Head-mounted display capable of adjusting relative display position with multiple degrees of freedom

Abstract

The utility model relates to a head-mounted display capable of adjusting a relative display position in multiple degrees of freedom, which comprises a forehead support assembly, a head display assembly and a connecting mechanism for connecting the head display assembly and the forehead support assembly, the connecting mechanism comprises a first joint assembly and a second joint assembly, the first joint assembly is provided with a first rotary connecting point, the second joint assembly is provided with a second rotary connecting point, and the first joint assembly and the second joint assembly are connected to form a third rotary connecting point; and the first rotary connecting point, the second rotary connecting point and the third rotary connecting point are respectively provided with a joint shaft with controllable torsion, so that the multi-degree-of-freedom adjustment of the relative display position between the head display assembly and the forehead support assembly is realized. The head display assembly and the forehead support assembly are connected through the connecting mechanism with the three rotating connecting points, the head display assembly can rotate by taking any rotating connecting point as a central point, and the purpose of multi-degree-of-freedom adjustment of the relative display position between the head display assembly and the forehead support assembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of near-eye display devices, and more particularly to a head-mounted display capable of adjusting a relative display position with multiple degrees of freedom. Background Art

[0002] Near-eye display devices use some optical imaging technologies to guide the video image light emitted by a micro-image display (such as a transmissive or reflective liquid crystal display, an organic electroluminescent device, a DMD device) to the user's pupil, realizing virtual and magnified images within the user's near-eye range, and providing the user with intuitive and visual images, videos, and text information.

[0003] Currently, commonly used head-mounted displays (HMDs) include a forehead support and a headset connected to the support. Certain functions require multiple adjustments to the HMD's relative position to the user's eyes to achieve optimal display quality. However, existing HMDs offer limited adjustment capabilities, limited to adjusting the eye distance or the angle between the HMD's center and the user's eye center, making them inconvenient to operate.

[0004] Chinese patent publication number CN 207516644 U discloses an adjustment structure for a head-mounted display. The disclosed structure can independently adjust the angle of a forehead bracket relative to a display device, or adjust the front-to-back position of the forehead bracket. However, it cannot simultaneously and conveniently adjust multiple degrees of freedom, such as the vertical position, front-to-back position, and tilt angle of the head-mounted display center relative to the center of the human eye.

[0005] Chinese patent publication number CN 207249253 U discloses a head-mounted display connector that can adapt to different users by adjusting the height and angle of the support rod. This solves the defect of the existing technology that the head-mounted display can only be fixed by a headband. However, it also cannot easily and quickly adjust multiple degrees of freedom such as the vertical position, front-to-back position, and tilt angle of the head display center relative to the human eye center. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a head mounted display capable of adjusting the relative display position with multiple degrees of freedom in view of the above-mentioned defects of the prior art.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A head-mounted display capable of adjusting a relative display position with multiple degrees of freedom is constructed, comprising a forehead rest assembly and a head-mounted display assembly, and also comprising a connecting mechanism connecting the head-mounted display assembly and the forehead rest assembly; the connecting mechanism comprises a first joint assembly and a second joint assembly, the first joint assembly being provided with a first rotation connection point, the second joint assembly being provided with a second rotation connection point, the first joint assembly and the second joint assembly being connected to form a third rotation connection point, and the first rotation connection point, the second rotation connection point and the third rotation connection point being respectively provided with a joint axis with controllable torque, so as to achieve multi-degree-of-freedom adjustment of the relative display position between the head-mounted display assembly and the forehead rest assembly.

[0009] As an improvement of the head-mounted display, the first joint assembly includes: a forehead rest connector for connecting to the forehead rest assembly and a first connecting plate connected to the second joint assembly, and the forehead rest connector and the first connecting plate are connected via a first joint axis with controllable torque.

[0010] As an improvement to the head-mounted display, the second joint assembly includes: a head-mounted display connector connected to the head-mounted display assembly and a second connecting plate connected to the first joint assembly, and the head-mounted display connector and the second connecting plate are connected via a second joint axis with controllable torque.

[0011] As an improvement to the head-mounted display, the forehead support connector includes a plate body, the forehead support assembly is provided with a connection groove for accommodating the plate body, and the plate body and the connection groove are fixed by a first fixing member to form a detachable connection.

