Electronic device

Abstract

The invention relates to an electronic device. A head-mountable device may include a display, an arm, a bistable hinge connecting the arm to the display, the bistable hinge and the arm including an open position, a folded position, and a deployed position. A first electronic component may be positionally secured between the display and the bistable hinge, a second electronic component may be positioned distal to the bistable hinge, and a cable may connect the first electronic component and the second electronic component, the cable being directed through the bistable hinge.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 585,555, filed on September 26, 2023, and entitled “ELECTRONIC DEVICE,” the entire disclosure of which is hereby incorporated by reference herein. Technical Field

[0003] The embodiments generally relate to electronic devices and more particularly to head-mounted electronic devices. Background Art

[0004] Recent advances in portable computing have enabled head-mounted devices that provide users with augmented reality and virtual reality experiences. The various components of these devices, such as display windows, viewing frames, fixed arms, speakers, batteries, and other components, work together to provide an immersive and comfortable experience. However, the anatomical structure of each user's head is unique. One user's head may be larger than another user's, or a head may be a different shape. Other anatomical features, including the relative positions of a user's nose, forehead, and ears, can also vary greatly between users. Anatomical variations in the head pose challenges to head-mounted devices designed for comfort and reliability.

[0005] In some head-mountable devices, for example, securement arms that extend along or contact opposite sides of a user's head may be used to secure the device to the user's head. However, the size, angle, shape, and other physical characteristics of the arms that may be sufficient to comfortably and securely secure the device to one user's head may not be sufficient to comfortably and securely secure the device to another user's head.

[0006] Additionally, head-mountable devices may include electronics that should be protected from external environmental factors. Therefore, what is needed in the art are head-mountable devices and systems that can improve adaptability, flexibility, and / or user comfort in addition to increased reliability and component protection. Summary of the invention

[0007] In at least one example of the present disclosure, a head-mounted electronic device may include a frame, a display window, an arm, a bistable hinge connecting the arm to the frame, the bistable hinge and the arm including an open position, a folded position, and a splay position. A first electronic component may be fixed in position between the display window and the bistable hinge, a second electronic component may be positioned distally from the bistable hinge, and a cable may connect the first electronic component and the second electronic component via the bistable hinge.

[0008] In one example, the bistable hinge comprises a 4-bar linkage. In one example, the bistable hinge comprises a plurality of pivot points. In one example, the bistable hinge comprises a cover that conceals components of the bistable hinge during rotation of the arm from the open position to the folded position. In one example, the first electronic component comprises a projector. In one example, the arm defines a lateral protrusion, and the projector is disposed within the lateral protrusion. In one example, the second electronic component comprises at least one of a battery or a printed circuit board.

[0009] In at least one example of the present disclosure, a hinge assembly for electronic glasses may include: a distal end capable of connecting to an arm; a proximal end capable of connecting to a frame; a first pivot point positioned inside the hinge assembly between the distal end and the proximal end, the first pivot point having a first rotation direction; and a second pivot point positioned outside the hinge assembly, the second pivot point having a second rotation direction opposite to the first rotation direction.

[0010] In one example, the first rotational direction corresponds to a folding direction. In one example, the second rotational direction corresponds to an unfolding direction. In one example, the second pivot point is a virtual pivot point formed at an outer gap opening defined by the outer surfaces of the frame and the arm. In one example, the outer gap opening maintains a constant size during rotation of the hinge assembly in the second rotational direction.

[0011] In at least one example of the present disclosure, a wearable device may include a housing, an observation window fixed to the housing, a foldable arm connected to the housing, and a joint connecting the foldable arm and the housing. The joint may include: a spring axially positioned with the foldable arm; a connecting rod including a first end and a second end, the first end connected to the spring; a rotating rod including a third end and a fourth end, the third end including a pivot point for the rotating rod, and the fourth end connected to the second end; and a follower, the follower contacting the rotating rod.

[0012] In one example, the wearable device may further include a cable guided through the joint. In one example, the cable is guided through the connecting rod. In one example, the foldable arm is capable of moving between 80 degrees and 100 degrees in a first direction and is capable of moving between 5 degrees and 15 degrees in a second direction opposite to the first direction. In one example, during a folding cycle of the foldable arm, the spring is compressed during a first part of the folding cycle and the spring is decompressed during a second part of the folding cycle. In one example, the first end of the connecting rod includes a hook capable of being attached to the spring. In one example, an interior portion of at least one of the housing or the foldable arm is exposed prior to connecting the first end of the connecting rod to the spring. In one example, the follower is capable of translating between the third end and the fourth end along the surface of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present disclosure will be readily understood through the following detailed description in conjunction with the accompanying drawings, in which like reference numerals represent like structural elements, and in which:

[0014] Figure 1 shows a top view of an example of a head-mountable device worn by a user;

[0015] Figure 2A shows a top view of an example of a head-mountable device worn by a user;

[0016] Figure 2B shows a top view of an example of a head-mountable device worn by a user;

[0017] Figure 3 A side view of an example of a head mountable device is shown;

[0018] Figure 4A An example of a head mountable device in a first state is shown;

[0019] Figure 4B An example of a head mountable device in a second state is shown;

[0020] Figure 5 An example of a head mountable device in a third state is shown;

[0021] Fig. 6A showing a cross-sectional view of an example hinge of a head mountable device in a first state;

[0022] Figure 6B showing a cross-sectional view of an example hinge of a head mountable device in a transient state;

[0023] Figure 6C showing a cross-sectional view of an example hinge of a head mountable device in a second state;

[0024] Figure 7 showing a cross-sectional view of an example hinge of a head mountable device in a third state;

[0025] Fig. 8A showing a cross-sectional view of an example hinge of a head mountable device prior to assembly;

[0026] Figure 8B showing a cross-sectional view of an example hinge of a head mountable device after assembly;

[0027] Fig. 9 showing a cross-sectional view of another example hinge of a head mountable device in a first state;

[0028] Fig. 10A showing a top view of another example hinge of a head mountable device in a first state;

[0029] Fig. 10B showing a top view of another example hinge of a head mountable device in a second state;

[0030] Fig.11 showing a cross-sectional view of an example hinge of a head mountable device in a transition state;

[0031] Fig.12 a cross-sectional view showing another example hinge of a head mountable device in a first state; and

[0032] Fig.13 A cross-sectional view of yet another example hinge of a head mountable device in a first state is shown.

[0033] Fig.14 A schematic diagram of an example spring under preload and hinge assembly load is shown. DETAILED DESCRIPTION

[0034] Reference will now be made specifically to the representative embodiments shown in the accompanying drawings. It should be understood that the following description is not intended to limit the embodiments to a preferred embodiment. On the contrary, it is intended to cover substitutions, modifications and equivalents that may be included within the spirit and scope of the described embodiments defined by the appended claims.

[0035] The following disclosure relates to electronic devices. More specifically, the present disclosure relates to head-mounted electronic devices. In at least one example, the head-mounted device may include an observation frame and a fixed arm extending from the observation frame. Examples of head-mounted electronic devices may include virtual reality or augmented reality devices with optical components. In the case of an augmented reality device, the optical glasses or frame may be worn on the user's head so that the optical window, which may include a transparent window, lens, or display, may be positioned in front of the user's eyes. In another example, the virtual reality device may be worn on the user's head so that the display screen is located in front of the user's eyes. The observation frame may include a housing or other structural components that support optical components (such as lenses or display windows) or various electronic components.

[0036] The optical electronic device may include one or more electronic components for operating the head-mounted electronic device. These components may include any components used by the head-mounted electronic device to generate a virtual or augmented reality experience. For example, the electronic components may include one or more projectors, waveguides, speakers, processors, batteries, circuit components including wires and circuit boards, or any other electronic components used in the head-mounted device to deliver augmented or virtual reality visual, sound, and other outputs. Various electronic components may be disposed in an electronic component housing. In some examples, various electronic components may be disposed in or attached to one or more of a display frame, an electronic component housing, or a fixed arm.

