Earphone, assembly jig, and earphone manufacturing method

Abstract

The present application provides an earphone. The earphone has a centrosymmetric 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 center line of the earphone, and the earphone magnet is fixed to the inner wall of the earphone front housing. Both the first electrode and the second electrode are located outside the earphone and are ring structures surrounding the center line of the earphone. The first electrode and the second electrode are fixed to two opposite ends of the earphone front housing, respectively. The present application further provides an assembly jig and a method for manufacturing the earphone. According to the solution of the present application, a user can wear 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 priority to Chinese Patent Application No. 202111677020.9, entitled “EARPHONE, ASSEMBLY JIG, AND EARPHONE MANUFACTURING METHOD,” filed with the State Intellectual Property Office of the People's Republic of China on December 31, 2021, the entire contents of which are incorporated herein by reference. [Technical field]

[0002] The present application relates to the field of electronic devices, and in particular to an earphone, an assembly jig, and a method for manufacturing the earphone. [Background technology]

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

[0004] The embodiments of the present application provide earphones, assembly tools, and methods for manufacturing earphones that allow a user to wear the earphones and store the earphones in an earphone case at random angles, reducing restrictions on user operation and improving the user experience.

[0005] According to a first aspect, an embodiment of the present application provides an earphone. The earphone has a centrosymmetric 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 center line of the earphone, and the earphone magnet is fixed to the inner wall of the earphone front housing. Both the first electrode and the second electrode are located outside the earphone and are ring structures surrounding the center line of the earphone. The first electrode and the second electrode are respectively fixed to two opposite ends of the earphone front housing. According to the appearance structure of the earphone in this solution, the earphone can be worn and stored in the earphone case at a random angle, and it can be ensured that the earphone case normally charges the earphone when the earphone is stored in the earphone case at a random angle. In addition, the earphone magnet is designed with a ring structure surrounding the center line of the earphone, and the earphone magnet can magnetically attract the magnet in the earphone case. When a user puts the earphone into 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. Therefore, the earphone in this solution can improve the user experience.

[0006] In one implementation of the first aspect, the first electrode is a closed ring structure or an open ring structure. This electrode design can ensure normal charging of the earphones when they are randomly placed.

[0007] In one implementation of the first aspect, the first electrode is an open ring structure, and there are at least two first electrodes, which are arranged in spaced pairs and distributed on the same circle. This electrode design can ensure normal charging of the earphones when they are randomly placed.

[0008] In one implementation of the first aspect, an earphone includes a first earphone circuit board assembly, an earphone front housing has a through hole, and the first earphone circuit board assembly is attached to the earphone front housing. A first electrode includes a connected electrode body and a conductive portion, the conductive portion of the first electrode is disposed on an inner surface of the electrode body of the first electrode, the electrode body of the first electrode is fixed to an outer surface of an 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 in the earphone front housing. This design can achieve reliable mechanical and electrical connection of the first electrode.

[0009] In one implementation of the first aspect, 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 is disposed on an inner surface of the electrode body of the second electrode, the electrode body of the second electrode is connected to the earphone rear housing and the earphone front housing, the second earphone circuit board assembly is located in a space surrounded by the electrode body of the second electrode and the earphone rear housing, and the conductive portion of the second electrode is electrically connected to the circuit board of the second earphone circuit board assembly. This design can realize a reliable mechanical connection and electrical connection of the second electrode.

[0010] In one implementation of the first aspect, there is one earbud magnet, and the earbud magnet has a closed ring structure, or there are at least two earbud magnets, and the at least two earbud magnets are spaced apart, and each earbud magnet has an open ring structure. The earbud magnet is designed with a ring structure surrounding the centerline of the earbud, and the earbud magnet can magnetically attract the magnet in the earbud case. When the user puts the earbud into the earbud case, the magnetic attraction can automatically position the earbud, so that the user can place the earbud in a predetermined position without precisely aligning the earbud.

[0011] In one implementation of the first aspect, 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 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, a wall of the earplug support is provided with a front vent, and the front vent communicates with the space inside and outside the earplug support. The front vent acoustic mesh includes a fastening area and a blocking area, the blocking area is connected to a side of the fastening area, the fastening area is bonded to the earphone front housing and an end of the earplug support away from the through hole of the earplug support, the blocking area is bonded to the inner wall of the earplug support to block the front vent, and the blocking area allows sound wave signals to pass through. The front vent acoustic mesh in this solution has not only a function of fixedly connecting the earplug support to the earphone front housing, but also a sound adjustment function.

[0012] In one implementation of the first aspect, the earphone includes a first earphone circuit board assembly, an earplug support, a speaker, and a secondary microphone. The earphone front housing has a sound pickup 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, a wall of the earplug support is provided with a front air vent, the front air vent communicates with the space inside and outside the earplug support, an end of the earplug support away from the through hole of the earplug support is fixed to the earphone front housing, and the internal cavity of the earplug support communicates with the sound pickup 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 secondary microphone is disposed on the circuit board of the first earphone circuit board assembly, the secondary microphone is configured to pick up a noise signal entering the sound pick-up channel through the inner 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 inverse to that of the noise signal to realize active noise reduction. In this solution, the active noise reduction of the earphone is realized using a suitable structural design.

[0013] In one implementation of the first aspect, the speaker is further configured to emit a sound wave signal of a specific frequency, and the secondary microphone is further configured to pick up the sound wave signal of the specific frequency. The earphone includes a controller, and the controller is configured to determine whether the earphone is worn based on the signal strength of the sound wave signal of the specific frequency picked up by the secondary microphone. In this solution, the secondary microphone is reused to realize the wearing detection function. This facilitates the centralized design of the internal stacking of the earphone, and the stacking space in the earphone can be reduced.

[0014] In one implementation of the first aspect, the earphone includes a first earphone circuit board assembly, an earplug support, and a fit detection plate. The first earphone circuit board assembly is attached to the earphone front housing, and the first electrode is electrically connected to a circuit board of the first earphone circuit board assembly. One end of the earplug support is fixedly connected to the earphone front housing, and a material of the earplug support includes a conductive material. The fit detection plate is located on the earphone front housing, and the fit detection plate is connected to an end of the earplug support close to the earphone front housing and electrically connected to the circuit board of the first earphone circuit board assembly, and the fit detection plate and the earplug support are each configured to generate a coupling capacitance when in proximity to a human body. The earphone includes a controller, and the controller is configured to determine whether the earphone is being worn based on a value of the coupling capacitance.

[0015] In this solution, by using the fit detection plate and the earplug support together as the detection plate for fit detection, the area of ​​the detection plate can be increased, and the consistency and reliability of fit detection can be ensured. Since the earplug support is closer to the inside of the ear canal than the fit detection plate, the capacitance detection data of the earplug support is more accurate and reliable. This helps to improve the overall reliability of fit detection. In addition, when the earplug support is reused as the detection plate used for fit 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 aspect, the earphone includes a first earphone circuit board assembly, a wear detection sensor disposed on a 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 includes a controller, the controller configured to determine whether the earphone is worn based on a detection signal of the wear detection sensor.

[0017] In one implementation of the first aspect, the earphone includes an earplug support and an earplug, the earplug includes a connected earplug inner cover and an earplug outer cover, the earplug inner cover is sleeved around the earplug support, the earplug outer cover surrounds the earplug inner cover, a surface of the earplug outer cover facing the earplug inner cover is provided with a first bump, and a first electrode is located between the earplug and the second electrode. The first bump can increase the structural strength of the earplug outer 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 a front vent is provided in the wall of the earplug support, the front vent communicates with the space inside and outside the earplug support, and 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 is sleeved around the earplug support, the skirt edge is exposed to the outside of the earplug inner cover, and a second bump is provided on the surface of the end of the earplug inner cover facing the skirt edge, the second bump contacts the skirt edge, and the earplug outer cover surrounds the circumference of the earplug inner cover. The first electrode is located between the earplug and the second electrode. The design of the second bump contacting the skirt edge of the earplug support can prevent the earplug from blocking the front vent and ensure 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 primary microphone. Earphones The rear housing has a sound pickup through hole and at least two wind noise prevention through holes, and the sound pickup through hole and each wind noise prevention through hole are: Earphones The third earphone circuit board assembly is located in the earphone rear housing, and the second electrode is connected to the earphone rear housing and the earphone front housing. The main microphone is disposed on the circuit board of the third earphone circuit board assembly, and the main microphone is connected to the sound pickup through hole. EarphonesThe rear housing is configured to pick up the sound wave signal entering the rear housing, and the plurality of anti-wind noise 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 centrosymmetric 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 is provided with 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, the antenna is a common mode antenna, the antenna includes a first antenna branch and a second antenna branch, the first antenna branch and the second antenna branch are spaced apart, the first antenna branch and the second antenna branch each have 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 an antenna branch having a better signal quality from the first antenna branch and the second antenna branch, and control the switch circuit to switch the antenna branch having the better signal quality to the power supply end and switch the other antenna branch to the ground end. In this solution, according to the switching design, no matter what angle the user wears the earphone, the communication quality of the earphone can be ensured, and the user experience can be guaranteed.

[0021] In one implementation of the second aspect, the earphone rear housing includes a bottom wall and a peripheral side wall, the peripheral side wall surrounds the periphery of the bottom wall, and the peripheral side wall and the bottom wall surround an open cavity. The first antenna branch includes a first segment and a second segment that are bent and connected, the tip of the first antenna branch is an end of the first segment away from the second segment, the first segment is fixed to the peripheral side wall, and the second segment is fixed to the bottom wall. In this solution, the structure of the antenna can be adapted to the structure of the earphone rear housing, and the space of the earphone rear housing can be appropriately used to place the antenna.

[0022] In one implementation of the second aspect, the second segment has a bent shape, from an end of the second segment close to the first segment to an end of the second segment far from the first segment, and the second segment extends in a direction from the peripheral side wall to the bottom wall, or the second segment extends in a direction from the bottom wall to the peripheral side wall. In this solution, the topology structure of the antenna is appropriately designed to ensure the antenna performance.

[0023] In one implementation of the second aspect, the second antenna branch includes a third segment and a fourth segment that are bent and connected, and the tip of the second antenna branch is an end of the third segment that is far from the fourth segment, the third segment is fixed to the peripheral side wall, and the fourth segment is fixed to the bottom wall. The fourth segment has a bent shape from an end of the fourth segment close to the third segment to an end of the fourth segment far from the third segment, and the fourth segment extends in a direction from the peripheral side wall to the bottom wall, or the fourth segment extends in a direction from the bottom wall to the peripheral side wall. In this solution, the topology structure of the antenna is appropriately designed to ensure the antenna performance.

[0024] In one implementation of the second aspect, the first antenna branch and the second antenna branch each have a tail end, the tail end of the first antenna branch and the tip of the first antenna branch are two opposite ends of the first antenna branch, respectively, and the tail end of the second antenna branch and the tip of the second antenna branch are two opposite ends of the second antenna branch, respectively. The tail end of the first antenna branch or the tip of the first antenna branch is coupled to the tail end of the second antenna branch or the tip of the second antenna branch. In this solution, the antenna coupling method is properly designed to ensure antenna performance.

[0025] In one implementation of the second aspect, the two feeding 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, the tips of the two antenna branches are essentially centrally symmetrical, so that the performance consistency of the two antenna branches 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 work positioning groove and a jig magnet mounting groove, the work positioning groove is configured to accommodate the earphone front housing, the number of the jig magnet mounting grooves is equal to the number of the earphone magnets, and all the jig magnet mounting grooves are distributed at intervals outside the work positioning groove and communicate with the work positioning groove. The number of the jig magnets is equal to the number of the earphone magnets, and one jig magnet is correspondingly mounted in one jig magnet mounting groove. The upper cover includes a cover plate and an upper cover limiting rod, the cover plate is provided with magnet placement through holes, the number of the magnet placement through holes is the same as the number of the earphone magnets, the axis of each magnet placement through hole is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side of the cover plate in the thickness direction, the upper cover limiting rod has a limiting part, the number of the limiting parts is the same as the number of the earphone magnets, and the protrusion of one limiting part in the axial direction of the magnet placement through hole enters one magnet placement through hole correspondingly. The upper cover is detachably connected to the base, the cover plate contacts the base, the protrusions of different regions of the work positioning groove in the axial direction of the magnet placement through hole enter the magnet placement through hole respectively, the upper cover limiting rod extends into the work positioning groove, each limiting part is disposed at a distance from the side wall of the work positioning groove, and each limiting part is configured to form a gap with the inner wall of the earphone front housing positioned in the work positioning groove. Each magnet placement through hole is configured to allow one earphone magnet to be placed in the assembly jig, each gap is configured to allow one earphone magnet that enters the assembly jig to be placed in the earphone front housing, and each jig magnet is configured to magnetically attract one earphone magnet that is correspondingly placed in the earphone front housing. In this solution, the assembly jig is designed to allow the earphone magnets to be attached to the earphone front housing accurately, reliably, and conveniently.

[0027] In one implementation of the third aspect, all the fixture magnet mounting grooves are equally spaced and evenly distributed outside the work positioning groove. This design ensures that the magnetic attraction force of the fixture magnet to the earphone magnet is uniform and constant.

[0028] In one implementation of the third aspect, the base is provided with an upper cover positioning hole, 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, and the top cover includes a top cover magnet fixed to a cover plate, and when the top cover is detachably connected to the base, the top cover magnet magnetically attracts the base magnet. This design can ensure a reliable connection between the top cover and the base.

[0030] In one implementation form of the third aspect, the base is provided with a clamp receiving groove, and the clamp receiving groove is in communication with the work positioning groove. The assembly jig includes a clamp, and a part of the clamp is configured to clamp the earphone front housing. When the upper cover is detachably connected to the base, both a part of the clamp and the earphone front housing clamped by the clamp are received in the work positioning groove, and another part of the clamp is received in the clamp receiving groove. In this solution, the earphone front housing can be clamped using the clamp, so that the earphone front housing can be placed in the assembly jig. In addition, the clamp can also be used in another assembly station in the earphone.

[0031] According to a fourth aspect, the present application provides a method for manufacturing an earphone, wherein an assembly jig is used to assemble at least two earphone magnets in an earphone front housing of the earphone. The manufacturing method includes the steps of positioning the earphone front housing in the work positioning groove of the assembly jig; attaching the upper cover of the assembly jig to the base so that the cover plate contacts the base, the protrusions of different regions of the earphone front housing in the axial direction of the magnet arrangement through hole respectively enter into the magnet arrangement through hole, 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 earphone magnets to the earphone front housing, where one earphone magnet is attached to a corresponding position in the earphone front housing through one magnet arrangement through hole and one gap corresponding to the magnet arrangement 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; fixedly connecting 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 the earphone magnet to be attached to the earphone front housing accurately, reliably, and conveniently.

[0032] In one implementation of the fourth aspect, fixedly connecting each earbud magnet to an inner wall of the earbud front housing includes bonding each earbud magnet to the inner wall of the earbud front housing using a dispensing technique. This solution can reliably secure the earbud magnets in the earbud front housing. [Brief description of the drawings]

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

[0034] The following embodiments of the present application provide a wearable device. The wearable device is a completely new product form in which a host and an earphone are integrated. The product form of the host includes, but is not limited to, electronic devices such as smart watches, electronic blood pressure monitors, smart bands, smart helmets, smart clothing, smart glasses, mobile Wi-Fi, and smart backpacks. The earphones are wireless earphones, including, but not limited to, Bluetooth earphones (e.g., TWS (True Wireless Stereo, TWS) earphones), infrared earphones, etc. In the following, an example is described in which the host has a product form of a smart watch 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, and the earphone 3 may be housed in the host 2. In the following, first, the relevant design of the host 2 will be described, then the relevant design of the earphone 3 will be described, and finally, the overall features and functions of the wearable device 1 will be described.

[0036] Host 2 product form and operation design

[0037] 1 to 4, the host 2 may include a first portion 21, a rotating shaft assembly 22, a second portion 23, a function button 24, and an opening button 25. The first portion 21 may be referred to as a cover, and the second portion 23 may be referred to as a main body.

[0038] The host 2 may further include a wrist strap, which may be connected to either side of the second portion 23 .

[0039] 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, which causes the host 2 to be in a closed state or an open state. When the host 2 is closed, the first part 21 and the second part 23 surround a storage space, and the earphone 3 is stored in the storage space.

[0040] In FIG. 1, the host 2 is in a closed state. In this case, the first portion 21 and the second portion 23 are closed. In all of FIG. 2 to FIG. 5, the host 2 is in an open state. In this case, the first portion 21 is open at a specific angle relative to the second portion 23. For example, the opening angle α of the first portion 21 in FIG. 2 may be approximately 15 degrees, the opening angle β of the first portion 21 in FIG. 3 may be approximately 75 degrees, and the first portion 21 in FIG. 5 rotates to a limit position, and the opening angle c of the first portion 21 may be approximately 90 degrees. It can be understood that the specific value of the opening angle c generated when the first portion 21 is in the limit position can 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, when the host 2 is in an open state, the earphones 3 may be removed from the second part 23 and attached to the first part 21. This design is convenient for users to take out and put away the earphones 3 (as will be further described below). In another embodiment, the earphones 3 may be housed in the second part 23 after the host 2 is opened.

[0042] In this embodiment, due to the special structural design of the rotating shaft assembly 22, the rotation stroke of the first portion 21 can be segmented, and in each stroke segment, the first portion 21 has a corresponding rotation characteristic. In a specific 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 the closed host 2, the rotation stroke of the first part 21 can be divided into three segments. The stroke from the state shown in FIG. 1 to the state shown in FIG. 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 an opening angle α, and the first part 21 rotates automatically without external force due to the torque drive of the rotating shaft assembly 22. The stroke from the state shown in FIG. 2 to the state shown in FIG. 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 an opening angle a to an opening angle b, and the rotating shaft assembly 22 no longer applies torque to the first part 21, and the first part 21 needs to rotate under the external force drive. The stroke from the state shown in FIG. 3 to the state shown in FIG. 5 may represent the third stroke segment of the first part 21. In the third stroke segment, the opening angle of the first portion 21 gradually increases from opening angle b to opening angle c, and the first portion 21 rotates automatically without external force due to the torque drive of the rotating shaft assembly 22. When the opening angle of the first portion 21 is opening angle c, the torque of the rotating shaft assembly 22 may continue to exist. It is easily understood that the host 2 has a limiting structure, and the first portion 21 may maintain a balanced state under the cooperation of the limiting structure and the rotating shaft assembly 22.

[0044] The flip of a conventional flip electronic device (e.g., a laptop or flip mobile phone) requires a user to continuously apply force to open it, and the touch sense experience is monotonous. However, in this embodiment, the structural design of the rotating shaft assembly 22 is used to segment the rotation stroke of the first part 21, so that the first part 21 only needs to be driven by the force applied by the user in the second stroke segment, and in other stroke segments, it can rotate automatically without the force applied by the user. This provides a new touch sense experience.

[0045] In addition, in the third stroke segment, the first part 21 is driven by the rotating shaft assembly 22 to move in a direction away from the second part 23. Even when the opening angle of the first part 21 reaches the opening angle c, the driving force of the rotating 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 is convenient for the user to remove the earphone 3 and can improve the user experience.

