A headgear structure for an AR display module

Abstract

The utility model discloses a head hoop structure for AR display module, specifically relates to AR wearing technical field, including two from display module top two sides to rear side extension's support frame, the end portion of two support frames is installed with the hoop board parallel to support frame away from display module, the end portion of two hoop boards all is installed with the first memory alloy board of flexible deformation to display module, the outer wall of two hoop boards is far away from and is equipped with the outer frame perpendicular to hoop board, and the outer frame end portion is installed with the adjusting board parallel to hoop board, and the angle between display module, support frame, hoop board, outer frame and adjusting board is fixed. The utility model discloses through adjusting piece drive first memory alloy board independent bending precision adaptation head front profile, cooperate with the second, third memory alloy board of " Y " shape arc shape closely adhere to head side, and the rear pillow portion foam, rubber sheet and adjusting spring buffer pressure in cooperation, improve the wearing experience, and the overall adaptation range is wide, and the operation is convenient and comfortable durable.

Description

Technical Field

[0001] This utility model relates to the field of AR wearable technology, and more specifically, to a headband structure for an AR display module. Background Technology

[0002] In the field of AR wearable technology, the headband structure is a core component that ensures stable wear of the AR display module and a good user experience. It needs to balance adaptability, comfort, and display stability to meet the demands of long-term use scenarios such as immersive experiences and industrial training. However, existing AR headband structures have significant technical shortcomings:

[0003] First, there is insufficient adaptability. Most headbands use fixed sizes or simple buckle adjustments, which cannot accurately fit the head contours of different users (such as differences in front width and side curves). This can easily lead to localized gaps, causing the headband to loosen, or excessive tightness, causing discomfort. Second, there is poor wearing comfort. The back of the head is mostly made of rigid support or a single cushioning design, lacking a dynamic cushioning structure for head movements. Prolonged wear can easily cause localized pressure. Third, the display stability is poor. The connection between the display module and the frame of some headbands is not rigid enough. When the head is tilted down or turned, the angle is easily shifted, affecting the visual continuity of the AR image.

[0004] These issues make it difficult for existing headbands to meet users' comprehensive needs for fitting accuracy, comfort, durability, and display reliability. There is an urgent need to optimize the structural design to solve the pain points of narrow fitting range, insufficient cushioning, and display misalignment. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a headband structure for an AR display module, including two support frames extending rearward from both sides of the top of the display module. The ends of the two support frames away from the display module are fitted with hoop plates parallel to the support frames. Each end of the two hoop plates facing the display module is fitted with a bendable and deformable first shape memory alloy plate. An outer frame perpendicular to the hoop plates is provided on the outer wall of the two hoop plates, and an adjustment plate parallel to the hoop plates is installed at the end of the outer frame. The angle between the display module, support frames, hoop plates, outer frame, and adjustment plate is fixed. A movable adjustment element is installed on the adjustment plate, which movably pushes the first shape memory alloy plate to bend and deform. The ends of the two hoop plates away from the display module are fitted with second shape memory alloy plates that bend and extend inward. The ends of the second shape memory alloy plates away from the hoop plates are fitted with bendable and deformable third shape memory alloy plates.

[0006] In a preferred embodiment, both the second and third memory alloys are arc-shaped, and the second and third memory alloy plates on the same side are arranged in a "Y" shape, with the end of the third memory alloy plate fixedly connected to the end of the adjustment plate.

[0007] In a preferred embodiment, two metal fixing plates with inward bending extensions are installed on the inner walls of the two adjacent hoop plates. The angle between the metal fixing plates and the hoop plates is fixed. The metal fixing plates are located on the inner side of the second shape memory alloy plate facing the display module. Rubber sheets are connected to the front ends of the two adjacent metal fixing plates. An arc-shaped rear pressure plate is connected between the two rubber sheets. Foam is attached to the side of the rear pressure plate facing the display module.

[0008] In a preferred embodiment, there are two third shape memory alloy plates. A straight baffle is installed at the end of the two third shape memory alloy plates that are close to each other. The baffle is located on the side of the rear pressure plate away from the display module. An adjustment spring is installed on the outer wall of the baffle facing the rear pressure plate. The other end of the adjustment spring is fixed to the outer wall of the rear pressure plate.

