Head-mounted device

Abstract

This invention discloses a head-mounted device comprising a housing, two lens barrels, and a drive assembly. The housing has a mounting cavity; the two lens barrels are movably disposed within the mounting cavity; the drive assembly includes an actuating element and at least two connecting rods. The actuating element movably passes through the housing and is capable of linear movement relative to the housing; one end of each connecting rod is rotatably connected to a structure of the actuating element extending into the mounting cavity, and the end of each connecting rod away from the actuating element is rotatably connected to one of the lens barrels; at least two connecting rods are respectively connected to two lens barrels; wherein, when the actuating element moves relative to the housing, the actuating element drives each connecting rod to move the two lens barrels toward or away from each other. The lens barrel drive structure in the head-mounted device proposed in this invention has a simpler structure, which can reduce the manufacturing cost of the head-mounted device.

Description

Technical Field

[0001] This invention relates to the field of wearable smart device technology, and in particular to a head-mounted device. Background Technology

[0002] With the advancement of display technology, virtual reality systems are being widely used in many fields such as computer games, health and safety, industry, and education and training. Virtual reality systems are being integrated into mobile communication devices, game consoles, personal computers and other devices, as well as in cinemas, theme parks, university laboratories, student classrooms, hospitals, gyms and other scenarios.

[0003] VR (Virtual Reality) devices are computer simulation devices that can create and experience virtual worlds. They use computer programs to generate a simulated environment, providing a multi-source information fusion, interactive three-dimensional dynamic visual scene and physical behavior simulation, allowing users to immerse themselves in the virtual environment.

[0004] With the development of VR display technology, users have placed higher demands on the user experience of VR devices. Since different people in the user group often have different interpupillary distances, different users have different requirements for the position of the lens barrel when wearing VR devices. VR devices need to detect the user's interpupillary distance and adjust the position of the lens barrel accordingly, so that the lenses inside the lens barrel can match the user's interpupillary distance, thereby adjusting the image output and improving the visual effect.

[0005] In related technologies, motors and other electric motors are used as power sources, and components such as gears and racks, worm gears and worm shafts, and lead screws and lead screw nuts are used as transmission components. The power source drives the lens barrel to move through the transmission components, thus realizing the interpupillary distance adjustment function of the VR device. In the above solution, the total number of components including the power source and transmission components is relatively large, the drive structure of the lens barrel is relatively complex, and the manufacturing cost of the VR device is high. Furthermore, installing these components into the VR device can easily lead to a significant increase in the VR device's weight, affecting the wearing experience. Summary of the Invention

[0006] The main objective of this invention is to provide a head-mounted device that simplifies the lens drive structure and reduces the manufacturing cost of the head-mounted device.

[0007] To achieve the above objectives, the present invention provides a head-mounted device, the head-mounted device comprising:

[0008] A housing having a mounting cavity;

[0009] Two lens barrels, both of which are movably disposed within the mounting cavity; and

[0010] A drive assembly includes a toggle member and at least two connecting rods. The toggle member is movably disposed through the housing and is capable of linear movement relative to the housing. One end of each connecting rod is rotatably connected to a structure into which the toggle member extends into the mounting cavity, and the end of each connecting rod away from the toggle member is rotatably connected to one of the lens barrels. At least two connecting rods are respectively connected to two lens barrels.

[0011] When the actuating member moves relative to the housing, it drives each of the connecting rods to move the two mirror barrels toward each other or apart.

[0012] In one embodiment of the present invention, each of the lens barrels has a first connecting portion and a first rotating shaft passing through the first connecting portion on its outer wall.

[0013] Each of the connecting rods has a first shaft hole at one end away from the actuating member, and is rotatably connected to a first connecting part through the first shaft hole and the hole shaft of a first rotating shaft.

[0014] In one embodiment of the present invention, each of the first connecting portions is provided with a first limiting groove, the first limiting groove having an opening that opens toward the actuating member;

[0015] A first rotating shaft extends into a first limiting groove, and each connecting rod passes through the opening of a first limiting groove and is rotatably connected to a first rotating shaft; the end of each connecting rod away from the actuating member is limited within a first limiting groove.

