edge. The earplug comprises a connected outer earplug cover and an inner earplug cover, the inner earplug cover being sleeved around the earplug support, the skirt edge being exposed to the outside of the inner earplug cover, a second bump being provided on the surface of the end of the inner earplug cover facing the skirt edge, the second bump contacting the skirt edge, and the outer earplug cover surrounding the inner earplug cover. The first electrode is located between the earplug and the second electrode. Earphones as described in any one of the items from Appendix 1 to 12. [Note 14] The earphone comprises the earphone rear housing, a third earphone circuit board assembly, and a main microphone. The rear housing has a sound-collecting through-hole and at least two wind noise-preventing through-holes, the sound-collecting through-hole and each wind noise-preventing through-hole communicate with the space inside and outside the rear housing, the third earphone circuit board assembly is located in the rear earphone housing, and the second electrode is connected to the rear earphone housing and the front earphone housing. The main microphone is positioned on the circuit board of the third earphone circuit board assembly, and is configured to pick up sound wave signals entering the rear housing through the sound-collecting through-hole. Earphones as described in any one of the items from Appendix 1 to 13. [Note 15] These are earphones, The earphone has a centrally symmetrical shape and comprises an earphone rear housing, a third earphone circuit board assembly, an antenna, a control unit, and a switch circuit. The circuit board of the third earphone circuit board assembly is provided with two power supply points, and the third earphone circuit board assembly is located in the rear housing of the earphone. The antenna is located in the rear housing of the earphone, and is a common-mode antenna. The antenna comprises a first antenna branch and a second antenna branch, which are spaced apart, and each of the first and second antenna branch sections has a tip. The tips of the first and second antenna branch sections are each connected to a single feed point, and the first antenna branch is coupled to the second antenna branch section, thereby allowing the antenna to operate in a specific frequency band. The control unit is configured to determine which antenna branch has better signal quality from the first antenna branch and the second antenna branch, and to control the switch circuit to switch the antenna branch with better signal quality to the feed end and the other antenna branch to the ground end. Earphones. [Note 16] The earphone rear housing comprises a bottom wall and a circumferential side wall, the circumferential side wall surrounds the periphery of the bottom wall, and the circumferential side wall and the bottom wall surround an open cavity. The first antenna branch section comprises a first segment and a second segment, which are bent and connected, the tip of the first antenna branch section being the end of the first segment away from the second segment, the first segment being fixed to the circumferential wall, and the second segment being fixed to the bottom wall. The earphones described in Appendix 15. [Note 17] The second segment has a curved shape, extending from the end of the second segment that is close to the first segment to the end of the second segment that is far from the first segment. The second segment extends in the direction from the circumferential wall toward the bottom wall, or the second segment extends in the direction from the bottom wall toward the circumferential wall. The earphones described in Appendix 16. [Note 18] The second antenna branch section is bent and connected and comprises a third segment and a fourth segment, the tip of the second antenna branch section being the end of the third segment away from the fourth segment, the third segment being fixed to the circumferential wall, and the fourth segment being fixed to the bottom wall. The fourth segment has a curved shape, extending from the end of the fourth segment that is close to the third segment to the end of the fourth segment that is far from the third segment. The fourth segment extends in the direction from the circumferential wall toward the bottom wall, or the fourth segment extends in the direction from the bottom wall toward the circumferential wall. The earphones described in Appendix 17. [Note 19] The first antenna branch and the second antenna branch each have a tail end, the tail end and the tip of the first antenna branch are each two opposing ends of the first antenna branch, and the tail end and the tip of the second antenna branch are each two opposing ends of the second antenna branch. The tail end or the tip of the first antenna branch is connected to the tail end or the tip of the second antenna branch. Earphones as described in any one of the items 15 to 18 of the appendix. [Note 20] The two power supply points on the circuit board of the third earphone circuit board assembly are symmetrical with respect to the center line of the earphone. Earphones as described in any one of the items 15 to 19 of the appendix. [Note 21] An assembly jig, used in an earphone described in any one of appendices 1 to 20, wherein the earphone comprises an earphone front housing and at least two earphone magnets, The assembly jig comprises a base, a jig magnet, and an upper cover. The base has a workpiece positioning groove and a jig magnet mounting groove, the workpiece positioning groove is configured to accommodate the earphone front housing, the number of jig magnet mounting grooves matches the number of earphone magnets, all of the jig magnet mounting grooves are distributed at intervals outside the workpiece positioning groove and communicate with the workpiece positioning groove, The number of jig magnets matches the number of earphone magnets, and one jig magnet is mounted in each jig magnet mounting groove. The upper cover comprises a cover plate and an upper cover limiting rod, the cover plate is provided with through holes for magnet placement, the number of the through holes for magnet placement matches the number of the earphone magnets, the axis of each through hole for magnet placement is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side surface of the cover plate in the thickness direction, the upper cover limiting rod has limiting portions, the number of limiting portions matches the number of the earphone magnets, and a projection of one limiting portion in the axial direction of the through hole for magnet placement corresponds to entering one through hole for magnet placement. The upper cover is detachably connected to the base, the cover plate is in contact with the base, the projections in different regions of the workpiece positioning groove in the axial direction of the magnet placement through hole enter the magnet placement through hole, the upper cover limiting rod extends into the workpiece positioning groove, each limiting portion is positioned at a distance from the side wall of the workpiece positioning groove, and each limiting portion is configured to form a gap with the inner wall of the earphone front housing positioned in the workpiece positioning groove. Each through-hole for magnet placement is configured to allow one earphone magnet to be placed within the assembly jig, each gap is configured to allow one earphone magnet that enters the assembly jig to be placed within the earphone front housing, and each jig magnet is configured to magnetically attract the earphone magnet placed within the earphone front housing. Assembly jig. [Note 22] All of the aforementioned jig magnet mounting grooves are evenly distributed at equal intervals on the outside of the workpiece positioning groove. The assembly jig described in Appendix 21. [Note 23] The base is provided with an upper cover positioning hole, the upper cover is equipped with an upper cover positioning rod connected to the cover plate, the upper cover positioning rod and the upper cover limiting rod are located on the same side of the cover plate, and when the upper cover is detachably connected to the base, the upper cover positioning rod is inserted into the upper cover positioning hole. Assembly jigs as described in Appendix 21 or 22. [Note 24] The base has a base magnet, and the upper cover has an upper cover magnet fixed to the cover plate, and when the upper cover is detachably connected to the base, the upper cover magnet magnetically attracts the base magnet. An assembly jig as described in any one of the items 21 to 23 of the append...

