CN104898277B - A kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward - Google Patents
A kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward Download PDFInfo
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- CN104898277B CN104898277B CN201510141292.5A CN201510141292A CN104898277B CN 104898277 B CN104898277 B CN 104898277B CN 201510141292 A CN201510141292 A CN 201510141292A CN 104898277 B CN104898277 B CN 104898277B
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- circular gear
- platen bracket
- housing
- spur rack
- travel mechanism
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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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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention relates to mechanical field.A kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward, including a Helmet Mounted Display main body, Helmet Mounted Display main body includes a housing, a travel mechanism is provided with housing, travel mechanism includes a platen bracket for being provided with display screen, and platen bracket is provided with a circular gear；The drive mechanism of driving circular gear rolling is additionally provided with housing, drive mechanism includes the first spur rack, and the first spur rack is slidably connected with the first slide rail, and the first spur rack is connected with circular gear engagement, the channeling direction of the first slide rail is fore-and-aft direction；One is additionally provided with housing for the second track that circular gear is rolled, the second track is provided with the second spur rack, the second spur rack is connected with circular gear engagement；First slide rail is parallel with the channeling direction of the second track.By conventional fixed-type platen bracket, it is movable type to improve to the present invention, is easy to move forward and backward display screen.
Description
Technical field
The present invention relates to mechanical field, and in particular to virtual implementing helmet.
Background technology
Virtual reality be using computer simulation produce a virtual world for three dimensions, there is provided user on vision,
The simulation of the sense organs such as the sense of hearing, tactile, allows user as being personally on the scene, and can in time, without limitation observe three degree of skies
Interior things.Virtual reality system is to be generated through vision, hearing, touch feel etc. by computer to act on user, its is produced body
Face the interactive virtual environments of its border sensation.Man-machine interaction in virtual reality is far beyond keyboard and traditional mould of mouse
Formula, using the sensor device of digital helmet, digital glove etc., Three-Dimensional Interaction Technology and speech recognition, phonetic entry technology into
It is important man-machine interaction means.Wherein helmet display unit is the key that virtual reality perception is realized, and now on the market
Platen bracket in Helmet Mounted Display is all immovable, and this can bring very big inconvenience to user in experience of the process.
The content of the invention
It is an object of the invention to provide a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward, to solve
Certainly above-mentioned technical problem.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward, including a Helmet Mounted Display main body, institute
Stating Helmet Mounted Display main body includes a housing, it is characterised in that a travel mechanism, travel mechanism's bag are provided with the housing
A platen bracket for being provided with display screen is included, the platen bracket is provided with a circular gear；
The drive mechanism that the driving circular gear is rolled is additionally provided with the housing, the drive mechanism includes first
Spur rack, first spur rack is slidably connected with the first slide rail, and first spur rack engages company with the circular gear
Connect, the channeling direction of first slide rail is fore-and-aft direction；
One is additionally provided with the housing for the second track that the circular gear is rolled, second track is provided with the
Two spur racks, second spur rack is connected with circular gear engagement；
First slide rail is parallel with the channeling direction of second track.
By conventional fixed-type platen bracket, it is movable type to improve to the present invention, is easy to move forward and backward display screen, is realized
The stop gone up at an arbitrary position, for improving visual experience when human body is viewed and admired.
When using the present invention, the second spur rack is fixed in frame and remains stationary, before the first spur rack can be
Move afterwards, the translation of the first spur rack can drive circular gear to be rolled, so as to realize moving forward and backward for platen bracket.
First spur rack is located at the left side of the circular gear, and second spur rack is located at the circular gear
Right side, the centerline direction of the circular gear is vertical direction.
Or, first spur rack is located at the right side of the circular gear, and second spur rack is located at the circle
The left side of gear, the centerline direction of the circular gear is vertical direction.
The drive mechanism includes adjusting key, and the adjusting key is located on the outer wall of the housing, the adjusting key connection
First spur rack.
The present invention is easy to adjust the motion state of the first spur rack by adjusting key.
The adjusting key connects a connecting rod, and the adjusting key connects first spur rack by the connecting rod；
A chute is offered on the outer wall of the housing, the width of the connecting rod matches with the width of the chute,
Channeling direction of the length direction of the chute parallel to first slide rail.
It is easy to regulation manually.
The adjusting key connects a control system, and the control system connects the first motor, and first motor connects
A transmission mechanism is connect, the transmission mechanism connects first spur rack.