[0046] In another embodiment, the structure of the rotating shaft can be designed such that the rotational stroke of the first portion 21 does not need to be segmented, but rather the first portion 21 rotates in a manner that continues to apply force by the user or automatically at all times.

[0047] As shown in FIGS. 1 to 3 , an opening button 25 may be attached to the second portion 23, and the opening button 25 and the rotating shaft assembly 22 may be located at both ends of the second portion 23 in the radial direction, respectively. A portion of the opening button 25 may be exposed outside the second portion 23 for a user to press. A locking structure (described below) of the opening button 25 may form a detachable connection with a locking structure (described below) of the first portion 21. The opening button 25 cooperates with the locking structure of the first portion 21 to open and lock the host 2.

[0048] For example, as shown in FIG. 1, when the host 2 is in a closed state, the locking structure of the opening button 25 forms a releasable connection with the locking structure of the first portion 21 .

[0049] 1 and 2, when a user needs to open the host 2, the user can press the opening button 25, which causes the opening button 25 to generate a mechanical movement, and the locking structure of the opening button 25 will no longer cooperate with the locking structure of the first portion 21. In this case, the first portion 21 can automatically open under the driving of the rotating shaft assembly 22 and perform a first stroke segment. Conversely, when a user wants to close the host 2, the user can press down the first portion 21 to rotate the first portion 21 toward the second portion 23. When the locking structure of the second portion 23 contacts the locking structure of the opening button 25, the opening button 25 generates a mechanical movement, and the locking structure of the opening button 25 resumes cooperation with the locking structure of the first portion 21.

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

[0051] In another embodiment, the opening button may alternatively be attached to the first part, and the second part has a locking structure. The opening button cooperates with the locking structure of the second part to open and lock the host. The first part may be the cover, and the second part may be the main body. The following description will be continued by taking the design in which the opening button 25 is attached to the second part 23 as an example.

[0052] The above is a brief description of the product form and operation design of wearable device 1. Below, the first part 21, the second part 23, the opening button 25, and the function button 24 will be described, and then the rotating shaft assembly 22 will be described, thereby providing a detailed description of the specific structure of wearable device 1.

[0053] Host 2 Structure

[0054] 5 and 6, the first portion 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. The display 211 and the first host circuit board assembly 212 are both attached to the first host housing 213, and the first host circuit board assembly 212 is located between the display 211 and the first host housing 213.

[0055] Structure of the first host housing 213

[0056] 7 and 8, the first host housing 213 may have a substantially disk-like appearance. The first host housing 213 may be assembled by a plurality of 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 Figs. 7 to 9, the first frame body 213a may be a frame structure having a substantially circular outer contour. A through hole 213z is provided at the edge of the first frame body 213a, and the through hole 213z may be a waist-shaped hole (or may be called a runway-shaped hole). The first frame body 213a may be made of a conductive material, for example, a metal. The first frame body 213a may also be used as an antenna (described below).

[0058] As shown in FIGS. 7 to 9, the first bracket 213b may have a substantially disk-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 arranged at an interval. As shown in FIG. 9, when viewed from one side of the first bracket 213b, the local area in which the first housing groove 213y and the second housing groove 213x are formed is concave. As shown in FIGS. 7 and 8, when viewed from the other side of the first bracket 213b, the local area in which the first housing groove 213y and the second housing groove 213x are formed is convex. As shown in FIGS. 4 and 9, the first housing groove 213y may be configured to house the first earphone 31, and the second housing groove 213x may be configured to house the second earphone 32.

[0059] 9, the first bracket 213b may further include a groove around its periphery, with the opening of the groove and the opening of the first receiving groove 213y being located on the same side of the first bracket 213b. The groove surrounds the first receiving groove 213y and the second receiving groove 213x. As described below, the 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 main body 213a, the circumferential region of the first frame main body 213a surrounds the periphery of the first bracket 213b, and the through hole 213z of the first frame main body 213a is also located outside the first bracket 213b.

[0061] As shown in FIG. 9, the locking portion 213d may be fixed to an edge of the first bracket 213b and disposed opposite the through hole 213z of the first frame body 213a. Referring to FIG. 9 and FIG. 10, a frame structure 213w may be provided at an end of the locking portion 213d remote from the first bracket 213b, and the frame structure 213w may be located on the same side of the first bracket 213b as the opening of the first receiving 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 remote 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 a locking structure in the opening button 25. The inclined surface 213u functions as a guide, which allows the frame structure 213w to cooperate smoothly with the locking structure of the opening button 25.

[0062] Magnet Assembly 213r

[0063] As shown in FIGS. 8 and 11, the magnet assembly 213r can 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 of which has 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] Based on 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 and have 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 with at least two magnetic field directions (which may be obtained by magnetizing different physical regions of the single magnet in different directions).

[0067] 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 receiving groove 213y (or the second receiving 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 receiving groove 213y and the outer surface of the groove wall of the second receiving groove 213x.

[0068] As shown in FIG. 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 consistent, for example. With reference to FIG. 11 and FIG. 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 receiving groove 213y, and the two first host mounting magnets 213r2 of the first group may be symmetrically attached to both sides (e.g., left and right in the perspective view of FIG. 7) of the groove wall of the first receiving groove 213y. The second group is attached to the outer surface of the groove wall of the second receiving groove 213x, and the two first host mounting magnets 213r2 of the second group are symmetrically attached to both sides (e.g., left and right in the perspective view of FIG. 7) of the groove wall of the second receiving groove 213x.

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

[0070] As shown in Fig. 11, the number of fastening brackets 213r1 can match the number of first host mounting magnets 213r2. For example, there are four fastening brackets 213r1. Referring to Fig. 11 and Fig. 7, the fastening brackets 213r1 can be attached to the first bracket 213b, and one fastening bracket 213r1 corresponds to one first host mounting magnet 213r2, so that each first host mounting magnet 213r2 is fixed between one fastening bracket 213r1 and the first bracket 213b.

[0071] In this embodiment, the fastening bracket 213r1 can ensure the secure fixation of the first host mounting magnet 213r2 mounted on the first host. In another embodiment, the fastening bracket 213r1 may not be provided based on product requirements.

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

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

[0074] As shown in FIG. 8, the seal ring 213s may surround a circle, and the shape of the seal ring 213s is consistent with 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 may be integrally formed, for example, using a one-piece injection molding technique. The seal bracket 213t is made of a hard material, has high structural strength, and is not easily deformed. The seal ring 213s is made of a soft material, has low structural strength, and is easily deformed. A component including the seal ring 213s and the seal bracket 213t may be referred to as a seal member.

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

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

[0077] For example, the seal bracket 213t may be bonded into the groove 213n using a dispensing technique. An adhesive may be filled into the groove 213n and into the gap between the portion of the bracket main portion 213p where the protrusion 213q is not arranged and the bottom surface of the groove 213n. Since the seal bracket 213t has a plurality of protrusions 213q distributed at intervals, several gaps are formed between the seal bracket 213t and the bottom surface of the groove 213n. This ensures the amount of adhesive to be filled and the bonding strength. In addition, the presence of the gaps makes it difficult for the adhesive to overflow. This ensures the yield of the dispensing technique.

[0078] 14, the seal ring 213s is located on the side of the seal bracket 213t away from the protruding portion 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 individually attached to the groove 213n, 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 more easily assembled to the first frame body 213a.

[0080] First host circuit board assembly 212

[0081] 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, a primary circuit board of the host 2. The components on the circuit board 212a may include, for example, a ground spring 212b, a ground spring 212c, a ground spring 212d, a ground spring 212e, and a power spring 212f. The ground spring 212b, the ground spring 212c, the ground spring 212d, and the ground spring 212e may all be electrically connected to a ground on the circuit board 212a, and the power spring 212f may be connected to a power point on the circuit board 212a. The components on the circuit board 212a may include a magnetic field sensor, for example, a Hall effect sensor, a magnetic field sensor ... Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect sensor, a Hall effect A sensor or magnetometer may also be included.

[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 accommodating groove 213y and is partially located between the groove wall of the first accommodating groove 213y and the groove wall of the second accommodating groove 213x.

[0083] Display 211

[0084] 6, the display 211 may have a circular outer shape, and the edges of the display 211 may have transitional 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 and realize image display. The display 211 may further have a touch control function.

[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 status detection magnet 231x, a status detection magnet 231w, and a second host mounting magnet 231v.

[0088] As shown in FIG. 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 region of the second bracket 231a, and the third housing groove 231f and the fourth housing groove 231g are arranged at an interval. The structures of the third housing groove 231f and the fourth housing groove 231g may basically be the same. When viewed from one side of the second bracket 231a, the local region in which 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 region in which the third housing groove 231f and the fourth housing groove 231g are formed is convex.

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

[0090] In this embodiment, the groove depth of the third accommodating groove 231f may be greater than the groove depth of the first accommodating groove 213y, and the groove depth of the fourth accommodating groove 231g may be greater than the groove depth of the second accommodating groove 213x. The groove depth may be defined as the maximum distance from the opening of the accommodating groove (collectively referring to the first accommodating groove 213y, the second accommodating groove 213x, the third accommodating groove 231f, and the fourth accommodating groove 231g) to the groove bottom surface of the accommodating groove in the normal direction of 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. A part of the first earphone 31 is located in the first receiving groove 213y, and another part is located outside the first receiving groove 213y. The maximum distance between the part of the first earphone 31 located in the first receiving groove 213y and the plane on which the opening of the first receiving groove 213y is located can be defined as a first distance, and the maximum distance between the part of the first earphone 31 located outside the first receiving groove 213y and the plane on which the opening of the first receiving groove 213y is located can be defined as a second distance, and the first distance is smaller than the second distance. That is, when the host 2 is opened, a small part of the first earphone 31 is located in the first receiving groove 213y, and a large part of the first earphone 31 is exposed outside the first receiving groove 213y. Similarly, for the second earphone 32, when the host 2 is opened, a small part of the second earphone 32 is located in the second receiving groove 213x, and a large part of the second earphone 32 is located outside the second receiving groove 213x. The aforementioned design will be further described below.

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

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

[0094] As shown in Fig. 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 receiving groove 231f and the fourth receiving groove 231g, and the distance between the through hole 231b and the third receiving groove 231f and the distance between the through hole 231b and the fourth receiving groove 231g may be essentially equal. Referring to Fig. 19 and Fig. 4, the through hole 231b is configured to allow the locking portion 213d of the first part 21 to pass through (described further below).

[0095] Charging spring

[0096] As shown in FIG. 18, there may be two second charging springs 231c and two first charging springs 231e. Referring to FIG. 16 to FIG. 19, one second charging spring 231c and one first charging spring 231e are attached to the groove wall of the third accommodating groove 231f, and the other second charging spring 231c and the other first charging spring 231e are attached to the groove wall of the fourth accommodating groove 231g. In the case of the third accommodating groove 231f, the second charging spring 231c is located in the through hole 231z of the third accommodating groove 231f, and the contact head of the second charging spring 231c may extend into the third accommodating groove 231f through the through hole 231z. The first charging spring 231e is located in another through hole 231z of the third accommodating groove 231f, and the contact head of the first charging spring 231e may extend into the third accommodating groove 231f through another through hole 231z. In the case of the fourth accommodating groove 231g, the second charging spring 231c is located in the through hole 231z of the fourth accommodating groove 231g, and the contact head of the second charging spring 231c may extend into the fourth accommodating groove 231g through the through hole 231z. The first charging spring 231e is located in another through hole 231z of the fourth accommodating groove 231g, and the contact head of the first charging spring 231e may extend into the fourth accommodating 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 both be electrically connected to the first host circuit board assembly 212 via a line (e.g., a flexible circuit board). The second charging spring 231c and the first charging spring 231e in the third receiving groove 231f are respectively configured to elastically contact two electrodes of the first earphone 31, and the second charging spring 231c and the first charging spring 231e in the fourth receiving groove 231g are respectively configured to elastically contact two electrodes of the second earphone 32 (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 Fig. 18, there may be two foreign object detection springs 231d. Referring to Figs. 16 to 19, one foreign object detection spring 231d may be attached to the groove wall of the third accommodating groove 231f, and this foreign object detection spring 231d may be located in the through hole 231y of the third accommodating groove 231f, and a contact head of the foreign object detection spring 231d may pass through the through hole 231y. The other foreign object detection spring 231d may be attached to the groove wall of the fourth accommodating groove 231g, and this foreign object detection spring 231d may be located in the through hole 231y of the fourth accommodating groove 231g, and a contact head of the foreign object detection spring 231d may pass through the through hole 231y.

[0100] In this embodiment, the foreign object detection spring 231d may 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 perform foreign object detection (detection of the presence or absence of a foreign object entering the third accommodating groove 231f and the fourth accommodating groove 231g). The specific principle will be described below.

[0101] Status detection magnet

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

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

[0104] 18 and 17, the status detecting magnet 231x may be fixed to the second bracket 231a on a side away from the opening of the third accommodating groove 231f, and the status detecting magnet 231x may be adjacent to the groove wall of the third accommodating groove 231f, and may further be close to the through-hole 231b. The status detecting magnet 231w and the status detecting magnet 231x may be located on the same side of the second bracket 231a, and the status detecting magnet 231w may be adjacent to the groove wall of the fourth accommodating groove 231g.

[0105] Second host mounting magnet 231v

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

[0107] Based on 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 Fig. 18 and Fig. 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 consistent, for example. The two second host mounting magnets 231v may be fixed to the second bracket 231a on the side away from the opening of the third receiving groove 231f. One second host mounting magnet 231v may be located on the side of the groove wall of the third receiving groove 231f facing the fourth receiving groove 231g, and the other second host mounting magnet 231v may be located on the side of the groove wall of the fourth receiving groove 231g facing the third receiving 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 attached to each of both sides of the groove wall of the third receiving groove 231f, and one second host mounting magnet 231v may be attached to each of both sides of the groove wall of the fourth receiving groove 231g.

[0110] Host Battery 234

[0111] As shown in FIG. 6 and FIG. 20, the host battery 234 may be fixed to the second bracket 231a and located on the side of the second bracket 231a away from the opening of the third receiving groove 231f. The host battery 234 may be located between the groove wall of the third receiving groove 231f and the groove wall of the fourth receiving 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 enclosure 232

[0113] As shown in FIG. 21, the third host housing 232 may be a generally ring-shaped structure. The third host housing 232 may include a peripheral sidewall 232a, an inner bearing pedestal 232b, and an inner bearing pedestal 232g. The peripheral sidewall 232a may enclose a ring shape. The inner bearing pedestal 232b and the inner bearing pedestal 232g may both be connected to the inner side of the peripheral sidewall 232a, and the inner bearing pedestal 232b and the inner bearing pedestal 232g may be spaced apart. For example, the inner bearing pedestal 232b and the inner bearing pedestal 232g may be located generally at opposite ends of the peripheral sidewall 232a in the radial direction.

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

[0115] 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 stand 232b, and the open button mounting space may further pass through the peripheral side wall 232a and form a first opening 232d on the peripheral side wall 232a. The open button mounting space may face the rotating shaft mounting space 232f. For example, both may be located approximately at two opposite ends of the same diameter of the third host housing 232.

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

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

[0118] Open button 25

[0119] As shown in FIGS. 25 and 26, the opening button 25 may include a cap 251 , a resilient member 252 , a button support 253 , and a touch-sensitive spring 254 .

[0120] 27, the cap 251 may have an integral 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] 27, the pressing portion 251a may be substantially elongated and strip-shaped, 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, and the surface 251h is the surface on which the upper base of the trapezoidal cross-section of the pressing portion 251a is located.

[0122] 27, the bump 251b may be disposed 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 or a flat surface, or may be formed by connecting an arcuate surface and a flat surface.

[0123] As shown in Fig. 27, the guide portion 251c may be a column, for example a cylinder. 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, and the two guide portions 251c may be located at two opposite ends of the pressing portion 251a, respectively. The guide portion 251c is configured to guide the cap 251 when the cap 251 moves.

[0124] 27, the bearing portion 251d is connected to the pressing portion 251a on the side farther 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 of the two free ends of the C-shaped structure of the bearing portion 251d are connected to the pressing portion 251a, and 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] 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 slope 251f. The buckle 251e is a locking structure for the opening button 25 described above.

[0126] As shown in Figures 25 and 26, the elastic member 252 can be a spring. Alternatively, the elastic member 252 can be a separate component that is elastically expandable and contractible. There can be two elastic members 252. With reference to Figures 26 and 27, one elastic member 252 can be sleeved into one guide portion 251c and the other elastic member 252 can be sleeved into the other guide portion 251c.

[0127] As shown in FIG. 28, the button support 253 may include a support 253a and two mounting ears 253b connected to both sides of the support 253a. The support 253a may be flat. The mounting ears 253b may be bent. The mounting ears 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 in the two mounting ears 253b may be bent backward relative to the second plate 253d. For example, in the perspective view of the figure, the first plate 253c on the left side may be bent leftward relative to the second plate 253d on the left side, and the first plate 253c on the right side may be bent rightward relative to the second plate 253d on the right side.

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

[0129] 27 and 28, the button support 253 may be mounted in the open space 251g of the cap 251, and two mounting ears 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 the cap 251 is moved to a limit position.

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

[0131] 29 and 25, the touch-sensitive spring 254 may be secured to the button support 253, with the resilient region 254a facing the bump 251b.

[0132] The detailed structure of the opening button 25 has been described above. The following describes the assembly of the opening button 25 and the third host housing 232 and the opening button 25. 5 and Cooperation with the locking portion 213d of the first bracket 213b will now be described.

[0133] 30 and 31, the opening button 25 can be attached to the opening button attachment space of the third host housing 232. The state of the opening button 25 shown in FIGS. 30 and 31 corresponds to the closed state of the host 2.

[0134] As shown in FIG. 31, the pressing portion 251a may be exposed from the first opening 232d of the opening button mounting space. Referring to FIG. 31 and FIG. 23, a part of the guide portion 251c may be positioned in the guide slot 232j, but the bottom surface of the guide slot 232j is not in contact. As shown in FIG. 31, a part of the bearing portion 251d facing the pressing portion 251a with a gap therebetween may be positioned in the groove 232k. The buckle 251e may be positioned in the opening button mounting space and outside the groove 232k. The cap 251 may move in the axial direction of the guide portion 251c. Since the first opening 232d restricts the pressing portion 251a, the cap 251 cannot basically move in another direction.

[0135] 31 and 23, the elastic member 252 may be sleeved into the guide portion 251c, and a part of the elastic member 252 may be positioned in the guide slot 232j. One end of the elastic member 252 may contact the pressing portion 251a, and the other end may contact the bottom surface of the guide slot 232j.

[0136] As shown in FIG. 31 and FIG. 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 can be located in the open space 251g of the cap 251 and inserted into the groove 232i, and the support 253a can press the side wall of the groove 232i close to the first opening 232d. The two mounting ears 253b of the button support 253 can be supported on both sides of the bearing portion 251d (or may overlap). Each mounting ear 253b abuts against a portion of the bearing portion 251d that faces the pressing portion 251a at a distance, so that the cap 251 cannot continue to move from the open button mounting space. In other words, this is the limiting function of the button support 253 on the cap 251 in the limit position. Each mounting ear 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 wall of the groove 232i and the side wall of the groove 232k can restrict the button support 253 in the opposite direction, so that the button support 253 cannot basically move in the axial direction of the guide slot 232j.

