Rotating shaft mechanism and head-mounted device

Abstract

The present invention discloses a hinge mechanism and a head-mounted device, wherein the hinge mechanism is used for the head-mounted device, the head-mounted device comprising a first component and a second component, the hinge mechanism comprising: a main shaft, the main shaft being connected to the first component; a rotating buckle, the rotating buckle being connected to the second component, the rotating buckle being rotatably connected to the main shaft; and an energy conversion element disposed between the rotating buckle and the main shaft, the energy conversion element being configured to convert mechanical energy generated during the rotation of the rotating buckle relative to the main shaft into electrical energy and transmit the energy to an energy storage unit. The technical solution of the present invention can collect and utilize the mechanical energy generated during the rotation of the hinge mechanism, thereby avoiding energy waste.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent electronic devices, and in particular to a rotating shaft mechanism and a head-mounted device. Background Art

[0002] Head-mounted devices (such as smart glasses and VR headsets) often involve a rotational connection between two components, and a hinge mechanism is the primary structure that enables this connection. The hinge mechanism generates mechanical energy (such as mechanical vibration energy) during rotation, but this energy is typically dissipated directly, resulting in energy waste. Summary of the Invention

[0003] The main purpose of the present invention is to provide a rotating shaft mechanism, which aims to collect and utilize the mechanical energy generated during the rotation of the rotating shaft mechanism to avoid energy waste.

[0004] To achieve the above-mentioned object, the present invention provides a hinge mechanism for a head-mounted device, wherein the head-mounted device includes a first component and a second component, and the hinge mechanism includes:

[0005] a main shaft, the main shaft being used to connect with the first component;

[0006] a rotating buckle, the rotating buckle being used to connect with the second component, the rotating buckle being rotatably connected to the main shaft; and

[0007] An energy conversion component is provided between the rotating buckle and the main shaft, and is used for converting mechanical energy generated during the rotation of the rotating buckle relative to the main shaft into electrical energy and transmitting the electrical energy to the energy storage unit.

[0008] In one embodiment, the rotating shaft mechanism also includes an elastic self-locking component arranged between the main shaft and the rotating buckle, and the elastic self-locking component has a first state and a second state. In the first state, the elastic self-locking component is locked with the main shaft to limit the rotation of the rotating buckle. In the second state, the elastic self-locking component is separated from the main shaft to release the rotation restriction of the rotating buckle; when the rotating buckle is rotated by an external force, the elastic self-locking component can be switched from the first state to the second state, and drive the elastic self-locking component to rotate around the main shaft.

[0009] In one embodiment, the main shaft includes a first shaft body and a second shaft body connected along the axial direction, the rotating buckle includes a ring body, the ring body includes a first ring body and a second ring body connected along the axial direction, the first ring body is sleeved on the outer circumference of the first shaft body, and the second ring body is spaced around the outer circumference of the second shaft body, the energy conversion part and the elastic self-locking component are both arranged between the second ring body and the second shaft body, and during the process of the elastic self-locking component switching from the first state to the second state, the energy conversion part can be squeezed and deformed to convert mechanical energy into electrical energy.

[0010] In one embodiment, the outer circumferential surface of the second shaft body is provided with a plurality of first locking portions along the circumferential direction, the elastic self-locking assembly includes a locking member and an elastic member, the locking member is arranged in an arc shape and is arranged around the outer circumference of the second shaft body, the inner circumferential surface of the locking member is provided with a plurality of second locking portions along the circumferential direction, the elastic member is arranged between the inner circumferential surface of the second ring body and the outer circumferential surface of the locking member, and the inner circumferential surface of the second ring body is provided with protrusions at both ends corresponding to the locking member; in the first state, the second locking portion is locked with the first locking portion; in the second state, the second locking portion is separated from the first locking portion.

[0011] In one embodiment, the locking member is provided in a hollow structure, the energy conversion member is provided in the cavity of the locking member, and the energy conversion member can be squeezed and deformed as the locking member is deformed.

[0012] In one embodiment, the energy conversion element is a flexible piezoelectric film.

[0013] In one embodiment, the elastic member includes a first elastic piece and a second elastic piece that are arranged relative to and spaced apart from each other, and a connecting elastic piece connected between the first elastic piece and the second elastic piece. The first elastic piece and the second elastic piece are both arranged in an arc shape. The first elastic piece is arranged to fit the outer peripheral surface of the locking member, and the second elastic piece is arranged to fit the inner peripheral surface of the second ring body.

[0014] In one embodiment, two arc-shaped cavities are defined between the second ring body and the second shaft body, and the elastic self-locking component and the energy conversion component are disposed in each of the arc-shaped cavities.