[0016] In one embodiment of the present invention, the inner wall of the mounting cavity is provided with a first guide rod, which extends along the moving direction of the lens barrel;

[0017] The first guide rod is movably inserted through the two first connecting parts. When the actuating member moves, it drives each of the connecting rods to move each of the first connecting parts along the first guide rod.

[0018] In one embodiment of the present invention, the inner wall of the mounting cavity is further provided with a second guide rod, the second guide rod being arranged parallel to the first guide rod, and the two lens barrels being located between the first guide rod and the second guide rod;

[0019] The outer wall of each of the lens barrels is also provided with a second connecting part, and the second guide rod is movably inserted through the second connecting part of each of the lens barrels. When the actuating member moves, it drives the two lens barrels to move along the second guide rod.

[0020] In one embodiment of the present invention, a second rotating shaft is provided at one end of the actuating member that extends into the mounting cavity;

[0021] Each of the connecting rods has a second shaft hole at one end near the actuating member, and is rotatably connected to the actuating member through the second shaft hole and the hole shaft of a second rotating shaft.

[0022] In one embodiment of the present invention, the actuating member is provided with a second limiting groove, the second limiting groove having two openings that are respectively open toward the two lens barrels;

[0023] The second rotating shaft extends into the second limiting groove, and each of the connecting rods passes through one opening of the second limiting groove and is rotatably connected to the second rotating shaft; the end of each connecting rod near the actuating member is limited to the second limiting groove.

[0024] In one embodiment of the present invention, the outer wall of the second rotating shaft is provided with at least one limiting member, each of the limiting members being located between two adjacent connecting rods to separate the two adjacent connecting rods.

[0025] In one embodiment of the present invention, the housing is provided with a guide groove communicating with the mounting cavity, and the inner wall of the guide groove is provided with a limiting protrusion having a through opening, the through opening extending along the extending direction of the guide groove, and the actuating member includes:

[0026] The slider, a portion of which is located within the guide groove and slidably engages with the limiting protrusion; the slider is rotatably connected to each of the connecting rods; and

[0027] A toggle switch is provided, with a portion of its structure passing through the opening and detachably connected to the slider. Another portion of the toggle switch is located on the side of the limiting protrusion facing away from the slider and slides against the periphery of the guide groove opening.

[0028] In one embodiment of the present invention, the slider is made of conductive material, and a conductive sheet is provided on the side of the limiting protrusion facing the slider. The slider and the conductive sheet slide against each other, and both the slider and the conductive sheet are connected to a resistance detection circuit.

[0029] This invention provides a solution by arranging two movable lens barrels, either facing each other or moving apart, within the mounting cavity of the housing. Each lens barrel is connected to a movable actuating element on the housing via at least one connecting rod. Each connecting rod has two ends rotatably connected to the actuating element and a lens barrel, respectively. When the actuating element is moved on the housing, the connecting rod rotates relative to the actuating element and the lens barrel connected to it. This allows the actuating element to drive the end of each connecting rod away from the actuating element to move, thereby causing the two lens barrels to move towards or away from each other. This achieves the interpupillary distance adjustment function of the head-mounted device. This invention achieves the movement drive of the lens barrels through a linkage structure composed of the actuating element and the connecting rod, eliminating the need for electric or pneumatic drive structures. The drive assembly has fewer components and a simpler structure, reducing the manufacturing cost of the head-mounted device and helping to lower its weight, thus improving the wearing experience. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the head-mounted device of the present invention;

[0032] Figure 2 for Figure 1 A side view of the head-mounted device;

[0033] Figure 3 for Figure 1 A top-view structural diagram of the head-mounted device;

[0034] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the head-mounted device along line A-A'.

