Pupil distance adjustment mechanism of AR glasses

Abstract

The utility model discloses a kind of pupil distance adjusting mechanisms of AR glasses, specifically related to AR glasses field, including adjusting box, a pair of left and right arrangement adjusting grooves are arranged in the hollow bottom of adjusting box, the inside of adjusting box is provided with adjusting assembly, the adjusting assembly includes a pair of sliding blocks, and the bottom of a pair of sliding blocks is fixedly installed with optical display assembly. The elastic force of volute spring acts on winding roller, so that the dustproof belt between a pair of winding rollers can be attached in the internal path groove in tension state, cover adjusting groove, and when sliding block moves left and right, it will drive dustproof belt to move together, and when moving, one side winding roller winds dustproof belt on surface under the elastic force of volute spring, and the other side winding roller releases dustproof belt with the movement of sliding block;Dustproof belt covers adjusting groove all the time by winding and unwinding mode, so as to achieve the effect that dust does not enter the inside of adjusting box through adjusting groove, prevent dust from adhering on threaded rod.

Description

Technical Field

[0001] This utility model relates to the field of AR glasses technology, specifically an interpupillary distance adjustment mechanism for AR glasses. Background Technology

[0002] Augmented Reality (AR) technology is a cutting-edge technology for the fusion of the virtual and the real. AR glasses need to accurately overlay virtual images onto real scenes through optical display components. However, there are individual differences in the interpupillary distance (IPD) between different users (adult IPD is usually in the range of 58-70mm). Therefore, the IPD adjustment mechanism is one of the core components of AR glasses, and its performance directly affects the accuracy of visual fusion and user experience.

[0003] In existing technologies, manual interpupillary distance (IPD) adjustment in AR glasses often employs a structure with a bidirectional threaded rod and sliding blocks. Rotating the adjustment mechanism drives the bidirectional threaded rod to rotate, causing the sliding blocks on both sides to move the optical display components towards or away from each other to accommodate different users' IPDs. However, in such designs, an adjustment groove is typically provided at the bottom of the adjustment box to prevent the sliding blocks from moving. External dust can easily enter the adjustment box through this groove. Once dust adheres to the surface of the bidirectional threaded rod, it can cause the threaded transmission to jam, reducing adjustment accuracy and even leading to adjustment failure. Therefore, the inventors provide an IPD adjustment mechanism for AR glasses to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide an interpupillary distance adjustment mechanism for AR glasses, thereby preventing dust from entering the adjustment box through the adjustment slot and preventing dust from adhering to the threaded rod.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An interpupillary distance adjustment mechanism for AR glasses includes an adjustment box. The adjustment box has a hollow interior with a pair of left-right arranged adjustment slots at its bottom. An adjustment assembly is installed inside the adjustment box, including a pair of sliding blocks. An optical display component is fixedly mounted on the bottom of the sliding blocks. A dustproof mechanism is installed inside the adjustment slots, including a path groove with mirror-symmetrical left and right ends that curve upwards. Both ends of the path groove penetrate the bottom inner side of the adjustment box. Two pairs of take-up rollers are installed inside the adjustment box, both arranged left-right, with their front and rear sides rotatably connected to the inner wall of the adjustment box. A dustproof strip is fixedly connected to the outer side of each sliding block. The dustproof strip is laid along the path groove on both sides, with its ends extending upwards and fixedly connected to the corresponding take-up roller surface, partially wrapping around the take-up roller surface.

[0007] As a further embodiment of this utility model: the adjustment assembly includes a bidirectional threaded rod that is rotatably connected to the left and right sides inside the adjustment box, and the outer side of the bidirectional threaded rod is threadedly connected to the sliding block; a driven bevel tooth is fixedly connected to the outer side of the bidirectional threaded rod, and a driving bevel tooth is vertically engaged at the top of the driven bevel tooth; a rotatable rotating rod is fixedly connected to the top of the driving bevel tooth, and the top of the rotating rod penetrates the adjustment box and is rotatably connected to the surface of the adjustment box.

[0008] As a further improvement of this utility model: a pair of T-shaped slide rails arranged on the left and right sides are fixedly connected to the top inner side of the adjustment box, and the T-shaped slide rails are slidably connected to the corresponding sliding blocks.