[0015] In one embodiment, the main shaft also includes a third shaft body, which is arranged to protrude from the end of the second shaft body away from the first shaft body, and the third shaft body is used to connect with the first component; and / or, the rotating buckle also includes a claw arranged on the outside of the ring body, and the claw is used to connect with the second component.

[0016] In one embodiment, the rotating shaft mechanism further includes a baffle, which covers an end of the second ring body away from the first ring body, and the baffle is provided with a through hole for the third shaft body to pass through.

[0017] In one embodiment, the two ends of the first shaft are respectively connected to the second shaft, and two rotating buckles are provided along the axial direction of the main shaft. The first ring bodies of the two rotating buckles are both sleeved on the outer periphery of the first shaft, and the second ring bodies of the two rotating buckles are arranged in a one-to-one correspondence with the two second shafts, and the elastic self-locking component and the energy conversion part are provided between each second ring body and the corresponding second shaft.

[0018] The present invention further provides a head-mounted device, comprising:

[0019] first component;

[0020] Second component;

[0021] energy storage units; and

[0022] In the rotating shaft mechanism as described above, the main shaft is connected to the first component, the rotating buckle is connected to the second component, and the energy conversion component is electrically connected to the energy storage unit. The energy conversion component is used to convert the mechanical energy generated during the rotation of the rotating buckle relative to the main shaft into electrical energy and transmit it to the energy storage unit for storage.

[0023] In one embodiment, the energy storage unit is electrically connected to the load element of the head-mounted device, and the connection circuit between the energy storage unit and the load element is provided with a rectification and filtering unit, which is used to transmit the electric energy output by the energy storage unit to the load element after rectification and filtering.

[0024] In one embodiment, the head-mounted device includes a wearing body and a display body, the wearing body is the first component, and the display body is the second component; the wearing body is provided with a mounting groove, the main shaft is fixed in the mounting groove, and the display body is connected to the rotating buckle.

[0025] The technical solution of the present invention is to install an energy conversion element between the main shaft and the rotating buckle. When the rotating buckle rotates relative to the main shaft, the energy conversion element can convert the mechanical energy generated by the rotating buckle relative to the main shaft into electrical energy and transmit it to the energy storage unit for storage. The energy storage unit can then power other load components. In this way, the mechanical energy generated during the rotation of the rotating shaft mechanism can be collected and utilized, avoiding energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the rotating shaft mechanism of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the rotating shaft mechanism;

[0029] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the rotating shaft mechanism;

[0030] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0031] Figure 5 for Figure 1 A schematic cross-sectional view of the rotating shaft mechanism in another state;

[0032] Figure 6 It is a structural schematic diagram of an embodiment of a main shaft of a rotating shaft mechanism;

[0033] Figure 7 It is a structural diagram of an embodiment of a rotating buckle of a rotating shaft mechanism;

[0034] Figure 8 A schematic structural diagram of an embodiment of an energy conversion component of a rotating shaft mechanism;

[0035] Figure 9 for Figure 8 Schematic diagram of energy conversion achieved by the energy conversion element being squeezed and deformed by external force;

[0036] Figure 10 Schematic diagram of the structure of a head mounted device according to an embodiment of the present invention.

[0037] Description of Figure Numbers:

[0038] Label name Label name 1000 Head-mounted devices 23 claws 100 Rotating shaft mechanism 30 Energy conversion components 200 First component 31 substrate layer 300 Second component 32 Piezoelectric layer 10 spindle 40 Elastic self-locking components 11 First axis 41 Locking parts 12 Second axis 411 Second locking portion 121 First locking portion 42 elastic parts 13 The third axis 421 First Shrapnel 20 Rotating buckle 422 Second shrapnel 21 Ring body 423 Connecting shrapnel 211 The first ring 50 bezel 212 Second ring 51 through-hole 22 convex part

[0039] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] The present invention provides a rotating shaft mechanism 100 .

[0044] Please refer to Figures 1 to 3 ,and Figure 10 In one embodiment of the present invention, the hinge mechanism 100 is used in a head-mounted device 1000. The head-mounted device 1000 includes a first component 200 and a second component 300. The hinge mechanism 100 includes a main shaft 10, a rotating buckle 20, and an energy conversion element 30. The main shaft 10 is connected to the first component 200; the rotating buckle 20 is connected to the second component 300, and the rotating buckle 20 and the main shaft 10 are rotatably connected. The energy conversion element 30 is disposed between the rotating buckle 20 and the main shaft 10. The energy conversion element 30 is used to convert the mechanical energy generated by the rotating buckle 20 rotating relative to the main shaft 10 into electrical energy and transmit it to the energy storage unit.