[0035] Explanation of icon numbers:

[0036] label name label name 1 case 22 Second connecting part 11 First guide rod 3 Driver components 12 Second guide rod 31 toggle 13 Limiting convex part 311 Second pivot 131 conductive sheet 312 slider 13a Through 313 toggle switch 1a Guide groove 31a Second limiting groove 2 lens tube 32 link 21 First connecting part 33 First pivot 21a First limiting groove

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Throughout the text, "and / or" and "and / or" have the same meaning, both indicating the inclusion of three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] This invention provides a head-mounted device, such as... Figure 1As shown, the head-mounted device includes a housing 1, a drive assembly 3, and two lens barrels 2. The housing 1 has a mounting cavity, and the two lens barrels 2 are movably disposed within the mounting cavity. The drive assembly 3 includes an actuating element 31 and at least two connecting rods 32. The actuating element 31 is movably disposed through the housing 1 and can move linearly relative to the housing 1. One end of each connecting rod 32 is rotatably connected to a structure that extends into the mounting cavity from the actuating element 31, and the end of each connecting rod 32 away from the actuating element 31 is rotatably connected to a lens barrel 2. At least two connecting rods 32 are respectively connected to the two lens barrels 2. When the actuating element 31 moves relative to the housing 1, the actuating element 31 drives each connecting rod 32 to move the two lens barrels 2 toward each other or away from each other.

[0043] In this embodiment, the head-mounted device can be a VR or AR device, for example, the head-mounted device is a VR device. In this case, the head-mounted device also includes a display disposed in the mounting cavity of the housing 1. The display outputs virtual images to the human eye through an optical system composed of optical lenses, thereby creating a virtual display scene for the user.

[0044] The housing 1 encloses and forms an inner cavity, namely the aforementioned mounting cavity, which is used to accommodate and mount the lens barrel 2, the drive assembly 3, and the circuit module and optical components of the head-mounted device.

[0045] The lens barrel 2 is used to house the optical lenses. Two lens barrels 2 are respectively configured to correspond to the user's left and right eyes. The lens barrels 2 can be movably connected to the housing 1 via a groove or other means. For example, the inner wall of the mounting cavity is provided with a sliding groove, and the two lens barrels 2 are located within the sliding groove and can move towards or away from each other along the groove. The outer wall of the lens barrel 2 can also be provided with pulleys that slide against the groove wall to reduce the sliding resistance of the lens barrel 2. The two lens barrels 2 can move towards or away from each other within the mounting cavity to correspondingly change the distance between the two lens barrels 2 and the optical lenses within them, thereby realizing the interpupillary distance adjustment function of this head-mounted device.

[0046] The drive assembly 3 is used to drive the two lens barrels 2 to move synchronously towards or away from each other. In this embodiment, the drive assembly 3 is a manual drive structure. Its purpose is to avoid the problems of complex structure, increased weight and high manufacturing cost of the head-mounted device caused by the need to configure electric or pneumatic drive mechanisms in the automatic drive structure, as well as the need to set up transmission components such as gears and lead screws that cooperate with the corresponding drive mechanisms. Specifically, the drive assembly 3 provided in this embodiment includes a toggle member 31 and at least two connecting rods 32. The toggle member 31 is slidably connected to the housing 1, for example, the two are slidably connected by a groove. At least one connecting rod 32 is rotatably connected to a lens barrel 2 and the toggle member 31 at the same time, and at least another connecting rod 32 is rotatably connected to another lens barrel 2 and the toggle member 31 at the same time. The rotatable connection between the connecting rod 32 and the lens barrel 2 and the rotatable connection between the connecting rod 32 and the toggle member 31 can be achieved by a hole-shaft fit. For example, the two ends of the connecting rod 32 are respectively provided with protrusions, and the lens barrel 2 and the toggle member 31 are both provided with post holes. The protrusions at both ends of the connecting rod 32 can be rotatably inserted into the post holes of a lens barrel 2 and the post holes of the toggle member 31, respectively. The actuating element 31 is located between the two lens barrels 2. By actuating the actuating element 31, the actuating element 31 moves linearly relative to the housing 1, which causes the actuating element 31 to drive the connecting rod 32 rotatably connected to it to rotate. This causes the ends of the different connecting rods 32 connected to the two lens barrels 2 that are away from the actuating element 31 to move closer or further away, changing the included angle between the connecting rods 32 connected to the different lens barrels 2. Through each connecting rod 32, the two lens barrels 2 are further driven to move synchronously in the same direction or away from each other, thereby realizing the interpupillary distance adjustment function of this head-mounted device.

[0047] Therefore, the technical solution of this embodiment can realize the movement drive of the lens barrel 2 through the linkage structure composed of the toggle member 31 and the connecting rod 32, without the need to set up electric drive or pneumatic drive structures. The number of components in the drive assembly 3 is small and the structure is simple, which can reduce the manufacturing cost of the head-mounted device and help reduce the weight of the head-mounted device, thereby improving the wearing experience of the head-mounted device.