So as to realize motorized adjustment.
The first spur rack left side is fixed with a spring, and the elastic direction of the spring is horizontal direction.
The present invention keeps the second spur rack to be in engagement all the time with circular gear by spring.
It is fixedly connected a boss on the left of the spring, the inwall of the housing is provided with one for the of boss movement
Three slide rails, the channeling direction of the channeling direction of the 3rd slide rail parallel to first slide rail.
Allow boss to be pressed on housing all the time under spring force, circle is realized by the friction of boss and the 3rd slide rail
The stop that shape gear is gone up at an arbitrary position.
The boss is connected with a retaining mechanism.
The present invention by being provided with a retaining mechanism so that adjust the first spur rack accordingly engages shape with mirror holder outline
State.So as to realize self-locking, anti-rolling.
An elongated slot to make way is offered on the outer wall of the housing.It is easy to implement self-locking.
First slide rail is fixedly connected with the housing, and the first spur rack lower section is provided with one with first slide rail
The roller for matching.The present invention by roller in the first slide rail so as to realize being slidably connected for the first spur rack and housing.
Used as a kind of preferred scheme, the platen bracket includes a vertical support bar, and the center of the circular gear is opened
A through hole consistent with the support bar external diameter is provided with, the support bar passes through the through hole；
At least two rollers are provided with below the platen bracket, at least two chutes being parallel to each other are provided with the housing
Group, the chute group matches with the roller；
Channeling direction of the channeling direction of the chute group parallel to first slide rail.
The anterior-posterior translation moved forward and backward so as to driving display screen that the present invention passes through circular gear.
Used as another preferred scheme, the circular gear is fixedly connected a display screen, the center line of the display screen with
The centerline of the circular gear is on same vertical line；
A rotating disk is provided between the display screen and the circular gear, the rotating disk includes a fixture, a rotation
Turn part, the fixture is fixedly connected the circular gear, and the revolving part is fixedly connected the display screen, the revolving part bag
Include a rotating shaft, the centerline of the center line of the rotating shaft and the circular gear is in same vertical line；
The circular gear is provided with a displacement transducer, and institute's displacement sensors are a wireless displacement sensors, described
A wireless communication module is provided with displacement transducer, institute's displacement sensors are connected by the wireless communication module wireless telecommunications
One microprocessor system, the wireless receiving mould that the microprocessor system connection one matches with the wireless communication module
Block；
The microprocessor system connects the second motor, and second motor connects described by a drive disk assembly
Rotating shaft.
The present invention by after the anglec of rotation that displacement transducer detects circular gear, by microprocessor system control
Second motor rotates corresponding angle, so as to realize that display screen carries out the rotation of the reverse anglec of rotation relative to circular gear
Turn, so as to realize by the anterior-posterior translation moved forward and backward so as to driving display screen of circular gear.
The anglec of rotation of the circular gear is equal to the anglec of rotation of the display screen, the direction of rotation of the circular gear
It is different from the anglec of rotation of the display screen.
Second track is provided with two baffle plates being parallel to each other, respectively first baffle, second baffle, and described
One baffle plate is located at the top of the second baffle parallel to horizontal plane, the first baffle.
The first baffle is equal to the thickness of the circular gear with the spacing of the second baffle；
Ceramic layer is coated with the lower surface of the first baffle and the upper surface of the second baffle.
Play anti-rust action.Additionally, by ceramic layer realize circular gear roll during, reduce with first baffle,
The frictional force of second baffle.
It is provided with an eyepiece in front of the display surface of the display screen, the front end face of the eyepiece is first surface, described the
Towards the display surface of the display screen, the rear end face of the eyepiece is the second curved surface to one curved surface, and second curved surface is towards emergent pupil
Face；
The first surface center is in outer gibbosity, and the edge of the first surface is in inner concavity, and second curved surface is in outer
Convex.
The present invention use goggle structure shown for virtual reality device, optimize the goggle structure of traditional double evagination,
On the premise of 2k resolution ratio, in specific spatial dimension, it is capable of achieving distortion factor and is less than 10%, aberration is small, the angle of visual field 120
Degree, magnifying power is suitable, can obtain the optical lens of preferable image quality on y directions in small extent of the error.