[0137] As shown in Fig. 31, the touch-sensitive spring 254 can be fixed to the support 253a. The touch-sensitive spring 254 can be inserted into the groove 232i, or the touch-sensitive spring 254 can be located outside the groove 232i. The touch-sensitive spring 254 is located between the bump 251b and the buckle 251e, and the elastic region 254a of the touch-sensitive spring 254 faces the bump 251b. There is a certain interval between the touch-sensitive spring 254 and the buckle 251e.

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

[0139] Conversely, when the pressing portion 251a is no longer pressed, the elastic member 252 rebounds and pushes the cap 251, moving 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 ear 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 facing the pressing portion 251a with a gap therebetween presses the mounting ear 253b again, the cap 251 stops moving.

[0140] 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 opening button 25. The first host housing 213 is not cut to clearly show the assembly structure. FIG. 33 is a partial enlarged schematic view at position B in FIG. 32.

[0141] 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 detachable connection. In this way, the first host housing 213 and the third host housing 232 can be kept closed by the cooperation between the locking portion 213d and the buckle 251e. In other words, the first part 21 and the second part 23 of the host 2 can be closed.

[0142] As shown in FIG. 33, when the user presses the pressing portion 251a, the buckle 251e moves and does not maintain the buckle connection with the locking portion 213d. In this case, the first host housing 213 is automatically opened by the driving of the rotating shaft assembly 22. When the user tries to close the first part 21 and the second part 23, after the locking portion 213d contacts the buckle 251e, the locking portion 213d may tighten the buckle 251e until the locking portion 213d forms the buckle connection with the buckle 251e again. In this case, the first part 21 and the second part 23 are locked.

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

[0144] In another embodiment, the host can be opened and locked by using an opening button with another structure based on product requirements. For example, a buckle can be arranged on the first support of the first host housing (the buckle corresponds to the buckle 251e), and a locking part is arranged on the opening button (for example, the locking part is arranged on the bearing part of the cap, and the locking part corresponds to the locking part 213d). Alternatively, for example, a torsion spring mechanism can be used to provide a repulsive force to the movable cap, and a buckle (or locking part) is designed on the cap of the opening button, and the host is opened and closed by the cooperation of the buckle (or locking part) and the buckle (or locking part) on the first bracket of the first host housing. In other embodiments, the touch-sensitive spring can be canceled.

[0145] 33 and 13, when the first part 21 and the second part 23 are closed, the first bracket 213b and the second host housing 231 are closed and aligned 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 manner, the seal ring 213s can seal the gap between the first bracket 213b and the second host housing 231 to prevent external water vapor from entering the inside of the host 2 through this gap.

[0146] It is easily understood that in another embodiment, the seal bracket and the seal ring may be alternatively attached to the periphery of the second host housing 231. The assembly structure including the seal bracket, the seal ring and the second host housing is similar to that described above, and a detailed description is omitted here. When the first part 21 and the second part 23 are closed, the seal ring of the second host housing 231 abuts against the periphery of the first bracket to seal the gap between the second host housing 231 and the first bracket 213b.

[0147] Alternatively, different from the above seal setup, in another embodiment, the seal bracket 213t may not be disposed, and only the seal ring is disposed 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 FIG. 6 and FIG. 21, the function button 24 may be substantially cylindrical. The function button 24 may be attached to the function button attachment 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 attachment through hole 232e along the axis of the function button attachment through hole 232e and / or the function button 24 may rotate around the axis of the function button attachment through hole 232e. The function button 24 is configured to be pressed and / or rotated by a user to perform a corresponding function of the host 2, such as selection, confirmation, switching of image display, etc.

[0149] As shown in Fig. 34 and Fig. 6, the opening button 25 and the function button 24 may be assembled to the third host housing 232, and the second host housing 231 may be further assembled to the third host housing 232. The peripheral side wall 232a of the third host housing 232 surrounds the second host housing 231 and the host battery 234. Referring to Fig. 34 and Fig. 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 to facilitate the mounting of the rotating shaft assembly 22.

[0150] 4th host chassis 233

[0151] As shown in Figures 35, 36 and 37, the fourth host housing 233 may be substantially disk-shaped. bracketThe third bracket 233a may include a bracket 233a and a lens 233b. The third bracket 233a may be generally 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 to transmit light reflected by the human body.

[0152] Second host circuit board assembly 235

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

[0154] Wireless charging coil 236

[0155] The wireless charging coil 236 is configured to implement wireless charging. The wireless charging coil 236 may be attached to 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, pins of the wireless charging coil 236 may be soldered to the circuit board. As shown in FIG. 6, for example, the wireless charging coil 236 may be located on the periphery of the second host circuit board assembly 235.

[0156] 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. The second host circuit board assembly 235 and the wireless charging coil 236 may both 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 implementation form 1 of this embodiment, the rotating 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 FIG. 41, the shaft sleeve 222 may be a generally hollow cubic structure. The shaft sleeve 222 may have a first outer surface 222a and a second outer surface 222f, the first outer surface 222a and the second outer surface 222f being two intersecting outer surfaces on the shaft sleeve 222. In the host 2, the side on which the first outer surface 222a of the shaft sleeve 222 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 (described further below). When the host 2 is in a closed state, the second outer surface 222f is visible as an external surface of the host 2 (described further below).

[0160] 41 and 42, the internal cavity of the shaft sleeve 222 has a spacer plate 222n that 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 that connects the first internal cavity 222i and the second internal cavity 222j.

[0161] 42 and 43, the surface of the spacer plate 222n facing the first internal cavity 222i may be provided with a chute 222q and a number of alignment grooves 222p. The chutes 222q and all of the alignment grooves 222p may be connected to form a ring. The ring may be located around and concentric with the through hole 222s.

[0162] As shown in FIG. 42, the alignment groove 222p may have a "recessed" shape, and the inner surface of the alignment groove 222p may be an arc surface. All the alignment grooves 222p may be arranged along an arc. All the alignment grooves 222p may be divided into two groups, and these two groups are separated. The alignment grooves 222p in each group are connected in sequence. The number of the alignment grooves 222p in the two groups may be the same, for example, 3. In each group, two adjacent alignment grooves 222p have a common sidewall. The side of the sidewall may have rounded corners. The upper surface of the sidewall may be further recessed (i.e., there is a step) with respect to the surface on which the opening of the alignment groove 222p is located.

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

[0164] The above-mentioned designs of the number, structure, position, etc. of the chutes 222q and the number, structure, position, etc. of the alignment grooves 222p are merely examples for the purpose of explanation, and the present embodiment is not limited thereto.

[0165] In this embodiment, the chutes 222q and alignment grooves 222p are configured to align with bumps on the bump alignment members 227 (described below). In another embodiment, the spacer plate 222n may not include the chutes 222q and alignment grooves 222p, and the rotatable shaft may not include the bump alignment members 227.

[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 arc surface a and two flat surfaces b, which are connected to both sides of the arc surface a, respectively. The arc surface a is close to the first outer surface 222a, and the flat surfaces 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 in 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 in 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] 41, grooves 222k and 222m may be further provided on the first outer surface 222a of the shaft sleeve 222. Groove 222k and groove 222m may be located on both sides of the first region 222c, respectively, and groove 222m may be further located 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 opposing groove 222k communicates with the first region 222c.

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

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

[0171] As shown in FIG. 45, the bump alignment member 227 may be substantially cylindrical in shape. The bottom surface of the bump alignment member 227 may be provided with a bump 227a, and the bump 227a may have an arcuate surface protruding relative to the bottom surface. There is at least one bump 227a. For example, two bumps 227a are shown in FIG. 45. When the number of bumps 227a is two or more, the bumps 227a may be evenly distributed at intervals along the circumference. The bumps 227a are configured to align the chutes 222q and alignment grooves 222p on the spacer plate 222n of the shaft sleeve 222 (described further below).

[0172] As shown in FIG. 45, the bump matching member 227 may further have a through hole 227b, which may pass through the bump matching member 227 in the direction of the center line of the bump matching member 227. In this embodiment, the inner surface of the through hole 227b may include an arc surface 227c, a plane 227d, and a plane 227e. The two sides of the arc surface 227c are connected to the plane 227d and the plane 227e, respectively, and the plane 227d and the plane 227e may form an included 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 (described further below).

[0173] In an alternative embodiment, the rotating shaft need not include the bump alignment member 227 .

[0174] As shown in FIG. 46 and FIG. 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 of the driven member 229 in the thickness direction may be called a 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 flat surface 229b, and a second inclined surface 229c that are continuously connected (the three areas are represented by shading to emphasize the three areas). The normal of the flat surface 229b may be in the axial direction of the through hole 229g. The first inclined surface 229a and the flat surface 229b form an obtuse angle, and the flat surface 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 inclined surface 229a away from the flat surface 229b may be higher than the flat surface 229b, and the side of the second inclined surface 229c away from the flat surface 229b may be lower than the flat surface 229b.

[0175] As shown in FIG. 46, the shaft alignment surface of the driven member 229 may include two first inclined surfaces 229a, two flat surfaces, and two second inclined surfaces 229c. The shaft alignment surface may form two two-step ladders, which may extend stepwise 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 centrosymmetric with respect to the through hole 229g.

[0176] As shown in FIG. 48, the outer surface of the driven member 229 (the normal of the outer surface points to the through hole 229g) may be substantially arch-shaped. The outer surface may include an arc surface 229h, an arc surface 229i, a plane 229d, a plane 229e, and a plane 229f. The arc surface 229h and the arc surface 229i may be used as the top of the arch, and the arc surface 229h and the arc surface 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 arc surface 229h and the plane 229e, and a side surface of the plane 229f may be connected to the arc surface 229h. The plane 229d may be located between the arc surface 229i and the plane 229e, and a side surface of the plane 229d may be connected to the arc surface 229i.

[0177] The driven member 229 may be mounted within the first internal cavity 222i of the shaft sleeve 222, with the outer surface of the driven member 229 having the structure described above, which allows the driven member 229 to move within the first internal cavity 222i without rotating (as described further below). In other embodiments, the outer surface of the driven member 229 may have another suitable structure, provided that the design requirement that the driven member 229 move within the first internal cavity 222i without rotating is met.

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

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

[0180] As shown in Fig. 51, the first shaft 221 may be of a unitary structure and may include a first portion 221a, a second portion 221b, and a third portion 221c connected in series. It can be seen that in Fig. 51, three dashed boxes are used to distinguish the first portion 221a, the second portion 221b, and the third portion 221c. This is merely intended to intuitively explain the general positions of the first portion 221a, the second portion 221b, and the third portion 221c, and is not intended to strictly limit the boundaries of the first portion 221a, the second portion 221b, and the third portion 221c.

[0181] 51 and 52, the first portion 221a may include an end portion 221d and a main portion 221g, and both the end portion 221d and the main portion 221g may be substantially cylindrical. The main portion 221g is connected to the second portion 221b, and the end portion 221d is spaced 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 is lower than the outer circumferential surface of the main portion 221g.

[0182] As shown in FIG. 51 and FIG. 53, an end of the main portion 221g close to the end portion 221d may form a concave space 221f. The concave space 221f may have a plane 221i and a plane 221j. The plane 221i may be essentially parallel to the axis of the end portion 221d, the plane 221j may be essentially perpendicular to the axis of the end portion 221d, and the plane 221i may be essentially perpendicular to the plane 221j. The plane 221j may connect the outer circumferential surface of the main portion 221g and the plane 221i. Both sides of the 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 Fig. 53, there may be two concave spaces 221f, and there is a certain interval between the two concave spaces 221f. In another embodiment, the number of concave spaces 221f is not limited to the above description, and may be, for example, one or more than two.

[0184] In this embodiment, an end of the main portion 221g close to the end 221d may match with the through hole 227b of the bump matching member 227, and a surface of the end of the main portion 221g may match with an inner wall of the through hole 227b, so that the bump matching member 227 can move along the main portion 221g but cannot rotate (as described further below). In another embodiment, if the bump matching member 227 is not provided, the end of the main portion 221g close to the end 221d may not form the recessed space 221f.

[0185] 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 may rotate to coincide with the arc 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 portion 221d (the surface of the two-step ladder is shown by shading in Figure 53), and this two-step ladder has a structure similar (or substantially similar) to the two-step ladder of the driven member 229 described above. With reference 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 match the surface of the two-step ladder of the driven member 229, thereby causing the driven member 229 to realize a specific movement (described further below).

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

[0188] The above describes the individual structures of the shaft sleeve 222, the bump matching member 227, the first shaft 221, the driven member 229, and the elastic member 228. Below, the assembly structure including each of the components will be described.

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

[0190] It is easily understood that the alignment structure including the driven member 229 and the first internal cavity 222i is just one example. In another embodiment, another suitable alignment structure may be designed based on requirements such that the driven member 229 can only move within the first internal cavity 222i but cannot rotate relative to the first internal cavity 222i (the driven member 229 may rotate with the shaft sleeve 222, as described below).

[0191] 39, the elastic member 228 is located between the driven member 229 and the bump matching member 227. One end of the elastic member 228 can press the driven member 229, and the other end can press 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 FIGS. 51, 46, 45 and 42, the first portion 221a includes a through hole 229g of the driven member 229, an elastic member 228, a through hole 227 of the bump matching member 227, and a through hole 229b of the driven member 229. b and may pass through a 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 match the two-step ladder of the driven member 229, so that the second portion 221b and the driven member 229 may form a cam mechanism.

[0194] As shown in Fig. 53 and Fig. 45, the plane 221i of one concave space 221f of the main part 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 part 221g may face and coincide with the plane 227e of the through hole 227b of the bump matching member 227. The outer peripheral surface of the main part 221g may face and coincide with the arc surface 227c of the through hole 227b of the bump matching member 227. In this way, the bump matching member 227 can move along the main part 221g in the first internal cavity 222i but cannot rotate around the main part 221g.

[0195] It is easily understood that the alignment structure including the main portion 221g and the bump alignment member 227 is just one example. In another embodiment, another suitable alignment structure may be designed based on requirements, such that the bump alignment member 227 can only move along the main portion 221g, but cannot rotate around the main portion 221g.

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

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

[0198] As shown in FIG. 39 and FIG. 50, the gasket 225 may be fixed in 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. In the overall movement process of the driven member 229, the second portion 225b may always press the driven member 229. Since 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, so that the driven member 229 can closely match the inner surface of the first internal cavity 222i. This can avoid the driven member 229 from shaking due to manufacturing errors during movement. In another embodiment, the gasket 225 may not be provided based on practical requirements.

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

[0200] 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, and the edge of the opening 226a of the limiting member 226 can be clamped to the slot 221e of the first part 221a of the first shaft 221. Thus, the limiting member 226 limits the first shaft 221, prevents the first shaft 221 from coming off the shaft sleeve 22, and ensures that the relative positions of the first shaft 221 and the shaft sleeve 22 are kept constant, thereby ensuring reliable assembly of the driven member 229, the elastic member 228, the bump matching member 227 and the shaft sleeve 22.

[0201] As shown in Figures 56, 57 and 58, the second shaft 223 may be of a unitary structure and may include a first portion 223a, a second portion 223b and a third portion 223c connected in series. It can be seen that in Figure 56, three dashed boxes are used to distinguish the first portion 223a, the second portion 223b and the third portion 223c. This is merely intended to intuitively explain the general 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. 56-58, the first portion 223a and the second portion 223b may both be substantially cylindrical. The structure of the third portion 223c may be designed based on requirements. Figs. 56-58 are only examples. The second shaft 223 may be formed with a channel 223d, and the channel 223d may extend essentially in the axial direction of the first portion 223a. The channel 223d may pass through two opposite ends of the first portion 223a in the radial direction, and pass through one end of the second portion 223b and one end of the third portion 223c in the radial direction of the second portion 223b. In this way, the first portion 223a may be divided into two portions completely separated by the channel 223d, and the second portion 223b and the third portion 223c may each be divided into two connected portions by the channel 223d.

[0203] As shown in Figures 57 and 58, the end of the first portion 223a remote from the second portion 223b has a groove 223e, which may be specifically provided on the inner surface of the channel 223d. There may be two grooves 223e, each part of the first portion 223a having one groove 223e, and the openings of the two grooves 223e are opposite each other.

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

[0205] 59, 60, and 61 show a schematic structure of the flexible circuit board 26 after it has been bent and wound (the flexible circuit board 26 is bent and wound after being passed through the second shaft 223). In reality, the flexible circuit board 26 is in an unfolded state before being attached to the second shaft 223, and in the unfolded state, the flexible circuit board 26 may have a substantially long strip-like structure.

[0206] 59 to 61, flexible circuit board 26 may include electrical connection end 261 and electrical connection end 263. After flexible circuit board 26 is unfolded, electrical connection end 261 and electrical connection end 263 are both ends in the extension direction of flexible circuit board 26. Electrical connection end 261 and electrical connection end 263 are each configured for electrical signal transmission and may include a connector.

[0207] For example, the electrical connection end 261 may be connected to the first host circuit board assembly 212. For example, a 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 the second host circuit board assembly 235, a flexible circuit board connecting the function button 24 and the motor (e.g., the function button 24 and the motor may share the same flexible circuit board), etc. The flexible circuit board connecting the function button 24 and the motor may be fixed, for example, to the second bracket 231a on a side away from the opening of the third receiving groove 231f. A magnetic field sensor (e.g., a Hall effect sensor or a magnetometer) may further be disposed on the flexible circuit board. For example, there may be two magnetic field sensors, which may be respectively adjacent to the groove wall of the third receiving groove 231f and the groove wall of the fourth receiving groove 231g.

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

[0210] As shown in Figs. 59 to 61, the connection portion 264 has a ground portion 264a and a limiting portion 264b. The ground portion 264a may be, for example, close to the electrical connection end portion 261, and the limiting portion 264b may be, for example, distant from the electrical connection end portion 261. The limiting portion 264b may be, for example, a lug-like portion. For example, there may be two limiting portions 264b, and the two limiting portions 264b are located at both end portions of the connection portion 264, respectively.

[0211] As shown in FIG. 59-FIG. 61, the attachment portion 262 may be configured to match the second shaft 223 and may be in a bent and wound state. For example, in the perspective view of FIG. 59, a portion of the attachment portion 262 may be folded to form a stack, so that portion may be referred to as a stack portion. Another portion of the attachment portion 262 may be connected to the stack portion and wound to form a ring, so that portion may be referred to as a winding portion. The winding portion may be located at one end of the stack portion. It can be seen that in FIG. 59, the attachment portion 262 is shown using a dashed box. This is merely intended to intuitively explain the general location of the attachment portion 262, and is not intended to strictly limit the boundaries of the attachment portion 262.

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

[0213] 59 to 61, the flexible circuit board 26 may further include an isolation bracket 266. The structure of the isolation bracket 266 may be designed based on requirements, and may be, for example, substantially flat. The number of the 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 bracket 266 may be clamped between the folded layers of the laminate, and each layer may be connected (e.g., glued) to the isolation bracket 266.