[0045] It should be noted that the hinge mechanism 100 can be used to rotatably connect the first component 200 and the second component 300 of a head-mounted device 1000. The head-mounted device 1000 includes, but is not limited to, smart glasses, VR headsets, and the like. For example, when the head-mounted device 1000 is a smart pair of glasses, the temples of the smart glasses can serve as the first component 200, and the frame can serve as the second component 300. When the head-mounted device 1000 is a VR headset, the wearable device of the VR headset can serve as the first component 200, and the display device can serve as the second component 300. The following description primarily uses the hinge mechanism 100 used in a VR headset as an example.

[0046] Specifically, the hinge mechanism 100 includes a main shaft 10 and a rotating buckle 20. The main shaft 10 can be fixed to the mounting groove of the first component 200 (e.g., the wearable body) by a fastener (e.g., a screw). The rotating buckle 20 can be rotatably mounted on the periphery of the main shaft 10. The rotating buckle 20 can include a claw 23 connected to the second component 300 (e.g., the display body), thereby achieving a rotational connection between the first component 200 and the second component 300. When a force in the rotational direction is applied to the rotating buckle 20, the second component 300 can be rotated relative to the first component 200 to adjust the second component 300 to a suitable position. The energy conversion component 30 is disposed between the rotating buckle 20 and the main shaft 10. The energy conversion component 30 is used to convert the mechanical energy generated during the rotation of the rotating buckle 20 relative to the main shaft 10 into electrical energy. There are various ways to achieve energy conversion through the energy conversion element 30. For example, the energy conversion element 30 can be made of piezoelectric material (e.g., flexible piezoelectric film, piezoelectric ceramic, etc.). When the rotating buckle 20 rotates relative to the main shaft 10, the energy conversion element 30 is squeezed to generate a positive piezoelectric effect, thereby converting mechanical vibration energy into electrical energy. The positive piezoelectric effect refers to the phenomenon that when a piezoelectric material is deformed by an external force in a certain direction, it will produce polarization within the material, and opposite positive and negative charges will appear on its two opposing surfaces. When the external force is removed, the material will return to a neutral state. This phenomenon is called the positive piezoelectric effect. Of course, the energy conversion element 30 can also achieve energy conversion through other methods. For example, the energy conversion element 30 can include a rotor that can rotate with the rotating buckle 20. When the rotating buckle 20 rotates, the rotor of the energy conversion element 30 rotates within a predetermined magnetic field to convert rotational mechanical energy into electrical energy. The energy conversion component 30 can be electrically connected to an external energy storage unit through a wire. The electric energy converted by the energy conversion component 30 is transmitted to the energy storage unit for storage, and then transmitted to other load elements through the energy storage unit to power other load elements (such as LED lights, speakers, etc.).

[0047] The technical solution of the present invention incorporates an energy conversion element 30 between the main shaft 10 and the rotating buckle 20. As the rotating buckle 20 rotates relative to the main shaft 10, the energy conversion element 30 converts the mechanical energy generated by the rotating buckle 20 into electrical energy, which is then transferred to an energy storage unit for storage. This energy storage unit can then power other load components. This allows the mechanical energy generated during the rotation of the rotating shaft mechanism 100 to be collected and utilized, avoiding energy waste.

[0048] In practical applications, it is often desirable to be able to adjust and lock the second component 300 relative to the first component 200 at any angle. For example, a VR headset uses computer technology to overlay real and virtual environments in the same space in real time. Current VR headsets adapt to different users by adjusting elastic straps that secure the head. However, due to the varying facial shapes of users, light leakage can occur around the VR headset, impacting the user experience.

[0049] In order to solve the above problems, Figure 3 As shown, in one embodiment, the rotating shaft mechanism 100 also includes an elastic self-locking component 40 arranged between the main shaft 10 and the rotating buckle 20. The elastic self-locking component 40 has a first state and a second state. In the first state, the elastic self-locking component 40 is locked with the main shaft 10 to limit the rotation of the rotating buckle 20. In the second state, the elastic self-locking component 40 is separated from the main shaft 10 to release the rotation restriction of the rotating buckle 20; when the rotating buckle 20 is rotated by an external force, the elastic self-locking component 40 can be switched from the first state to the second state, and drive the elastic self-locking component 40 to rotate around the main shaft 10.