[0048] In one embodiment of the present invention, combined with Figures 1 to 3 As shown, each of the above-mentioned lens barrels 2 has a first connecting part 21 and a first rotating shaft 33 passing through the first connecting part 21 on its outer wall; each connecting rod 32 has a first shaft hole at one end away from the actuating member 31, and is rotatably connected to the first connecting part 21 through the first shaft hole and the hole shaft of the first rotating shaft 33.

[0049] In this embodiment, the first connecting part 21 and the lens barrel 2 can be integrally formed to reduce the manufacturing and assembly process of the head-mounted device, reduce the manufacturing cost of the head-mounted device, and at the same time help to improve the overall structural strength of the lens barrel 2 and the first connecting part 21.

[0050] The connecting rod 32 is rotatably connected to the first connecting part 21 through the hole of the first shaft 33 and the hole of the first rotating shaft 33. The connection structure between the connecting rod 32 and the first connecting part 21 only includes the first shaft 33 and the first rotating shaft 33. This connection structure is very simple and makes full use of the limited space on the first connecting part 21 and the connecting rod 32. It can simplify the rotational connection structure between the connecting rod 32 and the lens barrel 2, reduce the volume of the rotational connection structure between the connecting rod 32 and the lens barrel 2, minimize the number of components of this head-mounted device, and reduce the size, weight and manufacturing cost of this head-mounted device.

[0051] Optionally, the first rotating shaft 33 includes a first rod portion and a first cap portion. The outer wall of the first rod portion is provided with external threads, and the first connecting portion 21 is provided with a threaded hole with internal threads. The first rod portion passes through the first shaft hole of at least one connecting rod 32 and is screwed into the threaded hole of the first connecting portion 21 through the cooperation of the external and internal threads. This ensures that the end of at least one connecting rod 32 away from the actuating member 31 is located between at least a portion of the structure of the first connecting portion 21 and the cap portion of the first rotating shaft 33. The connecting rod 32 is stopped and limited by the cap portion and at least a portion of the structure of the first connecting portion 21 and will not slip off the first rotating shaft 33. In this way, the first rotating shaft 33 can be screwed and fixed to the first connecting portion 21 after passing through the first shaft hole of the connecting rod 32. The removal and installation of the connecting rod 32 on the first connecting portion 21 can be achieved simply by turning the first rotating shaft 33. The removal and installation of the connecting rod 32 and the lens barrel 2 are very convenient, which helps to improve the assembly and manufacturing efficiency of this head-mounted device.

[0052] In one embodiment of the present invention, combined with Figures 1 to 3 As shown, each of the first connecting portions 21 is provided with a first limiting groove 21a, the first limiting groove 21a having an opening that opens toward the actuating member 31; a first rotating shaft 33 extends into a first limiting groove 21a, each connecting rod 32 passes through the opening of a first limiting groove 21a and is rotatably connected to a first rotating shaft 33; one end of each connecting rod 32 away from the actuating member 31 is limited within a first limiting groove 21a.

[0053] In this embodiment, each first rotating shaft 33 can pass through two opposing side walls of the first limiting groove 21a. The first rotating shaft 33 can be screwed or plugged into the first connecting part 21 to achieve assembly and fixation with the first connecting part 21. The end of the connecting rod 32 away from the actuating member 31 is confined within the first limiting groove 21a and located between the two opposing side walls of the first limiting groove 21a, for example, located in... Figure 1 Between the upper and lower sidewalls of the first limiting groove 21a shown.

[0054] The first limiting groove 21a has a slot facing the actuating member 31, combined with Figure 1 and Figure 2As shown, the slot can extend circumferentially along the outer wall of the first connecting part 21 to form a U-shaped opening, making the first connecting part 21 have an overall U-shaped structure. Therefore, when the connecting rod 32 is assembled onto the first connecting part 21, the end of the connecting rod 32 can extend into the first limiting groove 21a through the slot opening of the first limiting groove 21a, and then the first rotating shaft 33 is inserted into the first connecting part 21 and the first limiting groove 21a, so that the first rotating shaft 33 passes through the first shaft hole on the end of the connecting rod 32. This makes the assembly of the connecting rod 32 very simple and convenient, which helps to improve the assembly and manufacturing efficiency of this head-mounted device.