[0214] In this embodiment, the unfolded width of the laminate is generally small, and it is difficult for the laminate to maintain the folded shape after it is folded (the folded layer is easy to tilt). However, since the separation bracket 266 is provided, the separation bracket 266 may enable the laminate to maintain the folded shape. In addition, the separation bracket 266 may also limit the bending radius of the laminate to avoid damage caused by excessive bending of the laminate. In another embodiment, the separation bracket 266 may not be provided based on product requirements. As shown in FIG. 59 and FIG. 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 may be located at the end of the laminate away from the winding part. The material of the protective layer 265 may be, for example, Mylar. In this embodiment, the position and material of the protective layer 265 may alternatively be designed based on product requirements and are not limited to the above description.

[0215] In this embodiment, the laminate may be fixed to the third host housing 232, and the protective layer 265 may separate the laminate from the third host housing 232 to prevent the flexible circuit board 26 from being damaged due to friction between the laminate and the third host housing 232 (as described further below). In addition, the protective layer 265 may further strengthen the structure of the laminate. In another embodiment, the protective layer 265 may not be provided based on product requirements.

[0216] 62 and 63 respectively show an assembly structure including the flexible circuit board 26 and the second shaft 223. When the second shaft 223 is assembled to the flexible circuit board 26, the laminated portion of the mounting portion 262 of the flexible circuit board 26 in the unfolded state may be folded first. In this case, the winding portion of the mounting portion 262 may remain in the unfolded state. Referring to FIG. 62, FIG. 63 and FIG. 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, so that the winding portion of the mounting portion 262 is positioned on the first portion 223a of the second shaft 223. In this case, the winding portion may be bent so that the winding portion is wound around the first portion 223a, and the number of coils of the winding portion may be determined based on the actual requirements. After the winding is completed, there is a certain distance between the winding portion and the end of the first portion 223a away from the second portion 223b (i.e., the winding portion does not cover the end of the first portion 223a). This can avoid damaging the winding portion and affecting its lifespan (as will be further described below). Both the electrical connection end 261 and the electrical connection end 263 of the flexible circuit board 26 are located outside the second shaft 223. The electrical connection end 261 and the electrical connection end 263 can be bent to fit the internal space of the host 2. The protective layer 265 and the 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 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 and the stack can be fixed to the first portion 223a, and the fixing method can be, for example, bonding. Another area of ​​the winding can be left unfixed and in a natural coiled state, or the area can be loosened to increase the diameter of the portion or tightened to decrease the diameter of the portion.

[0218] In this embodiment, since the wound 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 wound portion can be ensured by utilizing the axial dimension of the first portion 223a. Since the laminated portion of the flexible circuit board 26 is accommodated in the channel 223d of the second shaft 223 in a folded state, the space of the second shaft 223 required to accommodate the laminated portion having an unfolded width of 2×W2 is reduced. This allows the second shaft 223 to be made smaller, and further allows the host 2 to be made smaller.

[0219] In short, by designing the second shaft 223 with the above-mentioned structure and attaching the flexible circuit board 26 to this second shaft 223 by bending and winding it, it is possible to realize electrical connection of the host 2, ensure the width dimension of the flexible circuit board 26 so as to satisfy the design requirements, and realize the miniaturization of the host 2.

[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 222 j of the shaft sleeve 222 .

[0221] 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 peripheral surface of the second portion 223b may rotate to match the inner surface of the second region 222d. In other words, the outer peripheral surface of the second portion 223b may or may not contact the inner surface of the second region 222d (with a slight gap), and the inner surface of the second region 222d may rotate relative to the outer peripheral 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 Figures 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 another part of the laminated portion is located outside the shaft sleeve 222. Both the electrical connection end 261 and the electrical connection end 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 in the first region 222c, and both the ground portion 264a and the limiting portion 264b of the connection portion 264 are located outside the shaft sleeve 222.

[0223] 64, in this embodiment, the electrical connection end 261 of the flexible circuit board 26 may be fixed to the first host circuit board assembly 212, and the electrical connection end 261 may move together with the first part 21 of the host 2. Therefore, the connection part 264 connected to the electrical connection end 261 also moves together with the electrical connection end 261. In order to allow the connection part 264 to move based on design requirements, ensure that the movement of the connection part 264 is controlled, and avoid fatigue damage of the connection part 264, the connection part 264 may be clamped using a clamp member to restrict the connection part 264. This will be described below.

[0224] 65, the clamp member 27 is substantially sheet-like, and may be provided with a clamp gap 27a. The clamp gap 27a may be essentially 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 may be manufactured using a material having excellent insulating properties and moisture resistance, such as a Mylar sheet.

[0225] As shown in FIG. 65 and FIG. 66, the connection portion 264 may pass through the clamp gap 27a of the clamp member 27, the limiting portion 264b of the connection portion 264 may be clamped to the edge of the clamp gap 27a, the clamp member 27 may be fixed to the groove 222k and the groove 222m of the shaft sleeve 222, and the clamp member 27 may cover at least a part of the first region 222c. In this way, the clamp member 27 can clamp the connection portion 264 and limit the connection portion 264. When the connection portion 264 moves, due to the presence of the clamp member 27, the movement stroke of the connection portion 264 meets the design requirement and fatigue damage is unlikely to occur. In addition, the limiting portion 264b is designed to facilitate accurate positioning of the clamp member 27 and the flexible circuit board 26 during assembly on a manufacturing line, thereby ensuring the assembly yield. In another embodiment, the design of clamping the connection portion 264 using the clamp member 27 may be canceled.

[0226] The above has described the structures and assembly of the second shaft 223, the flexible circuit board 26, the shaft sleeve 222, and the clamp member 27. Below, 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.

[0227] FIG. 67 shows a cross-sectional view of an assembly structure including the rotating shaft assembly 22, the flexible circuit board 26, and the clamp member 27. In order to clearly express the flexible circuit board 26, the flexible circuit board 26 is not cut. As shown in FIG. 67, the assembly relationship 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 relationship 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 wound 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. In order to avoid interference between the end 221d and the winding portion, a certain gap may be provided in the axial direction of the first shaft 221 between the end 221d and the winding portion.

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

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

[0230] 68, both the third portion 221c of the first shaft 221 and the third portion 223c of the second shaft 223 may be fixed to an inner bearing stand 232g of the third host housing 232. The shaft sleeve 222 may be located in a 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 peripheral 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 peripheral side wall 232a.

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

[0232] As shown in FIG. 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 peripheral side wall 232a. In the perspective view of FIG. 69, the opening of the third receiving groove 231f and the opening of the fourth receiving 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 the shaft sleeve 222 of the second bracket 231a may be approximately located at two opposite ends of the same diameter of the peripheral side wall 232a, respectively. Referring to FIG. 69 and FIG. 68, the through hole 231b may communicate with the second opening 232c of the third host housing 232.

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

[0234] 70 and 69, the first frame body 213a in the first host housing 213 is fixedly connected to the side of the shaft sleeve 222 having the first outer surface 222a, and the first frame body 213a may cover a part of the area of ​​the first outer surface 222a and a part 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 from the through hole 213z of the first frame body 213a. The electrical connection end 261 and the connection portion 264 of the flexible circuit board 26 may pass through the through hole 213z of the first frame body 213a. The electrical connection end 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 can pass through the through hole 213z and is connected to the first frame body 213a through a conductor, which can 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 described below). The limiting portion 264b of the connection portion 264 is located in the through hole 213z.

[0235] As shown in FIG. 71 and FIG. 69, the through-hole 213z of the first frame body 213a is filled with a sealant (shown in a shaded area), and the sealant fills the through-hole 213z to cover the first outer surface 222a and the surface of the clamp member 27, and the sealant surrounds the connection portion 264 of the flexible circuit board 26. The sealant may be, for example, a sealant. The sealant 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 the moisture from the outside may enter the through-hole through the assembly gap between the shaft sleeve 222 and the peripheral side wall 232a. Alternatively, the moisture may be from the inside of the host 2, and the moisture in 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 (e.g., the position and / or size of the through hole of the first frame body 213a may be adjusted) so that only a part of the area of ​​the clamp member 27 may be exposed from the through hole 213z of the first frame body 213a, and the first outer surface 222a of the shaft sleeve 222 may be completely covered by the first frame body 213a. Correspondingly, the sealing material in the through hole 213z only covers the surface of the clamp member 27. Alternatively, in another embodiment, based on actual requirements, the first frame body 213a may not have the through hole 213z, and may be sealed without filling with the sealing material.

[0237] As shown in FIG. 72, the display 211 is attached to the first host housing 213. Referring to FIG. 72, FIG. 70 and FIG. 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 end 261 and the connection portion 264 of the flexible circuit board 26, and a part 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, FIG. 72 shows that in the closed state of the host 2, the second outer surface 222f of the shaft sleeve 222 can be seen as the external surface of the host 2.

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

[0239] The mechanical movements occurring in the host 2 during the opening and closing process of the host 2 will now be described.

[0240] Fig. 73 is a schematic side view of the host 2 in a closed state, and Fig. 74 is a schematic top view of the rotating shaft assembly 22 of the host 2 in Fig. 73. In Figs. 73 and 74, the shaft sleeve 222 is cut away to show the internal state of the rotating shaft assembly 22. Note that the cross section of the shaft sleeve 222 in Fig. 73 is perpendicular to the cross section of the shaft sleeve 222 in Fig. 74. Fig. 75 is a partial enlarged schematic view at position B in Fig. 74.

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

[0242] As shown in FIG. 73 and FIG. 75, when the host 2 is in the closed state, one end of the elastic member 228 presses the driven member 229 so that the driven member 229 maintains contact with the second part 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 part 221b of the first shaft 221 (i.e., the end of the inclined surface 221k close 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 part 221b. The force applied to the first inclined surface 229a by the inclined surface 221k may enable the driven member 229 to have a tendency to rotate in the open direction, and the first part 21 of the host 2 may rotate in the open direction to open relative to the second part 23.

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

[0244] As shown in FIG. 75, the other end of the elastic member 228 presses the bump alignment member 227, which in turn presses the spacer plate 222n.

[0245] Fig. 76 is a schematic diagram of the AA cross-sectional structure of Fig. 75. Fig. 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 in dashed lines. As shown in Fig. 76, the bump 227a is located on the chute 222q on the spacer plate 222n, and there is a certain distance between the bump 227a and the alignment groove 222p.

[0246] When the user presses the cap 251 of the opening button 25, the buckle 251e of the opening button 25 and the locking portion 213d of the first part 21 no longer form a buckle connection, and the first part 21 is no longer locked to the second part 23. In this case, the first part 21 starts a first rotational stroke segment.

[0247] As shown in FIG. 77 (in FIG. 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 below), the driven member 229 performs a compound motion under the cooperation of the elastic member 228 and the inclined surface 221k. The driven member 229 rotates in the opening direction and moves toward the second part 221b at the same time until the root part of the first inclined surface 229a (i.e., the end part of the first inclined surface 229a connected to the flat surface 229b) contacts the top of the inclined surface 221k and the flat surface 229b contacts the flat surface 221m (in the structural design, the effect of inertia on the position of the driven member 229 can be ignored). Referring to FIG. 73, when 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] 73 and 2, when the driven member 229, the shaft sleeve 222 and the first part 21 stop rotating, the first part 21 completes a first rotation stroke, and the first part 21 opens to the second part 23 by an angle a, where the angle a may be, for example, about 15°. It is easily understood that in the first rotation stroke segment, the first part 21 is rotationally driven by the shaft sleeve 222. Thus, the first part 21 rotates automatically, without the need for the user to apply an external force.

[0249] 76 and 78, in the first rotation stroke segment, as the shaft sleeve 222 rotates relative to the bump alignment member 227, the bump 227a of the bump alignment member 227 slides in the chute 222q and gradually approaches the alignment groove 222p. When the first rotation stroke segment is finished, each bump 227a may just reach the junction between the chute 222q and the alignment groove 222p (as shown in FIG. 78). In the first rotation stroke segment, the bump 227a always slides smoothly in the chute 222q, and no displacement (or impact) in the rotation shaft direction of the shaft sleeve 222 occurs between the bump alignment member 227 and the shaft sleeve 222, and the bump alignment member 227 does not impact the shaft sleeve 222. Therefore, even if the user touches the first portion 21, the user cannot experience any tactile feedback.

[0250] Alternatively, in another embodiment, the bump 227a may enter the alignment groove 222p when the first rotational stroke segment is completed. When the bump 227a enters the first alignment groove 222p from the chute 222q, a displacement in the rotational shaft direction 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 FIG. 77, after the first part 21 is opened by the angle a relative to the second part 23, the plane 229b comes into contact with the plane 221m, and the resultant force that the elastic member 228 and the first shaft 221 apply 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 only 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 may rotate the first part 21 in the opening direction. The first part 21 may rotate the shaft sleeve 222 in the opening direction, and further, the shaft sleeve 222 may rotate the driven member 229 in the opening direction. It is easily understood that the plane 229b comes into sliding contact with the plane 221m in the rotation process of the driven member 229. Therefore, the driven member 229 only rotates, and no displacement occurs in the axial direction of the main part 221g.

[0252] As shown in FIG. 79, the first portion 21 may complete the second stroke segment when the end of the flat surface 229b away from the first slope 229a contacts the top of the slope 221k (or when the top of the second slope 229c contacts the top of the slope 221k). As shown in FIG. 3, when the second stroke segment is completed, the first portion 21 opens by an angle b relative to the second portion 23, where the angle b may be, for example, about 75°. As described above, the second stroke segment requires the user to manually rotate the first portion 21.

[0253] 78 and 80, in the second rotation stroke segment, the bump 227a sequentially enters the alignment groove 222p. During the second rotation stroke segment, the bump 227a may slide from the alignment groove 222p into the chute 222q. In the second rotation stroke segment, when the bump 227a enters and leaves the alignment groove 222p, a displacement in the rotation shaft direction 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, the user may experience tactile feedback.

[0254] As shown in Fig. 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 rotation 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 given below.

[0255] As shown in FIG. 79 and FIG. 81, when the third stroke segment starts, the top of the second inclined surface 229c contacts the top of the inclined surface 221k. Under the cooperation of the elastic member 228 and the inclined surface 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 at the same time until the root portion of the second inclined surface 229c (i.e., the end of the second inclined surface 229c away from the flat surface 229b) contacts the top of the inclined surface 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] 83 and 84, the limiting protrusion 222r of the shaft sleeve 222 can enter the limiting groove 232h of the third host housing 232, and the limiting protrusion 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 portion 21 also stops rotating.

[0257] When the driven member 229, the shaft sleeve 222 and the first part 21 stop rotating, the first part 21 completes the third rotation stroke segment. As shown in FIG. 5, the first part 21 opens with respect to the second part 23 by an angle c, where the angle c may be, for example, about 90°. It is easily understood that in the third stroke segment, the first part 21 is rotationally driven by the shaft sleeve 222. Thus, the first part 21 rotates automatically, without the need for the user to apply an external force.

[0258] In this embodiment, the limiting groove 232h matches with the limiting protrusion 222r, which can provide motion limiting to the first part 21 through the third host housing 232. Since the third host housing 232 is larger (compared with the rotating shaft assembly 22) and has good structural strength, the assembly reliability of the limiting groove 232h and the limiting protrusion 222r is high, which helps to ensure the matching reliability of the host 2. Based on the actual requirements, it can be understood that in another embodiment, when the third stroke segment is finished, the first part 21 can stop rotating due to the matching 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 protrusion 222r on the shaft sleeve, and there is no need to provide the limiting groove 232h on the third host housing 232.

[0259] 80 and 82, in the third rotational stroke segment, the bump 227a smoothly slides within the chute 222q, no displacement occurs between the bump matching member 227 and the shaft sleeve 222 in the rotational shaft direction of 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 portion 21, the user cannot feel any tactile feedback.

[0260] 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 together with the first portion 21, so that the wound portion of the flexible circuit board 26 gradually loosens and the diameter of the wound portion gradually increases.

[0261] According to the above description of the opening process of the host 2, it is easy to understand that in the whole process of closing the opened first part 21, the first part 21 needs to be manually rotated in the opposite direction to the opening direction until the first part 21 is locked by the opening button. In the stroke where the opening angle of the first part 21 decreases from angle b to angle a, the bump alignment member 227 may impact the shaft sleeve 222 as the bump 227a slides in and out of each alignment groove 222p sequentially, thus there is a touch sense feedback. In another stroke, the bump alignment member 227 does not impact the shaft sleeve 222 as the bump 227a slides smoothly in the chute 222q, thus there is no touch sense feedback. In addition, in the process of closing the first part 21, the electrical connection end 261 of the flexible circuit board 26 rotates together with the first part 21, so that the winding part of the flexible circuit board 26 is gradually tightened and the diameter of the winding part may gradually become smaller.

[0262] According to the above description, it is easily understood that a cam mechanism is configured to open and close the host 2 by using an assembly structure including the first shaft 221 of the rotating shaft assembly 22, the driven member 229, the elastic member 228, and the shaft sleeve 222. The second shaft 223 of the rotating shaft assembly 22 is configured to have the flexible circuit board 26 attached and wound thereon. In this embodiment, the two shafts, i.e., 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 does not overlap with the axis of the second shaft 223). If no countermeasures are taken, stress will be generated when the rotating shaft assembly 22 performs mechanical motion, which may reduce the reliability of the rotating shaft assembly 22 and even generate 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 the assembly tolerance can be absorbed and the stress caused by eccentricity can be reduced or avoided.

[0264] Unlike this embodiment, in another embodiment, the first shaft and the second shaft may not be connected, and the end of the second shaft may not have a groove for receiving the end of the first shaft. Alternatively, in another embodiment, the design in which the flexible circuit board is wound around the shaft may not be required, and an integrated single shaft may be used instead of the first shaft 221 and the second shaft 223. In this case, the restricting member 226 may be canceled.

[0265] According to the above description, it is easy to understand that the assembly structure including the elastic member 228, the bump alignment member 227, and the shaft sleeve 222 of the rotating shaft assembly 22 is used to realize the touch sense feedback in the opening and closing process of the host 2. In another embodiment, the touch sense feedback design can be canceled. Specifically, the bump alignment member 227 and the chute 222q and the alignment groove 222p on the spacer plate 222n of the shaft sleeve 222 can be canceled. In this case, the elastic member may directly press the spacer plate 222n.

[0266] In this embodiment, when the shaft sleeve 222 rotates, the shaft contact member 224 attached to the shaft sleeve 222 rotates together 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 feed 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 antenna system of the host 2. The two power supply paths of the antenna system of the host 2 will be described below.

[0269] As shown in FIG. 70, the first frame body 213a may contact the power supply spring 212f of the first host circuit board assembly 212, thereby allowing a radio frequency signal to be supplied to the first frame body 213a via the power supply spring 212f. In addition, the first frame body 213a may contact the ground spring 212b, the ground spring 212c, the ground spring 212d, and the ground spring 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, the shaft contact member 224 on the shaft sleeve 222 contacts both the first shaft 221 and the second shaft 223, and the first shaft 221 and the second shaft 223 are both connected to the third host housing 232. Thus, a radio frequency signal can be transmitted from the first frame body 213a to the third host housing 232 through 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] It can be seen that the first host circuit board assembly 212 is connected to the first frame body 213a and the third host housing 232 via a physical mechanical structure to form a first feed path of the antenna system.

