CN107065419B - A kind of electronic any no-load voltage ratio projection screen - Google Patents
A kind of electronic any no-load voltage ratio projection screen Download PDFInfo
- Publication number
- CN107065419B CN107065419B CN201710340853.3A CN201710340853A CN107065419B CN 107065419 B CN107065419 B CN 107065419B CN 201710340853 A CN201710340853 A CN 201710340853A CN 107065419 B CN107065419 B CN 107065419B
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- curtain
- hinge
- connecting rod
- screen
- scissors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Abstract
A kind of electronic any no-load voltage ratio projection screen, including including curtain, screen-rollong device, curtain switching mechanism, electric controller and bracket.Described curtain the upper end is fixed on the pull rod for pulling out curtain, and lower end is fixed on the spool of screen-rollong device.The screen-rollong device includes shell, its inner reel, tube shaped electric machine in spool.The curtain switching mechanism includes centered on the center hinge of center support from the scissors synchronous opening/closing device of upper and lower both direction synchronous expansion or receipts closing cloth, the positive parallel linkage and draw curtain gravity damping mechanism that are vertically opened and closed for curtain.The bracket includes: base plate, base plate is equipped with upright bar, rod end is equipped with hand-rocked lifter, and by being inserted into elevating lever in hand-rocked lifter upper inlet, elevating lever top is equipped with fixing seat, and fixing seat sets that there are two sleeves.The present invention can smoothly be opened and closed curtain with arbitrary proportion, adjust the height of curtain with can be convenient.
Description
Technical field:
The invention belongs to field of projection display, are especially a kind of electronic no-load voltage ratio projection screen of variable display scale.
Background technique:
Currently, the projection screen that cooperation projector uses, there is various display scales, such as 16: 9,4: 3,16: 10,2.35: 1
Deng, but be all only one fixed display scale, projection screen can only be adapted to for the picture for the various ratios that projector is launched
A kind of intrinsic ratio, other display scales can be then generated on curtain not using region i.e. black surround, and spectators, which can generate curtain, not to be had
There is full utilization, it appears that it is awkward, can be to the big heavy discount of stereoscopic effect when just looking at 3D film, this has seriously affected the viewing of people
Impression.
Summary of the invention:
In order to overcome the shortcomings of that existing projection screen is only able to display single ratio picture, the present invention provides a kind of electronic any
No-load voltage ratio projection screen, it can convert arbitrary proportion picture, automatically controlled can set and store several common ratios convenient for spectators' choosing
It selects, it can also be with electronic stepless transformation ratio until satisfaction；The electronic no-load voltage ratio projection screen is fixed on Liftable base, can be square
Just its height is adjusted.
The technical scheme is that a kind of electronic any no-load voltage ratio projection screen, including curtain 2, screen-rollong device 3, curtain are opened
Close mechanism, electric controller 6 and bracket.Described 2 the upper end of curtain is fixed on the pull rod 1 for pulling out curtain, and screen-rollong is fixed in lower end
On the spool of device 3.The screen-rollong device 3 includes tube shaped electric machine in shell 22, its inner reel, spool.The curtain opening/closing machine
The positive parallel linkage and draw curtain gravity damping mechanism that structure includes scissors synchronous opening/closing device 8, is vertically pulled open for curtain.