Claims

1. These are earphones, The earphone has a centrally symmetrical shape and comprises an earphone rear housing, a third earphone circuit board assembly, an antenna, a control unit, and a switch circuit. The circuit board of the third earphone circuit board assembly is provided with two power supply points, and the third earphone circuit board assembly is located in the rear housing of the earphone. The antenna is located in the rear housing of the earphone, and is a common-mode antenna. The antenna comprises a first antenna branch and a second antenna branch, which are spaced apart, and each of the first and second antenna branch sections has a tip. The tips of the first and second antenna branch sections are each connected to a single feed point, and the first antenna branch is coupled to the second antenna branch section, thereby allowing the antenna to operate in a specific frequency band. The control unit is configured to determine which antenna branch has better signal quality from the first antenna branch and the second antenna branch, and to control the switch circuit to switch the antenna branch with better signal quality to the feed end and the other antenna branch to the ground end. Earphones.

2. The earphone rear housing comprises a bottom wall and a circumferential side wall, the circumferential side wall surrounds the periphery of the bottom wall, and the circumferential side wall and the bottom wall surround an open cavity. The first antenna branch section comprises a first segment and a second segment, which are bent and connected, the tip of the first antenna branch section being the end of the first segment away from the second segment, the first segment being fixed to the circumferential wall, and the second segment being fixed to the bottom wall. The earphone according to claim 1.

3. The second segment has a curved shape, extending from the end of the second segment closest to the first segment to the end of the second segment furthest from the first segment. The second segment extends in the direction from the circumferential wall toward the bottom wall, or the second segment extends in the direction from the bottom wall toward the circumferential wall. The earphone according to claim 2.

