CN108721072B - Component of HMD device and sight distance adjusting mechanism thereof - Google Patents
Component of HMD device and sight distance adjusting mechanism thereof Download PDFInfo
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- CN108721072B CN108721072B CN201810708059.4A CN201810708059A CN108721072B CN 108721072 B CN108721072 B CN 108721072B CN 201810708059 A CN201810708059 A CN 201810708059A CN 108721072 B CN108721072 B CN 108721072B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 59
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- 238000002645 vision therapy Methods 0.000 abstract description 7
- 230000004379 myopia Effects 0.000 abstract description 6
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- 206010047531 Visual acuity reduced Diseases 0.000 abstract description 2
- 208000003464 asthenopia Diseases 0.000 abstract description 2
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- 210000000695 crystalline len Anatomy 0.000 description 17
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- 210000003205 muscle Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
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- A—HUMAN NECESSITIES
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Abstract
The invention provides a vision distance adjusting mechanism, which comprises a lens component, a display component and a vision distance adjusting component, wherein the vision distance adjusting mechanism is an improvement on a lens mechanism and a display mechanism of the prior VR integrated machine, is compact and small in occupied space, and is mainly arranged between the lens mechanism and the display mechanism; the vision training method applied to the HMD device can help the user to perform far-near point vision training anytime and anywhere, can control the myopia degree and recover the vision for the user with poor vision, can eliminate or relieve eye fatigue caused by long-time watching of the film and television, and can effectively prevent myopia.
Description
Technical Field
The present invention relates to visual function training devices, and more particularly, to a component of an HMD device and a visual distance adjustment mechanism thereof.
Background
According to incomplete statistics, the number of juveniles in China is 3.2 hundred million at present, wherein the number of people with poor eyesight is up to 2.7 hundred million, and the reason for the situation is various, one is that the learning time of the juveniles in our country is longer, the average learning time is 9 hours per day, and the other is that the popularization of electronic products is realized, and the time for the juveniles to use the electronic products per day is longer. The learning intensity is high, the trend of long-time learning and game using the digital electronic product is irreversible, and the eye condition of teenagers is worry.
In addition to wearing glasses to obtain better eyesight, teenagers with poor eyesight can also participate in far-near point vision training courses to recover eyesight. A line trainer is a device for far-near point vision training in which a user first wears myopic spectacles and then puts his head on a cradle, a physician starts moving a gazing object slowly in the direction of the user and continuously asks the user if he can see clearly, and when he answers are not clear, stops moving the gazing object and sets the position of the gazing object at this time as a near point, and then zooms out the gazing object, the far point being determined in a similar manner. Then, near point training and far point training can be performed: the near point training is to move the gazing object back and forth between the near point and the far point, train the eye muscle system of the user, improve the shape of the crystalline lens, improve the adjustment capability and optimize the imaging quality; the far point training is to continuously reciprocate a target gazing object in a far point-to-infinity range, and stimulate a retina and cerebral cortex nerve signal transmission system through focusing and defocusing changes, so that the interpretation capability of the brain on images is improved.
The far-near point vision training method can indeed restore the vision of a person to a certain extent, but the general person needs to go to a hospital or a clinic with the straight line training instrument specially, and most of the time is used in the school for teenagers, and the person cannot go to the clinic frequently for treatment, so that the training period is long, and the effect is also greatly reduced.
HMD devices, i.e., head mounted visual devices, such as VR all-in-one machines manufactured and sold by companies such as Oculus, samsung, sony, millet, etc., currently have a common problem in that users are attracted to entertainment content and take longer to eye, which is particularly likely to cause myopia or further deepen the degree of myopia for teenagers.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems of the prior far and near point training mode and the HMD equipment, the invention provides a component of the HMD equipment and a vision distance adjusting mechanism thereof, which are an improved structure based on the prior VR integrated machine, have small size and convenient wearing, can be trained by a user at any time by utilizing the fragment time, and have short training period and obvious effect.
