CN116400509B - Head-mounted display device - Google Patents
Head-mounted display device Download PDFInfo
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- CN116400509B CN116400509B CN202310668433.3A CN202310668433A CN116400509B CN 116400509 B CN116400509 B CN 116400509B CN 202310668433 A CN202310668433 A CN 202310668433A CN 116400509 B CN116400509 B CN 116400509B
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- lens barrel
- display device
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- 230000000712 assembly Effects 0.000 claims abstract description 18
- 238000000429 assembly Methods 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 6
- 210000001747 pupil Anatomy 0.000 abstract description 10
- 238000012545 processing Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/12—Adjusting pupillary distance of binocular pairs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The application provides a head-mounted display device, which comprises a display shell, a base plate, two groups of lens barrel components, a gear, two racks and a locking component, wherein a communicated assembly space and two assembly holes are arranged in the display shell; the base plate is arranged in the assembly space and is connected to the inner wall of the display shell; the lens barrel assembly is movably arranged in the assembly hole; the gear is rotatably connected to the base plate and is positioned at the center of the two lens barrel assemblies; the two racks are respectively connected to the two lens cone assemblies and meshed to opposite sides of the gear, each rack comprises at least two gear shifting gear teeth, and one or more gear shifting gear teeth correspond to one gear; the locking assembly is capable of abutting to the gear; when the lens barrel assembly is pushed and pulled, the gear is meshed with the adjacent gear shifting gear teeth from one gear shifting gear tooth, so that the gear of the lens barrel assembly is adjusted; when the lens barrel assembly is not pushed and pulled, the locking assembly is abutted to the gear, so that the gear is locked, and the technical problem that the user wearing experience is reduced in the existing pupil distance adjusting mode is solved.
Description
Technical Field
The application relates to a head-mounted display device.
Background
The head-mounted display device (namely the VR head display and the VR glasses) is projected to the retina of human eyes through the display screen and the visual system, and the essence of the head-mounted display device is that the head-mounted display device takes a user visual angle as a main body, can observe objects in a three-dimensional space in real time and without limitation, and provides immersion experience for users. The virtual display technology is widely applied to a plurality of fields such as entertainment, military training, medical training, three-dimensional virtual display of products and the like.
Because of the difference of the interpupillary distances of different users, the head-mounted display device is required to have the function of interpupillary distance compatibility for the clients adapting to the different interpupillary distances.
In the prior art, two lens cone assemblies are respectively connected with a rack, gears meshed with the two racks are arranged in a display shell, and when the lens cone assemblies are synchronously pushed and pulled, the two racks can synchronously rotate relative to the gears, so that the distance between the two lens cone assemblies is adjusted, and the head-mounted display device can adapt to the interpupillary distance of a user.
For example, the VR mechanism with the authority bulletin number CN 213659097U and capable of automatically adjusting the pupil distance discloses that the driving motor is meshed with the first rack through the output gear, and meanwhile, the second rack and the third rack are respectively meshed with the lens barrel linkage gear assembled on the lens barrel fixing bracket, so that the driving motor can drive the first optical module to move along the polished rod through the output gear and the first rack, and the first optical module can drive the lens barrel linkage gear to rotate through the second rack while moving, and the lens barrel linkage gear can drive the second optical module to move along the polished rod at the same speed as the first optical module, opposite or opposite directions through the third rack of the second optical module, thereby automatically adjusting the pupil distance of the VR headset.
The interpupillary distance of human eyes has self-adaptation function to the distance of two lens cone assemblies in a certain range, therefore when utilizing the third rack to carry out fine adjustment, the user need carry out repeated adjustment lens cone assemblies many times based on visual experience in the in-process of adjustment to the wearing experience of user has been reduced.
Disclosure of Invention
The application provides a head-mounted display device, which aims to solve the technical problem that the wearing experience of a user is reduced in the existing pupil distance adjusting mode.
