Visual aid wearing device

Abstract

The present application relates to the field of visual aid device, and particularly relates to a visual aid wearing device, which comprises two ear hanging parts, each of which comprises a temple and a connecting body connected with the temple; a visual aid part is used to be worn in front of the eyes of a user, so that the width direction of the visual aid part is configured to correspond to the face width direction of the user in the wearing state of the user; the lower end of the connecting body is installed on the visual aid part, and the upper end is used to movably install the temple on the visual aid part, and the connecting body is configured to be slidably connected with the visual aid part along an arc-shaped track with the position of the lower end of the connecting body installed on the visual aid part as the center, so that the upper end of the connecting body drives the temple to produce a slidable displacement in the width direction of the visual aid part. The head width of different users or the frame width of different internally worn glasses is adapted, and the problem of the stability of the adjusting structure of the existing glasses with adjustable eye width decreasing after multiple uses is solved.

Description

Technical Field

[0001] This invention relates to the field of visual aids technology, and in particular to a visual aid wearable device. Background Technology

[0002] The stability and comfort of wearing eyeglasses are of paramount importance. Because users have different head shapes and circumferences, fixed-size eyeglasses are difficult to achieve a universal fit; therefore, enabling eyeglasses to adjust their size is an important area for improvement.

[0003] Currently, some glasses with adjustable temple widths have appeared on the market, but due to unreasonable adjustment structure settings, their stability is weak after repeated use. Summary of the Invention

[0004] To address the above problems, the present invention provides a visual aid wearing device.

[0005] The present invention provides a visual aid wearing device, comprising: two ear hooks, each ear hook including a temple and a connector connected to the temple; a visual aid for wearing in front of the user's eyes; defined as follows: in the user's wearing state, the width direction of the visual aid is configured to correspond to the width direction of the user's face; the lower end of the connector is mounted on the visual aid, and the upper end is used to movably mount the temple to the visual aid, and the connector is configured to slide along an arc-shaped trajectory with its lower end mounted on the visual aid as the center, so that the upper end of the connector drives the temple to produce a slidable displacement in the width direction of the visual aid.

[0006] Preferably, the lower end of the connector is fixed to the visual aid, and an elastic arm is formed between the upper and lower ends of the connector; when the upper end of the connector is subjected to external force, the elastic arm undergoes elastic deformation, so that the upper end of the connector slides along the arc trajectory to adjust the wearing distance between the two temples.

[0007] Preferably, one of the connector and the visual aid has a guide groove extending along the arcuate trajectory, and the other has a guide block that slides with the guide groove along the arcuate trajectory. When the upper end of the connector slides along the arcuate trajectory until the guide block contacts the end of the guide groove, the guide block abuts against the guide groove, providing a starting and ending position limit for the upper end of the connector to slide along the arcuate trajectory.

[0008] Preferably, one of the connector and the visual aid is recessed with positioning female portions spaced apart along the arcuate trajectory, and the other is protruding with positioning male portions. When the positioning male portion is located at either of the positioning female portions, it is elastically connected to the positioning female portion to prevent the connector and the visual aid from sliding relative to each other along the arcuate trajectory. Under the action of external force, the upper end of the connector slides relative to the visual aid along the arcuate trajectory, and drives the positioning male portion to slide from one of the positioning female portions to the other positioning female portion.

[0009] Preferably, the guide groove is a suspended frame structure, the positioning female part is disposed on the inner wall of the guide groove, and is arranged along the arc-shaped trajectory direction to form a toothed mating surface or a corrugated mating surface, and the positioning male part is disposed on the outer side of the guide block; during the sliding process of the upper end of the connecting body along the arc-shaped trajectory direction under the action of external force, the protrusion of the toothed mating surface or the corrugated mating surface is squeezed by the positioning male part disposed on the guide block, causing the side wall of the corresponding part of the guide groove to undergo elastic deformation to avoid the positioning male part; when the positioning male part on the guide block slides to align with the recess of the toothed mating surface or the corrugated mating surface, under the action of the elastic restoring force of the side wall of the guide groove, the positioning male part is inserted into the recess to form the positioning fit.

[0010] Preferably, the connector is further provided with a deformation groove on one side of the guide groove. The deformation groove is located close to the side wall where the positioning mother is located, providing elastic deformation space for the side wall of the guide groove where the positioning mother is located.

[0011] Preferably, the guide block is pre-installed in the guide groove via the positioning male and female parts to form an assembly; the visual aid has a receiving groove, and the visual aid has an opening in the width direction that communicates with the receiving groove; the part of the connector with the guide groove is movably inserted into the receiving groove along the opening so that the guide block is located in the receiving groove; the visual aid also has a mounting hole communicating with the receiving groove, the mounting hole being offset from the opening of the receiving groove; the visual aid wearing device also includes an intermediate part, the intermediate part being inserted into the receiving groove along the mounting hole and fixing the guide block in the receiving groove.

[0012] Preferably, the hardness of the material used to make the guide block is lower than the hardness of the material used to make the connector having the guide groove portion.

[0013] Preferably, the connector is further provided with a guide protrusion at the end of the portion having the guide groove. The guide protrusion is configured to be inserted into the receiving groove. The receiving groove is further provided with a guide slide groove at the end away from the groove opening. The guide protrusion is installed along the guide slide groove so that the portion of the connector having the guide groove is positioned and installed in the receiving groove.

[0014] Preferably, at least one of the connector and the visual aid is provided with a guide plate extending along the arcuate trajectory, and the other is provided with a guide wall that is movably fitted to the surface of the guide plate along the arcuate trajectory; and as the upper end of the connector slides away from the visual aid along the arcuate trajectory under the action of external force, the guide plate and the guide wall maintain a surface fit, limiting the generation of a relative gap between the connector and the visual aid.

[0015] Preferably, the connector is a pile head accessory, the visual aid is a frame or lens and a combination of the frame, the lower end of the pile head accessory is provided with a buckle, the frame is provided with a slot that cooperates with the buckle, and the lower end of the pile head accessory is fixed to the frame by the buckle and the slot.

[0016] Preferably, the frame and the head fitting are connected to form a cover frame for wearing outside the eyeglass frame; as the upper end of the connector slides away from the visual aid along the arc-shaped trajectory under the action of external force, the accommodating space inside the cover frame for fitting and accommodating the eyeglass frame gradually increases; as the upper end of the connector slides closer to the visual aid along the arc-shaped trajectory under the action of external force, the accommodating space inside the cover frame for fitting and accommodating the eyeglass frame gradually decreases.

[0017] Preferably, the unidirectional sliding range L of the guide block along the arc-shaped trajectory in the guide groove is: 0 < L ≤ 6 mm; And / or, the distance d between adjacent positioning mother parts is: 0.8mm≤d≤1.2mm.

[0018] Preferably, the distance S between the upper and lower ends of the connector is: 29mm≤S≤39mm; and / or, the sliding angle α of the upper end of the connector along the arc trajectory is: 2.2°≤α≤8.2°.

[0019] Compared with the prior art, the visual aid wearable device provided by the present invention has the following beneficial effects: 1. This invention provides a visual aid wearing device. By mounting the lower end of a connector to a visual aid and movably mounting the upper end to the temple, the connector is slidably connected to the visual aid along an arc-shaped trajectory centered on its lower end. This allows the temple to slide freely in the width direction of the visual aid. When the user pushes the temple, the upper end of the connector slides along the arc-shaped trajectory, causing the temple to shift in the width direction, thereby adjusting the wearing distance between the two temples. Because the lower end of the connector is firmly fixed at the mounting position of the visual aid, it provides a stable fulcrum for the entire adjustment structure, making the rotation of the upper end of the connector stable and controllable. This avoids unnecessary twisting or shaking during adjustment, thus solving the problem of decreased stability of the adjustment structure in existing adjustable glasses after repeated use.

[0020] 2. In this embodiment of the invention, the portion between the upper and lower ends of the connector is set as an elastic arm, and the lower end of the connector is fixedly installed on the visual aid. When an external force is applied to the upper end of the connector, the elastic arm undergoes elastic deformation, causing the upper end to slide along an arc trajectory. After the external force is removed, the elastic arm recovers its deformation, driving the upper end to reset. This achieves the replacement of sliding friction in traditional mechanical structures with the elastic deformation of the material itself, eliminating the problem of mechanical wear. Even after long-term use, the adjustment feel remains the same, further enhancing the stability of the adjustment structure.

[0021] 3. In this embodiment of the invention, a guide groove extending along an arc-shaped trajectory is provided on one of the connector and the visual aid, and a guide block that slides with the guide groove is provided on the other. When the guide block slides to contact the end of the guide groove, it forms an abutment fit, providing a starting position and an ending position limit for the sliding of the upper end of the connector. This forces the adjustment of the temple to be constrained on a preset arc-shaped trajectory, ensuring the high precision of the adjustment direction. The physical stops at both ends of the guide groove effectively prevent the user from over-adjusting. At the same time, the user can clearly perceive the starting point and ending point of the adjustment through touch, making the operation more intuitive and reassuring.