[0055] In one embodiment of the present invention, combined with Figures 1 to 3 As shown, the inner wall of the mounting cavity is provided with a first guide rod 11, which extends along the moving direction of the lens barrel 2; the first guide rod 11 is movably inserted through the two first connecting parts 21, and when the actuating member 31 moves, it drives each connecting rod 32 to move each first connecting part 21 along the first guide rod 11.

[0056] In this embodiment, the first guide rod 11 is disposed on the housing 1 and located on the same side of the two lens barrels 2; for example, the housing 1 is provided with a first mounting block located on the same side of the two lens barrels 2, and the first guide rod 11 passes through or is fixed to the first mounting block. The first guide rod 11 has a first guide portion spaced apart from the housing 1. The first guide portion is located between the two ends of the first guide rod 11 and passes through the first connecting portion 21 of the two lens barrels 2. Under the drive of the actuating member 31, the first connecting portion 21 of the two lens barrels 2 moves linearly along the first guide portion of the first guide rod 11. In this way, the two lens barrels 2 can move linearly under the guidance of the first guide rod 11, preventing misalignment when the two lens barrels 2 move. The first guide rod 11 can improve the stability and reliability of the movement of the two lens barrels 2.

[0057] In one embodiment of the present invention, combined with Figure 1 and Figure 3 As shown, the inner wall of the mounting cavity is also provided with a second guide rod 12, which is arranged parallel to the first guide rod 11. The two lens barrels 2 are located between the first guide rod 11 and the second guide rod 12. The outer wall of each lens barrel 2 is also provided with a second connecting part 22. The second guide rod 12 is movably inserted through the second connecting part 22 of each lens barrel 2. When the actuating member 31 moves, it drives the two lens barrels 2 to move the two second connecting parts 22 along the second guide rod 12.

[0058] In this embodiment, the second connecting part 22 and the lens barrel 2 can be integrally formed to reduce the manufacturing and assembly process of the head-mounted device, reduce the manufacturing cost of the head-mounted device, and at the same time help to improve the overall structural strength of the lens barrel 2 and the second connecting part 22.

[0059] The second guide rod 12 is disposed on the housing 1 and located on the side of the two lens tubes 2 facing away from the second guide rod 12. The housing 1 may have a second mounting block on the side of the two lens tubes 2 facing away from the second guide rod 12. The second guide rod 12 passes through the second mounting block or is fixedly connected to the second mounting block. The second guide rod 12 has a second guide portion spaced apart from the housing 1. This second guide portion is located between the two ends of the second guide rod 12 and passes through the second connecting portion 22 of the two lens tubes 2. Driven by the actuating member 31, the second connecting portion 22 of the two lens tubes 2 moves linearly along the second guide portion of the second guide rod 12. By cooperating with the first guide rod 11 and the second guide rod 12 to guide the movement of the two lens tubes 2, non-linear lateral swaying during movement of the lens tubes 2 can be prevented. This further improves the stability and reliability of the movement of the two lens tubes 2, and enhances the accuracy and reliability of the interpupillary distance adjustment function of this head-mounted device.

[0060] In one embodiment of the present invention, combined with Figure 1 and Figure 3 As shown, the end of the aforementioned actuating member 31 that extends into the mounting cavity is provided with a second rotating shaft 311; each connecting rod 32 is provided with a second shaft hole at the end near the actuating member 31, and is rotatably connected to the actuating member 31 through the second shaft hole and the hole shaft of the second rotating shaft 311.

[0061] In this embodiment, the connecting rod 32 is rotatably connected to the actuating member 31 through the hole-shaft cooperation of the second shaft hole and the second rotating shaft 311. The connection structure between the connecting rod 32 and the actuating member 31 only includes the second shaft hole and the second rotating shaft 311. This connection structure is very simple and makes full use of the limited space on the actuating member 31 and the connecting rod 32. It can simplify the rotational connection structure between the connecting rod 32 and the actuating member 31, reduce the volume of the rotational connection structure between the connecting rod 32 and the actuating member 31, minimize the number of components of this head-mounted device, and reduce the size, weight and manufacturing cost of this head-mounted device.