[0037] Examples of the present disclosure may include fixed arms extending from an observation frame, including a bistable hinge. A head-mounted device (including an optical electronic device) may include two opposing fixed arms that may apply pressure to or around the user's head to maintain the observation frame resting on the user's nose and / or cheek. In some examples, the fixed arms may rest on top of the user's ears to help secure the head-mounted optical device to the user's head. The bistable hinge enables a portion of the fixed arm to rotate in one direction around at least one pivot point. The hinge may allow the fixed arm to fold inward toward the display when not in use. The ability to fold when not in use increases the usability, transportability, and durability of the head-mounted device. In some examples, a portion of the fixed arm may rotate around a second pivot point in a direction opposite to the first direction. This allows the fixed arm to be unfolded relative to the display frame. This may contribute to the robustness and comfort of the head-mounted device by accommodating different head sizes and head shapes.

[0038] The bistable hinge may bias the fixed arm toward two stable positions. The stable positions may include an open position and a folded position. This may provide a certain tactile experience to the user while maintaining the integrity of the head-mountable device. The bistable hinge may include a 4-bar linkage combined with a spring to achieve the biasing effect. The 4-bar linkage may be disposed within the hinge, and the hinge may include other components that affect the behavior of the 4-bar linkage. The spring may be compressed during a portion of the transition from the open position to the folded position, and may be decompressed during another portion of the transition from the open position to the folded position. One or more of these aspects may work together to provide a more comfortable and satisfying experience to the user.

[0039] In some examples, the hinge can be assembled using a one-time snap-on method. This allows the internal components of the hinge to be accessible during assembly and inaccessible to the user once assembled. The hinge may also include one or more covers or flanges that protect the internal components of the hinge. Additionally or alternatively, one or more covers or flanges may hide the internal components of the hinge (e.g., from the user's perspective). This configuration can greatly improve the aesthetic quality of the fixed arm by creating a streamlined and simple exterior. The fixed arm may also include one or more covers or flanges that protect the internal components of the hinge and any electronic components. The covers and flanges also contribute to the aesthetic attributes of the fixed arm, and therefore contribute to the aesthetic attributes of the head-mounted device.

[0040] In some embodiments, the fixed arm may include a protrusion defined by and located on the lateral inner portion of the arm. The protrusion may provide space for a projector, other electrical components, or mechanical components of the hinge. Therefore, the hinge may be spaced apart from the display frame to accommodate the protrusion. The fixed arm may include multiple parts and one or more electronic components for operating a head-mounted electronic device. In an example in which the fixed arm includes multiple parts, the first part may include a first electronic device, and the second part may include a second electronic device. The first part may be connected to the second part at a hinge, and the second part may include a second electronic device. In at least one example, the first electronic device and the second electronic device may be electrically connected to an electrical connector extending through the hinge. The second part may rotate relative to the first part to adjust the angle of the second part relative to the first part. The electrical connector may extend through the hinge so that the rotation of the second part at the hinge does not affect the electrical connectivity of the first electrical component with the second electrical component via the electrical connector.

[0041] Reference below Figures 1 to 11To discuss these embodiments and other embodiments. However, those skilled in the art will readily appreciate that the detailed description of these figures given herein is for illustrative purposes only and should not be construed as limiting. In addition, as used herein, a system, method, product, component, feature, or sub-feature comprising at least one of a first option, a second option, or a third option should be understood to refer to a system, method, product, component, feature, or sub-feature comprising one of each listed option (e.g., only one first option, only one second option, only one third option), a plurality of a single listed option (e.g., two or more first options), two options at the same time (e.g., one first option and one second option), or a combination thereof (e.g., two first options and one second option).

[0042] Figure 1 A top view of an example of a head-mounted electronic device 100 worn on a user's head 101 is shown. The device 100 may include a display frame 102 configured to fix one or more optical lenses or display windows in front of the user's eyes. As used herein, the terms "display frame," "frame," and "housing" may refer to a portion of a head-mounted device that includes a display or display window. As used herein, the terms "display" or "display window" may refer to a lens, a cover glass, or another surface designed to display a projected image on a slightly transparent surface, or any other component that presents visual media or information to a user. The device 100 may also include one or more fixed arms 104a, 104b that are fixed to the display frame 102 and extend distally toward the back of the user's head 101. The fixed arms 104a, 104b may apply opposing pressure to the sides of the user's head 101, as shown, to fix the device 100 to the user's head 101. The fixed arms 104a, 104b may also rest on the user's ears 103 and the device 100 may be fixed via friction between the fixed arms 104a, 104b and the head 101.

[0043] However, as noted above, a user's head 101 may have a unique shape and size, with certain anatomical structures and positional configurations varying across a user population. For example, the head 101 may include a unique position for each ear 103 such that the arms 104a, 104b may be positioned relative to the user. Figure 1The angle of the housing 102 of the device 100 shown may be different for another user. Generally speaking, the arms 104a, 104b may contact the head to apply comfortable opposing pressure to the sides of the user's head that counteracts the force that pulls the viewing frame 102 proximally away from the user's head 101. Such forces may be generated, for example, due to bumps and collisions or other events during normal use of the device 100. Different head sizes or shapes may cause the angle between the arms 104a, 104b and the display frame to change, thereby affecting the force applied to the user's head and, therefore, affecting the performance and comfort of the head mountable device 100.

[0044] Figure 1 Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Figure 1 Examples of devices, features, components, and parts are shown.

[0045] Figure 2 shows a Figure 1 The size and shape of the head 101 shown may be adapted for users with heads 201 of different sizes and shapes. The same or similar head-mounted electronic device 200 may include a viewing frame 202 that is at least partially secured to the user's head 201 via one or more securement arms 204a, 204b. As shown, the securement arms 204a, 204b may extend distally along opposite sides of the head 201. In the example shown, the arms 204a, 204b may extend above the user's ears 203 and toward the back of the user's head 201. However, as Figure 2A As shown, the shape of the user's head 201 may cause a difference between the arms 204a, 204b and the display frame 202. Figure 1 In other examples, such as Figure 2B As shown, the shape of the user's head 201 may cause a difference between the arms 204a, 204b and the display frame 202. Figure 1 In at least one example, arms 204a, 204b can be configured to conform (to varying degrees) to a user's head 201 while maintaining a comfortable and functional amount of opposing pressure on the user's head. For example, Figure 2B The arms 204a, 204b are shown maintaining contact with the head 201 and bending behind the ears 203 at least partially with the curvature of the head 201. In contrast, as the arms advance distally from the ears 203, Figure 2A The arms 204a, 204b in the embodiment maintain some separation relative to the head 201.

[0046] Figure 2A and Figure 2B Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Figure 2A and Figure 2B Examples of devices, features, components and parts are shown below. Figure 3 Further details of an exemplary electronic device are provided

[0047] Figure 3 A side view of an example of a head mountable device 300 is shown, which includes a frame 302 and a fixed arm 304 extending from the frame 302. As indicated above, in some examples, the arm 304 may be hingedly or rotatably attached to the frame 302. In some examples, the arm 304 may be fixedly or non-movably attached or fixed to the frame. In at least one example, the arm 304 may include: a first portion 306, which includes a first electronic component 312; and a second portion 308, which is rotatably connected to the first portion 306 at a hinge 310. The second portion 308 may include a second electronic component 314. In addition, at least one example may include an electronic circuit component 316 extending through the hinge 310 and electrically connecting the first electronic component 312 and the second electronic component 314. As used herein, the terms "joint" and "hinge" may refer to a component or a group of components that enable a portion of the arm 304 to rotate or move relative to another portion. For example, via hinge 310, second portion 308 can rotate or move relative to first portion 306. In some examples, first portion 306 and second portion 308 can be separate pieces, such that hinge 310 includes one or more components that rotatably connect the two separate pieces. More details about various examples of hinges and hinge structures are given below with reference to other figures.

[0048] The first electronic component 312 and the second electronic component 314 may include any number of electronic components configured to operate through the device 300 and produce a virtual or augmented reality experience to the user. For example, the first electronic component 312 may include a projector, a waveguide, a speaker, a processor, or a memory component, and the second electronic component 314 may include a battery or any other component, including those described with reference to the first electronic component 312. In examples where the second electronic component 314 includes a battery, the battery may be connected to the first electronic component 312 via the electronic circuit component 316 to deliver power to the first electronic component 312.