4. The second antenna branch section is bent and connected and comprises a third segment and a fourth segment, the tip of the second antenna branch section being the end of the third segment away from the fourth segment, the third segment being fixed to the circumferential wall, and the fourth segment being fixed to the bottom wall. The fourth segment has a bent shape, and extends from the end of the fourth segment that is close to the third segment to the end of the fourth segment that is far from the third segment. The fourth segment extends in the direction from the circumferential wall toward the bottom wall, or the fourth segment extends in the direction from the bottom wall toward the circumferential wall. The earphone according to claim 3.

5. The first antenna branch and the second antenna branch each have a tail end, the tail end and the tip of the first antenna branch are each two opposing ends of the first antenna branch, and the tail end and the tip of the second antenna branch are each two opposing ends of the second antenna branch. The tail end or the tip of the first antenna branch is connected to the tail end or the tip of the second antenna branch. The earphone according to claim 1.

6. The two power supply points on the circuit board of the third earphone circuit board assembly are symmetrical with respect to the center line of the earphone. The earphone according to claim 1.

7. An assembly jig, used in an earphone according to any one of claims 1 to 6, wherein the earphone comprises an earphone front housing and at least two earphone magnets, The assembly jig comprises a base, a jig magnet, and an upper cover. The base has a workpiece positioning groove and a jig magnet mounting groove, the workpiece positioning groove is configured to accommodate the earphone front housing, the number of jig magnet mounting grooves matches the number of earphone magnets, all of the jig magnet mounting grooves are distributed at intervals outside the workpiece positioning groove and communicate with the workpiece positioning groove, The number of jig magnets matches the number of earphone magnets, and one jig magnet is mounted in each jig magnet mounting groove. The upper cover comprises a cover plate and an upper cover limiting rod, the cover plate is provided with through holes for magnet placement, the number of the through holes for magnet placement matches the number of magnets for the earphone, the axis of each through hole for magnet placement is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side surface of the cover plate in the thickness direction, the upper cover limiting rod has limiting portions, the number of limiting portions matches the number of magnets for the earphone, and a projection of one limiting portion in the axial direction of the through hole for magnet placement enters a corresponding through hole for magnet placement. The upper cover is detachably connected to the base, the cover plate is in contact with the base, the projections in different regions of the workpiece positioning groove in the axial direction of the magnet placement through hole enter the magnet placement through hole, the upper cover limiting rod extends into the workpiece positioning groove, each limiting portion is positioned at a distance from the side wall of the workpiece positioning groove, and each limiting portion is configured to form a gap with the inner wall of the earphone front housing positioned in the workpiece positioning groove. Each through-hole for magnet placement is configured to allow one earphone magnet to be placed within the assembly jig, each gap is configured to allow one earphone magnet that enters the assembly jig to be placed within the earphone front housing, and each jig magnet is configured to magnetically attract the earphone magnet placed within the earphone front housing. Assembly jig.

8. All of the aforementioned jig magnet mounting grooves are evenly distributed at equal intervals on the outside of the workpiece positioning groove. The assembly jig according to claim 7.

9. The base is provided with an upper cover positioning hole, the upper cover is equipped with an upper cover positioning rod connected to the cover plate, the upper cover positioning rod and the upper cover limiting rod are located on the same side of the cover plate, and when the upper cover is detachably connected to the base, the upper cover positioning rod is inserted into the upper cover positioning hole. The assembly jig according to claim 7.

10. The base has a base magnet, and the upper cover has an upper cover magnet fixed to the cover plate, and when the upper cover is detachably connected to the base, the upper cover magnet magnetically attracts the base magnet. The assembly jig according to claim 7.

11. The base is provided with a clamp housing groove, and the clamp housing groove communicates with the workpiece positioning groove. The assembly jig is equipped with a clamp, and a part of the clamp is configured to clamp the front housing of the earphone. When the upper cover is detachably connected to the base, both a portion of the clamp and the earphone front housing clamped by the clamp are housed in the workpiece positioning groove, and the other portion of the clamp is housed in the clamp housing groove. The assembly jig according to claim 7.