The scissors synchronous opening/closing device 8 is the scissors parallelogram linkage in the nearly figure of eight, two connecting rod of upper part
The hinge on top is connect with 11 hinge of upper bracket of pull rod 1, the hinge of two connecting rod bottom end of its underpart and is fixed on outside screen-rollong device 3
7 hinge of undersetting of shell connects, and the hinge at two cross link centers of middle part is connect with 15 hinge of center support；It is described just parallel
Link mechanism includes upper positive parallel linkage 9 and lower positive parallel linkage 16, the upper links of upper positive parallel linkage 9
Top and 11 hinge of upper bracket, upper part connecting rod bottom end and its underpart connecting rod top hinge coaxial with 10 left end of left redundant connecting rod,
Its underpart connecting rod bottom end and 15 hinge of center support, the hinge of 10 right end of left redundant connecting rod and 8 left upper portion of scissors synchronous opening/closing device
Chain is set as hinge connection, and two connecting rods up and down of upper positive parallel linkage 9 connect with 8 upper left-hand of scissors synchronous opening/closing device respectively
Bar, mid link upper left side part are parallel and isometric；The upper links top of positive parallel linkage 16 and center support 15 down
Hinge, upper part connecting rod bottom end and its underpart connecting rod top hinge coaxial with 17 right end of right redundant connecting rod, its underpart connecting rod bottom end
With 7 hinge of undersetting, 17 left end of right redundant connecting rod is set as hinge with the hinge of 8 lower right side of scissors synchronous opening/closing device and connect, under
Two connecting rods up and down of positive parallel linkage 16 respectively with mid link bottom right side section, the lower right of scissors synchronous opening/closing device 8
Side connecting rod is parallel and isometric；The draw curtain gravity damping mechanism, including be mounted on pull rod 1 gas spring 12, roller support it
Be equipped between the short supporting plate 26 of the high supporting plate 28 in inside and outside idler wheel 27, gas spring 12 13 top of cylinder rod installation idler wheel 29,
Around the drawstring 14 of the idler wheel 27 of the idler wheel 29 and roller support on 13 top of cylinder rod, 14 upper end of drawstring be fixed on roller support it
On high supporting plate 28, lower end is fixed on center support 15.
The bracket includes: base plate 21, base plate is equipped with hollow upright bar 20,20 top of upright bar is equipped with hand-rail type liter
Device 19 drops, and by being inserted into elevating lever 18 in 19 upper inlet of hand-rocked lifter, 18 top of elevating lever is equipped with fixing seat 25, fixing seat
25 are equipped with two sleeves in left and right, are used for set two bolts 24 at 15 rear portion of grafting center support.
The hand-rocked lifter 19 is worm gear mechanism.
The beneficial effect that the present invention is played is:
Equipped with scissors synchronous opening/closing device and center support hinge, will be synchronized open in this way in curtain open or close with scissors
Close centered on device center hinge, from upper and lower both direction synchronous expansion or closure curtain, and can any no-load voltage ratio control picture
Size.The present invention is additionally provided with positive parallel linkage simultaneously, vertical with the upright bar of bracket holding always to control pull rod 1,
It is vertical with the upright bar of bracket holding always to control screen-rollong device equipped with lower positive parallel linkage.The present invention is additionally provided with draw curtain
Gravity damping mechanism, to offset influence of the biggish gravity of screen-rollong device to the curtain service life.In addition branch is provided with shaking type lifting
Device facilitates the height for adjusting screen of dynamoelectric projection.
Detailed description of the invention:
Fig. 1 main view of the present invention (when curtain is opened)
Fig. 2 rearview of the present invention (when curtain is opened)
Fig. 3 right side view of the present invention (when curtain is opened)
Fig. 4 front view of the present invention (when curtain is rolled-up)
Fig. 5 partial enlarged view I of the present invention
Fig. 6 partial enlarged view II of the present invention
Fig. 7 center support rearview of the present invention
Fig. 8 center support side view of the present invention
The fixing seat front view of Fig. 9 bracket of the present invention
The fixing seat top view of Figure 10 bracket of the present invention
Specific embodiment:
The present invention is described further with reference to the accompanying drawings and examples.