The technical scheme adopted for solving the technical problems is as follows: a line of sight adjustment mechanism comprising a lens assembly, a display assembly and a line of sight adjustment assembly, the line of sight adjustment assembly comprising:
a first bevel gear is fixed at one end of the first connecting column;
the motor, the output shaft of the said motor is fixed with the first cylindrical gear, the said first cylindrical gear is meshed with second cylindrical gear, the said second cylindrical gear is fixed on said first connecting column;
the transmission pair comprises a second connecting column, a second bevel gear, a third bevel gear, a fourth bevel gear and a screw rod, wherein two ends of the second connecting column are fixedly connected with one second bevel gear respectively, the third bevel gear is meshed with one second bevel gear and the first bevel gear, the central shafts of the third bevel gear and the first bevel gear are perpendicular to each other, the other second bevel gear is meshed with the fourth bevel gear, and the fourth bevel gear is fixed on the screw rod;
the sliding block is in threaded connection with the screw rod;
the screw rod is fixedly connected with the lens assembly and can rotate, and the display assembly is fixedly connected with the sliding block.
Preferably, two ends of the first connecting column are respectively fixed with a first bevel gear, and the two first bevel gears are respectively connected with one transmission pair.
Preferably, the lens assembly includes a first fixing plate and a second fixing plate, the first and second connection posts being disposed between the first and second fixing plates;
the transmission pair further comprises a first rotating shaft, two ends of the first rotating shaft are respectively connected with the first fixing plate and the second fixing plate in a rotating way, and the third bevel gear is sleeved on the first rotating shaft;
the transmission pair further comprises a second rotating shaft, one end of the second rotating shaft is rotationally connected with the first fixing plate, the other end of the second rotating shaft is coaxially connected with one end of the screw rod through a through hole in the second fixing plate, the other end of the screw rod extends in a direction away from the first fixing plate, and the fourth bevel gear is sleeved on the second rotating shaft.
Preferably, the screw is sleeved with a guide post, and the sliding block is in sliding fit with an inner sliding rail of the guide post.
Preferably, the two guide posts are an upper guide post and a lower guide post respectively, the lower part of the upper guide post is provided with a second strip-shaped notch, and the left part and the right part of the lower guide post are respectively provided with a first strip-shaped notch;
the two sliding blocks are an upper sliding block and a lower sliding block respectively, the display assembly comprises a third fixing plate, the third fixing plate is fixedly connected with the upper sliding block through a second connecting piece, and the third fixing plate is fixedly connected with the lower sliding block through two first connecting pieces;
the first connecting piece is in sliding fit with the upper guide post along the second strip-shaped notch, and the two second connecting pieces are in sliding fit with the lower guide post along the two second strip-shaped notches respectively.
Preferably, the display assembly further comprises a light shielding ring, the first fixing plate is provided with a lens hole opposite to the light shielding ring, the light shielding ring is fixedly connected with the third fixing plate and extends to the first fixing plate in a pyramid shape,
an assembly of an HMD device comprises two sight distance adjusting mechanisms, namely a left eye adjusting mechanism and a right eye adjusting mechanism, wherein the left eye adjusting mechanism and the right eye adjusting mechanism are in mirror symmetry;
the assembly of the HMD device further includes a pupil distance adjusting mechanism, the pupil distance adjusting mechanism includes a first rack, a second rack, a third cylindrical gear, a fourth cylindrical gear and a rotating wheel, the first rack is fixed at a lower right corner of the right second fixing plate, the second rack is fixed at an upper left corner of the right second fixing plate, the third rack is fixed at an upper right corner of the left second fixing plate, the third cylindrical gear is meshed with the first rack and is coaxially fixed with the rotating wheel, and the fourth cylindrical gear is meshed with the second rack and the third rack.
The invention has the beneficial effects that the vision distance adjusting mechanism is an improvement on the lens mechanism and the display mechanism of the prior VR all-in-one machine, is compact and occupies small space, and the main adjusting mechanism is arranged between the lens mechanism and the display mechanism; the vision training method applied to the HMD device can help the user to perform far-near point vision training anytime and anywhere, can control the myopia degree and recover the vision for the user with poor vision, can eliminate or relieve eye fatigue caused by long-time watching of the film and television, and can effectively prevent myopia.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic perspective view of embodiment 1 of the visual range adjusting mechanism.
Fig. 2 is a schematic perspective view of a visual range adjustment assembly of embodiment 1 of a visual range adjustment mechanism.
Fig. 3 is a schematic perspective view of embodiment 1 of the visual range adjusting mechanism.
Fig. 4 is an exploded schematic view of embodiment 1 of the visual range adjustment mechanism.
Fig. 5 is a partial structural schematic diagram of embodiment 1 of the visual range adjustment mechanism.
Fig. 6 is a partial structural schematic diagram of embodiment 1 of the visual range adjustment mechanism.
Fig. 7 is an exploded schematic view of embodiment 2 of the visual range adjustment mechanism.