[0012] As an improvement to the head-mounted display, the plate body portion protrudes along the side edge to form a convex portion, and the connecting groove wall portion is recessed along the groove bottom edge to form a card slot, and the convex portion can be inserted into the card slot to cooperate with the movement of the plate body.

[0013] As an improvement to the head-mounted display, the head-mounted display connector includes a connecting portion, the head-mounted display assembly is provided with a fixing hole for inserting the connecting portion, and the connecting portion and the fixing hole are fixed by a second fixing member to form a detachable connection.

[0014] As an improvement to the head-mounted display, the head-mounted display connector has a fixed channel, one end of which is connected to the outside, and the other end is used to connect to the head-mounted display component so that the coaxial line used to connect the head-mounted display component can pass through and be fixed.

[0015] As an improvement to the head-mounted display, the axes of the ports at both ends of the fixed channel are perpendicular to each other.

[0016] As an improvement to the head mounted display, a positioning component is provided between the connecting portion and the fixing hole, and the connecting portion can be centrally positioned when inserted into the fixing hole by means of the positioning component.

[0017] As an improvement to the head-mounted display, the positioning component includes a positioning shaft provided on the connecting portion, a positioning hole is opened on the inner wall of the fixing hole, and the connecting portion is inserted into the positioning hole through the positioning shaft for cooperative positioning.

[0018] The beneficial effect of the present invention is that the arrangement of the first joint assembly and the second joint assembly of the head-mounted display enables the head-mounted display assembly and the forehead rest assembly to be connected through a connection mechanism with three rotation connection points. The head-mounted display assembly can be rotated at any rotation connection point as a center point. Therefore, the head-mounted display assembly can be adjusted relative to the forehead rest assembly in multiple directions, including the up-down and front-back distances between the head-mounted display assembly and the forehead rest assembly. The angles between the head-mounted display assembly and the human eye and the forehead rest assembly can also be freely adjusted, thereby achieving the purpose of multi-degree-of-freedom adjustment of the relative display position between the head-mounted display assembly and the forehead rest assembly, thereby meeting the personalized needs of different users.

[0019] In addition, users can change the torque at the joint axis connection, that is, adjust the tightness of the connection, so that users can adjust the position and angle of the head-mounted display component, and fix the head-mounted display component with adjusted angle and position; thereby ensuring the stability and comfort of the head-mounted display when worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0021] Figure 1 This is one of the three-dimensional structural diagrams of the present utility model;

[0022] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 3 This is one of the partial three-dimensional structural diagrams of the utility model;

[0024] Figure 4 This is one of the exploded views of the partial structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the first connecting plate and the second connecting plate of the utility model;

[0026] Figure 6 This is the second exploded view of the partial structure of the utility model;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the torque regulator of the utility model;

[0028] Figure 8 This is the third exploded view of the partial structure of the utility model;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the hinge nut of the utility model;

[0030] Figure 10 This is the second schematic diagram of a partial three-dimensional structure of the utility model;

[0031] Figure 11 This is a schematic diagram of the three-dimensional structure of the forehead support assembly of the present invention;

[0032] Figure 12 It is an enlarged view of point A of the present utility model;

[0033] Figure 13 This is a schematic diagram of the three-dimensional structure of the forehead support connector of the present invention;

[0034] Figure 14 It is a structural diagram of the head display assembly of the utility model;

[0035] Figure 15 It is an enlarged view of point B of the present utility model;

[0036] Figure 16 It is a schematic diagram of the three-dimensional structure of the head display assembly of the utility model;

[0037] Figure 17 This is a schematic diagram of the three-dimensional structure of the head display connector of the present invention;

[0038] Figure 18 This is one of the state structure diagrams of the first joint assembly and the second joint assembly of the utility model;

[0039] Figure 19 This is the second schematic diagram of the state structure of the first joint component and the second joint component of the utility model;

[0040] Figure 20 This is the third schematic diagram of the state structure of the first joint component and the second joint component of the present invention.