[0022] 4. In this embodiment of the invention, positioning female parts are arranged at intervals along an arc-shaped trajectory on one of the connector and the visual aid, and positioning male parts are provided on the other for elastic engagement. When no external force is applied, the positioning male part elastically engages with the currently positioned positioning female part to generate a holding force that prevents relative sliding. When sufficient external force is applied, the positioning male part can slide from one positioning female part to another, realizing gear switching. This allows users to select the most suitable width according to their head shape or the size of their inner glasses, achieving personalized and precise fitting. Furthermore, the elastic engagement between the positioning male part and the positioning female part provides sufficient holding force to ensure that the temples will not accidentally slide in the set position due to daily activities, thus improving wearing stability.

[0023] 5. In this embodiment of the invention, the guide groove is set as a suspended frame structure, the positioning female part is placed on the inner wall of the guide groove to form a toothed or corrugated mating surface, and the positioning male part is placed on the outside of the guide block. When the upper end of the connecting body slides, the positioning male part squeezes the protrusion of the positioning female part, causing the side wall of the guide groove to elastically deform to avoid it. When it slides to the recessed part, the side wall elastically recovers and the positioning male part is locked in to form a positioning fit. This achieves the goal of embedding all functional structures inside the guide groove, making any adjustment parts completely invisible from the outside, realizing a hidden design, and making the product look neat and beautiful. Moreover, the fit between the toothed or corrugated mating surface and the positioning male part can produce a clear and crisp "click" feeling and resistance change, providing users with a better adjustment experience.

[0024] 6. In this embodiment of the invention, a deformation groove is opened on one side of the guide groove on the connecting body, and the deformation groove is set close to the side wall where the positioning mother is set. This provides elastic deformation space for the side wall of the guide groove where the positioning mother is set. When the positioning male and positioning female are squeezed, the deformation groove allows the area to undergo a small amount of elastic bending or expansion towards the groove, absorbing the impact energy during the meshing process. This allows the positioning male to slide into or out of the stop position more smoothly, and ensures that each deformation can be restored after the force is removed, thereby achieving reversible gear adjustment.

[0025] 7. In this embodiment of the invention, the guide block and guide groove are pre-assembled into an assembly. A receiving groove and a communicating slot are provided in the visual aid. The part of the connector with the guide groove is inserted into the receiving groove along the slot. Then, the intermediate part is inserted through the mounting hole, which is offset from the slot direction, to fix the guide block in the receiving groove. The pre-assembled assembly of the guide block and guide groove is an independent functional unit with precise sliding and positioning fit inside, ensuring the reliability of the core adjustment function. Moreover, the offset setting of the mounting hole and the slot, combined with the holding and fixing of the intermediate part, forms a mechanical interlocking structure. Stable fixing can be achieved without any screws or glue, eliminating the risk of loosening due to vibration and ensuring long-term stability. When disassembly is required, the connector can be pulled out from the slot simply by pulling out the intermediate part, making the operation simple.

[0026] 8. In this embodiment of the invention, by setting the hardness of the material of the guide block to be lower than that of the material of the connector with the guide groove, the inner wall of the guide groove, which has high hardness, is difficult to process, and is difficult to replace, is protected. This effectively protects the key structure that determines the position accuracy, so that the position accuracy and positioning clarity of the entire wearing width adjustment mechanism can be maintained for a long time, and further solves the problem of weak stability after multiple adjustments of the wearing width between the temples.

[0027] 9. In this embodiment of the invention, the main body of the connecting body with the guide groove is accommodated in the receiving groove, which realizes the main bearing and lateral limiting; while the extended guide protrusion is inserted into the deeper guide groove, which provides additional, in-depth positioning and anti-torsional load capability, thereby ensuring that the connecting body inserted into the receiving groove will not tilt or swing unexpectedly when subjected to complex external forces, making its movement trajectory more stable during the sliding adjustment process.

[0028] 10. In this embodiment of the invention, the continuous surface contact between the guide plate and the guide wall forms a forced constraint. Regardless of the position of the connector, it effectively prevents the connector from tilting outwards due to torque, ensuring a tight fit between the connector and the visual aid, eliminating the wobbling sensation caused by gaps, and making the wearing experience more stable. Simultaneously, the tight fit also prevents dust and foreign objects from entering the receiving groove through gaps, protecting the internal guiding and positioning mechanisms and extending their service life.

[0029] 11. In this embodiment of the invention, the connecting body is specifically embodied as a post fitting in the field of eyeglasses. Through the interlocking of the buckle and the slot, a direct rigid connection is established between the lower end of the post fitting and the frame. When the upper end of the connecting body needs to deflect during sliding adjustment, this locking position becomes a reliable constraint fulcrum, and the deformation required for deflection is entirely borne and realized by the elastic arm. This locking method has a simple structure, a stable connection, and effectively locks the lower end of the post fitting in a predetermined position, ensuring the certainty of the force and movement of the entire adjustment structure.

[0030] 12. In this embodiment of the invention, a cover lens frame is formed by connecting the lens frame and the mounting bracket to be worn outside the eyeglass frame. This cover lens provides adjustable accommodating space, allowing it to adapt to different widths of inner-wear optical frames through a simple push-pull operation: pulling outwards adapts to wider inner-wear frames, and pushing inwards adapts to narrower inner-wear frames. Users can precisely adjust the mounting bracket to the corresponding position according to the size of the inner-wear eyeglass frame, achieving a perfect fit and solving the fundamental problem of poor fit due to fixed sizes in traditional cover lenses. Combined with a multi-positioning structure, the cover lens can continuously provide a stable wearing effect regardless of the fit width.

[0031] 13. In this embodiment of the invention, by limiting the unidirectional sliding range L of the guide block along the arc trajectory of the guide groove and the range of the distance d between adjacent positioning parts, the adjustment performance is optimized from two dimensions: macroscopic adjustment range and microscopic adjustment accuracy. The two complement each other, so that the device can achieve multi-level adjustment over a large range and precise positioning at each level, thereby achieving the best balance between adaptability, stability and user experience.

[0032] 14. In this embodiment of the invention, by limiting the distance S between the upper and lower ends of the connector and the range of the sliding angle a of the upper end of the connector along the arc trajectory, the change in the contact angle between the temple and the side of the head when the temple expands outward is kept within an ergonomically acceptable range, thus ensuring wearing comfort. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the visual aid wearable device provided in the first embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of a portion of the structure of the visual aid wearable device provided in the second embodiment of the present invention.

[0036] Figure 3 This is an exploded structural diagram of a portion of the visual aid wearable device provided in the second embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of a portion of the structure of the visual aid wearable device provided in the third embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the head accessory of the visual aid wearing device provided in the fifth embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of the guide block and intermediate component of the visual aid wearing device provided in the fifth embodiment of the present invention.

[0040] Figure 7 This is a cross-sectional schematic diagram of the visual aid component of the visual aid wearing device provided in the fifth embodiment of the present invention.

[0041] Figure 8 This is a cross-sectional schematic diagram of a portion of the structure of the visual aid wearable device provided in the sixth embodiment of the present invention.

[0042] Figure 9 yes Figure 6 A magnified view of A in the middle.

[0043] Explanation of reference numerals in the attached diagram: 1. Visual aid wearable device; 10. Ear hook; 11. Temple; 12. Connector; 13. Visual aid; 14. Intermediate component; 15. Light shield; 16. Flexible component; 120. Pile head fittings; 121. Upper end; 122. Lower end; 123. Elastic arm; 124. Guide groove; 125. Deformation groove; 126. Guide protrusion; 127. Guide plate; 131. Lens; 132. Lens frame; 133. Slot; 134. Rotating shaft; 135. Guide block; 136. Positioning part; 137. Receiving groove; 138. Mounting hole; 139. Guide wall; 161. Strip groove; 1221, Buckle; 1222, Positioning hole; 1351, Limiting guide hole; 1241, Positioning mother part; 1371, Guide groove. Detailed Implementation

[0044] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application 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 indicator will also change accordingly.

[0046] Furthermore, the use of terms such as "first" and "second" in this application is 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0047] Example 1 Please see Figure 1The first embodiment of the present invention provides a visual aid wearing device 1, including: two ear hooks 10, each ear hook 10 including a temple 11 and a connector 12 connected to the temple 11; a visual aid 13 for wearing in front of the user's eyes; defined: in the user wearing state, the width direction of the visual aid 13 is configured to correspond to the width direction of the user's face; the lower end 122 of the connector 12 is installed on the visual aid 13, and the upper end 121 is used to movably install the temple 11 on the visual aid 13, and the connector 12 is configured to slide along an arc trajectory with the position where its lower end 122 is installed on the visual aid 13 as the center, so that the upper end 121 of the connector 12 drives the temple 11 to generate a slidable displacement in the width direction of the visual aid 13.