[0049] In at least one example, the electronic circuit component 316 may include one or more conductive wires, flexible members, resistors, circuit boards, or any other electronic circuit components connecting the first electronic component 312 and the second electronic component 314. In at least one example, the arm 304 may include a housing defining an outer surface and an inner volume. The first electronic component 312, the second electronic component 314, and / or the electronic circuit component may be disposed within the inner volume so that these components are hidden from view. Alternatively, one or more of the components 312, 314, and 316 shown may be disposed on the housing (or at least partially exposed through the housing). The electronic circuit component 316 may extend through the hinge 310 so that the functionality of the hinge 310 and the electronic circuit component 316 is not obstructed. More details about examples of the hinge 310 and the electronic circuit component 316 are given below with reference to other figures.

[0050] In at least one example, the device 300 may include an optical device, and the first portion 306 of the arm 304 may be referred to as a proximal portion. In such an example, the second portion 308 of the arm 304 may be referred to as a distal portion. The terms "proximal" and "distal" may be used as relative terms (e.g., with reference to the position of various components of the device described herein relative to the viewing frame 302 of the device 300). Orientation relative to the "proximal" and "distal" directions of the devices described herein is described in detail in the following examples. Figure 3 Shown in.

[0051] In some examples, the electronic circuit component 316 can extend from the proximal portion 306 to the distal portion 308 via the hinge 310. In such examples, the electronic circuit component 316 is protected within the interior volume of the arm 304 within the proximal portion 306, the distal portion 308, and the hinge 310. In at least one example, the distal portion 308 is rotatable relative to the proximal portion 306 at the joint 310 such that the angle between the proximal portion 306 and the distal portion 308 is variable. In this manner, in at least one example, a user can rotate the distal portion 308 relative to the proximal portion 306 to change the angle of the arm 304 relative to the distal portion 308. Figure 1 2. For example, a user may fold the distal portion 308 to be approximately perpendicular relative to the proximal portion 306 for storage.

[0052] In at least one example, the joint 310 can include a biasing member disposed between the distal portion 308 and the proximal portion 306. The biasing member can include any number of mechanisms, including springs and / or elastic materials, such that the position of the distal portion 308 can be elastically manipulated relative to the proximal portion 306 without permanently affecting the angles and positions of the arms 304 and their portions 306, 308. For example, when a user puts on and / or takes off the device 300 (or when otherwise handling or using the device 300), the user can elastically expand the distance between the opposing arms 304 of the device without plastically changing the relative position and angle between the proximal portion 306 and the distal portion 308.

[0053] Figure 3 Any of the features, components and / or parts shown (including their settings and configurations) may be included alone or in any combination in any other examples of devices, features, components and parts shown in other figures described herein. Similarly, any of the features, components and / or parts shown or described with reference to other figures (including their settings and configurations) may be included alone or in any combination in any other examples of devices, features, components and parts shown in other figures described herein. Figure 3 The following are examples of devices, features, components and parts shown. FIG. 4A to FIG. 4B Further examples of electronic devices including hinges that can be in various positions are discussed.

[0054] Figure 4A An example of a portion of a head mountable device 400 in a first state is shown, the head mountable device including a display frame 402, a proximal portion 406, a distal portion 408, and a hinge 410. Figure 4A The first state shown may also be referred to as an "open position". In the open position, the proximal portion 406 and the distal portion 408 are substantially parallel to each other, allowing a user to put on and take off the head-mountable device 400. In some embodiments, the proximal portion 406 may be longer than a corresponding portion of a conventional head-mountable device or glasses. This increases the distance between the display frame 402 and the hinge 410. In some cases, the increased space may accommodate electrical components 412, such as Figure 3406. The electronic component 412 may be positioned within a volume defined by the proximal portion 406, partially disposed within a volume defined by the proximal portion 406, or on a surface of the proximal portion 406, on the inside or outside of the proximal portion 406 relative to the user. Specifically, the electronic component may be a projector. The projector may include one or more components that output a graphical representation or image (e.g., a digital image projected from a projector or otherwise transmitted to a display medium) via projection. If the projector is too close, the image may be undesirably small. In contrast, if the projector is too far away, the image may be distorted or lose image quality. Therefore, the space between the display frame 402 and the hinge 410 may facilitate a desired image size, quality, or other attributes to provide a satisfactory experience to the user.

[0055] Figure 4B An example of a head mountable device 400 in a second state is shown, the head mountable device comprising Figure 4A The same or similar parts shown in the second state may also be referred to as a "folded position". In the folded position, the distal portion 408 may be angled relative to the proximal portion. In some embodiments, the angle formed between the proximal portion and the distal portion may be between 80 degrees and 100 degrees. The folded position of the distal portion 408 may contribute to the portability of the head-mounted device 400. For example, the folded position of the head-mounted device 400 reduces the footprint of the device, making it easier to carry, pack, store, and transport. The folded position of the head-mounted device 400 may also contribute to the robustness of the device. When the distal portion 408 is in the open position, the distal portion may get stuck in or catch foreign objects. When in the open position, the distal portion 408 is also more exposed to external forces or torques generated by falling, storage, or transportation than in the folded position. Therefore, the folded position of the distal portion 408 can prevent damage to the head-mounted device 400.

[0056] In some embodiments, hinge 410 can be a bistable hinge. As used herein, the term "bistable hinge" refers to a hinge that is biased to have two stable positions. A stable position may refer to a position that a hinge will maintain when subjected to typical gravity in the case of handling or moving the head-mounted device 400, regardless of orientation. A linear spring, a torsion spring, a tension member, a material property, a component geometry, a magnet, or any combination thereof (including methods or components not specified herein) may be used to bias the hinge. For example, a bistable hinge may return to a stable position when the displacement reaches a specified angle, and may snap into a second position when the displacement exceeds a specified angle. A bistable hinge such as hinge 410 may maintain the state of the distal portion 408 desired by the user. For example, a bistable hinge 410 may prevent the distal portion 408 from entering an open position during storage or transportation. The bistable hinge 410 may also prevent the distal portion 408 from entering a folded position, thereby making the device easy for the user to use. The bi-stable hinge 410 may also improve the tactile properties of the head mountable device 400 .

[0057] Figure 4A and Figure 4B Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Figure 4A and Figure 4B Examples of devices, features, components and parts are shown below. Figure 5 An example of a head mountable device in a third state is provided.

[0058] Figure 5 5 shows an example of a head-mountable device 500 in a third state, the head-mountable device including a display frame 502, a proximal portion 506, a distal portion 508, and a hinge 510. The third state may also be referred to as a "deployed position". As used herein, the terms "deployed", "deployment action", and "deployed position" refer to the distal portion 508 being in a position relative to the display frame 502. Figure 4B Displacement in the opposite direction of the folded position. In some embodiments, the distal portion 508 can be displaced between about 5 degrees and about 15 degrees relative to the proximal portion in a direction opposite to the direction of the folded position. Other example ranges of displacement are also contemplated herein. For example, the distal portion 508 can be displaced between about 0 degrees and about 5 degrees, between 15 degrees and 25 degrees, between 25 degrees and 35 degrees, between 35 degrees and 45 degrees, or within another angular range not mentioned herein in a direction opposite to the direction of the folded position relative to the proximal portion.

[0059] The head mountable device 500 may also include electronic components 512 positioned within the volume defined by the proximal portion 506, partially disposed within the volume defined by the proximal portion 506, or on a surface of the proximal portion 506. In some cases, the electronic components 512 may include a projector and / or a waveguide. The deployed position may allow the head mountable device 500 to accommodate different head sizes or shapes by changing the angle between the proximal portion 506 and the distal portion 508, thereby affecting the forces applied to the user's head and thus affecting the performance and comfort of the head mountable device 500.

