earphone

Abstract

The present disclosure relates generally to earphones. The present disclosure includes several different features suitable for use in both over-ear and on-ear earphone designs. Designs for earpad assemblies that include improved sound isolation are discussed. User convenience features that include automatic detection of the orientation of the earphone on a user's head are also discussed. Various power saving features, design features, sensor configurations, and user comfort features are also discussed.

Description

[0001] This application is a divisional application of the international application number PCT / US2019 / 025384, the international application date is April 2, 2019, the entry date into the Chinese national phase is September 15, 2020, the national application number is 201980019404.6, and the invention title is "Headphones".

[0002] Cross-referencing of related patent applications

[0003] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 651,634, filed April 2, 2018, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0004] The embodiments described in this invention generally relate to various headphone features. More specifically, these features help improve the overall user experience by incorporating sensor arrays and novel mechanical features into the headphones. Background Technology

[0005] Headphones have been around for over 100 years, but the design of the mechanical frame used to hold the earpiece snugly against the user's ear has stagnated somewhat. For this reason, some headphones are difficult to transport easily without using a bulky case or by being conspicuously worn around the neck when not in use. The conventional interconnect between the earpiece and the headband often uses a yoke around the perimeter of each earpiece, which increases the overall volume of each earpiece. Furthermore, the user needs to manually verify proper earpiece alignment with their ear at any time they wish to use the headphones. Therefore, improvements to these shortcomings are desired. Summary of the Invention

[0006] This disclosure describes several improvements to the design of over-ear and ear-hook headphone frames.

[0007] This document discloses an earphone comprising: a left earpiece; a right earpiece; and a headband assembly extending between the left and right earpieces. The headband assembly includes: a frame defining a central opening and having a left frame end, a right frame end, and a central frame region located between the left and right frame ends and raised relative to the left and right frame ends; a signal cable electrically coupled to the left and right earpieces and extending through an internal volume defined by the frame; and a mesh extending across the central opening.

[0008] This document discloses a portable listening device comprising: a headband defining a central opening and a channel positioned around the periphery of the central opening; and a mesh assembly comprising: a flexible mesh material covering the central opening; and a locking feature extending around the periphery of the flexible mesh material and engaging within the channel.

[0009] This document discloses an earpiece comprising: a housing defining a cavity for adapting to a user's ear; an active noise cancellation system for destructively interfering with noise originating outside the housing; an annular earpad attached to the periphery of the housing; and a textile layer wound around the annular earpad, the textile layer including a heat-treated region having a lower porosity than other regions of the textile layer.

[0010] This document discloses an earphone comprising: a first earpiece; a second earpiece; a headband assembly that engages the first earpiece with the second earpiece; a strain gauge disposed within the first earpiece and configured to measure the amount of rotation of the first earpiece relative to the headband assembly; and a processor configured to change the operating state of the earphone when the processor determines, based on sensor readings received from the strain gauge, that the amount of rotation of the first earpiece relative to the headband assembly has exceeded a predetermined threshold.

[0011] This document discloses an earphone comprising: a first earpiece; a second earpiece; and an adjustable-length headband assembly that couples the first earpiece to the second earpiece, the adjustable-length headband assembly including: a first segment defining a plurality of channels; and a second segment at least partially disposed within the first segment, the second segment including a spring contact engaging with a channel defined by the first segment, the channel defining a range of motion of the second segment relative to the first segment; and a data synchronization cable extending through the first and second segments, the data synchronization cable being coiled within the adjustable-length headband assembly.

[0012] An earphone is disclosed, comprising: a first earpiece and a second earpiece; and a headband assembly that connects the first earpiece to the second earpiece, the headband assembly including: a rigid cable coupled to the first earpiece; and a signal cable arranged in a helical geometry around the rigid cable and electrically coupled to the first earpiece, the rigid cable being configured to guide the expansion and contraction of the signal cable.

[0013] This document discloses an earphone comprising: a first earpiece including a capacitive sensor array configured to detect one or more physical features of a user's ear; a second earpiece; a headband assembly mechanically and electrically coupling the first earpiece to the second earpiece; and a processor configured to determine a pattern formed by one or more physical features detected by the capacitive sensor array.

[0014] This document discloses an earphone comprising: a first earpiece including a first sensor; a second earpiece including a second sensor configured to cooperate with the first sensor to detect one or more physical features of a user's head; a headband assembly mechanically and electrically coupling the first earpiece to the second earpiece; and a processor configured to determine the location or orientation of one or more detected physical features and, based on the determination, assign a left audio channel and a right audio channel to the first earpiece and the second earpiece.

[0015] This document discloses an earphone comprising: a left earpiece; a right earpiece; and a headband coupled to the left and right earpieces. The headband includes a frame defining a central opening and having a left frame end, a right frame end, and a central frame region located between the left and right frame ends; and a mesh coupled to the frame and forming a curved profile such that the central region of the mesh is raised above the left and right frame ends and below the central frame region.

[0016] Other aspects and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate the principles of the described embodiments by way of example. Attached Figure Description

[0017] This disclosure will be readily understood from the following detailed embodiments, taken in conjunction with the accompanying drawings, wherein similar reference numerals denote similar structural elements, and wherein:

[0018] Figure 1A A front view of an exemplary set of over-ear or on-ear headphones is shown;

[0019] Figure 1B The headphone stems extend at different distances from the headband assembly;

[0020] Figure 2A A perspective view of the first side of an earphone with a synchronized earphone stem is shown;

[0021] Figures 2B to 2C They are shown respectively Figure 2A The headphones shown are a cross-sectional view based on section lines AA and BB;

[0022] Figure 2D It shows Figure 2D A perspective view of the opposite sides of the headphones shown;

[0023] Figure 2E It shows Figure 2D The headphones shown are a cross-sectional view based on section line CC;

[0024] Figures 2F to 2G A perspective view of the second side of a headset with a synchronized headphone stem and a single spring clamp is shown.

[0025] Figures 2H to 2I They are shown respectively Figures 2F to 2G The headphones shown are a cross-sectional view based on section lines DD and EE;

[0026] Figure 3A An exemplary pair of headphones is shown, the headband assembly being configured to synchronize the adjustment of the position of its earpieces;

[0027] Figure 3B A cross-sectional view of the headband assembly is shown when the headphones are extended to their maximum size;

[0028] Figure 3C A cross-sectional view of the headband assembly is shown when the headphones are shrunk to a smaller size;

[0029] Figures 3D to 3F A perspective top view and a sectional view of a headband assembly configured to synchronize the position of the earpiece are shown.

[0030] Figures 3G to 3H A top view of the handset synchronization assembly is shown;

[0031] Figures 3I to 3J It shows the relationship with Figures 3G to 3H A flat schematic diagram of another earpiece synchronization system similar to the one shown;

[0032] Figures 3K to 3L It shows that it is suitable for binding Figures 3G to 3J A cross-sectional view of the earpiece 360 ​​of any of the earpiece synchronization systems shown;

[0033] Figures 3M to 3N It shows Figures 3G to 3H The image shows a perspective view of the handset synchronization system in the retracted and extended positions, as well as the data synchronization cable.

[0034] Figure 3O A portion of the headgear structure is shown, as well as how the earpiece synchronization system is deployed through the reinforcing members of the headgear structure, including it;

[0035] Figures 4A to 4B A front view of an earphone 400 with an eccentric pivot earpiece is shown;

[0036] Figure 5A An exemplary pivoting mechanism including a torsion spring is shown;

[0037] Figure 5B This shows the part positioned behind the earpiece pad. Figure 5A The pivoting mechanism shown;

[0038] Figure 6A A perspective view showing another pivoting mechanism including leaf springs is shown;

[0039] Figures 6B to 6D It shows the use of Figure 6A The range of motion of the earpiece in the pivoting mechanism shown;

[0040] Figure 6E It shows Figure 6A An exploded view of the pivoting mechanism shown;

[0041] Figure 6F A perspective view of another pivoting mechanism is shown;

[0042] Figure 6G This demonstrates yet another pivoting mechanism;

[0043] Figures 6H to 6I It shows Figure 6G The pivoting mechanism shown has one side removed to illustrate the rotation of the rod base in different positions;

[0044] Figure 6J It shows the housing inside the earpiece. Figure 6G A cross-sectional perspective view of the pivot component;

[0045] Figures 6K to 6L A partial cross-sectional side view of a pivot assembly positioned within the earpiece housing is shown, with the coil spring in a relaxed and compressed state;

[0046] Figures 6M to 6N Side views of the rod base, isolated from its pivoting assembly, are shown in two different rotational positions.

[0047] Figure 7A Several locations of spring clamps suitable for use in headband assemblies are shown;

[0048] Figure 7B A coordinate graph is shown, illustrating how the spring force varies with the elastic ratio. Figure 7A The spring clamp shown changes with displacement;

[0049] Figures 8A to 8BA solution for preventing discomfort caused by headphones wrapping too tightly around a user's neck is shown;

[0050] Figures 8C to 8D This demonstrates how individual and distinct steering knuckles can be arranged along the underside of the spring clamp to prevent the spring clamp from returning to the neutral position;

[0051] Figures 8E to 8F This illustrates how the spring that engages the headband assembly with the earpiece can cooperate with the spring clamp 700 to set the actual amount of force applied to the user by the headphones;

[0052] Figures 8G to 8H This demonstrates another way to limit the range of motion of a pair of headphones using a low elasticity ratio hoops;

[0053] Figure 9A The earpiece of the earphone is shown, positioned above the user's ear;

[0054] Figure 9B The location of the capacitive sensor is shown below the surface and close to the ear contour associated with the ear;

[0055] Figure 10A A top view of an exemplary head of a user wearing headphones is shown;

[0056] Figure 10B It shows Figure 10A The front view of the headphones shown;

[0057] Figures 10C to 10D It shows Figure 10A The top view of the headphones shown illustrates how the earpiece can rotate around the corresponding yaw axis.

[0058] Figures 10E to 10F A flowchart is shown, which describes the control methods that can be performed when roll and / or yaw of the handset relative to the headband is detected;

[0059] Figure 10G A system-level block diagram of a computing device 1070 that can be used to implement the various components described herein is shown;

[0060] Figures 11A to 11C Foldable headphones were shown;

[0061] Figures 11D to 11F This demonstrates how the earpiece of the foldable headphones can fold toward the outward-facing surface of the deformable band area;

[0062] Figures 12A to 12B An embodiment of the headphones is shown that can be changed from an arched state to a flat state by pulling on the opposite side of the spring clamp;

[0063] Figures 12C to 12DSide views of the foldable column area in both arched and flat states are shown.

[0064] Figure 12E It shows Figure 12D A side view of one end of the earphone shown;

[0065] Figures 13A to 13B A partial cross-sectional view is shown of an earphone that uses an off-axis cable to switch between an arched and a flat state.

[0066] Figures 14A to 14C A partial cross-sectional view of an earphone with a foldable stem area is shown, which is at least partially constrained by an extension pin that delays the flattening of the earphone through the first portion of the earpiece's travel.

[0067] Figures 15A to 15F Various views of the headband assembly 1500 from different angles and in different states are shown;

[0068] Figures 16A to 16B The headband assembly is shown in both folded and arched states;

[0069] Figures 17A to 17B A view of another foldable headphone implementation is shown;

[0070] Figure 18A A perspective view of headphones worn by a user is shown;

[0071] Figure 18B It shows Figure 18A The earphone shown is a cross-sectional side view based on section line FF;

[0072] Figure 18C It shows Figure 18A The rear view of the headphones shown;

[0073] Figures 19A to 19G The composition is shown Figures 18A to 18C Perspective views of various embodiments of the headphone's headband structure components shown;

[0074] Figure 20A One side of the headband housing and a telescopic member extending from the end of the headband housing are shown;

[0075] Figure 20B It shows Figure 20A An exploded view of the side of the headband shell shown;

[0076] Figure 20C It shows that according to Figure 20B A cross-sectional view of the first end of the lower housing component shown in section line GG;

[0077] Figure 20DA cross-sectional view of the second end of the lower housing component according to section line HH is shown;

[0078] Figure 20E A perspective view of a bushing is shown, which defines a plurality of contact channels radially spaced around an inwardly facing surface of the bushing;

[0079] Figure 21A A perspective view of one end of the spring member and the telescopic member is shown;

[0080] Figure 21B A spring contact is shown that engages within a first set of openings defined by the end of the telescopic member;

[0081] Figure 21C An offset spring member is shown such that the spring contact engages within a second set of openings defined by the end of the telescopic member;

[0082] Figures 21D to 21G Various locking mechanisms are shown positioned at an opening defined by the lower housing assembly, through which a telescopic assembly extends;

[0083] Figures 22A to 22E Various extended and retractable coil configurations of a portion of the synchronizing cable disposed within the lower housing component are shown;

[0084] Figure 23A An exploded view of the components associated with the data plug is shown;

[0085] Figure 23B A telescopic member is shown fully assembled with a threaded fastener that fully engages within the threaded opening to keep the data plug firmly positioned.

[0086] Figure 23C It shows that according to Figure 23B Sectional view of the expansion joint in section line II;

[0087] Figure 23D A perspective view of a portion of a data plug with multiple adhesive channels is shown;

[0088] Figure 23E A cross-sectional side view of this portion of the data plug is shown, and multiple adhesive channels are shown positioned on opposite sides of the body of the data plug.

[0089] Figure 23F A data plug is shown glued to a rod base, which is then positioned within a recess defined by the earpiece;

[0090] Figure 23G A cross-sectional view of a data plug disposed within a recess defined by a rod base, which in turn is positioned within a recess of the earpiece;

[0091] Figure 24A A perspective view of the earpiece and earpads is shown;

[0092] Figure 24B This demonstrates how earpieces for a pair of headphones can have thin ear pads without sacrificing user comfort;

[0093] Figure 24C This illustrates how the column connects the flexible substrate supporting the ear pad to the earpiece yoke;

[0094] Figure 24D The earpiece and rotating shaft are shown, with the ear pads configured to bend around the rotating shaft to conform to the skull contours of the user's head;

[0095] Figures 24E to 24G Another earpiece with a configuration designed to take into account the skull contours of the user's head is shown;

[0096] Figures 25A to 25C Various views of another ear pad configuration formed by multiple material layers are shown;

[0097] Figure 25D This demonstrates how the heat-treated area of ​​the textile layer comes into direct contact with this side of the user's head when the headphones are in active use;

[0098] Figures 26A to 26B A perspective view of the ear pads in different orientations is shown;

[0099] Figures 26C to 26G The various manufacturing operations for forming ear pads from a single piece of foam are shown;

[0100] Figure 27A A cross-sectional side view of an exemplary acoustic configuration within a handset is shown, which can be applied to many handsets previously described;

[0101] Figure 27B The exterior of the earpiece is shown, with the input panel removed to reveal the shape and dimensions of the internal volume associated with the speaker assembly;

[0102] Figure 27C A microphone installed inside the earpiece is shown;

[0103] Figure 28 A handset with an input panel is shown, which can form the outward-facing surface of the handset;

[0104] Figures 29A to 29B A perspective view and a sectional view of the earpiece's outline are shown, which show the location of the distributed battery assembly inside the earpiece;

[0105] Figure 29CThis demonstrates how more than two discrete battery assemblies can be combined into a single earpiece housing;

[0106] Figure 30A An exemplary pair of headphones is shown, the headphones including earpieces joined together by a headband;

[0107] Figure 30B An exemplary loading / storage case is shown that is ideally suited for use with the over-ear and ear-hook headphone designs discussed herein; and

[0108] Figure 30C The earphone 3000 is shown positioned within the recess of the case; and

[0109] Figure 30D It shows that according to Figure 30C The section line LL is the sectional view of the earpiece;

[0110] Figure 30E The image shows the loading case in which the headphones are located;

[0111] Figures 31A to 31B An illuminated button assembly suitable for use with the headphones is shown;

[0112] Figures 31C to 31D The non-actuated and actuated positions, respectively, are shown within the device housing. Figures 31A to 31B A side view of the illuminated button assembly shown;

[0113] Figure 31E A perspective view of the illuminated window is shown;

[0114] Figures 32A to 32B A perspective view of a pivot assembly associated with a removable earpiece that engages with the rod base of the headphone hoop is shown;

[0115] Figures 33A to 33C Different views of the latching mechanism of the pivot assembly are shown;

[0116] Figure 34A The image shows headphones, which include earpieces mechanically connected together by a headband assembly;

[0117] Figure 34B A close-up view of the pole area of ​​the headband assembly is shown;

[0118] Figure 34C A close-up view of the distal end of the telescopic component is shown;

[0119] Figure 34D It is shown that, according to, Figure 34B The cross-sectional view of the distal end of the telescopic component shown in section line MM;

[0120] Figure 34EIt is shown that, according to, Figure 34B A cross-sectional view of the distal end of the lower housing component shown by section line NN;

[0121] Figures 34F to 34H Several alternative embodiments are shown that allow for a larger or smaller clearance between the lower housing component and the telescopic component; and

[0122] Figures 34I to 34J The configuration shown includes a telescopic component disposed within an internal volume defined by the lower housing component. Detailed Implementation

[0123] This section describes representative applications of the methods and apparatus according to this application. These examples are provided only to add context and aid in understanding the described embodiments. Therefore, it will be apparent to those skilled in the art that the described embodiments can be practiced without some or all of these specific details. In other instances, well-known processing steps have not been described in detail to avoid unnecessarily obscuring the embodiments. Other applications are possible, such that the following examples should not be considered limiting.

[0124] In the following detailed description, reference is made to the accompanying drawings, which form part of the specification, and specific embodiments according to the described embodiments are illustrated by way of example. While these embodiments are described in sufficient detail to enable those skilled in the art to practice them, it should be understood that these examples are not limiting; other embodiments can be used, and modifications can be made without departing from the spirit and scope of the embodiments.

[0125] Headphones have been manufactured for many years, yet numerous design problems persist. For example, the headband associated with headphones generally functions only as a mechanical connection, serving solely to hold the earpieces above the user's ears and provide electrical connection between them. Headbands often significantly increase the size of headphones, making storage difficult. Adjustable posts that connect the headband to the earpieces and are designed to accommodate earpiece orientation relative to the user's ears also contribute to the headphone's size. Adjustable posts that accommodate headband elongation typically allow the center portion of the headband to shift to one side of the user's head. This offset configuration can look somewhat odd and, depending on the headphone design, can make the headphones uncomfortable to wear.

[0126] While some improvements, such as wirelessly delivering media content to headphones, have alleviated the problem of tangled wires, this type of technology introduces its own set of issues. For example, because wireless headphones require battery power to operate, a user keeping the headphones connected may inadvertently drain the battery, rendering the headphones unusable until a new battery is installed or the device is recharged. Another design problem with many headphones is that users often have to figure out which earpiece corresponds to which ear to prevent situations where the left audio channel is provided to the right ear and the right audio channel to the left ear.