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

[0273] It can be seen that 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 of the antenna system.

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

[0275] It is easily understood that in another embodiment, the second power supply path may not be present. In other words, the first frame body 213a does not supply power to the third host housing 232 via coupling.

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

[0277] Earphones 3

[0278] In this embodiment, the structures of the first earphone 31 and the second earphone 32 may be completely identical. In the following, the first earphone 31 will be taken as an example for description.

[0279] 85 and 86 , first earphone 31 may include earplug 311, earplug support assembly 316, first electrode 312, earphone front housing assembly 313, second electrode 314, earphone rear housing assembly 315, and electronics assembly 317. Earplug support assembly 316 and first electrode 312 may both be attached to one end of earphone front housing assembly 313, and second electrode 314 and earphone rear housing assembly 315 may both be attached to the other end of earphone front housing assembly 313. Earplug 311 and earplug support assembly 316 are located at the same end of earphone front housing assembly 313, and earplug 311 is attached to the end of earplug support assembly 316 away from earphone front housing assembly 313. Electronic assembly 317 may be mounted in the space enclosed by earplug support assembly 316, first electrode 312, earbud front housing assembly 313, second electrode 314 and earbud rear housing assembly 315.

[0280] In the following, we 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 FIG. 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 generally octahedral appearance. The outer peripheral surface of the octahedron may include planes and arc surfaces. The planes and arc surfaces are alternately connected and arranged to form a circle (specifically, each plane is connected between two arc surfaces, and each arc surface is connected between two planes). The octahedral appearance of the first earphone 31 is a centrosymmetric shape. In another embodiment, the first earphone may alternatively have another centrosymmetric appearance shape. For example, the first earphone is generally cylindrical, tetrahedral, 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 planes facing each other on the first earphone 31.

[0283] Earphone Front Housing Assembly 313

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

[0285] As shown in FIG. 87 and FIG. 88, earphone front housing 313z may be a hollow tubular structure with openings at both ends. Earphone front housing 313z may include a first portion 313a, a second portion 313b, and a third portion 313c connected in series. The circumferential length of first portion 313a may be shorter than the circumferential length of second portion 313b, and the circumferential length of second portion 313b may be shorter than the circumferential length of third portion 313c. The circumferential length refers to the size in the direction of a centerline surrounding the tubular structure of earphone front housing 313z. Third portion 313c may be a generally octahedral tubular structure, and the wall of third portion 313c may include a flat portion and an arc-shaped portion. The flat portions and arc-shaped portions are alternately connected and arranged to form a circle (specifically, each flat portion is connected between two arc-shaped portions and each arc-shaped portion is connected between two flat portions).

[0286] As shown in FIG. 87 and FIG. 90, an end of first portion 313a remote from second portion 313b may form mounting groove 313f, which may surround a circle. A wall of earphone front housing 313z may further include sound pickup channel 313e, which may extend in a substantially straight line. One end of sound pickup channel 313e passes through a bottom surface of mounting groove 313f, and the other end of sound pickup channel 313e is connected to the internal cavity of earphone front housing 313z. Second portion 313b may include through hole 313d, which is connected to the internal cavity of earphone front housing 313z.

[0287] Noise Reduction Microphone Mesh 313j

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

[0289] Earphone magnet 313g

[0290] As shown in FIG. 89, earbud magnet 313g in this embodiment can be a single magnet. Earbud magnet 313g can have a single magnetic field direction. Alternatively, earbud magnet 313g can have at least two magnetic field directions, and earbud magnet 313g can form a Halbach array (which can be obtained by magnetizing different physical regions of a single magnet in different directions). For example, earbud magnet 313g is a Halbach array with two different magnetic field directions.

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

[0292] 89, earphone magnet 313g in this embodiment can be a generally curved plate-like structure that can be bent in a direction that surrounds the centerline of first earphone 31. The shape of earphone magnet 313g can be adapted to the shape of the inner wall of third portion 313c of earphone front housing 313z. Earphone magnet 313g can be secured to the inner wall of third portion 313c of earphone front housing 313z, for example, to the inner wall of the arc-shaped portion of third portion 313c.

[0293] 89, in this embodiment, there may be four earphone magnets 313g, which are equally spaced and evenly distributed on the inner wall of third section 313c, and one earphone magnet 313g is attached to the inner wall of the arc-shaped part of third section 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 be consistent.

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

[0295] Alternatively, for example, there may be three earbud magnets, each of which may be a bent structure surrounding the centerline of the first earbud, and these three earbud magnets may be spaced apart and distributed on the inner wall of the third portion of the earbud front housing. The three earbud magnets may be equally spaced and evenly distributed, or may be unequally spaced and unevenly distributed. In this design, the third portion of the earbud front housing may be a generally octahedral tubular structure or a generally cylindrical structure.

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

[0297] In this embodiment, to ensure that the magnet is attached accurately, an assembly jig may be used to assist in the attachment of earphone magnet 313g. According to product assembly requirements, earphone magnet 313g and earphone front housing 313z may be directly assembled, and the assembly jig may be customized based on this. Alternatively, as shown in FIG. 91, earplug support assembly 316, first electrode 312, etc. may be first attached to earphone front housing 313z to form intermediate assembly 200, and then earphone magnet 313g may be attached to earphone front housing 313z of 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 FIG. 91 and FIG. 92, to assemble the intermediate assembly 200, the present embodiment provides an assembly jig 100. 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 will be described in detail below). To facilitate removal, placement, and positioning of the intermediate assembly 200, a clamp 300 may be sleeved around the earphone front housing 313z in the intermediate assembly 200. The clamp 300 may be hoop-shaped, and the clamp 300 wraps around and clamps 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 FIG. 92, the assembly jig 100 of this embodiment may include a base 120, a jig magnet 130, and an upper cover 110.

[0300] 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 an upper cover positioning hole 121a. For example, there are two upper cover positioning holes 121a, and these two upper cover positioning holes 121a are located at both ends of the base plate 121. A work positioning groove 121c, a jig magnet mounting groove 121b, and a clamp accommodating groove 121e may be further provided in an area of ​​the base plate 121 (for example, the area on the right side of the perspective view in FIG. 93).

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

[0302] As shown in FIG. 93, the fixture magnet mounting groove 121b may be located outside the workpiece positioning groove 121c and may be connected to the workpiece positioning groove 121c. The fixture magnet mounting groove 121b may be considered to penetrate the side wall of the workpiece positioning groove 121c. The number of the fixture magnet mounting grooves 121b may match the number of the fixture magnets 130. For example, there are four fixture magnet mounting grooves 121b. The four fixture magnet mounting grooves 121b may be equally spaced around the workpiece positioning groove 121c.

[0303] 92 and 94, each of the jig magnet mounting grooves 121b can mount one jig magnet 130. The jig magnet 130 may include only a single magnet, or may be configured by connecting at least two single magnets.

[0304] 93, the clamp accommodating groove 121e may be located around the workpiece positioning groove 121c and may be connected to the workpiece positioning groove 121c. The clamp accommodating groove 121e may be located between the two jig magnet mounting grooves 121b.

[0305] As shown in FIG. 93, in another region of the base plate 121 (for example, the region on the left side of the perspective view of FIG. 93), the same work positioning groove 121c, the through hole 121d, the same jig magnet mounting groove 121b, the same Clamp The receiving groove 121e may be provided. With this design, the assembly jig 100 can simultaneously assemble two intermediate assemblies 200. The positioning groove 121c, the through hole 121d, the jig magnet mounting groove 121b and the clamp receiving groove 121e in the two regions of the base plate 121 may be located between the two upper cover positioning holes 121a.

[0306] As shown in FIGS. 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 top cover positioning rods 113, each located at both ends of the cover plate 111. A region of the cover plate 111 (e.g., the region on the right side of the perspective view of FIG. 95) may be provided with magnet arrangement through holes 111a. The number of magnet arrangement through holes 111a may match the number of earphone magnets 313g. For example, there may be four magnet arrangement through holes 111a. The four magnet arrangement through holes 111a may form an approximately 2×2 matrix.

[0308] The upper cover limiting rod 112 is disposed on a side surface of the cover plate 111 in the thickness direction, and the center of the upper cover limiting rod 112 may be located approximately between the four magnet arrangement through holes 111a. In addition, for each magnet arrangement through hole 111a and the upper cover limiting rod 112, a part of the protrusion of the upper cover limiting rod 112 in the axial direction of the magnet arrangement through hole 111a fits within the protrusion of the magnet arrangement through hole 111a in the axial direction of the magnet arrangement through hole 111a. In other words, as seen from FIG. 95, each magnet arrangement through hole 111a has a part of the upper cover limiting rod 112, and this part may be referred to as a limiting part. It is easily understood that the number of limiting parts is the same as the number of earphone magnets 313g. The shape of the upper cover limiting rod 112 may be adapted to the shape of the internal cavity of the earphone front housing 313z.

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

[0310] 95 and 96, the same magnet arrangement through-holes 111a and upper cover limiting rods 112 may be provided in another region of the cover plate 111 (for example, the region on the left side of the perspective view of FIG. 95). With this design, the assembly jig 100 can assemble two intermediate assemblies 200 simultaneously. The magnet arrangement through-holes 111a and upper cover limiting rods 112 in the two regions of the cover plate 111 may be located between two upper cover positioning rods 113.

[0311] The process of attaching four earphone magnets 313g to one intermediate assembly 200 using assembly jig 100 is outlined below with reference to FIGS.

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

[0313] 98, 96, and 97, the upper cover 110 is attached to the base 120 so that the cover plate 111 contacts the base 120. The upper cover positioning rod 113 is inserted into the upper cover positioning hole 121a, so that the upper cover magnet 114 magnetically attracts the base magnet 122. Referring to FIG. 96 and FIG. 91, in this case, the upper cover limiting rod 112 in the upper cover 110 is inserted into the internal cavity of the earphone front housing 313z. Referring to FIG. 99, 100, and FIG. 94, each magnet arrangement through hole 111a has a part of the work positioning groove 121c. In other words, the protrusions of different regions of the work positioning groove 121c in the axial direction of the magnet arrangement through hole 111a respectively enter each magnet arrangement through hole 111a. As viewed from FIG. 99 and FIG. 100, each magnet arrangement through hole 111a in the upper cover 110 has a part of the earphone front housing 313z. In other words, protrusions in different regions of earphone front housing 313z in the axial direction of magnet arrangement through-hole 111a each fit into each magnet arrangement through-hole 111a.

[0314] In addition, as shown in Fig. 100, a gap B is formed between each limiting portion of top cover limiting rod 112 and the inner wall of earphone front housing 313z (for simplicity, only one gap B is shown in the figure). Each gap B is used to attach one earphone magnet 313g. Near each gap B, there is one fixture magnet 130.

[0315] 101, four earphone magnets 313g are inserted into four gaps B from four magnet placement through-holes 111a, so that one earphone magnet 313g is located in each gap B, and each earphone magnet 313g is positioned at an attachment position within earphone front housing 313z. Jig magnets 130 near each gap B magnetically attract earphone magnets 313g in gaps B, so that earphone magnets 313g are held in an attachment position within earphone front housing 313z. This completes the pre-positioning of earphone magnets 313g.

[0316] Top cover 110 may then be removed to expose intermediate assembly 200 and earbud magnet 313g pre-positioned within intermediate assembly 200. Earbud magnet 313g may then be secured to the inner wall of earbud front housing 313z using an appropriate technique. For example, earbud magnet 313g may be bonded to the inner wall of earbud 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 base 120 can satisfactorily position intermediate assembly 200, the alignment structure including top cover 110 and base 120 can accurately limit the mounting space of earphone magnet 313g, and jig magnet 130 can simply and reliably hold earphone magnet 313g at the mounting position of earphone front housing 313z. Therefore, by using assembly jig 100, the assembly precision and reliability of earphone magnet 313g can be greatly improved, the assembly technique can be simplified, and good mass production can be realized.

[0318] First electrode 312

[0319] 102, the first electrode 312 may include an electrode body 312a and a conductive portion 312b. The electrode body 312a may be a generally ring structure surrounding the centerline of the first earphone 31. The conductive portion 312b may be generally cylindrical, and the conductive portion 312b may protrude from the inner surface of the electrode body 312a. The first electrode 312 may be made of a conductive material, for example a metal material.

[0320] 102 and 87, the first electrode 312 may be attached to the earbud front housing 313z. The electrode body 312a of the first electrode 312 is coincident with the second portion 313b of the earbud front housing 313z. The conductive portion 312b of the first electrode 312 passes through the through hole 313d of the earbud front housing 313z and is electrically connected to a circuit board (described below) of a first earbud circuit board assembly located in the interior cavity of the earbud front housing 313z, whereby the first electrode 312 is used as a charging electrode. A detailed assembly structure description is further provided below.

[0321] Earplug Support Assembly 316

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

[0323] As shown in FIG. 103 to FIG. 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 generally hollow tubular structure with openings at both ends. The first skirt edge 316v and the second skirt edge 316w may both be bosses protruding from the outer circumferential surface of the support 316u, and the first skirt edge 316v and the second skirt edge 316w may both surround the support 316u. The first skirt edge 316v and the second skirt edge 316w may both be located between both ends of the support 316u. There is a certain interval between the first skirt edge 316v and the second skirt edge 316w.

[0324] As shown in Fig. 106 and Fig. 103, the end of the support 316u close to the second skirt edge 316w may have a notch to form a generally C-shaped structure. This end of the support 316u may further have a forward vent 316x, which passes through the wall of the support 316u. The opening of the forward vent 316x in 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 FIG. 105, an end of the support 316u close to the first skirt edge 316v may form a mounting groove 316t, the bottom wall of which is provided with a through hole, which communicates with the internal cavity of the support 316u.

[0326] In this embodiment, the entire earplug support 316b may be made of a conductive material, or only a portion of the earplug support 316b may be made of a conductive material. The conductive material may be, for example, a metal. The earplug support 316b may house a speaker in the electronic assembly 317 (described below). Thus, the earplug support 316b may also be referred to as a voice-emitting mouth.

[0327] The front vent acoustic mesh 316a may be generally sheet-like and may include multiple layers of material, such as acoustic mesh and adhesive layers. A curved front vent acoustic mesh 316a is shown. As shown in FIG. 105, the front vent acoustic mesh 316a may include a fastening region 316z and a blocking region 316y. The fastening region 316z may be ring-like. The blocking region 316y may be a rectangular strip, and the blocking region 316y may be connected to the inside of the fastening region 316z. The blocking region 316y allows air and sound waves to pass through.

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

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

[0330] Speaker Mesh 316c

[0331] 105, the speaker mesh 316c may be generally sheet-like and may include multiple layers of material such as an acoustic mesh, an adhesive layer, and a PET sheet, etc. The speaker mesh 316c may be provided with multiple sound emission holes.

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

[0333] Based on product requirements, in another embodiment, the earplug support may have 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 the earplug support. For example, the front vent is provided in the first portion 313a of the earphone front housing 313z and connected to the sound pickup 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 earplug inner cover 311a and an earplug outer cover 311b, and the earplug inner cover 311a and the earplug outer cover 311b may be fixedly connected.

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

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

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

[0339] As shown in Fig. 109, a slot 311g may be further formed in the inner wall of the earplug inner cover 311a, the slot 311g may surround a circle, and the slot 311g may be spaced apart from the sound emitting through hole 311d. The slot 311g is configured to match with the first skirt edge 316v of the earplug support 316b, and the earplug inner cover 311a is attached to the earplug support 316b (the detailed 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 earplug inner cover 311a away from the sound emitting through hole 311d, and these second bumps 311c may be spaced apart from each other and surround a circle.

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

[0342] In this embodiment, the earplug inner cover 311a may be made of a harder material that is less likely to deform in order to form a secure connection to the earplug support 316b and to contain and protect the earplug support 316b. The earplug outer cover 311b may be made of a softer material that is more likely to deform in order to fit and conform to the ear canal.

[0343] Second electrode 314

[0344] As shown in FIG. 111, the second electrode 314 may include an electrode body 314a, an inner bearing pedestal 314b, and a conductive portion 314c. The electrode body 314a may be a generally ring structure surrounding the centerline of the first earphone 31. The inner bearing pedestal 314b may be located inside the electrode body 314a, and the inner bearing pedestal 314b may surround the electrode body 314a. The conductive portion 314c may be generally columnar, and the conductive portion 314c may be located inside the electrode body 314a and may protrude from the inner bearing pedestal 314b. The second electrode 314 may be made of a conductive material, for example a metal material.

[0345] 111 and 88, the second electrode 314 can be connected to the earbud front housing 313z. The electrode body 314a of the second electrode 314 is coincident with the third portion 313c of the earbud 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) within the second earbud circuit board assembly 317g, whereby the second electrode 314 is used as a separate charging electrode. A detailed assembly structure description is provided further below.

[0346] Earphone Rear Housing Assembly 315

[0347] 112, 113, and 114, earbud rear housing assembly 315 can include earbud rear housing 315a, first primary microphone mesh 315g, antenna 315f, rear housing support 315d, and second primary microphone mesh 315e. First primary microphone mesh 315g, antenna 315f, rear housing support 315d, and second primary microphone mesh 315e can all be housed inside earbud rear housing 315a.

[0348] As shown in FIG. 113, FIG. 114, and FIG. 115 (FIG. 115 is a schematic diagram of the AA cross-sectional structure of earphone rear housing 315a in FIG. 112), earphone rear housing 315a may be generally bowl-shaped. Earphone rear housing 315a may include bottom wall 315h and peripheral side wall 315i surrounding the periphery of bottom wall 315h, where peripheral side wall 315i and bottom wall 315h form an open cavity. Bottom wall 315h may be provided with sound pickup through-hole 315c, which is in communication with the internal cavity of earphone rear housing 315a. Peripheral side wall 315i may be provided with a plurality of wind noise prevention through-holes 315b, which are connected to the internal cavity of earphone rear housing 315a. For example, there may be two wind noise prevention through holes 315b, and the two wind noise prevention through holes 315b may be basically symmetrically distributed on both sides of the sound pickup through hole 315c. Alternatively, the number of wind noise prevention through holes 315b may be more than two, for example, three or four, and these wind noise prevention through holes 315b may be spaced apart.

[0349] Antenna 315f

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

[0351] 116, in the first implementation form of the present 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 an approximately curved, elongated strip-like structure.

[0352] As shown in FIG. 116, the first antenna branch 315z may include a first segment 315z3 and a second segment 315z4, and the first segment 315z3 and the second segment 315z4 are connected by bending. For example, the first segment 315z3 and the second segment 315z4 may be substantially 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 315z2. In other words, the tip 315z1 and the tail 315z2 are two opposite ends of the first antenna branch 315z, respectively. The first segment 315z3 may be substantially straight, and the second segment 315z4 may be bent.

