Self-locking structure and intelligent glasses

Abstract

This application provides a self-locking structure and smart glasses. The self-locking structure includes a first connector, a second connector, a locking mechanism, and an adjustment mechanism. The first connector is used to connect to the frame. One end of the second connector is rotatably connected to the end of the first connector, and the other end is used to connect to the temple. The locking mechanism is disposed between the first and second connectors and is used to lock the rotation of the second connector when it rotates to a predetermined angle. The adjustment mechanism is slidably engaged with the first connector and drivenly connected to the locking mechanism. The adjustment mechanism is used to drive the locking mechanism to move along the length of the first connector to adjust the locking angle of the second connector when locked. This application achieves automatic self-locking when the temple is unfolded through the locking mechanism and fine-tunes the angle in the locked state through the adjustment mechanism, improving wearing stability and applicability.

Description

Technical Field

[0001] This application relates to the field of smart wearable devices, and more particularly to a self-locking structure and smart glasses. Background Technology

[0002] With the rapid development of augmented reality (AR) and virtual reality (VR) technologies, smart glasses, as an important terminal device for human-computer interaction, have been widely used in fields such as industrial inspection, remote collaboration, education and entertainment, and medical assistance.

[0003] Smart glasses typically use a hinge structure to connect the temples to the frame, in order to fit different wearers' head sizes and usage needs. Summary of the Invention

[0004] This application provides a self-locking structure and smart glasses to adapt to the head size and usage needs of different wearers.

[0005] In a first aspect, embodiments of this application provide a self-locking structure, including:

[0006] The first connector is used to attach to the frame;

[0007] The second connector has one end rotatably connected to the end of the first connector, and the other end is used to connect to the temple of the mirror.

[0008] A locking mechanism is disposed between the first connector and the second connector, and configured to lock the rotation of the second connector relative to the first connector when the second connector rotates to a predetermined angle;

[0009] The adjustment mechanism is slidably engaged with the first connecting member and drivenly connected to the locking mechanism; the adjustment mechanism is used to drive the locking mechanism to move along the length direction of the first connecting member in order to adjust the locking angle of the second connecting member when it is locked.

[0010] Secondly, embodiments of this application provide smart glasses, including:

[0011] The frame, temples, and self-locking structure provided above; the first connector is fixed to the frame, and the second connector is fixedly connected to the temples.

[0012] This application provides a self-locking structure and smart glasses. By setting a first connector, a second connector rotatably connected to it, a locking mechanism disposed between the two and automatically locking when the second connector rotates to a predetermined angle, and an adjustment mechanism that slides with the first connector and can drive the locking mechanism to move along the length direction of the first connector, the rotational position can be automatically locked during the opening and closing of the temples, and the angle of the second connector can be adjusted in the locked state. This reduces the structural complexity and assembly tolerance accumulation caused by the dispersion of rotation and adjustment functions, and at the same time helps to improve adjustment reliability, long-term stability and space utilization. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the adjustment mechanism in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the tail-pressing mechanism in an embodiment of this application;

[0017] Figure 4 This is a partial schematic diagram of the first connector in an embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the bent state in an embodiment of this application;

[0019] Figure 6 This is a flowchart illustrating an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100. First connecting piece; 110. First step; 120. Second step; 130. Spring piece; 200. Second connecting piece; 300. Locking mechanism; 310. First link; 320. Second link; 330. First pivot; 340. Second pivot; 350. Third pivot; 400. Adjustment mechanism; 410. Sliding piece; 420. Elastic piece; 430. Limiting piece; 500. Tail pressing mechanism.

[0022] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features can be combined with each other.

[0024] Smart glasses require a hinge structure between the temples and the frame to open and close, and they also need to adapt to different user head sizes to ensure wearing comfort. In actual use, users often need to operate the device with one hand, such as when quickly putting on and taking off glasses in outdoor scenarios. Traditional hinge structures lack a self-locking function, causing the temples to droop naturally under gravity, resulting in inconvenience when wearing them.

[0025] Furthermore, the temples of smart glasses typically integrate electronic components such as flexible printed circuits (FPCs), and the space utilization efficiency of the hinge area directly affects the miniaturization and functional expansion capabilities of the device. Existing hinge structures often encroach on circuit layout space due to their large hinge diameter, limiting the integration of electronic components in the temple area. At the same time, the temple spacing adjustment function relies on complex mechanical structures, making it difficult to control assembly precision and affecting product consistency.

[0026] Most existing smart glasses hinge solutions employ a separate pin-driven rotation connection and independent adjustment mechanism to achieve basic functionality. Specifically, one end of the temple is hinged to the frame via a pin. When the user unfolds the temple, it rotates relative to the frame around the pin to the desired wearing angle. To accommodate different head sizes, additional sliding, snap-fit, elastic, or multi-segment positioning components are used to adjust the temple spacing or opening angle. While this approach achieves opening and closing and a certain degree of adjustment, the separation of rotation and adjustment functions often requires numerous components, resulting in a long structural chain. The assembly process is highly sensitive to dimensional accuracy and relative positional relationships. Accumulated tolerances can easily lead to problems such as inconsistent temple tension, angle positioning deviations, adjustment stagnation, or positional drift after prolonged use.

[0027] Furthermore, traditional solutions typically lack the ability to automatically maintain their position at a predetermined unfolding angle. Even after the temples are unfolded, they may still swing back under external forces or their own weight, affecting the user's experience of putting on and taking off the glasses with one hand and quickly. At the same time, in order to support rotation and additional adjustment functions, the hinges and surrounding components in existing structures often occupy a large installation space, making the internal layout at the base of the temples more crowded, which is not conducive to the integration of electronic components and the overall lightweight and miniaturized design. In addition, there is often a lack of coordination between the independent adjustment mechanism and the rotation mechanism, making it difficult to simultaneously achieve the stability of the adjusted angle and the repeatability of positioning accuracy. Ultimately, this limits the stability of opening and closing, the reliability of adjustment, the space utilization, and the consistency of batch assembly.

[0028] To overcome the shortcomings of existing technologies, this application provides a self-locking structure and smart glasses. The self-locking structure includes a first connector for connecting to a frame, a second connector rotatably connected to the end of the first connector and for connecting to the temples, a locking mechanism disposed between the two, and an adjustment mechanism slidably engaged with the first connector. When the second connector rotates relative to the first connector to a predetermined angle, the locking mechanism automatically locks the rotational position of the second connector, thereby keeping the temples stable in the target unfolded state. Simultaneously, the adjustment mechanism is movably connected to the locking mechanism and can drive the locking mechanism to move along the length direction of the first connector to adjust the angle of the second connector in the locked state. The length direction of the first connector refers to the longitudinal axis direction of the first connector. The first connector is a long strip-shaped component, with its two ends connected to the frame and the second connector, respectively. This direction is determined by the geometry of the first connector and is the movable direction of the sliding member relative to the first connector.