The first surface is one aspherical, the asphericity coefficient of the first surface
Wherein,
| R | 20.90 |
| K | -0.514965 |
| A | -8.16235e-006 |
| B | -5.64210e-009 |
| C | -2.34590e-011 |
| D | -5.84926e-014 |
| E | 0.00000e+000 |
| F | 0.00000e+000 |
| G | 0.00000e+000 |
| H | 0.00000e+000 |
| J | 0.00000e+000 |
Second curved surface is one aspherical, the asphericity coefficient of second curved surface
Wherein,
| R | 324.5 |
| K | 0.066702 |
| A | -1.18590e-005 |
| B | 5.23218e-009 |
| C | -1.27637e-011 |
| D | -8.86964e-015 |
| E | 0.00000e+000 |
| F | 0.00000e+000 |
| G | 0.00000e+000 |
| H | 0.00000e+000 |
| J | 0.00000e+000 |
Edge thickness of the center thickness of the eyepiece more than the eyepiece；The thickness of the eyepiece from center to edge according to
It is secondary to be incremented by；
The center thickness of the eyepiece is 12mm-20mm, and the edge thickness of the eyepiece is 1mm-9mm.
Used as a kind of preferred scheme, the center thickness of the eyepiece is 16mm, and the edge thickness of the eyepiece is 5mm.Just
In injection molding.
Brief description of the drawings
Fig. 1 is part-structure schematic diagram of the invention；
Fig. 2 is a kind of structural representation of eyepiece of the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Accompanying drawing is closed, the present invention is expanded on further.
Referring to Fig. 1, Fig. 2, a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward, an including helmet is aobvious
Show device main body, Helmet Mounted Display main body includes a housing, a travel mechanism is provided with housing, and travel mechanism is provided with aobvious including one
The platen bracket of display screen, platen bracket is provided with a circular gear 1；The drive mechanism of the rolling of a driving circular gear 1 is additionally provided with housing,
Drive mechanism includes the first spur rack 3, and the first spur rack 3 is slidably connected with the first slide rail, and the first spur rack 3 and circular gear
1 engagement connection, the channeling direction of the first slide rail is fore-and-aft direction；One is additionally provided with housing for the second of the rolling of circular gear 1
Track, the second track is provided with the second spur rack 4, and the second spur rack 4 is connected with the engagement of circular gear 1；First slide rail and second
The channeling direction of track is parallel.By conventional fixed-type platen bracket, it is movable type to improve to the present invention, before being easy to carry out display screen
After move, the stop gone up at an arbitrary position of realization, for improving visual experience when human body is viewed and admired.When using the present invention, the
Two spur racks 4 are fixed in frame and remain stationary, the first spur rack 3 can be it is movable, the first spur rack 3 it is flat
Shifting can drive circular gear 1 to be rolled, so as to realize moving forward and backward for platen bracket.
First spur rack is located at the left side of circular gear, and the second spur rack is located at the right side of circular gear, circular gear
Centerline direction is vertical direction.Or, the first spur rack is located at the right side of circular gear, and the second spur rack is located at circular gear
Left side, the centerline direction of circular gear is vertical direction.
Drive mechanism includes adjusting key, and adjusting key is located on the outer wall of housing, and adjusting key connects the first spur rack 3.This hair
It is bright by adjusting key be easy to adjust the first spur rack 3 motion state.
Adjusting key connects a connecting rod, and adjusting key connects the first spur rack 3 by connecting rod；Offered on the outer wall of housing
One chute, the width of connecting rod matches with the width of chute, the channeling direction of the length direction of chute parallel to the first slide rail.
It is easy to regulation manually.
Adjusting key connects a control system, and control system connects the first motor, and the first motor connects a transmission mechanism,
Transmission mechanism connects the first spur rack 3.So as to realize motorized adjustment.
The left side of first spur rack 3 is fixed with a spring 5, and the elastic direction of spring 5 is horizontal direction.The present invention passes through spring
5 are in engagement keeping the second spur rack 4 all the time with circular gear 1.
The left side of spring 5 is fixedly connected a boss 6, and the inwall of housing is provided with one for the 3rd slide rail that boss 6 is moved, the
Channeling direction of the channeling direction of three slide rails parallel to the first slide rail.Boss 6 is allowed to be pressed on shell all the time in the presence of the power of spring 5
On body, the stop that circular gear 1 is gone up at an arbitrary position is realized by the friction of the slide rail of boss 6 and the 3rd.