[0041] In the figure: 1, forehead support assembly; 11, connecting slot; 12, card slot; 2, head display assembly; 21, fixing hole; 22, positioning hole; 3, first joint assembly; 31, forehead support connector; 311, plate; 312, protrusion; 313, first fixing member; 32, first connecting plate; 33, first joint axis; 4, second joint assembly; 41, head display connector; 411, connecting portion; 412, second fixing member; 413, fixing hole Road; 414, positioning axis; 415, guide bar; 416, inclined plane; 42, second connecting plate; 43, second joint axis; 501, third joint axis; 51, hinge nut; 511, directional protrusion; 512, limiting protrusion; 52, hinge screw; 521, snap-fit ​​groove; 53, torque adjuster; 531, snap point; 6, spring washer; 7, connecting hole; 701, positioning groove; 702, limiting groove; 8, glasses body. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 18 、 Figure 19 and Figure 20 As shown, a head-mounted display capable of adjusting the relative display position with multiple degrees of freedom includes a forehead rest assembly 1 and a head display assembly 2, and also includes a connecting mechanism connecting the head display assembly 2 and the forehead rest assembly 1; the connecting mechanism includes a first joint assembly 3 and a second joint assembly 4, the first joint assembly 3 is provided with a first rotation connection point, the second joint assembly 4 is provided with a second rotation connection point, the first joint assembly 3 and the second joint assembly 4 are connected to form a third rotation connection point, and the first rotation connection point, the second rotation connection point and the third rotation connection point are respectively provided with torque-controllable joint axes to achieve multi-degree-of-freedom adjustment of the relative display position between the head display assembly 2 and the forehead rest assembly 1.

[0044] Specifically, the user can adjust the torsion at the joint shaft to change the tightness of the connection at the first, second and third rotation connection points, so as to adjust the position and angle of the head-mounted display assembly 2 and fix the head-mounted display assembly 2 at the adjusted angle and position, thereby ensuring the stability and comfort of the head-mounted display when worn. The head-mounted display assembly 2 and the forehead support assembly 1 are connected through the connection mechanism with three rotation connection points, and the head-mounted display assembly 2 can rotate around any one of the rotation connection points as the center point, so that the head-mounted display assembly 2 can be adjusted in multiple directions relative to the forehead support assembly 1, including the up-down and front-back distance between the head-mounted display assembly 2 and the forehead support assembly 1, and the angle between the head-mounted display assembly 2 and the human eye and the forehead support assembly 1 can also be freely adjusted, achieving the purpose of multi-degree-of-freedom adjustment of the relative display position between the head-mounted display assembly 2 and the forehead support assembly 1, thereby meeting the individual needs of different users.

[0045] The head-mounted display further includes a display body 8, and the forehead support assembly 1 and the head-mounted display assembly 2 are connected to the display body 8.

[0046] In some embodiments of the present application, the first joint assembly 3 includes a forehead support connecting head 31 for connecting with the forehead support assembly 1 and a first connecting plate 32 connected with the second joint assembly 4, and the forehead support connecting head 31 and the first connecting plate 32 are connected through a torsion-controllable first joint shaft 33.

[0047] Specifically, the user can adjust the relative angle or position between the head-mounted display assembly 2 and the forehead support assembly 1 by rotating the position of the first connecting plate 32 relative to the forehead support connecting head 31. Since the first rotation connection point is farthest from the head-mounted display assembly 2 compared to the second and third rotation connection points, when the head-mounted display assembly 2 rotates around the first joint shaft 33 as the center point, the head-mounted display assembly 2 moves a larger amplitude, and can be rotated upward to an open state, so that the user can better observe the surrounding environment when pausing use without blocking the line of sight and without having to take off the head-mounted display. The head-mounted display assembly 2 can also be rotated downward to a position close to the human eye for the user to align for use. By adjusting the torsion of the first joint shaft 33, the user can fix the head-mounted display assembly 2 at the desired position and angle, preventing shaking or displacement caused by head movement during use.

[0048] In some embodiments of the present application, the second joint assembly 4 includes a head-mounted display connecting head 41 connected with the head-mounted display assembly 2 and a second connecting plate 42 connected with the first joint assembly 3, and the head-mounted display connecting head 41 and the second connecting plate 42 are connected through a torsion-controllable second joint shaft 43.