The application provides a head-mounted display device, which comprises a display shell, a base plate, two groups of lens barrel components, a gear, two racks and a locking component, wherein an assembly space and two assembly holes are formed in the display shell, and the assembly holes are communicated to the assembly space; the base plate is arranged in the assembly space and is connected to the inner wall of the display shell; the two groups of lens barrel components can be horizontally arranged in the assembly holes; the gear is rotatably connected to the base plate through a mounting shaft and is positioned between the two lens barrel assemblies; each rack is connected to one lens barrel assembly, and two racks are respectively meshed to opposite sides of the gear; each rack comprises at least two gear shifting gear teeth, and at least one gear shifting gear tooth corresponds to one gear of the lens cone assembly; the locking component is arranged in the installation space and can be abutted to one end face of the gear; the locking component comprises a locking piece and an elastic piece, a second through hole is formed in the middle of the locking piece, and the locking piece is sleeved outside the mounting shaft and can slide along the central axis direction of the mounting shaft; the elastic piece is arranged between the locking piece and the base plate, one end of the elastic piece is abutted to the locking piece, and the other end of the elastic piece is abutted to the base plate; when the lens barrel assembly is translated, the gear is driven by the rack to rotate, so that the gear of the lens barrel assembly is switched; when the barrel assembly is not translated, the locking assembly abuts the gear such that the gear is locked; the end face of the gear, which faces one side of the locking piece, is provided with more than two first sector blocks, the first sector blocks are uniformly distributed along the circumferential direction of the gear, and a first sector groove is formed between two adjacent first sector blocks; the end face of the locking piece, facing one side of the gear, is provided with more than two second fan-shaped blocks which are uniformly distributed, and a second fan-shaped groove is formed between two adjacent second fan-shaped blocks; when the locking piece is propped against the gear by the elastic piece, each first sector block is blocked into one second sector groove, and each second sector block is blocked into one first sector groove; when the lens barrel assembly is translated, the gear is rotated and at least one gear shift is realized; in each gear shifting process, one first sector block slides into the adjacent second sector groove from one second sector groove; one of the second segment slides from one of the first segment grooves to the adjacent other of the first segment grooves.
Optionally, the substrate includes a substrate body and a base, and the base protrudes from the middle of the substrate body and is disposed opposite to the gear; the mounting shaft penetrates through a first through hole in the middle of the gear to be connected to the base, and the gear can rotate on the surface of the mounting shaft.
Optionally, the top and the bottom of the locking piece are provided with notches or third through holes; the base plate comprises two guide posts which are vertically connected to the surface of the base plate facing the side of the gear; the two guide posts are respectively positioned above and below the mounting shaft; the tail end of each guide post is respectively inserted into one notch or one third through hole correspondingly.
Optionally, the side wall gradient of the first fan-shaped groove and the side wall gradient of the second fan-shaped groove are reduced, and the edges of the first fan-shaped groove and the edges of the second fan-shaped groove are chamfered or rounded; the side wall gradient of the first sector block and the side wall gradient of the second sector block are both reduced, and the edges of the first sector block and the edges of the second sector block are both chamfered or rounded.
Optionally, the arc length of the bottom surface of the first fan-shaped groove is equal to the tooth pitch of the gear shifting gear teeth, and the arc length of the first fan-shaped block is equal to the tooth thickness of the gear shifting gear teeth.
Optionally, each lens cone assembly is provided with at least three protruding arms, and the protruding arms are arranged in a triangle shape; the base plate is correspondingly provided with at least three first limit grooves, and one protruding arm is embedded into one first limit groove; the length of the first limit groove is greater than or equal to the stroke of the rack.
Optionally, a gap is reserved between the lens barrel assembly and the hole wall of the assembly hole.
Optionally, the head-mounted display device further comprises a stop block and a limit post, wherein the stop block is connected to the lens barrel assembly; the limit column penetrates through the substrate; the base plate is provided with a second limit groove, and the length of the second limit groove is longer than or equal to the stroke of the rack; the stop block is embedded into the second limit groove to move, and the limit column is inserted into the substrate along the movement direction of the rack and penetrates through the second limit groove and the stop block.
The application provides a head-mounted display device, which utilizes gear shifting gear teeth meshed to a gear to adjust a gear corresponding to a lens barrel assembly, and simultaneously utilizes clamping force between a locking assembly and the gear to lock the adjusted lens barrel assembly relative to a display shell. The number of gear shifting gear teeth and the width are used for limiting the gear of the lens barrel assembly, and the gear shifting gear teeth with smaller number and wider width are used for reducing the gear number of the lens barrel assembly, so that the self-adaptive function of the interpupillary distance of a user is utilized for quickly and conveniently adjusting the gear to the gear matched with the interpupillary distance of the user.
Meanwhile, the pupil distance difference range of different users is limited, and the user can obviously feel the change of the display image after each gear adjustment by the simplified gear setting, so that the gear matched with the user can be judged more accurately.
The assembly space of the display shell is limited, and meanwhile, the interpupillary distance range of human eyes is about 55 mm-70 mm, so that the movement range of the racks is limited, the strength of the racks can be improved through gear shifting gear teeth with fewer quantity and wider width, and the processing difficulty and the processing cost of the racks are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a head-mounted display device provided by the present application;
FIG. 2 is an exploded schematic view of a head mounted display device provided by the present application;
FIG. 3 is a schematic diagram of the meshing of a gear and a rack in a head mounted display device according to the present application;
fig. 4 is a schematic structural diagram of a substrate in a head-mounted display device according to the present application;
FIG. 5 is an enlarged schematic view of portion A of FIG. 4;
FIG. 6 is a schematic diagram showing the cooperation of gears and locking members in a head-mounted display device according to the present application;
fig. 7 is a schematic structural view of a locking member in a head-mounted display device according to the present application;
fig. 8 is a schematic diagram illustrating the cooperation between a substrate and a limiting post in the head-mounted display device according to the present application.