[0062] Optionally, the second rotating shaft 311 includes a second rod portion and a second cap portion. The outer wall of the second rod portion is provided with an external thread, and the actuating member 31 is provided with a threaded hole with an internal thread. The second rod portion passes through the second shaft hole of each connecting rod 32 and is screwed into the threaded hole of a actuating member 31 through the cooperation of the external thread and the internal thread, so that one end of each connecting rod 32 is located between at least a part of the structure of the actuating member 31 and the cap portion of the second rotating shaft 311. The connecting rod 32 is stopped and limited by the cap portion of the second rotating shaft 311 and at least a part of the structure of the actuating member 31 and will not slip off the second rotating shaft 311. Thus, the first rotating shaft 33 can first pass through the first shaft hole of the connecting rod 32 and then be screwed and fixed to the first connecting part 21. The assembly and disassembly of the connecting rod 32 on the first connecting part 21 can be achieved simply by turning the first rotating shaft 33. The second rotating shaft 311 can first pass through the second shaft hole of the connecting rod 32 and then be screwed and fixed to the actuating member 31. The assembly and disassembly of the connecting rod 32 on the actuating member 31 can be achieved simply by turning the second rotating shaft 311. The assembly and disassembly of the connecting rod 32 with the lens barrel 2 and the actuating member 31 are very convenient, which is conducive to improving the assembly and manufacturing efficiency of this head-mounted device.

[0063] In one embodiment of the present invention, combined with Figure 1 and Figure 4 As shown, the aforementioned actuating member 31 is provided with a second limiting groove 31a, which has two openings that are open toward the two lens barrels 2 respectively; the second rotating shaft 311 extends into the second limiting groove 31a, and each connecting rod 32 passes through one opening of the second limiting groove 31a and is rotatably connected to the second rotating shaft 311; one end of each connecting rod 32 near the actuating member 31 is limited to the second limiting groove 31a.

[0064] In this embodiment, each second rotating shaft 311 can pass through two opposing side walls of the second limiting groove 31a. The second rotating shaft 311 can be screwed or plugged into the second connecting part 22 to achieve assembly and fixation. The end of the connecting rod 32 away from the lens barrel 2 it is connected to is limited within the second limiting groove 31a and located between the two opposing side walls of the second limiting groove 31a, for example, located in... Figure 4 Between the upper and lower sidewalls of the second limiting groove 31a shown.

[0065] The second limiting groove 31a has two openings facing the two lens barrels 2, combined with Figure 1 and Figure 4As shown, the second limiting groove 31a can be a through groove. Therefore, when the connecting rod 32 is assembled onto the actuating member 31, the connecting rod 32 connected to different lens barrels 2 can extend into the second limiting groove 31a through different openings. Then, the second rotating shaft 311 is inserted into the second connecting part 22 and the second limiting groove 31a, so that the second rotating shaft 311 passes through the second shaft hole on the end of the connecting rod 32. Thus, the assembly of the connecting rod 32 onto the actuating member 31 is very simple and convenient, which helps to improve the assembly and manufacturing efficiency of this head-mounted device.

[0066] In one embodiment of the present invention, combined with Figure 1 and Figure 4 As shown, the outer wall of the second rotating shaft 311 is provided with at least one limiting member (not shown in the figure), and each limiting member is located between two adjacent connecting rods 32 to separate the two adjacent connecting rods 32.

[0067] In this embodiment, the limiting member can be a protruding structure provided on the outer wall of the second rotating shaft 311, such as a protrusion, a protrusion, a protrusion block, etc.; or it can be an annular structure sleeved on the outer peripheral wall of the second rotating shaft 311, such as a metal ring, a rubber ring, etc., and each limiting member is connected and fixed to the second rotating shaft 311.