[0029] This technical approach is still applied to the connection architecture between the frame and temple of smart glasses. However, by introducing a locking and sliding adjustment mechanism within the connection structure, the opening and closing positioning and wearing adaptation are achieved in the same system, thus providing a foundation for improving wearing stability, adjustment reliability, and overall structural integration.

[0030] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the adjustment mechanism in an embodiment of this application; Figure 3 This is a schematic diagram of the tail-pressing mechanism in an embodiment of this application; Figure 4 This is a partial schematic diagram of the first connector in an embodiment of this application; Figure 5 This is a schematic diagram of the bent state in an embodiment of this application; Figure 6 This is a flowchart illustrating an embodiment of this application.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This application provides a self-locking structure, including a first connector 100 for connecting to a mirror frame, a second connector 200 with one end rotatably connected to the end of the first connector 100 and the other end for connecting to the temple, a locking mechanism 300 disposed between the first connector 100 and the second connector 200 and configured to lock the rotation position of the second connector 200 when the second connector 200 rotates to a predetermined angle, and an adjustment mechanism 400 that slides with the first connector 100 and is drivenly connected to the locking mechanism 300 to drive the locking mechanism 300 to move along the length direction of the first connector 100 to adjust the angle of the second connector 200 in the locked state.

[0033] In this embodiment, the first connector 100 serves as the fixing base of the entire self-locking structure, used for rigid connection with the eyeglass frame. The first connector 100 is typically designed as a long strip or plate-shaped piece with sufficient structural strength, and its surface or interior is provided with a sliding guide structure (such as a groove or guide rail) that cooperates with the adjustment mechanism 400. The first connector 100 can withstand the load during the opening and closing of the temples and provides an installation reference for other components.

[0034] In one possible embodiment, the first connector 100 may be a metal connecting rod, an engineering plastic bearing, or a metal and plastic composite. Exemplary implementations may also include aluminum alloy profiles, zinc alloy die castings, or stainless steel precision stampings. In other embodiments, high-strength resin, carbon fiber reinforced composite materials, or titanium alloy materials may also be used. The length of the first connector 100 is generally greater than its cross-sectional thickness to form sufficient guide stroke and installation space. The length direction is generally consistent with the extension direction of the end of the frame. The area used to form a sliding fit with the adjustment mechanism 400 may be set as a relatively flat guide rail surface, slide groove surface, or guide rib structure to ensure the stability of the locking mechanism when it moves.

[0035] The second connector 200 serves as a bridge connecting the temple and the self-locking structure. One end is rotatably connected to the first connector 100, and the other end is fixedly connected to the temple. The second connector 200 is L-shaped or straight-arm shaped, and the end connected to the first connector 100 is provided with a pivot hole or pivot pin. The second connector 200 rotates around the end of the first connector 100 from 0° to a predetermined angle (usually 90° or greater), and transmits the rotational motion of the temple to the locking mechanism 300.

[0036] In one possible embodiment, the second connector 200 may be composed of a metal swing arm, an engineering plastic swing arm, or a composite material swing arm. Exemplary implementations may include an integral bent aluminum alloy part, a zinc alloy die-cast part, a stainless steel stamped part, or a connecting shell injection molded from high-strength resin. In other embodiments, titanium alloy or carbon fiber reinforced materials may also be used to balance strength, weight, and processability. The effective rotation length of the second connector 200 is generally adapted to the length of the temple mounting section. The rotation trajectory needs to avoid the guide structure inside or around the first connector 100 to avoid interference and ensure smooth opening and closing. At the same time, the thickness and width of its connecting end are usually matched with the end structure of the first connector 100 to improve hinge stability and reduce sway.

[0037] The locking mechanism 300 achieves an automated "locking upon positioning" function. When the second connector 200 rotates to a preset unfolding angle (e.g., the temple is fully opened to be approximately perpendicular to the frame), the locking mechanism 300 automatically enters the locking state, preventing the second connector 200 from rotating freely.

[0038] The locking mechanism 300 can be implemented in various ways, such as: a crank-connecting rod dead-point mechanism, a ratchet and pawl mechanism, a spring-loaded buckle and slot engagement, a top ball and recess engagement, etc. This solution preferably uses a connecting rod dead-point mechanism (such as the first and second connecting rods being collinear dead points). In the locked state, the temples maintain their extended angle without the user needing to apply continuous force, greatly improving wearing convenience.

[0039] The adjustment mechanism 400 is used to achieve fine-tuning of the angle in the locked state. That is, without releasing the self-locking characteristic of the locking mechanism, the locking angle of the second connecting member 200 can be changed by translating the adjustment mechanism 400.

[0040] The adjustment mechanism 400 includes a slider, an elastic element (spring), and a limiting element. The slider slides into the first connecting member 100 and is movably connected to the locking mechanism 300 (e.g., via a pivot). By moving the slider, the geometric relationship of the connecting rods in the locking mechanism 300 is changed, thereby fine-tuning the angle of the second connecting member 200. The adjustment mechanism 400 adapts to different users' head shapes, widths, or wearing habits, allowing for a small range of angle adjustments to the temples even in the locked state, thus improving wearing comfort.

[0041] Exemplarily, the first connector 100 is mounted on the end of the eyeglass frame (i.e., the parts on both sides of the frame used to connect the temples), serving as the base of the entire self-locking structure. One end of the second connector 200 is rotatably connected to the end of the first connector 100, allowing the second connector 200 to rotate freely around the end of the first connector 100 within a range of 0° to a predetermined maximum angle (typically 90°-110°). The other end of the second connector 200 is fixedly connected to the temple (by screws, clips, or integral molding). Through this connection, the folding and unfolding of the temples relative to the frame is achieved.

[0042] The locking mechanism 300 is disposed in the space between the first connecting member 100 and the second connecting member 200. One end of the locking mechanism 300 is rotatably connected to the sliding member of the adjusting mechanism 400, and the other end is rotatably connected to the second connecting member 200. When the second connecting member 200 rotates, the locking mechanism 300 moves accordingly; when the second connecting member 200 reaches a predetermined angle, the connecting rods inside the locking mechanism 300 form a collinear dead point structure, thereby automatically locking the rotational position.

[0043] The sliding member of the adjusting mechanism 400 slides in conjunction with a groove or guide rail on the first connecting member 100, allowing it to move linearly along the length of the first connecting member 100. The sliding member of the adjusting mechanism 400 is movably connected (usually rotatably connected) to the locking mechanism 300, converting the linear motion of the sliding member into an angular change in the connecting rod inside the locking mechanism 300. One end of the elastic member in the adjusting mechanism 400 abuts against the sliding member, and the other end abuts against a limiting member fixed to the first connecting member 100, providing a restoring force or retaining force for the sliding member.