[0050] In this embodiment, an elastic self-locking component 40 is provided between the main shaft 10 and the rotating buckle 20. In the natural state (that is, when the second component 300 is not subjected to external force), the elastic self-locking component 40 remains in the first state under the action of its own elastic force. At this time, the elastic self-locking component 40 is locked with the main shaft 10, thereby limiting the rotation of the rotating buckle 20, so that the rotating buckle 20 remains in a fixed position relative to the main shaft 10. When the second component 300 needs to be rotated and adjusted to a certain angle relative to the first component 200, it is only necessary to apply a force along the rotation direction to the rotating buckle 20. During the rotation of the rotating buckle 20, a force is applied to the elastic self-locking component 40, so that the elastic self-locking component 40 can overcome the elastic force and switch from the first state to the second state. At this time, the elastic self-locking component 40 is separated from the main shaft 10 to release the rotation restriction of the rotating buckle 20, so that the rotating buckle 20 can drive the elastic self-locking component 40 to rotate around the main shaft 10. When the rotating buckle 20 rotates to the preset rotation angle, stop applying external force. At this time, the elastic self-locking component 40 returns to the first state under the action of its own elastic force to limit the further rotation of the rotating buckle 20, so that the rotating buckle 20 can maintain the preset rotation angle relative to the main shaft 10, so that the angle of the second component 300 relative to the first component 200 can be flexibly adjusted. When the hinge mechanism 100 is applied to a VR head-mounted device, the elastic self-locking component 40 can enable the rotating buckle 20 to be rotated to any angle relative to the main shaft 10 and remain fixed, so that the display body (i.e., the second component 300) of the VR head-mounted device can be adjusted in angle relative to the wearing body (i.e., the first component 200) to adapt to users with different facial shapes, so that the four sides of the display body can better fit the user's face, thereby solving the light leakage problem and improving the user experience.

[0051] Please refer to Figure 3 and Figure 6 In one embodiment, the main shaft 10 includes a first shaft body 11 and a second shaft body 12 connected along the axial direction, the rotating buckle 20 includes a ring body 21, the ring body 21 includes a first ring body 211 and a second ring body 212 connected along the axial direction, the first ring body 211 is sleeved on the outer periphery of the first shaft body 11, and the second ring body 212 is spaced around the outer periphery of the second shaft body 12, the energy conversion component 30 and the elastic self-locking component 40 are both arranged between the second ring body 212 and the second shaft body 12, and in the process of the elastic self-locking component 40 switching from the first state to the second state, the energy conversion component 30 can be squeezed and deformed to convert mechanical energy into electrical energy.

[0052] In this embodiment, the first ring body 211 is sleeved around the periphery of the first shaft body 11 to achieve a rotational connection between the rotating buckle 20 and the main shaft 10, making assembly simple and convenient. The second ring body 212 is spaced around the periphery of the second shaft body 12, forming an installation space between the second ring body 212 and the second shaft body 12 for accommodating the energy conversion component 30 and the elastic self-locking assembly 40. To maximize the installation space, the outer diameter of the second shaft body 12 is smaller than the outer diameter of the first shaft body 11, and the inner diameter of the second ring body 212 is larger than the inner diameter of the first ring body 211. The energy conversion component 30 and the elastic self-locking assembly 40 are both disposed within this installation space. The energy conversion component 30 can specifically be made of piezoelectric material. When the rotating buckle 20 is rotated by an external force, it can apply a force to the elastic self-locking component 40. The elastic self-locking component 40 will be deformed in the process of switching from the first state to the second state, and then the energy conversion component 30 will be squeezed and deformed through the deformation of the elastic self-locking component 40. After the energy conversion component 30 is squeezed and deformed, the mechanical vibration energy generated during the rotation of the rotating shaft mechanism 100 can be converted into electrical energy through the positive piezoelectric effect. The overall structure is compact and occupies little space.

[0053] Please refer to Figure 5 and Figure 6 In one embodiment, the outer circumferential surface of the second shaft body 12 is provided with a plurality of first locking portions 121 along the circumferential direction, and the elastic self-locking assembly 40 includes a locking member 41 and an elastic member 42. The locking member 41 is arranged in an arc shape and is arranged around the outer circumference of the second shaft body 12. The inner circumferential surface of the locking member 41 is provided with a plurality of second locking portions 411 along the circumferential direction. The elastic member 42 is arranged between the inner circumferential surface of the second ring body 212 and the outer circumferential surface of the locking member 41. The inner circumferential surface of the second ring body 212 is provided with protrusions 22 at both ends corresponding to the locking member 41; in the first state, the second locking portion 411 is locked with the first locking portion 121; in the second state, the second locking portion 411 is separated from the first locking portion 121.