[0353] Similarly, as shown in FIG. 116, the second antenna branch 315y may include a third segment 315y3 and a fourth segment 315y4, and the third segment 315y3 and the fourth segment 315y4 are connected by bending. For example, the third segment 315y3 and the fourth segment 315y4 may be substantially 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 315y2. In other words, the tip 315y1 and the tail 315y2 are two opposite ends of the second antenna branch 315y, respectively. The third segment 315y3 may be substantially straight, and the fourth segment 315y4 may be bent. As shown in Fig. 116, the first antenna branch 315z and the second antenna branch 315y may be essentially centrosymmetric. In other words, the first antenna branch 315z essentially overlaps with the second antenna branch 315y after rotating 180° around the center. For the entire area occupied by the first antenna branch 315z and the second antenna branch 315y, from the leading end 315z1 to the trailing end 315z2 of the first antenna branch 315z, the first antenna branch 315z is bent and extends along an outward-inward path (e.g., from the perspective of FIG. 116, the first antenna branch 315z is bent in a clockwise direction), and from the leading end 315y1 to the trailing end 315y2 of the second antenna branch 315y, the second antenna branch 315y is bent and extends along an outward-inward path (e.g., from the perspective of FIG. 116, the second antenna branch 315y is bent in a clockwise direction). The leading end 315z1 and the leading end 315y1 are on the outside, and the leading end 315z1 is away from the leading end 315y1. Both the tail end 315z2 and the tail end 315y2 are located between the tip end 315z1 and the tip end 315y1, the tail end 315z2 is adjacent to the tail end 315y2, and the tail end 315z2 and the tail end 315y2 are coupled, such that the antenna 315f operates in the 2.4G frequency band.

[0354] In the following description, tip 315z1 and tip 315y1 are both connected to a feed point on the circuit board of third earbud circuit board assembly 317h in electronic assembly 317, so that both first antenna branch 315z and second antenna branch 315y can transmit and receive signals. The two feed points may be symmetrical about the centerline of first earbud 31.

[0355] 116, 112, and 115, in implementation 1, antenna 315f may be disposed on the inner wall of earphone rear housing 315a, with both tip 315z1 and tip 315y1 being located on the inner surface of peripheral sidewall 315i of earphone rear housing 315a, and both tail end 315z2 and tail end 315y2 being located on the inner surface of bottom wall 315h of earphone rear housing 315a. For the first antenna branch 315z, the second segment 315z4 of the first antenna branch 315z may extend from the leading edge 315z1 to the trailing edge 315z2, approximately in the direction from the peripheral side wall 315i to the bottom wall 315h, and for the second antenna branch 315y, the fourth segment 315y4 of the second antenna branch 315y may also extend from the leading edge 315y1 to the trailing edge 315y2, approximately 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 using, for example, a laser direct structuring (LDS) technique. In other words, the antenna 315f may be, for example, an LDS antenna.

[0357] Due to the different wearing angles of the first earphone 31 in the ear canal, the first antenna branch 315z can be closer to the human body, and the second antenna branch 315y can be closer to the human body, resulting in degradation of the antenna performance of the antenna branch closer to the human body (e.g., reduced antenna efficiency), and thus degradation of the antenna signal quality.

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

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

[0360] According to the antenna 315f of this implementation, two antenna branches are designed which are distributed symmetrically around the center and work in a coupling manner, so that the antenna performance of the first earphone 31 can be ensured even when the user wears the first earphone 31 at different wearing angles, thereby ensuring the communication quality of the first earphone 31 and guaranteeing the user experience.

[0361] 117, in implementation form 2 of the present embodiment, the antenna 315f may include a first antenna branch 315x and a second antenna branch 315w. Each of the first antenna branch 315x and the second antenna branch 315w may be approximately a curved, elongated strip-like structure.

[0362] As shown in FIG. 117, the first antenna branch 315x may include a first segment 315x3 and a second segment 315x4, and the first segment 315x3 and the second segment 315x4 are connected by bending. For example, the first segment 315x3 and the second segment 315x4 may be substantially 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 315x2. In other words, the tip 315x1 and the tail 315x2 are two opposite ends of the first antenna branch 315x, respectively. The first segment 315x3 may be substantially straight, and the second segment 315x4 may be bent.

[0363] Similarly, as shown in FIG. 117, the second antenna branch 315w may include a third segment 315w3 and a fourth segment 315w4, and the third segment 315w3 and the fourth segment 315w4 are bent and connected. For example, the third segment 315w3 and the fourth segment 315w4 may be substantially 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 315w2. In other words, the tip 315w1 and the tail 315w2 are two opposite ends of the second antenna branch 315w, respectively. The third segment 315w3 may be substantially straight, and the fourth segment 315w4 may be bent.

[0364] As shown in FIG. 117, the first antenna branch 315x and the second antenna branch 315w may be essentially centrosymmetric.

[0365] Unlike in implementation form 1, in implementation form 2, in the entire area occupied by the first antenna branch 315x and the second antenna branch 315w, from the tip 315x1 to the tail end 315x2 of the first antenna branch 315x, the first antenna branch 315x is bent and extends along an inward-outward path (e.g., from the perspective of FIG. 117, the first antenna branch 315x is bent in a counterclockwise direction), and from the tip 315w1 to the tail end 315w2 of the second antenna branch 315w, the second antenna branch 315w is bent and extends along a path from inward to outward (e.g., from the perspective of FIG. 117, the second antenna branch 315w is bent in a counterclockwise direction). The leading edge 315x1, the trailing edge 315x2, the leading edge 315w1 and the trailing edge 315w2 are all on the outside. The leading edge 315x1 is close to the leading edge 315w1, and coupling occurs, so that the antenna 315f operates in the 2.4G frequency band.

[0366] 117, 112, and 115, in implementation 2, antenna 315f can be disposed on an inner wall of earbud rear housing 315a. Tip end 315x1 and tip end 315w1 can both be located on the inner surface of peripheral sidewall 315i of earbud rear housing 315a. Tail end 315x2 and tail end 315w2 can both be located on the inner surface of bottom wall 315h of earbud rear housing 315a and can be proximate peripheral sidewall 315i. Unlike in implementation form 1, for the first antenna branch 315x, the second segment 315x4 of the first antenna branch 315x may extend from the tip 315x1 to the tail end 315x2, approximately in the direction from the bottom wall 315h to the peripheral side wall 315i, and for the second antenna branch 315w, the fourth segment 315w4 of the second antenna branch 315w may also extend from the tip 315w1 to the tail end 315w2, approximately in the direction from the bottom wall 315h to the peripheral side wall 315i.

[0367] Implementation form 2 provides another topology structure of the antenna 315f to meet the antenna design requirements of the first earphone 31.

[0368] 118, in the third implementation of the present embodiment, the antenna 315f may include a first antenna branch 315u and a second antenna branch 315v. Each of the first antenna branch 315u and the second antenna branch 315v may be an approximately curved, elongated strip-like structure.

[0369] As shown in FIG. 118, the first antenna branch 315u may include a first segment 315u3 and a second segment 315u4, and the first segment 315u3 and the second segment 315u4 are bent and connected. For example, the first segment 315u3 and the second segment 315u4 may be substantially 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 315u2. In other words, the tip 315u1 and the tail 315u2 are two opposite ends of the first antenna branch 315u, respectively. The first segment 315u3 may be substantially straight, and the second segment 315u4 may be bent.

[0370] Similarly, as shown in FIG. 118, the second antenna branch 315v may include a third segment 315v3 and a fourth segment 315v4, and the third segment 315v3 and the fourth segment 315v4 are connected by bending. For example, the third segment 315v3 and the fourth segment 315v4 may be substantially 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 opposite ends of the second antenna branch 315v, respectively. The third segment 315v3 may be substantially straight, and the fourth segment 315v4 may be bent.

[0371] Unlike the implementation form 1, in the implementation form 3, for the entire area occupied by the first antenna branch 315u and the second antenna branch 315v, from the tip 315u1 to the tail end 315u2 of the first antenna branch 315u, the first antenna branch 315u is bent and extends along a path from outward to inward (for example, from the perspective of FIG. 118, the first antenna branch 315u is bent in a clockwise direction), and from the tip 315v1 to the tail end 315v2 of the second antenna branch 315v, the second antenna branch 315v is bent and extends along a path from outward to inward (for example, from the perspective of FIG. 118, the second antenna branch 315v is bent in a counterclockwise direction). The tip 315u1, the tip 315v1 and the tail end 315v2 are all on the outside, and the tail end 315u2 is on the inside. The tail end 315u2 is adjacent to the tip end 315v1 and coupling occurs, causing the antenna 315f to operate in the 2.4G frequency band.

[0372] 117, 112, and 115, in implementation 3, antenna 315f can be disposed on an inner wall of earbud rear housing 315a. Tip 315u1 and tip 315v1 can both be located on the inner surface of peripheral sidewall 315i of earbud rear housing 315a. Tail end 315u2 and tail end 315v2 can both be located on the inner surface of bottom wall 315h of earbud rear housing 315a, and tail end 315v2 can also be proximate to peripheral sidewall 315i. Unlike in implementation form 1, for the first antenna branch 315u, the second segment 315u4 of the first antenna branch 315u may extend approximately in the direction from the peripheral side wall 315i to the bottom wall 315h from the tip 315u1 to the tail end 315u2, and for the second antenna branch 315v, the fourth segment 315v4 of the second antenna branch 315v may extend approximately in the direction from the bottom wall 315h to the peripheral side wall 315i from the tip 315v1 to the tail end 315v2.

[0373] Implementation form 3 provides another topology structure of the antenna 315f to meet the antenna design requirements of the first earphone 31.

[0374] The above implementations list three topology structures and three coupling methods of the antenna 315f in outline. The embodiments of the present application are not limited thereto in practice. Another topology structure and coupling method of the antenna 315f may alternatively be designed based on product requirements. For example, from the tip to the tail, the second segment may extend approximately from the bottom wall 315h to the peripheral side wall 315i, and the fourth segment may extend approximately from the peripheral 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, so that the antenna 315f operates in a specific frequency band.

[0375] Above, the schematic topology structure of three types of antenna 315f has been described. In this embodiment, it can be understood that the specific structure of antenna 315f can be designed based on product requirements and is not limited to the above description. In the following, for ease of explanation, the antenna 315f in implementation form 1 is taken as an example to describe the contents related to antenna 315f.

[0376] 1st Primary Microphone Mesh 315g

[0377] The first primary microphone mesh 315g may be a generally circular sheet-like shape and may include several layers of materials, such as an acoustic mesh and an adhesive layer. With reference to FIG. 112 and FIG. 115, the first primary microphone mesh 315g may be fixedly connected to the bottom wall 315h of the earphone rear housing 315a. For example, an adhesive layer in the first primary microphone mesh 315g may be bonded to the bottom wall 315h. In addition, the first primary microphone mesh 315g covers the sound pickup through-hole 315c, and sound entering the sound pickup through-hole 315c may pass through the first primary microphone mesh 315g and enter the internal cavity of the earphone rear housing 315a.

[0378] Rear housing support 315d

[0379] 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 Primary Microphone Mesh 315e

[0381] As shown in FIG. 112, the second primary microphone mesh 315e may be a generally circular sheet-like shape and may include several layers of materials, such as an acoustic mesh, foam, and an adhesive layer. With reference to FIG. 112 and FIG. 119, the second primary microphone mesh 315e may be fixed to the side of the rear housing support 315d. For example, the adhesive layer in the second primary microphone mesh 315e may be bonded to the side of the rear housing support 315d. In addition, the second primary microphone mesh 315e covers the through-hole 315j, and the sound entering the through-hole 315j may pass through the second primary microphone mesh 315e.

[0382] FIG. 120 is a BB cross-sectional view of the earphone rear housing assembly 315 of FIG. 113, and FIG. 120 may represent an assembly structure of the earphone rear housing assembly 315. As shown in FIG. 120, the first main microphone mesh 315g may be fixed to the inner surface of the bottom wall 315h of the earphone rear housing 315a. With reference to FIG. 120 and FIG. 114, the first main microphone mesh 315g covers the sound pickup through-hole 315c (the sound pickup through-hole 315c is not shown in FIG. 120 due to the position of the cross-section in FIG. 113). The rear housing support 315d is mounted within the inner cavity of the earphone rear housing 315a, and there is a certain spacing between the rear housing support 315d and each of the bottom wall 315h and the first main microphone mesh 315g. Thus, rear housing support 315d and earphone rear housing 315a enclose wind noise prevention cavity 315k. Wind noise prevention through-hole 315b is connected to wind noise prevention cavity 315k.

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

[0384] The above has described in detail 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 in the first earphone 31. Below, the overall assembly structure including each component will be described.

[0385] Fig. 121 is a schematic diagram of the cross-sectional structure of the first earphone 31. Some of the structure is not shown due to the position selection of the cross section. Fig. 122 is a partially enlarged schematic diagram of position A of Fig. 121.

[0386] As shown in Fig. 121, first electrode 312 can be coincident with second portion 313b of earbud front housing 313z. With reference to Fig. 102 and Fig. 87, conductive portion 312b of first electrode 312 can extend through through-hole 313d on second portion 313b into the interior cavity of earbud front housing 313z.

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

[0388] As shown in FIG. 122, the earplug inner cover 311a may be sleeved around the earplug support 316b. Referring to FIG. 109 and FIG. 122, the slot 311g of the earplug inner cover 311a may match the first skirt edge 316v of the earplug support 316b, and there may be a certain distance between the end of the earplug inner cover 311a where the sound emitting through hole 311d is provided and the speaker mesh 316c on the earplug support 316b. The second bump 311c on the earplug inner cover 311a contacts the second skirt edge 316w of the earplug support 316b, which may create a gap between the earplug inner cover 311a and the second skirt edge 316w, preventing the earplug inner cover 311a from blocking the front vent 316x near the second skirt edge 316w. It may be appreciated that the second bumps 311c may be staggered with the front vents 316x to prevent the second bumps 311c from blocking the front vents 316x.

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

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

[0391] In this embodiment, earplug support assembly 316, earbud front housing assembly 313, second electrode 314 and earbud rear housing assembly 315 may surround an interior cavity of first earbud 31, with electronic assembly 317 housed in the interior cavity.

[0392] In this embodiment, after the first earphone 31 is placed in a predetermined position in the third receiving groove 231f, the first electrode 312 can contact the first charging spring 231e in the third receiving groove 231f, and the second electrode 314 can contact the second charging spring 231c, so that the host 2 charges the first earphone 31. Because the first electrode 312 and the second electrode 314 are in a 360-degree closed ring structure, no matter what angle the first earphone 31 is placed in the third receiving groove 231f, the first electrode 312 can always contact the first charging spring 231e, and the second electrode 314 can always contact the second charging spring 231c, ensuring that the host 2 charges the first earphone 31. Such a structure of the first electrode 312 and the second electrode 314 allows the user to freely place the first earphone 31 in the third housing groove 231f, thereby improving the user experience.

[0393] It is easily understood that in another embodiment, one of the first electrode and the second electrode has a 360-degree closed ring structure, and the other electrode is not 360-degree closed but forms an open ring structure. In this way, it is also guaranteed that the first earphone is randomly placed within a certain angle range, provided that the first earphone is rechargeable.

[0394] For example, in the case of the first earphone 41 shown in FIG. 123, the first electrode 411 still has a 360-degree closed ring structure, but there are two or more second electrodes 412, the second electrodes 412 are spaced apart, and the second electrodes 412 may be distributed on the same circle. Each second electrode 412 may be an open ring structure. Alternatively, in another embodiment, there is a single second electrode 412, and the second electrode 412 is an open ring structure with a notch. For example, the enveloping 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 each of the first and second electrodes is 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 number of the other electrode is at least two, and the 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 may also ensure that the first earphone can be randomly placed within a certain angle 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 realize 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 a communication electrode of the first earphone 31 to realize communication between the first earphone 31 and the host 2.

[0397] Unlike this embodiment, in another embodiment, as shown in FIG. 124, the first earphone 51 has a first electrode 511 and a second electrode 512, 511 And the second electrode 512 may be dedicated to realize charging of the first earphone 51 by the host. In addition, the first earphone 51 further has a communication electrode 513, which is dedicated to communication with the host. The first electrode shown in FIG. 511 Although the first electrode 512 and the second electrode 513 each have a 360-degree closed ring structure, it can be understood that this is only an example. 511 , the structure, number and distribution of the second electrode 512 and the communication electrode 513 can all be designed based on product requirements.

[0398] Electronic Assembly 317

[0399] 125 and 126 each show a schematic structure of the electronic assembly 317 according to the present embodiment. It can be understood that the structure of the electronic assembly 317 described below is merely an example and does not limit the embodiments of the present application.

[0400] 125 and 126, electronic assembly 317 can include first earphone circuit board assembly 317e, second earphone circuit board assembly 317g, third earphone circuit board assembly 317h, flexible circuit board 317j, speaker 317a, wearing detection plate 317b, secondary microphone 317k, earphone battery 317f, and primary microphone 317i.

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

[0402] First earphone circuit board assembly 317e, second earphone circuit board assembly 317g, and third earphone circuit board assembly 317h are stacked and spaced apart in sequence, and the three are electrically connected via flexible circuit board 317j. First earphone circuit board assembly 317e, second earphone circuit board assembly 317g, and third earphone circuit board assembly 317h may each include a circuit board and circuits and components disposed on the circuit board.

[0403] For example, a wearing detection sensor may be disposed on the circuit board of the first earphone circuit board assembly 317e, and the wearing detection sensor is configured to perform wearing detection of the first earphone 31. The wearing detection sensor may include, for example, at least one of a gravity sensor (G-sensor), an inertial measurement unit (IMU) sensor, a bone conduction sensor, an infrared radiation (IR) sensor, a voice accelerometer (VACC), a voice pickup unit (VPU), etc. A magnetic field sensor may be disposed on the circuit board of the first earphone circuit board assembly 317e, and the magnetic field sensor is configured to detect a change 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 is, for example, a Hall effect sensor or a magnetometer. For example, there may be two magnetic field sensors. For example, charging and discharging circuitry can be disposed on the circuit board of second earphone circuit board assembly 317g. For example, radio frequency circuitry can be disposed on the circuit board of third earphone circuit board assembly 317h.

[0404] Speaker 317a

[0405] 126, speaker 317a can be electrically connected to the circuit board of first earphone circuit board assembly 317e. Speaker 317a can be located on a side of first earphone circuit board assembly 317e away from second earphone circuit board assembly 317g.

[0406] Installation detection plate 317b

[0407] As shown in FIG. 125 and FIG. 126, the wearing detection plate 317b may include a connected plate 317c and a connecting pin 317d, and the connecting pin 317d may be derived from the plate 317c and electrically connected (e.g., soldered) to a 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 wearing detection plate 317b may be electrically conductive and may be made of, for example, a metal material. When the wearing detection plate 317b is close to the human body, a coupling capacitance may occur. When the distance between the wearing detection plate 317b and the human body changes, the coupling capacitance value changes. The wearing detection of the first earphone 31 may be realized through detection and processing of the coupling capacitance value of the wearing detection plate 317b.

[0408] Sub microphone 317k

[0409] As shown in FIG. 125 and FIG. 126, the secondary microphone 317k may be disposed on a 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 secondary microphone 317k may be disposed on the circuit board of the first earphone circuit board assembly 317e. A through hole may be provided in a portion of the circuit board of the first earphone circuit board assembly 317e that corresponds to the secondary microphone 317k, and sound may be picked up by the secondary microphone 317k through the through hole. The secondary microphone 317k may be configured to achieve noise reduction and may be further configured to perform wearing detection.