[0049] Specifically, by adjusting the torque of the second joint axis 43, the user can easily rotate the head-mounted display assembly 2 to adjust the position and angle of the head-mounted display assembly 2 relative to the user's head, helping the user find the optimal viewing angle and wearing comfort. Because the torque is controllable, the user can set the rotation resistance according to their personal preferences and needs. For users who prefer a wider range of head movement, a lower torque can be set; for users who require more stability, the torque can be increased.

[0050] Furthermore, the first joint assembly 3 and the second joint assembly 4 are connected via a torque-controllable third joint axis 501. The head-mounted display assembly 2 can rotate about the first joint axis 33 and the third joint axis 501 as the center points. When the head-mounted display assembly 2 rotates about the first joint axis 33 until it is close to the user's eye position and in use, the first joint axis 33 and the third joint axis 501 cooperate to achieve two degrees of freedom of adjustment: the vertical and front-back distances between the head-mounted display assembly 2 and the forehead support assembly 1. The front-back distance adjustment is used to adjust the eye contact distance between the head-mounted display assembly 2 and the user's eye, while the vertical distance adjustment is used to adjust the height of the head-mounted display assembly 2 until it is aligned with the user's eye position. When the head-mounted display assembly 2 is in use, the vertical and front-back distances can be adjusted within an 8mm adjustment range. Rotation of the head-mounted display assembly 2 about the second joint axis 43 is used to adjust the angle of the head-mounted display assembly 2, ensuring that the head-mounted display assembly 2 remains parallel to the user's eye position or maintains a preset angle as it moves up, down, or forward.

[0051] Therefore, the head-mounted display uses three torque-controllable joint axes to form three rotation connection points between the forehead support connector 31, the first connecting plate 32, the second connecting plate 42 and the head display connector 41, thereby realizing the multi-degree-of-freedom adjustment function of the head display component 2.

[0052] In some embodiments of the present application, the first joint shaft 33, the second joint shaft 43 and the third joint shaft 501 have the same structure and all include a hinge nut 51 and a hinge screw 52. The ends of the forehead support connector 31, the first connecting plate 32, the second connecting plate 42 and the head-mounted display connector 41 are all provided with connection holes 7 for the hinge nut 51 to pass through. The three rotating connection points between the forehead support connector 31, the first connecting plate 32, the second connecting plate 42 and the head-mounted display connector 41 are all provided with spring washers 6. The hinge screw 52 is threadedly matched with the hinge nut 51 to adjust the compression amount of the spring washer 6.

[0053] Specifically, the spring washer 6 is a butterfly spring washer 6, which is used to provide elasticity and buffering effects; first, the hinge nut 51 passes through the corresponding connecting hole 7 to form a preliminary connecting structure; then the hinge screw 52 is threadedly engaged with the hinge nut 51, and by rotating the hinge screw 52, ​​its position in the hinge nut 51 can be adjusted. As the hinge screw 52 rotates, the spring washer 6 is squeezed and the compression amount will change. By adjusting the compression amount of the spring washer 6, the tightness and elasticity of the rotating connection point can be changed, thereby achieving the purpose of adjustable torque.

[0054] The first connecting plate 32, the second connecting plate 42 are connected to the forehead support connector 31 and the head-mounted display connector 41 through the first joint axis 33, the second joint axis 43 and the third joint axis 501 to form a hinge mechanism, and the first connecting plate 32 and the second connecting plate 42 become two movable joint components, allowing the head-mounted display component 2 to move and fold within a certain range, thereby achieving the adjustability and flexibility of the head-mounted display; that is, the eye distance can be adjusted, and the angle between the center of the head-mounted display component 2 and the center of the human eye can also be adjusted.

[0055] Furthermore, three hinge nuts 51 are threaded through connection holes 7 at the three rotational connection points to form a rotatable connection. The hinge screws 52 are threadedly engaged with the hinge nuts 51, that is, the screws are screwed into the nuts, thereby fastening the forehead support connector 31, the first connection plate 32, the second connection plate 42, and the head display connector 41 together. By adding spring washers 6 at the three rotational connection points, the joint axis can be prevented from loosening due to long-term use or external forces to a certain extent, thereby enhancing the stability of the entire connection structure. In addition, the spring washers 6 provide a certain degree of elastic support at each rotational connection, helping to absorb and disperse the pressure generated by the user's head movement or external impact.