[0054] In this embodiment, the second shaft 12 can be specifically set as a gear structure, and the teeth provided on the outer periphery of the gear are the first locking portion 121. The locking member 41 can be specifically set as an arc-shaped gear ring structure, and the teeth provided on the inner periphery of the gear ring are the second locking portion 411. Of course, in other embodiments, the first locking portion 121 and the second locking portion 411 can also be set to other structures that can achieve locking and separation. The elastic member 42 is provided between the second ring body 212 and the locking member 41 and can produce elastic deformation between the second ring body 212 and the locking member 41, so that the locking member 41 has a certain movable stroke. Among them, the elastic member 42 includes but is not limited to the use of a spring, a spring sheet or other elastic structure. It can be understood that the locking member 41 is set in an arc shape with a notch and has a certain elasticity, and can produce contraction deformation when squeezed by external force. The inner circumference of the second ring body 212 is provided with protrusions 22 at both ends corresponding to the locking member 41. As shown Figure 5 As shown, when a user applies a rotational force to the rotating buckle 20, the protrusion 22 inside the rotating buckle 20 squeezes the locking member 41. The locking member 41 contracts and arches inward under the pressure. Under the force of the locking member 41, the elastic member 42 is compressed and deformed toward the side away from the second shaft 12, causing the second locking portion 411 of the locking member 41 to separate from the first locking portion 121 of the second shaft 12 (e.g., the ring gear and the gear are separated). Driven by the rotating buckle 20, the locking member 41 moves circumferentially around the second shaft 12, thereby allowing the second component 300 (e.g., the display body) to be freely adjusted upward or downward relative to the first component 200 (e.g., the wearer body). After adjustment is completed, the protrusion 22 inside the rotating buckle 20 locks the angle, and the elastic member 42 recovers its deformation and drives the locking member 41 to return to its original position. The second locking portion 411 of the locking member 41 is locked with the first locking portion 121 of the second shaft 12 (e.g., the ring gear and the gear are meshed), achieving self-locking. In this way, the user can arbitrarily adjust and lock the rotation angle of the second component 300 (such as the display body) by manually adjusting the rotation buckle 20.

[0055] Furthermore, if Figure 4 As shown, the locking member 41 is provided with a hollow structure, and the energy conversion member 30 is provided in the cavity of the locking member 41. The energy conversion member 30 can be squeezed and deformed as the locking member 41 is deformed. In this embodiment, by providing the locking member 41 with a hollow structure, the installation and fixation of the energy conversion member 30 can be facilitated. When the elastic self-locking component 40 switches from the first state to the second state, the locking member 41 is squeezed and arched and deformed toward the side away from the second shaft 12. At the same time, the energy conversion member 30 inside the locking member 41 can also be squeezed and deformed, so that the mechanical vibration energy generated during the rotation of the rotating shaft mechanism 100 can be converted into electrical energy through the positive piezoelectric effect. The overall structure is compact and occupies a small space.

[0056] In order to further reduce the occupied space, the energy conversion element 30 adopts a flexible piezoelectric film. Figure 8 and Figure 9As shown, the flexible piezoelectric film includes a substrate layer 31 and a piezoelectric layer 32, and the substrate layer 31 and the piezoelectric layer 32 are bonded together by conductive glue. During assembly, the substrate layer 31 of the flexible piezoelectric film can be fixed in the cavity of the locking member 41 by bonding (for example, fixing with double-sided tape). When the rotating buckle 20 is adjusted, the locking member 41 is forced to arch up, and the flexible piezoelectric film is deformed by the force, so that the substrate layer 31 and the piezoelectric layer 32 respectively accumulate charges of different polarities, thereby generating electricity using the positive piezoelectric effect. When the rotating buckle 20 stops rotating, the locking member 41 is reset, the deformation of the flexible piezoelectric film disappears, and with the arbitrary adjustment of the rotating shaft mechanism 100, the flexible piezoelectric film undergoes repeated deformation, generating continuous and stable electrical energy. When applied to the head-mounted device 1000, the electrode surface of the flexible piezoelectric film can be connected to the energy storage unit through a wire to transmit the converted electrical energy to the energy storage unit for storage. The energy storage unit can provide the rectified and filtered electric energy to the load element (such as the LED light of the display body or other small load elements), thereby realizing the collection and utilization of electric energy.

[0057] There are many specific structures of the elastic member 42, such as Figure 2 and Figure 4 As shown, in one embodiment, the elastic member 42 includes a first elastic piece 421 and a second elastic piece 422 disposed opposite and spaced apart from each other, and a connecting elastic piece 423 connected between the first elastic piece 421 and the second elastic piece 422. The first elastic piece 421 and the second elastic piece 422 are both arcuately shaped, with the first elastic piece 421 being disposed in contact with the outer circumference of the locking member 41, and the second elastic piece 422 being disposed in contact with the inner circumference of the second ring body 212. In this embodiment, the cross-section of the elastic member 42 is generally U-shaped, and the cavity between the second elastic piece 422 and the first elastic piece 421 defines a movable travel S. The arcuate shape of the first elastic piece 421 and the second elastic piece 422 allows for a good fit with the shapes of the locking member 41 and the second ring body 212, enabling the elastic member 42 to be stably mounted between the locking member 41 and the second ring body 212, thereby providing a stable elastic force.