Fig. 8 is a schematic perspective view of embodiment 2 of the visual range adjusting mechanism.
Fig. 9 is an exploded schematic view of embodiment 3 of the visual range adjustment mechanism.
Fig. 10 is a partial structural schematic diagram of embodiment 3 of the visual range adjustment mechanism.
Fig. 11 is a partial structural schematic diagram of embodiment 3 of the visual range adjustment mechanism.
Fig. 12 is a schematic perspective view of an embodiment of components of an HMD device.
Fig. 13 is a partial structural schematic diagram of an embodiment of components of an HMD device.
Fig. 14 is a partial structural schematic diagram of an embodiment of components of an HMD device.
In the figure, 100, a lens assembly, 200, a display assembly, 300, a viewing distance adjusting assembly, 101, a first fixing plate, 102, a second fixing plate, 103, a lens hole, 104, a notch, 105, a guide post, 106, a first bar-shaped notch, 107, a second bar-shaped notch, 201, a third fixing plate, 202, a first connector, 203, a light shielding ring, 204, a second connector, 301, a first connecting post, 302, a first bevel gear, 303, a first cylindrical gear, 304, a second cylindrical gear, 305, a second connecting post, 306, a second bevel gear, 307, a third bevel gear, 308, a fourth bevel gear, 309, a screw, 310, a slider, 311, a motor, 312, a first rotation shaft, 313, a second rotation shaft, 401, a first rack, 402, a second rack, 403, a third rack, 404, a third cylindrical gear, 405, a fourth cylindrical gear, 406, and a rotation wheel.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1, the present invention provides an embodiment 1 of a viewing distance adjustment mechanism comprising a lens assembly 100, a display assembly 200, and a viewing distance adjustment assembly 300; as shown in fig. 2, the viewing distance adjustment assembly includes:
a first connection post 301, a first bevel gear 302 being fixed to a lower end of the first connection post 301;
the motor 311, the output shaft of the motor 311 is fixed with the first cylindrical gear 303, the first cylindrical gear 303 is meshed with the second cylindrical gear 304, and the second cylindrical gear 304 is sleeved on the first connecting column 301;
the transmission pair comprises a second connecting column 305, a second bevel gear 306, a third bevel gear 307, a fourth bevel gear 308 and a screw 309, wherein two ends of the second connecting column 305 are respectively fixed with one second bevel gear 306, the second bevel gear 306 and the first bevel gear 302 at one end of the second connecting column 305 are meshed with the third bevel gear 307, the central shafts of the second connecting column 305 and the first bevel gear 302 are perpendicular to each other, the second bevel gear 306 at the other end of the second connecting column 305 is meshed with the fourth bevel gear 308, and the fourth bevel gear 308 is fixed on the screw 309;
a slider 310, the slider 310 being in threaded connection with the screw 309;
the screw 309 is fixedly connected and rotatable with the lens assembly, and the display assembly is fixedly connected with the slider 310.
When the vision distance adjusting mechanism is used for conducting far and near point training, the distance between the display assembly and the lens assembly is continuously changed by controlling the motor to rotate, the display screen is fixed on the display assembly, an image on the display screen reciprocates between a near point and a far point relative to human eyes, near point training is achieved, and the image on the display screen reciprocates between the far point and a farther point relative to human eyes, so that far point training is achieved.
As shown in fig. 3 to 4, the lens assembly includes a first fixing plate 101 and a second fixing plate 102, where a lens hole 103 for installing a lens and a notch 104 for adapting to the nose bridge of a user are formed on the first fixing plate 101; two vision distance adjusting mechanisms are required to be assembled in the VR integrated machine and are respectively used for training of the left eye and the right eye, the structures of the left vision distance adjusting mechanism and the right vision distance adjusting mechanism are mirror symmetry, and the embodiment 1 is the right vision distance adjusting mechanism, so that the notch 104 is positioned at the left lower corner of the first fixing plate 101. The first fixing plate 101 and the second fixing plate 102 are arranged in parallel, the first connecting column and the second connecting column are located between the first fixing plate 101 and the second fixing plate 102, the first connecting column is vertical and close to the right side, and the second connecting column is horizontally arranged and close to the lower side. The transmission pair further comprises a first rotating shaft 312, the first rotating shaft 312 is perpendicular to the first fixing plate 101, two ends of the first rotating shaft 312 are respectively connected with the first fixing plate 101 and the second fixing plate 102 in a rotating mode, and a third bevel gear is sleeved on the first rotating shaft 312. The transmission pair further comprises a second rotating shaft 313, the second rotating shaft 313 is perpendicular to the first fixing plate 101, one end of the second rotating shaft 313 is rotationally connected with the first fixing plate 101, the other end of the second rotating shaft 313 and one end of the screw rod are coaxially fixed through a through hole in the second fixing plate 102, or the second rotating shaft 313 and the screw rod are of an integrated structure, and the other end of the screw rod extends in a direction away from the first fixing plate 101 perpendicular to the second fixing plate 102. The fourth bevel gear is located between the first fixing plate 101 and the second fixing plate 102 and is sleeved on the second rotating shaft 313. The screw is sleeved with a guide post 105, one end of the guide post 105 is fixed on the second fixing plate 102, or they are of an integral structure, and the other end of the guide post 105 extends in a direction away from the first fixing plate 101. The sliding block is in sliding fit with the inner slide of the guide post 105, and a first strip-shaped notch 106 is respectively formed in the left part and the right part of the guide post 105.