[0127] A solution to asynchronous earpiece positioning is to incorporate an earpiece synchronization mechanism, which takes the form of a mechanical device housed within the headband and synchronizes the distance between the earpiece and the corresponding ends of the headband. This type of synchronization can be performed in several ways. In some embodiments, the earpiece synchronization mechanism may be a cable extending between two posts, configured to synchronize the movement of the earpieces. The cable may be arranged in loops, with different sides of the loops attached to corresponding posts of the earpieces such that movement of one earpiece away from the headband causes the opposite end of the other earpiece to move the same distance away from the headband. Similarly, pushing one earpiece toward one side of the headband translates the other earpiece the same distance toward the opposite side of the headband. In some embodiments, the earpiece synchronization mechanism may be a rotating gear embedded within the headband, configured to mesh with the teeth of each post to maintain earpiece synchronization.

[0128] One solution to the conventional bulky connection between the headphone stem and the earpiece is to use a spring-driven pivoting mechanism to control the movement of the earpiece relative to the headband. The spring-driven pivoting mechanism can be positioned near the top of the earpiece, allowing it to be integrated inside the earpiece rather than outside. In this way, the pivoting function can be built into the earpiece without increasing the overall volume of the headphones. Different types of springs can be used to control the movement of the earpiece relative to the headband. Specific examples, including torsion springs and leaf springs, are described in detail below. The spring associated with each earpiece can cooperate with a spring within the headband to set the amount of force applied to the user wearing the headphones. In some embodiments, the spring within the headband can be a low-ratio spring, configured to minimize variations in force applied by a wide range of users with different head sizes. In some embodiments, the travel of the low-ratio spring in the headband can be limited to prevent the headband from clamping too tightly around the user's neck when worn around the neck.

[0129] One solution to the headband shape factor problem is to design the headband to flatten against the earpiece. Flattening the headband allows the arched geometry of the headband to be compressed into a flat geometry, thus allowing the headphones to achieve a size and shape suitable for easier storage and transport. The earpiece can be attached to the headband by a foldable post area, allowing the earpiece to fold towards the center of the headband. The force applied to each earpiece folding towards the headband is transmitted to a mechanism that pulls the corresponding end of the headband to flatten it. In some embodiments, the post may include an eccentric locking mechanism to prevent the headphones from accidentally returning to an arched state, eliminating the need for a release button to return the headphones to an arched state.

[0130] Solutions to power management issues associated with wireless headphones include incorporating an orientation sensor into the earpiece, which can be configured to monitor the earpiece's orientation relative to the headband. The earpiece's orientation relative to the headband can be used to determine whether the headphones are worn over the user's ear. This information can then be used to put the headphones into standby mode or completely power them off if they are not determined to be positioned over the user's ear. In some implementations, the earpiece orientation sensor can also be used to determine which earpiece is currently covering the user's ear. Circuitry within the headphones can be configured to switch the audio channels routed to each earpiece to match the determination related to which earpiece is located on which ear of the user.

[0131] Please refer to Figures 1 to 2 below. Figure 31E These and other embodiments will be discussed here; however, those skilled in the art will readily understand that the detailed descriptions given herein with respect to the accompanying drawings are for illustrative purposes only and should not be construed as limiting.

[0132] Symmetrical telescopic earpiece

[0133] Figure 1A A front view of an exemplary over-ear or on-ear headphone 100 is shown. The headphone 100 includes a strap 102 that interacts with posts 104 and 106 to allow for adjustability in the size of the headphone 100. Specifically, posts 104 and 106 are configured to offset independently relative to the strap 102 to accommodate multiple different head sizes. This allows for adjustment of the position of earpieces 108 and 110 to position them directly above the user's ears. Unfortunately, as in... Figure 1B As can be seen, this type of configuration allows the bars 104 and 106 to become mismatched with respect to the hoops 102. Figure 1B The configuration shown may be uncomfortable for the user and lacks aesthetic appeal. To address these issues, the user will be forced to manually adjust the posts 104 and 106 relative to the strap 102 to achieve the desired appearance and comfortable wearing experience. Figures 1A to 1BIt is also shown how the rods 104 and 106 extend downwards to the central portion of the earpiece 108 to allow the earpiece 108 to rotate to accommodate the curvature of the user's head. As mentioned above, the portions of the rods 104 and 106 extending downwards around the earpiece 108 increase the diameter of the earpiece 108.

[0134] Figure 2A It shows a configuration for solving Figures 1A to 1B The headband 202 shown is a perspective view of the headphone 200 of the problem illustrated. The headband 202 is shown without any decorative coverings to reveal the internal features. Specifically, the headband 202 may include a loop 204 configured to synchronize the movement of the posts 206 and 208. A line guide 210 may be configured to maintain the curvature of the loop 204, matching the curvature of the leaf springs 212 and 214. The leaf springs 212 and 214 may be configured to define the shape of the headband 202 and to apply force to the user's head. Each line guide 210 may include an opening through which the opposite sides of the loop 204 and the leaf springs 212 and 214 may pass. In some embodiments, the opening for the loop 204 may be defined by a low-friction bearing to prevent significant frictional impediment to the movement of the loop 204 through the opening. Thus, the line guide 210 defines a path along which the loop 204 extends between the post housings 216 and 218. The loop 204 is connected to both rods 206 and 208 and functions to maintain a distance 120 between the handset 122 and the rod housing 116 that is substantially the same as the distance 124 between the handset 126 and the rod housing 118. A first side 204-1 of the loop 204 is connected to rod 206, and a second side 204-2 of the loop 204 is connected to rod 208. Because the opposite sides of the loops are attached to rods 206 and 208, movement of one rod causes movement of the other rod in the same direction.

[0135] Figure 2B A sectional view of a portion of the rod housing 116 according to section line AA is shown. Specifically, Figure 2BThe diagram illustrates how a protrusion 228 of the stem 206 engages a portion of the loop 204. Because the protrusion 228 of the stem 206 is engaged with the loop 204, when the user of the earphone 100 pulls the earpiece 222 further away from the stem housing 216, the loop 204 is also pulled, causing the loop 204 to loop through the headband 202. This loop 204 looping through the headband 202 adjusts the position of the earpiece 226, which is similarly engaged with the loop 204 by the protrusion of the stem 208. In addition to forming a mechanical connection with the loop 204, the protrusion 228 may also be electrically connected to the loop 204. In some embodiments, the protrusion 228 may include a conductive passage 230 that electrically connects the loop 204 to electrical components within the earpiece 222. In some embodiments, the loop 204 may be formed of a conductive material, allowing signals to be transmitted between components within the earpieces 222 and 226 via the loop 204.

[0136] Figure 2C Another sectional view of the rod housing 116 according to section line BB is shown. Specifically, Figure 2C The diagram illustrates how the coil loop 204 engages with a pulley 232 within the stem housing 216. The pulley 232 minimizes any friction caused by the movement of the earpiece 222 closer to or further away from the stem housing 216. Alternatively, the coil loop 204 may be wired through a static bearing within the stem housing 216.

[0137] Figure 2D Another perspective view of the headphones 200 is shown. In this view, it can be seen that the first side 204-1 and the second side 204-2 of the loop 204 are laterally offset as they cross from one side of the headband 202 to the other. This is accomplished by gradually offsetting the opening defined by the cable guide 210 such that when the sides 204-1 and 204-2 reach the post housing 218, the second side 204-2 is centered and aligned with the post 208, as shown. Figure 2E As shown in the image.

[0138] Figure 2E This illustrates how the second side 204-2 engages with the protrusion 234. Because the stems 206 and 208 are attached to the corresponding first and second sides of the loop 204, pushing the earpiece 226 toward the stem housing 218 also causes the earpiece 222 to be pushed toward the stem housing 216. Figures 2A to 2E Another advantage of the configuration shown is that the loop 204 is always under stress regardless of the direction of travel of the rods 206 and 208. This keeps the amount of force required to extend or retract the handsets 222 and 226 consistent, regardless of direction.

[0139] Figures 2F to 2GA perspective view of the earphone 250 is shown. The earphone 250 is similar to the earphone 200, except that it uses only a single leaf spring 252 to connect the stem housing 254 to the stem housing 256. In this embodiment, the coil loop 258 can be positioned on either side of the leaf spring 252. Instead of being positioned directly below one side of the coil loop 258, the stems 262 and 260 can be positioned directly between the two sides of the coil loop 258 and connected to one side of the coil loop 258 via the arms of the stems 260 and 262.

[0140] Figure 2H and Figure 2I A cross-sectional view of the interior of the rod housings 254 and 256 is shown. Figure 2H A cross-sectional view of the rod housing 254 according to section line DD is shown. Figure 2H The diagram illustrates how the rod 260 may include a laterally projecting arm 268 that engages the coil loop 258. In this manner, the laterally projecting arm 268 connects the rod 260 to the coil loop 258, such that when the earpiece 264 is moved, the earpiece 266 is held in an equivalent position. Figure 2I A cross-sectional view of the rod housing 256 according to section line EE is shown. Figure 2I The diagram also shows how the loop 258 can be arranged within the post housing 256 by pulleys 270 and 272. By arranging the loop 258 above the post 262, any interference between the loop 258 and the post 206 is avoided.

[0141] Figures 3A to 3C It shows the configuration for resolving Figures 1A to 1B Another headphone solution to the problem. Figure 3A The diagram shows an earphone 300 including a headband assembly 302. The headband assembly 302 is engaged with earpieces 304 and 306 via posts 308 and 310. The size and shape of the headband assembly 302 can vary depending on how much adjustability the earphone 300 is desired.

[0142] Figure 3B A cross-sectional view of the headband assembly 302 is shown when the headphones 300 are extended to their maximum size. Specifically, Figure 3B The diagram illustrates how the headband assembly 302 includes a gear 312 configured to engage teeth defined at the ends of each of the posts 308 and 310. In some embodiments, the posts 308 and 310 can be prevented from being fully pulled out of the headband assembly 302 by the spring pins 314 and 316 by engaging the openings defined by the posts 308 and 310.

[0143] Figure 3C A cross-sectional view of the headband assembly 302 is shown when the headphones 300 are retracted to a smaller size. Specifically, Figure 3CThis illustrates how gear 312 can be shifted to another lever based on any movement of lever 308 or lever 310 to keep the positions of levers 308 and 310 synchronized. In some embodiments, the stiffness of the housing defining the outer surface of the headband assembly 302 can be selected to match the stiffness of levers 308 and 310 to provide the user of the headphones 300 with a more consistent headband feel.

[0144] Figure 3D An alternative embodiment of stems 308 and 310 is shown. The covers concealing the ends of stems 308 and 310 have been removed to more clearly show the features of the mechanism synchronizing the positions of the stems. Stem 308 defines an opening 318 extending through a portion of stem 308. One side of opening 318 has teeth configured to engage a gear 320. Similarly, stem 310 defines an opening 322 extending through a portion of stem 310. One side of opening 322 has teeth configured to engage a gear 320. Because the gears 320 engage on opposite sides of openings 318 and 322, any movement of one of stems 308 and 310 will cause the other stem to move. Thus, the handsets positioned at the ends of each of stems 308 and 310 are synchronized.

[0145] Figure 3E A top view of posts 308 and 310 is shown. Figure 3E The outline of a cover 324 is also shown, which is used to conceal the gear drive opening defined by the rods 308 and 310 and to control the movement of the ends of the rods 308 and 310. Figure 3F A cross-sectional side view of the stems 308 and 310, covered by a cap 324, is shown. Gear 320 may include a bearing 326 for defining a rotational axis of gear 320. In some embodiments, the top of bearing 326 may protrude from cap 324, allowing a user to adjust the earpiece position by manually rotating bearing 326. It should be understood that the user can also adjust the earpiece position by simply pushing or pulling on one of the stems 308 and 310.

[0146] Figure 3GA plan view of another handset synchronization system is shown, which utilizes a loop 328 (rectangular shape only to illustrate the position of the headband 330 and should not be construed as merely illustrative) within a headband 330 to synchronize the distance between each of the handsets 304 and 306 and the headband 330. Stereowires 332 and 334 connect the respective handsets 304 and 306 to the loop 328. Stereowires 332 and 334 may be made of metal and welded to opposite sides of the loop 328. Because stemowires 332 and 334 are connected to opposite sides of the loop 328, movement of the handset 306 in direction 336 causes stemowire 332 to move in direction 338. Therefore, moving the handset 306 closer to the headband 330 also moves stemowire 332, resulting in the handset 304 being closer to the headband 330. In addition to showing the new positions of the earpieces 304 and 306 after they have been moved closer to the headband 330, Figure 3H It is also shown how moving the earpiece 304 in direction 340 automatically moves the earpiece 306 further away from the headband 330 in direction 342. Although not shown, it should be understood that the headband 330 may include various reinforcing members to maintain the loops 328 and the bar cords 332 and 334 in the shape shown.

[0147] Figures 3I to 3J It shows the relationship with Figures 3G to 3H A flat schematic diagram of another earpiece synchronization system similar to the one shown. Figure 3I This illustrates how the ends of posts 344 and 346 can be directly joined to each other without an intermediary loop. A similar result can be achieved without the need for an additional loop structure by extending posts 344 and 346 into a pattern with a shape similar to loop 328. Movement of posts 344 and 346 is assisted by reinforcing members 348, 350, and 352, which help prevent buckling of posts 344 and 346 when adjusting the position of handsets 304 and 306. Reinforcing members 348-352 define channels through which posts 344 and 346 pass smoothly. These channels are particularly helpful in bent positions of posts 344 and 346. While not defining bent channels, reinforcing member 352 still plays a crucial role in restricting the direction of travel of the ends of posts 344 and 346 to directions 354 and 356. Movement in direction 356 causes the handset to move toward headband 330, as... Figure 3J As shown. The movement in direction 354 causes the earpieces 304 and 306 to move further away from the headband 330.

[0148] Figures 3K to 3L It shows that it is suitable for binding Figures 3G to 3J A cross-sectional view of the earpiece 360 ​​of any of the earpiece synchronization systems shown. Figure 3KEarphone 360 ​​is shown, with the earpiece retracted and stem lines 332 and 334 extending out of headband 330 to engage and synchronize the position of stem assembly 362 with that of stem assembly 364. Stereo 334 is illustrated as a support structure 366 coupled within stem assembly 364, allowing extension and retraction of stem 334 to maintain synchronization between stem assembly 362 and stem assembly 364. As shown, stem assembly 362 is positioned within a channel defined by headband 330, thereby allowing movement of stem assembly 362 relative to headband 330. Figure 3K The diagram also illustrates how the data synchronization cable 368 can extend through the headband 330 and wrap around a portion of both the stem wires 334 and 332. By wrapping around the stem wires 332 and 334, the data synchronization cable 356 can act as a reinforcing member to prevent buckling of the stem wires 332 and 334. The data synchronization cable 356 is generally configured to exchange signals between the earpieces 304 and 306 to maintain accurate audio synchronization during playback operation of the headphones 360.

[0149] Figure 3L This illustrates how the coil configuration of the data synchronization cable 368 adapts to the extensions of the pole assemblies 362 and 364. The data synchronization cable 368 may have a coated outer surface, allowing the pole wires 332 and 334 to slide through the central opening defined by the coil. Figure 3L It also shows how the handsets 304 and 306 maintain the same distance from the center portion of the headband 330.

[0150] Figures 3M to 3N It shows Figures 3G to 3H The image shows a perspective view of the handset synchronization system in the retracted and extended positions, as well as the data synchronization cable 368. Figure 3M The diagram illustrates how the post line 332 includes an attachment feature 370 that at least partially surrounds a portion of the loop 328. Thus, the post line 332, post line 334, and support structure 366 move together with the loop 328. Figure 3M The diagram also shows a dashed line illustrating how the headband 330's covering may at least partially conform to the loop 328, the bar cord 332, and the bar cord 334.

[0151] Figure 3O A portion of the headgear structure 372 is shown, along with how the earpiece synchronization system can be routed through the reinforcing member 374 of the headgear structure 372. The reinforcing member 374 helps guide the wire loop 328 and the rod wire 332 along the desired path. In some embodiments, the headgear structure 372 may include a spring mechanism that helps hold the earpiece securely to the user's ear.

[0152] Off-center pivot earpiece

[0153] Figures 4A to 4B A front view of an earphone 400 with an eccentric pivot earpiece is shown. Figure 4A A front view of an earphone 400 including a headband assembly 402 is shown. In some embodiments, the headband assembly 402 may include an adjustable band and posts for customizing the size of the earphone 400. Each end of the headband assembly 402 is shown attached to the upper part of the earpiece 404. This differs from conventional designs that place the pivot point at the center of the earpiece 404, allowing the earpiece to pivot naturally in a direction that allows the earpiece 404 to move to an angle parallel to the surface of the earpiece 404 relative to the user's head. Unfortunately, this type of design typically requires a bulky arm extending to either side of the earpiece 404, significantly increasing the size and weight of the earpiece 404. By positioning the pivot point 406 near the top of the earpiece 404, the associated pivot mechanism components can be encapsulated within the earpiece 404.

[0154] Figure 4B An exemplary range of motion 408 for each earpiece 404 is shown. The range of motion 408 can be configured to accommodate most users based on studies performed using measurements of average head size. This more compact configuration still performs the same functions as the more conventional configuration described above, which involves applying force through the center of the earpiece and establishing an acoustic seal. In some embodiments, the range of motion 408 may be approximately 18 degrees. In some embodiments, the range of motion 408 may not have a definite endpoint, but rather becomes increasingly difficult to deform as it moves further from the neutral position. The pivoting mechanism component may include a spring element configured to apply a moderate holding force to the user's ear while the headphones are in use. The spring element may also allow the earpiece to return to a neutral position once the headphones 400 are no longer worn.

[0155] Figure 5AAn exemplary pivoting mechanism 500 for use in the upper part of the earpiece is shown. The pivoting mechanism 500 can be configured to accommodate movement about two axes, thereby allowing adjustment of the roll and yaw of the earpiece 404 relative to the headband assembly 402. The pivoting mechanism 500 includes a rod 502 that is coupled to the headband assembly. One end of the rod 502 is positioned within a bearing 504, thereby allowing the rod 502 to rotate about a yaw axis 506. The bearing 504 also couples the rod 502 to a torsion spring 508 that resists rotation of the rod 502 about a roll axis 510 relative to the earpiece 404. Each of the torsion springs 508 can also be coupled to a mounting block 512. The mounting block 512 can be secured to the inner surface of the earpiece 404 by fasteners 514. The bearing 504 can be rotatably coupled to the mounting block 512 by a bushing 516, thereby allowing the bearing 504 to rotate relative to the mounting block 512. In some implementations, the roll and yaw axes may be substantially orthogonal relative to each other. In this context, substantially orthogonal means that while the angle between the two axes may not be exactly 90 degrees, the angle between the two axes will remain between 85 and 95 degrees.