[0060] The deployed position may also contribute to the robustness of the head mountable device 500 by allowing the distal portion 508 to shift in response to external forces. When a force is applied to the distal portion 508 (such as a drop event or a force applied by a user), the bistable nature of the hinge 510 may absorb the energy applied to the distal portion 508, thereby preventing the head mountable device 500 from breaking or at least reducing the amount of damage to the head mountable device 500. In some cases, the distal portion 508 may also shift a sufficient amount to stop an active foreign object from exerting force on the distal portion 508. For example, if the distal portion 508 is caught on a user's clothing, the displacement of the distal portion 508 in the deployed position of the hinge 510 may allow the distal portion 508 to slide over the clothing, whereas a hinge positioned in an deployed state lacks structure and may overextend, become damaged, or break in similar situations. The deployment action of the hinge 510 may also increase the comfort of the head mountable device 500 when being put on or taken off by the user. The distal portion 508 can be displaced during the donning or doffing process to reduce the force applied to a portion of the user's head and return to the open position when fully donned or doffed, thereby providing sufficient force to secure the head mountable device 500 to the user's head.

[0061] Figure 5 Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Figure 5 Examples of devices, features, components and parts are shown below. FIG. 6A to FIG. 6C Further discussion of the inner workings of the head-mounted device, examples of components, and accessories.

[0062] Fig. 6A A cross-sectional view of an example hinge 610 of a head mountable device in an open position is shown, the hinge including a spring 618, a rotating lever 620, a connecting lever 622, and a follower 624. In at least one example, the hinge 610 is a bistable hinge. Fig. 6A The open position shown can be one of the two stable positions of the bistable hinge 610. The connecting rod can include a hook 626 at one distal end. The rotating rod 620 can be connected to the proximal portion 606, and the connecting rod 622 can be connected to the spring 618 via the hook 626. The hook 626 can be connected to the distal end of the spring 618 directly or via the intermediate component 642. As used herein, the terms "rotating rod" and "connecting rod" refer to the mechanical components of the hinge. The rotating rod 620 and the connecting rod 622 are separate and different, although they can rotate, withstand forces and promote the movement of the hinge 610. In some embodiments, the proximal portion 606, the distal portion 608, the rotating rod 620, and the connecting rod 622 can include a 4-bar linkage. As used herein, the term "follower" refers to a pin, a protrusion, or other structure that limits the movement of the rotating rod 620, the connecting rod 622, or both. In some embodiments, the spring 618 is disposed axially within the distal portion 608 .

[0063] In the open position, the rotating rod 620 and the connecting rod 622 are configured so that the spring 618 is in an uncompressed or unbiased state. The rotating rod 620 and the connecting rod 622 can be configured to form an angle between 0 degrees and 90 degrees at any point in the entire range of motion of the hinge 610. The larger angle formed by the rotating rod 620 and the connecting rod 622 increases the total effective length of the system of the rods 620 and 622. Conversely, the smaller angle formed between the rotating rod 620 and the connecting rod 622 reduces the effective length of the system of the rods 620 and 622. As used herein, the term "effective length" refers to the distance between the points of action in the system, rather than the total length of each component in the system. For example, the effective length may refer to the distance between the connection between the rotating rod 620 and the proximal portion 606 and the connection between the connecting rod 622 and the distal portion 608. The follower 624 can limit the position of the rotating rod 620 and the connecting rod 622 to produce a desired angle or path of motion. In the open position, the follower 624 may prevent the rotating link 620 and the connecting link 622 from rotating in a manner that affects the length of the spring 618 .

[0064] In some examples, the connecting rod 622 may include a bend so that it affects the over-center angle of the bistable hinge 610. As used herein, the term "over-center angle" refers to the angle when the force biasing the hinge toward the open position and the force biasing the hinge toward the folded position are equal. In other words, the over-center angle is the point at which the total bias of the hinge changes from the open position to the folded position or vice versa. In some embodiments, the over-center angle may be at 45 degrees. The over-center angle of 45 degrees may promote a satisfactory tactile experience, wherein the opening and closing of the hinge feels balanced, controlled, smooth, tight and firm (e.g., without tilt). In other embodiments, the connecting rod 622 may be configured to produce an over-center angle other than 45 degrees. This may be done for a variety of reasons, including but not limited to changing or improving the user's tactile experience, protecting the device in a drop scenario, preventing the arm from colliding with the lens when closed, and / or changing the amount of pressure applied to the user's head in the open position.

[0065] In some embodiments, the proximal portion 606 and the distal portion 608 may form or define an outer gap 628. By not allowing the proximal portion 606 and the distal portion to abut each other at the outer gap 628, the outer gap 628 can reduce the chance of entrapment of a user or a foreign object. The outer gap 628 can also prevent the material of the proximal portion 606 or the distal portion 608 from bending or breaking in situations where abutment is possible. The outer gap 628 can also improve the aesthetic attributes of the hinge 610 by providing evidence of high build quality and quality control to the user. The distal portion can also include a cover 630. The cover 630 can prevent dirt, dust or other contaminants from entering the hinge 610. In the open position, the cover 630 can particularly prevent contaminants from entering the hinge 610 through the outer gap 628. In some examples, the proximal portion 606 can include or define an internal cutout 632 configured to receive the cover 630. In some examples, internal cutout 632 can allow proximal portion 606 to block cover 630 from a user's view, thereby helping to improve the aesthetic attributes of hinge 610 .

[0066] In some embodiments, a conductive cable, flexible member, or other electronic component 654 may be routed through the hinge 610. In some examples, a conductive cable, flexible member, or other electronic component 654 may be routed through the connecting rod 622 (e.g., Fig. 6A In other examples, the conductive cable, flexible member or other electronic component 654 may be guided through the space formed between the cover 630 and the follower 624. The conductive cable, flexible member or other electronic component 654 may be connected Figure 3 The first electronic component 312 and the second electronic component 314 are described.

[0067] Figure 6BA cross-sectional view of an example hinge 610 of a head-mountable device in a transition state is shown. The transition state may occur during a folding cycle of the hinge 610. As used herein, a "folding cycle" of the hinge 610 refers to the process of the hinge 610 transitioning from an open position to a folded position. In the transition state, the hinge 610 may rotate in a first direction about a first pivot point 634. In some examples, the follower 624 limits the movement of the rotating rod 620 and the connecting rod 622 so that in the open position, the angle formed by the rotating rod 620 and the connecting rod 622 is less than the angle between the rotating rod 620 and the connecting rod 622. This can shorten the effective length of the system of rods 620, 622, and can cause the spring 618 to compress. The compression spring 618 can bias the hinge 610 to one of two stable positions (i.e., an open position or a closed position) by applying pressure or force on the connecting rod 622. Thus, in some embodiments, the spring 618 may be compressed during a first portion of the folding cycle (i.e., when the angle formed between the proximal portion and the distal portion is less than approximately 45 degrees) and decompressed during a second portion of the folding cycle (i.e., when the angle formed between the proximal portion and the distal portion is greater than approximately 45 degrees).

[0068] In some examples, when in the transition state, the cover 630 can protect the internal components of the hinge 610. In addition to protecting the hinge 610 from contaminants, the cover 630 can also protect the hinge components from larger foreign objects that can damage the hinge 610. In this way, the cover 630 can contribute to the longevity and robustness of the hinge 610. In the transition state, the cover 630 can also be partially hidden by the proximal portion 606.

[0069] Figure 6C A cross-sectional view of an example hinge 610 of a head mountable device is shown in a folded position. Figure 6C The folded position shown may be one of two stable positions of the bistable hinge 610. In the folded position, the effective length of the system of rods 620, 622 is comparable to Figure 6B The effective length of the system of the illustrated rods 620, 622 is longer. In the folded position, the rods 620, 622 can be configured such that the spring 618 is in an uncompressed or unbiased state. In some embodiments, the spring 618 can be attached to the system via the connecting rod 622. The cover 630 can protect components of the hinge 610, such as FIG. 6A to FIG. 6B In some embodiments, when in the closed state, the cover 630 can be partially hidden within the proximal portion 606. This can prevent contaminants or foreign objects from entering or damaging the hinge 610, even when in the closed state. This also helps Figure 6B The aesthetic properties of the hinge 610 are described.

[0070] FIG. 6A to FIG. 6CAny of the features, components, and / or parts shown (including arrangements and configurations thereof) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including arrangements and configurations thereof) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. FIG. 6A to FIG. 6C Examples of devices, features, components and parts are shown below. Figure 7 An example of the inner workings, components, and attachments of a head mountable device in a third state is provided.