[0009] As a further embodiment of this utility model: Slide grooves are respectively provided on the left and right sides of the rotating rod, and sliders are slidably connected inside the two slide grooves respectively. A knob is fixedly connected to the outer side of the two sliders. A fixing ring is fixedly connected to the outer side of the rotating rod, and a connecting spring is fixedly connected to the top of the fixing ring. The top of the connecting spring is fixedly connected to the knob. A wrapping ring is fixedly connected to the top of the adjusting box, enclosing the rotating rod. A set of circumferentially arranged slots are provided on the top of the wrapping ring. A locking block is fixedly connected to the outer side of the knob, and the locking block is inserted into one of the slots.

[0010] As a further embodiment of this utility model: a connecting ring is provided on the outer side of the take-up roller, the connecting ring is fixedly connected to the inner rear wall of the adjusting box, a worm spring is provided inside the connecting ring, the outer end of the worm spring is fixedly connected to the connecting ring, and the inner end of the worm spring is fixedly connected to the surface of the take-up roller.

[0011] As a further improvement of this utility model, the dustproof strip is made of TPU film.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The interpupillary distance adjustment mechanism of this AR glasses uses the elastic force of a spiral spring to act on the take-up rollers, ensuring that the dustproof tape between a pair of take-up rollers is taut and adheres to the inside of the path groove, covering the adjustment groove. When the sliding block moves left and right, it moves the dustproof tape along with it. During this movement, one take-up roller, under the elastic force of the spiral spring, winds up the dustproof tape onto the surface, while the other take-up roller unwinds the dustproof tape as the sliding block moves. Through this winding and unwinding process, the dustproof tape continuously covers the adjustment groove, thereby preventing dust from entering the adjustment box through the adjustment groove and preventing dust from adhering to the threaded rod.

[0014] In addition, the interpupillary distance adjustment mechanism of the AR glasses first pulls the knob upward. The movement of the knob causes the locking block to disengage from the slot and causes the slider to slide along the slide groove, causing the connecting spring to deform. Then, the knob is rotated, thereby driving the rotating rod and the active bevel gear to rotate. Through the transmission between the active bevel gear and the driven bevel gear, the bidirectional threaded rod rotates, thereby driving the two sliding blocks and the two optical display components to move towards or away from each other, thereby achieving the effect of adjusting the interpupillary distance of the AR glasses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an interpupillary distance adjustment mechanism for AR glasses.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the adjustment box in the interpupillary distance adjustment mechanism of an AR glasses.

[0017] Figure 3 This is a schematic diagram of the cross-section of the adjustment box in the interpupillary distance adjustment mechanism of an AR glasses from another perspective.

[0018] Figure 4 This is a schematic diagram of the knob structure in the interpupillary distance adjustment mechanism of an AR glasses.

[0019] Figure 5 This is a schematic diagram of the dustproof mechanism in the interpupillary distance adjustment mechanism of an AR glasses.

[0020] In the diagram: 10. Adjustment box; 11. Optical display assembly; 12. Adjustment groove; 20. Adjustment assembly; 201. Bidirectional threaded rod; 202. T-shaped slide rail; 203. Sliding block; 204. Driven bevel gear; 205. Driving bevel gear; 206. Rotating rod; 207. Knob; 208. Slide groove; 209. Slider; 210. Fixing ring; 211. Connecting spring; 212. Wrapping ring; 213. Slot; 214. Locking block; 30. Dustproof mechanism; 301. Path groove; 302. Take-up roller; 303. Dustproof belt; 304. Connecting ring; 305. Snail spring. Detailed Implementation

[0021] like Figures 1-5 As shown, an interpupillary distance adjustment mechanism for AR glasses includes an adjustment box 10. The adjustment box 10 has a hollow interior with a pair of left-right arranged adjustment slots 12 at the bottom. An adjustment component 20 is provided inside the adjustment box 10. The adjustment component 20 includes a bidirectional threaded rod 201 that is rotatably connected to the left and right sides inside the adjustment box 10. A sliding block 203 is threaded to the outer side of the bidirectional threaded rod 201. The two sliding blocks 203 extend downward through the corresponding adjustment slots 12, and a pair of optical display components 11 are fixedly connected to the bottom of the two sliding blocks 203 by a mounting component.

[0022] Specifically, a driven bevel tooth 204 is fixedly connected to the outer side of the bidirectional threaded rod 201. The top of the driven bevel tooth 204 is vertically engaged with a driving bevel tooth 205. The top of the driving bevel tooth 205 is fixedly connected to a rotatable rotating rod 206. The top of the rotating rod 206 passes through the adjusting box 10 and is rotatably connected to the surface of the adjusting box 10.