[0048] Specifically, in this embodiment, the visual aid wearing device 1 includes various types of glasses such as basic glasses like vision correction glasses, sunglasses, functional protective glasses, and smart glasses. It also includes basic glasses that can be detachably attached to the wearer to provide additional functions or decorations such as sun protection and blue light blocking. The width direction of the visual aid 13 is also the direction corresponding to the width between the two temples 11.

[0049] Specifically, the temple 11 and the connecting body 12 connected to the temple 11 can be integrally formed to create a more structurally stable ear hook 10, or they can be separate components, connected to the temple 11 and the connecting body 12 through a fixed connection or a detachable connection. The connecting body 12 serves as an intermediate component connecting the temple 11 and the visual aid 13. Its lower end 122 is mounted on the visual aid 13, providing a stable mounting base and movement fulcrum for the entire adjustment structure; its upper end 121 is movably connected to the temple 11, allowing the temple 11 to change position following the movement of the upper end 121 of the connecting body 12. The connecting body 12 is configured to slide relative to the visual aid 13 along a predetermined arc trajectory with its lower end 122 as the center of rotation.

[0050] It should be noted that since the side of the human head is not a flat surface but a curved surface with a certain curvature, if the temple 11 is only adjusted in a straight line, the contact point between the temple 11 and the head will shift backward when expanding outward, causing the clamping force to deviate and resulting in discomfort. In this embodiment, by limiting the movement trajectory of the upper end 121 of the connecting body 12 to an arc trajectory, the temple 11 can swing in a corresponding manner according to the natural curvature of the side of the head while expanding outward, thus maintaining a good fit with the head throughout the entire adjustment range. At the same time, the sliding method with the lower end 122 as the fixed center ensures that the lower end 122 is firmly limited to the current position, thereby improving the stability and controllability of the rotation of the upper end 121 of the connecting body 12 and avoiding unnecessary twisting or shaking of the connecting body 12 during the adjustment process.

[0051] Understandably, when the user simply pushes the temple 11, the upper end 121 of the connector 12 slides along an arc-shaped trajectory, causing the temple 11 to slide in the width direction of the visual aid 13. At this point, the lower end 122 of the connector 12 is confined to the center of the visual aid 13's mounting position, ensuring it is firmly held in place. This accommodates different head widths or different frame widths 132 for inner-worn glasses, thus solving the problem of decreased stability of the adjustment structure in existing adjustable eyeglasses after repeated use. Simultaneously, the arc-shaped trajectory design ensures that the temple 11 maintains a comfortable fit against the side of the head at any adjustment position, avoiding clamping force shift caused by linear adjustment and significantly improving wearing comfort.

[0052] Example 2 Please see Figure 2 The second embodiment of the present invention also provides a connector 12. Based on the first embodiment described above, the lower end 122 of the connector 12 is fixed to the visual aid 13, and an elastic arm 123 is formed between the upper end 121 and the lower end 122 of the connector 12. Under the action of external force, the upper end 121 of the connector 12 causes the elastic arm 123 to undergo elastic deformation, so that the upper end 121 of the connector 12 slides along an arc-shaped trajectory to adjust the wearing distance between the two temples 11.

[0053] Specifically, in this embodiment, the connector 12 can be designed as an elastic component, wherein the portion between the upper and lower ends is constructed as an elastic arm-like structure, namely an elastic arm 123. Since the lower end 122 of the connector 12 is fixed and the upper end 121 is a free end, when an external force is applied to the temple 11 and transmitted to the upper end 121 of the connector 12, the elastic arm 123 will bend and deform. Through the deformation of the elastic arm 123, the upper end 121 moves along a natural arc-shaped trajectory with the lower end 122 as the center of rotation. When the external force is removed, the elastic potential energy stored in the elastic arm 123 is released, causing the upper end 121 to return to its original position.

[0054] Optionally, the shape of the elastic arm 123 can be set according to the shape of the vision aid 13, specifically, it can be adapted to the shape of the vision aid 13. The thickness or width of the elastic arm 123 can also vary along the length direction, for example, it can be thicker near the lower end 122 to enhance strength, and thinner near the upper end 121 to increase elasticity.

[0055] Understandably, this embodiment, by designing the connector 12 itself as an elastic deformable form to replace mechanical friction, eliminates the wear problems of traditional mechanical structures. Even after long-term use, the adjustment feel remains unchanged, further enhancing the stability of the adjustment structure. This results in users experiencing continuous, gentle elastic resistance during adjustment, rather than mechanical stiffness or looseness, making the adjustment process quiet and smooth, thus improving the user experience. Furthermore, this fully enclosed elastic structure also facilitates a concealed design that prevents dust and foreign objects from entering.

[0056] Optionally, when an elastic arm 123 is formed between the upper end 121 and the lower end 122 of the connector 12, the lower end 122 of the connector 12 is engaged and fixedly connected with the visual aid 13, so that the lower end 122 of the connector 12 is rigidly and non-rotatably limited to the position engaged and fixed with the visual aid 13, thereby further improving the stability of the connection and limitation of its lower end 122.

[0057] Please see Figure 3 Specifically, one of the lower end 122 of the connector 12 and the vision aid 13 can be configured with a buckle 1221, and the other with a slot 133. During assembly, the buckle 1221 inserts into the slot 133 and abuts against the opening of the slot 133 to form abutment fit, thereby firmly limiting the lower end 122 of the connector 12 to the position of being engaged and fixed with the vision aid 13, achieving a non-rotational engagement and fixing connection. Thus, through the mutual engagement of the buckle 1221 and the slot 133, a direct rigid connection is established between the lower end 122 of the connector 12 and the vision aid 13. When the upper end 121 of the connector 12 needs to deflect during sliding adjustment, the engagement and fixing position between the lower end 122 of the connector 12 and the vision aid 13 becomes a reliable constraint fulcrum. At this time, the deformation required for deflection will be entirely borne and realized by the elastic arm 123. In addition, this fastening method has a simple structure and a stable connection, effectively locking the lower end 122 of the connector 12 in the predetermined position, ensuring the certainty of the force and movement of the entire adjustment structure.

[0058] Example 3 Please see Figure 4The third embodiment of the present invention also provides a connector 12. Based on the first embodiment described above, the lower end 122 of the connector 12 and the visual aid 13 are rotatably connected with the connection position between the lower end 122 of the connector 12 and the visual aid 13 as the rotation center. In this case, a positioning hole 1222 may be provided on one of the lower end 122 of the connector 12 and the visual aid 13, and a rotating shaft 134 may be provided on the other, with the rotating shaft 134 passing through the positioning hole 1222. During assembly, the rotating shaft 134 passes into the positioning hole 1222, thereby forming a rotatable connection between the two. Thus, the lower end 122 of the connector 12 is rotatably confined on the visual aid 13 via the engagement of the rotating shaft 134 and the positioning hole 1222. When the user applies force to drive the upper end 121 of the temple 11 and the connector 12 to adjust the width, the lower end 122 of the connector 12 can rotate relative to the axis of the pivot 134, so that the upper end 121 of the connector 12 can slide along the arc trajectory to adjust the wearing width between the two temples 11.

[0059] Example 4 Please continue reading. Figure 3 The fourth embodiment of the present invention also provides a visual aid wearing device 1, based on any one of the first to third embodiments. In this embodiment, one of the connector 12 and the visual aid 13 is provided with a guide groove 124 extending along an arcuate trajectory, and the other is provided with a guide block 135 that slides with the guide groove 124 along the arcuate trajectory. When the upper end 121 of the connector 12 slides along the arcuate trajectory until the guide block 135 contacts the end of the guide groove 124, the guide block 135 abuts against the guide groove 124, providing a starting position and an ending position limit for the sliding of the upper end 121 of the connector 12 along the arcuate trajectory.

[0060] Specifically, the guide groove 124 is formed along the sliding direction of the connector 12, and the overall shape of the guide groove 124 restricts the movement path of the upper end 121 of the connector 12. The guide block 135 is fixed to the connector 12 or the vision aid 13 and is embedded in the guide groove 124 for sliding cooperation. Through the combined sliding structure of the guide block 135 in the guide groove 124, the movement of the upper end 121 of the connector 12 is forcibly constrained on a preset arc trajectory, ensuring the high precision of the adjustment direction and avoiding movement deviation that may occur due to manufacturing tolerances or long-term use. The end groove wall and the beginning groove wall of the guide groove 124 along the direction close to the vision aid 13 serve as physical stops, respectively abutting against the two sides of the guide block 135 to form the starting and ending positions of the limit. When the guide block 135 slides from the first end groove wall to the last end groove wall, the wearing width between the two temples 11 gradually increases, and when it slides to contact the last groove wall of the guide groove 124, it prevents the connector 12 from sliding further, thereby defining the starting position and ending position of the wearing width adjustment.