[0156] Figure 5A A magnetic field sensor 518 is also shown. The magnetic field sensor 518 may take the form of a magnetometer or a Hall effect sensor, capable of detecting the movement of a magnet within the pivoting mechanism 500. Specifically, the magnetic field sensor 518 may be configured to detect the movement of the rod 502 relative to the mounting block 512. Thus, the magnetic field sensor 518 may be configured to detect when the headphones associated with the pivoting mechanism 500 are worn. For example, when the magnetic field sensor 518 takes the form of a Hall effect sensor, rotation of the magnet coupled to the bearing 504 can cause the polarity of the magnetic field emitted by the magnet to saturate the magnetic field sensor 518. The saturation of the Hall effect sensor by the magnetic field causes it to send signals to other electronic devices within the headphones 400 via flexible circuitry 520.

[0157] Figure 5BA pivoting mechanism 500 is shown positioned behind the pad 522 of the earpiece 404. This allows the pivoting mechanism 500 to be integrated within the earpiece 404 without impacting spaces that are typically kept open to accommodate the user's ear. A close-up view 524 shows a cross-sectional view of the pivoting mechanism 500. Specifically, close-up view 524 shows a magnet 526 positioned within a fastener 528. The magnet 526 rotates as the rod 502 rotates about the roll axis 510. A magnetic field sensor 518 can be configured to sense the rotation of the field emitted by the magnet 526 during rotation. In some embodiments, the signal generated by the magnetic field sensor 518 can be used to activate and / or deactivate the earphone 400. This is particularly effective when the neutral state of the earpiece 404 corresponds to the bottom of each earpiece 404 being angled toward the user, such that the earpiece 404 rotates away from the user's head when worn by most users. By designing the earphone 400 in this way, the rotation of the magnet 526 away from its neutral position can serve as a trigger indicating that the earphone 400 is in use. Correspondingly, the movement of the magnet 526 back to its neutral position can serve as an indicator that the earphone 400 is no longer in use. The power state of the earphone 400 can be matched with these indicators of energy saving when the earphone 400 is not in use.

[0158] Figure 5B Close-up view 524 also shows how the rod 502 is capable of torsion within the bearing 504. The rod 502 is coupled to a threaded cap 530, thereby allowing the rod 502 to torsion within the bearing 504 about the yaw axis 506. In some embodiments, the threaded cap 530 may define a mechanical stop that limits the range of motion through which the rod 502 can torsionally pass. A magnet 532 is disposed within the rod 502 and configured to rotate with the rod 502. A magnetic field sensor 534 may be configured to measure the rotation of the magnetic field emitted by the magnet 532. In some embodiments, a processor receiving sensor readings from the magnetic field sensor 534 may be configured to change the operating parameters of the headset 400 in response to a threshold amount of change in the angular orientation of the magnet 532 relative to the yaw axis indicated by the sensor readings.

[0159] Figure 6AA perspective view of another pivoting mechanism 600 is shown, configured to be fitted within the top of the earpiece 404 of the headphones. The overall shape of the pivoting mechanism 600 is configured to conform to the available space within the top of the earpiece. The pivoting mechanism 600 utilizes leaf springs instead of torsion springs to counteract movement of the earpiece 404 in the direction indicated by arrow 601. The pivoting mechanism 600 includes a rod 602 having one end disposed within a bearing 604. The bearing 604 allows the rod 602 to rotate about a yaw axis 605. The bearing 604 also connects the rod 602 to a first end of a leaf spring 606 via a spring rod 608. The second end of each leaf spring 606 is connected to a corresponding spring anchor 610. The spring anchors 610 are shown as transparent so that the position where the second end of each leaf spring 606 engages the central portion of the spring anchor 610 can be seen. This positioning allows the leaf springs 606 to bend in two different directions. A spring anchor 610 connects the second end of each leaf spring 606 to the earpiece housing 612. Thus, the leaf springs 606 form a flexible connection between the rod 602 and the earpiece housing 612. The pivoting mechanism 600 may also include a cable 614 configured to route electrical signals between the two earpieces 404 via a headband assembly 402 (not shown).

[0160] Figures 6B to 6D The range of motion of the earpiece 404 is shown. Figure 6B The earpiece 404 is shown in a neutral state, with the leaf spring 606 in an undeflected state. Figure 6C The leaf spring 606 is shown deflecting in a first direction, and Figure 6D The leaf spring 606 is shown deflecting in a second direction opposite to the first direction. Figures 6C to 6D It also shows how the area between the pad 522 and the earpiece housing 612 can accommodate the deflection of the leaf spring 606.

[0161] Figure 6E An exploded view of the pivoting mechanism 600 is shown. Figure 6E A mechanical stop is shown that controls the amount of rotation that may occur about the yaw axis 605. The rod 602 includes a protrusion 616 configured to travel within a channel defined by an upper yaw bushing 618. As shown, the channel defined by the upper yaw bushing 618 has a length that allows for rotation greater than 180 degrees. In some embodiments, the channel may include a pawl configured to define a neutral position for the earpiece 404. Figure 6E A portion of a rod 602 that can be adapted to a yaw magnet 620 is also shown. The magnetic field emitted by the magnet 620 can be detected by a magnetic field sensor 622. The magnetic field sensor 622 can be configured to determine the angle of rotation of the rod 602 relative to the rest of the pivot mechanism 600. In some embodiments, the magnetic field sensor 622 may be a Hall effect sensor.

[0162] Figure 6E Also shown is a roller magnet 624 and a magnetic field sensor 626, which can be configured to measure the deflection of the leaf spring 606. In some embodiments, the pivoting mechanism 600 may also include a strain gauge 628 configured to measure the strain generated within the leaf spring 606. The strain measured in the leaf spring 606 can be used to determine how much and in which direction the leaf spring is being deflected. Thus, a processor receiving sensor readings recorded by the strain gauge 628 can determine whether the leaf spring 606 is bent and in which direction. In some embodiments, the readings received from the strain gauge can be configured to change the operating state of the headphones associated with the pivoting mechanism 600. For example, the operating state can be changed from a playback state where media is being presented by a speaker associated with the pivoting mechanism 600 to a standby or inactive state in response to readings from the strain gauge. In some embodiments, when the leaf spring 606 is in an undeflected state, this can indicate that the headphones associated with the pivoting mechanism 600 are not being worn by a user. In other embodiments, the strain gauge can be positioned on the headband spring. For this reason, stopping playback based on this input is very convenient, as it allows the user to maintain the position in the media file until the headphones are placed back on the user's head, at which point the headphones can be configured to resume playback of the media file. The seal 630 can close the opening between the rod 602 and the outer surface of the earpiece to prevent the entry of foreign particles that could obstruct the operation of the pivoting mechanism 600.

[0163] Figure 6F A perspective view of another pivoting mechanism 650 is shown, which differs from pivoting mechanism 600 in some respects. Leaf spring 652 has a different orientation than leaf spring 606 of pivoting mechanism 600. Specifically, leaf spring 652 is oriented at approximately 90 degrees different from leaf spring 606. This results in the thickness dimension of leaf spring 652 resisting rotation of the earpiece associated with pivoting mechanism 650. Figure 6F Flexible circuitry 654 and board-to-board connector 656 are also shown. The flexible circuitry can electrically connect a strain gauge positioned on leaf spring 652 to a circuit board or other conductive path on pivoting mechanism 650. Pivoting mechanism 650 may also include an electrical plug 658 configured to insert into a socket associated with a headband, the plug carrying electrical signals between the handsets. Electrical plug 658 may include multiple electrical contacts 659 for transmitting different types of power and / or signals through electrical plug 658.

[0164] Figure 6GAnother pivot assembly 660 is shown, attached to the handset housing 612 via fasteners 662 and brackets 663. The pivot assembly 660 may include a plurality of helical springs 664 arranged side-by-side. Thus, the helical coils 664 can act in parallel to increase the amount of resistance provided by the pivot assembly 660. The helical springs 664 are held in place and stabilized by pins 666 and 668. The actuator 670 transfers any force received from the rotation of the rod base 672 to the helical springs 664. Thus, the helical springs 664 can establish the desired amount of resistance to the rotation of the rod base 674.

[0165] Figures 6H to 6I A pivot assembly 660 is shown, with one side removed to illustrate rotation of the rod base 674 in different positions. Specifically, Figures 6H to 6I This illustrates how rotation of the rod base 672 leads to rotation of the actuator 670 and compression of the helical spring 664.

[0166] Figure 6J A cross-sectional perspective view of the pivot assembly 660 disposed within the earpiece housing 612 is shown. In some embodiments, the stem base 672 may include a bearing 674, as shown, for reducing friction between the stem base 672 and the actuator 670. Figure 6J The diagram also illustrates how bracket 663 can define a bearing for securing pin 666 in place. Pins 666 and 668 are also shown, defining flat recesses for securely holding coil spring 664 in place. In some embodiments, the flat recess may include a protrusion extending into the central opening of coil spring 664.

[0167] Figures 6K to 6L A partial cross-sectional side view of a pivot assembly 660 positioned within the earpiece housing is shown, with the coil spring 664 in a relaxed and compressed state. Specifically, the movement from... Figure 6K The motion experienced by actuator 670 when the first position shifts to the second position with maximum deflection. Figure 6K and Figure 6L Mechanical stop 676 is also shown, which helps limit the amount of rotation that the earpiece housing can achieve relative to the stem base.

[0168] Figures 6M to 6N Side views of two different rotational positions of the rod base 672, isolated from its pivoting assembly, are shown. Specifically, two permanent magnets 678 and 680, rigidly coupled to the rod base 672, are shown. The permanent magnets 678 and 680 emit magnetic fields with polarities oriented in opposite directions. A magnetic field sensor 682 is mounted to the earpiece housing 612 such that the magnetic field sensor 682 remains stationary relative to the rod base 672 during rotation of the rod base 672 about a rotation axis 684.

[0169] Thus, in Figure 6M At the first position shown, the magnetic field sensor 682 is positioned near the permanent magnet 680, and... Figure 6N At the second position shown, the magnetic field sensor 682 is positioned near the permanent magnet 678. The opposite polarities of the permanent magnets 678 and 682 allow the magnetic field sensor 682 to distinguish between the two positions shown. In some embodiments, these positions may vary by about 20 degrees; however, the total range of motion of the rod base 672 may vary between about 10 and 30 degrees. In some embodiments, the magnetic field sensor 682 may take the form of a magnetometer or a Hall effect sensor. Depending on the sensitivity of the magnetic field sensor 682, it may be configured to measure the approximate angle of the rod base 672 relative to the earpiece housing 612. For example, in the case where the shown rotational positions differ by 20 degrees, a 10-degree intermediate position can be inferred from the sensor readings from the magnetic field sensor 682, at which the magnetic field direction changes from one direction to another. In some embodiments, the magnetic field sensor 682 may be configured to operate only with a single permanent magnet and is configured to determine the rotational position of the rod base 672 solely based on the magnetic field strength detected by the magnetic field sensor 682. It should be noted that, in an alternative embodiment, the magnetic field sensor 682 may be coupled to the rod base 672, and the permanent magnets 678 and 680 may be coupled to the earpiece housing, thereby allowing the magnetic field sensor 682 to move within the earpiece housing.

[0170] Low elasticity ratio hoop

[0171] Figure 7ASeveral positions of the spring clamp 700 suitable for use in a headband assembly are shown. The spring clamp 700 may have a low elasticity ratio, causing the force generated by the clamp in response to deformation of the spring clamp 700 to change slowly with displacement. Unfortunately, a low elasticity ratio also means that the spring must undergo a relatively large displacement before applying a specific amount of force. The spring clamp 700 is illustrated in different positions 702, 704, 706, and 708. Position 702 may correspond to the spring clamp 700 being in a neutral state, in which the spring clamp 700 does not apply any force. At position 704, the spring clamp 700 may begin to apply a force that pushes the spring clamp 700 backward toward its neutral state. Position 706 may correspond to the position where a user with a smaller head bends the spring clamp 700 when using headphones associated with the spring clamp 700. Position 708 may correspond to the position where a user with a larger head bends the spring clamp 700. The displacement between positions 702 and 706 can be large enough for the spring clamp 700 to exert a force sufficient to keep the headphones associated with it from falling off the user's head. Furthermore, due to the low elasticity ratio, the force exerted by the spring clamp 700 at position 708 can be small enough that the use of the headphones associated with the spring clamp 700 will not cause user discomfort. Generally, the lower the elasticity ratio of the spring clamp 700, the smaller the variation in the force exerted by the spring clamp 700. Thus, the use of a low elasticity ratio spring clamp 700 allows for a more consistent user experience for users with different head sizes.

[0172] Figure 7B A graph is shown illustrating how the spring force varies with the displacement of the spring clamp 700 based on the spring ratio. Line 710 can represent the spring clamp 700 with its neutral position equivalent to position 702. As shown, this allows the spring clamp 700 to have a relatively low spring ratio, thus still applying the desired force in the middle of the range of motion for a particular pair of headphones. Line 712 can represent the spring clamp 700 with its neutral position equivalent to position 704. As shown, a higher spring ratio is required to apply the desired amount of force in the middle of the desired range of motion. Finally, line 714 represents the spring clamp 700 with its neutral position equivalent to position 706. Setting the spring clamp 700 to have a profile consistent with line 714 will result in the spring clamp 700 applying no force at the minimum position of the desired range of motion and applying more than twice the amount of force at the maximum position compared to the spring clamp 700 with a profile consistent with line 710. While configuring the spring clamp 700 to travel a greater displacement before the desired range of motion has a clear benefit when wearing headphones associated with the spring clamp 700, it may not be desirable for the headphones to return to position 702 when worn around the user's neck. This could result in the headphones uncomfortablely fitting against the user's neck.

[0173] Figures 8A to 8B A solution is shown to prevent discomfort caused by the headphones 800, which utilizes a low-elasticity spring clamp, wrapping too tightly around the user's neck. The headphones 800 include a headband assembly 802 that engages with the earpiece 804. The headband assembly 802 includes a compression strap 806 that is attached to the inward-facing surface of the spring clamp 700. Figure 8A A spring clamp 700 is shown at position 708 corresponding to the maximum deflection position of the earphone 800. The force applied by the spring clamp 700 can act as a restraining factor against stretching the earphone 800 beyond this maximum deflection position. In some embodiments, the outward-facing surface of the spring clamp 700 may include a second compression band configured to counteract deflection of the spring clamp 700 through position 708. As shown, the steering knuckle 808 of the compression band 806 is almost ineffective when the spring clamp is in position 708 because none of the side surfaces of the steering knuckle 808 are in contact with adjacent steering knuckles 808.

[0174] Figure 8B The spring clamp 700 is shown in position 706. At position 706, the steering knuckle 808 contacts the adjacent steering knuckle 808 to prevent further displacement of the spring clamp 700 toward positions 704 or 702. In this way, the compression band 806 can prevent the spring clamp 700 from pressing on the neck of the user of the headphones 800, while maintaining the beneficial effect of the low elasticity ratio of the spring clamp 700. Figures 8C to 8D This illustrates how individual and distinct steering knuckles 808 can be arranged along the underside of spring clamp 700 to prevent spring clamp 700 from returning to position 706.

[0175] Figures 8E to 8F This demonstrates how using a spring to control the movement of the headband assembly 802 relative to the earpiece 804 can alter the amount of force exerted by the headphones 800 on the user compared to the force applied by the spring clamp 700 alone. Figure 8E The force 810 applied by the spring clamp 700 and the force 812 applied by the spring are shown to control the movement of the earpiece 804 relative to the headband assembly 802. Figure 8F Exemplary curves are shown illustrating how the forces 810 and 812 provided by at least two different springs can vary based on spring displacement. Force 810 does not begin to take effect until just before the desired range of motion, because the compression band prevents the spring clamp 700 from returning all the way to the neutral state. For this reason, the amount of force imparted by force 810 starts at a much higher level, resulting in smaller variations in force 810. Figure 8F The results of force 814, and the series action of forces 810 and 812, are also shown. By arranging the springs in series, the rate of force change generated when the headphones 800 change shape to accommodate the size of the user's head is reduced. In this way, the dual-spring configuration helps to provide a more consistent user experience to a user library that includes a wide variety of head shapes.

[0176] Figures 8G to 8H This demonstrates another way to limit the range of motion of a pair of headphones 850 using a low elasticity ratio hoop 852. Figure 8G The cable 856 is shown in a relaxed state due to the earpiece 854 being pulled open. The range of motion of the low elasticity ratio hoop 852 can be limited by the cable 854, which performs a function similar to that of the compression band 806, engaging due to tension rather than compression. The cable 854 is configured to extend between the earpieces 856 and is connected to each of the earpieces 856 via an anchoring feature 858. The cable 854 can be held above the low elasticity ratio hoop 852 by a line guide 860. The line guide 860 can be similar to... Figures 2A to 2G The wire guide 210 shown differs in that the wire guide 860 is configured to lift the cable 854 above the low elasticity ratio hoop 852. Bearings in the wire guide 860 prevent the cable 854 from tangling or becoming undesirably tangled. It should be noted that the cable 854 and the low elasticity ratio hoop 852 may be covered by a decorative cap. It should also be noted that in some embodiments, the cable 854 may be... Figures 2A to 2G The illustrated implementation schemes combine to produce headphones capable of synchronizing earpiece position and controlling the range of motion of the headphones.

[0177] Figure 8H This demonstrates how the cable 854 tightens and eventually stops the earpieces 856 from moving closer together when they are brought closer together. This maintains a minimum distance 862 between the earpieces 856, allowing the headset 850 to be worn around the necks of a wide range of users without causing excessive pressure on their necks.

[0178] Left / Right ear test

[0179] Figure 9AAn earpiece 902 of an earphone positioned above a user's ear 904 is shown. The earpiece 902 includes at least proximity sensors 906 and 908. The proximity sensors 906 and 908 are positioned within a recess defined by the earpiece 902, such that they return detectably different readings depending on which ear the earpiece 902 is positioned above. This is possible because the geometry of most users' ears is asymmetrical. In some embodiments, the proximity sensor 906 includes a light emitter configured to emit infrared light, and a light receiver configured to detect the emitted light reflected from the user's ear 904. A processor incorporated within or electrically coupled to the proximity sensor 906 can be configured to determine the distance between the proximity sensor 906 and the proximal portion of the ear 904 by measuring the amount of time it takes for the infrared pulse emitted by the light emitter to return to the light detector. In some embodiments, the proximity sensor 906 may also be configured to map the contours of a portion of the ear. This can be accomplished using multiple transmitters configured to emit light of different frequencies in different directions. Sensor readings collected by one or more light receivers configured to detect and distinguish different frequencies can then be used to determine the distance between the proximity sensor 906 and different locations on the ear. In some embodiments, when even more detail about the shape of the ear and its position relative to the earpiece is needed, the proximity sensor 906 can be distributed around the circumference of the earpiece 902. For example, in some embodiments, it may be desirable to identify the rotational position of the ear relative to the earpiece, in addition to identifying which ear the earpiece is positioned on. The sensor readings can be of sufficiently high quality to identify certain features of the ear 904, such as, for example, the earlobe or auricle. In some embodiments, and as shown, the angle at which infrared light is emitted from the proximity sensor 908 can differ from the angle at which infrared light is emitted from the proximity sensor 906. This increases the likelihood of detecting the side of the ear or the user's head. As shown, the proximity sensor 908 will be able to achieve earlier detection because it points further outward from inside the earpiece 902. The proximity sensor 906, with a shallower angle, will be able to cover a larger area of ​​the user's ear 904. In some implementations, the capacitive sensor array may be positioned directly below the surface of the earpiece 902 and configured to identify protruding features of the ear that are in contact with or close to the surface 912 of the earpiece 902.