[0058] In order to further improve the energy conversion efficiency and self-locking reliability, such as Figure 5 As shown in one embodiment, two arc-shaped cavities are defined between the second ring body 212 and the second shaft body 12, and an elastic self-locking component 40 and an energy conversion component 30 are disposed in each arc-shaped cavity. Figure 5As shown, arc-shaped cavities are formed on the upper and lower sides of the second shaft 12, and an elastic self-locking component 40 and an energy conversion component 30 are respectively provided in the two arc-shaped cavities. The specific structures of the elastic self-locking component 40 and the energy conversion component 30 can be referred to the above embodiment and will not be repeated here. When the rotating buckle 20 rotates, the energy conversion components 30 located in the two arc-shaped cavities can be squeezed and deformed to convert the mechanical vibration energy during the rotation process into electrical energy, which can improve the energy conversion efficiency. When the rotating buckle 20 stops rotating, the elastic self-locking components 40 located in the two arc-shaped cavities can be locked and matched with the second shaft 12, thereby further improving the self-locking reliability.

[0059] In order to facilitate the connection between the main shaft 10 and the first component 200, as shown in FIG. Figure 6 As shown, in one embodiment, the main shaft 10 further includes a third shaft 13, which is provided protruding from the end of the second shaft 12 away from the first shaft 11 and is used to connect to the first component 200. The third shaft 13 can be integrally formed with the end of the second shaft 12 away from the first shaft 11, that is, during manufacturing, the first shaft 11, the second shaft 12, and the third shaft 13 are integrally formed. Alternatively, in some embodiments, the first shaft 11 and the second shaft 12 can be integrally formed to form a main shaft body, with a central hole extending through both ends of the main shaft body. A central shaft is inserted into the central hole, and the central shaft and the main shaft body can be keyed to achieve rotational restriction. One end of the central shaft extends through the second shaft 12 to form the third shaft 13. In a VR headset, a mounting slot can be provided at the center of the front side of the wearable body, the main shaft 10 can be placed in the mounting slot, and the third shaft 13 can be fixed to the inner wall of the mounting slot via fasteners.

[0060] In order to facilitate the connection between the rotating buckle 20 and the second component 300, as shown in FIG. Figure 7 As shown, in one embodiment, the rotating buckle 20 further includes a claw 23 provided on the outer side of the ring body 21, and the claw 23 is used to connect with the second component 300. Specifically, the claw 23 can be connected and fixed to the second component 300 (such as the display body) by a snap connection or a fastener connection.

[0061] like Figure 2 and Figure 3As shown, in one embodiment, the rotating shaft mechanism 100 further includes a baffle 50, which covers the end of the second ring body 212 away from the first ring body 211. The baffle 50 is provided with a through hole 51 for the third shaft body 13 to pass through. During assembly, the first ring body 211 of the rotating buckle 20 is sleeved on the outer periphery of the first shaft body 11 of the main shaft 10, and an installation space is formed between the second ring body 212 and the second shaft body 12. After the elastic self-locking assembly 40 and the energy conversion component 30 are assembled into the installation space, the baffle 50 is then covered on the end of the second ring body 212 away from the first ring body 211. The third shaft body 13 of the main shaft 10 passes through the through hole 51 of the baffle 50 to connect with the first component 200. The baffle 50 can realize the stacking limit of the components and the installation and fixation of the main shaft 10, making assembly simple and convenient.

[0062] Please refer to Figures 1 to 3 On the basis of the above embodiments, in one embodiment, the two ends of the first shaft body 11 are respectively connected to the second shaft body 12, and two rotating buckles 20 are provided along the axial direction of the main shaft 10. The first ring bodies 211 of the two rotating buckles 20 are both sleeved on the outer periphery of the first shaft body 11, and the second ring bodies 212 of the two rotating buckles 20 are arranged in a one-to-one correspondence with the two second shaft bodies 12. An elastic self-locking component 40 and an energy conversion part 30 are provided between each second ring body 212 and the corresponding second shaft body 12.

[0063] In this embodiment, the main shaft 10 is arranged in a symmetrical structure. Second shafts 12 are symmetrically provided at both ends of the first shaft 11. Third shafts 13 may be provided on the end surfaces of the main shaft 10 corresponding to each second shaft 12. The two third shafts 13 are respectively connected to the first component 200. Two rotating buckles 20 are respectively rotatably mounted on the first shaft 11. By simultaneously connecting the two rotating buckles 20 to the second component 300, the connection reliability of the second component 300 can be further improved. Of course, in some embodiments, the two rotating buckles 20 can also be combined into a single component. An elastic self-locking component 40 and an energy conversion element 30 are provided between the second ring 212 of each rotating buckle 20 and the corresponding second shaft 12 to further improve energy conversion efficiency and self-locking reliability. The specific structures of the elastic self-locking component 40 and the energy conversion element 30 can be referred to the above embodiment and will not be repeated here.