[0068] Taking the head-mounted device as an example, which has two connecting rods 32 that connect two lens barrels 2 respectively, the rotation directions of the two connecting rods 32 are always opposite when the actuating member 31 moves linearly relative to the housing 1. When the end of one connecting rod 32 that is rotatably connected to the actuating member 31 rotates clockwise, the end of the other connecting rod 32 that is rotatably connected to the actuating member 31 will inevitably rotate counterclockwise. Therefore, the rotation between the two connecting rods 32 is mutually interfering. That is, in addition to the friction between the two connecting rods 32, either connecting rod 32 will also be driven by the rotation of the other connecting rod 32. This will result in a strong force between the rotational connection of the two connecting rods 32 and the actuating member 31. This will not only increase the resistance when the lens barrel 2 moves, but also make the rotational connection of the two connecting rods 32 and the actuating member 31 more prone to wear, affecting the service life of the interpupillary distance adjustment structure in this head-mounted device. Therefore, this embodiment provides a limiting member connected to the second rotating shaft 311 between two adjacent toggle members 31. By separating the two adjacent toggle members 31 with the limiting member, rotational interference caused by the mutual force exerted by the two adjacent connecting rods 32 during rotation can be avoided, thereby improving the service life of the interpupillary distance adjustment structure in the head-mounted device. Furthermore, by selecting the material of the limiting member and smoothing its surface, the frictional resistance experienced by the connecting rod 32 during rotation can be reduced, thereby improving the smoothness of toggle member 31 operation and interpupillary distance adjustment in the head-mounted device.

[0069] In one embodiment of the present invention, combined with Figure 1 , Figure 3 as well as Figure 4As shown, the housing 1 is provided with a guide groove 1a that communicates with the mounting cavity. The inner wall of the guide groove 1a is provided with a limiting protrusion 13 having a through opening 13a. The through opening 13a extends along the extension direction of the guide groove 1a. The toggle member 31 includes a slider 312 and a toggle switch 313. Part of the structure of the slider 312 is located in the guide groove 1a and slides with the limiting protrusion 13. The slider 312 is rotatably connected to each connecting rod 32. Part of the structure of the toggle switch 313 passes through the through opening 13a and is detachably connected to the slider 312. Another part of the structure of the toggle switch 313 is located on the side of the limiting protrusion 13 facing away from the slider 312 and slides against the periphery of the groove opening of the guide groove 1a.

[0070] In this embodiment, parts of the toggle switch 313 and the slider 312 are located on the inner and outer sides of the housing 1, respectively. The slider 312 is located inside the mounting cavity, and the toggle switch 313 is located outside the mounting cavity and is used by the user to toggle it. The toggle switch 313 can be detachably connected to the slider 312 by means of plugging or snapping. For example, the side of the slider 312 facing the toggle switch 313 has a slot, and the side of the toggle switch 313 facing the slider 312 has a plug, which is inserted into the slot. Because the toggle switch 313 and the slider 312 are connected in a detachable manner, only a portion of the toggle switch 313 needs to pass through the opening 13a to detachably connect with the slider 312. This allows the slider 312 and the toggle switch 313 to be positioned on opposite sides of the limiting protrusion 13, facilitating the assembly of the toggle switch 313 and the slider 312, as well as their assembly onto the housing 1. This improves the assembly and manufacturing efficiency of the head-mounted device. The limiting protrusion 13 can be integrally formed with the housing 1. The limiting protrusion 13 can be an annular structure, which encloses the aforementioned elongated opening 13a; or, the limiting protrusion 13 includes bosses respectively located on opposite side walls of the guide groove 1a, with the two bosses spaced apart, forming the aforementioned opening 13a between them.

[0071] In one embodiment of the present invention, combined with Figure 1 , Figure 3 as well as Figure 4 As shown, the slider 312 is made of conductive material. The limiting protrusion 13 has a conductive sheet 131 on the side facing the slider 312. The slider 312 and the conductive sheet 131 slide against each other. Both the slider 312 and the conductive sheet 131 are connected to the resistance detection circuit.

[0072] In this embodiment, the slider 312 can be made of conductive metal, such as copper foil. The slider 312 and the conductive sheet 131 form a sliding rheostat structure. By connecting one end of the slider 312 and the conductive sheet 131 to the resistance detection circuit, the resistance of the sliding rheostat structure composed of the slider 312 and the conductive sheet 131 can be detected by the resistance detection circuit. Since the resistance of the slider 312 and the conductive sheet 131 is constant, and the length of the connecting rod 32 is constant, the position of the slider 312 relative to the conductive sheet 131 can be determined based on the obtained resistance. Thus, the distance between the two lens barrels 2 and the interpupillary distance of the head-mounted device can be obtained, thereby realizing the accurate interpupillary distance adjustment function of the head-mounted device.