Reference numerals illustrate:
100. a display housing; 110. a display housing; 120. displaying the inner shell; 130. a fitting hole; 200. a substrate; 210. a first limit groove; 220. the second limit groove; 230. a limit column; 310. a base; 320. fixing the column; 330. a guide post; 331. a first column; 332. a second column; 400. a lens barrel assembly; 410. a rack; 411. gear shifting gear teeth; 420. a projecting arm; 430. a stop block; 500. a gear; 510. a first fan-shaped groove; 520. a first segment; 600. a mounting shaft; 710. a locking member; 711. a second segment; 712. a second fan-shaped groove; 713. a notch; 720. an elastic member.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper", "lower", "left" and "right" are generally used to refer to the directions of the upper, lower, left and right sides of the device in actual use or operation, and are specifically shown in the drawings.
The present application provides a head-mounted display device, which will be described in detail below. It should be noted that the following description order of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
Referring to fig. 1 and 2, the present application provides a head-mounted display device, which can close the vision and hearing of a wearer to the outside, and guide the user to generate a feeling of being in a virtual environment. The head-mounted display device comprises a display shell 100, a base plate 200 and two lens barrel assemblies 400, wherein the base plate 200 and the two lens barrel assemblies 400 are arranged in the display device, the lens barrel assemblies 400 can send optical signals to eyes, so that left and right eye screens respectively display left and right eye images, and eyes can generate stereoscopic impression in the brain after acquiring information with difference.
Referring to fig. 1 and 2, the display housing 100 includes a display outer housing 110 and a display inner housing 120 that are detachably connected, and the display outer housing 110 and the display inner housing 120 are spliced, so that the processing and the preparation of the display housing 100 are facilitated, and meanwhile, the assembly of components such as the substrate 200 and the lens barrel assembly 400 is also facilitated.
Referring to fig. 1 and 2, after the display outer shell 110 is spliced with the display inner shell 120, an assembly space is formed inside the display shell 100, two assembly holes 130 are formed in the display inner shell 120 corresponding to the eyes of the user, and the assembly holes 130 are communicated to the assembly space. The base plate 200 is disposed in the assembly space and is connected to the inner wall of the display inner case 120 by fastening screws, so that the base plate 200 is relatively fixed to the display case 100.
Referring to fig. 1 and 2, the two lens barrel assemblies 400 are respectively disposed in the two assembly holes 130, one end of the lens barrel assembly 400 is disposed in the assembly space, and the other end of the lens barrel assembly 400 passes through the assembly holes 130 to be out of the inner housing 120. Since the interpupillary distances of different users are different, the lens barrel assembly 400 is movably disposed in the display housing 100 for adapting to a plurality of different users. In order to avoid interference between the lens barrel assembly 400 and the display housing 100, a gap is left between the sidewall of the lens barrel assembly 400 and the wall of the assembly hole 130, and the size of the gap is mainly designed based on the adjustment range of the lens barrel assembly 400, so the embodiment is not specifically limited.
Referring to fig. 2 and 3, the head-mounted display apparatus further includes a locking assembly, a gear 500, and two adapted racks 410, wherein the gear 500 is rotatably connected to the base 200, and each rack 410 is connected to a lens barrel assembly 400. The gear 500 is disposed at the center of the two lens barrel assemblies 400, and the two racks 410 are respectively engaged to the upper and lower sides of the gear 500, so that the two lens barrel assemblies 400 can be synchronously moved toward or away from each other.
Referring to fig. 2, 4 and 5, the substrate 200 includes a substrate body and a base 310, wherein the base 310 protrudes from a surface of the substrate body facing the lens barrel assembly 400, and is located in a middle of the substrate body. The gear 500 is rotatably coupled to the base 310 by a mounting shaft 600, an end of the mounting shaft 600 is fixedly coupled to the base 310, and the mounting shaft 600 passes through a first through hole in the middle of the gear 500 and is inserted into the first through hole of the gear 500 by a rotation bearing so that the gear 500 can rotate with respect to the base 200.
The base 310 is utilized to fix the mounting shaft 600, so that the connection area of the mounting shaft 600 and the substrate 200 can be increased, the substrate 200 can be a plate-shaped structure with smaller thickness, and the lightweight design of the head-mounted display equipment is realized; meanwhile, the base 310 can improve the stability of the mounting shaft 600 in use and ensure the meshing precision of the gear 500 and the rack 410.