[0410] Earphone Battery 317f

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

[0412] Primary Microphone 317i

[0413] 125 and 126, primary microphone 317i may be located between second earphone circuit board assembly 317g and third earphone circuit board assembly 317h and may be electrically connected to the circuit board of third earphone circuit board assembly 317h. Primary microphone 317i may be disposed on the circuit board of third earphone circuit board assembly 317h. A through hole may be provided on the circuit board of third earphone circuit board assembly 317h at a position corresponding to primary microphone 317i, and human voice may be picked up by primary microphone 317i through the through hole.

[0414] Fig. 127 shows an assembly structure including the electronic assembly 317 and other components of the first earphone 31. Fig. 128 is a partial enlarged schematic view at position A in Fig. 127, and Fig. 129 is a partial enlarged schematic view at position B in Fig. 127.

[0415] As shown in FIG. 127 , electronic assembly 317 can be housed within an interior cavity surrounded by earplug support assembly 316, earbud front housing assembly 313, second electrode 314 and earbud rear housing assembly 315.

[0416] As shown in FIG. 128, at least a part of the speaker 317a may be located in the inner cavity of the earplug support 316b. The 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 in the inner cavity of the earplug support 316b is in equilibrium with the external atmospheric pressure, so that the speaker 317a can 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 FIG. 128, the plate 317c of the fit detection plate 317b may be fixedly connected (e.g., soldered) to the end of the earplug support 316b remote from the speaker mesh 316c, and the fit detection plate 317b and the earplug support 316b may be connected to form a large area conductor. Thus, both the fit detection plate 317b and the earplug support 316b may generate a coupling capacitance, which allows the fit detection plate 317b and the earplug support 316b to be used for fit detection. In other words, in addition to providing a support and containment function, the earplug support 316b may also be reused as a detection plate for fit detection.

[0418] It can be understood that based on product requirements, the assembly structure including the fit detection plate and the earplug support may alternatively be in another form and is not limited to the above description. For example, if only a part of the earplug support is made of a conductive material, the fit detection plate may be fixedly connected to the part of the earplug support, and the assembly structure including the fit detection plate and the earplug support may be designed based on the respective structures of the fit detection plate and the earplug support and the internal space of the first earphone.

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

[0420] In addition, when the earplug support 316b is made of a high-strength material such as metal, the thickness and overall structural dimensions of the earplug support 316b can be small, provided that the structural strength of the earplug support 316b meets the requirements, so that the earplug outer cover 311b has sufficient compression deformation space, thereby ensuring the wearing comfort of the user.

[0421] In this embodiment, for example, the wearing detection sensor, the wearing detection plate 317b and the earplug support 316b may be used together to perform the wearing detection. This design can greatly improve the consistency and reliability of the wearing detection and reduce the probability of false detection.

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

[0423] As shown in Fig. 128, first earbud circuit board assembly 317e can be located in earbud front housing 313z. With reference to Figs. 102, 87, 88, and 128, conductive portion 312b of first electrode 312 can pass through through hole 313d in earbud front housing 313z and be electrically connected (e.g., soldered) to the circuit board of first earbud circuit board assembly 317e, such that first electrode 312 is used as a charging electrode.

[0424] As shown in FIG. 128, the side of the circuit board of the first earphone circuit board assembly 317e may be attached to the noise reduction microphone mesh 313j. The secondary microphone 317k may be disposed on the opposite side of the circuit board, and the secondary microphone 317k may correspond to the noise reduction microphone mesh 313j. The noise in the ear canal may pass 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 in sequence, and may be picked up by the secondary microphone 317k. The speaker 317a may generate a phase-inverted signal that is inversely phase with the phase of the noise signal, and the phase-inverted signal may cancel the noise signal. In this way, the first earphone 31 may realize active noise reduction.

[0425] When the first earphone 31 is in operation, the sound of the speaker 317a and the noise in the ear canal may pass through the front vent acoustic mesh 316a and leak out from the front vent 316x. In this way, the pressure inside and outside the ear canal can be balanced, and the user's wearing comfort can be improved. 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 is less than 0.22 mm.

[0426] In addition, the secondary microphone 317k may also be used for wearing detection, the principle being that the speaker 317a transmits a sound signal of a specific frequency. When the user is not wearing the first earphone 31, a large amount of sound signal may leak out from the front vent 316x to the outside, and the signal strength of the sound signal picked up by the secondary microphone 317k is low. When the user is wearing the first earphone 31, the front vent 316x is partially or completely blocked, so that the secondary microphone 317k can pick up more sound signal, and the signal strength of the sound signal picked up by the secondary microphone 317k is high. Therefore, whether the user is wearing the first earphone 31 may be determined by detecting the signal strength of the signal picked up by the secondary microphone 317k.

[0427] 129, second earbud circuit board assembly 317g can be located inside second electrode 314. With reference to FIGS. 111 and 129, conductive portion 314c of second electrode 314 can be electrically connected (e.g., soldered) to the circuit board of second earbud circuit board assembly 317g, whereby second electrode 314 is used as a charging electrode.

[0428] As shown in FIG. 129, third earphone circuit board assembly 317h may be supported on rear housing support 315d. Referring to FIG. 129 and FIG. 120, the side of third earphone circuit board assembly 317h away from primary microphone 317i may be attached to second primary microphone mesh 315e. Primary microphone 317i may correspond to second primary microphone mesh 315e. Sound emitted by the user may pass through sound pickup through-hole 315c, first primary microphone mesh 315g, through-hole 315j on rear housing support 315d, second primary microphone mesh 315e, and through-hole corresponding to primary microphone 317i on the circuit board of third earphone circuit board assembly 317h, and may be picked up by primary microphone 317i.

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

[0430] 116 and 129, tip 315z1 and tip 315y1 of antenna 315f are respectively connected, e.g., soldered, to feed points on the circuit board of third earphone circuit board assembly 317h. The two feed points may be symmetrical about the centerline of 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 an earphone, the wearable device 1 may have the following features and functions: Some of the features or functions of both the host 2 and the earphone are completely consistent between the first earphone (e.g., the first earphone 31, the first earphone 41, the first earphone 51) and the second earphone, so for simplicity, the first earphone 31 will be mainly taken as an example to be described.

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

[0434] 1 and 4, in this embodiment, when the host 2 is in a closed state, the first earphone 31 is accommodated in a space surrounded by the first accommodating groove 213y of the first part 21 and the third accommodating groove 231f of the second part 23.

[0435] 130 shows a side view of the positional relationship between the first host mounting magnet 213r2 of the first portion 21, the second host mounting magnet 231v of the second portion 23, and the earphone magnet 313g of the first earphone 31 when the host 2 is in the closed state. As shown in FIG. 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 between the first host mounting magnet 213r2 and the earphone magnet 313g is large, and the magnetic field of the second host mounting magnet 231v is weak, and the magnetic attraction between the second host mounting magnet 231v and the earphone magnet 313g is small. Please refer to Figures 1 to 4. When the host 2 gradually opens from the closed state, the magnetic attraction of the first host mounting magnet 213r2 is greater than the magnetic attraction of the second host mounting magnet 231v, so the first earphone 31 is attached to the first part 21 and rotates together with the first part 21 relative to the second part 23.

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

[0438] As shown in FIG. 131, in the first implementation of the present embodiment, each first host mounting magnet 213r2 is a Halbach array formed by joining two single magnets, and the magnetic field directions (represented by arrows pointing from N to S) of the two single magnets are different, so that each first host mounting magnet 213r2 has two magnetic field directions. With reference to FIG. 131 and FIG. 130, in each first host mounting magnet 213r2, the magnetic field direction of one single magnet (e.g., the single magnet at the top of FIG. 131) points approximately from the radial outside to the radial inside of the first earphone 31, and the magnetic field direction of the other single magnet (e.g., the single magnet at the bottom of FIG. 131) points approximately from the radial inside to the radial outside of the first earphone 31.

[0439] As shown in FIG. 131, each earbud magnet 313g may be a Halbach array formed by a single magnet, and different portions of each earbud magnet 313g may have different magnetic field directions. With reference to FIG. 131 and FIG. 130, generally, the magnetic field direction of a portion Q1 of each earbud magnet 313g points approximately from the radially outer side to the radially inner side of the first earbud 31, and the magnetic field direction of the other portion Q2 points approximately from the radially inner side to the radially outer side of the first earbud 31. A design in which each earbud magnet 313g is a single magnet can reduce the difficulty of assembling the earbud magnet 313g. In another implementation, each earbud magnet 313g may alternatively be formed by joining multiple (e.g., two) single magnets.

[0440] Due to the design of the first host mounting magnet 213r2 and the earbud magnet 313g, the first host mounting magnet 213r2 can magnetically attract the earbud magnet 313g. In addition, product verification shows that this design allows for a large magnetic attraction force between the first host mounting magnet 213r2 and the earbud magnet 313g.

[0441] Unlike the implementation form 1, in the implementation form 2 of the present embodiment, as shown in FIG. 132, each first host-mounted magnet 213r2 is a Halbach array with four magnetic field directions. Each first host-mounted magnet 213r2 may be formed by joining four single magnets, or may be a single magnet with four magnetic field directions. The magnet design in the implementation form 2 can meet the design requirement that the first earphone 31 magnetically attracts the first portion 21.

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

[0443] Unlike in the implementation form 1, in the implementation form 4 of the present embodiment, as shown in FIG. 134, each first host mounting magnet 213r2 is a Halbach array with three magnetic field directions. Each first host mounting magnet 213r2 may be formed by joining three single magnets, or may be a single magnet with 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 the first host mounting magnet 213r2 can magnetically attract, 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 may magnetically attract the first host mounting magnet 213r2. The magnet design in implementation form 4 not only meets the design requirement that the first earphone 31 magnetically attracts the first portion 21, but also has a simple design structure, is easy to manufacture, and has a low cost.

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

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

[0446] In the above-mentioned implementation, the magnet design of the first host mounting magnet 213r2 and the earphone magnet 313g has been described. In practice, the magnet design of the second host mounting magnet 231v and the earphone magnet 313g can also be performed with reference to the above-mentioned principles, provided that the magnetic field strength of the second host mounting magnet 231v is smaller than that of the first host mounting magnet 213r2.

[0447] From the above description, it can be understood that, based on product requirements, in another embodiment, the magnetic field strength of the first host mounting magnet 213r2 may alternatively be smaller than that of the second host mounting magnet 231v, so that after the host 2 is opened, the first earphone 31 is not sucked up into the first part 21, but is still accommodated in the second part 23. Alternatively, the first part of the host may not have a first accommodation groove, 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 in the first portion 21, the first earphone 31 automatically stays in place.

[0449] As shown in FIG. 137, FIG. 138, and FIG. 139, after the host 2 is opened and the first earphone 31 is taken out of the host 2, the user may take the first earphone 31 in his / her hand, place the first earphone 31 in a position that is substantially aligned with the first accommodating groove 213y (specifically, the earplug 311 of the first earphone 31 substantially faces the end of the first accommodating groove 213y configured to accommodate the earplug 311, the earphone rear housing assembly 315 of the first earphone 31 substantially faces the end of the first accommodating groove 213y configured to accommodate the earphone rear housing assembly 315, and the first earphone 31 rotates an arbitrary angle around the center line of the first accommodating groove 213y), and then bring the first earphone 31 close to the first accommodating groove 213y. Due to the magnetic attraction force of the first host mounting magnet 213r2 in the first part 21 against the earphone magnet 313g of the first earphone 31, the first earphone 31 is corrected to a posture that matches the first housing groove 213y, and is automatically attracted to the first housing groove 213y, so that the first earphone 31 can be accurately and appropriately positioned in the first housing groove 213y.

[0450] According to the automatic in-position design in the present embodiment, the user can conveniently place the first earphone 31 on the host 2, and the placement can be completed without 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 is less likely to be separated from the second part 23.

[0452] When the user places the first earphone 31 in 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 of the second host mounting magnet 231v in the second part 23 to 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 in the third accommodating groove 231f can apply a certain extrusion pressure to the first earphone 31, which can increase the friction between the first earphone 31 in the second part 23 and the second host housing 231, so that the first earphone 31 is not easily removed from the third accommodating groove 231f.

[0454] 4. The first earphone 31 may be positioned at a random angle within the receiving groove.

[0455] In this embodiment, the first earphone 31 can overlap with the first earphone 31 every time the first earphone 31 rotates a certain angle around the center line of the first earphone 31. Therefore, the rotated first earphone 31 can always be accurately accommodated in the first accommodating groove 213y or the third accommodating groove 231f and can fit the inner wall of the first accommodating groove 213y or the third accommodating groove 231f. This allows the user to place the first earphone 31 in the first accommodating groove 213y or the third accommodating groove 231f without holding the first earphone 31 at a certain angle.

[0456] For example, in the case of the first earphone 31 which is a substantially octahedron, the first earphone 31 can overlap the first earphone 31 every time the first earphone 31 is rotated 90° around the center line of the first earphone 31. Even if the user rotates the first earphone 31 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 placed in the first housing groove 213y or the third housing groove 231f. 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, so even if the user randomly rotates the first earphone 31 (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 a normal angle. This allows the first earphone 31 to be smoothly and accurately placed in the first housing groove 213y and to fit the inner wall of the first housing groove 213y.

[0457] For example, in the case of the first earphone 31 having a substantially cylindrical shape, the first earphone 31 can overlap the first earphone 31 after being rotated by any angle around the center line of the first earphone 31. Therefore, no matter what angle the user rotates the first earphone 31, the first earphone 31 can still fit into the inner wall of the first housing groove or the third housing groove. In this way, the first earphone 31 can be smoothly and accurately placed in the first housing groove or the third housing groove.

[0458] 5. Host 2 open / close detection

[0459] As shown in FIG. 140, the first part 21 of the host 2 has a magnetic field sensor 212g (sometimes referred to as a first magnetic field sensor), which may be disposed, for example, on a circuit board 212a in the first part 21. The magnetic field sensor 212g is configured to detect 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 212g may be directly proportional to the distance between the magnetic field sensor 212g and the state detection 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 in a fully open state, 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 a change in magnetic flux. When the Hall effect sensor detects that the magnetic flux exceeds the hardware threshold of the Hall effect sensor, the Hall effect sensor can generate a corresponding signal and report the signal to the processor of the host 2. The processor of the host 2 may perform corresponding processing based on the signal of the Hall effect sensor. Unlike the Hall effect sensor, the magnetometer can detect the value of the magnetic flux and report the value to the processor of the host 2. The processor of the host 2 may determine whether the magnetic flux detected by the magnetometer exceeds a software threshold built into the processor, and perform corresponding processing based on the determination result. The following description uses an example in which the magnetic field sensor 212g is a Hall effect sensor.

[0461] As shown in FIG. 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 becomes less than a first threshold, a first signal may be generated. The processor of the host 2 determines that the host 2 is in the open state based on the first signal.

[0462] Conversely, when the host 2 gradually closes from the 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 becomes greater than the second threshold, a second signal may be generated. The processor of the host 2 determines that the host 2 is in the closed state based on the second signal.

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

[0464] In this embodiment, when the host 2 is in the open state and it is determined that the first earphone 31 is in the third receiving groove 231f (hereinafter, a method for detecting whether the first earphone 31 is in the third receiving groove 231f will be described), the communication electrode of the host 2 may send a signal to the communication electrode of the first earphone 31 to wake up the first earphone 31. When the host 2 is in the closed state and it is determined that the first earphone 31 is in 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 interchanged. 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. Detecting In-Box / Out-of-Box Status of First Earphone 31

[0466] The in-box / out-of-box state of the first earphone 31 refers to the relative positional relationship between the first earphone 31 and the first accommodating groove 213y and the relative positional relationship between the first earphone 31 and the third accommodating groove 231f, and includes a plurality of positional states, such as a state in which the first earphone 31 is in the first accommodating groove 213y and in the third accommodating groove 231f (a state in which the host 2 is closed and the first earphone 31 is in the host 2), a state in which the first earphone 31 is located in the first accommodating groove 213y and outside the third accommodating groove 231f (a state in which the host 2 is open and the first earphone 31 is attached to the first part 21), or a state in which the first earphone 31 is located in the third accommodating groove 231f and outside the first accommodating groove 213y (a state in which 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 the in-box / out-of-box state of the first earphone 31. The following will explain each step in turn.

[0468] (1) The host 2 detects the in-box / out-of-box state of the first earphone 31.

[0469] As shown in FIG. 141, the second part 23 of the host 2 has a magnetic field sensor 237 and a magnetic field sensor 238 (both of which may be referred to as second magnetic field sensors and are shown by dashed boxes). The magnetic field sensor 237 may be proximate to an outer surface of the groove wall of the third receiving groove 231f, and the magnetic field sensor 238 may be proximate to an outer surface of the groove wall of the fourth receiving groove 231g. The magnetic field sensor 237 and the magnetic field sensor 238 may each be, for example, a single-axis Hall effect sensor or a magnetometer. In the following, an example will be described in which the magnetic field sensor 237 and the magnetic field sensor 238 are each a Hall effect sensor.

[0470] The magnetic field sensor 237 is configured to detect a change 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 receiving groove 231f (when the host 2 is closed and the first earphone 31 is in 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 left the third receiving groove 231f and attached to the first part 21, 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 value. The processor of the host 2 determines that the first earphone 31 is located in the third receiving groove 231f based on the third signal.

[0472] In this embodiment, the processor of the host 2 may determine the in-box / out-of-box state of the first earphone 31 by combining the third signal transmitted by the magnetic field sensor 237 with the first signal or the 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 the 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 the host 2 is closed and the first earphone 31 is inside the host 2.

[0473] When the magnetic flux detected by the magnetic field sensor 237 is less than the third threshold but greater than or equal to the fourth threshold, a fourth signal may be generated. The processor of the host 2 determines, based on the fourth signal, that the first earphone 31 has left the third receiving groove 231f and is attached to the first portion 21 (FIG. 141).

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

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

[0476] In another embodiment, at least one of the magnetic field sensor 237 and the magnetic field sensor 238 may alternatively be 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, adjacent to the outer surface of the groove wall of the first receiving groove 213y). The change in magnetic flux of the earphone magnet 313g of the first earphone 31 may be detected via the magnetic field sensor 237, and it may be determined whether the first earphone 31 is in the first receiving groove 213y or outside the first receiving groove 213y. The specific principle is the same as above. A detailed description is omitted here.

[0477] In this embodiment, when the host 2 determines that the first earphone 31 is in the third receiving groove 231f and the host 2 is in an open state, the communication electrode of the host 2 may send a signal to the communication electrode of the first earphone 31 to wake up the first earphone 31. The host 2 may further charge the first earphone 31 through the first charging spring 231e and the second charging spring 231c. In addition, the host 2 may further activate a charging overheating protection mechanism (described below). Based on product requirements, alternatively, the first earphone 31 may not need to be charged and the charging overheating protection mechanism may not be activated.

[0478] In this embodiment, when the host 2 determines that the first earphone 31 is in the host 2 and the host 2 is in a closed state, the host 2 may activate a foreign object detection mechanism (described below), and further charge the first earphone 31 and activate a charging overheating protection mechanism. Based on product requirements, alternatively, the first earphone 31 may not need to be charged, and the charging overheating protection mechanism may not be activated.