[0071] Figure 7 Shows something like FIG. 6A to FIG. 6C 6 but in a cross-sectional view of an example hinge 710 of a head-mountable device in an unfolded position. Hinge 710 may include a proximal portion 706, a distal portion 708, a spring 718, a rotating rod 720, a connecting rod 722, and a follower 724. In at least one example, hinge 710 is a bistable hinge. The connecting rod may include a hook 726 at one distal end. The rotating rod 720 may be connected to the proximal portion 706, and the connecting rod 722 may be connected to the distal end of the spring 718 via the hook 726. The hook 726 may be connected to the spring 718 directly or via an intermediate component. In some embodiments, the spring 718 is axially disposed within the distal portion 708.

[0072] In the deployed position, the distal portion 708 rotates relative to the proximal portion 706 about the second pivot point 736 in a second rotational direction opposite to the first rotational direction. In some embodiments, the pivot point 736 can be a virtual pivot point. As used herein, the term "virtual pivot point" refers to a point or axis about which a hinge located in free space rotates. In other words, the virtual pivot point is not located within the object that rotates about the virtual pivot point. In some examples, the proximal portion 706 and the distal portion 708 can form an outer gap 728. The pivot point 736 can be located at or near the outer gap 728. The size of the outer gap 728 in the deployed position can be similar to Fig. 6A The outer gap 628 of the embodiment is the same or substantially the same size in the open position. The outer gap 728 is the same or substantially the same size in the open position. Fig. 6A The constant dimensions in both the deployed and open positions shown can contribute to the aesthetic attributes of hinge 710 by maintaining a constant appearance when the hinge is in different positions. The constant appearance of hinge 710 can provide evidence of high build quality, quality control, and design-oriented engineering to the user.

[0073] In some embodiments, the rotating rod 720, the connecting rod 722, the follower 724 and the spring 718 facilitate the deployed position. For example, when the hinge 710 rotates about the virtual pivot point 736, the follower 724 exerts a force on the rotating rod 720 and the connecting rod 722, which causes the angle formed by the rotating rod 720 and the connecting rod 722 to be relative to the angle formed by the rotating rod 720 and the connecting rod 722. Fig. 6A The corresponding angle formed in the open position shown is reduced. This reduces the effective length of the system of rods 720, 722, thereby compressing spring 718. In turn, compression of spring 718 pulls hinge 710 toward Fig. 6A The distal portion 708 may also include a cover 730. The cover 730 may include a flange 740. The flange 740 may protect components of the hinge 710 when in the deployed position and block components of the hinge 710 from being seen by a user. The distal portion 708 may be configured to receive the flange 740 when not in the deployed position.

[0074] Figure 7 Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Figure 7 Examples of devices, features, components and parts are shown below. FIG. 8A to FIG. 8B Example hinge assembly and attachment methods are provided.

[0075] Fig. 8A A cross-sectional view of an example hinge 810 of a head-mountable device during assembly is shown, the hinge including a proximal portion 806, a distal portion 808, a spring 818, a rotating rod 820, a connecting rod 822, and a follower 824. The connecting rod 822 may include a hook 826 at one distal end. Before assembly is complete, the internal components of the hinge 810 may be visibly exposed. This allows the insertion of various mechanical components, the assembly of mechanical components, or the inspection of the mechanical components of the hinge 810. This also allows the insertion, connection, or guidance of electronic components, such as cables or flexible components, through the hinge 810.

[0076] In some embodiments, the distal portion may include an intermediate component 842 connected to the spring 818. The intermediate component 842 may include a pin, a rod, or another structure designed to receive the hook 826 via a one-time snap function. As used herein, the term "one-time snap" refers to a process in which one component is configured to receive the geometry of another component only once, and then connected to each other, thereby preventing difficult or destructive separation, or specially designed manufacturer tools. An example of a one-time snap function can be a plastic part designed to deform around another component during the receiving process and then return to its original shape once received. The geometry of the plastic part after being received prevents separation of the two parts. The intermediate component 842 may also abut a retaining portion 844 of the distal portion 808. The retaining portion 844 may be a cylindrical member, one or more radial protrusions, or any other geometric shape. The retaining portion 844 prevents the intermediate component 842 from axially translating toward the spring 818. This allows the spring to be in a stable open and folded position (such as Fig. 6A and Figure 6C ) is also in tension, which creates a stronger bias toward a stable position for hinge 810.

[0077] Figure 8B A cross-sectional view of an example hinge 810 of a head-mountable device after assembly is shown. After assembly, the hook 826 connecting the rod 822 is attached to the middle part 842. In some embodiments, the proximal portion may include a cover 830. The cover 830 may include a flange 840. The distal portion 808 may include a cutout 846 configured to receive the flange 840. After assembly, the flange 840 may be received by the cutout 846 to protect the internal components of the hinge 810 and hide the internal components of the hinge 810 from being seen by the user. The rods 820, 822 may be attached to each other or to the middle part 842, the proximal portion 806, the distal portion 808, or other components via a variety of methods. The attachment method may include laser welding, metal sheet snaps, screw bosses, and other methods not mentioned herein.

[0078] Fig. 8A and Figure 8B Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Fig. 8A and Figure 8B Examples of devices, features, components and parts are shown below. Fig. 9 Other example configurations of hinges for use in head mountable devices are given.

[0079] Fig. 9 A cross-sectional view of another example hinge 910 of a head mountable device in a first state is shown, the hinge comprising a proximal portion 906, a distal portion 908, a rotatable member 952, a sliding member 958, a piston 962, and one or more springs 918. In some embodiments, the distal portion 908 may include a cover 930 and an insert 956. The insert 956 may be configured to retain the one or more springs 918. In some embodiments, the insert 956 may perform a sliding function to compress the one or more springs 918. The proximal portion 906 may be configured to receive the cover 930 when the hinge 910 is in an open position. In the open position, the cover 930 may protect the inner workings of the hinge 910 while hiding the hinge 910 from view by the user.

[0080] In some embodiments, several components of the hinge 910 may be disposed within the distal portion 908 and may rotate with the distal portion 908 when moving from an open position to a folded position or vice versa. For example, a sliding member 958, a piston 962, and one or more springs 918 may be disposed within the distal portion 908 and may rotate with the distal portion. By including one or more hinge components within the distal portion 908, the proximal portion 906 may be made smaller (or have a thinner profile). In these or other examples, the proximal portion 906 is closer to the display of the head-mounted device, and the smaller proximal portion 906 may facilitate space for improved and / or larger projectors, better projection for increased field of view or image resolution / quality, larger display portions, etc. Another potential benefit of arranging the hinge components within the distal portion 908 is an increase in available space within the proximal portion 906. The space within the proximal portion may be used to accommodate electronic components, such as processors, batteries, conductive cables, projectors, waveguides, or other electronic components not specified herein.

[0081] To facilitate this, the rotatable member 952 may be attached to the proximal portion 906 and may include one or more recesses 964 configured to receive the sliding member 958. The sliding member 958 may be received by the one or more recesses 964 in the open position and in the folded position. In the open position and in the folded position, the one or more springs 918 may be slightly compressed or not compressed. In the transition state, the sliding member 958 may be displaced from the one or more recesses 964 toward the one or more springs 918. The sliding member 958 may be connected to the piston 962 so that when the sliding member 958 is displaced toward the one or more springs 918, the piston 962 compresses the one or more springs 918. In some examples, the sliding member 958 may be connected to the piston 962 via a static or rotatable method. For example, the sliding member 958 may be connected to the piston via laser welding or a press fit. In other examples, the sliding member 958 may be connected to the piston 962 via a screw boss or a pin. In this way, when in the transition state, the one or more springs 918 bias the hinge 910 toward the open position or the folded position. This biasing (coupled with the stability of the hinge in the open position and the folded position) creates a bistable nature for hinge 910 .

[0082] In the deployed position, the insert 956 compresses the one or more springs 918. By compressing the one or more springs 918 in the deployed position, the hinge 910 can be biased toward the open position. In the deployed position, the angle and rotation of the distal portion 908 can be defined by the curvature in the sliding member 958. The curvature defined by the sliding member 958 can create a virtual pivot point about which the distal portion 908 rotates when entering or leaving the deployed position. This can maintain a constant gap between the corners of the proximal portion 906 and the distal portion 908, as described above in Fig. 6A discussed in .