Referring to fig. 2 and 3, each rack 410 includes at least two gear teeth 411, and the gear teeth 411 are engaged with the gear 500 such that the rack 410 and the lens barrel assembly 400 can move with respect to the base plate 200. One or more gear shifting teeth 411 are defined to correspond to one gear of the lens barrel assembly 400, the travel of the lens barrel assembly 400 is divided into a plurality of different gears according to the pupil distance range of the user, and when the lens barrel assembly 400 is located at different positions in the assembly hole 130, the gear corresponding to the lens barrel assembly 400 is different. The user can adjust different gears according to visual experience so that the head-mounted display device is matched with the interpupillary distance of the user.
In this embodiment, one gear shift gear 411 corresponds to one gear shift gear, each rack 410 includes 2-6 gear shift gear teeth 411, and the lens barrel assembly 400 correspondingly has 2-6 gear shift gears, so that the head-mounted display device can be adapted to a plurality of different users.
The position where the gear 500 is fully engaged with the gear teeth 411 is defined as a gear mark, so that when the gear teeth 411 are located at the gear mark, the lens barrel assembly 400 is adjusted to a gear corresponding to the gear teeth 411.
Referring to fig. 3, since the pupil distance of the human eye has a certain self-adaptive function for a distance of 5 mm to 8 mm, the number of gears of the lens barrel assembly 400 can be reduced by using the gear shifting gear teeth 411 with a larger width, so that a user can quickly and conveniently determine the gears adapted to the user.
The tooth width of shift tooth 411 can be determined based on the range of the eye pupil distance and the number of gears to be designed. The gear adjusting gear teeth 411 are utilized to realize the adjustment of the gear of the lens barrel assembly 400, so that the same adjustment stroke of the gear can be ensured, and the accuracy of gear adjustment of the head-mounted display equipment is improved. Meanwhile, the gear shifting function can be realized during processing and preparing the rack 410 without additionally adding a structure for gear shifting, so that the structure of the head-mounted display device can be simplified, and the processing and the assembly are convenient.
Referring to fig. 2, the locking assembly is disposed inside the installation space and can abut against an end surface of the gear 500, so that the gear 500 can rotate only when the pushing and pulling force applied by the rack 410 to the gear 500 is greater than the abutting force applied by the locking assembly to the gear 500, so as to switch the gear of the lens barrel assembly 400.
Referring to fig. 2 and 5, the locking assembly includes a locking member 710 and an elastic member 720, and a second through hole is formed in the middle of the locking member 710, so that the locking member 710 can be sleeved outside the mounting shaft 600 and can move in the axial direction of the mounting shaft 600. Meanwhile, the elastic member 720 is sleeved outside the mounting shaft 600 and disposed between the locking member 710 and the substrate 200; one end of the elastic member 720 is abutted to the locking member 710, and the other end is abutted to the base plate 200, and the elastic member 720 is preferably a coil spring in this embodiment.
Referring to fig. 2, 6 and 7, the end face of the gear 500 facing the locking member 710 is provided with more than two first segments 520, the first segments 520 are uniformly distributed along the circumferential direction of the gear 500, and a first segment groove 510 is formed between two adjacent first segments 520. The first segment 520 and the first segment 510 are each a segment structure extending from the center of the gear 500 to the edges thereof.
The end face of the locking piece 710 facing the gear 500 side is provided with more than two second fan-shaped blocks 711 which are uniformly distributed, and a second fan-shaped groove 712 is formed between two adjacent second fan-shaped blocks 711; the second segment 711 and the second segment groove 712 are each a segment structure extending from the center of the locking member 710 to the edges thereof.
When the locking member 710 is pushed against the end face of the gear 500 by the elastic member 720, each first segment 520 is locked into a second segment 712, and each second segment 711 is locked into a first segment 510, so that the locking member 710 and the gear 500 are locked relatively.
When the lens barrel assembly 400 is translated, the two racks 410 synchronously drive the gears 500 to rotate and achieve at least one gear shift. During each gear shift, a first segment 520 slides from one second segment 712 into another adjacent second segment 712; a second segment 711 slides from one first segment 510 into an adjacent other first segment 510.
Referring to fig. 2, 6 and 7, when the lens barrel assembly 400 is shifted, the thrust force applied by the gear 500 can be uniformly distributed on the locking member 710, so that the locking member 710 moves smoothly along the axial direction of the gear 500. Meanwhile, because the stress of the gear 500, the locking piece 710 and the elastic piece 720 is relatively uniform, the precision of the elastic piece 720 when driving the locking piece 710 to reset can be improved, and when each gear shifting gear 500 and the gear 500 are meshed to the gear shifting mark, the second sector 711 of the locking piece 710 can just move into the corresponding first sector groove 510, so that the gear shifting precision of the head-mounted device is ensured.
Referring to fig. 6 and 7, in an initial state, the gear 500 is engaged with a gear shifting tooth 411 (refer to fig. 3), the locking member 710 is abutted to an end surface of the gear 500, meanwhile, a first segment 520 is snapped into a corresponding second segment 712, and a second segment 711 is snapped into a corresponding first segment 510, so that a clamping force is provided between the locking member 710 and the gear 500, which prevents the gear 500 from rotating due to external force during activities with high intensity such as games and sports, so as to ensure stable performance state of the head-mounted display device in use and improve wearing experience of users.