Boss 6 is connected with a retaining mechanism.The present invention by being provided with a retaining mechanism, so as to adjust the first straight-tooth accordingly
Bar 3 and mirror holder outline engagement.So as to realize self-locking, anti-rolling.
An elongated slot to make way is offered on the outer wall of housing.It is easy to implement self-locking.First slide rail is fixedly connected with the casing,
The lower section of first spur rack 3 is provided with one and first roller that matches of slide rail.The present invention by roller in the first slide rail so as to
Realize being slidably connected for the first spur rack 3 and housing.
Used as a kind of preferred scheme, platen bracket includes a vertical support bar, the center of circular gear offer one with
The consistent through hole of support bar external diameter, support bar passes through through hole；At least two rollers are provided with below platen bracket, be provided with housing to
Few two chute groups being parallel to each other, chute group matches with roller；The channeling direction of chute group draws parallel to the first slide rail
Lead direction.The anterior-posterior translation moved forward and backward so as to driving display screen that the present invention passes through circular gear 1.
Used as another preferred scheme, circular gear 1 is fixedly connected a display screen, the center line and circular gear of display screen
1 centerline is on same vertical line；Be provided with a rotating disk between display screen and circular gear 1, rotating disk include a fixture,
One revolving part, fixture is fixedly connected circular gear 1, and revolving part is fixedly connected display screen, and revolving part includes a rotating shaft, rotating shaft
The centerline of center line and circular gear 1 is in same vertical line；Circular gear 1 is provided with a displacement transducer, displacement transducer
It is a wireless displacement sensor, a wireless communication module is provided with displacement transducer, displacement transducer passes through wireless communication module
Wireless telecommunications connect a microprocessor system, and microprocessor system connection one wirelessly connects with what wireless communication module matched
Receive module；Microprocessor system connects one second motor, and the second motor passes through a drive disk assembly connection rotating shaft.The present invention
After displacement transducer detects the anglec of rotation of circular gear 1, the second motor is controlled to revolve by microprocessor system
Turn corresponding angle, so as to realize that display screen carries out the rotation of the reverse anglec of rotation relative to circular gear 1, so as to realize leading to
Cross the anterior-posterior translation moved forward and backward so as to driving display screen of circular gear 1.
The anglec of rotation of circular gear 1 is equal to the anglec of rotation of display screen, and the direction of rotation of circular gear 1 is different from aobvious
The anglec of rotation of display screen.
Second track is provided with two baffle plates being parallel to each other, respectively first baffle, second baffle, and first baffle is flat
Row is located at the top of second baffle in horizontal plane, first baffle.First baffle is equal to circular gear with the spacing of second baffle
Thickness；Ceramic layer is coated with the lower surface of first baffle and the upper surface of second baffle.Play anti-rust action.Additionally, logical
Cross ceramic layer realize circular gear roll during, reduce with first baffle, the frictional force of second baffle.
An eyepiece is provided with front of the display surface of display screen, the front end face of eyepiece is first surface 11, the court of first surface 11
To the display surface of display screen, the rear end face of eyepiece is the second curved surface 12, and the second curved surface 12 is towards emergent pupil face；The center of first surface 11
In outer gibbosity, the edge of first surface 11 is in inner concavity, and the second curved surface 12 is in outer gibbosity.The goggle structure that the present invention is used is used for
Virtual reality device shows, the goggle structure of traditional double evagination is optimized, on the premise of 2k resolution ratio, in specific space model
In enclosing, it is capable of achieving distortion factor and is less than 10%, aberration is small, 120 degree of the angle of visual field, and magnifying power is suitable, small extent of the error on y directions
The interior optical lens that can obtain preferable image quality.
First surface 11 is one aspherical, the asphericity coefficient of first surface 11
Wherein,
| R | 20.90 |
| K | -0.514965 |
| A | -8.16235e-006 |
| B | -5.64210e-009 |
| C | -2.34590e-011 |
| D | -5.84926e-014 |
| E | 0.00000e+000 |
| F | 0.00000e+000 |
| G | 0.00000e+000 |
| H | 0.00000e+000 |
| J | 0.00000e+000 |
Second curved surface 12 is one aspherical, the asphericity coefficient of the second curved surface 12
Wherein,
| R | 324.5 |
| K | 0.066702 |
| A | -1.18590e-005 |
| B | 5.23218e-009 |
| C | -1.27637e-011 |
| D | -8.86964e-015 |
| E | 0.00000e+000 |
| F | 0.00000e+000 |
| G | 0.00000e+000 |
| H | 0.00000e+000 |
| J | 0.00000e+000 |
Edge thickness of the center thickness of eyepiece more than eyepiece；The thickness of eyepiece is incremented by successively to edge from center；Eyepiece
Center thickness be 12mm-20mm, the edge thickness of eyepiece is 1mm-9mm.