[0044] Based on the above analysis, it can be seen that in the operation of the self-locking structure provided in this application embodiment, when the second connector 200 rotates around the end of the first connector 100, the user can first unfold the temple from the folded state to the wearing position. As the second connector 200 gradually approaches the predetermined angle, the locking mechanism 300 automatically enters the locking state under the combined action of its own geometric relationship, elastic pre-tightening, or locking engagement, so that the second connector 200 remains stable relative to the first connector 100. Subsequently, when it is necessary to adapt according to different head widths or wearing tightness, the adjustment mechanism 400 slides along the length direction of the first connector 100 and changes the positional relationship of the locking member through the movable connection with the locking mechanism 300, so that the engagement point of the locking mechanism 300 is offset, thereby allowing the second connector to correspond to different unfolding angles or holding positions in the locked state.

[0045] Because the rotation connection, self-locking retention and angle adjustment are integrated into the same connection system, the temples can obtain more stable support after being unfolded, and are less prone to swinging back or angle drift. At the same time, the adjustment process no longer relies on the coordinated work of multiple independent and scattered components, thereby reducing the structural hierarchy and assembly difficulty of the hinge area.

[0046] Furthermore, the first connector 100 serves as a guide and bearer. The adjustment mechanism 400 can drive the locking mechanism 300 to complete the position switching by moving along the length of the first connector 100. This gives the angle adjustment a clear mechanical transmission path, which can improve the consistency of the adjustment response and the accuracy of repeated positioning. It also allows for more space to be reserved inside the temple for arranging wiring, sensors, or flexible circuits.

[0047] Therefore, this embodiment ensures smooth opening and closing of the temples while achieving automatic locking of the unfolded position and fine-tuning of the angle during wearing, thus balancing structural compactness, wearing stability, and long-term reliability. It should be understood that the above examples are merely illustrative and not limiting; the specific materials, shapes, and transmission methods of the first connector, second connector, locking mechanism, and adjustment mechanism can be varied without departing from the concept of this application.

[0048] In one possible implementation, see Figure 1 , Figure 2 , Figure 4 and Figure 5 The locking mechanism 300 includes a first link 310 and a second link 320. One end of the first link 310 is rotatably connected to the adjusting mechanism 400, and the other end is hinged to the end of the second link 320. The end of the second link 320 away from the first link 310 is rotatably connected to the second connector 200. When the second connector 200 rotates to a predetermined angle, the first link 310 and the second link 320 form a collinear structure to lock the rotation of the second connector 200 relative to the first connector 100.

[0049] In this embodiment, the first link 310 serves as the active link of the locking mechanism 300, responsible for converting the linear motion of the adjusting mechanism 400 into angular motion, and cooperates with the second link 320 to form a dead point.

[0050] The first connecting rod 310 is a long strip-shaped rod with hinge holes at both ends. One end is rotatably connected to the sliding member of the adjusting mechanism 400 via a first rotating shaft, and the other end is hinged to the end of the second connecting rod 320 via a hinge shaft.

[0051] When the second connector 200 rotates, the first link 310 is pushed by the second link 320, which in turn drives the sliding member of the adjustment mechanism 400 to move. In the locked state, the first link 310 and the second link 320 are collinear, bear the folding pressure from the second connector 200, and transmit the pressure along the axial direction of the link, using the collinear geometric characteristics to prevent rotation.

[0052] The second link 320, as the driven link of the locking mechanism 300, directly responds to the rotation of the second connecting member 200 and transmits the motion to the first link 310.

[0053] The second connecting rod 320 is a long strip-shaped rod, with one end rotatably connected to the second connecting member 200 and the other end hinged to the first connecting rod 310.

[0054] When the user unfolds or folds the temples, the second connector 200 drives the second link 320 to swing, which in turn pushes the first link 310 to move. At the dead point, the second link 320 and the first link 310 are collinear, and together they form a rigid linear support, preventing the second connector 200 from rotating.

[0055] Geometric definition of dead point position: The central axes of the first link 310 and the second link 320 coincide, forming a straight line.

[0056] In the collinear state, the folding torque acting on the second connector 200 has zero lever arm about the hinge shaft, and the torque cannot be converted into rotation of the link, thus the system is self-locking. It can only be unlocked by actively breaking the collinearity (e.g., by applying additional torque by the tail-pressing mechanism or by moving the adjusting mechanism 400).

[0057] The predetermined angle refers to the angle value corresponding to the second connecting member 200 rotating relative to the first connecting member 100 until the first link 310 and the second link 320 are collinear.

[0058] This angle usually corresponds to the opening angle when the temples are fully extended to the wearing position, and is generally set to 90°-110°.

[0059] This angle is determined by the lengths of the first link 310 and the second link 320, the position of the hinge point, and the relative positions of each pivot. It is a fixed value determined through geometric calculations during the design phase and has a high degree of repeatability and consistency.

[0060] For example, one end of the first link 310 is rotatably connected to the slider of the adjusting mechanism 400 via a rotating shaft. The axis of the rotating shaft is perpendicular to the plane of motion of the first link 310, allowing the first link 310 to swing freely around the rotating shaft. At the same time, the slider of the adjusting mechanism 400 can move linearly along the length of the first connecting member 100, thereby changing the position of the end point of the first link 310 and thus adjusting the locking angle.

[0061] The end of the first link 310 furthest from the adjusting mechanism 400 is hinged to the end of the second link 320 via a hinge shaft. This hinge shaft allows relative rotation between the two links, the range of rotation being limited by the geometry of the links and the trajectory of the mechanism. This hinge point is the core location forming the collinear dead point, that is, when the angle between the first link 310 and the second link 320 is 180°, the two are collinear.

[0062] The end of the second link 320 furthest from the first link 310 is rotatably connected to the second connector 200. The second connector 200 acts as the driving member, and its rotation directly drives the second link 320 to swing.

[0063] During operation, when the adjustment mechanism 400 moves along the length of the first connector 100, it causes the first link 310 to swing accordingly. The first link 310 then drives the second link 320 to rotate synchronously through the end hinge relationship with the second link 320, thereby causing the second link 320 to move in conjunction with the second connector 200. When the user unfolds the second connector 200 driven by the temple outward and rotates it to the predetermined unfolding position angle, the first link 310 and the second link 320 gradually tend to be on the same straight line and enter a collinear state. At this time, the linkage mechanism forms a geometric self-locking structure close to the dead point. The second connector 200 can still maintain the current angle after the external force is removed and is not easy to swing back due to its own weight, vibration or wearing disturbance.

[0064] Meanwhile, if the temples need to be folded back, simply apply an external force opposite to the locking direction to decouple the first link 310 and the second link 320 from their collinear state, releasing the dead-point lock and restoring rotational freedom, thus achieving a reliable switch between unfolding and releasing. It can be seen that this structure utilizes the collinear self-locking principle of the two links to organically combine adjustment and locking, achieving stable positioning of the second connector 200 with fewer parts. This improves reliability and repeatability in the unfolded state, reduces the structural space occupied by the hinge area, and enhances the compactness, assembly consistency, and long-term stability of the smart glasses. It should be understood that the above example is for demonstration purposes only and is not limiting.