When a user needs to adjust the gear of the lens barrel assembly 400 (refer to fig. 3) according to the pupil distance of the user, the user pushes (or pulls) the lens barrel assembly 400, so that the rack 410 is applied with a pushing force (or pulling force) by the lens barrel assembly 400, the gear 500 bears the pushing force (or pulling force) applied by the gear teeth 411 by utilizing the engagement of the gear teeth 411 of the rack 410 and the gear 500, when the pushing force (or pulling force) is greater than the abutting force applied by the locking piece 710 to the gear 500, the gear 500 rotates, and other gear teeth 411 adjacent to the gear teeth 411 are engaged to the gear 500, and as different gear teeth 411 correspond to different gears, the user can select the matched gear according to wearing experience.
Since the locking member 710 can only move along the axial direction of the gear 500, it cannot rotate along with the rotation of the gear 500, so that during the rotation of the gear 500, the first segment 520 is rotated out of the second segment 712, and the second segment 711 is simultaneously rotated out of the first segment 510, at this time, the gear 500 applies a pushing force to the locking member 710, so that the locking member 710 moves toward the substrate 200 (see fig. 3), and compresses the elastic member 720 (see fig. 2) disposed between the locking member 710 and the substrate 200; when the user adjusts to a proper gear, the gear teeth 411 corresponding to the gear are engaged with the gear 500, and at this time, the second segment 711 of the locking member 710 moves to a position corresponding to the first segment 510, the compressed elastic member 720 may apply a pushing force to the locking member 710, so that the second segment 711 is embedded inside the first segment 510, and the first segment 520 is embedded inside the second segment 712, so that the locking member 710 and the gear 500 are locked relatively. Because the two racks 410 are meshed with the gear 500, the adjusted relative positions of the two lens barrel assemblies 400 are locked, and the head-mounted display device is ensured to always match the interpupillary distance of a user in the wearing process.
The gear corresponding to the lens barrel assembly 400 is adjusted by the gear teeth 411 engaged to the gear 500, and the adjusted lens barrel assembly 400 is locked with respect to the display housing 100 by the clamping force between the locking member 710 and the gear 500. The number and the width of the gear shifting gear teeth 411 are used for limiting the gear of the lens barrel assembly 400, and the gear shifting gear teeth 411 with a smaller number and a wider width are used for reducing the number of the gear shifting gears of the lens barrel assembly 400, so that the self-adaptive function of the interpupillary distance of a human eye is utilized for quickly and conveniently adjusting the lens barrel assembly 400 to the gear matched with the interpupillary distance of the user; meanwhile, the pupil distance difference range of different users is limited, and the user can obviously feel the change of the display image after each gear adjustment by the aid of the simplified gear setting, so that the matched gear can be judged more accurately. In addition, the assembly space of the display housing 100 is limited, and meanwhile, the interpupillary distance range of human eyes is about 55 mm-70 mm, so that the movement range of the rack 410 is limited, the number of gear shifting gear teeth 411 with smaller number and wider width can improve the strength of the rack 410, and the processing difficulty and the processing cost of the rack 410 are reduced.
Referring to fig. 3, 6 and 7, the present embodiment uses a reduced number of gear teeth 411 to achieve rapid gear adjustment of the lens barrel assembly 400, and uses a greater number of sector grooves and sector blocks to achieve locking of the gear 500 at any position. Compared to the prior art in which the gear adjusting mechanism is separately provided, the present embodiment uses the combination of the gear shifting gear 411, the gear 500, the locking member 710 and the elastic member 720 (see fig. 2), so as to reduce the processing difficulty and the assembling difficulty of the head-mounted device, and ensure the strength of each component.
Referring to fig. 6 and 7, the first fan-shaped grooves 510 are uniformly distributed around the central axis of the mounting shaft 600, and the arc length of the bottom of the first fan-shaped groove 510 is equal to the arc length of the first fan-shaped block 520, so that the projected area of the first fan-shaped groove 510 is the same as the projected area of the first fan-shaped block 520 along the front projection of the gear 500 in the axial direction. Since the second segment 711 of the locking member 710 is fitted with the first segment groove 510, the area of the second segment 711 in the locking member 710 is substantially the same as the area of the first segment 520 in the gear 500.