[0061] Understandably, the cooperation between the guide groove 124 and the guide block 135 allows the temple 11 to move along an ergonomic arc path, improving the precision of adjustment and the reliability of the structure. Furthermore, the limiting at both ends of the guide groove 124 effectively prevents the connector 12 from plastically deforming, breaking, or detaching due to over-adjustment, protecting structural safety and extending product lifespan. Simultaneously, users can clearly perceive the start and end points of adjustment through touch, making operation more intuitive and reassuring.

[0062] In one optional embodiment, the upper end 121 of the connector 12 is provided with a guide groove 124, and the visual aid 13 is provided with a guide block 135. The guide block 135 passes through the guide groove 124, so that the connector 12, as a moving part, carries the main body of the guide structure, which is conducive to integrating more functional structures on the connector 12. At the same time, the guide block 135 is fixed on the visual aid 13, providing a stable reference for the sliding of the connector 12 and ensuring the accuracy of the movement of the upper end 121 of the connector 12 along the preset arc trajectory.

[0063] In another optional embodiment, a guide block 135 is provided at the upper end 121 of the connector 12, and a guide groove 124 is provided on the visual aid 13. The guide block 135 passes through the guide groove 124, so that the main body of the guide structure and the visual aid 13 are integrally formed or firmly fixed, thereby enhancing the structural rigidity and positioning accuracy of the guide groove 124. The guide block 135 at the upper end 121 of the connector 12 serves as the motion output end, resulting in a more compact structure, which helps to reduce the volume and weight of the connector 12 and make the overall appearance thinner and lighter. Example 5 Please see Figures 5-7The fifth embodiment of the present invention also provides a visual aid wearing device 1, based on any one of the first to fourth embodiments. In this embodiment, one of the connecting body 12 and the visual aid 13 is recessed with positioning female portions 1241 arranged at intervals along an arc-shaped trajectory, and the other is protruding with positioning male portions 136. When the positioning male portion 136 is located at either positioning female portion 1241, it is elastically connected to the positioning female portion 1241 to prevent the connecting body 12 and the visual aid 13 from sliding relative to each other along the arc-shaped trajectory. Under the action of external force, the upper end 121 of the connecting body 12 slides relative to the visual aid 13 along the arc-shaped trajectory, and drives the positioning male portion 136 to slide from one positioning female portion 1241 to the other positioning female portion 1241.

[0064] Specifically, the positioning female part 1241 can be a recess, groove, tooth, or a continuous corrugated surface. Multiple positioning female parts 1241 are arranged at intervals along an arc-shaped trajectory to form multiple selectable locking positions. The positioning male part 136 can be a protrusion, ball head, toothed block, or protrusion on the elastic arm 123, and is set on another component that mates with it. When no external force is applied, the positioning male part 136 is embedded in the currently positioned positioning female part 1241 under the action of elastic force, generating a certain holding force to prevent relative sliding between the connecting body 12 and the visual aid 13, thereby stabilizing the temple 11 at the set width position. When the user applies a sufficiently large adjustment force, this holding force can be overcome, causing the positioning male part 136 to disengage from the current positioning female part 1241 and slide along the arc-shaped trajectory until it falls into the next positioning female part 1241, realizing gear switching. The elastic fit connection between the positioning male part 136 and any of the positioning female parts 1241 can be achieved through the elasticity of the positioning male part 136 itself, or through the local elastic deformation of the components of the positioning female part 1241. The spacing of the positioning female parts 1241 determines the precision of the adjustment, and can be designed to be equidistant or unequally spaced according to actual needs.

[0065] Understandably, the multi-position width adjustment function is achieved through the cooperation of multiple positioning female parts 1241 and positioning male parts 136, solving the problem of how users can accurately and stably fix the temples 11 at the desired width. The existence of multiple wearing widths allows users to choose the most suitable width according to their head shape or the size of their inner glasses, achieving a personalized and precise fit. In addition, the elastic cooperation between the positioning male parts 136 and positioning female parts 1241 provides sufficient holding force to ensure that the temples 11 will not accidentally slide in the set position due to daily activities, improving wearing stability.

[0066] Please continue reading. Figure 5Furthermore, the guide groove 124 is a suspended frame structure. The positioning female part 1241 is provided on the inner wall of the guide groove 124 and is arranged along the arc-shaped trajectory to form a toothed mating surface or a corrugated mating surface. The positioning male part 136 is provided on the outside of the guide block 135. When the upper end 121 of the connecting body 12 slides along the arc-shaped trajectory under the action of external force, the protrusion of the toothed mating surface or the corrugated mating surface is squeezed by the positioning male part 136 provided on the guide block 135, so that the side wall of the corresponding part of the guide groove 124 undergoes elastic deformation to avoid the positioning male part 136. When the positioning male part 136 on the guide block 135 slides to align with the recess of the toothed mating surface or the corrugated mating surface, under the action of the elastic restoring force of the side wall of the guide groove 124, the positioning male part 136 is inserted into the recess to form a positioning fit.

[0067] Specifically, the guide groove 124 can be a suspended frame structure, meaning that at least one side wall has a gap with the main body of the connector 12, allowing the side wall to have a certain elastic deformation capability. Multiple positioning females 1241, with toothed or corrugated mating surfaces, are directly machined onto the inner surface of this side wall; the positioning male 136 is located on the outside of the guide block 135, opposite to the positioning females 1241. When the guide block 135 slides within the guide groove 124, the positioning male 136 sequentially passes through the protrusions and recesses of the positioning females 1241. When passing the protrusion, the positioning male 136 presses against the corresponding side wall, forcing the side wall to elastically expand outward to create a passage; when the positioning male 136 slides into the recess, the pressing force disappears, and the side wall quickly rebounds under its own elastic restoring force, locking the positioning male 136 into the recess, thereby achieving switching and locking between different width levels, making the level switching smoother and more natural. Furthermore, this process requires no independent springs or spring sheets, relying solely on the elastic deformation of the sidewall of the guide groove 124 itself. The degree of suspension of the guide groove 124, the thickness of its sidewall, and the design of its teeth collectively determine the strength of the elasticity and the degree of gear shifting. Optionally, the positioning nut 1241 can be provided only on one side of the inner wall of the guide groove 124, or it can be symmetrically provided on opposite inner walls to achieve a more balanced force distribution.

[0068] Understandably, the positioning mother part 1241, arranged along an arc-shaped trajectory to form a toothed or corrugated mating surface, provides a series of clearly perceptible adjustment points. In conjunction with its positioning male part 136, it ensures a clear sense of adjustment and a smooth feel during the adjustment process, while also guaranteeing the stability of the eyeglass structure at each adjustment level. Simultaneously, the mating of the toothed or corrugated mating surface with the positioning male part 136 produces a clear, crisp "click" and resistance changes, providing the user with an excellent adjustment experience. Furthermore, it achieves a high degree of integration of the three major functions of guidance, limiting, and positioning onto the guide groove 124 and guide block 135, making the visual aid wearing device 1 extremely compact and maximizing space utilization. Since all functional structures are built into the guide groove 124, no adjustment components are visible from the outside, achieving a perfect hidden design and resulting in a clean and aesthetically pleasing appearance for the visual aid wearing device 1. Furthermore, by utilizing the elasticity of the guide groove material 124 instead of mechanical springs, the number of moving parts is reduced, the failure rate is lowered, and there is no metal fatigue problem. The elastic performance remains stable even after long-term use.

[0069] Please see Figure 5 Furthermore, the connector 12 is provided with a deformation groove 125 on one side of the guide groove 124. The deformation groove 125 is provided close to the side wall of the positioning mother part 1241, providing elastic deformation space for the side wall of the guide groove 124 of the positioning mother part 1241.

[0070] Understandably, the deformation groove 125 is an additional groove or gap created on the connecting body 12 near the side wall of the guide groove 124 where the positioning mother part 1241 is located. This deformation groove 125 is equivalent to removing a portion of material from the root of the side wall of the guide groove 124, further reducing the connection area between the side wall and the main body of the connecting body 12, making it a thinner and longer cantilever beam, thereby greatly increasing the elastic deformation range and deformation flexibility of the side wall. The position, length, depth, and shape of the deformation groove 125 can be designed according to the required elastic performance. For example, the deformation groove 125 can be a rectangular through groove, an arc groove, or a blind groove, and the groove can be filled with damping grease or soft rubber to adjust the elasticity and provide a damping feel. The deformation groove 125 communicates with the guide groove 124, providing the cam-type shifting mechanism, composed of the positioning mother part 1241 and the positioning male part 136, with a controllable and reversible positioning mother part 1241 necessary for its elastic engagement and disengagement. When the positioning male part 136 and the positioning female part 1241 are pressed together and cross each other, the force applied to the guide groove 124 is transmitted to the side wall of the guide groove 124. At this time, the deformation groove 125 allows the root region to undergo a small amount of elastic bending or expansion towards the groove, so as to absorb most of the impact energy during engagement through this deformation, so that the positioning male part 136 can slide into or out of the stop position more smoothly, and ensure that each deformation can be restored after the force is removed, thereby realizing reversible gear adjustment.