[0064] Please refer to Figure 10The present invention also provides a head-mounted device 1000, which includes a first component 200, a second component 300, an energy storage unit, and a hinge mechanism 100. The main shaft 10 is connected to the first component 200, the rotating buckle 20 is connected to the second component 300, and the energy conversion element 30 is electrically connected to the energy storage unit. The energy conversion element 30 is used to convert the mechanical energy generated during the rotation of the rotating buckle 20 relative to the main shaft 10 into electrical energy and transmit it to the energy storage unit for storage. The specific structure of the hinge mechanism 100 is referenced from the above-mentioned embodiments. Since the present head-mounted device 1000 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and will not be detailed here.

[0065] The technical solution of the present invention can realize the rotational connection between the first component 200 and the second component 300 through the rotating shaft mechanism 100, and an energy conversion component 30 is provided between the main shaft 10 of the rotating mechanism and the rotating buckle 20. When the rotating buckle 20 rotates relative to the main shaft 10, the energy conversion component 30 can convert the mechanical energy generated during the rotation of the rotating buckle 20 relative to the main shaft 10 into electrical energy and transmit it to the energy storage unit for storage. In this way, the mechanical energy generated during the rotation of the rotating shaft mechanism 100 can be collected to avoid energy waste.

[0066] In one embodiment, the energy storage unit is electrically connected to the load element of the head-mounted device 1000. The connection circuit between the energy storage unit and the load element is provided with a rectifier and filter unit, which is used to transmit the electrical energy output by the energy storage unit to the load element after rectification and filtering. In this way, the rectified and filtered electrical energy can directly power the load element, thereby improving the endurance of the load element. The load element is generally a small load with low power consumption, such as an LED lamp or other component.

[0067] like Figure 10As shown, in one embodiment, the head-mounted device 1000 is a VR head-mounted device, and the head-mounted device 1000 includes a wearing body and a display body, the wearing body is a first component 200, and the display body is a second component 300. The wearing body is provided with a mounting groove, the main shaft 10 is fixed in the mounting groove, and the display body is connected to the rotating buckle 20. Specifically, in the VR head-mounted device, a mounting groove can be opened in the middle position of the front side of the wearing body, the main shaft 10 of the rotating shaft mechanism 100 is fixed in the mounting groove, and the rotating buckle 20 of the rotating shaft mechanism 100 is connected and fixed to the display body. For example, the rotating buckle 20 can be clamped with the display body by a claw 23 or fixed with a screw, thereby realizing a rotatable connection between the display body and the wearing body. When the display body rotates relative to the wearing body, the energy conversion member 30 of the rotating shaft mechanism 100 can convert mechanical energy into electrical energy. In some embodiments, the hinge mechanism 100 also includes an elastic self-locking component 40, through which the display body can be adjusted and locked at any angle relative to the wearing body to adapt to users with different facial shapes, so that the four sides of the display body can better fit the user's face, thereby solving the light leakage problem and improving the user experience.

[0068] Of course, in some embodiments, the head-mounted device includes a frame and temples, the frame being the first component 200, and the temples being the second component 300; the frame is connected to the main shaft 10, and the temples are connected to the rotating buckle 20. Thus, when the temples rotate relative to the frame, they can drive the rotating buckle 20 to rotate relative to the main shaft 10, and then the energy conversion element 30 can convert mechanical energy into electrical energy.

[0069] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hinge mechanism for a head-mounted device, the head-mounted device comprising a first component and a second component, characterized in that: The rotating shaft mechanism comprises: a main shaft, the main shaft being used to connect with the first component; a rotating buckle, the rotating buckle being used to connect with the second component, the rotating buckle being rotatably connected to the main shaft; and An energy conversion component is arranged between the rotating buckle and the main shaft. The energy conversion component is made of piezoelectric material. The rotating shaft mechanism also includes an elastic self-locking component arranged between the main shaft and the rotating buckle. The elastic self-locking component has a first state and a second state. When the rotating buckle is rotated by an external force, a force can be applied to the elastic self-locking component. The elastic self-locking component is deformed in the process of switching from the first state to the second state, and can cause the energy conversion component to be squeezed and deformed. The energy conversion component is used to convert the mechanical energy generated during the rotation of the rotating buckle relative to the main shaft into electrical energy through the positive piezoelectric effect after being squeezed and deformed, and transmit it to the energy storage unit.