[0056] In some embodiments of the present application, Figure 6 and Figure 7 As shown, the hinge screw 52 further includes a torque adjuster 53 having a snap-in point 531. The hinge screw 52 is radially provided with a snap-in groove 521. The snap-in point 531 can be inserted into the snap-in groove 521 to cooperate with the hinge screw 52, ​​so that the hinge screw 52 can be rotated by twisting the torque adjuster 53. Specifically, when the torque of the hinge needs to be adjusted, the snap-in point 531 of the torque adjuster 53 is inserted into the snap-in groove 521 of the hinge screw 52. Subsequently, by twisting the torque adjuster 53, the hinge screw 52 is driven to rotate, thereby tightening or loosening the hinge nut 51, changing the compression amount of the spring washer 6, and thus achieving the purpose of adjusting the hinge torque. Precise torque adjustment helps ensure a tight fit between the forehead rest connector 31, the first connecting plate 32, the second connecting plate 42, and the head display connector 41, thereby improving the connection stability.

[0057] In some embodiments of the present application, the torque adjuster 53 is detachably connected to the hinge screw 52. Therefore, the torque adjuster 53 and the hinge screw 52 can be easily separated and reassembled in a specific manner, making it easy for users to replace or adjust the torque adjuster 53 as needed to adapt to different application scenarios or requirements.

[0058] In some embodiments of the present application, the torque adjuster 53 has a built-in magnet, and the torque adjuster 53 is magnetically coupled with the hinge screw 52 to form a snap connection. Specifically, the hinge screw 52 is made of metal, and the torque adjuster 53 has a built-in magnet. The magnet can generate a magnetic field to cooperate with the hinge screw 52. When the torque adjuster 53 is close to the hinge screw 52, ​​the magnetic field generated by the magnet will interact with the metal hinge screw 52. Due to the effect of the magnetic field, a magnetic attraction force will be generated between the torque adjuster 53 and the hinge screw 52, ​​so that the two can fit tightly together to form a snap connection; the torque adjuster 53 and the hinge screw 52 can be quickly and easily connected and fixed. In addition, the connection structure between the torque adjuster 53 and the hinge screw 52 is simplified, the number and complexity of parts are reduced, and the cost is reduced.

[0059] In some embodiments of the present application, the torque adjuster 53 has two card points 531 at the end, and the number of the card slots 521 of the hinge screw 52 is the same as the card points 531. Specifically, by matching the two card points 531 with the card slots 521, multi-point fixation between the torque adjuster 53 and the hinge screw 52 is achieved. Compared with single-point fixation, the multi-point fixation method has higher stability and load-bearing capacity; it improves the connection stability between the torque adjuster 53 and the hinge screw 52. Even if one of the card points 531 is subjected to external impact or wear, the other card points 531 can still maintain the connection to prevent loosening or falling off; when the torque adjuster 53 is twisted, the force can be applied to the hinge screw 52 through the two card points 531, which can more effectively transmit the rotational force and reduce the loss of force during the transmission process, making it easier to tighten or loosen the hinge screw 52 and more labor-saving.

[0060] In some other embodiments, the torque adjuster 53 and the hinge screw 52 may be detachably connected by bolts.

[0061] In some embodiments of the present application, Figure 8 、 Figure 9 and Figure 10As shown, the hinge nut 51 is provided with an oriented protrusion 511. The two connection holes 7 of the first connecting plate 32 and the connection hole 7 on the side of the second connecting plate 42 near the head-mounted display connector 41 are each provided with a positioning groove 701 for the corresponding oriented protrusion 511 to be inserted into, thereby restricting the rotation of the hinge nut 51. Specifically, the connection holes 7 on one side of the first connecting plate 32 and the second connecting plate 42 are provided with a positioning groove 701 that matches the oriented protrusion 511. When the hinge nut 51 is installed on the connecting plate, the oriented protrusion 511 is inserted into the corresponding positioning groove 701. Due to the tight fit between the oriented protrusion 511 and the positioning groove 701, when the hinge screw 52 is tightened, the hinge nut 51 is restrained by the positioning groove 701 after being subjected to rotational force, preventing it from rotating freely. This ensures the stability of the hinge nut 51 after installation, eliminating the need to tighten the hinge screw 52 and manually secure the hinge nut 51.