[0083] In some embodiments, the conductive cable, flexible member or other electronic component 954 may be guided through the hinge 910. In some examples, the conductive cable, flexible member or other electronic component may be guided from the proximal portion through the space created between the hinge members 952, 956 and the cover 930 into the distal portion 908. In some examples, the internal geometry of the hinge 910 may affect the length of the route occupied by the conductive cable, flexible member or other component. For example, the length required for the conductive cable, flexible member or other electronic component to pass through the hinge 910 may be shorter when the hinge 910 is in an open position, and may be longer when the hinge 910 is in a closed position. The range of the length difference may be in the range of 0mm to 2mm, 2mm to 4mm, 4mm to 6mm or more.

[0084] Fig. 9Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Fig. 9 The following section describes another example of a hinge configuration including an arm housing.

[0085] Fig. 10A A top view of another example hinge 1010 of a head mountable device in an open position is shown, the hinge comprising a proximal portion 1006, a distal portion 1008, and a protrusion 1048. In some examples, the protrusion 1048 can accommodate components of the hinge 1010. In other embodiments, the protrusion 1048 can accommodate electrical components, such as a projector, a speaker, a processor, a battery, or a memory component. In other embodiments, the protrusion 1048 can accommodate a combination of hinges and electrical components. The protrusion 1048 can provide space for the hinge or electrical components while maintaining an aesthetically pleasing exterior.

[0086] Fig. 10B A top view of another example hinge of a head mountable device in a folded position is shown, the hinge including a proximal portion 1006, a distal portion 1008, and a protrusion 1048. The protrusion 1048 may also include a cover 1030 to protect the hinge and electrical components housed by the protrusion 1048. The cover 1030 may also be used to hide the hinge or electrical components from view by the user.

[0087] Fig. 10A and Fig. 10B Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Fig. 10A and Fig. 10B The following sections illustrate the inner workings of the arm and cover portions of a hinge for a head-mountable device.

[0088] Fig.11 Shows Fig. 10A and Fig. 10B110 is shown in a cross-sectional view of a hinge. Hinge 1110 is shown in a transition state, and includes a proximal portion 1106, a distal portion 1108, and a protrusion 1148. The distal portion 1108 may include a curved arm 1150 attached to a rotatable member 1152. In some embodiments, the hinge 1110 may rotate around the rotatable member 1152. The protrusion 1148 may include a cover portion 1130 and a flange portion 1140. In some examples, the cover portion 1130 and the flange portion 1140 may be configured to receive the curved arm 1150 so that the internal components of the hinge 1110 are hidden at all points along the range of motion of the hinge 1110. The cover portion 1130 and the flange portion 1140 may be used together as a sleeve to hold the curved arm 1150. In the transition state, the cover portion 1130 may form an empty space with the rotatable member 1152, thereby allowing the distal portion 1108 to return to the open position.

[0089] The cover portion 1130, the flange portion 1140, and the bending arm 1150 are configured to facilitate articulation with minimal visible parting lines and ports. As used herein, the term "parting line" refers to a line formed when one part abuts another part, particularly in a slidable interface. For example, multiple sliding parts or multiple sides of a sliding part may produce more parting lines, which may reduce the aesthetic attributes of the hinge. A higher number of parting lines may also increase possible failure points through stress concentration, manufacturing defects, or other reasons. As used herein, the term "port" refers to an opening in a part that is specifically configured to receive another part in at least one position. For example, an opening defined by the cover portion 1130 and the flange portion 1140 may define a port configured to receive the bending arm 150. The hinge 1110 is configured so that the port defined by the cover portion 1130 and the flange portion 1140 is not visible from the outside of the hinge.

[0090] In some embodiments, the rotatable member 1152 may be attached to the flexure arm 1150 via one or more fasteners, adhesive materials, or other attachment methods. In some embodiments, the rotatable member may be accessed through the protrusion 1148 and attached to the flexure arm 1150 via a screw. In some examples, a conductive cable, flexible member, or other electronic component may be guided through the hinge 1110. For example, the conductive cable or flexible member may be guided from the protrusion 1148 along a portion of the rotatable member 1152 and onto an inner portion of the flexure arm 1150. The conductive cable or flexible member may then pass through an opening (not shown) in the flexure arm 1150 and extend into the distal portion 1108. In some embodiments, the conductive cable or flexible member may be attached to one or more components of the hinge 1110, including but not limited to the flexure arm 1150 and the rotatable member 1152. The conductive cable or flexible member may be attached via a temperature sensitive adhesive (TSA) or a pressure sensitive adhesive. In some examples, the internal geometry of the hinge 1110 may affect the connection between the conductive cable, flexible member, or the flexible member as described above. Fig. 9 The length of the route occupied by the other component in question.

[0091] Fig.11 Any of the features, components, and / or parts shown (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Similarly, any of the features, components, and / or parts shown or described with reference to other figures (including their arrangements and configurations) may be included alone or in any combination in any other examples of devices, features, components, and parts shown in other figures described herein. Fig.11 The following sections deal with the examples of devices, features, components, and parts shown in the Fig.11 The inner workings, components and accessories of the head-mountable device described.

[0092] Fig.12A cross-sectional view of another example hinge 1210 of a head mountable device in an open position is shown, the hinge including a proximal portion 1206 and a distal portion 1208. The proximal portion 1206 may include a protrusion 1248 defining a side of the proximal portion 1206. The distal portion 1208 may include a flexure arm 1250 and a rotatable member 1252. The hinge 1210 may also include an insert 1256 disposed within an interior volume defined by the proximal portion 1206. The insert 1256 may substantially fill the interior volume defined by the proximal portion 1206 and may be secured to the proximal portion 1206 via fasteners, adhesives, or other methods not listed herein. The insert 1256 may be configured to receive a sliding member 1258. The rotatable member 1252 may be at least partially disposed within an opening in the sliding member 1258. The sliding member 1258 may also include a convex corner 1260 received by one or more recesses 1264 in the rotatable member 1252, thereby preventing the rotatable member 1252 from rotating without applying an external force (such as a user opening or folding the hinge 1210). The sliding member 1258 may also be attached to the one or more springs 1218 via one or more pistons 1262.

[0093] When the distal portion 1208 is rotated toward the folded position, the rotatable member 1252 forces the convex corner 1260 of the sliding member 1258 to leave the recess 1264 in the rotatable member 1252, thereby setting the sliding member 1258 toward the distal portion 1208. The setting of the sliding member 1258 toward the distal portion 1208 can be referred to as an elevated position. In the elevated position, the sliding member 1258 pulls one or more pistons 1262 toward the distal portion 1208, thereby compressing one or more springs 1218. The resistance of the spring 1218 provides a biasing force that facilitates the bistable nature of the hinge 1210. When the distal portion 1208 approaches the folded position, the convex corner 1260 is received by the recess 1264 in the rotatable member 1252. This allows the sliding member 1258 to leave the elevated position and allows the one or more springs 1218 to be decompressed via the piston 1262. In this manner, each recess 1264 in the rotatable member 1252 corresponds to a stable position of the hinge 1210 .

[0094] When the distal portion 1208 is in the deployed position, the rotatable member 1252 pulls the sliding member 1258 away from the proximal portion 1206. This compresses the one or more springs 1218 via the one or more pistons 1262, thereby setting the hinge 1210 toward a stable open position. The insert 1256 constrains the movement of the sliding member 1258 to an arc defined by the cutout in the insert 1256. The arcuate path of the sliding member 1258 creates a virtual pivot point outside the interior volume defined by the proximal portion 1206 and the distal portion 1208. This maintains a constant gap between the corners of the proximal portion 1206 and the distal portion 1208, as described above in Fig. 6A In some embodiments, the protrusion 1248 may include a notch 1266 that limits the travel of the sliding member 1258. This can prevent the distal portion 1208 from separating from the proximal portion 1206. In this way, the notch 1266 can prevent the hinge 1210 from being damaged or broken. When the distal portion 1208 returns to the open position, the sliding member 1258 is received by the insert 1256, thereby allowing the one or more springs to be decompressed via the one or more pistons 1262.

