Pupil distance adjusting mechanism for VR glasses and VR glasses

Abstract

The utility model relates to the field of VR glasses, and discloses a VR glasses interpupillary distance adjusting mechanism and VR glasses, and the VR glasses interpupillary distance adjusting mechanism comprises a fixed part, a rotating part and a moving part; a first cavity is formed in the fixing part, first internal threads are arranged on the inner wall of the first cavity, the rotating part is installed in the first cavity and is in threaded fit with the first internal threads through first external threads arranged on the outer wall of the rotating part, and the first internal threads and the first external threads are matched to form a first thread pair; a second cavity is formed in the rotating part, second internal threads are arranged on the inner wall of the second cavity, the moving part is installed in the second cavity, second external threads are arranged on the outer wall of the moving part, and the second internal threads and the second external threads are matched to form a second thread pair; the moving part is used for being fixedly connected with a lens, the thread turning directions of the first thread pair and the second thread pair are opposite, and the first thread pair and the second thread pair are coaxially arranged; the thread pitch of the first thread pair is larger than that of the second thread pair. The adjusting mechanism has the advantages of high precision, convenience in control and the like.

Description

Technical Field

[0001] This utility model relates to the field of VR glasses, and mainly to a VR glasses interpupillary distance adjustment mechanism and VR glasses. Background Technology

[0002] Interpupillary distance (IPD) refers to the distance between the pupils of both eyes. This distance varies from person to person and is not fixed.

[0003] For VR glasses, adjusting the interpupillary distance is crucial for the following reasons:

[0004] 1. Visual clarity: Adjusting the interpupillary distance ensures that the center of the human eye's pupil, the center of the lens, and the center of the screen are on a straight line, thus obtaining a clear visual effect.

[0005] 2. Avoid visual fatigue and dizziness: Inaccurate interpupillary distance settings may cause visual fatigue and dizziness.

[0006] 3. Adaptable to different users: Interpupillary distance varies with age and individual differences, and the interpupillary distance adjustment function can adapt to the needs of different users.

[0007] Chinese patent CN205750124U discloses a VR glasses with adjustable viewing distance, but the adjustment structure is complex, occupies a lot of space, and greatly increases the weight of the frame. Utility Model Content

[0008] This invention addresses the shortcomings of existing technologies by providing a VR glasses interpupillary distance adjustment mechanism.

[0009] A VR glasses interpupillary distance adjustment mechanism includes a fixed part, a rotating part, and a moving part;

[0010] The fixed part has a cavity 1 inside, and the inner wall of the cavity 1 has an internal thread 1. The rotating part is installed in the cavity 1 and is threaded with the internal thread 1 through the external thread 1 on the outer wall. The internal thread 1 and the external thread 1 cooperate to form a threaded pair 1.

[0011] The rotating part has a cavity two inside, and the inner wall of the cavity two has an internal thread two. The moving part is installed in the cavity two and the outer wall has an external thread two. The internal thread two and the external thread two cooperate to form a threaded pair two.

[0012] The movable part is used for fixed connection with the lens. The threads of threaded pair one and threaded pair two have opposite directions and are coaxial. The pitch of threaded pair one is greater than the pitch of threaded pair two.

[0013] Preferably, the fixed part is externally connected to a drive device, which is a motor assembly that drives the rotating part to rotate.

[0014] Preferably, the fixed part is externally connected to a manual adjustment structure, and rotating the manual adjustment structure drives the rotating part to rotate.

[0015] Preferably, the rotating part is provided with a mounting groove, the output shaft of the motor assembly is installed in the mounting groove and both are circumferentially fixed, and the axis of the output shaft coincides with the axial direction of the threaded pair.

[0016] Preferably, the cross-section of the mounting groove is triangular, elliptical, convex polygonal, or concave polygonal.

[0017] VR glasses include a frame and lenses. The frame has a mounting groove, which is a through groove. The VR glasses also include the aforementioned interpupillary distance adjustment mechanism. The fixing part is fixedly installed in the mounting groove, and the lenses are connected to the moving part.