[0062] In some embodiments of the present application, the hinge nuts 51 at the first and third rotational connection points are each provided with a limiting protrusion 512. Limiting slots 702 are defined in the connection hole 7 of the forehead support connector 31 and the connection hole 7 of the second connecting plate 42 proximate to the first connecting plate 32. The limiting protrusions 512 pass through the first connecting plate 32 and are inserted into the corresponding limiting slots 702 to limit the rotational angle range of the first and second connecting plates 32, 42. Specifically, two of the three hinge nuts 51 have limiting protrusions 512 that mate with the limiting slots 702 defined in the connection hole 7 of the forehead support connector 31 and the connection hole 7 of the second connecting plate 42 proximate to the first connecting plate 32. When these hinge nuts 51 are installed and tightened into place, the limiting protrusions 512 pass through the first connecting plate 32 and are inserted into the corresponding limiting slots 702. Because the limiting protrusion 512 fits tightly with the limiting slot 702, when the first connecting plate 32 and the second connecting plate 42 attempt to rotate relative to each other at the first and third rotational connection points, respectively, the limiting protrusion 512 slides within the limiting slot 702. When the rotation angle reaches the design limit of the limiting slot 702, the limiting protrusion 512 abuts against the end of the limiting slot 702, preventing further rotation of the first and second connecting plates 32 and 42. This effectively controls the rotation angle range of the first and second connecting plates 32 and 42 through physical constraints. By limiting the rotation angle range of the connecting plates, structural damage or loosening caused by excessive rotation can be prevented.

[0063] Furthermore, the rotation angle range of the first connecting plate 32 and the second connecting plate 42 can be set to 70°-90°.

[0064] The rotation angle range of the first connecting plate 32 and the second connecting plate 42 can be specifically set to 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89° or 90°.

[0065] It should be noted that Figure 11 This is a diagram showing the head-mounted display assembly 2 in use, close to the human eye. This is State 1. Based on State 1, the head-mounted display assembly 2 rotates with the first joint axis 33 and the third joint axis 501 as the center point, and can be moved and adjusted in four directions: up, down, front, and back. The up and down adjustment range and the front and back adjustment range are both 8mm. The head-mounted display assembly 2 is adjusted with the second joint axis 43 as the rotation point so that the head-mounted display assembly 2 is parallel to the human eye position.

[0066] Figure 12 This is a state diagram of the head display component 2 after it rotates outward to the extreme angle with the first joint axis 33 as the center point, and is in a preliminary open state away from the human eye position. This is state 2. Figure 13 This is a diagram of the head display assembly 2 in the state 2, after being rotated outward to the extreme angle with the third joint axis 501 as the center point, and then being in the fully open state away from the human eye position. This is the state 3.

[0067] In some embodiments of the present application, Figure 11 、 Figure 12 and Figure 13 As shown, the forehead support connector 31 includes a plate 311. The forehead support assembly 1 has a connection groove 11 for accommodating the plate 311. The plate 311 and the connection groove 11 are fixed by a first fixing member 313 to form a detachable connection. Specifically, when it is necessary to connect the forehead support connector 31 to the forehead support assembly 1, the plate 311 is first aligned with the connection groove 11 and inserted. Then, the plate 311 is fixed in the connection groove 11 using the first fixing member 313, so that a stable connection is formed between the forehead support connector 31 and the forehead support assembly 1, ensuring the stability of the head-mounted display during use. The detachable connection design allows users or maintenance personnel to easily install or remove the forehead support connector 31.

[0068] In some embodiments of the present application, a portion of the plate 311 protrudes along the side edge to form a protrusion 312, and a portion of the wall of the connecting groove 11 is recessed along the bottom edge of the groove to form a snap-in groove 12. The protrusion 312 can be inserted into the snap-in groove 12 as the plate 311 moves. Specifically, when it is necessary to connect the forehead support connector 31 to the forehead support assembly 1, the plate 311 is first aligned with the connecting groove 11, ensuring that the protrusion 312 is aligned with the snap-in groove 12; then, the plate 311 is pushed into the connecting groove 11. The protrusion 312 will gradually insert into the snap-in groove 12 as the plate 311 moves, forming a snap-in structure. The first fixing member 313 further secures the plate 311 to the forehead support assembly 1. The cooperation between the protrusion 312 and the slot 12 can ensure that the forehead support connector 31 and the forehead support assembly 1 are accurately positioned when connected, avoiding dislocation or offset during the connection process; at the same time, since the shape and size of the protrusion 312 and the slot 12 match each other, a tight fitting relationship is formed between the two, thereby improving the load-bearing capacity and tensile strength of the connection.