[0071] Furthermore, the guide block 135 is pre-installed in the guide groove 124 via the positioning male part 136 and the positioning female part 1241 to form an assembly; the visual aid 13 is provided with a receiving groove 137, and the visual aid 13 has a slot opening in the width direction that communicates with the receiving groove 137; the part of the connector 12 with the guide groove 124 is movably inserted into the receiving groove 137 along the slot opening so that the guide block 135 is located in the receiving groove 137; the visual aid 13 is also provided with a mounting hole 138 that communicates with the receiving groove 137, and the mounting hole 138 is offset from the slot opening of the receiving groove 137; the visual aid wearing device 1 also includes an intermediate part 14, which is inserted into the receiving groove 137 along the mounting hole 138 and fixes the guide block 135 in the receiving groove 137.

[0072] Specifically, the guide block 135 and the guide groove 124 are pre-assembled into a single unit through the interlocking of the positioning male part 136 and the positioning female part 1241, forming a fully functional assembly. The relative positions of the guide block 135 and the guide groove 124 in this assembly are determined, and they can slide relative to each other along an arc-shaped trajectory. A receiving groove 137 is formed inside the visual aid 13 to accommodate and fix the aforementioned assembly. A slot is provided on the side of the visual aid 13, extending along the width of the visual aid 13 and communicating with the receiving groove 137, allowing the connecting body 12, which has the guide groove 124, to be inserted laterally. When the connecting body 12 is inserted into the receiving groove 137 through the slot, the guide block 135 is precisely positioned within the internal space of the receiving groove 137. A mounting hole 138 is also provided on the visual aid 13, which also communicates with the receiving groove 137, but its extension direction is different from that of the slot; the two are offset, such as being perpendicular to each other. Intermediate component 14, such as a pin, locking block, or threaded component, is installed in the mounting hole 138, with its front end extending into the receiving groove 137 and abutting against the back or side of the guide block 135, thereby physically preventing the guide block 135 from exiting the receiving groove 137 along the groove direction. Optionally, the abutting portions of the intermediate component 14 and the guide block 135 can be provided with mutually cooperating positioning structures, such as a combination of recesses and protrusions or a combination of locking blocks and slots, to form an auxiliary locking mechanism.

[0073] Understandably, by setting the pre-assembled assembly of guide block 135 and guide groove 124 as an independent functional unit, a precise sliding and positioning fit is formed internally, ensuring the reliability of the core adjustment function. Simultaneously, the pre-assembled assembly of guide block 135 and guide groove 124 makes the connection between guide block 135, guide groove 124, and visual aid 13 more stable, further improving the stability of the wearing width adjustment between temples 11. Furthermore, the portion of connector 12 with guide groove 124 is horizontally inserted into receiving groove 137, allowing guide block 135 to be concealed within receiving groove 137, achieving a hidden installation of the adjustment mechanism and a clean appearance. At the same time, connector 12 is housed within receiving groove 137, and intermediate component 14 is also inserted from the side and hidden, resulting in a strong overall product aesthetic. When disassembly is required, simply pull out intermediate component 14 to remove connector 12 from the groove, making operation simple.

[0074] Please see Figure 6 Furthermore, a limiting guide hole 1351 is provided on the guide block 135, and the intermediate member 14 passes through the limiting hole and is fixedly connected to the visual aid 13, thereby installing and fixing the guide block 135 in a predetermined position. The intermediate member 14 also prevents the guide block 135 from rotating when it moves along an arc-shaped trajectory at the upper end 121 of the connecting body 12. Therefore, the intermediate member 14 and the intermediate member 14 on the guide block 135 are mated by a textured surface, that is, the outer surface of the intermediate member 14 and / or the inner wall of the limiting guide hole 1351 are provided with micro-textures or toothed structures to increase friction. During assembly, the intermediate part 14 and at least one bone protruding outward from the side are inserted into the limiting guide hole 1351 of the guide block 135, and the protruding end is fixedly connected to the mounting hole 138 on the visual aid 13. This achieves that while the guide block 135 is firmly locked in the axial direction by the visual aid 13, the cooperation between its textured surface and the limiting guide hole 1351 suppresses the circumferential rotation between the two, thereby ensuring the accuracy and stability of gear switching after the guide block 135 slides.

[0075] Furthermore, the hardness of the material used to make the guide block 135 is lower than the hardness of the material used to make the connector 12, which has the guide groove 124 portion.

[0076] Understandably, the hardness of the material used for the guide block 135 is lower than that of the material used for the connecting body 12, which has the guide groove 124. This facilitates protection of the inner wall of the guide groove 124, which is harder to manufacture and replace, during long-term sliding. This protects the inner wall of the guide groove 124, extends the lifespan of the core component, and reduces maintenance costs. Furthermore, by effectively protecting the guide groove 124, the precision and clarity of the entire wearing width adjustment mechanism are ensured to be maintained over a long period, further resolving the issue of weak stability after repeated adjustments of the wearing width between the temples 11. The softer guide block 135 combined with the harder guide groove 124 also makes the sliding smoother.

[0077] Please see Figure 5 and Figure 7 Furthermore, the connector 12 is provided with a guide protrusion 126 at the end of the portion provided with the guide groove 124. The guide protrusion 126 is configured to be inserted into the receiving groove 137. The receiving groove 137 is provided with a guide slide groove 1371 at the end away from the groove opening. The guide protrusion 126 is installed along the guide slide groove 1371 so that the portion of the connector 12 provided with the guide groove 124 is positioned and installed in the receiving groove 137.

[0078] Understandably, the receiving groove 137 is used to accommodate and insert the portion of the connector 12 with the guide groove 124. The upper end 121 of the connector 12 also has a guide protrusion 126 protruding from the end of the portion with the guide groove 124. A guide groove 1371, matching the shape, size, and length of the guide protrusion 126, is provided inside the receiving groove 137, and this guide groove 1371 communicates with the receiving groove 137. Therefore, after the portion of the connector 12 with the guide groove 124 is inserted into the receiving groove 137, the guide protrusion 126 can be inserted into the corresponding guide groove 1371. Thus, the main body of the connecting body 12 with the guide groove 124 is accommodated in the receiving groove 137, realizing the main load bearing and lateral limiting; while the extended guide protrusion 126 is inserted into the deeper guide groove 1371, providing additional, in-depth positioning and anti-torsional load capability, thereby ensuring that the connecting body 12 inserted into the receiving groove 137 will not tilt or swing unexpectedly when subjected to complex external forces, making its movement trajectory more stable and straight during the sliding adjustment process.

[0079] Please see Figure 8 and Figure 9 In one optional embodiment, the unidirectional sliding range L of the guide block 135 along the arc-shaped trajectory of the guide groove 124 is: 0 < L ≤ 6 mm.

[0080] Understandably, by limiting the unidirectional sliding range L of the guide block 135 along the arc trajectory of the guide groove 124, the maximum unilateral adjustment of the guide block 135 relative to its initial position can be limited. L > 0 ensures adjustability, while L ≤ 6 avoids structural bulkiness or mechanical performance degradation caused by excessive adjustment range, ensuring that the connector 12 can still maintain sufficient structural strength and stability at the extreme position.

[0081] Please see Figure 9 In one optional embodiment, the spacing d between adjacent positioning mother parts 1241 is: 0.8mm≤d≤1.2mm.

[0082] Understandably, the distance d between adjacent positioning female parts 1241 is the gear interval. The distance d between adjacent positioning female parts 1241 determines the gear precision of the wearing width adjustment. If d is too small, the gears are too close together, which increases the manufacturing difficulty and cost, and makes it difficult for users to clearly perceive the tactile feedback of gear shifting. Furthermore, the gear holding force may be insufficient due to shallow positioning, making it easy to slip. If d is too large, the adjustment precision is insufficient, and users may not be able to find the optimal position that perfectly fits their head shape or the size of the inner frame 132, affecting wearing comfort and fit. Limiting d to between 0.8mm and 1.2mm can provide a clear and comfortable gear feel while ensuring sufficient adjustment precision, allowing users to obtain clear feedback during adjustment. In addition, the engagement depth between the positioning male part 136 and the positioning female part 1241 is moderate, and the holding force is reliable.

[0083] In one optional embodiment, the unidirectional sliding range L of the guide block 135 along the arc-shaped trajectory of the guide groove 124 is: 0 < L ≤ 6 mm, and the distance d between adjacent positioning mother parts 1241 is: 0.8 mm ≤ d ≤ 1.2 mm.

[0084] Understandably, when the guide block 135 and guide groove 124 form a multi-level wearing width adjustment structure independent of the positioning male part 136 and positioning female part 1241, that is, when the sliding range of the guide block 135 and guide groove 124 is independently limited by the length of the guide groove 124, and the level positioning is independently limited by the spacing of the positioning female parts 1241, the unidirectional sliding range and the spacing of adjacent positioning female parts 1241 optimize the adjustment performance from two dimensions: macroscopic adjustment range and microscopic adjustment accuracy. Setting the unidirectional sliding range to 0 < L ≤ 6 mm ensures that the connector 12 can maintain sufficient structural strength and stability at extreme positions, avoiding over-design of the structure; setting the spacing of adjacent positioning female parts 1241 to 0.8 mm ≤ d ≤ 1.2 mm ensures the precision of level switching and the clarity of feel during adjustment. The two work together to enable the device to achieve multi-level adjustment over a wide range and precise positioning at each level, thereby achieving the best balance between adaptability, stability and user experience.