[0009] In a preferred embodiment, the adjusting spring is externally fitted with a rubber hose, and the two ends of the rubber hose are respectively connected to the rear pressure plate and the baffle.

[0010] In a preferred embodiment, a rubber pad layer is attached to the inner sidewall of the first shape memory alloy plate.

[0011] In a preferred embodiment, the adjusting member includes a screw tube mounted on the adjusting plate and an adjusting rod inserted into the screw tube. The adjusting rod extends through the adjusting plate to the outer wall of the first memory alloy plate. The end of the adjusting rod facing the first memory alloy plate is hemispherical, and a knob is installed at the end of the adjusting rod away from the first memory alloy plate.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention uses an adjustable component to drive the first memory alloy plate to bend independently and precisely fit the front contour of the head. The second and third memory alloy plates, which are in the shape of a "Y" arc, fit tightly against the side of the head. The foam and rubber sheet at the back of the head work together with the adjusting spring to buffer the pressure and improve the wearing experience. The overall design has a wide range of fit, is easy to operate, and is comfortable and durable. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Fig. 2 This is a schematic diagram of the structure of this utility model from another angle.

[0016] Explanation of reference numerals in the attached drawings: 1 Display module, 2 Support frame, 3 Hoop plate, 4 First shape memory alloy plate, 5 Outer frame, 6 Adjustment plate, 7 Second shape memory alloy plate, 8 Third shape memory alloy plate, 9 Metal fixing plate, 10 Rubber sheet, 11 Rear pressure plate, 12 Foam, 13 Baffle, 14 Adjustment spring, 15 Rubber hose, 16 Adjustment rod, 17 Screw tube, 18 Knob, 19 Rubber pad. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] like Figs. 1-2 The headband structure shown includes two support frames 2 extending rearward from both sides of the top of the display module 1. The ends of the two support frames 2 away from the display module 1 are fitted with hoop plates 3 parallel to the support frames 2. Each end of the hoop plates 3 facing the display module 1 is fitted with a bendable and deformable first shape memory alloy plate 4. An outer frame 5 perpendicular to the hoop plates 3 is provided on the outer wall of the two hoop plates 3, and an adjustment plate 6 parallel to the hoop plates 3 is installed at the end of the outer frame 5. The angle between the display module 1, support frames 2, hoop plates 3, outer frame 5, and adjustment plate 6 is fixed. A movable adjustment element is installed on the adjustment plate 6, which movably pushes the first shape memory alloy plate 4 to bend and deform. The ends of the two hoop plates 3 away from the display module 1 are fitted with second shape memory alloy plates 7 that bend and extend inward. The ends of the second shape memory alloy plates 7 away from the hoop plates 3 are fitted with a bendable and deformable third shape memory alloy plate 8.

[0019] Based on the above, the support frame 2 extends backward from both sides of the top of the display module 1 to provide stable support for the headband 3; the headband 3 serves as the main frame of the headband, and its first shape memory alloy plate 4 facing the display module 1 can be bent and deformed. The adjustment plate 6 is fixed by the outer frame 5, and the adjustment component is installed on the adjustment plate 6. By moving the first shape memory alloy plate 4, the headband's front circumference can be adjusted; the second shape memory alloy plate 7 of the headband 3 away from the display module 1 bends inward and cooperates with the third shape memory alloy plate 8 to cover the side of the head; the angles of the display module 1, support frame 2, headband 3, outer frame 5, and adjustment plate 6 are fixed to ensure the stability of the display module 1 and prevent the image from shifting when worn.

[0020] Furthermore, the first memory alloy plate 4 is driven to deform independently by the adjustment component, so that it can adapt to the front contour of the head without adjusting the angle of the hoop plate 3. The vertical setting of the outer frame 5 and the adjustment plate 6 ensures the stability of the adjustment structure. The fixed angle design takes into account both display stability and headband support, adapting to the different head front adaptation needs of users.

[0021] The second memory alloy plate 7 and the third memory alloy plate 8 are both arc-shaped. The second memory alloy plate 7 and the third memory alloy plate 8 located on the same side are arranged in a "Y" shape. The end of the third memory alloy plate 8 is fixedly connected to the end of the adjustment plate 6.