[0018] Preferably, the movable part is provided with a mounting strip extending outside the mounting groove, and the lens is mounted on the mounting strip.

[0019] Compared with existing technologies, this solution has the following advantages: it uses the differential principle to adjust the interpupillary distance of VR glasses, which has high adjustment accuracy, and its overall cylindrical shape occupies very little space and will not affect the appearance design of existing VR glasses. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the glasses.

[0021] Figure 2 for Figure 1 A sectional view.

[0022] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0023] The technical names of the reference numerals in the figure are as follows: 1—fixed part, 2—rotating part, 3—moving part, 4—cavity one, 5—internal thread one, 6—external thread one, 7—internal thread two, 8—external thread two, 9—cavity two, 10—drive device, 11—mounting groove, 12—output shaft, 13—frame, 14—lens, 15—mounting strip. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] A VR glasses interpupillary distance adjustment mechanism includes a fixed part 1, a rotating part 2, and a moving part 3. In this embodiment, the fixed part 1, the rotating part 2, and the moving part 3 are all cylindrical structures and are installed in layers, so the internal axis of the three is designed to be coaxial.

[0027] The fixing part 1 has a cavity 4 inside, and the inner wall of the cavity 4 has an internal thread 5. The rotating part 2 is installed in the cavity 4 and is threaded with the internal thread 5 through an external thread 6 on its outer wall. The internal thread 5 and the external thread 6 cooperate to form a threaded pair. When in use, the fixing part 1 is fixedly installed in the eyeglass frame 13 and does not rotate.

[0028] The rotating part 2 has a cavity 9 inside, and the inner wall of the cavity 9 has an internal thread 7. The moving part 3 is installed in the cavity 9 and has an external thread 8 on its outer wall. The internal thread 7 and the external thread 8 cooperate to form a threaded pair 2. The rotating part 2 will rotate in the cavity 4 through cooperation with the internal thread 5.

[0029] The movable part 3 is used to fix it to the lens 14. Since the movable part 3 and the rotating part 2 are threadedly connected, the threads of the first thread pair and the second thread pair are in opposite directions and are coaxially arranged. The pitch of the first thread pair is greater than the pitch of the second thread pair. Therefore, when the rotating part 2 rotates forward, it will drive the movable part 3 to move in the opposite direction. Thus, the movable part 3 moves axially to adjust the pitch. The distance of adjustment for each revolution is the pitch of the first thread pair minus the pitch of the second thread pair.

[0030] In this embodiment, a drive device 10 is externally connected to the fixed part 1. The drive device 10 is a motor assembly, which drives the rotating part 2 to rotate. This enables electric adjustment and facilitates user operation.

[0031] In this embodiment, the rotating part 2 is provided with a mounting groove 11, and the output shaft 12 of the motor assembly is installed in the mounting groove 11 and the two are circumferentially fixed. The axis of the output shaft 12 coincides with the axis of the threaded pair 1. The circumferential fixation prevents slippage.

[0032] Specifically, the cross-section of the mounting groove 11 can be triangular, elliptical, convex polygonal, or concave polygonal; in short, its cross-section can be a non-circular structure. In this design, it is a triangular prism structure.

[0033] During operation, when the motor assembly rotates clockwise, it drives the rotating part 2 to rotate. The motor assembly, through a non-circular contour structure and a screw, ensures that the rotating part 2 rotates synchronously. Under the action of the first threaded pair, the rotating part 2 moves towards the center of the frame. One rotation of the rotating part 2 moves one pitch P1. During the forward rotation of the rotating part 2, due to the presence of the inner moving part 3 and the second threaded pair of the rotating part 2, the moving part 3 moves in the opposite direction. The distance moved by the moving part 3 in one rotation of the rotating part 2 is P2, where P1 is greater than P2. Therefore, the distance moved by the moving part 3 relative to the frame 13 in one rotation is P2 - P1. This differential adjustment precisely adjusts the pupillary distance to match the user's pupillary distance.