[0065] In one possible implementation, see Figure 1 , Figure 3 , Figure 5 The first connecting rod 310 is rotatably connected to the adjusting mechanism 400 via the first rotating shaft 330; and / or, the second connecting rod 320 is rotatably connected to the second connecting member 200 via the second rotating shaft 340; and / or, the second connecting member 200 is rotatably connected to the first connecting member 100 via the third rotating shaft 350.

[0066] In one possible embodiment, the first pivot 330, the second pivot 340, and the third pivot 350 are all mechanical connectors used to realize relative rotation of adjacent components. Essentially, they are the centers of the rotational pairs arranged in the self-locking structure of the smart glasses hinge, and are used to provide controllable rotational freedom between the first link 310, the second link 320, the adjustment mechanism 400, the first connector 100, and the second connector 200.

[0067] The first rotating shaft 330 is located at the connection between the first connecting rod 310 and the adjusting mechanism 400, so that when the adjusting mechanism 400 slides along the length direction of the first connecting member 100, it can drive the first connecting rod 310 to swing relative to the adjusting mechanism 400, thereby adapting to the posture changes of the locking mechanism 300 during the unfolding, unlocking and repositioning process.

[0068] The second pivot 340 is located at the connection between the second link 320 and the second connector 200, so that the second link 320 can swing relative to the second connector 200 as the angle changes, so as to cooperate with the first link 310 to form a collinear locking or non-collinear unlocking state.

[0069] The third pivot 350 is located at the hinge between the second connector 200 and the first connector 100, and can form the main rotation center between the temple and the frame, so that the second connector 200 can be unfolded or folded around the end of the first connector 100.

[0070] For example, the first rotating shaft 330 passes through the shaft hole at the end of the first connecting rod 310 and the shaft hole on the sliding member of the adjusting mechanism 400, and is prevented from axial movement by a shaft end limit (such as a snap ring, riveting, or thread). The first connecting rod 310 can swing freely about the first rotating shaft 330 relative to the sliding member of the adjusting mechanism 400, and the swing angle range is determined by the movement limit of the mechanism.

[0071] The second rotating shaft 340 passes through the shaft hole at the end of the second connecting rod 320 and the shaft hole on the second connecting member 200, and also adopts an axial limiting structure. The second connecting rod 320 can swing freely about the second rotating shaft 340 relative to the second connecting member 200, and the rotation of the second connecting member 200 forces the second connecting rod 320 to move.

[0072] The third pivot 350 passes through the shaft hole at the end of the second connector 200 and the shaft hole at the end of the first connector 100, and is fixed by axial limiting. The second connector 200 can rotate freely relative to the first connector 100 around the third pivot 350, and the rotation angle corresponds to the folding and unfolding of the temple.

[0073] The first rotating shaft 330 is located on the sliding member of the adjusting mechanism 400, and its position changes as the sliding member moves. The second rotating shaft 340 is located on the second connecting member 200, and its distance from the third rotating shaft 350 is fixed. The third rotating shaft 350 is located at the end of the first connecting member 100, serving as a fixed hinge point. The axes of the three rotating shafts are parallel to each other, ensuring that all movements are coplanar.

[0074] In one possible implementation, see Figure 1 , Figure 2 , Figure 4 and Figure 5 The adjusting mechanism 400 includes a sliding member 410, an elastic member 420, and a limiting member 430. The sliding member 410 is slidably connected to the first connecting member 100. The limiting member 430 is installed at one end of the first connecting member 100 near the second connecting member 200. One end of the elastic member 420 along the elastic deformation direction is connected to the sliding member 410, and the other end abuts against the limiting member 430.

[0075] The elastic element 420 is a compression spring, and the limiting element 430 is a stop fixed on the first connecting element 100; the sliding element 410 has a tendency to move towards the second connecting element 200 under the elastic force of the compression spring.

[0076] In this embodiment, the slider 410, as the core moving component of the adjustment mechanism 400, is responsible for converting external force into linear displacement and transmitting the displacement to the locking mechanism 300.

[0077] The sliding member 410 is block-shaped or plate-shaped and slides in cooperation with the groove or guide rail on the first connecting member 100. The sliding member 410 has a connecting part (e.g., a hinge seat) on the side facing the locking mechanism 300 for rotatably connecting with the first connecting rod 310 via the first rotating shaft 330. The bottom or side of the sliding member 410 may be provided with a spring piece (for multi-level positioning) that cooperates with the stepped structure.

[0078] The slider 410 slides linearly along the length of the first connector 100, causing the first link 310 to move, thereby changing the angle between the first link 310 and the second link 320, and realizing fine adjustment of the angle of the second connector 200. At the same time, the slider 410 provides support and compression surface for the elastic member 420.

[0079] The elastic element 420 provides an elastic force to maintain the stability of the slider 410 in the working area and to provide a reset tendency or holding force after the external force is removed.

[0080] Furthermore, the working area is determined by the upper limit structure of the movement path of the slider 410. Specifically:

[0081] Right boundary (side of the second connector): defined by the limiting surface of the first step 110. Under normal working conditions, the elastic element 420 pushes the slider 410 to the right until the spring piece 130 abuts against the limiting surface of the first step 110. This position is the initial positioning point of the slider 410 in the working area.

[0082] Left boundary (near the end): defined by the limiting surface of the second step 120. When the slider 410 moves to the extreme position to the left under abnormal or excessive external force, the spring piece 130 abuts against the second step 120 to form a hard limit. This position is the extreme end point of the slider 410 in the working area.

[0083] In the area between these two boundaries, the slider 410 can move freely back and forth, and this area is defined as the working area.

[0084] The elastic element 420 is preferably a compression spring (such as a helical spring or wave spring), but other elastic materials (such as rubber or sheet metal) may also be used. The axial direction of the elastic element 420 is consistent with the moving direction of the sliding element 410.

[0085] One end of the elastic element 420 is connected to (or abuts against) the sliding element 410, and the other end abuts against the limiting element 430. When the sliding element 410 is pushed by an external force towards the second connecting element 200, the elastic element 420 is compressed, storing elastic potential energy; when the external force is removed, the elastic element 420 releases its potential energy, pushing the sliding element 410 back to its original position. Under normal operating conditions, the preload of the elastic element 420 causes the sliding element 410 to abut against the limiting element 430 or the stepped structure, preventing accidental slippage due to vibration or gravity.

[0086] The limiting member 430 serves as the fixed support end of the elastic member 420, and also limits the initial position or maximum range of movement of the sliding member 410.

[0087] The limiting member 430 is a rigid component (such as a stop, pin, or boss) and is fixedly installed on the end of the first connecting member 100 near the second connecting member 200. The surface of the limiting member 430 facing the sliding member 410 can serve as the abutment surface of the elastic member 420.