[0022] Based on the above, the arc-shaped structure of the second memory alloy plate 7 and the third memory alloy plate 8 can conform to the curve of the side of the head, avoiding the hard edges from hurting the skin; the end of the third memory alloy plate 8 is fixed to the adjustment plate 6, forming a linkage frame of "adjustment plate 6-third memory alloy plate 8-second memory alloy plate 7-hoop plate 3". The "Y"-shaped distribution allows the outer third memory alloy plate to provide a certain pressure and support to the inner second memory alloy plate, while also accepting a certain elastic deformation, causing the second memory alloy plate 7 to adapt to the contour of the side of the head, ensuring a good fit.

[0023] Furthermore: the arc-shaped structure enhances wearing comfort, the "Y"-shaped distribution expands the coverage area of ​​the head side, provides a certain amount of pressure to supplement the fit, and avoids local suspension; the fixed connection between the third memory alloy plate 8 and the adjustment plate 6 enhances the overall structure, making the headband more flexible in side fit and covering different head side contours.

[0024] Metal fixing plates 9 that bend inward are installed on the inner walls of the two adjacent hoop plates 3. The angle between the metal fixing plates 9 and the hoop plates 3 is fixed. The metal fixing plates 9 are located on the inner side of the second memory alloy plate 7 facing the display module 1. Rubber sheets 10 are connected to the front ends of the two adjacent metal fixing plates 9. An arc-shaped rear pressure plate 11 is connected between the two rubber sheets 10. Foam 12 is attached to the side of the rear pressure plate 11 facing the display module 1.

[0025] Based on the above, the metal fixing plate 9 is fixed to the inner wall of the hoop plate 3 at a constant angle, providing a support base for the rear pressure plate 11. It is located inside the second memory alloy plate 7 to avoid functional conflicts with the memory alloy plate. The rubber sheet 10 connects the metal fixing plate 9 and the rear pressure plate 11, and has flexible deformation capability to adapt to the subtle contour differences of the back of the head. The arc-shaped structure of the rear pressure plate 11 fits the curve of the back of the head, and the foam 12 is in direct contact with the skin, which can disperse the local pressure of the rear pressure plate 11 on the back of the head and prevent hard parts from hurting the skin.

[0026] Furthermore, the metal fixing plate 9 ensures stable support for the rear pressure plate 11, the flexible design of the rubber sheet 10 reduces local pressure, and the foam 12 improves the comfort of the back of the head. The three work together to solve the problem of strong pressure on the back of the head with traditional headbands and are suitable for long-term wear.

[0027] There are two third memory alloy plates 8. A straight baffle 13 is installed at the end of the two third memory alloy plates 8 that are close to each other. The baffle 13 is located on the side of the rear pressure plate 11 away from the display module 1. An adjusting spring 14 is installed on the outer wall of the baffle 13 facing the rear pressure plate 11. The other end of the adjusting spring 14 is fixed to the outer wall of the rear pressure plate 11.

[0028] Based on the above, the baffles 13 near the ends of the two third memory alloy plates 8 are flat, providing fixed support for the adjusting spring 14; the baffles 13 are located outside the rear pressure plate 11 to avoid obstructing the contact between the rear pressure plate 11 and the head; the adjusting spring 14 connects the baffles 13 and the rear pressure plate 11. When the head moves or there is a slight dimensional deviation in the headband, the adjusting spring 14 absorbs the impact force by stretching or compressing, relieving the tightness of the rear pressure plate 11 on the back of the head, while not affecting the adaptive bending function of the third memory alloy plates 8.

[0029] Furthermore, the adjustable spring 14 can dynamically buffer the pressure on the back of the head to avoid discomfort when the head moves. The flat design of the baffle 13 ensures that the spring is fixed and stable. The two work together to improve the dynamic wearing comfort of the headband and adapt to the user's activities such as looking down and turning their head.

[0030] The adjusting spring 14 is fitted with a rubber hose 15, and the two ends of the rubber hose 15 are connected to the rear pressure plate 11 and the baffle 13 respectively.

[0031] Based on the above, the rubber hose 15 is sleeved on the outside of the adjusting spring 14, and its two ends are fixed on the rear pressure plate 11 and the baffle 13 respectively, forming a closed protective space; this can prevent the adjusting spring 14 from directly contacting the skin and causing friction discomfort, while blocking external dust and hair from entering the spring gap, preventing the spring from jamming and affecting its elasticity, and ensuring the long-term stable operation of the adjusting spring 14.