2. The rotating shaft mechanism according to claim 1, wherein: In the first state, the elastic self-locking component is locked with the main shaft to limit the rotation of the rotating buckle. In the second state, the elastic self-locking component is separated from the main shaft to release the rotation restriction of the rotating buckle. When the rotating buckle is rotated by an external force, the elastic self-locking component can be switched from the first state to the second state, and drive the elastic self-locking component to rotate around the main shaft.

3. The rotating shaft mechanism according to claim 2, wherein: The main shaft includes a first shaft body and a second shaft body connected along the axial direction, the rotating buckle includes a ring body, the ring body includes a first ring body and a second ring body connected along the axial direction, the first ring body is sleeved on the outer circumference of the first shaft body, the second ring body is spaced around the outer circumference of the second shaft body, and the energy conversion part and the elastic self-locking component are both arranged between the second ring body and the second shaft body.

4. The rotating shaft mechanism according to claim 3, wherein: The outer circumferential surface of the second shaft body is provided with a plurality of first locking portions along the circumferential direction, the elastic self-locking assembly includes a locking member and an elastic member, the locking member is arranged in an arc shape and is arranged around the outer circumference of the second shaft body, the inner circumferential surface of the locking member is provided with a plurality of second locking portions along the circumferential direction, the elastic member is arranged between the inner circumferential surface of the second ring body and the outer circumferential surface of the locking member, and the inner circumferential surface of the second ring body is provided with protrusions at both ends of the locking member corresponding to the locking member; in the first state, the second locking portion is locked with the first locking portion; in the second state, the second locking portion is separated from the first locking portion.

5. The rotating shaft mechanism according to claim 4, wherein: The locking member is provided in a hollow structure, the energy conversion member is provided in the cavity of the locking member, and the energy conversion member can be squeezed and deformed as the locking member is deformed.

6. The rotating shaft mechanism according to claim 5, wherein: The energy conversion element adopts a flexible piezoelectric film.

7. The rotating shaft mechanism according to claim 4, wherein: The elastic member includes a first elastic piece and a second elastic piece that are arranged relative to and spaced apart from each other, and a connecting elastic piece connected between the first elastic piece and the second elastic piece. The first elastic piece and the second elastic piece are both arranged in an arc shape. The first elastic piece is arranged to fit the outer circumferential surface of the locking member, and the second elastic piece is arranged to fit the inner circumferential surface of the second ring body.

8. The rotating shaft mechanism according to claim 3, wherein: Two arc-shaped cavities are defined between the second ring body and the second shaft body, and the elastic self-locking component and the energy conversion component are disposed in each of the arc-shaped cavities.

9. The rotating shaft mechanism according to claim 3, wherein: The main shaft also includes a third shaft body, which is arranged to protrude from the end of the second shaft body away from the first shaft body, and the third shaft body is used to connect with the first component; and / or the rotating buckle also includes a claw arranged on the outside of the ring body, and the claw is used to connect with the second component.

10. The rotating shaft mechanism according to claim 9, wherein: The rotating shaft mechanism further includes a baffle, which covers an end of the second ring body away from the first ring body, and the baffle is provided with a through hole for the third shaft body to pass through.

11. The rotating shaft mechanism according to any one of claims 3 to 10, characterized in that: The two ends of the first shaft are respectively connected to the second shaft, and two rotating buckles are provided along the axial direction of the main shaft. The first ring bodies of the two rotating buckles are both sleeved on the outer periphery of the first shaft, and the second ring bodies of the two rotating buckles are arranged in a one-to-one correspondence with the two second shafts. The elastic self-locking component and the energy conversion part are provided between each second ring body and the corresponding second shaft.

12. A head-mounted device, characterized in that: include: first component; Second component; Energy storage unit; as well as The rotating shaft mechanism according to any one of claims 1 to 11, wherein the main shaft is connected to the first component, the rotating buckle is connected to the second component, and the energy conversion component is electrically connected to the energy storage unit, and the energy conversion component is used to convert the mechanical energy generated during the rotation of the rotating buckle relative to the main shaft into electrical energy and transmit it to the energy storage unit for storage.

13. The head-mounted device according to claim 12, wherein: The energy storage unit is electrically connected to the load element of the head-mounted device. The connection circuit between the energy storage unit and the load element is provided with a rectification and filtering unit. The rectification and filtering unit is used to transmit the electric energy output by the energy storage unit to the load element after rectification and filtering.

14. The head-mounted device according to claim 12 or 13, wherein: The head-mounted device includes a wearing body and a display body, the wearing body is the first component, and the display body is the second component; the wearing body is provided with a mounting groove, the main shaft is fixed in the mounting groove, and the display body is connected to the rotating buckle.

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