[0095] In some embodiments, the sliding member 1258 can be connected to one spring 1218. In other embodiments, the sliding member 1258 can be connected to multiple springs, such as three springs 1218. In some embodiments, one or more springs 1218 can be axially disposed within the protrusion 1248. The use of three springs 1218 can allow each spring 1218 to exert a smaller force, which facilitates the use of smaller springs 1218. By using smaller springs (e.g., having a smaller diameter), the moment arm can be extended, which further reduces the amount of force and thus reduces the size required for each spring 1218. This can produce a more compact mechanism, which can increase the available space within the proximal portion 1206. A smaller mechanism can also facilitate a smaller overall product by reducing the minimum size of the proximal portion 1206.

[0096] Hinge 1210 may also include electronic circuit components 1254. In some embodiments, electronic circuit components 1254 may be one or more conductive wires or flexible members. Electronic circuit components 1254 may be guided through hinge 1210. In some examples, electronic circuit components 1254 may be guided through insert 1256, along the inner side of curved arm 1250 and into distal portion 1208 through an opening between curved arm 1250 and flange portion 1240. In some embodiments, a conductive cable or flexible member may be attached to one or more components of hinge 1210, including but not limited to curved arm 1250 and insert 1256. In some examples, the conductive cable or flexible member may be attached via TSA or pressure sensitive adhesive. The internal geometry of hinge 1210 may affect the length of the route occupied by the conductive cable, flexible member or other component. For example, the length required for the conductive cable, flexible member or other electronic component to pass through hinge 1210 may be shorter when hinge 1210 is in an open position, and may be longer when hinge 1210 is in a closed position. The length difference may range from 0 mm to 2 mm, 2 mm to 4 mm, 4 mm to 6 mm, or more.

[0097] Fig.12 Any of the features, components, and / or parts shown (including arrangements and configurations thereof) may be included, alone or in any combination, in any other examples of devices, features, components, and parts shown in other figures described herein. Likewise, any of the features, components, and / or parts shown or described with reference to other figures (including arrangements and configurations thereof) may be included, alone or in any combination, in any other examples of devices, features, components, and parts shown in other figures described herein. Fig.12 The following sections describe the examples of devices, features, components, and parts shown. Fig.11 Another example of the inner workings, components and accessories of the hinge described.

[0098] Fig.13A cross-sectional view of another example hinge 1310 of a head mountable device in a first state is shown, the hinge including a proximal portion 1306 and a distal portion 1308. The proximal portion 1306 may include a protrusion 1348 defining one side of the proximal portion 1306. The distal portion 1308 may include a bending arm 1350 and a handle 1368. In some embodiments, the handle 1368 may be attached to a cam 1370. The proximal portion 1306 may include one or more torsion springs 1318, each of which has a pair of legs 1372. In different embodiments, the legs 1372 may be at different angles relative to each other. For example, the legs 1372 may be at an angle of about 90 degrees, about 180 degrees, about 270 degrees, about 360 degrees, or any other angle not mentioned herein. The proximal portion 1306 may also include a translation arm 1374. In some embodiments, the translation arm 1374 may include a snap 1376. The catch 1376 may be configured to receive one or more legs 1372 of one or more torsion springs 1318 .

[0099] In some examples, when transitioning from the open position to the folded position or vice versa, the handle 1368 rotates the cam 1370. The cam 1370 may be connected to the translation arm 1374 so that the cam 1370 can be rotated without displacing the translation arm 1374. This can be achieved via a common pin or other attachment method. When in the open or folded state, one or more torsion springs can apply little to no force on the cam 1370, thereby facilitating two stable positions. In the transition position between the open state and the folded state, the cam 1370 can displace one or more legs 1372 of the one or more torsion springs 1318. In some embodiments, the one or more legs 1372 that are displaced can be those legs that are closer to the distal portion 1308. This can generate a force that biases the hinge 1310 toward one of the open position or the folded position, thereby generating a bistable hinge.

[0100] In the deployed position, the handle 1368 can displace the cam 1370 and the translation arm 1374 away from the proximal portion 1306 on a curve defined by the translation arm 1374. In some embodiments, the translation arm 1374 can in turn displace one or more legs 1372 of one or more torsion springs 1318, thereby biasing the hinge 1310 toward the open position. In this way, the deployment functionality and bistable nature of the hinge 1310 can be achieved by the one or more torsion springs 1318. The geometry of the cam 1370 and the translation arm 1374 can create a virtual pivot point about which the distal portion 1308 rotates when entering or leaving the deployed position. This can maintain a constant gap between the corners of the proximal portion 1306 and the distal portion 1308, as described above with respect to Fig. 6AAs discussed. Using one spring or a group of springs 1318 to achieve multiple functionalities can reduce the overall size of the hinge 1310, thereby allowing a smaller housing or increased space for electrical components. Reducing the number of parts to achieve multiple functionalities can also simplify and shorten manufacturing, thereby reducing costs.

[0101] Fig.13 Any of the features, components, and / or parts shown (including arrangements and configurations thereof) may be included, alone or in any combination, in any other examples of devices, features, components, and parts shown in other figures described herein. Likewise, any of the features, components, and / or parts shown or described with reference to other figures (including arrangements and configurations thereof) may be included, alone or in any combination, in any other examples of devices, features, components, and parts shown in other figures described herein. Fig.13 Examples of devices, features, components, and parts are shown. The following description discusses example springs, including springs that can be preloaded to achieve a smoother or reduced form factor.

[0102] Fig.14 Schematic diagrams of example springs under preload and hinge assembly load according to one or more examples of the present disclosure are shown. In these or other examples, the spring may include a variety of different types of springs. In some examples, the spring may include a metal leaf spring. Additionally or alternatively, the spring may include a sheet of another material (such as a plastic, an elastomer, a composite material, etc.). In a particular implementation, the spring may include a combination of materials (e.g., to provide a particular combination of material properties). In other examples, the spring may include a leaf spring, a compression spring, an extension spring, a coil spring, a machined spring, a disc spring, a torsion spring, a variable speed spring, a serpentine spring, etc.

[0103] As depicted, spring 1400a (having a sheet form factor) can be cantilevered from location 1406, and preload 1402 is applied at an opposite end portion of the spring opposite location 1406. In some examples, preload 1402 can include a predetermined preload. In certain examples, preload 1402 depends on the induced curvature or bending of spring 1400a relative to horizontal reference plane 1404. For example, in at least some examples, preload 1402 corresponds to a specific curvature of spring 1400a that follows a predetermined equation. In certain examples, preload 1402 corresponds to a specific curvature of spring 1400a according to the following example expression or straight line equation:

[0104]

[0105] Wherein the term y refers to the y coordinate value of the spring curvature line perpendicular to the horizontal reference plane 1404; the term x refers to the x value of the spring curvature line; the term l refers to the length of the spring from position 1406 to the opposite end of the spring 1400a; the term E refers to the elastic modulus of the spring 1400a; and the term I refers to the area moment of inertia of the cross-section of the spring 1400a.

[0106] In some examples, the preload 1402 provides a continuous curvature extending across the spring 1400a. In some examples, the preload 1402 can provide a linear portion (e.g., a straight portion without curvature) along the spring 1400a. Additionally or alternatively, the preload 1402 can be based on cantilever beam bending calculations, stress-strain mapping (e.g., numerical simulations such as finite element analysis), etc.

[0107] In these or other examples, spring 1400a may be bent, formed, or otherwise plastically deformed such that spring 1400a maintains a predetermined curvature after preload 1402 is removed. Thus, when spring 1400a transitions to an assembled state as shown in spring 1400b, spring 1400b may include another predetermined shape or form factor. For example, hinge assembly 1408 may apply assembly load 1410 on spring 1400b. Assembly load 1410 is generally in a direction opposite to preload 1402. That is, when assembled in conjunction with hinge assembly 1408, spring 1400b may be biased in a direction opposite to preload 1402. In some examples, spring 1400b may be biased from assembly load 1410 to be shaped or aligned with one or more portions of hinge assembly 1408. For example, spring 1400b may be made flat or parallel to hinge assembly 1408 and / or horizontal reference plane 1404. In some examples, the spring 1400b does not include a ridge or non-flat portion as an artifact of the curvature from the preload. Therefore, the spring 1400b can include an elongated profile to improve the efficiency of space usage (while also avoiding interference / tolerance issues).