[0034] Example 2

[0035] In this embodiment, the fixed part 1 is externally connected to a manual adjustment structure, which replaces the motor rotation. Rotating the manual adjustment structure drives the rotating part 2 to rotate, thereby saving costs and reducing the overall weight.

[0036] Example 3

[0037] VR glasses include a frame 13 and lenses 14. The frame 13 has a mounting groove 11, which is a through groove. It also includes the aforementioned VR glasses interpupillary distance adjustment mechanism. The fixing part 1 is fixedly installed in the mounting groove 11, and the lenses 14 are connected to the moving part 3.

[0038] The movable part 3 is provided with a mounting strip 15 extending outside the mounting groove 11, and the lens 14 is mounted on the mounting strip 15.

[0039] This type of VR glasses uses the differential principle to adjust the interpupillary distance, which has high adjustment precision. Moreover, it is cylindrical in shape, occupies very little space, and will not affect the appearance design of existing VR glasses.

[0040] During operation, when the motor assembly rotates clockwise, it drives the rotating part 2 to rotate. The motor assembly, through a non-circular contour structure and a screw, ensures that the rotating part 2 rotates synchronously. Under the action of the first threaded pair, the rotating part 2 moves towards the center of the frame. One rotation of the rotating part 2 moves one pitch P1. During the forward rotation of the rotating part 2, due to the presence of the inner moving part 3 and the second threaded pair of the rotating part 2, the moving part 3 moves in the opposite direction. The distance moved by the moving part 3 in one rotation of the rotating part 2 is P2, where P1 is greater than P2. Therefore, the distance moved by the moving part 3 relative to the frame 13 in one rotation is P2 - P1. This differential adjustment precisely adjusts the pupillary distance to match the user's pupillary distance.

Claims

1. A VR glasses interpupillary distance adjustment mechanism, characterized in that: It includes a fixed part (1), a rotating part (2), and a moving part (3); The fixed part (1) has a cavity (4) inside. The inner wall of the cavity (4) is provided with an internal thread (5). The rotating part (2) is installed in the cavity (4) and is threaded with the internal thread (5) through the external thread (6) on the outer wall. The internal thread (5) and the external thread (6) cooperate to form a threaded pair. The rotating part (2) has a cavity two (9) inside. The inner wall of the cavity two (9) is provided with an internal thread two (7). The moving part (3) is installed in the cavity two (9) and the outer wall is provided with an external thread two (8). The internal thread two (7) and the external thread two (8) cooperate to form a threaded pair two. The movable part (3) is used to fix the lens (14). The threads of thread pair one and thread pair two are opposite in direction and are coaxial. The pitch of thread pair one is greater than the pitch of thread pair two.

2. The VR glasses interpupillary distance adjustment mechanism according to claim 1, characterized in that: The fixed part (1) is connected to a drive device (10), which is a motor assembly. The motor assembly drives the rotating part (2) to rotate.

3. The VR glasses interpupillary distance adjustment mechanism according to claim 2, characterized in that: The fixed part (1) is connected to a manual adjustment structure. Rotating the manual adjustment structure drives the rotating part (2) to rotate.

4. The VR glasses interpupillary distance adjustment mechanism according to claim 2, characterized in that: The rotating part (2) is provided with a mounting groove (11), the output shaft (12) of the motor assembly is installed in the mounting groove (11) and the two are circumferentially fixed, and the axis of the output shaft (12) coincides with the axis of the threaded pair.

5. The VR glasses interpupillary distance adjustment mechanism according to claim 4, characterized in that: The cross-section of the mounting groove (11) is triangular, elliptical, or concave polygonal.

6. VR glasses, including a frame (13) and lenses (14), characterized in that: The frame (13) is provided with a mounting groove (11), which is a through groove. It also includes a VR glasses interpupillary distance adjustment mechanism as described in any one of claims 1 to 5. The fixing part (1) is fixedly installed in the mounting groove (11), and the lens (14) is connected to the moving part (3).

7. The VR glasses according to claim 6, characterized in that: The movable part (3) is provided with a mounting strip (15) extending outside the mounting groove (11), and the lens (14) is mounted on the mounting strip (15).

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