[0023] Preferably, a pair of T-shaped slide rails 202 arranged left and right are fixedly connected to the inner top of the adjustment box 10, and the T-shaped slide rails 202 are slidably connected to the corresponding sliding block 203; thereby achieving the effect of guiding the sliding block 203 and the corresponding optical component 11 when they move.

[0024] Furthermore, the rotating rod 206 has sliding grooves 208 on its left and right sides respectively, and sliders 209 are slidably connected inside the two sliding grooves 208 respectively. A knob 207 is fixedly connected to the outer side of the two sliders 209. A fixing ring 210 is fixedly connected to the outer side of the rotating rod 206. A connecting spring 211 is fixedly connected to the top of the fixing ring 210. The top of the connecting spring 211 is fixedly connected to the knob 207. A wrapping ring 212 that wraps around the rotating rod 206 is fixedly connected to the top of the adjusting box 10. A set of circumferentially arranged slots 213 are opened on the top of the wrapping ring 212. A locking block 214 is fixedly connected to the outer side of the knob 207. The locking block 214 is inserted into a slot 213.

[0025] After the user puts on the AR glasses, if it is necessary to adjust the interpupillary distance (IPD), first pull up the knob 207. The movement of the knob 207 causes the locking block 214 to disengage from the slot 213, and causes the slider 209 to slide along the slide groove 208, causing the connecting spring 211 to deform. Then, rotate the knob 207, thereby driving the rotating rod 206 and the active bevel gear 205 to rotate. Through the transmission between the active bevel gear 205 and the driven bevel gear 204, the bidirectional threaded rod 201 rotates, thereby driving the two sliding blocks 203 and the two optical display components 11 to move towards or away from each other, thus achieving the effect of adjusting the IPD of the AR glasses. The reason for adjusting the IPD is that the distance between the centers of the pupils of each person's eyes (interpupillary distance) is different (usually 58-70mm for adults). If the spacing of the optical display components does not match the user's actual IPD, the images received by the eyes will not be accurately fused, resulting in problems such as ghosting and blurring. Long-term use can also cause dizziness and visual fatigue, seriously affecting the immersion and comfort of the AR experience.

[0026] After adjustment, releasing knob 207 causes spring 211 to rebound, moving knob 207 downwards and inserting block 214 into slot 213, thus positioning knob 207 and consequently positioning the bidirectional threaded rod 201, sliding block 203, and optical display assembly 11. This achieves the positioning effect after adjusting the interpupillary distance of the AR glasses.

[0027] During the use of the AR glasses, dust can easily enter the interior of the adjustment box 10 from the position of the adjustment slot 12. The surface of the bidirectional threaded rod 201 is prone to jamming after contact with dust, which affects the accuracy of adjusting the interpupillary distance. Therefore, a dustproof mechanism 30 is proposed.

[0028] refer to Figures 2-5 The dustproof mechanism 30 includes a path groove 301 with an adjustment groove 12 inside. The left and right ends of the path groove 301 are mirror symmetrical and curved upwards. The two ends of the path groove 301 penetrate the bottom of the inner side of the adjustment box 10. The adjustment box 10 is provided with two pairs of take-up rollers 302. The two pairs of take-up rollers 302 are arranged left and right, and the front and rear sides of the take-up rollers 302 are rotatably connected to the inner wall of the adjustment box 10 respectively. A dustproof belt 303 is fixedly connected to the outer side of the sliding block 203. The dustproof belt 303 is laid along the path groove 301 on both sides and extends upwards to be fixedly connected to the surface of the corresponding take-up roller 302 and partially wrapped around the surface of the take-up roller 302.

[0029] Preferably, the dustproof tape 303 is made of a 0.1-0.2mm thick TPU film, which combines flexibility and wear resistance, and can adapt to frequent bending without easily breaking; the worm spring 305 is made of 306 stainless steel, which ensures that it can still provide stable tension after long-term use and avoids sealing failure caused by loosening of the dustproof tape 303.

[0030] Preferably, a connecting ring 304 is provided on the outer side of the take-up roller 302. The connecting ring 304 is fixedly connected to the inner rear wall of the adjusting box 10. A worm spring 305 is provided inside the connecting ring 304. The outer end of the worm spring 305 is fixedly connected to the connecting ring 304, and the inner end of the worm spring 305 is fixedly connected to the surface of the take-up roller 302.