[0108] Fig.14 Any of the features, components and / or parts shown (including arrangements and configurations thereof) may be included alone or in any combination in any other examples of devices, features, components and parts shown in other figures described herein. Similarly, any of the features, components and / or parts shown or described with reference to other figures (including arrangements and configurations thereof) may be included alone or in any combination in any other examples of devices, features, components and parts shown in other figures described herein. Fig.14 Examples of devices, features, components, and parts are shown.

[0109] To the extent applicable to the present technology, the collection and use of data obtained from various sources may be used to improve the delivery of inspirational content or any other content that may be of interest to the user. The present disclosure contemplates that in some instances, the collected data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data may include demographic data, location-based data, phone numbers, email addresses, ID, home address, data or records related to the user's health or fitness level (e.g., vital sign measurements, medication information, exercise information), date of birth, or any other identifying or personal information.

[0110] The present disclosure recognizes that the use of such personal information data in the present technology can be used to benefit users. For example, the personal information data can be used to deliver targeted content that users are more interested in. Therefore, the use of such personal information data enables users to have planned control over the content delivered. In addition, the present disclosure also anticipates other uses of personal information data that benefit users. For example, health and fitness data can be used to provide insights into the user's overall health status, or can be used as positive feedback to individuals who use technology to pursue health goals.

[0111] The disclosure anticipates that entities responsible for the collection, analysis, disclosure, transmission, storage or other uses of such personal information data will comply with sound privacy policies and / or privacy practices. Specifically, such entities should implement and adhere to the use of privacy policies and privacy practices that are recognized as meeting or exceeding industry or government requirements for maintaining the privacy and security of personal information data. Such policies should be easy for users to access and should be updated as changes in the collection and / or use of data occur. Personal information from users should be collected for legal and reasonable entity purposes and should not be shared or sold outside these legal purposes. In addition, such collection / sharing should be carried out after receiving the user's informed consent. In addition, such entities should consider taking any necessary steps to protect and safeguard access to such personal information data, and ensure that other entities with access to personal information data comply with the privacy policies and procedures of other entities. In addition, such entities can subject themselves to third-party assessments to prove that they comply with widely accepted privacy policies and privacy practices. In addition, policies and practices should be adapted to specific types of personal information data collected and / or accessed, and to applicable laws and standards including considerations of special jurisdictions. For example, in the United States, the collection or acquisition of certain health data may be governed by federal and / or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); while health data in other countries may be subject to other regulations and policies and should be handled accordingly. Therefore, different privacy practices should be advocated for different types of personal data in each country.

[0112] Regardless of the foregoing, the present disclosure also contemplates implementation schemes in which users selectively block the use or access of personal information data. That is, the present disclosure contemplates that hardware elements and / or software elements may be provided to prevent or block access to such personal information data. For example, with respect to an advertising delivery service, the technology of the present invention may be configured to allow a user to choose to "opt in" or "opt out" at any time during or after registration for the service to participate in the collection of personal information data. In another example, a user may choose not to provide emotion-related data for a target content delivery service. In another example, a user may choose to limit the length of time that emotion-related data is retained, or to completely prohibit the development of basic emotional conditions. In addition to providing "opt-in" and "opt-out" options, the present disclosure also contemplates providing notifications related to access or use of personal information. For example, a user may be notified that the user's personal information data will be accessed when downloading an application, and then the user may be reminded again just before the personal information data is accessed by the application.

[0113] In addition, it is the intention of the present disclosure that personal information data should be managed and processed in a manner that minimizes the risk of unintentional or unauthorized access or use. Once the data is no longer needed, the risk can be minimized by limiting the collection of data and deleting the data. In addition, and when applicable, including in certain health-related applications, data de-identification can be used to protect the privacy of users. De-identification can be facilitated by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of stored data (e.g., collecting location data at the city level rather than at the address level), controlling how the data is stored (e.g., aggregating data between users), and / or other methods when appropriate.

[0114] Thus, while the present disclosure broadly covers the use of personal information data to implement one or more of the various disclosed embodiments, the present disclosure also contemplates that various embodiments may also be implemented without requiring access to such personal information data. That is, various embodiments of the present technology will not fail to function properly due to the lack of all or a portion of such personal information data. For example, content may be selected and delivered to a user by inferring preferences based on non-personal information data or an absolute minimum amount of personal information, such as content requested by a device associated with the user, other non-personal information available to a content delivery service, or publicly available information.

[0115] For the purpose of illustration, the foregoing description uses specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that specific details are not required in order to practice the embodiments. Therefore, for the purpose of illustration and description, the foregoing description of the specific embodiments described herein is presented. They are not intended to be exhaustive or to limit the embodiments to the disclosed precise forms. It will be apparent to those of ordinary skill in the art that, in view of the above teachings, many modifications and variations are feasible.

Claims

1. A head-mounted electronic device, comprising: frame; a display window, the display window being fixed to the frame; arm; a bistable hinge connecting the arm to the frame, the bistable hinge and the arm including an open position, a folded position, and a deployed position; a first electronic component, the first electronic component being positionally fixed between the display window and the bistable hinge; a second electronic component positioned distally from the bistable hinge; and A cable connects the first electronic component and the second electronic component through the bistable hinge.

2. The head-mountable electronic device of claim 1, wherein the bistable hinge comprises a 4-bar linkage. 3 . The head-mountable electronic device of claim 1 , wherein the bistable hinge comprises a first pivot point and a second pivot point.

4. The head-mountable electronic device of claim 1 , wherein the bistable hinge comprises a cover that conceals components of the bistable hinge during rotation of the arm from the open position to the folded position. The head-mountable electronic device according to claim 1 , wherein the first electronic component comprises a projector.

6. The head-mountable electronic device of claim 5, wherein the arm further defines a lateral protrusion, the projector being disposed within the lateral protrusion. 7 . The head-mountable electronic device according to claim 1 , wherein the second electronic component comprises at least one of a battery or a printed circuit board.

8. A hinge assembly for electronic glasses, the hinge assembly comprising: a distal end portion, the distal end portion being connectable to the arm; a proximal end portion, the proximal end portion being connectable to the frame; a first pivot point positioned within the hinge assembly between the distal end and the proximal end, the first pivot point having a first rotational direction; and A second pivot point is positioned outside of the hinge assembly, the second pivot point having a second rotational direction opposite the first rotational direction.

9. The hinge assembly of claim 8, wherein the first rotational direction corresponds to a folding direction.

10. The hinge assembly of claim 8, wherein the second rotational direction corresponds to an unfolded direction.

11. The hinge assembly of claim 8, wherein the second pivot point is a virtual pivot point formed at an outer gap opening defined by the frame and outer surfaces of the arm.

12. The hinge assembly of claim 11, wherein the outer gap opening maintains a constant size during rotation of the hinge assembly in the second rotational direction.

13. A wearable device comprising: shell; an observation window fixed to the housing; a foldable arm connected to the housing; and a joint portion connecting the foldable arm and the housing, the joint portion comprising: a spring, the spring being axially positioned with the foldable arm; a connecting rod, the connecting rod comprising a first end and a second end, the first end being connected to the spring; a rotating link including a third end and a fourth end, the third end including a pivot point for the rotating link and the fourth end connected to the second end; and A follower is in contact with the rotating rod.

14. The wearable device of claim 13, further comprising a cable guided through the joint.

15. The wearable device of claim 14, wherein the cable is guided through the connecting rod.

16. The wearable device of claim 13, wherein: The foldable arm is movable between 80 and 100 degrees in a first direction; and The foldable arm is movable between 5 and 15 degrees in a second direction opposite the first direction.

17. The wearable device of claim 13, wherein: The spring is compressed during a first portion of a folding cycle of the foldable arm; and The spring decompresses during a second portion of the folding cycle.

18. The wearable device of claim 13, wherein the first end of the connecting rod comprises a hook attachable to the spring.

19. The wearable device of claim 13, wherein an interior portion of at least one of the housing or the foldable arm is exposed prior to connecting the first end of the connecting rod to the spring.

20. The wearable device of claim 13, wherein the follower is capable of translating along a surface of the rotating rod between the third end and the fourth end.

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