[0085] Example 6 Please see Figure 3 The sixth embodiment of the present invention also provides a visual aid wearing device 1, based on any one of the first to fifth embodiments. In this embodiment, at least one of the connector 12 and the visual aid 13 is provided with a guide plate 127, which extends along an arcuate trajectory, and the other is provided with a guide wall 139 that is movably fitted to the surface of the guide plate 127 along the arcuate trajectory. When the upper end 121 of the connector 12 slides away from the visual aid 13 along the arcuate trajectory under the action of external force, the guide plate 127 and the guide wall 139 maintain a surface fit, limiting the relative gap between the connector 12 and the visual aid 13.

[0086] Specifically, the guide plate 127 can be a plate-like structure extending from the connector 12, and the guide wall 139 can be an arc-shaped wall or arc-shaped groove on the visual aid 13, the curvature of which matches the movement trajectory of the upper end 121 of the connector 12; or vice versa. During the movement of the connector 12, due to the action of torque, the connector 12 tends to tilt outward and create a gap with the visual aid 13. The continuous contact between the guide plate 127 and the guide wall 139 forms a forced constraint, ensuring that the connector 12 cannot tilt outward regardless of its position. Optionally, the guide plate 127 can also be provided on both sides of the connector 12, and the guide wall 139 can be provided on both sides of the visual aid 13, forming a double-sided constraint. Therefore, the cooperation between the guide plate 127 and the guide wall 139 effectively prevents the connector 12 from tilting outward during adjustment, ensuring a tight fit between the connector 12 and the visual aid 13. This eliminates the wobbling caused by gaps, making the fit more secure. Furthermore, the tight fit prevents dust and foreign objects from entering the receiving groove 137 through gaps, protecting the internal guiding and positioning mechanisms and extending their service life.

[0087] Understandably, the number and position of the guide plate 127 and guide wall 139 can be selected according to the overall structure of the visual aid wearing device 1, and this embodiment does not impose any restrictions on this.

[0088] Optionally, one of the guide plate 127 and the guide wall 139 can be set on the middle section between the upper end 121 and the lower end 122 of the connector 12, and the other can be set on the boundary area of ​​the visual aid 13 corresponding to the position of the guide plate 127 or the guide wall 139 on the middle section.

[0089] Optionally, one of the guide plate 127 and the guide wall 139 may be set in the upper end 121 boundary area of ​​the connector 12, and the other may be set in the boundary area of ​​the visual aid 13 corresponding to the upper end 121 boundary area.

[0090] Optionally, the guide plate 127 and guide wall 139 can also be positioned in other boundary areas on the connector 12 and visual aid 13 besides the two positions mentioned above. This embodiment does not limit this. The key is to ensure that they effectively limit the relative gap between the connector 12 and visual aid 13.

[0091] Optionally, the number of mating structures formed by the guide plate 127 and the guide wall 139 can also be selected according to the overall structure of the visual aid wearing device 1. One set, two sets, or more than two sets can be set. This embodiment does not limit this.

[0092] Please see Figure 3 and Figure 5 Furthermore, the connector 12 is a pile head accessory 120, and the visual aid 13 is a frame 132 or a combination of a lens 131 and a frame 132. The lower end 122 of the pile head accessory 120 is provided with a buckle 1221, and the frame 132 is provided with a slot 133 that cooperates with the buckle 1221. The lower end 122 of the pile head accessory 120 is fixed to the frame 132 by the buckle 1221 and the slot 133.

[0093] Specifically, when the connector 12 is a head fitting 120, the head fitting 120 is an independent component installed at the head position to realize the connection between the frame 132 and the temple 11. Its lower end 122 is fixedly connected to the frame 132, and its upper end 121 is used to install the temple 11. The temple 11 can be hinged to the head fitting 120 through a hinge shaft. The head fitting 120 slides relative to the frame 132 along an arc trajectory with its lower end 122 as the fulcrum, thereby causing the temple 11 to move in the width direction of the frame 132, realizing the wearing width adjustment function of the temple 11 relative to the frame 132.

[0094] More specifically, one of the lower end 122 of the connector 12 and the vision aid 13 can be configured with a buckle 1221, and the other with a slot 133. During assembly, the buckle 1221 inserts into the slot 133 and abuts against the opening of the slot 133 to form abutment fit, thereby firmly limiting the lower end 122 of the connector 12 to the position of being engaged and fixed with the vision aid 13, achieving a non-rotational engagement and fixing connection. Thus, through the mutual engagement of the buckle 1221 and the slot 133, a direct rigid connection is established between the lower end 122 of the connector 12 and the vision aid 13. When the upper end 121 of the connector 12 needs to deflect during sliding adjustment, the engagement and fixing position between the lower end 122 of the connector 12 and the vision aid 13 becomes a reliable constraint fulcrum. At this time, the deformation required for deflection will be entirely borne and realized by the elastic arm 123. In addition, this fastening method has a simple structure and a stable connection, effectively locking the lower end 122 of the connector 12 in a predetermined position, ensuring the certainty of the force and movement of the entire adjustment structure. Optionally, multiple buckles 1221 can be provided at the lower end 122 of the pile head accessory 120, or multiple slots 133 can be provided on the frame 132 to increase the stability of the connection.

[0095] Furthermore, the frame 132 is connected to the head fitting 120 to form a cover frame 132 for wearing outside the eyeglass frame 132; as the upper end 121 of the connector 12 gradually slides away from the visual aid 13 along an arc-shaped trajectory under the action of external force, the accommodating space inside the cover frame 132 for fitting and accommodating the eyeglass frame 132 gradually increases; as the upper end 121 of the connector 12 gradually slides towards the visual aid 13 along an arc-shaped trajectory under the action of external force, the accommodating space inside the cover frame 132 for fitting and accommodating the eyeglass frame 132 gradually decreases.

[0096] Specifically, the visual aid wearing device 1 in this embodiment can be a lens cover, which needs to have an internal space to accommodate the inner eyeglass frame 132. The frame 132 and the post fitting 120 together constitute the boundary of this space. When the upper end 121 of the connector 12 slides outward, that is, away from the visual aid 13, the distance between the two post fittings 120 increases, the overall width of the lens cover 132 increases, and therefore the space inside for accommodating the inner eyeglass frame 132 also increases; conversely, sliding inward reduces the space. That is, pulling outward adapts to a wider inner eyeglass frame 132; pushing inward adapts to a narrower inner eyeglass frame 132. The user can precisely adjust the post fitting 120 to the corresponding position according to the size of the inner eyeglass frame 132 to achieve a proper fit.

[0097] Please see Figure 3 Furthermore, a light-blocking plate 15 is provided between the upper end 121 and the lower end 122 of the pile head fitting 120, and the shape of the light-blocking plate 15 matches the edge shape of the lens 131.

[0098] Understandably, because existing lens 131 needs to completely cover the optical lens underneath, its size is usually large. When worn, light from behind the wearer easily shines on the edge of the lens 131 and, after reflection from the inner surface, directly enters the eye, causing significant visual pollution and glare. In this embodiment, a light-blocking plate 15 is provided between the upper end 121 and the lower end 122 of the head fitting 120, and the edge shape of the light-blocking plate 15 needs to match the edge shape of the lens 131, i.e., it is an arc-shaped structure similar to the edge of the lens 131, to achieve a seamless connection between the light-blocking plate 15 and the edge of the lens 131. The light-blocking plate 15 integrated between the upper end 121 and the lower end 122 is specifically a light-blocking plate 15 integrated with the elastic segment. When the user pushes the head fitting 120 to expand the lens frame 132 to fit different sizes of optical lenses, the sliding and deflection of the upper end 121 of the head fitting 120 will simultaneously cause the light-blocking plate 15 connected to it to produce corresponding displacement and deformation. This allows the blocking area of ​​the light-blocking plate 15 to dynamically adjust with the sliding adjustment of the upper end 121, ensuring that it can continuously provide effective side and rear light blocking under any fit width, thereby solving the problem that the side light blocking effect of traditional adjustable glasses decreases or fails after the width is changed.

[0099] Please see Figure 3 Furthermore, a flexible member 16 is provided on the inner side of the temple 11. The flexible member 16 extends from the connection position between the temple 11 and the upper end 121 towards the temple 11 away from the head fitting 120.

[0100] Specifically, the flexible element 16 can be made of a soft and moderately elastic material such as silicone or thermoplastic elastomer. Its mounting position can be from the connection between the temple 11 and the upper end 121 of the headpiece fitting 120, and extend along the inner surface of the temple 11 towards the end of the temple 11 to cover a significant length, so as to wrap the main contact area between the temple 11 and the main contact area between the temple 11 and the user's head on the temporal and upper ear sides.