[0069] In some embodiments of the present application, Figure 14 、 Figure 15 、 Figure 16 and Figure 17 As shown, the head-mounted display connector 41 includes a connecting portion 411, and the head-mounted display assembly 2 is provided with a fixing hole 21 for the connecting portion 411 to be inserted. The connecting portion 411 and the fixing hole 21 are fixed by a second fixing member 412 to form a detachable connection. Specifically, when it is necessary to connect the head-mounted display connector 41 to the head-mounted display assembly 2, the connecting portion 411 is first aligned with the fixing hole 21 and inserted. Then, the connecting portion 411 is fixed in the fixing hole 21 using the second fixing member 412 to achieve a fixed connection between the head-mounted display connector 41 and the head-mounted display assembly 2; this ensures the stability of the head-mounted display during use and helps reduce the problem of image jitter or unclear display caused by loose connections. The design of the detachable connection allows users or maintenance personnel to easily install or remove the head-mounted display assembly 2.

[0070] In some embodiments of the present application, the head-mounted display connector 41 has a fixed channel 413. One end of the fixed channel 413 is connected to the outside, and the other end is used to connect to the head-mounted display assembly 2, allowing the coaxial line used to connect to the head-mounted display assembly 2 to pass through and be fixed. Specifically, the coaxial line is a wire used to transmit high-frequency signals; one end of the fixed channel 413 is connected to the outside, allowing the coaxial line to be directly inserted into the channel from the outside; the other end of the fixed channel 413 is connected to the head-mounted display assembly 2, ensuring that the coaxial line can be smoothly connected to the head-mounted display assembly 2. At the same time, the coaxial line is located within the fixed channel 413, which has a certain fixing effect on the coaxial line, preventing it from easily loosening or falling off during use, and ensuring the stability of the signal during transmission.

[0071] In some embodiments of the present application, the axes of the ports at both ends of the fixed channel 413 are perpendicular to each other. Specifically, the axes of the ports at both ends of the fixed channel 413 are perpendicular to each other, which means that the fixed channel 413 forms a right-angle turn inside the head-mounted connector 41, and the coaxial line will be properly fixed during the process of passing through the channel to prevent loosening or falling off during use. At the same time, by designing the fixed channel 413 with the axes of the ports at both ends perpendicular to each other, the connection and fixation of the coaxial line can be achieved in a limited space, optimizing the overall structure of the head-mounted connector 41 and the head-mounted assembly 2, making it more compact and efficient; also reducing the wear and damage of the coaxial line during use.

[0072] In some embodiments of the present application, a positioning component is provided between the connecting part 411 and the fixed hole 21, which can center the connecting part 411 when it is inserted into the fixed hole 21. Specifically, when the connecting part 411 starts to be inserted into the fixed hole 21, the positioning component will play a guiding role, guiding the connecting part 411 to move along the correct path, ensuring that the connecting part 411 can maintain a centered position during the insertion process, preventing skewing or misalignment, achieving the purpose of locking or fixing the connecting part 411 once it is completely inserted into the fixed hole 21, ensuring that it remains in the centered position; significantly improving the positioning accuracy between the connecting part 411 and the fixed hole 21.

[0073] In some embodiments of the present application, the positioning component includes a positioning shaft 414 provided on the connecting part 411, and a positioning hole 22 is opened on the inner wall of the fixed hole 21, and the connecting part 411 is positioned by inserting the positioning shaft 414 into the positioning hole 22. Specifically, the positioning hole 22 is a hole matched with the positioning shaft 414, used to receive the positioning shaft 414 and achieve accurate positioning; when the connecting part 411 needs to be inserted into the fixed hole 21, the positioning shaft 414 is first aligned with the positioning hole 22, then the connecting part 411 is pushed into the fixed hole 21, and at the same time the positioning shaft 414 is inserted into the positioning hole 22, through the close cooperation of the positioning shaft 414 and the positioning hole 22, the connecting part 411 is accurately positioned in the fixed hole 21, so as to facilitate the fixed connection between the connecting part 411 and the head-mounted assembly 2 by the first fixing part 313.