[0180] Figure 9BThe location of the capacitive sensor 910 is shown below surface 912 and near the ear contour 914 associated with ear 904. Ear contour 914 represents those contours of ear 904 most likely to protrude closest to the array of capacitive sensors 910. The capacitive sensor 910 can be configured to identify portions of the detected contours of ear 904 to determine which ear the earpiece 902 is positioned on and any rotation of the earpiece 902 relative to ear 904. Figure 9B The diagram also indicates how the surface 912 and the array of capacitive sensors 910 define the opening 916 or perforation through which audio waves can pass substantially without attenuation. While the array of capacitive sensors 910 is shown positioned only below the central portion of the surface 912, it should be understood that in some embodiments, the array of capacitive sensors 912 may be arranged in a different pattern, resulting in greater or lesser coverage. For example, in some embodiments, the capacitive sensors 910 may be distributed across most of the surface 912 to more completely characterize the shape and orientation of the ear 904. In some embodiments, the position and orientation data captured by the capacitive sensors 910 and / or proximity sensors 906 / 908 can be used to optimize the audio output from a speaker disposed within the earpiece 902. For example, an earpiece with an audio driver array may be configured to actuate only those audio drivers centered on or near the ear 904.

[0181] Figure 10A A top view of an exemplary head of a user 1000 wearing headphones 1002 is shown. The earpiece 1004 is depicted on the opposite side of the user 1000. The headband connecting the earpiece 1004 is omitted to show the features of the user 1000's head in more detail. As shown, the earpieces 1004 are configured to rotate about a yaw axis, so they can be positioned flush against the user 1000's head and oriented slightly towards the user 1000's face. In studies of larger user groups, it has been found that, on average, the earpieces 1004 are offset above the x-axis when positioned above the user's ear, as shown. Furthermore, for over 99% of users, the angle of the earpieces 1004 relative to the x-axis is above the x-axis. This means that only statistically unrelated portions of the user of headphones 1002 have a head shape that orients the earpieces 1004 forward from the x-axis. Figure 10B A front view of the headset 1002 is shown. Specifically, Figure 10B It shows how the yaw rotation axis 1006 associated with the earpiece 1004 and the earpiece 1004 are both oriented toward the same side of the headband 1008 that engages the earpiece 1004.

[0182] Figures 10C to 10D A top view of the earphone 1002 is shown, along with how the earpiece 1004 is able to rotate about the yaw rotation axis 1006. Figures 10C to 10DThe diagram also shows the handsets 1004 engaged with a headband 1008. The headband 1008 may include a yaw position sensor 1010, which can be configured to determine the angle of each handset 1004 relative to the headband 1008. This angle can be measured for a neutral position of the handset relative to the headband 1008. The neutral position can be a position where the handset 1004 is oriented directly toward the central region of the headband 1008. In some embodiments, the handset 1004 may have a spring that returns the handset 1004 to the neutral position when no external force is applied. The angle of the handset relative to the neutral position can be changed in a clockwise or counterclockwise direction. For example, in... Figure 10C In this configuration, earpiece 1004-1 is biased counterclockwise about rotation axis 1006-1, and earpiece 1004-2 is biased clockwise about rotation axis 1006-2. In some embodiments, sensor 1010 may be a time-of-flight sensor configured to measure angular changes in earpiece 1004. The associated pattern indicated by sensor 1010 may represent an optical pattern that allows for precise measurement of the amount of rotation of each earpiece. In other embodiments, sensor 1010 may employ a combination of... Figure 5B and picture Figure 6E The described form is a Hall effect sensor or magnetic field sensor. In some embodiments, sensor 1010 can be used to determine which ear each earpiece is covering for the user. Since earpieces 1004 are known to be oriented behind the x-axis for almost all users, when sensor 1010 detects two earpieces 1004 oriented towards one side of the x-axis, earphone 1002 can determine which earpieces are on which ear. For example, Figure 10C The diagram shows a configuration where earpiece 1004-1 can be positioned on the user's left ear and earpiece 1004-2 on the user's right ear. In some embodiments, circuitry within the earphone 1002 can be configured to adjust the audio channel so that the correct channel is delivered to the correct ear.

[0183] Similarly, Figure 10D The diagram shows a configuration with earpiece 1004-1 on the user's right ear and earpiece 1004-2 on the user's left ear. In some embodiments, when the earpieces are not oriented towards the same side of the x-axis, the headset 1002 may request further input before changing the audio channel. For example, when both earpieces 1004-1 and 1004-2 are detected as biased in a clockwise direction, the processor associated with the headset 1002 may determine that the headset 1002 is currently not in use. In some embodiments, the headset 1002 may include an override switch for cases where the user wishes to flip the audio channel independently of the L / R audio channel routing logic associated with the yaw position sensor 1010. In other embodiments, one or more additional sensors may be activated to confirm the position of the headset 1002 relative to the user.

[0184] Figures 10E to 10F A flowchart is shown, which describes the control methods that can be executed when roll and / or yaw of the earpiece relative to the headband is detected. Figure 10E A flowchart is shown illustrating the response to detected rotation of the earpieces about a yaw axis relative to the headband. The yaw axis may extend through a point located near the interface between each earpiece and the headband. When the user is using the headphones, the yaw axis may be substantially parallel to a vector defining the intersection of the user's sagittal and coronal anatomical planes. At 1052, rotation of the earpieces about the yaw axis may be detected by a rotation sensor associated with a pivoting mechanism. In some embodiments, the pivoting mechanism may be similar to pivoting mechanism 500 or pivoting mechanism 600, which shows yaw axes 506 and 605. At 1054, it may be determined whether a threshold associated with rotation about the yaw axis has been exceeded. In some embodiments, the yaw threshold may be met at any time when the earpieces pass through a position where the ear-facing surfaces of the two earpieces can directly face each other. At 1056, if at least one of the earpieces has passed the threshold and both earpieces are determined to be oriented in the same direction, the audio channels routed to the two earpieces may be exchanged. In some embodiments, the user may be notified of the change in audio channels. In some implementations, the amount of roll detected by the pivoting mechanism can be used as a factor in determining how to allocate audio channels.

[0185] Figure 10FA flowchart is shown illustrating a method for altering the operating state of the headphones based on sensor readings from one or more sensors. At 1062, prior to the final packaging operation, the headphones can be placed in a sleep state, consuming little or no power. This allows headphones 1062 to retain a significant amount of battery power upon delivery. Delivery personnel can perform a special procedure to de-sleep the headphones. For example, removing the data connector engaged with the headphones' charging port triggers the de-sleep process. At 1063, the headphones can be placed in a suspended state whenever they have been unused for a threshold amount of time. In the suspended state, the sensor polling rate can be significantly reduced to further conserve power. In some embodiments, the headphones may require a longer time than normal to recognize a user attempting to use them. At 1064, a strain gauge or capacitive sensor can be used to identify the placement of the headphones on the user's head. In some embodiments, the method may include returning to the suspended state at 1063 when a motion timeout occurs or the strain gauge indicates that the headphones are not being worn. At 1065, a capacitive or proximity sensor can be used to sense the presence and / or orientation of the ear within the earpiece. At point 1066, once the orientation of the headphones on the user's head is identified, the input controls are activated. At point 1067, media playback can begin by routing the audio channel, received wirelessly or via a cable, to the corresponding earpiece. Removing the headphones from the user's ears results in a return to point 1064, where the sensors can then proceed through various steps to correctly identify the earpiece position and orientation.

[0186] Figure 10G A system-level block diagram of a computing device 1070, according to some embodiments, for implementing the various components described herein is shown. Specifically, this detailed view shows what can be included... Figures 10A to 10D The various components of the earphone 1002 shown. For example... Figure 10GAs shown, computing device 1070 may include processor 1072 representing a microprocessor or controller for controlling the overall operation of computing device 1070. Computing device 1070 may include a first earpiece 1074 and a second earpiece 1076 engaged by a headband assembly, these earpieces including speakers for presenting media content to a user. Processor 1072 may be configured to transmit a first audio channel and a second audio channel to the first earpiece 1074 and the second earpiece 1076. In some embodiments, a first orientation sensor 1078 may be configured to transmit orientation data of the first earpiece 1074 to processor 1072. Similarly, a second orientation sensor 1080 may be configured to transmit orientation data of the second earpiece 1076 to processor 1072. Processor 1072 may be configured to exchange the first audio channel with the second audio channel based on information received from the first orientation sensor 1078 and the second orientation sensor 1080. Data bus 1082 facilitates data transfer between at least battery / power supply 1084, wireless communication circuitry 1084, wired communication circuitry 1082, computer-readable storage 1080, and processor 1072. In some embodiments, processor 1072 may be configured to instruct battery / power supply 1084 based on information received by first orientation sensor 1078 and second orientation sensor 1080. Wireless communication circuitry 1086 and wired communication circuitry 1088 may be configured to provide media content to processor 1072. In some embodiments, processor 1072, wireless communication circuitry 1086, and wired communication circuitry 1088 may be configured to transmit and receive information from computer-readable storage 1090. Computer-readable storage 1090 may include a single disk or multiple disks (e.g., hard disk drive) and includes a storage management module that manages one or more partitions within computer-readable storage 1090.

[0187] Foldable headphones

[0188] Figures 11A to 11B A pair of headphones 1100 with a deformable shape factor is shown. Figure 11AAn earphone 1100 is shown, including a deformable headband assembly 1102 that can be configured to mechanically and electrically connect a handset 1104. In some embodiments, the handset 1104 may be an ear cup, and in other embodiments, the handset 1104 may be an on-ear handset. The deformable headband assembly 1102 can be engaged to the handset 1104 via foldable post regions 1106 of the headband assembly 1102. The foldable post regions 1106 are arranged at opposite ends of the deformable band region 1108. Each foldable post region 1106 may include an eccentric locking mechanism that allows each handset 1104 to remain flat after rotation against the deformable band region 1108. A flat state means that the curvature of the deformable band region 1108 changes to become flatter than in an arched state. In some embodiments, the deformable band region 1108 may become very flat, but in other embodiments, the curvature may be more variable (as shown in the figures below). The eccentric locking mechanism allows the earpiece 1104 to remain flat until the user rotates the eccentric locking mechanism backward away from the deformable band area 1108. In this way, the user does not need to search for a button to change the state, but simply performs the intuitive action of rotating the earpiece back to its arched position.

[0189] Figure 11B The diagram shows one of the earpieces 1104 rotated to contact the deformable band region 1108. As shown, rotation of only one earpiece 1104 against the deformable band region 1108 causes half of the deformable band region 1108 to flatten. Figure 11C The second part of the earpiece is shown rotating relative to the deformable band region 1108. This allows the earphone 1100 to easily rotate from an arched state (i.e., Figure 11A ) transforms into a flat state (i.e., Figure 11C In the flat-state headphones, the size of the headphones 1100 can be reduced to the size of two earpieces arranged end-to-end. In some embodiments, the deformable band area can be pressed into the padding of the earpieces 1104, thereby substantially preventing the headband assembly 1102 from being added to the height of the headphones 1100 in the flat state.

[0190] Figures 11D to 11F This illustrates how the earpiece 1104 of the earphone 1150 can be folded toward the outward-facing surface of the deformable band area 1108. Figure 11D The earphone 11D is shown in an arched configuration. Figure 11E In this configuration, one of the earpieces 1104 is folded towards the outward-facing surface of the deformable headband region 1108. Once the earpiece 1104 is in the appropriate position as shown, the force applied to move the earpiece 1104 to that position can flatten one side of the deformable headband assembly 1102 while keeping the other side arched. Figure 11FIn the middle, the second earpiece 1104 is also shown as folded against the outward-facing surface.

[0191] Figures 12A to 12B An embodiment of the headphones is shown, in which the headphones can be changed from an arched state to a flat state by pulling on opposite ends of the spring clamp. Figure 12A The earphone 1200 is shown in a flat state, which can be, for example, the earphone 1100 shown in FIG. 11. In the flat state, the earpieces 1104 are aligned in the same plane such that each earpad 1202 faces substantially the same direction. In some embodiments, the headband assembly 1102 contacts the opposite side of each earpad 1202 in the flat state. The deformable band area 1108 of the headband assembly 1102 includes a spring band 1204 and segments 1206. A locking member of the foldable post area 1106 applies tension to each end of the spring band 1204, thereby preventing the spring band 1204 from causing the earphone 1200 to return to an arched state. The segments 1206 can be connected to adjacent segments 1206 via pins 1208. The pins 1208 allow the segments to rotate relative to each other so that the shape of the segments 1206 can be maintained together, but can also be changed in shape to accommodate an arched state. Each of the segments 1206 may also be hollow to accommodate the spring clamp 1204 passing through each of the segments 1206. A center or key segment 1206 may include a fastener 1210 that engages the center of the spring clamp 1204. The fastener 1210 isolates the two sides of the spring clamp 1204, thereby allowing the handset 1104 to rotate sequentially to a flat position, such as... Figure 11B As shown.

[0192] Figure 12A Each of the foldable rod regions 1106 is also shown, comprising three rigid links joined together by pins that pivotally connect upper link 1212, middle link 1214, and lower link 1216. The movement of these links relative to each other is also at least partially controlled by a spring pin 1218, which may have a first end and a second end. The first end engages with a pin 1220 that engages the middle link 1214 to the lower link 1216, and the second end engages within a channel 1222 defined by the upper link 1212. The second end of the spring pin 1218 may also be connected to a spring clamp 1204 such that the force applied to the spring clamp 1204 changes as the second end of the spring pin 1218 slides within the channel 1222. Once the first end of the spring pin 1218 reaches the eccentric locking position, the earphone 1200 can be snapped into a flat state. The eccentric locking position keeps the earpiece 1104 in the flat position until the first end of the spring pin 1218 moves far enough to release it from the eccentric locking position. At that point, the earpiece 1104 returns to its arched position.

[0193] Figure 12BThe headphones 1200 are shown arranged in an arched state. In this state, the spring clamp 1204 is in a relaxed state with a minimum amount of force stored within it. Thus, the neutral state of the spring clamp 1204 can be used to define the shape of the headband assembly 1102, which is in an arched state when not being actively worn by the user. Figure 12B The diagram also shows the second end of the spring pin 1218 in a stationary state within the channel 1222, and how the corresponding reduction in force at this end of the spring clamp 1204 allows the spring clamp 1204 to help the earphone 1200 present an arched shape. It should be noted that although... Figures 12A to 12B The image shows essentially all of the spring clamp 1204, but the spring clamp 1204 is generally hidden by section 1206 and upper link 1212.

[0194] Figures 12C to 12D Side views of the foldable rod region 1106 in both arched and flat states are shown. Figure 12C The diagram illustrates how the force 1224 applied by the spring pin 1218 operates to hold the links 1212, 1214, and 1216 in an arched state. Specifically, the spring pin 1218 holds the links in an arched state by preventing the upper link 1212 from rotating about the pin 1226 and away from the lower link 1216. Figure 12D The diagram illustrates how the force 1228 applied by the spring pin 1218 operates to hold links 1212, 1214, and 1216 in a flat position. This bistable behavior is made possible by the spring pin 1218 being displaced in the flat position to the opposite side of the rotation axis defined by pin 1226. In this way, links 1212 to 1216 can operate as an over-center locking mechanism. In the flat position, the spring pin 1218 resists the transition of the headphones from a flat to an arched position; however, a sufficiently large rotational force applied by the user to the earpiece 1104 can overcome the force applied by the spring pin 1218 to transition the headphones between the flat and arched positions.

[0195] Figure 12E A side view of one end of the headphones 1200 in a flat state is shown. In this view, the ear pad 1202 is shown as having a contour configured to conform to the curvature of the user's head. The contour of the ear pad 1202 also helps prevent the headband assembly 1102, and in particular the segment 1206 constituting the headband assembly 1102, from protruding significantly beyond the vertical of the ear pad 1202. In some embodiments, the recess in the central portion of the ear pad 1202 may be at least partially caused by pressure applied thereon to the segment 1206.

[0196] Figures 13A to 13B A partial cross-sectional view of the headphones 1300, which transitions between an arched and a flat state using an off-axis cable, is shown. Figure 13AA partial cross-sectional view of the earphone 1300 in an arched configuration is shown. The earphone 1300 differs from the earphone 1200 in that, when the earpiece 1104 rotates toward the headband assembly 1102, the cable 1302 is tensioned to flatten the deformable band area 1108 of the headband assembly 1102. The cable 1302 may be made of a highly elastic cable material such as Nitinol. TM Made of nickel-titanium alloy. Close-up view 1303 shows how the deformable band region 1108 may include a number of sections 1304 fastened to spring band 1204 by fasteners 1306. In some embodiments, fasteners 1306 may also be secured to spring band 1204 by O-rings to prevent the fasteners 1306 from making a clicking sound when using the headphones 1300. The central section of section 1304 may include a sleeve 1308 to prevent the cable 1302 from slipping relative to the central section of section 1304. Other sections 1304 may include metal pulleys 1310 that prevent the cable 1302 from experiencing excessive friction when the cable 1302 is pulled to flatten the headphones 1300. Figure 13A It is also shown how each end of cable 1302 is secured to a rotating fastener 1312. The rotating fastener 1312 prevents the ends of cable 1302 from twisting when the foldable rod section 1106 is rotated.

[0197] Figure 13B A partial cross-sectional view of the earphone 1300 in a flat state is shown. The rotating fastener 1312 is shown in another rotated position to accommodate a change in the orientation of the cable 1302. This new position of the rotating fastener 1312 also creates an eccentric locking position that prevents the earphone 1300 from inadvertently returning to an arched state, as described above relative to the earphone 1200. Figure 13B The bending geometry of each segment 1304 is also shown to allow segments 1304 to rotate relative to each other in order to transition between arched and flat states. In some embodiments, cable 1302 may also be operable to resemble in some respects Figures 9A to 9B The implementation scheme limits the range of motion of the spring clamp 1204. The headphones 1300 also includes an input panel 1314 attached to the outward-facing surface of the headphones 1300 in a flat state. The input panel 1314 defines a touch-sensitive input surface, allowing a user to input operation commands into the headphones 1300 when the headphones 1300 is in a flat state. For example, a user might want to continue media playback when the headphones 1300 is in a flat state. Easy access to the input panel 1314 makes controlling the headphones 1300 simple and convenient in this state.