Referring to fig. 2, 3, 6 and 7, the arc length of the bottom of the first segment 510 is equal to the tooth pitch of the gear teeth 411, and the arc length of the first segment 520 is equal to the tooth thickness of the gear teeth 411, so that when one gear 500 drives the gear 500 to rotate, the gear 500 is fully engaged with the adjacent gear 500. When the gear 500 is partially disengaged from the gear teeth 411 and partially engaged with the adjacent gear 500, the tooth space of the rack 410 is rotated to the gear mark. Since the arc length of the bottom of the first fan-shaped groove 510 and the arc length of the second fan-shaped block 711 are substantially equal to the arc length of the first fan-shaped block 520, the second fan-shaped block 711 of the locking member 710 can be rotated from within the first fan-shaped groove 510 to the adjacent first fan-shaped block 520, and at this time, the end surface of the locking member 710 is attached to the end surface of the gear 500, and the elastic member 720 between the locking member 710 and the base plate 200 is compressed, so that the acting force between the gear 500 and the locking member 710 is mostly friction force, and the rack 410 can drive the gear 500 to rotate continuously.
When the gear 500 continues to rotate, the gear 500 is almost disengaged from the gear teeth 411 and is fully engaged with the adjacent gear 500, at which time the adjacent gear 500 is rotated to the gear mark, thereby achieving a gear shift of the lens barrel assembly 400. At this time, the second segment 711 of the locking member 710 gradually disengages from the first segment 520 until the second segment 711 is embedded into the adjacent first segment 510, and the elastic member 720 drives the locking member 710 to reset in this process, so as to assist the second segment 711 to extend into the first segment 510, thereby realizing the engagement between the gear 500 and the locking member 710. To continue adjusting the gear of the lens barrel assembly 400, the gear 500, the rack 410 and the locking member 710 may continue to move relative to each other in the above-described manner.
Referring to fig. 6 and 7, the sidewall slope (tangent value of the slope angle θ1) of each first fan-shaped groove 510 is reduced, and the edges of the first fan-shaped groove 510 are rounded or chamfered. The sidewall slope (tangent value of the slope angle θ2) of the second fan-shaped groove 712 decreases, and the edges of the second fan-shaped groove 712 are rounded or chamfered. The sidewall slope (tangent to the slope angle θ1) of each first segment 520 decreases, and the edges of the first segments 520 are rounded or chamfered. While the side wall slope (tangent value of the slope angle θ2) of the second segment 711 is reduced, the edges of the second segment 711 are rounded or chamfered.
The reduced sidewall slope of the first fan-shaped groove 510 and the reduced sidewall slope of the second fan-shaped groove 712 facilitate the transfer of the second fan-shaped block 711 from the first fan-shaped groove 510 and the transfer of the first fan-shaped block 520 from the second fan-shaped groove 712, thereby facilitating the gear shift of the lens barrel assembly 400 (see fig. 3).
The edges of the first fan-shaped groove 510 are arranged with the edges of the second fan-shaped groove 712 in a chamfering or rounding way, and the edges of the first fan-shaped block 520 are arranged with the edges of the second fan-shaped block 711 in a chamfering or rounding way, so that the first fan-shaped block 520 and the second fan-shaped block 711 can be conveniently rotated in and out; while the wear of the first segment 520 and the second segment 711 can be reduced.
Referring to fig. 5, the surface of the base 310 facing the locking member 710 is further provided with a fixing post 320 and at least one guide post 330, one end of the fixing post 320 is fixed to the middle of the base 310, the other end extends toward the locking member 710, and a first distance is provided between the end of the fixing post 320 and the end surface of the locking member 710, and the first distance is equal to the moving distance of the locking member 710.
Referring to fig. 5 and 6, when the second segment 711 of the locking member 710 is rotated from the first segment 510 to the surface of the first segment 520, the gear 500 drives the locking member 710 to move in a direction approaching the substrate 200 (referring to fig. 4), and since the first distance between the locking member 710 and the end of the fixing post 320 is equal to the moving distance of the locking member 710, when the second segment 711 is attached to the surface of the first segment 520, the locking member 710 abuts against the end surface of the fixing post 320, so that the limit position of the locking member 710 can be limited by the fixing post 320.
Referring to fig. 5, the top and bottom of the locking member 710 are provided with a notch 713 (or a third through hole) along the axial direction of the gear 500, and the notch 713 corresponds to the position of the guide post 330, so that the guide post 330 can be embedded into the notch 713. Since a torsion force is applied to the locking member 710 when the gear 500 rotates, the locking member 710 is restricted from rotating by the engagement of the notch 713 with the guide post 330, so that the locking member 710 can only be mounted with the axial movement of the shaft 600, and the movement accuracy of the locking member 710 can be improved. In the present application, two guide posts 330 are disposed on the base 310, and the two guide posts 330 are respectively disposed on two sides of the fixed post 320, so that the distribution of the force applied by the guide posts 330 on the locking member 710 is symmetrical.