As shown in fig. 5 to 6, the display assembly includes a third fixing plate 201, and the third fixing plate 201 is fixedly connected with a slider 310 through two first connecting pieces 202; in this example, the first connecting members 202 are L-shaped, and the two short sides of the two first connecting members 202 are respectively fixed at the lower left corner and the lower right corner of the third fixing plate 201 by screws, and their long sides are fixedly connected with the slider 310 by screws through the first bar-shaped notch, and when the slider 310 moves along the inner slide of the guide post 105, the long sides move together with the slider 310 at the first bar-shaped notch 106. The display assembly further comprises a shading ring 203, the shading ring 203 is in a frustum shape, the shading ring 203 is opposite to the lens hole 103, the shading ring 203 is fixedly connected with the third fixing plate 201 through a screw, and the larger end of the shading ring 203 is attached to the third fixing plate 201 and covers the display screen. To make room for the nose of the user, a notch is provided in the lower left of the shade ring 203.
As shown in fig. 7 to 8, embodiment 2 of the viewing distance adjusting mechanism is different from embodiment 1 in that: the transmission pair is arranged from the lower part to the upper part, besides, the two sides of the guide post 105 are not provided with notches, a second strip-shaped notch 107 is arranged at the lower part, and the sliding block is fixedly connected with the third fixing plate 201 through a second connecting piece 204.
As shown in fig. 9 to 11, in embodiment 3 of the viewing distance adjusting mechanism, the viewing distance adjusting mechanism is provided with the upper and lower sets of transmission pairs in embodiment 1 and embodiment 2, the second cylindrical gear is located in the middle of the first connecting column, and the weight of the embodiment is increased due to the two sets of transmission pairs, but the stability of the third fixing plate during reciprocating motion is higher.
As shown in fig. 12 to 14, an embodiment of a component of an HMD device includes two line-of-sight adjusting mechanisms of embodiment 3, which are a left eye adjusting mechanism and a right eye adjusting mechanism, respectively, and the left eye adjusting mechanism and the right eye adjusting mechanism are mirror-symmetrical; it also includes pupil distance adjustment mechanism, pupil distance adjustment mechanism includes first rack 401, second rack 402, third rack 403, third cylindrical gear 404, fourth cylindrical gear 405 and runner 406, first rack 401 is fixed in the lower right corner of the second fixed plate on the right side, second rack 402 is fixed in the upper left corner of the second fixed plate on the right side, third rack 403 is fixed in the upper right corner of the second fixed plate on the left side, third cylindrical gear 404 meshes with first rack 401 and is fixed with the runner 406 coaxial, fourth cylindrical gear 405 meshes with second rack 402 and third rack 403. The structure is used for manually adjusting the interpupillary distance, and is actually used for adjusting the distance between the lens assemblies at the left side and the right side and the distance between the display assemblies at the left side and the right side; the rotating wheel 406 and the third cylindrical gear 404 are rotatably connected to the housing of the VR integrated machine through a third rotating shaft, and when the rotating wheel 406 is rotated, the transmission process is as follows: the third cylindrical gear 404 rotates synchronously, the first rack 401 moves to drive the first fixed plate on the right side to move, the second rack 402 moves, the fourth cylindrical gear 405 rotates, the third rack 403 moves to drive the first fixed plate on the left side to move, and therefore the distance is changed.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. A viewing distance adjustment mechanism comprising a lens assembly, a display assembly and a viewing distance adjustment assembly, wherein the viewing distance adjustment assembly comprises:
a first bevel gear is fixed at one end of the first connecting column;
the motor, the output shaft of the said motor is fixed with the first cylindrical gear, the said first cylindrical gear is meshed with second cylindrical gear, the said second cylindrical gear is fixed on said first connecting column;
the transmission pair comprises a second connecting column, a second bevel gear, a third bevel gear, a fourth bevel gear and a screw rod, wherein two ends of the second connecting column are fixedly connected with one second bevel gear respectively, the third bevel gear is meshed with one second bevel gear and the first bevel gear, the central shafts of the third bevel gear and the first bevel gear are perpendicular to each other, the other second bevel gear is meshed with the fourth bevel gear, and the fourth bevel gear is fixed on the screw rod;