Used as a kind of preferred scheme, the center thickness of eyepiece is 16mm, and the edge thickness of eyepiece is 5mm.It is easy to injection to add
Work.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the simply explanation described in above-described embodiment and specification
Principle of the invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and
Its equivalent thereof.
Claims (8)
1. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward, an including Helmet Mounted Display main body, it is described
Helmet Mounted Display main body includes a housing, it is characterised in that a travel mechanism is provided with the housing, the travel mechanism includes
One platen bracket for being provided with display screen, the platen bracket is provided with a circular gear；
The drive mechanism that the driving circular gear is rolled is additionally provided with the housing, the drive mechanism includes the first straight-tooth
Bar, first spur rack is slidably connected with the first slide rail, and first spur rack is connected with circular gear engagement, institute
The channeling direction for stating the first slide rail is fore-and-aft direction；
One is additionally provided with the housing for the second track that the circular gear is rolled, it is straight that second track is provided with second
Tooth bar, second spur rack is connected with circular gear engagement；
First slide rail is parallel with the channeling direction of second track；
The platen bracket includes a vertical support bar, and the center of the circular gear offers one with the support bar external diameter
Consistent through hole, the support bar passes through the through hole；
At least two rollers are provided with below the platen bracket, at least two chute groups being parallel to each other are provided with the housing,
The chute group matches with the roller；
Channeling direction of the channeling direction of the chute group parallel to first slide rail.
2. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 1, its feature
It is：The drive mechanism includes adjusting key, and the adjusting key is located on the outer wall of the housing, and the adjusting key connection is described
First spur rack.
3. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 2, its feature
It is：The adjusting key connects a connecting rod, and the adjusting key connects first spur rack by the connecting rod；
A chute is offered on the outer wall of the housing, the width of the connecting rod matches with the width of the chute, described
Channeling direction of the length direction of chute parallel to first slide rail.
4. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 2, its feature
It is：The adjusting key connects a control system, and the control system connects the first motor, the first motor connection one
Transmission mechanism, the transmission mechanism connects first spur rack.
5. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 1, its feature
It is：The first spur rack left side is fixed with a spring, and the elastic direction of the spring is horizontal direction；
A boss is fixedly connected on the left of the spring, the inwall of the housing is provided with one is used for the 3rd cunning of boss movement
Rail, the channeling direction of the channeling direction of the 3rd slide rail parallel to first slide rail.
6. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 5, its feature
It is：An elongated slot to make way is offered on the outer wall of the housing.
7. a kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 1, its feature
It is：An eyepiece is provided with front of the display surface of the display screen, the front end face of the eyepiece is first surface, and described first is bent
Facing to the display surface of the display screen, the rear end face of the eyepiece is the second curved surface, and second curved surface is towards emergent pupil face；
The first surface center is in outer gibbosity, and the edge of the first surface is in inner concavity, and second curved surface is in outer gibbosity.
8. a kind of helmet for being provided with the travel mechanism that platen bracket is moved forward and backward according to claim 7 shows
Device, it is characterised in that：The first surface is one aspherical, the asphericity coefficient of the first surface
Wherein,
Second curved surface is one aspherical, the asphericity coefficient of second curved surface
Wherein,
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|---|---|---|---|
| CN201510141292.5A CN104898277B (en) | 2015-03-27 | 2015-03-27 | A kind of Helmet Mounted Display for being provided with the travel mechanism that platen bracket is moved forward and backward |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105403994B (en) * | 2016-01-05 | 2017-12-12 | 江苏弘汉生物科技有限公司 | A kind of reader with sliding reading glass |
| CN113614611B (en) | 2019-05-07 | 2023-09-15 | 苹果公司 | Adjusting mechanism of head-mounted display |
| CN111044258B (en) * | 2019-11-28 | 2021-09-28 | 扬州莱达光电技术有限公司 | Simulation testing device in helmet of helmet display |
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| EP0551781B1 (en) * | 1991-12-27 | 1997-03-05 | Sony Corporation | Goggle type image display apparatus |
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| CN104898277A (en) | 2015-09-09 |
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