[0031] When not in use, the elastic force of the worm spring 305 acts on the take-up roller 302, so that the dustproof tape 303 between the pair of take-up rollers 302 can be tightly attached to the inside of the path groove 301, covering the adjustment groove 12. When the sliding block 203 moves left and right, it will drive the dustproof tape 303 to move together. When moving, one take-up roller 302 will roll up the dustproof tape 303 on the surface under the elastic force of the worm spring 305, while the other take-up roller 302 will unwind the dustproof tape 303 as the sliding block 203 moves. Through the winding and unwinding, the dustproof tape 303 will always cover the adjustment groove 12, thereby preventing dust from entering the adjustment box 10 through the adjustment groove 12.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An interpupillary distance adjustment mechanism for AR glasses, comprising an adjustment box (10), wherein the adjustment box (10) has a hollow interior with a pair of left-right arranged adjustment slots (12) at its bottom, characterized in that, The adjustment box (10) is equipped with an adjustment component (20), which includes a pair of sliding blocks (203). An optical display component (11) is fixedly installed at the bottom of the pair of sliding blocks (203). The adjustment slot (12) is equipped with a dustproof mechanism (30), which includes a path groove (301) that is opened inside the adjustment slot (12). The left and right ends of the path groove (301) are mirror symmetrical and have an upward curved arc shape. The two ends of the path groove (301) pass through... The bottom of the inner side of the regulating box (10); the regulating box (10) is provided with two pairs of take-up rollers (302), both pairs of take-up rollers (302) are arranged left and right, and the front and rear sides of the take-up rollers (302) are rotatably connected to the inner wall of the regulating box (10) respectively. The outer side of the sliding block (203) is fixedly connected with a dustproof belt (303). The dustproof belt (303) is laid along the path groove (301) on both sides and the ends extend upward to be fixedly connected to the surface of the corresponding take-up roller (302) and partially wrapped around the surface of the take-up roller (302).

2. The interpupillary distance adjustment mechanism for AR glasses according to claim 1, characterized in that, The adjustment assembly (20) includes a bidirectional threaded rod (201) that is rotatably connected to the left and right sides inside the adjustment box (10). The outer side of the bidirectional threaded rod (201) is threadedly connected to the sliding block (203). A driven bevel tooth (204) is fixedly connected to the outer side of the bidirectional threaded rod (201). The top of the driven bevel tooth (204) is vertically engaged with a driving bevel tooth (205). The top of the driving bevel tooth (205) is fixedly connected to a rotatable rotating rod (206). The top of the rotating rod (206) passes through the adjustment box (10) and is rotatably connected to the surface of the adjustment box (10).

3. The interpupillary distance adjustment mechanism for AR glasses according to claim 2, characterized in that, The inner top of the adjustment box (10) is fixedly connected to a pair of T-shaped slide rails (202) arranged on the left and right, and the T-shaped slide rails (202) are slidably connected to the corresponding sliding blocks (203).

4. The interpupillary distance adjustment mechanism for AR glasses according to claim 3, characterized in that, The rotating rod (206) has sliding grooves (208) on its left and right sides respectively. The two sliding grooves (208) are respectively connected to sliders (209). The two sliders (209) are fixedly connected to a knob (207) on their outer sides. The rotating rod (206) is fixedly connected to a fixing ring (210). The top of the fixing ring (210) is fixedly connected to a connecting spring (211). The top of the connecting spring (211) is fixedly connected to the knob (207). The top of the adjusting box (10) is fixedly connected to a wrapping ring (212) that wraps the rotating rod (206). The top of the wrapping ring (212) has a set of circumferentially arranged slots (213). The knob (207) is fixedly connected to a locking block (214). The locking block (214) is inserted into a slot (213).

5. The interpupillary distance adjustment mechanism for AR glasses according to claim 4, characterized in that, A connecting ring (304) is provided on the outer side of the take-up roller (302). The connecting ring (304) is fixedly connected to the inner rear wall of the adjusting box (10). A worm spring (305) is provided inside the connecting ring (304). The outer end of the worm spring (305) is fixedly connected to the connecting ring (304), and the inner end of the worm spring (305) is fixedly connected to the surface of the take-up roller (302).

6. The interpupillary distance adjustment mechanism for AR glasses according to claim 5, characterized in that, The dustproof tape (303) is made of TPU film.

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