[0198] Figure 14AA headset 1400 similar to the headset 1300 is shown. Specifically, the headset 1400 also uses a cable 1302 to flatten the deformable band area 1108. Furthermore, the central portion of the cable 1302 is held by a central section 1304. In contrast, the lower link 1216 of the foldable post area 1106 is relative to... Figure 12A The lower connecting rod 1216 shown is displaced upwards. As the earpiece 1104 rotates about the axis 1402 toward the deformable band region 1108, the spring pin 1404 is configured to extend during the first portion of the rotation, as... Figure 14B As shown. In some embodiments, the extension of the spring pin 1404 allows the earpiece to rotate approximately 30 degrees from its initial position. Once the spring pin 1404 reaches its maximum length, further rotation of the earpiece 1104 about the axis 1402 causes the cable 1302 to be pulled, thereby changing the deformable clamp region 1108 from an arched geometry to a flat geometry, as shown. Figure 14C As shown. The delayed pulling action changes the initial angle of the pulled cable 1302. The changed initial angle makes it less likely that the cable 1302 will get tangled when the earphone 1400 changes from an arched state to a flat state.

[0199] Figures 15A to 15F Various views of the headband assembly 1500 from different angles and in different states are shown. The headband assembly 1500 has a bistable configuration that adapts to the transition between a flat state and an arched state. Figures 15A to 15C The headband assembly 1500 is shown in an arched configuration. Bistable lines 1502 and 1504 are illustrated within a flexible headband housing 1506. The headband housing can be configured to change shape to accommodate at least a flat and an arched configuration. Bistable lines 1502 and 1504 extend from one end of the headband housing 1506 to the other and are configured to apply a clamping force to the user's head via earpieces attached to opposite ends of the headband assembly 1500, thereby securing the associated pair of earpieces firmly in place during use. Figure 15C Specifically, this illustrates how the headband housing 1506 can be formed from a plurality of hollow connectors 1508 that can be hinged together and cooperate to form a cavity, within which a bistable line 1502 can transition between configurations corresponding to an arched state and a flat state. Because the connectors 1508 are hinged only on one side, they can only move in one direction to the arched state. This helps to avoid the unfortunate situation where the headband assembly 1500 bends in the wrong direction, thereby positioning the earpiece in the wrong orientation.

[0200] Figures 15D to 15FThe headband assembly in a flat state is shown. Because the ends of bistable lines 1502 and 1504 have exceeded the eccentric point higher than the center portion of the ends of bistable lines 1502 and 1504, bistable line 1502 helps to maintain the headband assembly 1500 in a flat state. In some embodiments, bistable line 1502 can also be used to carry signals and / or power from one earpiece to another through the headband assembly 1500.

[0201] Figures 16A to 16B The headband assembly 1600 is shown in both folded and arched states. Figure 16A The headband assembly 1600 is shown in an arched configuration. (Compared to...) Figure 15C and Figure 15F The headband assembly shown in the embodiment includes a plurality of hollow connectors 1602 that cooperatively form a flexible headband shell defining an internal volume. A passive coupling hinge 1604 may be positioned within the central portion of the internal volume and connects bistable elements 1606 together. Figure 16A The bistable elements 1606 and 1608 are shown in an arched configuration resisting forces acting to compress opposite sides of the headband assembly 1600. Once the opposite sides of the headband assembly 1600 are pushed together with a force sufficient to overcome the resistance generated by the bistable elements 1606 and 1608 in the directions indicated by arrows 1610 and 1612, the headband assembly 1600 can be... Figure 16A The arched state shown in the figure transforms into Figure 16B The folded state is shown. The passive connecting hinge 1604 adapts to the headphone assembly 1600 folding around the central area 1614 of the headband assembly 1600. Figure 16B The passive coupling hinge 1604 is shown bending to accommodate the folded state of the headband assembly 1600. Bistable elements 1606 and 1608 are shown configured in the folded configuration to bias opposite sides of the headband assembly 1600 toward each other, thereby resisting unintentional changes in state. Figure 16B The folding configuration shown has the beneficial effect of taking up substantially less space, specifically by allowing the open area defined by the headband assembly 1600 for adapting to the user's head to collapse, so that the headband assembly 1600 can take up less space when not in active use.

[0202] Figures 17A to 17B Various views of the foldable headphones 1700 are shown. Specifically, Figure 17A A top view of the headphones 1700 in a folded state is shown. The headband 1702, extending between the earpieces 1704 and 1706, includes a cable 1708 and a spring 1710. In the folded state shown, the cable 1708 and spring 1710 are straight and in a relaxed or neutral state. Figure 17BA side view of the earphone 1700 in an arched configuration is shown. The earphone 1700 can be rotated away from the headband 1702 by rotating the earpieces 1704 and 1706. Figure 17A The folded state shown transitions to Figure 17B The earpieces 1704 and 1706 each include an eccentric mechanism 1712 that applies tension to the end of the wire 1708 to keep the wire 1708 taut in order to maintain the arched shape of the headband 1702. The wire 1708 helps to maintain the shape of the headband 1702 by applying force at multiple locations along the spring 1710 via wire guides 1714, which are regularly spaced along the headband 1702.

[0203] Headgear structure

[0204] Figure 18A A perspective view of a headset 1800 worn by a user is shown. The headset includes an earpiece 1802 engaged via a headband 1804. In some embodiments, the earpiece 1802 may include a touch sensor 1806 covering at least a portion of the outer surface of the earpiece 1802. The earpiece 1802 may also or alternatively include other input controls, such as one or more knobs or buttons. In some embodiments, the touch sensor 1806 may be configured to allow the user to operate media settings and playback. For example, the touch sensor 1806 may be configured to receive and process multiple gestures corresponding to commands such as volume change, next / previous track, pause, stop, etc. The headband 1804 includes a lever region 1808 that couples the headband 1804 to the earpiece 1802. The lever region 1808 may include a telescopic member for adjusting the size of the headset 1800 based on the size of the user's head. In some embodiments, the lever region 1808 may be configured to accommodate a telescopic translation of approximately 30 mm to 40 mm. The headband frame 1812 may include multiple segments 1814 that collectively define a central opening configured to accommodate a conformal mesh assembly 1816 that is configured to distribute pressure evenly over the user's head.

[0205] The conformal mesh assembly 1816 can also be operatively formed as a ventilated headband for the headphones 1800, which in some embodiments helps to provide a secure yet well-ventilated headband for the headphones 1800. A central opening within the conformal mesh assembly 1816 can be defined by a segment 1814 of the headband frame 1812. As shown, the conformal mesh assembly 1816 can extend from the left side 1813 of the headband frame 1812 to the right side (not shown) of the headband frame 1812, and can also extend from back to front between opposing segments 1814 of the headband frame. In some embodiments, the headband segment 1814 may have a substantially circular cross-sectional shape and accommodate the arrangement of conductive paths configured to synchronize the operation of speakers, microphones, and other operating components included within each earpiece 1802. In other embodiments and as shown... Figure 18B As shown, these sections may have a generally rectangular geometry. The headband sections 1814 may also include spring members configured to maintain the shape of the headband frame 1820 and assist in keeping the headphones 1800 securely attached to the user's head by applying a force against the user's head that compresses the earpiece 1802. In some embodiments, a top cover element 1818 may optionally be stretched between the headband sections 1814. The top cover element 1818 may be decorative or structural in nature, depending on how robustly the sections 1814 of the headband frame 1812 are constructed. In some embodiments, the headband frame 1812 may take the form of a single, integral frame without any discrete sections.

[0206] Figure 18B A cross-sectional view of the headphone 1800 is shown according to section line FF. Specifically, Figure 18BThe diagram illustrates how portions of the mesh assembly 1816 can be bent and / or flexed to conform to the topology of a user's head. This allows the mesh assembly to comfortably adapt to and conform to the user's head without uncomfortably digging into it. The periphery of the mesh assembly 1816 includes a locking feature 1815 shown snapping into a first channel defined by the headband arm 1814. The periphery of the top cover element 1818 is shown snapping into a second channel defined by the headband arm 1814. While the top cover element 1818 is shown bent away from the mesh assembly 1816, it may also have a flat profile or curved surface within or towards the mesh assembly 1816. In some embodiments, the top cover element 1818 may also be formed of a mesh that allows air to pass through the headband 1804, thereby helping to prevent the user's head from overheating. In other embodiments, for aesthetic purposes, it may be desirable to form the top cover element 1818 from a solid material having a desired solid surface that does not accommodate air passage through the central opening 1820. Although not shown in this particular cross-sectional view, each of the headband arms 1814 may include a spring element that helps to apply a clamping force that securely holds the headphones 1800 in the proper position on the user's head.

[0207] Figure 18C A rear view of the headphones 1800 is shown. Although the view shows a headband arm 1814 with a 90-degree right-angle bend, it should be understood that some designs do not have this 90-degree right-angle bend geometry, but instead have a headband arm 1814 with a geometry that conforms to the curvature of the user's head (similar to the curvature of the lower surface 1822 of the mesh assembly 1816 conforming to the curvature of the user's head).

[0208] Figures 19A to 19E Perspective views of various embodiments of the components constituting the headband structure of the headphones shown in Figure 18 are shown. Figure 19AA perspective view of the conformal mesh assembly 1816 and a close-up view of a cross-sectional view showing a portion of the periphery of the conformal mesh assembly 1814 are shown. As shown, the periphery of the conformal mesh assembly 1814 includes a locking feature 1902 molded around the edge of the mesh material 1904. As shown, the locking feature 1902 may have a tapered geometry that facilitates insertion of the locking feature 1902 into the channel defined by the earpiece arm 1814. In some embodiments, the locking feature 1902 may extend along the entire periphery of the conformal mesh assembly 1814. The mesh material 1904 may be formed of nylon, PET, monoelastic or bielastic woven fabric or a polyether-polyurea copolymer having a thickness of about 0.6 mm. The locking feature 1902 may be formed of a durable and flexible thermoplastic material such as TR90 and, in some cases, extends through an opening in the mesh material 1818. In some embodiments, the locking feature 1902 may define an alignment feature in the form of a notch 1906, thereby facilitating proper alignment of the conformable mesh assembly 1814 with the central opening 1820 in which the mesh assembly 1816 is fitted. While the mesh assembly 1816 is shown as having a generally U-shaped cross-section with flat edges at its periphery, the mesh assembly 1816 may also include curved edges at its periphery configured to correspond with the more elliptical central opening 1820 or, in some embodiments, with a curved rectangular opening with rounded corners.

[0209] Figure 19B A close-up view of one side of the headband housing 1812 is shown, as well as the alignment of the locking feature 1902 of the conformal mesh assembly 1816 with the channel defined by the arm 1814 of the headband housing 1812 before pressure 1905 is applied to the locking feature 1902 of the conformal mesh assembly 1814 to engage the locking feature 1902 within the channel. In some embodiments, the mesh assembly 1816 may be installed before the top cover element 1818 is assembled with the headband housing 1812. Figure 19C A channel 1906 defined by a headband arm 1816 and a central opening 1820 defined by the arm 1816 are shown. The channel 1906 may have an internal T-shaped geometry configured to receive and hold a locking feature 1902 of the conformal mesh assembly 1816. Figure 19D A conformable mesh assembly 1816 is shown, positioned within a central opening 1908 and having a locking feature 1902 engaged within a channel 1906.

[0210] Figure 19EThe mesh material 1904, which forms most of the mesh assembly 1816, is shown to have a substantially uniform consistency / mesh pattern. The mesh material 1904 may be flexible to prevent excessive force from being applied to the user's head. Figure 19F An alternative embodiment is shown, wherein the conformal mesh assembly 1806 includes a first mesh material 1908 extending across a central portion of the conformal mesh assembly 1816 and a second mesh material 1910 extending across a peripheral portion of the conformal mesh assembly 1816. The first mesh material 1908 may be formed of a more flexible / compliant material than the second mesh material 1910, thereby allowing the central portion of the conformal mesh assembly 1816 to deform significantly more than the peripheral portion. This also allows the peripheral portion of the conformal mesh assembly to be stronger and less likely to tear or break.

[0211] Figure 19G The diagram illustrates how the conformal mesh assembly 1818 can include three different types of mesh 1912, 1914, and 1916, allowing the conformal portion to gradually become stiffer towards the periphery. In some embodiments, the stiffness of the conformal mesh assembly 1816 can even change more rapidly across its entire area. Specifically, the mesh can include mesh with gradually varying mesh sizes, such that the central portion of the conformal mesh assembly 1816 can have a significantly lower elasticity ratio than the periphery of the conformal mesh assembly 1816. Thus, the portion of the mesh material likely to experience the largest amount of displacement can have the lowest elasticity ratio, thereby significantly increasing comfort by reducing the likelihood of force concentration at specific points or areas on the user's head. In some embodiments, the arrangement of reinforcing members can be used in conjunction with the mesh material 1818 to alter the magnitude of the forces transmitted to the user by the mesh material constituting the conformal mesh assembly 1816. In some embodiments, gaps can be left in the central region of the mesh material 1818 to reduce forces in the central region of the mesh material 1818.

[0212] Telescopic pole assembly

[0213] Figure 20A A side of the headband housing 1812 and a telescopic member 1810 extending from that end of the headband housing 1812 are shown. The headband housing 1812 includes a Y-shaped housing member 2002 that engages a lower housing member 2004 to a headband arm 1816. In some embodiments, the lower housing member 2004 may be fastened to the Y-shaped housing member 2002, and the headband arm 1816 may be integrally formed with the Y-shaped housing member 2002. The lower housing member 2004 may be configured to accommodate the telescopic movement of the telescopic member 1810. The lower housing member 2004 defines a plurality of channels 2006 that facilitate the guidance of spring contacts 2008 associated with the telescopic member 1810 as it slides in and out of the lower housing member 1810. Figure 20AA portion of the synchronization cable 2010, visible through channel 2006 and coiled within the lower housing component, is also shown. The coiled configuration of the synchronization cable 2010 allows it to adapt to length changes caused by the sliding extension and retraction of the telescopic member 1810.

[0214] Figure 20B It shows Figure 20A An exploded view of the side of the headband housing 1812 shown. Specifically, the lower housing component 2004 is separate from the Y-shaped housing component 2002 and the telescopic member 1810. The lower housing component 2004 is shown defining a plurality of channels 2006, and an annular bushing 2012 is disposed within one end of the lower housing component 2004 and configured to control the movement of the telescopic member 1810 relative to the lower housing component 2004 by generating friction during movement of the telescopic member 1810. Figure 20B Also shown is a spring member 2014 as a single workpiece, which includes a plurality of spring contacts 2008 configured as engagement channels 2006.

[0215] Figure 20C A cross-sectional view of the first end of the lower housing component 2004 according to section line GG is shown. The lower housing component 2004 is shown engaging with the telescopic member 1810, and the bushing 2012 is positioned within the telescopic member 1810. One of the spring contacts 2008 is shown engaging within a channel 2006 of the lower housing component 2004. In some embodiments, the channel 2006 does not extend completely through the wall of the lower housing component 2004, such as... Figure 20C As shown in the diagram. This allows the spring contact 2008 to engage within the channel 2006 and remain outwardly invisible from the exterior of the lower housing component 2004.

[0216] Figure 20D A cross-sectional view of the second end of the lower housing component 2004 is shown according to the section lines. The second end of the lower housing component 2004 is shown engaging with the Y-shaped housing component 2002. The synchronization cable 2010 is shown extending through the opening defined by both the Y-shaped housing component 2002 and the lower housing component 2004.

[0217] Figure 20E A perspective view of a bushing 2012 is shown, which defines a plurality of contact channels 2016 radially spaced around an inwardly facing surface of the bushing 2012. The contact channels 1016 can be configured to align a spring contact 2008 with a channel 2006 of a lower housing component 2004.

[0218] Figure 21AA perspective view of one end of the spring member 2014 and the telescopic member 1810 is shown. As shown, the spring member 2014 includes a single spring contact 2008. Each spring contact 2008 includes a locking feature 2102 configured to prevent the spring member 2014 from disengaging from the telescopic member 1810. The telescopic member 1810 defines a set of corresponding openings 2104 and 2106 separated by the bridging member 2108. When the spring contact 2008 engages within the opening 2104, the length of the opening 2104 allows each spring contact 2008 to deflect through the opening 2104 so that the telescopic member 1810 can be inserted into the lower housing member 2004.

[0219] Figure 21B A spring contact 2008 engaged within opening 2104 is shown, and Figure 21C A spring contact 2008 engaged within opening 2106 is shown. When locking feature 2102 is engaged within opening 2106, spring member 2014 cannot be removed and remains engaged within channel 2006. Furthermore, bridging member 2108 prevents spring contact 2008 from deflecting any further into the internal volume 2110 defined by telescopic member 1810. This keeps the protruding portion of spring contact 2008 firmly engaged within the corresponding channel 2006. In some embodiments, once spring contact 2008 is engaged within channel 2006, spring member 2014 can be removed by pulling telescopic member 1810 back. Figure 21B The position is offset as shown. In this way, the spring contact 2008 can be offset from the opening 2104 into the opening 2106.

[0220] Figures 21D to 21G Various locking mechanisms are shown positioned at an opening defined by the lower housing component 2004, through which a telescopic member 1810 extends. Figures 21D to 21E Locking mechanism 2112 is shown. Figure 21D When the locking mechanism 2112 rotates in the first direction 2114, the telescopic member 1810 can be translated into or out of the lower housing component 2004, as indicated by the double-headed arrow 2116. Figure 21E This illustrates how rotating the locking mechanism 2112 in direction 2118 fixes the position of the telescopic member 1810 relative to the lower housing component 2004. Figures 21F to 21G Locking mechanism 2120 is shown. Figure 21F The diagram illustrates how the telescopic member 1810 can translate into or out of the lower housing component 2004 when the locking mechanism 2120 is pulled away from the lower housing component 2004 in direction 2122 and toward the telescopic member 1810, as shown by the double-headed arrow 2124. Figure 21GThis illustrates how the telescopic member 1810 is fixed relative to the lower housing member 2004 when the locking mechanism 2120 is subsequently pushed toward the lower housing member 2004 in direction 2126.

[0221] Buckling resistance components

[0222] Figures 22A to 22E Various extension and retraction coil configurations of a portion of the synchronization cable 2010 disposed within the lower housing component 2004 are shown. Figure 22A A partial cross-sectional view of a portion of a synchronization cable 2010 employing a conventional helical coil configuration is shown. Unfortunately, as shown, during the transition from the extended configuration 2204 to the contracted configuration 2206, this configuration can be prone to lateral misalignment of individual loops 2202. Misalignment can cause friction between the synchronization cable 2010 and the interior of the housing component 2004, leading to wear over time due to undesirable friction-induced failures caused by fatigue of the synchronization cable 2010.