[0101] Understandably, the flexible member 16, when the glasses in this embodiment are non-socket type optical glasses, improves the user's wearing comfort by being located inside the temple 11 of the socket lens. When the glasses in this embodiment are socket lenses, when the user uses the upper end 121 of the head fitting 120 to shorten the lateral distance between the socket lens temple 11 and the optical lens temple 11, the flexible member 16 located inside the socket lens temple 11 reliably approaches and wraps around the optical lens temple 11, allowing the temple 11 to be embedded within the flexible member 16, thus making the connection between the optical glasses and the socket lens more secure.

[0102] Please see Figure 3Optionally, the flexible part 16 may be provided with a plurality of strip-shaped grooves 161 along the axial direction of the temple 11, so that the temple 11 of the optical lens can be embedded in a groove, further improving the stability of wearing the optical lens and the casement lens.

[0103] It should be noted that the pile head accessory 120 is an integral structure. Its upper end 121, lower end 122, the middle section between the upper end 121 and the lower end 122, and the light-blocking plate 15 can be integrally formed, thereby improving the overall strength of the pile head accessory 120 and the connection strength between the various structural parts.

[0104] Please see Figure 5 and Figure 9 Furthermore, the distance S between the upper end 121 and the lower end 122 of the connector 12 is: 29mm≤S≤39mm; and / or, the sliding angle a of the upper end 121 of the connector 12 along the arc trajectory is: 2.2°≤a≤8.2°.

[0105] Specifically, the distance S between the upper end 121 and the lower end 122 of the connector 12 represents the vertical distance between the upper end 121 and the lower end 122 of the connector 12, i.e., the height of the connector 12. The size of S directly affects the mechanical performance and structural appearance of the adjustment. If S is too small, the lever arm is short, and a larger elastic deformation angle is required to achieve the same adjustment range, which may lead to excessive stress on the elastic arm 123 or excessive adjustment force. If S is too large, the structure is bulky, and an excessively long lever arm may lead to decreased stability. Setting the distance S between the upper end 121 and the lower end 122 of the connector 12 in the range of 29-39mm ensures an optimal balance between the structural strength and adjustment efficiency of the connector 12. The sliding angle α of the upper end 121 of the connector 12 along the arc trajectory represents the angle range through which the upper end 121 of the connector 12 swings from the minimum to the maximum position, i.e., the sliding angle. α and S together determine the actual linear adjustment amount of the temple width 11. The angular range of 2.2°-8.2°, combined with the range of values ​​for S, ensures that the angle of contact between the temple 11 and the side of the head remains within an ergonomically acceptable range when the temple expands outward, guaranteeing wearing comfort. Optionally, 'a' can take specific values ​​such as 2.2°, 3.5°, 5°, 6.8°, and 8.2°, which can be controlled by designing the arc length and radius of curvature of the guide groove 124.

[0106] Understandably, by limiting the geometry and angle of motion of the connector 12, the harmony of the product's appearance and the comfort of wearing it are ensured. Setting the height of the connector 12 at 29-39mm makes the adjustment mechanism more visually harmonious with the overall proportions of the glasses; the angular range of 2.2°-8.2° ensures that the temples 11 conform to the side curve of the head in any adjustment position, with uniform clamping force, and are not prone to pressure even after long-term wear, thus improving the wearing comfort of the product.

[0107] Compared with the prior art, the visual aid wearable device provided by the present invention has the following beneficial effects: 1. This invention provides a visual aid wearing device. By mounting the lower end of a connector to a visual aid and movably mounting the upper end to the temple, the connector is slidably connected to the visual aid along an arc-shaped trajectory centered on its lower end. This allows the temple to slide freely in the width direction of the visual aid. When the user pushes the temple, the upper end of the connector slides along the arc-shaped trajectory, causing the temple to shift in the width direction, thereby adjusting the wearing distance between the two temples. Because the lower end of the connector is firmly fixed at the mounting position of the visual aid, it provides a stable fulcrum for the entire adjustment structure, making the rotation of the upper end of the connector stable and controllable. This avoids unnecessary twisting or shaking during adjustment, thus solving the problem of decreased stability of the adjustment structure in existing adjustable glasses after repeated use.

[0108] 2. In this embodiment of the invention, the portion between the upper and lower ends of the connector is set as an elastic arm, and the lower end of the connector is fixedly installed on the visual aid. When an external force is applied to the upper end of the connector, the elastic arm undergoes elastic deformation, causing the upper end to slide along an arc trajectory. After the external force is removed, the elastic arm recovers its deformation, driving the upper end to reset. This achieves the replacement of sliding friction in traditional mechanical structures with the elastic deformation of the material itself, eliminating the problem of mechanical wear. Even after long-term use, the adjustment feel remains the same, further enhancing the stability of the adjustment structure.

[0109] 3. In this embodiment of the invention, a guide groove extending along an arc-shaped trajectory is provided on one of the connector and the visual aid, and a guide block that slides with the guide groove is provided on the other. When the guide block slides to contact the end of the guide groove, it forms an abutment fit, providing a starting position and an ending position limit for the sliding of the upper end of the connector. This forces the adjustment of the temple to be constrained on a preset arc-shaped trajectory, ensuring the high precision of the adjustment direction. The physical stops at both ends of the guide groove effectively prevent the user from over-adjusting. At the same time, the user can clearly perceive the starting point and ending point of the adjustment through touch, making the operation more intuitive and reassuring.

[0110] 4. In this embodiment of the invention, positioning female parts are arranged at intervals along an arc-shaped trajectory on one of the connector and the visual aid, and positioning male parts are provided on the other for elastic engagement. When no external force is applied, the positioning male part elastically engages with the currently positioned positioning female part to generate a holding force that prevents relative sliding. When sufficient external force is applied, the positioning male part can slide from one positioning female part to another, realizing gear switching. This allows users to select the most suitable width according to their head shape or the size of their inner glasses, achieving personalized and precise fitting. Furthermore, the elastic engagement between the positioning male part and the positioning female part provides sufficient holding force to ensure that the temples will not accidentally slide in the set position due to daily activities, thus improving wearing stability.

[0111] 5. In this embodiment of the invention, the guide groove is set as a suspended frame structure, the positioning female part is placed on the inner wall of the guide groove to form a toothed or corrugated mating surface, and the positioning male part is placed on the outside of the guide block. When the upper end of the connecting body slides, the positioning male part squeezes the protrusion of the positioning female part, causing the side wall of the guide groove to elastically deform to avoid it. When it slides to the recessed part, the side wall elastically recovers and the positioning male part is locked in to form a positioning fit. This achieves the goal of embedding all functional structures inside the guide groove, making any adjustment parts completely invisible from the outside, realizing a hidden design, and making the product look neat and beautiful. Moreover, the fit between the toothed or corrugated mating surface and the positioning male part can produce a clear and crisp "click" feeling and resistance change, providing users with a better adjustment experience.

[0112] 6. In this embodiment of the invention, a deformation groove is opened on one side of the guide groove on the connecting body, and the deformation groove is set close to the side wall where the positioning mother is set. This provides elastic deformation space for the side wall of the guide groove where the positioning mother is set. When the positioning male and positioning female are squeezed, the deformation groove allows the area to undergo a small amount of elastic bending or expansion towards the groove, absorbing the impact energy during the meshing process. This allows the positioning male to slide into or out of the stop position more smoothly, and ensures that each deformation can be restored after the force is removed, thereby achieving reversible gear adjustment.

[0113] 7. In this embodiment of the invention, the guide block and guide groove are pre-assembled into an assembly. A receiving groove and a communicating slot are provided in the visual aid. The part of the connector with the guide groove is inserted into the receiving groove along the slot. Then, the intermediate part is inserted through the mounting hole, which is offset from the slot direction, to fix the guide block in the receiving groove. The pre-assembled assembly of the guide block and guide groove is an independent functional unit with precise sliding and positioning fit inside, ensuring the reliability of the core adjustment function. Moreover, the offset setting of the mounting hole and the slot, combined with the holding and fixing of the intermediate part, forms a mechanical interlocking structure. Stable fixing can be achieved without any screws or glue, eliminating the risk of loosening due to vibration and ensuring long-term stability. When disassembly is required, the connector can be pulled out from the slot simply by pulling out the intermediate part, making the operation simple.

[0114] 8. In this embodiment of the invention, by setting the hardness of the material of the guide block to be lower than that of the material of the connector with the guide groove, the inner wall of the guide groove, which has high hardness, is difficult to process, and is difficult to replace, is protected. This effectively protects the key structure that determines the position accuracy, so that the position accuracy and positioning clarity of the entire wearing width adjustment mechanism can be maintained for a long time, and further solves the problem of weak stability after multiple adjustments of the wearing width between the temples.