the sliding block is in threaded connection with the screw rod;
the screw is fixedly connected with the lens assembly and can rotate, and the display assembly is fixedly connected with the sliding block;
two ends of the first connecting column are respectively fixed with a first bevel gear, and the two first bevel gears are respectively connected with one transmission pair;
the lens assembly comprises a first fixed plate and a second fixed plate, and the first connecting column and the second connecting column are arranged between the first fixed plate and the second fixed plate;
the transmission pair further comprises a first rotating shaft, two ends of the first rotating shaft are respectively connected with the first fixing plate and the second fixing plate in a rotating way, and the third bevel gear is sleeved on the first rotating shaft;
the transmission pair further comprises a second rotating shaft, one end of the second rotating shaft is rotationally connected with the first fixed plate, the other end of the second rotating shaft is coaxially connected with one end of the screw rod through a through hole in the second fixed plate, the other end of the screw rod extends in a direction away from the first fixed plate, and the fourth bevel gear is sleeved on the second rotating shaft;
the screw is sleeved with a guide post, and the sliding block is in sliding fit with an inner slide of the guide post;
the two guide posts are an upper guide post and a lower guide post respectively, the lower part of the upper guide post is provided with a second strip-shaped notch, and the left part and the right part of the lower guide post are respectively provided with a first strip-shaped notch;
the two sliding blocks are an upper sliding block and a lower sliding block respectively, the display assembly comprises a third fixing plate, the third fixing plate is fixedly connected with the upper sliding block through a second connecting piece, and the third fixing plate is fixedly connected with the lower sliding block through two first connecting pieces;
the first connecting piece is in sliding fit with the upper guide post along the second strip-shaped notch, and the two second connecting pieces are in sliding fit with the lower guide post along the two second strip-shaped notches respectively;
the display assembly further comprises a shading ring, the first fixing plate is provided with a lens hole opposite to the shading ring, and the shading ring is fixedly connected with the third fixing plate and extends to the first fixing plate in a pyramid shape;
the display assembly is fixedly provided with a display screen, the display screen is used for displaying images, the images of the display screen reciprocate between a near point and a far point relative to human eyes, near point training is achieved, the images of the display screen reciprocate between the far point and a farther position relative to the human eyes, and far point training is achieved.
2. An assembly of HMD devices, characterized by: comprising two sight distance adjusting mechanisms as claimed in claim 1, a left eye adjusting mechanism and a right eye adjusting mechanism, respectively, wherein the left eye adjusting mechanism and the right eye adjusting mechanism are in mirror symmetry;
the assembly of the HMD device further includes a pupil distance adjusting mechanism, the pupil distance adjusting mechanism includes a first rack, a second rack, a third cylindrical gear, a fourth cylindrical gear and a rotating wheel, the first rack is fixed at a lower right corner of the right second fixing plate, the second rack is fixed at an upper left corner of the right second fixing plate, the third rack is fixed at an upper right corner of the left second fixing plate, the third cylindrical gear is meshed with the first rack and is coaxially fixed with the rotating wheel, and the fourth cylindrical gear is meshed with the second rack and the third rack.
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| CN201810708059.4A CN108721072B (en) | 2018-07-02 | 2018-07-02 | Component of HMD device and sight distance adjusting mechanism thereof |
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| CN201810708059.4A CN108721072B (en) | 2018-07-02 | 2018-07-02 | Component of HMD device and sight distance adjusting mechanism thereof |
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| CN208809001U (en) * | 2018-07-02 | 2019-05-03 | 常州快来信息科技有限公司 | The component and its sighting distance regulating mechanism of HMD device |
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| CN108721072A (en) | 2018-11-02 |
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