[0223] Figure 22B The diagram illustrates how the cross-sectional shape of the sync cable 2010 can be adjusted to include alignment features that help prevent misalignment of the loops 2212 of the sync coil 2010. Specifically, opposite sides of the loops 2212 may include alignment features with complementary geometries that facilitate self-alignment of the loops 2212 of the sync coil 2010 during contraction, as shown in the figure.

[0224] Figure 22C The diagram illustrates how the cross-sectional shape of the sync cable 2010 can be adjusted to include alignment features that help prevent misalignment of the loops 2222 of the sync coil 2010. Specifically, opposite sides of the loops 2222 may include alignment features in the form of concave channels 2224 and convex ridges 2226, which facilitate self-alignment of the loops 2212 of the sync coil 2010 during contraction, as shown in the figure.

[0225] Figure 22D The diagram illustrates how the cross-sectional shape of the synchronization cable 2010 can be adjusted to include connecting features that help prevent misalignment of the loops 2232 of the synchronization coil 2010. Specifically, opposite sides of the loops 2232 may include connecting features in the form of complementary hooks 2234 and convex ridges 2226, which facilitate self-alignment of the loops 2212 of the synchronization coil 2010 during contraction, as shown. The connecting features also help limit the maximum longitudinal extension of the synchronization cable 2010.

[0226] Figure 22EAnother configuration is shown to prevent misalignment of the synchronization cable 2010. Misalignment is prevented even if the synchronization cable 2010 is arranged as a helical coil by winding the synchronization cable 2010 around the shaft 2342. The shaft 2342 should be formed of a rigid material that is unlikely to undergo significant bending while allowing for slight variations in curvature to accommodate the movement of the telescopic member 1810. In some embodiments, the shaft 2242 may be formed of NITINOL (a nickel-titanium alloy) wire.

[0227] Figure 23A An exploded view of the components associated with the data plug 2302 is shown. Specifically, the data plug 2302, extending from one end of the rod base 2304, is configured to engage a socket within the telescopic member 1810. Once engaged within the socket, the data plug 2302 can be securely held in place using a threaded fastener 2306 configured to engage a recess 2308 defined by the base portion of the data plug 2302 through a threaded opening 2310. A sealing ring 2312 can also be used to further secure the data plug 2302 within the telescopic member 1810. Figure 23B A telescopic member 1810 is shown fully assembled with a threaded fastener 2306, which fully engages within the threaded opening 2310 to keep the data plug 2302 firmly positioned.

[0228] Figure 23C It shows that according to Figure 23B Section line II is a sectional view of the expansion joint 1810. Specifically, Figure 23C One end of the data plug 2302 engaged within the plug socket 2314 is shown. Figure 23C The diagram also illustrates how threaded fasteners engage with recess 2308 to hold data plug 2302 in place. The position of sealing ring 2312 relative to data plug 2302 is also shown. It should be noted that in some embodiments, data plug 2302 may be omitted, replaced by a cable terminating in a board-to-board connector that engages a printed circuit board within the associated earpiece of the earpiece.

[0229] Figure 23D A perspective view of a portion of the data plug 2302 is shown. Specifically, the body of the data plug 2302 has a stepped geometry and defines a plurality of adhesive channels 2316 spaced at regular intervals. In some embodiments, the adhesive channels 2316 may be laser-cut into the outer surface of the body of the data plug 2302. Figure 23E A cross-sectional side view of this portion of the data plug 2302 is shown, and a plurality of adhesive channels 2316 are shown positioned on opposite sides of the body of the data plug 2302.

[0230] Figure 23F A data plug 2302 is shown glued to a stem base 2304, which is then positioned within a recess 2318 defined by a handset 2320. Figure 23G A cross-sectional view is shown of a data plug 2302 disposed within a recess defined by a stem base 2304, which in turn is positioned within a recess 2318 of a handset 2320. Figure 23G Corresponding to, for example Figure 23F The cross-section JJ shown also illustrates the manner in which the data plug 2302 is adhered to the stem base 2304 by the adhesive layer 2322. Because the adhesive layer 2322 engages the adhesive channels 2316, the strength of the bond formed between the adhesive layer 2322 and the body of the data plug 2302 is significantly increased. In some embodiments, the inward-facing surface of the stem base 2304 may also include adhesive channels similar to the adhesive channels 2316 to achieve even greater adhesion. In some embodiments, one or both surfaces contacting the adhesive layer 2322 may be roughened, thereby increasing the surface energy of these surfaces and improving the strength of the resulting adhesive bond. Figure 23G A data synchronization cable 2324 is also shown, which extends through a channel defined by both the data plug 2302 and the pole base 2304.

[0231] Ear pad configuration and optimization

[0232] Figure 24A A perspective view of the earpiece 2402 and earpad 2404 is shown. The earpad 2404 is shown as having a planar shape, illustrating how the side of the user's head 2406 is not flat at all. One reason most earpads are very thick is to accommodate the skull contours of the side of the user's head. Figure 24A The dashed arrows shown illustrate the distance differences that the ear pads need to overcome to conform to the contours of the skull.

[0233] Figure 24B The diagram illustrates how the earpieces 2412 and 2414 of the earphone 2410 can have a thin earpad 2416 without sacrificing user comfort. The earpad 2416 may include a flexible substrate that allows a predetermined amount of deflection to accommodate variations in the skull's contour. The earpad 2416 may be coupled to an earpiece yoke 2418 having two posts 2420 positioned corresponding to a typical low point on the user's head. In the illustrated configuration, the portion of the earpad 2416 that encounters the protruding skull contour can be bent backward to prevent pressure points on the user's head. This results in significant weight and material cost savings due to the ability to utilize a thinner pad without compromising user comfort.

[0234] Figure 24CThe diagram illustrates how post 2420 connects flexible substrate 2422 to earpiece yoke 2418. Flexible substrate 2422 is formed from a substrate with sufficient flexibility to allow earpad 2416 mounted to it to deform. It should be noted that... Figure 24C Many components have been removed from the earpiece 2414 to clearly show how the flexible substrate 2422 is connected to the earpiece yoke 2418. Figure 24D The earpiece 2414 and the rotating shaft 2424 are shown, with the ear pad 2416 configured to bend about the rotating shaft to conform to the skull contour of the user's head. The rotating shaft 2424 is defined by the position of the post 2420 attached to the rearward-facing surface of the flexible substrate 2422 and thus to the ear pad 2416.

[0235] Figures 24E to 24G Another earpiece with a configuration designed to take into account the skull contours of the user's head is shown. Figure 24E A side view of the earpiece 2430 is shown. The earpiece 2430 includes a convex input panel 2432, an earpiece housing 2434, and an earpad assembly 2436. The convex input panel 2432 is attachable to one side of the earpiece housing 2434 and includes a sensor for receiving touch input from an earphone associated with the earpiece. Figure 24E Also shown is a compressible ear pad 2438 of the ear pad assembly 2436. The compressible ear pad 2438 may be formed of foam and has a substantially uniform thickness. By bending the compressible ear pad 2438 into a curved geometry as shown, the user-facing surface of the ear pad assembly 2436 can be shaped to match the skull contour of the user's head.

[0236] Figure 24F A cross-sectional view of the earpiece 2430 and the shape of the cavity 2440 for accommodating the ear 2442 are shown. In the case of an earphone design not configured to accommodate placement of the earpiece 2430 over either ear, the speaker assembly 2444 can protrude into the cavity 2440 without affecting the amount of space available to the ear 2442. In some embodiments, pushing the speaker assembly 2444 forward in this manner reduces the overall size of the earpiece 2430. Figure 24FThe undercut geometry of earpad 2438 is also shown to allow earpiece 2430 to seal around a portion of the user's head closer to the ear 2442, thereby reducing the length of the circumference of the portion of earpad assembly 2436 that contacts the user's head. In some embodiments, this improves passive noise isolation. Earpad 2438 may be covered by textile material 2446 to provide comfort to the portion of earpad assembly 2436 that contacts the user. In some embodiments, various treatments may be applied to textile material 2446 to improve the acoustic isolation provided by textile material 2446. For example, a heat treatment may be applied to at least the portion of textile material 2446 most likely to contact the user's head to reduce the pore size of textile material 2446, thereby enhancing acoustic resistance.

[0237] Figure 24G A perspective view of the earpiece 2430 is shown, and the varying curvature of the earpad assembly 2436 around its periphery is shown more clearly. Specifically, region 2448 of the earpad assembly 2436 is configured to contact a portion of the user's head below and behind the ear, where the head begins to tilt backward toward the neck. For this reason, region 2448 protrudes significantly further outward from the earpiece 2430 compared to any other portion of the earpad assembly 2436. To a slightly lesser extent, region 2450 of the earpad assembly 2436 also protrudes further away from the earpiece 2430 to accommodate another low point on the user's head that is typically located in front of and slightly above the user's ear.

[0238] Figures 25A to 25C Various views of another ear pad configuration 2500 formed by multiple material layers are shown. Figure 25A An exploded view of an earpad configuration 2500 is shown, which comprises three distinct component layers: a pad 2502, a conformal structural layer 2504, and a textile layer 2506. In some embodiments, the pad 2502 may be formed from foam and shaped during a machining process, which will be described in more detail below. The conformal structural layer 2504 may help define the shape of the periphery of the pad 2502 while imparting a certain amount of conformability to the exterior of the earpiece. In some embodiments, the conformal structural layer 2504 may be formed from an ethylene-vinyl acetate rubber blend. The textile layer 2506 may be formed from a sheet of fabric and includes several distinct regions 2508 and 2510. Regions 2510 that constitute the majority of the fabric in direct contact with the user's head may be heat-treated to seal any gaps in the fabric to improve passive acoustic isolation. This can be particularly important for headphones with active noise cancellation systems, as improved passive acoustic isolation reduces the amount of noise that needs to be eliminated by the active noise cancellation system. In some implementations, region 2510 may be heat-treated to reduce its porosity to substantially less than that of region 2508. Textile materials with lower porosity generally provide more effective passive noise attenuation.

[0239] Figure 25B The illustration shows how a foam pad 2502, together with a compliant structural layer 2504 and a textile layer 2506, can be formed around an electronic housing component 2512 that defines an internal volume 2514 configured to accommodate various electrical components that support playback of media files received by headphones associated with the earpad configuration 2500. Figure 25B The importance of aligning the textile layer 2506 with the opening defined by the electronic device housing component 2512 is also shown, since the opening 2516 of the textile layer 2506 is configured to align with the opening 2518 of the electronic device housing component 2512 to accommodate I / O ports or input controls. Additionally, the opening 2520 may also need to be aligned with the post 2522 of the housing component 2512.

[0240] Figure 25C A cross-sectional side view of the ear pad configuration 2500 is shown. Specifically, Figure 25C This illustrates how the textile layer 2506 includes two regions 2508 positioned on different sides of the heat-treated region 2510, and how the compliant structural layer 2504 extends below the regions 2510 of the textile layer 2506.

[0241] Figure 25D This illustrates how the heat-treated region 2510 of the textile layer 2506 directly contacts the side of the user's head when the headphones are in active use. Thus, the heat-treated region 2510 forms an effective barrier preventing audio waves from passing between the user's head and the ear pad configuration 2500, which is generally considered impractical for headphones using textile materials to cover the ear pads. While region 2510 is shown extending fully across the surface in contact with the user's face, it should be understood that in some embodiments, only the portion of the textile fabric in contact with the user undergoes heat treatment.

[0242] Figures 26A to 26BA perspective view of earpad 2602, which can be formed from a conformable material such as open-cell foam, is shown. Conventional foam pads for headphones are formed from rectangular blocks and, if formed entirely using machining methods, would be formed by a stamping process. By machining earpad 2602 using larger blocks, a precise three-dimensional shape can be achieved. Machining is also superior to performing injection molding because, although these types of processes may include molds to achieve the desired shape, surface consistency is often substantially different due to the heating process that occurs during the molding process. For at least these reasons, machined foam performs substantially better as an earpad liner than its alternatives, due to its ability to allow for customized responsiveness to pressure and to reduce the overall weight of each earpad liner by allowing unnecessary portions of the foam to be easily cut off. As shown, earpad 2602 has a gradually sloping geometry on both sides (as... Figures 26A to 26B As shown), this gives the ear pad 2602 an undercut geometry, which helps to establish the desired firmness of the ear pad 2602.

[0243] Figures 26C to 26G Various manufacturing operations are shown for forming ear pads from a single piece of foam. Figure 26C The image shows an open-cell foam block 2604 formed by an extrusion or molding process. Figure 26D The image shows a forming tool 2606 and a ball end mill 2608, which utilize foam block 2604 to form opposite sides of ear pad 2602. In some embodiments, the cutting and milling process can be performed more precisely by first immersing foam block 2610 in water (e.g., Figure 26E (as shown), then freeze the foam block (as shown) Figure 26F (As shown). In some embodiments, the machining operation can be slightly more precise when the forming tool 2606 and ball end mill 2608 are applied to the frozen foam block 2610, because the foam material is less likely to move and deform under the amount of pressure applied by the machining tools.

[0244] Figures 26C to 26G Various manufacturing operations are shown for forming ear pads from a single piece of foam. Figure 26C The image shows an open-cell foam block 2604 formed by an extrusion or molding process. Figure 26D The image shows a forming tool 2606 and a ball end mill 2608, which utilize foam block 2604 to form opposite sides of ear pad 2602. In some embodiments, the cutting and milling process can be performed more precisely by first immersing foam block 2610 in water (e.g., Figure 26E (as shown), then freeze the foam block (as shown) Figure 26F(As shown). In some embodiments, the machining operation can be slightly more precise when the forming tool 2606 and ball end mill 2608 are applied to the frozen foam block 2610, because the foam material is less likely to move and deform under the amount of pressure applied by the machining tools. Although the annular ear pad is shown as having a substantially rectangular cross-sectional geometry, CNC processes allow for a much wider variety of shapes. For example, teardrop, circular, square, elliptical, polygonal, and other cross-sectional geometries can be achieved by varying the machining operations performed by the forming tool 2606 and ball end mill 2608. Non-Euclidean surface shapes, such as spline geometries, can also be fully achieved using the aforementioned machining techniques.

[0245] Speaker components

[0246] Figure 27A A cross-sectional side view of an exemplary acoustic configuration within a handset 2700 is shown, which can be applied to any handset previously described. This acoustic configuration includes a speaker assembly 2702 comprising a diaphragm 2704 and a conductive coil 2706 configured to receive a current for generating a moving magnetic field that interacts with magnetic fields emitted by permanent magnets 2708 and 2710, causing the diaphragm 2704 to oscillate and generate an audio wave that exits the handset assembly through a perforated wall 2709. In some embodiments, the perforated wall 2709 may include an array of capacitive sensors, such as… Figures 9A to 9B As shown in the diagram. A hole can be drilled through the central region of the permanent magnet 2708 to define an opening 2712, which allows the rear air volume behind the diaphragm 2704 to fluidly communicate with the internal volume 2714 through the mesh layer 2716, thereby increasing the effective size of the rear volume of the speaker assembly 2702. The internal volume 2714 extends all the way to the vent 2718. The vent 2718 can be configured to further increase the effective size of the rear volume of the speaker assembly 2702. The rear volume of the speaker assembly 2702 can be further defined by the speaker frame member 2720 and the input panel 2722. In some embodiments, the input panel 2722 may be separated from the speaker frame member 2720 by about 1 mm. The speaker frame member 2720 defines an opening 2724 that allows audio waves to travel beneath an adhesive channel 2726 defined by a protrusion 2728 of the speaker frame member 2720.

[0247] Figure 27BThe exterior of the earpiece 2700 is shown, with the input panel 2722 removed to reveal the shape and dimensions of the internal volume associated with the speaker assembly 2702. As shown, the central portion of the earpiece 2700 includes permanent magnets 2708 and 2710. The speaker frame member 2720 includes a recessed area defining an internal volume 2714. The internal volume 2714 may have a width of approximately 20 mm and a height of approximately 1 mm, such as... Figure 27A As shown in the diagram, the end of the internal volume 2714 has an opening 2724 defined by the speaker frame member 2720, which is configured to allow the rear volume to continue below the adhesive channel 2726 and extend to the vent 2718 leading out from the earpiece 2700.

[0248] Figure 27C A cross-sectional view of a microphone mounted within the earpiece 2700 is shown. In some embodiments, the microphone 2730 is secured across an opening 3732 defined by a speaker frame member 2720. The opening 3732 is offset from the microphone air intake vent 2734, thereby preventing the user from seeing the opening 2732 from outside the earpiece 2700. In addition to providing an aesthetic improvement, this offset opening configuration also tends to reduce the incidence of microphone 2730 picking up noise from the air passing rapidly through the microphone air intake vent 2734.

[0249] Figure 28 A handset 2700 with an input panel 2720 is shown, which forms the outward-facing surface of the handset 2700. A touch-sensitive area can be established by a touch sensor 2802, which can take the form of a flexible substrate attached to the inward-facing surface of the input panel 2720. The flexible substrate can define a plurality of notches 2804, which act as strain-relief features, thereby allowing the flexible substrate to conform to the concave shape of the inward-facing surface of the input panel 2720. A passive radiator 2806 is shown adjacent to the touch sensor 2802 and also attached to the inward-facing surface of the radio-transmittance input panel 2720. The passive radiator 2806 can be formed from a stamped metal sheet or along a flexible printed circuit. This configuration prevents interference between the passive radiator 2806 and the touch sensor 2802. The passive radiator 2806 can cooperate with an internal antenna 2808 (also located within the handset 2700) to improve wireless performance.

[0250] Distributed battery configuration

[0251] Figures 29A to 29B A perspective view and a sectional view of the earpiece 2900 are shown, illustrating the location of the distributed battery assemblies 2902 and 2904 within the earpiece 2900. Specifically, Figure 29A This illustrates how battery assemblies 2902 and 2904 can be positioned on opposite sides of the housing of earpiece 2900. Figure 29B A cross-sectional view of the earpiece 2900 according to section line KK is shown. Battery assemblies 2902 and 2904 can also be tilted diagonally relative to the ear canal defined by the earpiece 2900 (e.g., Figure 29B (as shown in the figure) to maximize the size of the ear canal 2906 defined by the earpiece 2900.

[0252] Figure 29C This illustrates how more than two discrete battery assemblies can be integrated into a single earpiece housing. For example, three, four, five, or six discrete battery assemblies can be distributed along the periphery of the earpiece 2900, as shown below. Figure 29C As shown. In some implementations, and as... Figure 29C As shown, battery assemblies 2908–2914 have curvatures that conform to the curvature of the outer periphery of the earpiece housing and, more generally, have available space within the earpiece housing. Each discrete battery assembly may have its own input and output terminals configured to support the operation of various components within the earpiece 2900.