Referring to fig. 4 and 5, the guide post 330 includes a first post 331 and a second post 332 connected in a stepped manner, wherein the first post 331 is connected to the surface of the base 310, and the second post 332 is disposed through the notch 713. Since the second post 332 is completely located in the first post 331 in the front projection of the guide post 330, the cross-sectional area of the first post 331 in the vertical direction is larger than the cross-sectional area of the second post 332 in the vertical direction, and therefore the connection portion between the first post 331 and the second post 332 forms a connection portion. There is a second distance between the end face of the locking member 710 and the engagement point, and the second distance is equal to the movement distance of the locking member 710.
Referring to fig. 4 to 6, since the second post 332 is matched with the notch 713, the gear 500 drives the locking member 710 to move in a direction approaching the substrate 200 when the second segment 711 of the locking member 710 is rotated from the first segment 510 to the surface of the first segment 520, and since the second distance between the locking member 710 and the engagement portion is equal to the moving distance of the locking member 710, when the second segment 711 is attached to the surface of the first segment 520, the locking member 710 can abut against the engagement portion, thereby limiting the limit position of the locking member 710 by the engagement portion.
Referring to fig. 8, the lens barrel assemblies 400 are movably connected to the base plate 200, at least three protruding arms 420 are disposed on each lens barrel assembly 400, at least three first limiting grooves 210 are correspondingly disposed on the base plate 200, and each protruding arm 420 is embedded into one of the first limiting grooves 210 and is capable of moving along the direction in which the first limiting groove 210 is disposed. The length of the first limiting groove 210 is greater than or equal to the travel of the rack 410, so that the movement direction of the lens barrel assembly 400 can be limited, and the collision and interference between the protruding arm 420 and the first limiting groove 210 can be avoided.
Referring to fig. 8, all the protruding arms 420 of each lens barrel assembly 400 are arranged in a triangle shape, so that each part of the lens barrel assembly 400 is connected with the substrate 200 more stably, detachment of the lens barrel assembly 400 from the substrate 200 can be avoided, and the position accuracy of the lens barrel assembly 400 during adjustment can be improved.
Referring to fig. 2 and 8, the head-mounted display device further includes a stopper 430 and a limiting post 230, wherein a plurality of stoppers 430 are disposed on a surface of the lens barrel assembly 400 facing the substrate 200, and the substrate 200 is correspondingly provided with a second limiting groove 220, such that the stoppers 430 can correspondingly extend into the second limiting groove 220. The length of the second limiting groove 220 is greater than or equal to the stroke of the rack 410, and when the stopper 430 moves in the second limiting groove 220, the movement direction of the lens barrel assembly 400 can be limited, and meanwhile, collision and interference between the stopper 430 and the second limiting groove 220 can be avoided.
Referring to fig. 2 and 8, the limit post 230 can be inserted into the substrate 200 along the movement direction of the lens barrel assembly 400 and fixed relative to the substrate 200. The limit post 230 is inserted from one end of the substrate 200, passes through the second limit slot 220 and the stop block 430 therein, and is inserted from the other end of the substrate 200. The movement direction of the stopper 430 can be limited by the relatively fixed limit posts 230, so that the movement direction of the lens barrel assembly 400 during push-pull can be limited, and the precision of the lens barrel assembly 400 during gear shifting can be ensured.
The foregoing has provided a detailed description of a head mounted display device, wherein specific examples have been employed to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in understanding the methods of the present application and their core ideas; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. A head-mounted display device, comprising:
the display shell is internally provided with an assembly space and two assembly holes, and the assembly holes are communicated with the assembly space;
a base plate provided in the assembly space and connected to an inner wall of the display housing;
the two groups of lens barrel components can be arranged in the assembly holes in a translation mode;
a gear rotatably connected to the base plate through a mounting shaft, the gear being located between the two lens barrel assemblies;
two racks, each of which is connected to one of the lens barrel assemblies, the two racks being respectively engaged to opposite sides of the gear; each rack comprises at least two gear shifting gear teeth, and at least one gear shifting gear tooth corresponds to one gear of the lens cone assembly; and
a locking assembly provided in the assembly space and capable of abutting against one end face of the gear; the locking assembly includes:
the locking piece is sleeved outside the mounting shaft and can slide along the central axis direction of the mounting shaft; and
an elastic member provided between the lock member and the substrate, one end of the elastic member being abutted against the lock member, and the other end being abutted against the substrate;
when the lens barrel assembly is translated, the gear is driven by the rack to rotate, so that the gear of the lens barrel assembly is switched; when the barrel assembly is not translated, the locking assembly abuts the gear such that the gear is locked;
the end face of the gear, which faces one side of the locking piece, is provided with more than two first sector blocks, the first sector blocks are uniformly distributed along the circumferential direction of the gear, and a first sector groove is formed between two adjacent first sector blocks;
the end face of the locking piece, facing one side of the gear, is provided with more than two second fan-shaped blocks which are uniformly distributed, and a second fan-shaped groove is formed between two adjacent second fan-shaped blocks;
when the locking piece is propped against the gear by the elastic piece, each first sector block is blocked into one second sector groove, and each second sector block is blocked into one first sector groove;
when the lens barrel assembly is translated, the gear is rotated and at least one gear shift is realized;
in each gear shifting process, one first sector block slides into the adjacent second sector groove from one second sector groove; sliding one second sector block from one first sector groove to the adjacent other first sector groove;
the top and the bottom of the locking piece are provided with notches or third through holes;
the base plate comprises two guide posts which are vertically connected to the surface of the base plate facing the side of the gear; the two guide posts are respectively positioned above and below the mounting shaft;
the tail end of each guide post is respectively inserted into one notch or one third through hole correspondingly.