[0032] A rubber pad 19 is attached to the inner wall of the first memory alloy plate 4. When the adjusting member pushes the first memory alloy plate 4 to bend and deform, the rubber pad 19 directly contacts the skin in front of the head, reducing the friction of the edge of the memory alloy plate to the skin and improving the comfort of contact.

[0033] The adjusting component includes a screw tube 17 mounted on the adjusting plate 6 and an adjusting rod 16 inserted into the screw tube 17. The adjusting rod 16 extends through the adjusting plate 6 to the outer wall of the first memory alloy plate 4. The end of the adjusting rod 16 facing the first memory alloy plate 4 is set in a hemispherical shape, and a knob 18 is installed at the end of the adjusting rod 16 away from the first memory alloy plate 4.

[0034] Based on the above, the solenoid 17 is fixed on the adjusting plate 6 and forms a threaded engagement with the adjusting rod 16; rotating the knob 18 can drive the adjusting rod 16 to move axially along the solenoid 17, and the adjusting rod 16 extends through the adjusting plate 6 to the outer wall of the first memory alloy plate 4; its hemispherical end can smoothly push the first memory alloy plate 4 to bend, avoiding damage to the memory alloy plate by the sharp end; when the knob 18 is rotated clockwise, the adjusting rod 16 extends to push the plate to bend, and when it is rotated counterclockwise, the adjusting rod 16 retracts, realizing precise adjustment, convenient operation, and adjustment can be completed without tools, adapting to the needs of different users quickly.

[0035] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A headband structure for an AR display module, comprising two support frames extending rearward from both sides of the top of the display module, wherein a hoop plate parallel to the support frames is installed at the ends of the two support frames away from the display module, characterized in that, Two hoop plates are each fitted with a first shape memory alloy plate that can be bent and deformed at the ends facing the display module. An outer frame perpendicular to the hoop plates is provided on the outer wall of the two hoop plates that are far apart from each other. An adjustment plate parallel to the hoop plates is installed at the end of the outer frame. The angle between the display module, the support frame, the hoop plates, the outer frame and the adjustment plate is fixed. A movable adjustment component is installed on the adjustment plate. The adjustment component moves to push the first shape memory alloy plate to bend and deform. A second shape memory alloy plate that bends and extends inward is provided at the ends of the two hoop plates that are far away from the display module. A third shape memory alloy plate that can be bent and deformed is installed at the end of the second shape memory alloy plate that is far away from the hoop plates.

2. The headband structure for an AR display module according to claim 1, characterized in that: Both the second and third memory alloys are arc-shaped. The second and third memory alloy plates on the same side are arranged in a "Y" shape, and the end of the third memory alloy plate is fixedly connected to the end of the adjustment plate.

3. A headband structure for an AR display module according to claim 2, characterized in that: On the inner walls of the two adjacent hoop plates, there are metal fixing plates that bend inward and extend outward. The angle between the metal fixing plates and the hoop plates is fixed. The metal fixing plates are located on the inner side of the second memory alloy plate facing the display module. There are rubber sheets connected to the front ends of the two adjacent metal fixing plates. There is an arc-shaped back pressure plate connected between the two rubber sheets. Foam is attached to the side of the back pressure plate facing the display module.

4. A headband structure for an AR display module according to claim 3, characterized in that: There are two third memory alloy plates. A straight baffle is installed at the end of the two third memory alloy plates that are close to each other. The baffle is located on the side of the rear pressure plate away from the display module. An adjustment spring is installed on the outer wall of the baffle facing the rear pressure plate. The other end of the adjustment spring is fixed to the outer wall of the rear pressure plate.

5. A headband structure for an AR display module according to claim 4, characterized in that: The adjusting spring is fitted with a rubber hose, and the two ends of the rubber hose are connected to the rear pressure plate and the baffle, respectively.

6. A headband structure for an AR display module according to claim 1, characterized in that: A rubber pad layer is attached to the inner wall of the first shape memory alloy plate.

7. A headband structure for an AR display module according to claim 2, characterized in that: The adjusting component includes a screw tube mounted on the adjusting plate and an adjusting rod inserted into the screw tube. The adjusting rod extends through the adjusting plate to the outer wall of the first memory alloy plate. The end of the adjusting rod facing the first memory alloy plate is set in a hemispherical shape, and a knob is installed at the end of the adjusting rod away from the first memory alloy plate.

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