[0253] Figure 30A Earphone 3000 is shown, comprising earpieces 3002 and 3004 joined together by a headband 3006. The central portion of the headband 3006 has been omitted to focus on components within earpieces 3002 and 3004. Specifically, earpieces 3002 and 3004 may include a combination of a Hall effect sensor and a permanent magnet. As shown, earpiece 3002 includes a permanent magnet 3008 and a Hall effect sensor 3010. The permanent magnet 3008 generates a magnetic field extending away from the south pole of earpiece 3002. Earpiece 3004 includes a Hall effect sensor 3012 and a permanent magnet 3014. In the illustrated configuration, the permanent magnet 3008 is positioned to output a sufficiently strong magnetic field to saturate the Hall effect sensor 3012. Sensor readings from the Hall effect sensor 3012 are sufficient to indicate to earphone 3000 that it is not being actively used and can enter a power-saving mode. In some embodiments, this configuration may also indicate to the earphones 3000 that they are positioned in the case and should enter a low-power operating mode to conserve battery power. Rotating the earpieces 3002 and 3004 by 180 degrees will cause the magnetic field emitted by the permanent magnet 3014 to saturate the Hall effect sensor 3010, thus also allowing the device to enter a low-power mode. In some embodiments, it may be desirable to use one or both accelerometer sensors within the earpieces 3002 to confirm that the earpieces 3002 and 3004 are facing the ground before entering a low-power state, as the user may expect the earpieces 3002 and 3004 to be positioned upwards to operate the earphones detached from the head-mounted configuration, and in this case, audio playback should continue.

[0254] Figure 30BAn exemplary loading / storage case 3016 is shown, ideally suited for use with over-ear and ear-hook headphone designs. Case 3016 includes a recess 3018 to accommodate a headband assembly and two earpieces. The recess 3018 portion accommodating the earpieces may include protrusions 3020 and 3022 that fill the recess, the recess being sized to fit the user's ear. Figure 30C The earphone 3000 is shown positioned within the recess 3018, and Figure 30D It shows that according to Figure 30C The sectional view of the earpiece 3002 with section line LL. Figure 30D The diagram illustrates how the protrusion 3020 includes capacitive elements 3024 arranged in a predefined pattern along the upward-facing surface of the protrusion 3020. Therefore, when the earphone 3000 is placed inside the case 3016 and the capacitance sensor 3026 senses the capacitive elements employing the predefined pattern, the earphone 3000 can be configured to power off or enter a low-power mode to conserve power.

[0255] Figure 30E A housing 3016 in which headphones 3000 are positioned is shown. Headphones 3000 are shown including an ambient light sensor 3028. In some embodiments, input from the ambient light sensor 3028 can be used to determine when the housing 3016 is closed while the headphones are positioned within it. Similarly, a processor within headphones 3000 can determine that the housing 3016 is open when a sensor reading from the ambient light sensor 3028 indicates an amount of light consistent with the opening of the housing 3016. In some embodiments, sensor data from the ambient light sensor 3028 may be sufficient to determine when the housing 3016 is opened or closed when other onboard sensors of headphones 3000 indicate that headphones 3000 are positioned within a recess defined by the housing 3016. Examples of other sensors include those described below. Figures 30B to 30D The capacitive sensor discussed in the text. Other examples of sensors may take the form of Hall effect sensors 3030 disposed within earpieces 3002 and 3004, which can be configured to detect the magnetic field emitted by a permanent magnet 3032 disposed within the housing 3016. This second set of sensor data can significantly reduce the incidence of sensor data from ambient light sensor 3028 being erroneously associated with housing opening and closing events. Sensor readings from other types of sensors, such as strain gauges, time-of-flight sensors, and other earphone-type sensors, can also be used to determine the operating state. Furthermore, these sensors can be activated at different frequencies depending on the determined operating state of the earphone 3000. For example, when the housing 3016 is determined to be closed around the earphone 3000, sensor readings can only be acquired at a sparse frequency, while during active use, these sensors can operate more frequently.

[0256] Illuminated button components

[0257] Figures 31A to 31B An illuminated button assembly 3100 suitable for use with the headphones is shown. Figure 31A The illustration shows how an illuminated button assembly 3100 includes a button 3102 and an illuminated window 3104, which can be configured to identify the operating state of the headphones. The button 3102 is electrically connected to other components within the headphones via a flexible circuit 3106. At least a portion of the button assembly 3100 can be secured to the device housing by a mounting bracket 3108. Figure 31B A rear view of the illuminated button assembly 3100 is shown, as well as how the mounting bracket 3108 can be configured to receive fasteners 3110 to secure the illuminated button assembly to the device housing.

[0258] Figures 31C to 31D A side view of the illuminated button assembly 3100 in its non-actuated and actuated positions, respectively, is shown within the device housing 3111. Figure 31C The diagram illustrates how the illuminated window 3104 of button 3102 can have a tapering shape that guides light emitted by any of a plurality of illumination elements 3114. The illuminated window 3104 may also include retaining features 3112 that project laterally from the illuminated window 3104 to prevent it from disengaging from button 3102. Illumination elements 3114 may be positioned near the rear-facing surface of the illuminated window 3104. Each illumination element 3104 may be in the form of a light-emitting diode (LED) surface-mounted to flexible circuitry 3106. In some embodiments, each illumination element 3114 may be configured to emit a different color of light, thereby allowing changes in the light received by the illuminated window 3104 to reflect the state or operational status of the device associated with the illuminated button assembly 3100. In some embodiments, illumination elements 3114 may include red, yellow, and blue. Selective lighting of two or more different colors at different intensity levels allows for the generation of a wide variety of colors, thereby informing the user of the illuminated button component of many different operating conditions.

[0259] Figure 31DThis illustrates how the actuation of button 3102 under the action of force 3115 causes a portion of button 3102 to slide into the internal volume defined by housing 3111. Since the illumination element 3114 is directly attached to the rear surface of button 3102, the amount of light projected through illumination window 3104 remains constant regardless of the amount of movement caused by button 3104. This differs from conventional buttons, where the illumination element is positioned on a printed circuit board including an electrical switch. Therefore, in a conventional configuration, the amount of illumination increases during button actuation because the button moves closer to the illumination element during actuation. It should be noted that in... Figures 31C to 31D In the design shown, the electric switch 3116 is attached to the bracket 3118 to hold the electric switch 3116 in a fixed position. Thus, when the rearward-facing surface of the button 3104 contacts the electric switch 3116, the bracket 3118 provides sufficient resistance to register the actuation. The electric switch 3116 may be in the form of a dome switch, which also helps to provide tactile feedback to the user of the illuminated button assembly 3100.

[0260] Figure 31E A perspective view of an illuminated window 3104 is shown. The illuminated window 3104 includes a retaining feature 3112 projecting from the tapering body of the illuminated window 3104. It should be understood that the laterally projecting retaining feature 3112 can take many forms. The retaining feature 3112 must at least engage with a laterally oriented notch to prevent the illuminated window 3104 from shifting from the button 3102. In some embodiments, the illuminated window 3104 may be embedded in an opening defined by the button 3102. In this type of embedding molding operation, the opening defined by the button 3102 determines the shape and size of the illuminated window 3104.

[0261] Removable earpiece

[0262] Figures 32A to 32B A perspective view of a pivot assembly associated with a removable earpiece that engages with the stem base of the headphone band is shown. Specifically, the pivot assembly 3202 is configured to accommodate rotation of the associated earpiece relative to the headphone band about rotation axes 3204 and 3206. Figure 32A A rod base 3208 is shown engaged and locked in place within the pivot assembly 3202. The distal end 3210 of the rod base 3208 is locked in place by a latch plate 3212. Specifically, the latch plate 3212 includes a wall defining a hole 3214 that engages the neck of the rod base 3208 to prevent accidental removal of the rod base 3208 from the pivot assembly 3202. Figure 32AA portion of the earpiece housing 3216 is also shown, providing an opening for a switching mechanism 3218. The switching mechanism 3218 is configured to allow the stem base 3208 to be released from the pivot assembly 3202. The switching mechanism 3218 includes a protruding engagement member 3220 configured to contact a force translation member 3222. In some embodiments, the switching mechanism 3218 may be concealed beneath a removable earpad assembly.

[0263] Figure 32B The diagram illustrates how a force 3224 applied to the switching mechanism 3218 is applied by the engaging member 3220 to the translating member 3222. The inclined end of the engaging member 3220 transmits the force 3224 to the first post 3226 of the translating member 3222, causing the translating member 3222 to rotate about a rotation axis 3228. The rotation axis 3228 is defined by a fastener 3227 that pivotally connects one end of the translating member 3222 to a portion (not shown) of the handset housing 3216. The rotation of the translating member 3222 about the rotation axis 3228 causes the second post 3230 to apply a force 3232 to the wall of the latch plate 3212. The force 3232 applied to the latch plate 3212 causes it to shift laterally, thereby aligning the hole 3214 with the distal end 3210 of the rod base 3208. Once the hole 3214 is aligned with the distal end 3210 of the rod base 3208, a force 3234 can be applied to the rod base 3208, thereby allowing the rod base 3208 to be removed from the pivot assembly 3202.

[0264] Figures 33A to 33C Different views of the latching mechanism 3300 of the pivot assembly are shown. Figure 33A The diagram illustrates how the pivot assembly includes a latch body 3302 that defines a channel along which a latch plate 3304 is configured to slide. The latch body 3302 has a circular geometry, allowing it to rotate with the stud base 3306 and its associated stud plug 3308. The stud plug 3308 includes a contact area 3310. The contact area 3310 may include multiple electrical contacts for mating with circuitry and electrical components disposed within the same earpiece as the latch mechanism 3300. In some embodiments, the contact area 3310 includes multiple distinct electrical contacts; for example, two, three, or four distinct electrical contacts are possible contact configurations. In some embodiments, both sides of the stud plug 3308 may include contact areas comprising multiple electrical contacts for mating with circuitry and electrical components of the earpiece. It should be noted that the latching mechanism 3300 is generally positioned inside the earpiece housing such that the hole 3312 is aligned with the rod opening defined by the earpiece housing, thereby allowing the rod base 3306 to be inserted into the hole 3312 of the earpiece housing and the latching mechanism 3300.

[0265] Figure 33AThe latch plate 3304 is also shown to define the asymmetric hole 3312. In Figure 33A In the latching mechanism 3300, the latch plate 3304 is in the latched position, in which a smaller portion of the bore 3312 engages with a narrow neck, thereby separating the rod plug 3308 from the remainder of the rod base 3306. By engaging the narrow neck with the smaller portion of the bore 3312, the latch plate 3304 prevents the rod base 3306 from being removed from the latching mechanism 3300. The latching mechanism also includes a latch lever 3314 configured to rotate about a rotation axis 3317. A torsion spring 3316 is coupled to the latch lever 3314 and counteracts rotation of the latch lever 3314. A first arm 3318 engages a portion of the earpiece housing (not shown), and a second arm 3320 engages a portion of the latch lever 3314. When force 3322 is applied to the latch lever 3314, the latch lever 3314 rotates counterclockwise and applies a force to the latch plate 3304, sufficient to cause the latch plate 3304 to slide laterally within the latch body 3302. When force 3322 is released, the retaining spring 3324 is configured to apply a force to the post 3326 of the latch plate 3304 to return the latch plate 3304 to its original position. Figure 33A The location is shown in the figure. It should be noted that although the post plug 3308 is shown as exposed, this is for descriptive purposes only, and in some embodiments, the plug socket configured to mate with the post plug 3308 may be attached to the latching mechanism 3300 by one or more fasteners 3327.

[0266] Figures 33B to 33C A bottom view of the latch mechanism 3300 in the locked and unlocked positions is shown. A dashed outline is provided to illustrate the dimensions and shape of an exemplary pivoting mechanism suitable for carrying the latch mechanism 3300. Figure 33B A switching mechanism 3328 is shown, which is slidable along a channel or groove defined by an associated earpiece housing. The switching mechanism may take the form of a horizontal slider switch, which allows engagement and rotation of the latch lever 3314. Figure 33C The diagram illustrates how rotation of the latch lever 3314 causes lateral displacement of the latch plate 3304, aligning a larger portion of the hole 3312 with the lever plug 3308, thereby allowing the lever plug 3308 to be removed from the latch mechanism 3300. Figure 33C It is also shown how the holding spring 3324 can deform to accommodate the lateral movement of the latch plate 3304 when the switching mechanism 3328 is actuated. When pressure is released from the switching mechanism 3328, the holding spring 3324 and the torsion spring 3316 work together to bias the switching mechanism 3328 back as shown. Figure 33BThe starting position is shown in the diagram. In some embodiments, it may be desirable to position the switching mechanism within a channel in the earpiece housing, such that the switching mechanism is concealed by a removable earpad assembly. For example, in some embodiments, the earpad assembly may be attached to the earpiece housing by a magnet or a series of snap-fit ​​elements.

[0267] Telescopic rod mechanism

[0268] Figure 34A A headset 3400 is shown, comprising earpieces 3402 and 3404 mechanically connected together by a headband assembly 3406. The headband assembly includes a signal cable 3408 that electrically connects electrical components within the earpieces 3402 and 3404. Portions near opposite ends of the signal cable 3408 are arranged as coils 3410, configured to expand and contract to accommodate increases and decreases in size of the headband assembly 3406. In some embodiments, including specific mechanisms may be helpful in preventing the coils 3410 from tangling after multiple headband assembly extension / retraction operations.

[0269] Figure 34BA close-up view of the pole post region 3412 of the headband assembly 3406 is shown. In some embodiments, the pole post region 3412 comprises multiple different housing components. As shown, the pole post region 3412 includes an upper housing component 3414, a lower housing component 3416, a telescopic component 3418, and a portion of a pole post base 3420. In some embodiments, the telescopic component 3418 and the pole post base 3420 may be welded together or otherwise permanently coupled together to form a hollow pole post that defines a passage for a coiled portion of the cable 3408 to pass through. The telescopic component 3418 is shown fully retracted within the internal volume defined by the lower housing component 3416. In this position, the coils 3410 of the signal cable 3408 are compressed together to accommodate the shortened length of the pole post region 3412. The distal end of the telescopic member 3418 includes a funnel element 3422, which is configured to facilitate guiding the signal cable 3408 back to the coil 3410 as shown. Directly behind the funnel element 3422 is a first stabilizing element 3424. The outer diameter of the first stabilizing element is approximately equal to the inner diameter of the lower housing member 3416. This facilitates a slightly interference fit between the first stabilizing element 3424 and the lower housing member 3416, thereby helping to keep the distal end of the telescopic member 3418 centered within the internal volume defined by the lower housing member 3416. Directly behind the first stabilizing element 3424 is a first bearing element 3426, which has a slightly smaller diameter than the first stabilizing element 3424 but is formed of a harder and less elastic material than the first stabilizing element 3424. Thus, the first bearing element 3426 can be fitted with a hard stop that prevents the telescopic member from coming too close to the interior of the inward-facing surface of the wall constituting the lower housing member 3416.

[0270] Figure 34B It is also shown how the distal end of the lower housing component 3416 includes a second bearing element 3428 and a second stabilizing element 3430. The second stabilizing element has a smaller inner diameter than the second bearing element 3428, thereby allowing the second stabilizing element 3430 to help bias the telescopic member 3418 toward the central portion of the lower housing component 3416, while the second bearing element 3428 forms a hard stop that prevents the remainder of the telescopic member 3418 from direct contact with other portions of the lower housing component 3416. In this way, both the distal and proximal ends of the telescopic member 3418 are constrained. When the telescopic member 3418 extends outward from the lower housing component, these constraints help establish a desired amount of friction between the two components and prevent any engagement or scuffing that could lead to undesirable operation or even damage to the headband assembly 3406. It should also be noted that... Figure 34BAlso shown is a pole plug 3308 positioned at the distal end of the pole base 3420. The pole plug 3308 may include two or more electrical contacts for mating / electrically connecting to the circuitry and electrical components of the handset 3402 or 3404.

[0271] Figure 34C A close-up view of the distal end of the telescopic member 3418 is shown. Specifically, the funnel element 3422 is shown as having a tapering protrusion extending through the end of the telescopic member 3418. The tapering geometry of the protrusion helps to align adjacent coils 3410 as they pass through the funnel element 3422 into the telescopic member 3418. As shown, some adjacent coils are misaligned. This misalignment can be corrected at least partially by the tapering geometry of the funnel element 3422. A first stabilizing element 3424 is shown immediately following the funnel element 3422. The first stabilizing element 3424 may include a series of axially aligned ribs that abut against and generate a small amount of friction with the inward-facing surfaces of the lower housing member 3416. In some embodiments, a layer of lubricant may be applied within the lower housing member 3416 to reduce the amount of resistance generated by friction between these components. It should be noted that the number, thickness, and spacing between the axially aligned ribs can be adjusted to achieve the desired amount of friction between these components. Both the first stabilizing element 3424 and the funnel element 3422 include radial stabilizing elements 3432 and 3434, which protrude radially from the telescopic member 3418 to engage an axially aligned channel defined by the inward-facing surface of the lower housing member 3416. By engaging this channel, the radial stabilizing elements 3432 and 3434 prevent undesirable rotation of the telescopic member 3418 relative to the lower housing member 3416.

[0272] Figure 34C A first bearing element 3426 is also shown, which may further include a radial stabilizing element 3436. In some embodiments, the radial stabilizing element 3436 may also include a spring that helps to stabilize the telescopic member 3418 within the lower housing member 3416. It should be noted that the first bearing element has an outer diameter slightly smaller than that of the first stabilizing element 3424 and slightly larger than the outer diameter of the remainder of the telescopic member 3418, thus allowing it to take the form of a hollow tube made of aluminum, stainless steel, or other robust and lightweight materials.

[0273] Figure 34D It is shown that, according to, Figure 34BThe figure shows a cross-sectional view of the distal end of the telescopic member 3418 along section line MM. Specifically, the lower housing member 3416 is shown defining a plurality of axially aligned channels configured to accommodate radial stabilizing elements 3432. As shown, the telescopic member also includes ridges that support a portion of the radial stabilizing elements 3432 and provide robust support for these radial stabilizing elements. Figure 34D It is also shown how the ridge of the first stabilizing element 3424 defines a plurality of channels that reduce the total surface area contact between the first stabilizing element 3424 and the inward-facing surface of the lower housing component 3416.

[0274] Figure 34E It is shown that, according to, Figure 34B The diagram shows a cross-sectional view of the distal end of the lower housing component 3416 along section line NN. Specifically, the lower housing component 3416 is shown with a diameter at its distal end that is wider than the remainder of its length. This wider diameter end of the lower housing component 3416 allows the second stabilizing element 3430 to have a greater amount of compliant material positioned between the telescopic member 3418 and the lower housing component 3416. This greater amount of material advantageously provides greater compliance when needed. By rapidly reducing the cross-sectional area of ​​the lower housing component 3416, the large diameter of the second stabilizing element 3430 is prevented from being pushed too far into the lower housing component during use or assembly. Furthermore, the amount of friction between the second stabilizing element 3430 and the telescopic member 3418 can be reduced or adjusted by the number and size of the channels 3440 formed by ridges arranged along the inner diameter of the stabilizing element 3430.