[0088] The limiting member 430 provides support against the reaction force when the elastic member 420 is compressed. When the sliding member 410 moves towards the second connecting member 200 under the action of the elastic member 420, the limiting member 430 indirectly limits it through the elastic member 420, preventing the sliding member 410 from moving excessively and leaving the working area. At the same time, the limiting member 430 also serves as a reference point for the adjusting mechanism 400.

[0089] The sliding element 410, the elastic element 420, and the limiting element 430 together constitute an elastic reset system. The sliding element 410 is the controlled element, the elastic element 420 is the energy storage element, and the limiting element 430 is the fixed reference point.

[0090] When the user pushes the slider 410 to adjust the angle, the elastic element 420 is compressed. After the adjustment is completed, the elastic force of the elastic element 420 presses the slider 410 against the stepped structure or the limiting element 430 to achieve self-holding.

[0091] When a complete reset is required (e.g., to return to the minimum angle), the elastic force of the elastic element 420 automatically pushes the sliding element 410 back to its initial position (against the limit element 430 or the soft limit of the stepped structure).

[0092] For example, the slider 410 is slidably connected to the first connector 100. Specifically, a groove (or guide rail) is formed on the first connector 100 along its length, and the slider 410 is placed in the groove, forming a sliding pair. The slider 410 can move linearly along the groove, but its other degrees of freedom (such as vertical, horizontal, and rotational movement) are restricted by the sidewalls and bottom wall of the groove. The length of the groove determines the maximum stroke of the slider 410.

[0093] One end of the elastic element 420 along its elastic deformation direction is connected to the sliding element 410. The connection method can be one of the following:

[0094] Contact: The end face of the elastic element 420 directly contacts the corresponding face of the sliding element 410, without fixed connection, and the contact is maintained by compressive force.

[0095] Sleeve connection: The sliding member 410 is provided with a protrusion or groove, and the elastic member 420 is sleeved on the protrusion or embedded in the groove.

[0096] Fixed connection: The elastic element 420 and the sliding element 410 are fixed by welding, bonding or snap fastening.

[0097] Preferably, the connection method is abutment or socket to simplify assembly.

[0098] The end of the elastic member 420 away from the sliding member 410 abuts against the limiting member 430. The limiting member 430 is fixedly installed on the end of the first connecting member 100 near the second connecting member 200. The limiting member 430 can be a boss integrally formed on the first connecting member 100, or it can be an independent part (such as a stop or pin) that is assembled thereon. This end face of the elastic member 420 contacts the abutting surface of the limiting member 430. When the sliding member 410 moves away from the second connecting member 200, the elastic member 420 is compressed between the sliding member 410 and the limiting member 430.

[0099] The slider 410 is rotatably connected to the first connecting rod 310 via a first rotating shaft 330. Specifically, the slider 410 has a hinge seat, and the first rotating shaft 330 passes through the hinge seat and the end shaft hole of the first connecting rod 310, enabling relative oscillation between the two. This connection converts the linear motion of the slider 410 into the oscillation of the first connecting rod 310, thereby driving the locking mechanism 300.

[0100] When the user needs to adjust the opening angle of the temples, they directly push the slider 410 of the adjustment mechanism 400. The applied force overcomes the elastic force of the elastic element 420, causing the slider 410 to slide away from the second connector 200 along the length of the first connector 100. Simultaneously, the elastic element 420 is gradually compressed, storing energy as elastic potential energy. The linear motion of the slider 410 is transmitted to the first link 310 via the first rotating shaft 330, causing the first link 310 to deflect at an angle, thereby changing the angle between the first link 310 and the second link 320. This angle change is transmitted to the second connector 200 via the second rotating shaft 340, causing the second connector 200 to rotate slightly around the third rotating shaft 350, ultimately achieving precise adjustment of the temple locking angle. Throughout the adjustment process, because the locking mechanism 300 remains in a dead-point locked state, the adjusted angle is stably maintained and will not rebound when the external force is removed.

[0101] Based on the above structure, when the slider 410 moves along the length of the first connector 100 under external adjustment, it will simultaneously compress or stretch the elastic member 420 disposed between the slider and the limiting member 430, causing the elastic member 420 to produce corresponding elastic deformation and continuously provide reverse restoring force, so that the slider maintains a certain pre-tight state after adjustment; at the same time, the limiting member 430 constrains the maximum displacement of the slider 410, preventing the slider 410 from dislodging or overtraveling under repeated opening and closing or external impact.

[0102] Since the sliding member 410 is always guided and constrained on the first connecting member 100, and the elastic member 420 provides continuous return and pressing action, the locking mechanism 300 can maintain good axial stability and repeatability during movement. When the second connecting member 200 rotates to the predetermined unfolding angle, the relevant linkage assembly can be adjusted to the corresponding position and reliably locked under the action of the sliding member 410.

[0103] Therefore, the adjustment mechanism 400 can not only achieve continuous or segmented adjustment of the locking position, but also reduce the probability of jamming during the adjustment process through the synergistic effect of elastic pre-tightening and stroke limit, reduce position drift caused by tolerance accumulation, and improve the stability of the temples after unfolding and the overall assembly consistency. This is conducive to maintaining good reliability and structural compactness of smart glasses in long-term wear and frequent folding scenarios.

[0104] Based on the foregoing embodiments, see Figure 1 , Figure 3 Furthermore, it also includes a tail-pressing mechanism 500, which is disposed at the connection between the second link 320 and the second connector 200. The tail-pressing mechanism 500 is used to abut against the second link 320 during the bending process to break the collinear structure of the first link 310 and the second link 320.

[0105] In this implementation, the tail pressing mechanism 500 acts as the actuator for dead-point unlocking, actively disrupting the collinearity during the bending process.

[0106] The tail-pressing mechanism 500 can be a protrusion, a stop, a pin, a bevel, or an arc surface, and is fixedly installed near the connection between the second connecting rod 320 and the second connecting member 200. The specific location could be:

[0107] It is fixed inside the second connector 200, near the second rotating shaft 340.

[0108] It is fixed to the temple body and located at the end of the swing trajectory of the second link 320.

[0109] It is integrally formed at the corresponding position of the second connector 200 or the temple.

[0110] The surface of the tail-pressing mechanism 500 that contacts the second connecting rod 320 can be designed as an arc or a slope to reduce friction and impact.

[0111] In the normal unfolded and locked state, the tail-pressing mechanism 500 and the second link 320 do not contact or only slightly contact each other, which does not affect the dead-point locking of the locking mechanism 300. When the user bends the temple inward, the tail-pressing mechanism 500 abuts against the second link 320, applying a force deviating from the dead-point direction, causing the hinge point of the first link 310 and the second link 320 to shift, breaking the collinear state, thereby unlocking.

[0112] The contact surface of the tail-pressing mechanism 500 and the corresponding surface (which can be the side, end face or a specific protrusion) of the second link 320 form a kinematic pair.