[0115] 9. In this embodiment of the invention, the main body of the connecting body with the guide groove is accommodated in the receiving groove, which realizes the main bearing and lateral limiting; while the extended guide protrusion is inserted into the deeper guide groove, which provides additional, in-depth positioning and anti-torsional load capability, thereby ensuring that the connecting body inserted into the receiving groove will not tilt or swing unexpectedly when subjected to complex external forces, making its movement trajectory more stable during the sliding adjustment process.

[0116] 10. In this embodiment of the invention, the continuous surface contact between the guide plate and the guide wall forms a forced constraint. Regardless of the position of the connector, it effectively prevents the connector from tilting outwards due to torque, ensuring a tight fit between the connector and the visual aid, eliminating the wobbling sensation caused by gaps, and making the wearing experience more stable. Simultaneously, the tight fit also prevents dust and foreign objects from entering the receiving groove through gaps, protecting the internal guiding and positioning mechanisms and extending their service life.

[0117] 11. In this embodiment of the invention, the connecting body is specifically embodied as a post fitting in the field of eyeglasses. Through the interlocking of the buckle and the slot, a direct rigid connection is established between the lower end of the post fitting and the frame. When the upper end of the connecting body needs to deflect during sliding adjustment, this locking position becomes a reliable constraint fulcrum, and the deformation required for deflection is entirely borne and realized by the elastic arm. This locking method has a simple structure, a stable connection, and effectively locks the lower end of the post fitting in a predetermined position, ensuring the certainty of the force and movement of the entire adjustment structure.

[0118] 12. In this embodiment of the invention, a cover lens frame is formed by connecting the lens frame and the mounting bracket to be worn outside the eyeglass frame. This cover lens provides adjustable accommodating space, allowing it to adapt to different widths of inner-wear optical frames through a simple push-pull operation: pulling outwards adapts to wider inner-wear frames, and pushing inwards adapts to narrower inner-wear frames. Users can precisely adjust the mounting bracket to the corresponding position according to the size of the inner-wear eyeglass frame, achieving a perfect fit and solving the fundamental problem of poor fit due to fixed sizes in traditional cover lenses. Combined with a multi-positioning structure, the cover lens can continuously provide a stable wearing effect regardless of the fit width.

[0119] 13. In this embodiment of the invention, by limiting the unidirectional sliding range L of the guide block along the arc trajectory of the guide groove and the range of the distance d between adjacent positioning parts, the adjustment performance is optimized from two dimensions: macroscopic adjustment range and microscopic adjustment accuracy. The two complement each other, so that the device can achieve multi-level adjustment over a large range and precise positioning at each level, thereby achieving the best balance between adaptability, stability and user experience.

[0120] 14. In this embodiment of the invention, by limiting the distance S between the upper and lower ends of the connector and the range of the sliding angle a of the upper end of the connector along the arc trajectory, the change in the contact angle between the temple and the side of the head when the temple expands outward is kept within an ergonomically acceptable range, thus ensuring wearing comfort.

[0121] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A visual aid wearable device, characterized in that: include; Two ear hooks, each of which includes a temple and a connector connected to the temple; Visual aids, worn in front of the user's eyes; Definition: When worn by a user, the width direction of the visual aid is configured to correspond to the width direction of the user's face; The lower end of the connector is mounted on the visual aid, and the upper end is used to movably mount the temple to the visual aid. The connector is configured to slide along an arc-shaped trajectory with the visual aid as the center of the position where its lower end is mounted on the visual aid, so that the upper end of the connector drives the temple to produce a slidable displacement in the width direction of the visual aid.

2. The visual aid wearable device according to claim 1, characterized in that, The lower end of the connector is fixed to the visual aid, and a flexible arm is formed between the upper and lower ends of the connector. When the upper end of the connector is subjected to an external force, the elastic arm undergoes elastic deformation, causing the upper end of the connector to slide along the arc-shaped trajectory to adjust the wearing distance between the two temples.

3. The visual aid wearable device according to claim 1, characterized in that, One of the connector and the visual aid is provided with a guide groove extending along the arc-shaped trajectory direction, and the other is provided with a guide block that slides and engages with the guide groove along the arc-shaped trajectory direction. When the upper end of the connector slides along the arc-shaped trajectory until the guide block contacts the end of the guide groove, the guide block and the guide groove abut against each other, providing a starting position and an ending position limit for the upper end of the connector to slide along the arc-shaped trajectory.

4. The visual aid wearable device according to claim 3, characterized in that, One of the connector and the visual aid is recessed with positioning female parts arranged at intervals along the arc-shaped trajectory, and the other is protruding with positioning male parts. When the positioning male parts are located at either of the positioning female parts, they are elastically connected to the positioning female parts to prevent the connector and the visual aid from sliding relative to each other along the arc-shaped trajectory. Under the action of external force, the upper end of the connector slides relative to the visual aid along the arc-shaped trajectory, and drives the positioning male part to slide from one of the positioning female parts to the other positioning female part.

5. The visual aid wearable device according to claim 4, characterized in that, The guide groove is a suspended frame structure. The positioning female part is located on the inner wall of the guide groove and is arranged along the arc trajectory to form a toothed mating surface or a corrugated mating surface. The positioning male part is located on the outside of the guide block. During the sliding of the upper end of the connector along the arc-shaped trajectory under the action of external force, the protrusion of the toothed mating surface or the corrugated mating surface is squeezed by the positioning male part provided on the guide block, causing the side wall of the corresponding part of the guide groove to undergo elastic deformation to avoid the positioning male part. When the positioning male on the guide block slides to align with the recess of the toothed mating surface or the corrugated mating surface, under the action of the elastic restoring force of the sidewall of the guide groove, the positioning male engages with the recess to form the positioning fit.

6. The visual aid wearable device according to claim 5, characterized in that, The connector also has a deformation groove on one side of the guide groove. The deformation groove is located near the side wall where the positioning mother is located, providing elastic deformation space for the side wall of the guide groove where the positioning mother is located.

7. The visual aid wearable device according to claim 5, characterized in that, The guide block is pre-installed in the guide groove via the positioning male part and the positioning female part to form an assembly; The visual aid is provided with a receiving groove, and the visual aid has a slot in the width direction that communicates with the receiving groove; the part of the connecting body with the guide groove is movably inserted into the receiving groove along the slot so that the guide block is located in the receiving groove; The visual aid also has a mounting hole that connects to the receiving groove. The mounting hole is offset from the groove opening of the receiving groove. The visual aid wearing device also includes an intermediate component, which is inserted into the receiving groove along the mounting hole and fixes the guide block in the receiving groove.

8. The visual aid wearable device according to claim 7, characterized in that, The hardness of the material used to make the guide block is lower than the hardness of the material used to make the connector having the guide groove portion.

9. The visual aid wearable device according to claim 7, characterized in that, The connector is further provided with a guide protrusion at the end of the portion having the guide groove. The guide protrusion is configured to be inserted into the receiving groove. The receiving groove is further provided with a guide slide groove at the end away from the groove opening. The guide protrusion is installed along the guide slide groove so that the portion of the connector having the guide groove is positioned and installed in the receiving groove.

10. The visual aid wearing device according to any one of claims 2-9, wherein at least one of the connecting body and the visual aid is provided with a guide plate, the guide plate extending along the arcuate trajectory direction, and the other is provided with a guide wall that is movably fitted to the plate surface of the guide plate along the arcuate trajectory direction; Furthermore, as the upper end of the connector slides away from the visual aid along the arc-shaped trajectory under the action of external force, the guide plate and the guide wall maintain a surface-to-surface fit, limiting the relative gap between the connector and the visual aid.

11. The visual aid wearable device according to claim 10, characterized in that, The connector is a pile head accessory, and the visual aid is a combination of a frame or lens and the frame. The lower end of the pile head accessory is provided with a buckle, and the frame is provided with a slot that cooperates with the buckle. The lower end of the pile head accessory is fixed to the frame by the buckle and the slot.

12. The visual aid wearable device according to claim 11, characterized in that, The frame and the head fitting are connected to form a cover-up frame for wearing over eyeglasses; As the upper end of the connector gradually slides away from the visual aid along the arc-shaped trajectory under the action of external force, the accommodating space inside the lens frame for fitting and accommodating the eyeglass frame gradually increases. As the upper end of the connector gradually slides towards the visual aid along the arc-shaped trajectory under the action of external force, the accommodating space inside the lens frame for fitting and accommodating the eyeglass frame gradually decreases.

13. The visual aid wearable device according to claim 5, characterized in that, The unidirectional sliding range L of the guide block along the arc-shaped trajectory in the guide groove is: 0 < L ≤ 6 mm; And / or, the distance d between adjacent positioning mother parts is: 0.8mm≤d≤1.2mm.

14. The visual aid wearable device according to claim 1, characterized in that, The distance S between the upper and lower ends of the connector is: 29mm≤S≤39mm; And / or, the sliding angle α of the upper end of the connector along the arc trajectory is: 2.2°≤a≤8.2°.

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