[0275] Figures 34F to 34H Several alternative embodiments are shown that allow for a larger or smaller clearance between the lower housing component 3416 and the telescopic component 3418. Figure 34F In this configuration, a wedge-shaped radial stabilizing element can be used to compensate for clearance in all degrees of freedom. A small gap can be established between the radial stabilizing element 3442 and the telescopic member 3418. This small gap can be used to generate additional clearance in a single direction to increase the additional clearance required to accommodate any differences in curvature between the lower housing member 3416 and the telescopic member 3418. In this configuration, the radial position of the radial stabilizing element 3442 and its support channel corresponds to the curvature direction of the lower housing member 3416 and the telescopic member 3418. Figure 34G The configuration shown accommodates a certain amount of rotation of the telescopic member 3418 relative to the lower housing member 3416, and also accommodates movement along the X-axis. Figure 34H The configuration shown illustrates how the telescopic member 3418 can be constrained in the radial and X-axis directions, thereby allowing the telescopic member 3418 to move only along the Y-axis.

[0276] Figures 34I to 34JA telescopic member 3418 is shown disposed within an internal volume defined by a lower housing member 3416. Figure 34I In the lower housing component, a plurality of compliant members 3444 are arranged at regular intervals along the inner surface of the lower housing component 3416. The compliant members 3444 can take many forms, including compliant spring members, which allow displacement without excessively increasing friction during the movement of the telescopic member 3418. Figure 34J In this embodiment, the telescopic member 3418 is shown as compressing the stabilizing element 3446 until it stops upon contacting the bearing element 3448, which may be constructed of a material substantially more rigid than the stabilizing element 3446. In some embodiments, the stabilizing element 3446 may be formed of a material such as FKM (fluorinated elastomer), while the bearing element 3448 may be formed of a material such as PEEK (polyether ether ketone).

[0277] While each of the improvements described above has been discussed in isolation, it should be understood that any of these improvements can be combined. For example, a synchronized telescopic earpiece can be combined with a low elasticity ratio hoop implementation. Similarly, an off-center pivot earpiece design can be combined with a deformable shape factor headphone design. In some implementations, each type of improvement can be combined together to produce headphones that have the advantages derived from the combined types of improvements.

[0278] Various aspects, embodiments, specific implementations, or features of the described implementation scheme may be used individually or in any combination. Various aspects of the implementation scheme may be implemented by software, hardware, or a combination of hardware and software. The implementation scheme may also be implemented as computer-readable code on a computer-readable medium for controlling production operations, or as computer-readable code on a computer-readable medium for controlling a production line. A computer-readable medium is any data storage device that can store data that can later be read by a computer system. Examples of computer-readable media include read-only memory, random access memory, CD-ROM, HDD, DVD, magnetic tape, and optical data storage devices. Computer-readable media may also be distributed across a network-coupled computer system, such that the computer-readable code is stored and executed in a distributed manner.

[0279] For illustrative purposes, the foregoing description uses specific names to provide a thorough understanding of the described embodiments. However, it will be apparent to those skilled in the art that specific details are not required to practice the described embodiments. Therefore, the foregoing description of specific embodiments is presented for illustrative and descriptive purposes. The foregoing description is not intended to be exhaustive or to limit the described embodiments to the precise forms disclosed. It will be apparent to those skilled in the art that many modifications and variations are possible in light of the teachings above.

[0280] The following paragraphs list numbered embodiments that describe the implementations disclosed herein.

[0281] 1. A handset comprising: a housing defining a cavity for adapting to a user's ear; an active noise cancellation system; an annular earpad coupled to the housing; and a textile layer wound around the annular earpad, the textile layer including a first region and a second region, the first region having a lower porosity than the second region of the textile layer.

[0282] 2. The earpiece according to Embodiment 1, wherein the textile layer is formed of a single material layer, and the porosity of the first region is reduced by applying a heat treatment to the first region.

[0283] 3. The earpiece according to Embodiment 1, wherein the annular ear pad has an undercut geometry.

[0284] 4. The earpiece according to Embodiment 1, wherein the annular ear pad has an asymmetrical geometry that conforms to the skull contour of the user's head.

[0285] 5. The earpiece according to Embodiment 1, wherein the active noise cancellation system includes a microphone disposed within the earpiece, and wherein the housing defines an audio inlet opening for the microphone, the audio inlet opening being laterally offset from the microphone.

[0286] 6. The earpiece according to embodiment 5, wherein the housing includes an aluminum housing component defining the audio inlet opening.

[0287] 7. The earpiece according to Embodiment 1, wherein the cavity has an undercut geometry defined cooperatively by the annular ear pad and the outer shell.

[0288] 8. A portable listening device comprising: an earpiece housing defining a cavity for adapting to a user's ear; a headband assembly coupled to the earpiece housing; an active noise cancellation system; an earpad assembly coupled to the earpiece housing; and a textile layer wound around the earpad assembly, the textile layer including a first region and a second region, the first region having a lower porosity than the second region of the textile layer.

[0289] 9. The portable listening device according to embodiment 8, wherein the first region has an annular geometry positioned above a portion of the textile layer positioned along the periphery of the ear pad assembly to improve the passive noise attenuation characteristics of the ear pad.

[0290] 10. The portable listening device according to embodiment 8, wherein the ear pad assembly includes an annular ear pad formed by performing a cutting machining operation on an open-cell foam block.

[0291] 11. The portable listening device according to embodiment 10, wherein the annular ear pad has a non-rectangular cross-sectional geometry.

[0292] 12. The portable listening device according to embodiment 10, wherein the ear pad assembly includes a compliant structural member for attaching the annular ear pad to the earpiece housing.

[0293] 13. A portable listening device, comprising: a first earpiece; a second earpiece; a headband assembly connecting the first earpiece to the second earpiece; a magnetic field sensor assembly disposed within the first earpiece and configured to measure an amount of rotation of the first earpiece relative to the headband assembly; and a processor configured to change an operating state of the portable listening device based on the amount of rotation measured by the magnetic field sensor assembly.

[0294] 14. The portable hearing device according to embodiment 13, wherein at least a portion of the magnetic field sensor assembly is coupled to a portion of the rod of the headband assembly and disposed within the first earpiece.

[0295] 15. The portable listening device according to embodiment 13, wherein the processor is configured to change the operating state when the measured amount of rotation exceeds a predetermined threshold.

[0296] 16. The portable listening device according to embodiment 14, wherein the magnetic field sensor assembly comprises: a first permanent magnet and a second permanent magnet, the first permanent magnet and the second permanent magnet being coupled to the portion of the rod; and a magnetic field sensor, the magnetic field sensor being coupled to the housing of the first earpiece.

[0297] 17. The portable listening device according to embodiment 14, wherein the magnetic field sensor assembly comprises: a magnetic field sensor connected to the portion of the rod; and a first permanent magnet and a second permanent magnet connected to the housing of the first earpiece.

[0298] 18. The portable listening device according to embodiment 16, wherein the polarity of the first magnetic field emitted by the first permanent magnet is oriented in a first direction, and the polarity of the second magnetic field emitted by the second permanent magnet is oriented in a second direction opposite to the first direction.

[0299] 19. The portable listening device according to embodiment 13, wherein the processor is configured to control the operating state based on the amount of rotation measured by the magnetic field sensor assembly, the magnetic field sensor assembly being configured to identify three or more different positions of the headband assembly relative to the first earpiece.

[0300] 20. The portable listening device according to embodiment 15, wherein the earphones enter a low-power state when the amount of rotation detected by the magnetic field sensor assembly is lower than the predetermined threshold.

[0301] 21. The portable hearing device according to embodiment 13 further includes an optical sensor assembly disposed within the first earpiece and configured to direct light waves to the user's ear, wherein the processor is configured to confirm changes in operating state based on output from the optical sensor assembly.

[0302] 22. The portable listening device according to embodiment 13, wherein the portable listening device includes headphones.

[0303] 23. A loading case comprising: a case housing defining a first earpiece recess and a second earpiece recess, the first earpiece recess and the second earpiece recess being configured to receive a first earpiece and a second earpiece of a corresponding earphone; and a permanent magnet positioned near a portion of the first earpiece recess corresponding to the first earpiece of the corresponding earphone, the permanent magnet being positioned to emit a magnetic field that interacts with a sensor within the first earpiece of the earphone.

[0304] 24. The loading box according to embodiment 23, wherein the magnetic field emitted by the permanent magnet includes one or more characteristics that can be detected by the sensor in the first earpiece.

[0305] 25. The loading case according to embodiment 23, wherein the first earpiece recess and the second earpiece recess are configured to receive corresponding first and second ear cups of the corresponding earphones.

[0306] 26. A system comprising: a loading case, the loading case including: a case housing defining a first ear cup recess and a second ear cup recess, the first ear cup recess and the second ear cup recess being configured to receive a first ear cup and a second ear cup of corresponding earphones, the loading case including a permanent magnet positioned near the periphery of the first ear cup recess; and earphones including: a first earpiece and a second earpiece; a headband assembly connecting the first earpiece and the second earpiece together; a magnetic field sensor positioned along the periphery of the first earpiece; and a processor configured to change the operating state of the earphones in response to detecting a magnetic field emitted by the permanent magnet.

[0307] 27. The system according to embodiment 26, wherein the earphone further includes an ambient light sensor, wherein the processor is configured to change the operating state of the earphone to a low-power state in response to detecting the magnetic field and receiving a low-light reading from the ambient light sensor.

[0308] 28. An earpiece comprising: an earpiece housing including a rear wall and a side wall, the rear wall and the side wall cooperatively defining an internal volume; a speaker assembly disposed within the internal volume, the speaker assembly including: a permanent magnet defining a channel extending therethrough; a diaphragm; a conductive coil coupled to the diaphragm and configured to generate a first magnetic field, the first magnetic field interacting with a second magnetic field emitted by the permanent magnet to cause oscillation of the diaphragm; and a speaker frame member extending across a portion of the rear wall of the earpiece housing to further define a rear air volume extending through the channel.

[0309] 29. The earpiece according to embodiment 28, wherein the speaker frame member defines the rear volume such that it extends to a peripheral portion of the earpiece housing, the peripheral portion defining a vent.

[0310] 30. The earpiece according to embodiment 28, wherein the portion of the rear wall is the majority of the rear wall.

[0311] 31. The earpiece according to embodiment 28, wherein the average distance between the speaker frame member and the rear wall of the earpiece housing is about 1 mm.

[0312] 32. The earpiece according to embodiment 28, wherein a portion of the speaker frame member is glued to the rear wall of the earpiece housing, and wherein the rear volume is arranged around the portion of the speaker frame member glued to the rear wall.

[0313] 33. The earpiece according to embodiment 28, wherein the permanent magnet is a first permanent magnet, and the earpiece further includes a second permanent magnet surrounding the first permanent magnet and cooperatively forming a channel, the channel being shaped to accommodate the conductive coil.

[0314] 34. A portable listening device comprising: a headband assembly; an earpiece housing defining an internal volume, the earpiece housing being coupled to the headband assembly; a speaker assembly disposed within the internal volume, the speaker assembly comprising: a diaphragm; a permanent magnet defining a channel extending therethrough, the channel connecting a rear air volume disposed directly behind the diaphragm to another air volume extending radially outward from the diaphragm; and a conductive coil coupled to the diaphragm and configured to generate a first magnetic field, the first magnetic field interacting with a second magnetic field emitted by the permanent magnet to cause oscillation of the diaphragm.

[0315] 35. The portable listening device according to embodiment 34, wherein the additional air volume extends across most of the rear wall of the earpiece housing.

[0316] 36. The portable listening device according to embodiment 34 further includes a speaker frame member defining the other air volume extending radially outward from the diaphragm.

[0317] 37. A handset comprising: a housing defining a cavity configured to fit a user's ear; a speaker disposed within the housing; a first battery disposed within the housing; and a second battery disposed within the housing, the cavity being positioned between the first battery and the second battery.

[0318] 38. The earpiece according to embodiment 37, wherein the first battery and the second battery are diagonally inclined away from the cavity.

[0319] 39. The earpiece according to embodiment 37 further includes a third battery and a fourth battery disposed within the housing.

[0320] 40. The earpiece according to embodiment 39, wherein the first battery, the second battery, the third battery and the fourth battery are each discrete battery assembly.

[0321] 41. The system according to embodiment 26, wherein the loading box further includes a second permanent magnet positioned near the periphery of the second ear cup recess.

Claims

1. Headphones, including: First receiver; Second earpiece; as well as A headband assembly extending between the first earpiece and the second earpiece, the headband assembly comprising: A headband frame having first and second opposing sections extending between a first frame end and a second frame end defining a central opening, the frame including a central frame region located between the first frame end and the second frame end and raised relative to the first frame end and the second frame end; A signal cable electrically coupled to the first and second handsets and extending through an internal volume defined by the headband frame; and A mesh extending across the central opening between the first and second opposite sections and having a curved profile with a U-shaped cross-section between the first and second frame ends, such that the central region of the mesh rises above and below the first and second frame ends. The first earpiece is coupled to the headband frame via a first pivoting mechanism, and the second earpiece is coupled to the headband frame via a second pivoting mechanism. The first pivoting mechanism is operable to allow the first earpiece to rotate independently of the headband frame along a roll axis and a yaw axis, and the second pivoting mechanism is operable to allow the second earpiece to rotate independently of the headband frame along a roll axis and a yaw axis.

2. The earphone of claim 1, wherein the mesh extends between opposite segments of the central frame region and also extends between the first frame end and the second frame end.

3. The earphone according to claim 1, wherein the headband frame is connected to each of the first earpiece and the second earpiece via a post region, the post region forming a Y-shaped geometry at each corresponding earpiece between the post and the headband frame.

4. The headphones of claim 1, wherein the mesh comprises a mesh material and a locking feature extending around the periphery of the mesh material, the locking feature engaging within a channel defined by the headband frame.

5. The earphone of claim 4, wherein the locking feature defines an alignment feature to prevent misalignment between the mesh and the central opening.

6. The headphones of claim 1, wherein each of the first pivoting mechanism and the second pivoting mechanism comprises an actuator and a first compression spring, the actuator having a housing defining an aperture sized and shaped to receive the first frame end of the headband, the first compression spring being positioned to compress relative to the aperture while resisting rotation of the pivoting mechanism about the roll axis.

7. The earphone of claim 6, wherein each of the first pivoting mechanism and the second pivoting mechanism further comprises a second compression spring, the second compression spring being positioned to compress relative to the hole while resisting rotation of the pivoting mechanism about the roll axis.

8. The earphone according to claim 1, wherein the density of the area between the central region and the peripheral region is higher than that of the central region and lower than that of the peripheral region.

9. The earphone according to any one of claims 1 to 8, wherein at least one of the first earpiece and the second earpiece includes a touch sensor covering at least a portion of the outer surface of the earpiece.

10. A portable listening device, comprising: First receiver; Second earpiece; as well as A headband having a left end and a right end extending between a first earpiece and a second earpiece, the headband having first and second opposite sections extending between the left end and the right end defining a central opening and having a channel positioned peripherally around the central opening; A mesh assembly having a U-shaped cross-section between the first and second opposite sections, the mesh assembly comprising: A flexible mesh material, the flexible mesh material covering the central opening, and A locking feature extends around the periphery of the flexible mesh material and engages within the channel, causing the mesh to have a curved profile with a U-shaped cross-section, such that the central region of the mesh is raised above the left and right ends of the headband and below the central opening of the headband; The first earpiece is coupled to the headband frame via a first pivoting mechanism, and the second earpiece is coupled to the headband frame via a second pivoting mechanism. The first pivoting mechanism is operable to allow the first earpiece to rotate independently of the headband frame along the roll axis and the yaw axis, and the second pivoting mechanism is operable to allow the second earpiece to rotate independently of the headband frame along the roll axis and the yaw axis.

11. The portable listening device of claim 10, wherein the headband includes a frame defining the central opening.

12. The portable listening device of claim 11, wherein the frame comprises first and second opposite sections arranged generally parallel to each other.

13. The portable listening device of claim 10, wherein each of the first and second opposite sections of the frame has a circular cross-sectional geometry.

14. The portable listening device of claim 10, wherein the locking feature has a tapered geometry that facilitates insertion of the locking feature into the channel.

15. The portable listening device of claim 10, wherein each of the first pivoting mechanism and the second pivoting mechanism comprises an actuator and a first compression spring, the actuator having a housing defining an aperture sized and shaped to receive a first end of the headband, the first compression spring being positioned to compress relative to the aperture while resisting rotation of the pivoting mechanism about the roll axis.

16. The portable listening device of claim 15, wherein each of the first pivoting mechanism and the second pivoting mechanism further comprises a second compression spring, the second compression spring being positioned to compress relative to the orifice while resisting rotation of the pivoting mechanism about the roll axis.

17. The portable listening device according to any one of claims 10 to 16, wherein at least one of the first earpiece and the second earpiece includes a touch sensor covering at least a portion of the outer surface of the earpiece.

18. The portable hearing device according to any one of claims 10 to 16, wherein each of the first earpiece and the second earpiece is removably coupled to the headband.

19. Headphones, including: First receiver; Second earpiece; as well as A headband that couples the first earpiece to the second earpiece, the headband comprising: A frame, the frame defining a central opening and having a first frame end, a second frame end, and a central frame region located between the first frame end and the second frame end; and A mesh, coupled to the frame and forming a U-shaped cross-section, such that the central region of the mesh is raised above the ends of the first and second frames and below the central frame region; The first earpiece is coupled to the headband via a first pivoting mechanism, and the second earpiece is coupled to the headband via a second pivoting mechanism. The first pivoting mechanism is operable to allow the first earpiece to rotate independently of the headband along a roll axis and a yaw axis, and the second pivoting mechanism is operable to allow the second earpiece to rotate independently of the headband along a roll axis and a yaw axis. Each of the first and second pivoting mechanisms includes an actuator and a first compression spring. The actuator has a housing defining an aperture sized and shaped to receive the first frame end of the headband. The first compression spring is positioned to compress relative to the aperture while resisting rotation of the pivoting mechanism about the roll axis. Each of the first pivoting mechanism and the second pivoting mechanism further includes a second compression spring, the second compression spring being positioned to compress relative to the bore while resisting rotation of the pivoting mechanism about the roll axis.

20. The earphone of claim 19, wherein the mesh comprises a mesh material and a locking feature extending around the periphery of the mesh material, the locking feature engaging within a channel defined by the frame.

Images