[0113] When the second link 320 rotates to a certain angle with the second connecting member 200, the two come into contact. The contact point generates a torque relative to the lever arm of the second rotating shaft 340. The direction of this torque is opposite to the direction of the balancing force that maintains the dead point, thereby breaking the dead point.

[0114] In the dead state, the first link 310 and the second link 320 are collinear, and external forces cannot generate a torque that causes the hinge point to rotate through the second connector 200.

[0115] The tail-pressing mechanism 500 acts directly on the non-collinear part of the second link 320 (e.g., a position that is a certain distance away from the hinge point), generating an additional torque. This torque causes the second link 320 to rotate slightly relative to the first link 310, the hinge point moves away from the collinear straight line, the system exits the dead point region, and then the bending force applied by the user can drive the mechanism to continue moving.

[0116] Based on the foregoing embodiments, see Figure 1 , Figure 2 , Figure 4 and Figure 5 Furthermore, the bottom of the slider 410 is provided with a spring piece 130, and the first connector 100 is provided with a first step 110. The first step 110 is located at the end of the first connector 100 near the second connector 200. Under the action of external force, the slider 410 drives the spring piece 130 to slide along the guide surface of the first step 110, and continues to move along the length direction of the first connector 100 past the first step 110.

[0117] Furthermore, the first connector 100 is also provided with a second step 120, which is located at the end of the first connector 100 away from the second connector 200. The second step 120 is disposed at the end of the first connector 100 and is used to abut against the spring piece 130 when the slider 410 moves excessively, so as to achieve end limit.

[0118] In this embodiment, the spring piece 130 is an elastic element fixed to the bottom of the slider 410, and its free end can elastically deform in a direction perpendicular to the moving direction of the slider 410. The spring piece 130 is made of metal or engineering plastic and has a certain stiffness and elastic limit, which can withstand repeated step-by-step operations without plastic deformation or breakage.

[0119] The spring piece 130 engages with the first step 110, and slides along the guide surface and crosses the step when bending, allowing the slider 410 to continue moving.

[0120] The spring 130 cooperates with the second step 120 and abuts against the slider 410 when it moves excessively, thereby achieving end-point limiting.

[0121] The side of the spring 130 facing the first step 110 can be designed as a slope or an arc to reduce resistance when stepping over; the side facing the second step 120 can be designed as a vertical surface to enhance the reliability of the end limit.

[0122] The deformation of the spring 130 is positively correlated with the magnitude of the force required during the step-up process. The larger the deformation, the greater the force required during the step-up process. At the same time, the fatigue life of the spring 130 affects the overall service life and durability of the structure.

[0123] The first step 110 is located at the end of the first connector 100 near the second connector 200. It is the positioning reference of the slider 410 in normal working condition, and also the starting point for the spring piece 130 to jump over the step when bending.

[0124] The first step 110 serves as a guide surface, which can be a slope, an arc surface, or a rounded transition surface, to guide the spring piece 130 to slide and rise smoothly under force. The angle and height of the guide surface determine the magnitude of the external force required to jump the step.

[0125] In the normal wearing state, the spring piece 130 is located on the side of the first step 110 near the second connector 200. The first step 110 cooperates with the spring piece 130 to prevent the slider 410 from being pushed to the left out of the working area by the elastic member 420. When bent, the spring piece 130 skips the step under the guidance of the guide surface, allowing the slider 410 to move to the left.

[0126] The second step 120 is located at the end of the first connector 100 away from the second connector 200, and is the end hard limiting structure of the slider 410.

[0127] The second step 120 is used to abut against the spring piece 130 when the slider 410 moves excessively to the left, forming a physical stop.

[0128] The second step 120 has a vertical or near-vertical limiting surface, with a height sufficient to block the spring 130 or the body of the slider 410. The second step 120 can be integrally formed with the first connector 100, or it can be a boss or stop formed by subsequent processing.

[0129] The second step 120 can prevent the slider 410 from coming off the end of the first connector 100 in the event of abnormal external force (such as excessive bending by the user) or failure of the elastic element 420, thus protecting the integrity of the entire hinge mechanism.

[0130] For example, the spring piece 130 is fixedly mounted to the bottom of the slider 410. The fixing method can be that the spring piece 130 and the slider 410 are integrally injection molded, or the separately manufactured spring piece 130 can be fixed to a groove in the bottom of the slider 410 using screws, rivets, or clips (applicable to metal or hybrid structures). The free end of the spring piece 130 faces the direction of the first step 110 and the second step 120 (i.e., extending to the left) so that it contacts the steps when the slider 410 moves.

[0131] In normal operation, the slider 410 is in its initial position, and the spring piece 130 is located on the side of the first step 110 near the second connector 200. The thrust of the elastic member 420 pushes the slider 410 to the right, causing the spring piece 130 to press against the right side of the first step 110, preventing the slider 410 from moving to the left, thereby maintaining the stability of the locking angle of the temple.

[0132] When the user bends the temple inward, the locking mechanism 300 applies a leftward pulling force to the slider 410 via the first link 310. The slider 410 moves the spring 130 to the left, and the left side of the spring 130 contacts the guide surface of the first step 110. As the pulling force increases, the normal pressure generated by the guide surface is decomposed into two components: horizontal and vertical. The vertical component causes the free end of the spring 130 to elastically deform upward. When the deformation of the spring 130 is sufficient to make its lowest point higher than the highest point of the first step 110, the spring 130 crosses the first step 110 and falls into the area to the left of the first step 110. At this point, the slider 410 gains the freedom to continue moving to the left, providing the necessary stroke for bending.

[0133] During normal bending operations, the sliding member 410 typically does not reach the position of the second step 120. However, under abnormal circumstances (such as excessive bending by the user, failure of the elastic member 420 causing the sliding member 410 to become uncontrollable, or breakage of other components causing the sliding member 410 to slide freely), the sliding member 410 may continue to move to the left to its limit position. At this time, the left side (or free end face) of the spring piece 130 is in rigid contact with the right side limiting surface of the second step 120. Since the second step 120 is a rigid structure fixed to the end of the first connecting member 100, the spring piece 130 or the sliding member 410 cannot be further compressed or pushed beyond it, and the sliding member 410 is forcibly stopped, thereby preventing it from detaching from the first connecting member 100.

[0134] The first step 110 and the second step 120 are arranged sequentially along the length of the first connector 100, with the second step 120 located at the end. The first step 110 is located at the right end near the second connector 200, and the second step 120 is located at the left end away from the second connector 200. The axial distance D between them defines the maximum movable stroke of the slider 410 from its normal operating position to its end limit position. The design value of this stroke should be greater than the sliding amount required for normal bending (i.e., the displacement required for the spring piece 130 to complete folding after passing the first step 110), while leaving a certain safety margin. The heights of the two steps can be the same or different, but both must be greater than the thickness of the spring piece 130.