[0073] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A head-mounted device, characterized in that, The head-mounted device includes: A housing having a mounting cavity; Two lens barrels are movably disposed within the mounting cavity. The inner wall of the mounting cavity is provided with a first guide rod extending along the moving direction of the lens barrel. The outer wall of each lens barrel is provided with a first connecting portion, and the first guide rod movably passes through the two first connecting portions. A drive assembly is disposed on the side of the housing facing the end of the lens barrel. The drive assembly includes an actuating element and at least two connecting rods. The actuating element is movably inserted through the housing and can slide relative to the housing in a direction perpendicular to the first guide rod. One end of each connecting rod is rotatably connected to a structure in which the actuating element extends into the mounting cavity, and the end of each connecting rod away from the actuating element is rotatably connected to one of the lens barrels. At least two connecting rods are respectively connected to two lens barrels. Each of the lens barrels has a first rotating shaft passing through the first connecting part on its outer wall; each of the first connecting parts has a first limiting groove, the first limiting groove having an opening that opens toward the actuating member. Each of the connecting rods has a first shaft hole at one end away from the actuating member, and is rotatably connected to a first connecting part through the first shaft hole and the hole shaft of a first rotating shaft. A first rotating shaft extends into a first limiting groove, and each connecting rod passes through the opening of a first limiting groove and is rotatably connected to a first rotating shaft; the end of each connecting rod away from the actuating member is limited within a first limiting groove. The first guide rod has a central portion located at the center of the two lens barrels. The sidewalls of the two lens barrels facing the central portion are recessed to form recessed portions. The two recessed portions and the first guide rod enclose an adjustment area. The actuating member and at least two connecting rods are movably disposed in the adjustment area. When the actuating member moves relative to the housing, the actuating member drives each of the connecting rods to move the two lens barrels toward each other or away from each other. The inner wall of the mounting cavity is also provided with a second guide rod, which is arranged parallel to the first guide rod, and the two lens barrels are located between the first guide rod and the second guide rod; The outer wall of each of the lens barrels is also provided with a second connecting part, and the second guide rod is movably inserted through the second connecting part of each of the lens barrels. When the actuating member moves, it drives the two lens barrels to move along the second guide rod.

2. The head-mounted device as claimed in claim 1, characterized in that, One end of the actuating element that extends into the mounting cavity is provided with a second rotating shaft; Each of the connecting rods has a second shaft hole at one end near the actuating member, and is rotatably connected to the actuating member through the second shaft hole and the hole shaft of a second rotating shaft.

3. The head-mounted device as described in claim 2, characterized in that, The actuating component is provided with a second limiting groove, which has two openings that open toward the two lens barrels respectively; The second rotating shaft extends into the second limiting groove, and each of the connecting rods passes through one opening of the second limiting groove and is rotatably connected to the second rotating shaft; the end of each connecting rod near the actuating member is limited to the second limiting groove.

4. The head-mounted device as described in claim 2, characterized in that, The outer wall of the second rotating shaft is provided with at least one limiting member, each of the limiting members being located between two adjacent connecting rods to separate the two adjacent connecting rods.

5. The head-mounted device as claimed in claim 1, characterized in that, The housing is provided with a guide groove communicating with the mounting cavity, and the inner wall of the guide groove is provided with a limiting protrusion having a through opening, the through opening extending along the extending direction of the guide groove. The actuating element includes: The slider, a portion of which is located within the guide groove and slidably engages with the limiting protrusion; the slider is rotatably connected to each of the connecting rods; and A toggle switch is provided, with a portion of its structure passing through the opening and detachably connected to the slider. Another portion of the toggle switch is located on the side of the limiting protrusion facing away from the slider and slides against the periphery of the guide groove opening.

6. The head-mounted device as claimed in claim 5, characterized in that, The slider is made of conductive material, and a conductive sheet is provided on the side of the limiting protrusion facing the slider. The slider and the conductive sheet slide against each other, and both the slider and the conductive sheet are connected to a resistance detection circuit.

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