12. A method for manufacturing earphones, Using an assembly jig, at least two earphone magnets are assembled in the earphone front housing of the earphone described in any one of claims 1 to 6. The assembly jig comprises a base, a jig magnet, and an upper cover. The base has a workpiece positioning groove and a jig magnet mounting groove, the workpiece positioning groove is configured to accommodate the earphone front housing, the number of jig magnet mounting grooves matches the number of earphone magnets, all of the jig magnet mounting grooves are distributed at intervals outside the workpiece positioning groove and communicate with the workpiece positioning groove, The number of jig magnets matches the number of earphone magnets, and one jig magnet is mounted in each jig magnet mounting groove. The upper cover comprises a cover plate and an upper cover limiting rod, the cover plate is provided with through holes for magnet placement, the number of the through holes for magnet placement matches the number of magnets for the earphone, the axis of each through hole for magnet placement is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side surface of the cover plate in the thickness direction, the upper cover limiting rod has limiting portions, the number of limiting portions matches the number of magnets for the earphone, and a projection of one limiting portion in the axial direction of the through hole for magnet placement enters a corresponding through hole for magnet placement. The upper cover is detachably connected to the base, the cover plate is in contact with the base, the projections in different regions of the workpiece positioning groove in the axial direction of the magnet placement through hole enter the magnet placement through hole, the upper cover limiting rod extends into the workpiece positioning groove, each limiting portion is positioned at a distance from the side wall of the workpiece positioning groove, and each limiting portion is configured to form a gap with the inner wall of the earphone front housing positioned in the workpiece positioning groove. Each through-hole for magnet placement is configured to allow one earphone magnet to be placed within the assembly jig, each gap is configured to allow one earphone magnet that enters the assembly jig to be placed within the earphone front housing, and each jig magnet is configured to magnetically attract the earphone magnet placed within the earphone front housing accordingly. The aforementioned manufacturing method is The steps include positioning the earphone front housing in the workpiece positioning groove of the assembly jig, The steps include: attaching the upper cover of the assembly jig to the base such that the cover plate contacts the base, the protrusions in different areas of the earphone front housing in the axial direction of the magnet placement through-holes each enter the magnet placement through-holes, the upper cover limiting rod extends into the earphone front housing, and each limiting portion forms a gap with the inner wall of the earphone front housing; A step of attaching all of the earphone magnets to the earphone front housing, wherein one earphone magnet is attached to a corresponding position in the earphone front housing via one magnet placement through-hole and one gap corresponding to the magnet placement through-hole, and one jig magnet is attached to the inner wall of the earphone front housing to one earphone magnet corresponding to the jig magnet, The steps include removing the upper cover from the base, The steps include: fixing each earphone magnet to the inner wall of the earphone front housing, The steps include removing the earphone front housing, to which the earphone magnet is attached, from the base. A manufacturing method that includes this.

13. The step of fixing each earphone magnet to the inner wall of the earphone front housing includes the step of joining each earphone magnet to the inner wall of the earphone front housing using a dispensing technique. The manufacturing method according to claim 12.

14. All of the aforementioned jig magnet mounting grooves are evenly distributed at equal intervals on the outside of the workpiece positioning groove. The manufacturing method according to claim 12.

15. The base is provided with an upper cover positioning hole, the upper cover is equipped with an upper cover positioning rod connected to the cover plate, the upper cover positioning rod and the upper cover limiting rod are located on the same side of the cover plate, and when the upper cover is detachably connected to the base, the upper cover positioning rod is inserted into the upper cover positioning hole. The manufacturing method according to claim 12.

16. The base has a base magnet, and the upper cover has an upper cover magnet fixed to the cover plate, and when the upper cover is detachably connected to the base, the upper cover magnet magnetically attracts the base magnet. The manufacturing method according to claim 12.

17. The base is provided with a clamp housing groove, and the clamp housing groove communicates with the workpiece positioning groove. The assembly jig is equipped with a clamp, and a part of the clamp is configured to clamp the front housing of the earphone. When the upper cover is detachably connected to the base, both a portion of the clamp and the earphone front housing clamped by the clamp are housed in the workpiece positioning groove, and the other portion of the clamp is housed in the clamp housing groove. The manufacturing method according to claim 12.

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