[0135] The elastic element 420 consistently pushes the slider 410 to the right, while the spring piece 130 is blocked by the first step 110 during normal operation. This creates a force balance, with the elastic element 420 constantly pushing the slider 410 towards the second connector 200. This pushing force is transmitted through the slider 410 to the bottom spring piece 130, pressing it firmly against the right side of the first step 110. This maintains the slider 410's stable position within the working area, preventing accidental movement without external force. When bending, the leftward pulling force provided by the locking mechanism 300 must simultaneously overcome the pushing force of the elastic element 420 and the deformation force required for the spring piece 130 to cross the first step 110. This dual-resistance design ensures that the slider 410 only moves when the user actively bends it, preventing accidental slippage.

[0136] The timing sequence of the various coordination relationships during the bending action is as follows: First, the tail-pressing mechanism 500 abuts against the second link 320, breaking the collinear dead point of the first link 310 and the second link 320. Subsequently, the locking mechanism 300 applies a leftward pulling force to the slider 410, and the spring piece 130 slides along the guide surface of the first step 110 and crosses the step. After crossing the step, the slider 410 continues to move to the left, completing the entire stroke required for bending. During this process, the second step 120, as a safety end limit, is usually not triggered. When reset is required, the elastic element 420 pushes the slider 410 to the right, and the spring piece 130 automatically resets to the right side of the first step 110 under the guidance of the guide surface of the first step 110, restoring normal working state.

[0137] Based on the foregoing embodiments, see Figure 1 , Figure 2 , Figure 4 and Figure 5 Furthermore, the second step 120 is a sloping structure or a rounded corner transition structure.

[0138] In this embodiment, when the slider 410 moves excessively to the left, the second step 120 abuts against the spring piece 130, forming a physical stop to prevent the slider 410 from sliding out from the end of the first connector 100. This function can effectively protect the integrity of the hinge mechanism and prevent parts from falling or causing secondary damage in abnormal situations such as excessive bending by the user, failure of the elastic element 420, or extreme impact.

[0139] When the spring 130 resets to the right, the inclined or rounded corner structure provides a smooth lifting guide surface for the spring 130. The free end of the spring 130 gradually rises along the inclined or rounded curved surface, and after passing the top of the second step 120, continues to move to the right to the initial position. This function ensures the smoothness of the reset action and avoids the situation where the end of the spring 130 gets stuck at the corner of the step and cannot reset.

[0140] The second step 120 can adopt either a sloped structure or a rounded corner transition structure. Both are functionally equivalent, and the choice can be made according to the processing technology and design requirements.

[0141] When the second step 120 adopts a sloped structure, it has a plane inclined relative to the length direction of the first connector 100. This slope faces the direction of the first step 110 (i.e., towards the direction from which the slider 410 returns to its original position), and the angle α between the slope and the length direction of the first connector 100 is typically 30°-60°. The height H of the slope (i.e., the vertical drop of the step) should be greater than the thickness of the spring piece 130 to ensure effective blocking of the spring piece 130. The top of the slope and the upper surface of the first connector 100 can be smoothly transitioned with small rounded corners to avoid sharp edges.

[0142] When the second step 120 adopts a rounded transition structure, its outline is a curved arc surface. The radius R of the arc is typically 1-3 times the thickness of the spring piece 130, for example, 0.5mm-3mm. The rounded structure is simpler to manufacture (it can be directly machined using forming tools or molds), has less stress concentration, and provides smooth guidance regardless of the direction of contact during the reciprocating motion of the spring piece 130.

[0143] The angle or radius of the second step 120 determines the magnitude of the reset resistance. A smaller angle or a larger radius results in smoother reset, but may weaken the limiting effect; a larger angle or a smaller radius results in more reliable limiting, but increases the reset resistance. A balance must be struck between the two in actual design.

[0144] Building upon the aforementioned embodiments, both the first connector 100 and the second connector 200 are further categorized as connecting rod structures. The first connector 100 serves as a rod-shaped support near the frame, and the second connector 200 serves as a rod-shaped support near the temple. The two connectors form a hinged relationship through end-to-end rotational engagement, jointly providing a mounting and force-transmitting foundation for the locking and adjustment mechanisms. Functionally, this connecting rod structure facilitates the integration of relative rotation, locking, and position adjustment between the frame and temple within a smaller space, thereby reducing the dispersion of parts in the hinge area and improving assembly consistency.

[0145] In one possible embodiment, the connecting rod structure can be a solid metal rod, a hollow metal rod, or a plastic-coated metal frame rod, or it can be a flat rod, a round rod, or an irregularly shaped reinforcing rod. Exemplary materials include aluminum alloy, stainless steel, titanium alloy, magnesium alloy, engineering plastics, or metal-plastic composite materials to balance strength, lightweight, and wear resistance. The cross-section of the connecting rod can be circular, elliptical, rectangular, or an irregularly shaped cross-section with rounded corners. Its length is typically several times greater than its thickness or diameter to meet the requirements for rotational support, sliding guidance, and arrangement with other mechanisms. In terms of specific dimensions, the design can be matched to the width of the smart glasses frame and the installation space at the base of the temples; for example, the rod thickness or diameter can range from several millimeters to over ten millimeters, and the length can range from several millimeters to tens of millimeters. It should be understood that the above examples are merely illustrative and not limiting.

[0146] This application also proposes a smart glasses, comprising:

[0147] The frame, temples, and self-locking structure provided above; the first connector 100 is fixed to the frame, and the second connector 200 is fixedly connected to the temples.

[0148] By fixing the first connector 100 to the frame and the second connector 200 to the temple, a stable mounting base is formed between the frame and the temple. Combined with a self-locking structure, the temple automatically maintains its position when rotated relative to the frame to a predetermined opening angle, thereby improving opening stability and reducing swaying and loosening. Simultaneously, the locking and adjustment mechanisms within the self-locking structure allow for both opening / closing positioning and adaptive adjustment within a limited space, enabling the smart glasses to better adapt to different head widths, thus improving wearing comfort and ease of one-handed operation. Therefore, this structure also facilitates a compact arrangement of the hinge area, reserving space for wiring, sensors, or flexible circuits, and improving overall assembly consistency and long-term reliability.

[0149] See Figure 6 This application also proposes a self-locking adjustment method, applied to a self-locking structure including the above-mentioned structure, comprising:

[0150] S301, drive the second connector 200 to rotate relative to the first connector 100.

[0151] The hinge opens and closes, converting the external force applied by the user into the rotational motion of the second connector 200, providing initial conditions for subsequent self-locking and adjustment.

[0152] The user holds the temple and bends it outwards (away from the frame). The temple causes the second connector 200 to rotate relative to the first connector 100 around the third pivot 350. The rotation angle gradually increases from 0° (folded state).

[0153] This step is manual, requiring no tools or additional switches. The speed and force of rotation are naturally controlled by the user. It's simple and direct, conforming to the user's usual habits when using glasses, with no learning curve.