2. The head mounted display device of claim 1, wherein the substrate comprises:
a substrate body; and
the base protrudes out of the middle of the base plate body and is arranged opposite to the gear;
the mounting shaft penetrates through a first through hole in the middle of the gear to be connected to the base, and the gear can rotate on the surface of the mounting shaft.
3. The head mounted display device of claim 1, wherein the display device further comprises a display device,
the side wall gradient of the first fan-shaped groove and the side wall gradient of the second fan-shaped groove are reduced, and the edges of the first fan-shaped groove and the edges of the second fan-shaped groove are chamfered or rounded;
the side wall gradient of the first sector block and the side wall gradient of the second sector block are both reduced, and the edges of the first sector block and the edges of the second sector block are both chamfered or rounded.
4. The head mounted display device of claim 1, wherein the display device further comprises a display device,
the arc length of the bottom surface of the first fan-shaped groove is equal to the tooth pitch of the gear shifting gear teeth, and the arc length of the first fan-shaped block is equal to the tooth thickness of the gear shifting gear teeth.
5. The head mounted display device of claim 1, wherein the display device further comprises a display device,
each lens cone assembly is provided with at least three extending arms which are arranged in a triangle shape;
the base plate is correspondingly provided with at least three first limit grooves, and one protruding arm is embedded into one first limit groove;
the length of the first limit groove is greater than or equal to the stroke of the rack.
6. The head mounted display device of claim 1, wherein the display device further comprises a display device,
and a gap is reserved between the lens barrel assembly and the hole wall of the assembly hole.
7. The head mounted display device of claim 1, further comprising:
a stopper connected to the barrel assembly; and
the limiting column penetrates through the substrate;
the base plate is provided with a second limit groove, the length of the second limit groove is longer than or equal to the stroke of the rack, and the stop block is embedded into the second limit groove to move; the limiting column is inserted into the base plate along the movement direction of the rack and penetrates through the second limiting groove and the stop block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310668433.3A CN116400509B (en) | 2023-06-07 | 2023-06-07 | Head-mounted display device |
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| CN202310668433.3A CN116400509B (en) | 2023-06-07 | 2023-06-07 | Head-mounted display device |
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| CN117555153A (en) * | 2024-01-11 | 2024-02-13 | 玩出梦想(上海)科技有限公司 | Head-mounted display device |
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| CN206818977U (en) * | 2017-05-08 | 2017-12-29 | 潍坊歌尔电子有限公司 | A kind of tunable arrangement of bandage |
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| KR20190079263A (en) * | 2017-12-27 | 2019-07-05 | 엘지전자 주식회사 | Head mounted display |
| CN210129071U (en) * | 2019-06-28 | 2020-03-06 | 歌尔科技有限公司 | Flexible regulation formula bandage and head-mounted apparatus |
| CN210835433U (en) * | 2019-08-23 | 2020-06-23 | 北京市商汤科技开发有限公司 | Intelligent glasses |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206818977U (en) * | 2017-05-08 | 2017-12-29 | 潍坊歌尔电子有限公司 | A kind of tunable arrangement of bandage |
| KR20190079263A (en) * | 2017-12-27 | 2019-07-05 | 엘지전자 주식회사 | Head mounted display |
| CN108563021A (en) * | 2018-03-16 | 2018-09-21 | 京东方科技集团股份有限公司 | Interpupillary distance regulating device wears display equipment and step by step regulating mechanism |
| CN210129071U (en) * | 2019-06-28 | 2020-03-06 | 歌尔科技有限公司 | Flexible regulation formula bandage and head-mounted apparatus |
| CN210835433U (en) * | 2019-08-23 | 2020-06-23 | 北京市商汤科技开发有限公司 | Intelligent glasses |
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Address after: Room 501, Building 3, No. 1 Caosong Road, Xinqiao Town, Songjiang District, Shanghai, February 2016 Patentee after: Play Out Dreams (Shanghai) Technology Co.,Ltd. Address before: 201612 Room 501, building 3, No. 1, caosong Road, Xinqiao Town, Songjiang District, Shanghai Patentee before: Shanghai yuweia Technology Co.,Ltd. |
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