[0479] In another embodiment, when the host 2 determines that the first earphone 31 is in the first receiving groove 213y and the 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 the in-box / out-of-box state of the first earphone 31.

[0481] As shown in FIG. 142, the first earphone 31 may have a magnetic field sensor 317z (sometimes referred to as a third magnetic field sensor and represented by a dashed box), which may be disposed, for example, on a 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. In the following, an example in which the magnetic field sensor 317z is a Hall effect sensor will be described.

[0482] The magnetic field sensor 317z is configured to detect a change in the magnetic flux of the status detection magnet 231x in the second part 23 of the host 2. The magnetic flux of the status detection magnet 231x detected by the magnetic field sensor 317z is directly proportional to the distance between the magnetic field sensor 317z and the status detection magnet 231x. When the first earphone 31 is located in the third receiving groove 231f (which may be when the host 2 is closed and the first earphone 31 is in 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 leaves the third receiving groove 231f and is attached to the first part 21, the magnetic flux detected by the magnetic field sensor 317z is small.

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

[0484] In this embodiment, the controller (which may be a central processing unit or microcontroller unit (MCU)) of the first earphone 31 may determine the in-box / out-of-box state of the first earphone 31 by combining the sixth signal transmitted by the magnetic field sensor 317z with the first signal or the second signal transmitted by the magnetic field sensor 212g (the first signal and the second signal may be transmitted via the communication electrode of the host 2 and the communication electrode of the first earphone 31). For example, when the controller receives the sixth signal and the first signal, the controller determines that the host 2 is open and the first earphone 31 is attached to the second part 23. When the controller receives the sixth signal and the second signal, the controller 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 less than the fifth threshold but greater than or equal to the sixth threshold, a seventh signal may be generated. The controller of the first earphone 31 determines, based on the seventh signal, that the first earphone 31 is attached to the first part 21 away from the third housing groove 231f.

[0486] As shown in FIG. 142, the second earphone 32 may also have a magnetic field sensor 327z (represented by a dashed box) configured to detect changes in the magnetic flux of the magnet 231w in the second portion 23. The magnetic field sensor 327z may be, for example, a single-axis Hall effect sensor. As described above, the second earphone 32 may determine an in-box / out-of-box state of the second earphone 32 using a signal transmitted by the magnetic field sensor 327z or by combining signals transmitted by the magnetic field sensor 327z and the magnetic field sensor 212g.

[0487] In this embodiment, the first earphone 31 detects the in-box / out-of-box status of the first earphone 31, so that the first earphone 31 performs a corresponding operation.

[0488] When the host 2 is in a closed state and the first earphone 31 detects that the first earphone 31 is located in the third receiving 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 the first earphone 31 is located in the third receiving 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 in an open state and the first earphone 31 is attached to the first part 21, the detection signal of the magnetic field sensor 317z activates the control unit of the first earphone 31 to wake 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, which can avoid the risks caused when detection is performed only by the host 2 or only by the first earphone 31 (for example, when detection is performed only by the host 2, the in-box / out-of-box state of the first earphone 31 cannot be accurately detected when the host 2 is powered off), and can ensure the reliability of the detection of 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 or solid or semi-solid dirt) enters the third housing groove 231f of the host 2, the surfaces of the host 2 and the first earphone 31 may become dirty, corrode, rust, or even cause a functional abnormality, which may affect 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 abnormality (or a communication abnormality).

[0494] Taking this into consideration, as shown in Figure 143, a foreign object detection spring 231d is further disposed in a third receiving groove 231f so as 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, and the second charging spring 231c comes into contact with a foreign object, the waveform of the charging signal of the 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 the charging circuit of the host 2 changes. A charging signal with such a waveform change is sometimes called an abnormal charging signal. Even 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 the host 2 does not change. A charging signal with such a waveform that does not change is sometimes called a normal charging signal.

[0496] When only one of the first charging spring 231e, the second charging spring 231c, and the foreign object detection spring 231d contacts a foreign object, or when none of the first charging spring 231e, the second charging spring 231c, and the foreign object detection spring 231d contacts a 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 the host 2 may determine whether a foreign object has entered the third accommodating groove 231f based on the type of the charging signal. For example, if the charging signal is determined to be an abnormal charging signal, the processor determines that a foreign object has entered the third accommodating groove 231f. Conversely, if the charging signal is determined to be a normal charging signal, the processor determines that a foreign object has not entered the third accommodating groove 231f.

[0498] In this embodiment, if the host 2 determines that a foreign object has entered the third accommodating groove 231f, the processor of the host 2 may control the charging circuit of the host 2 to be turned off. Therefore, when the first earphone 31 is accommodated in the third accommodating 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 the host 2 determines that a foreign object has entered the third receiving groove 231f, the processor of the host 2 may further control an alarm module in the host 2 to send an alarm and alert the user. The alarm module may be, for example, a speaker, a buzzer, a motor, etc. in the host 2. It may be understood that an alarm mechanism is not necessary based on product requirements.

[0500] In this embodiment, when the host 2 determines that no foreign object has entered the third receiving groove 231f, the processor of the host 2 can control to turn on the charging circuit of the host 2. Thus, when the first earphone 31 is received in the third receiving groove 231f, the host 2 charges the first earphone 31 normally.

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

[0502] 8. The host 2 charges the first earphone 31

[0503] Referring to the above description, due to the structural design of the first electrode and the second electrode in the first earphone 31, after the first earphone 31 is placed in the third receiving 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, ensuring that the host 2 can normally charge the first earphone 31. This design simplifies the user's operation and improves the user experience.

[0504] 9. Host 2 charging overheat protection mechanism

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

[0506] In consideration of this, the host 2 may have a temperature detection module, which may be disposed, for example, near the first receiving groove 213y and / or the third receiving groove 231f. The temperature detection module may be, for example, a thermistor. The temperature detection module is configured to detect the temperature at the mounting position of the temperature detection module and report the temperature to the processor of the host 2. The processor may determine whether the temperature rise exceeds a threshold based on the detection information of the temperature detection module. When the temperature rise is equal to or greater than the threshold, the processor may control the charging circuit of the host 2 to be turned off to prevent the host 2 from charging the first earphone 31, thereby suppressing the temperature rise. When the temperature rise is less than the threshold, the processor may control the charging circuit of the host 2 to be turned on to allow the host 2 to charge the first earphone 31. This charging overheat protection mechanism can improve the safety, life and reliability of the product and ensure the user experience.

[0507] In this embodiment, when the processor of the host 2 determines that the temperature rise is too high, the processor may further control an alarm module in the host 2 to send an alarm and alert the user. The alarm module may be, for example, a speaker, a buzzer, a motor, etc. in the host 2. It may be understood that based on product requirements, an alarm mechanism is not necessary.

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

[0509] The above description is merely a specific implementation form of the present application, and is not intended to limit the protection scope of the present application. Any modifications or replacements that are easily understood by those skilled in the art within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An earphone, The earphone has a centrosymmetric shape, the earphone comprises an earphone front housing, an earphone magnet, a first electrode, and a second electrode, the earphone magnet is a ring structure surrounding a center line of the earphone, the earphone magnet is fixed to an inner wall of the earphone front housing, both the first electrode and the second electrode are located outside the earphone and are ring structures surrounding the center line of the earphone, and the first electrode and the second electrode are fixed to two opposing ends of the earphone front housing, respectively. Earphones.

2. The first electrode is a closed ring structure or an open ring structure. The earphone according to claim 1 .

3. The first electrode is an open ring structure, and there are at least two first electrodes, the at least two first electrodes being arranged in spaced pairs and distributed on the same circle; The earphone according to claim 1 or 2.

4. The earphone comprises a first earphone circuit board assembly, the earphone front housing having a through hole, 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 disposed on an inner surface of the electrode body of the first electrode, the electrode body of the first electrode is secured to an outer surface of an 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 a circuit board of the first earphone circuit board assembly within the earphone front housing; The earphone according to any one of claims 1 to 3.

5. the 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 disposed on an inner surface of the electrode body of the second electrode, the electrode body of the second electrode is connected to the earphone rear housing and the earphone front housing, the second earphone circuit board assembly is located in a space enclosed by the electrode body of the second electrode and the earphone rear housing, and the conductive portion of the second electrode is electrically connected to a circuit board of the second earphone circuit board assembly. The earphone according to any one of claims 1 to 4.

6. There is one earbud magnet, and the earbud magnet has a closed ring configuration; or there are at least two earbud magnets, and the at least two earbud magnets are spaced apart, and each earbud magnet has an open ring configuration. The earphone according to any one of claims 1 to 5.

7. the earphone comprises the first earphone circuit board assembly, an earplug support, and a front vent acoustic mesh; the first earphone circuit board assembly is attached to the earphone front housing, the first electrode is electrically connected to the circuit board of the first earphone circuit board assembly; The earplug support has a hollow tubular structure, one end of the earplug support has a through hole, and a front air hole is provided in the wall of the earplug support, and the front air hole communicates with the space inside and outside the earplug support; The front vent acoustic mesh comprises a fastening region and a blocking region, the blocking region is connected to a side of the fastening region, the fastening region is bonded to the earphone front housing and to an end of the earplug support remote from the through hole of the earplug support, the blocking region is bonded to an inner wall of the earplug support to block the front vent, and the blocking region is configured to pass sound wave signals. The earphone according to any one of claims 1 to 6.

8. the earphone comprises the first earphone circuit board assembly, the earplug support, a speaker, and a secondary microphone; the earphone front housing has a sound pickup 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 the front air hole, the front air hole is connected to the inside and outside spaces of the earplug support, the end of the earplug support away from the through hole of the earplug support is fixed to the front housing of the earphone, and the internal cavity of the earplug support is connected to the sound collection 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 a sound wave signal emitted from the speaker is propagated to the outside of the earphone through the through hole of the earplug support; the secondary microphone is disposed on the circuit board of the first earphone circuit board assembly, the secondary microphone is configured to pick up a noise signal 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 having a signal phase inverse to that of the noise signal to realize active noise reduction; The earphone according to any one of claims 1 to 7.

9. The speaker is further configured to emit a sound wave signal at a specific frequency, and the secondary microphone is further configured to pick up the sound wave signal at the specific frequency; The earphone includes a control unit, and the control unit is configured to determine whether the earphone is being worn based on a signal strength of the sound wave signal of the specific frequency picked up by the secondary microphone. The earphone according to claim 8.

10. the earphone comprises the first earphone circuit board assembly, the earplug support, and a wear detection plate; the first earphone circuit board assembly is attached to the earphone front housing, 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 earphone front housing, and the material of the earplug support includes a conductive material; the fit detection plate is located on the earphone front housing, the fit detection plate is connected to an end of the earplug support proximate the earphone front housing and is electrically connected to the circuit board of the first earphone circuit board assembly, the fit detection plate and the earplug support are each configured to generate a coupling capacitance when proximate a human body; The earphone includes the controller, and the controller is configured to determine whether the earphone is being worn based on the value of the coupling capacitance. The earphone according to any one of claims 1 to 9.

11. The earphone comprises the first earphone circuit board assembly, a wear detection sensor 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 includes the control unit, and the control unit is configured to determine whether the earphone is being worn based on a detection signal of the wearing detection sensor. The earphone according to any one of claims 1 to 10.

12. The earphone comprises the earplug support and an earplug, the earplug comprises a connected earplug inner cover and an earplug outer cover, the earplug inner cover is sleeved around the earplug support, the earplug outer cover surrounds the earplug inner cover, a surface of the earplug outer cover facing the earplug inner cover is provided with a first bump, and the first electrode is located between the earplug and the second electrode. The earphone according to any one of claims 1 to 11.

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 air vent, the front air vent communicates with the interior and exterior spaces of the earplug support, a skirt edge is formed around the periphery of the earplug support, and the front air vent is adjacent to the skirt edge; The earplug comprises an outer cover and an inner cover connected together, the inner cover is sleeved around the periphery of the earplug support, the skirt edge is exposed on the outside of the inner cover, the inner cover has a second bump on the end surface facing the skirt edge, the second bump contacts the skirt edge, and the outer cover surrounds the periphery of the inner cover; The first electrode is located between the earplug and the second electrode. The earphone according to any one of claims 1 to 12.

14. the earphone comprises the earphone rear housing, a third earphone circuit board assembly, and a primary microphone; The rear housing has a sound pickup through hole and at least two wind noise prevention through holes, the sound pickup through hole and each wind noise prevention through hole communicate with an inner and outer space of the rear housing, the third earphone circuit board assembly is located in the earphone rear housing, and the second electrode is connected to the earphone rear housing and the earphone front housing; the primary microphone is disposed on a circuit board of the third earphone circuit board assembly, and the primary microphone is configured to pick up a sound wave signal entering the rear housing through the sound pickup through-hole; The earphone according to any one of claims 1 to 13.

15. An earphone, The earphone has a centrally symmetric shape, and the earphone includes an earphone rear housing, a third earphone circuit board assembly, an antenna, a controller, 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 earphone rear housing; the antenna is located in the earphone rear housing, the antenna is a common mode antenna, the antenna comprises a first antenna branch and a second antenna branch, the first antenna branch and the second antenna branch are spaced apart, the first antenna branch and the second antenna branch each have a tip, the tip of the first antenna branch and the tip of the second antenna branch are each connected to a feed point, the first antenna branch is coupled to the second antenna branch, whereby the antenna operates in a specific frequency band; the control unit is configured to determine an antenna branch having a better signal quality from the first antenna branch and the second antenna branch, and control the switch circuit to switch the antenna branch having the better signal quality to a power feed end and to switch the other antenna branch to a ground end. Earphones.

16. The earphone rear housing includes a bottom wall and a peripheral side wall, the peripheral side wall surrounds a periphery of the bottom wall, and the peripheral side wall and the bottom wall enclose an open cavity; the first antenna prong comprises a first segment and a second segment that are bent and connected, the tip of the first antenna prong being an end of the first segment remote from the second segment, the first segment being fixed to the peripheral side wall, and the second segment being fixed to the bottom wall; The earphone according to claim 15.

17. the second segment has a curved shape from an end of the second segment proximal to the first segment to an end of the second segment distal to the first segment; the second segment extends in a direction from the peripheral sidewall toward the bottom wall, or the second segment extends in a direction from the bottom wall toward the peripheral sidewall. The earphone of claim 16.

18. the second antenna branch includes a third segment and a fourth segment that are bent and connected, the tip of the second antenna branch is an end of the third segment remote from the fourth segment, the third segment is fixed to the peripheral side wall, and the fourth segment is fixed to the bottom wall; the fourth segment has a curved shape from an end of the fourth segment proximal to the third segment to an end of the fourth segment distal to the third segment; the fourth segment extends in the direction from the peripheral side wall toward the bottom wall, or the fourth segment extends in the direction from the bottom wall toward the peripheral side wall. The earphone of claim 17.

19. the first antenna fork and the second antenna fork each have a tail end, the tail end of the first antenna fork and the tip end of the first antenna fork are two opposing ends of the first antenna fork, and the tail end of the second antenna fork and the tip end of the second antenna fork are two opposing ends of the second antenna fork; The tail end of the first antenna fork or the tip end of the first antenna fork is coupled to the tail end of the second antenna fork or the tip end of the second antenna fork.

19. The earphone according to any one of claims 15 to 18.

20. the two feed points on the circuit board of the third earphone circuit board assembly are symmetrical about a centerline of the earphone; 20. The earphone according to any one of claims 15 to 19.

21. An assembly jig for use with the earphone according to any one of claims 1 to 20, the earphone comprising an earphone front housing and at least two earphone magnets; The assembly jig includes a base, a jig magnet, and an upper cover; The base has a work positioning groove and a fixture magnet mounting groove, the work positioning groove is configured to receive the earphone front housing, the number of the fixture magnet mounting grooves is the same as the number of the earphone magnets, and all the fixture magnet mounting grooves are distributed at intervals outside the work positioning groove and communicate with the work positioning groove; The number of the jig magnets is the same as the number of the earphone magnets, and one jig magnet is attached to one jig magnet attachment groove; The upper cover comprises a cover plate and an upper cover limiting rod, the cover plate is provided with magnet arrangement through holes, the number of the magnet arrangement through holes is equal to the number of the earphone magnets, the axis of each magnet arrangement through hole is in the thickness direction of the cover plate, the upper cover limiting rod is connected to the side of the cover plate in the thickness direction, the upper cover limiting rod has limiting parts, the number of the limiting parts is equal to the number of the earphone magnets, and the protrusion of one limiting part in the axial direction of the magnet arrangement through hole enters one magnet arrangement through hole correspondingly; The upper cover is detachably connected to the base, the cover plate is in contact with the base, protrusions in different regions of the workpiece positioning groove in the axial direction of the magnet placement through hole respectively enter the magnet placement through hole, the upper cover limiting rod extends into the workpiece positioning groove, and each limiting portion is disposed at a distance from a side wall of the workpiece positioning groove, and each limiting portion is configured to form a gap with an 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 in the assembly jig, each gap is configured to allow one earphone magnet that enters the assembly jig to be placed in the earphone front housing, and each jig magnet is configured to magnetically attract one earphone magnet that is correspondingly placed in the earphone front housing. Assembly jig.

22. All of the jig magnet mounting grooves are equally spaced and evenly distributed on the outer side of the workpiece positioning groove; 22. The assembly jig of claim 21.

23. The base is provided with an upper cover positioning hole, 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; 23. An assembly jig according to claim 21 or 22.

24. the base has a base magnet, the top cover has a top cover magnet fixed to the cover plate, and when the top cover is detachably connected to the base, the top cover magnet magnetically attracts the base magnet; 24. An assembly jig according to any one of claims 21 to 23.

25. The base is provided with a clamp receiving groove, the clamp receiving groove being connected to the workpiece positioning groove; The assembly jig includes a clamp, and a portion of the clamp is configured to clamp the earphone front housing; When the upper cover is detachably connected to the base, both a part of the clamp and the earphone front housing clamped by the clamp are accommodated in the work positioning groove, and the other part of the clamp is accommodated in the clamp accommodating groove.

25. An assembly jig according to any one of claims 21 to 24.

26. A method for manufacturing an earphone, comprising: At least two earphone magnets are assembled to the earphone front housing of the earphone according to any one of claims 1 to 20 using the assembly jig according to any one of claims 21 to 25, and the manufacturing method includes: positioning the earphone front housing in a work positioning groove of the assembly jig; Attaching the upper cover of the assembly jig to the base so that a cover plate contacts the base, protrusions in different regions of the earphone front housing in the axial direction of the magnet placement through-holes respectively enter the magnet placement through-holes, an upper cover limiting rod extends into the earphone front housing, and each limiting portion forms a gap with an inner wall of the earphone front housing; attaching all of the earphone magnets to the earphone front housing, where 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 fixture magnet attaches one earphone magnet corresponding to the fixture magnet to the inner wall of the earphone front housing; removing the top cover from the base; fixedly connecting each earbud magnet to the inner wall of the earbud front housing; removing the earphone front housing with the earphone magnet attached thereto from the base; A manufacturing method comprising:

27. wherein the step of fixedly connecting each earbud magnet to the inner wall of the earbud front housing includes bonding each earbud magnet to the inner wall of the earbud front housing using a dispensing technique. The method of claim 26.

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