[0154] S302, when the second connecting member 200 rotates to a predetermined angle, the current rotation position is automatically locked by the locking mechanism 300.

[0155] The system features an automated "lock-in" function, which allows the temples to automatically maintain a stable opening angle after being fully extended, without requiring continuous force from the user.

[0156] When the second connector 200 rotates to the pre-designed unfolded position angle (e.g., 95° or 105°), the first link 310 and the second link 320 in the locking mechanism 300 form a collinear structure (dead point). At this time, any external force attempting to fold the temples cannot drive the linkage mechanism to move in the opposite direction, and the system automatically enters the locked state. The user can release their hands, and the temples will not droop due to gravity or elasticity.

[0157] The locking is purely mechanical and automatically triggered, without relying on electronic sensors or additional latches. The reliability of the locking is guaranteed by geometric relationships, not friction or spring force.

[0158] Users simply unfold the temples to their desired position when wearing the glasses, without needing to perform any locking operation, greatly improving convenience. At the same time, the dead-point self-locking mechanism provides excellent retention, preventing accidental folding even under significant impact.

[0159] S303, the adjusting mechanism 400 drives the locking mechanism 300 to move along the length direction of the first connecting member 100 to adjust the angle of the second connecting member 200 in the locked state.

[0160] While maintaining the locking mechanism, the opening angle of the temples can be finely adjusted to accommodate different head widths or wearing preferences of users.

[0161] The user manually pushes the slider 410 of the adjustment mechanism 400 to move along the length of the first connecting member 100 (usually in the back-and-forth direction). The slider 410 drives the first link 310 to move via the first pivot 330, changing the geometric relationship between the first link 310 and the second link 320, thereby causing a slight change in the angle of the second connecting member 200. Since the locking mechanism 300 is still near the dead point (not completely out of the collinear range), the system still maintains self-locking, only the balance position has shifted.

[0162] No unlocking is required during adjustment; it is considered "adjustment while locked". The adjustment range is typically designed to be ±5° to ±10°, and the step size can be stepless (in conjunction with elastic damping) or multi-step (in conjunction with stepped-spring drop feedback).

[0163] Users can fine-tune the temple opening width in real time after wearing the glasses, based on their actual tightness, to achieve optimal comfort without having to repeatedly take off and put on the glasses for adjustments.

[0164] S304, when bending is required, the temple is bent inward, so that the spring piece 130 at the bottom of the sliding member 410 passes the second step 120, and the tail pressing mechanism 500 breaks the collinearity of the first link 310 and the second link 320, thereby realizing bending.

[0165] It provides a controllable unlocking method, allowing the temples to fold smoothly from the self-locking state while ensuring that they will not be accidentally unlocked during normal wear.

[0166] The user forcefully pulls the temples inward (towards the center of the frame). At this moment, two coordinated actions occur:

[0167] The rotation of the second connector 200 pulls the slider 410 to the left via a linkage mechanism. The spring at the bottom of the slider 410 contacts the inclined surface of the second step 120. Under a sufficiently large pulling force, the spring undergoes elastic deformation and passes over the second step 120, allowing the slider 410 to continue moving to the left and providing the space required for bending.

[0168] Simultaneously, the pressure mechanism 500, located at the connection between the second link 320 and the second connector 200, abuts against the second link 320, applying an additional torque to force the hinge point of the first link 310 and the second link 320 to deviate from the collinear line, thereby breaking the dead point state. Once the dead point is broken, the bending force applied by the user can continue to drive the linkage mechanism to move, and the temples fold smoothly.

[0169] The two actions work together without interfering with each other, ensuring reliable unlocking of the dead-point self-locking mechanism. The force required for unlocking is significantly greater than the disturbance load during normal wear, preventing accidental folding.

[0170] Users can feel the "breakthrough" sensation when unlocking the glasses with just one continuous inward bend, followed by the smooth folding of the temples. The operation is natural and intuitive, requiring no additional buttons.

[0171] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0172] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0173] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0174] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking structure, characterized in that, include: The first connector is used to attach to the frame; The second connector has one end rotatably connected to the end of the first connector, and the other end is used to connect to the temple of the mirror. A locking mechanism is disposed between the first connector and the second connector, and configured to lock the rotation of the second connector relative to the first connector when the second connector rotates to a predetermined angle; An adjustment mechanism is slidably engaged with the first connecting member and drivenly connected to the locking mechanism; the adjustment mechanism is used to drive the locking mechanism to move along the length direction of the first connecting member, so as to adjust the locking angle corresponding to the second connecting member when locked.

2. The self-locking structure according to claim 1, characterized in that, The locking mechanism includes a first link and a second link. One end of the first link is rotatably connected to the adjusting mechanism, and the other end is hinged to the end of the second link. The end of the second link away from the first link is rotatably connected to the second connector; When the second connector rotates to a predetermined angle, the first link and the second link form a collinear structure to lock the rotation of the second connector relative to the first connector.

3. The self-locking structure according to claim 2, characterized in that, The first connecting rod is rotatably connected to the adjusting mechanism via a first rotating shaft; And / or, the second link and the second connector are rotatably connected via a second pivot; And / or, the second connector is rotatably connected to the first connector via a third pivot.

4. The self-locking structure according to claim 2, characterized in that, The adjusting mechanism includes a sliding member, an elastic member, and a limiting member. The sliding member is slidably connected to the first connecting member. The limiting member is installed at one end of the first connecting member near the second connecting member. One end of the elastic member along the elastic deformation direction is connected to the sliding member, and the other end abuts against the limiting member.

5. The self-locking structure according to claim 4, characterized in that, It also includes a tail-pressing mechanism, which is disposed at the connection between the second connecting rod and the second connecting member. The tail-pressing mechanism is used to abut against the second connecting rod during bending to break the collinear structure of the first connecting rod and the second connecting rod.

6. The self-locking structure according to claim 5, characterized in that, The bottom of the slider is provided with a spring piece, and the first connector is provided with a first step, which is located at the end of the first connector closer to the second connector. Under the action of external force, the sliding member causes the spring piece to slide along the guide surface of the first step, and then moves past the first step along the length direction of the first connecting member.

7. The self-locking structure according to claim 6, characterized in that, The first connector is also provided with a second step, which is located at the end of the first connector away from the second connector; The second step is disposed at the end of the first connector and is used to abut against the spring piece when the slider moves excessively, so as to achieve end limit.

8. The self-locking structure according to claim 7, characterized in that, The second step is a sloping structure or a rounded corner transition structure.

9. The self-locking structure according to claim 1, characterized in that, Both the first connector and the second connector are connecting rod structures.

10. A type of smart glasses, characterized in that, include: The frame, temples, and the self-locking structure as described in any one of claims 1 to 9; The first connector is fixed to the frame, and the second connector is fixedly connected to the temple.

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