[0074] Furthermore, the positioning component also includes guide bars 415 arranged on the four sides of the inner wall of the fixing hole 21. The outer ends of the guide bars 415 are inclined surfaces 416 to guide and center the connecting portion 411 inserted into the fixing hole 21. After the connecting portion 411 is inserted into the fixing hole 21, it first contacts the inclined surfaces 416 of each guide bar 415. Through the guidance of the inclined surfaces 416, the connecting portion 411 is gradually centered in the fixing hole 21, and the positioning shaft 414 and the positioning hole 22 are aligned with each other. Ensure that the connecting portion 411 can maintain the correct position and angle when inserted into the fixing hole 21, reducing deviations and errors. Once the positioning shaft 414 is inserted into the positioning hole 22, they will lock with each other to prevent the connecting portion 411 from loosening or falling off under force or vibration conditions.

[0075] Furthermore, the first fixing member 313 and the second fixing member 412 are both fixing bolts, and the plate body 311 and the connecting portion 411 are both provided with threaded holes that cooperate with the fixing bolts. The fixing bolts cooperate with the threaded holes to achieve a detachable connection.

[0076] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A head-mounted display capable of adjusting relative display positions with multiple degrees of freedom, comprising a forehead support assembly and a head-mounted display assembly, characterized in that: It also includes a connecting mechanism connecting the head-mounted display assembly and the forehead rest assembly; the connecting mechanism includes a first joint assembly and a second joint assembly, the first joint assembly is provided with a first rotation connection point, the second joint assembly is provided with a second rotation connection point, the first joint assembly and the second joint assembly are connected to form a third rotation connection point, and the first rotation connection point, the second rotation connection point and the third rotation connection point are respectively provided with torque-controllable joint axes to achieve multi-degree-of-freedom adjustment of the relative display position between the head-mounted display assembly and the forehead rest assembly.

2. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 1, characterized in that: The first joint assembly includes: a forehead support connector for connecting to the forehead support assembly and a first connecting plate connected to the second joint assembly. The forehead support connector and the first connecting plate are connected via a first joint shaft with controllable torque.

3. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 1, characterized in that: The second joint assembly includes: a head-mounted display connector connected to the head-mounted display assembly and a second connecting plate connected to the first joint assembly, and the head-mounted display connector and the second connecting plate are connected via a second joint axis with controllable torque.

4. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 2, characterized in that: The forehead support connector includes a plate body, and the forehead support assembly is provided with a connecting groove for accommodating the plate body. The plate body and the connecting groove are fixed by a first fixing member to form a detachable connection.

5. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 4, characterized in that: The plate body portion protrudes along the side edge to form a convex portion, and the connecting groove wall portion is recessed along the groove bottom edge to form a clamping groove. The convex portion can be inserted into the clamping groove to cooperate with the movement of the plate body.

6. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 3, characterized in that: The head display connector includes a connecting portion, and the head display component is provided with a fixing hole for inserting the connecting portion. The connecting portion and the fixing hole are fixed by a second fixing member to form a detachable connection.

7. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 6, characterized in that: The head display connector has a fixed channel, one end of which is connected to the outside, and the other end is used to communicate with the head display component so that the coaxial line used to connect the head display component can pass through and be fixed.

8. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 7, characterized in that: The axes of the ports at both ends of the fixed channel are perpendicular to each other.

9. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 6, characterized in that: A positioning component is provided between the connecting portion and the fixing hole, and the connecting portion can be centrally positioned when inserted into the fixing hole through the positioning component.

10. The head-mounted display capable of adjusting relative display positions with multiple degrees of freedom according to claim 9, characterized in that: The positioning component includes a positioning shaft provided on the connecting portion, a positioning hole is opened on the inner wall of the fixing hole, and the connecting portion is inserted into the positioning hole through the positioning shaft for matching positioning.

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