In Fig. 1, Fig. 2, a kind of electronic any no-load voltage ratio projection screen, comprising: screen-rollong device 3, interior of shell are equipped with spool
With tube shaped electric machine, shell uses dark colored paint, preferably black；One end is rolled up by the spool of electric rolling proscenia 3, other end quilt
It is fixed on the curtain 2 of pull rod 1, curtain 2 can be made of a variety of materials, and the present embodiment is white glass, and 2 left and right edges of curtain are set
There are black bands 4, play limitation projected picture boundary, curtain 2 can be without bracing wire 5 or with bracing wire 5, and preferably band bracing wire 5 is drawn
Bar 1, is made of aluminium alloy, uses dark colored paint, preferably black.Scissors synchronous opening/closing device 8, two connecting rod top of upper part it
Hinge is connect with 11 hinge of upper bracket of pull rod 1, the hinge of two connecting rod bottom end of its underpart and is fixed under 3 shell of screen-rollong device
The hinge of the connection of 7 hinge of support, two cross link centers of middle part is connect with 15 hinge of center support, for controlling with center branch
Centered on the center hinge of seat 14, upper and lower two-part 2 synchronous expansion of curtain is closed with receipts, scissors synchronous opening/closing device 8 is metal
It is made, the present embodiment is aluminum alloy materials, and upper bracket 11, center support 15, undersetting 7 are made of metal, and the present embodiment is aluminium
Alloy.It include upper positive parallel linkage 9 and lower positive parallel linkage 16, upper positive parallel rod equipped with positive parallel linkage
The upper links top of mechanism 9 and 11 hinge of upper bracket, upper part connecting rod bottom end and its underpart connecting rod top and left redundant connecting rod
The coaxial hinge in 10 left ends, its underpart connecting rod bottom end and 15 hinge of center support, 10 right end of left redundant connecting rod and scissors synchronous opening/closing
The hinge of 8 left upper portion of device be set as hinge connection, upper positive parallel linkage 9 up and down two connecting rods respectively with scissors synchronous opening/closing
8 upper left-hand connecting rod of device, mid link upper left side part are parallel and isometric；The upper links top of positive parallel linkage 16 down
With 15 hinge of center support, upper part connecting rod bottom end and its underpart connecting rod top hinge coaxial with 17 right end of right redundant connecting rod,
Lower link bottom end and 7 hinge of undersetting, 17 left end of right redundant connecting rod and the hinge of 8 lower right side of scissors synchronous opening/closing device are set as
Hinge connection, the two connecting rods mid link lower right side with scissors synchronous opening/closing device 8 respectively up and down of lower positive parallel linkage 16
Partially, connecting rod is parallel and isometric on the right side of lower part；Pull rod 1, screen-rollong device 3 when positive parallel linkage is used to open or closes curtain
Always vertical with the upright bar of bracket holding to be in horizontality, upper positive parallel linkage 9 and lower positive parallel linkage 16
It is made of metal, the present embodiment is aluminium alloy.And draw curtain gravity damping mechanism, see Fig. 5 and Fig. 6, including be mounted on pull rod 1
Gas spring 12, gas spring 12 be free type gas spring；It is installed between the short supporting plate 26 of the high supporting plate 28 in the inside of roller support and outside
There are idler wheel 27, the idler wheel 29 of 13 top of the cylinder rod installation of gas spring 12, roller support, idler wheel 27, idler wheel 29 are made of metal,
The present embodiment is aluminum alloy materials；Around the drawstring 14 of the idler wheel 27 of the idler wheel 29 and roller support on 13 top of cylinder rod, drawstring
14 upper ends are fixed on the high supporting plate 28 of roller support, and lower end is fixed on center support 15, for passing through gas spring 12
Thrust offsets influence of the most of gravity of screen-rollong device 3 to 2 service life of curtain, and drawstring 14 can be nylon, carbon fiber, wire
Equal current materials are made, and the present embodiment is made of nylon.In view of that curtain 2 can be made to receive due to the volume of scissors synchronous opening/closing device 8
Screen-rollong device 3 might have some gaps with pull rod 1 when rising, so the front shell 22 of screen-rollong device 3 can suitably compare rear portion
The long point of shell, likewise, the front of pull rod 1 can be equipped with baffle 23, when curtain 2 can in this way be closed, curtain 2 in terms of front
It does not leak outside, sees Fig. 3.And bracket, see Fig. 2, Fig. 3, Fig. 7, Fig. 8, Fig. 9, Figure 10, comprising: on base plate 21, base plate
It is equipped with hand-rocked lifter 19 equipped with hollow upright bar 20,20 top of upright bar, hand-rocked lifter 19 is worm gear mechanism, by
Elevating lever 18 is inserted into 19 upper inlet of hand-rocked lifter, 18 top of elevating lever is equipped with fixing seat 25, and fixing seat 25 is equipped with a left side
Right two sleeves are used for set two bolts 24 at 15 rear portion of grafting center support, and bracket is made of metal.It further include automatically controlled
Device 6 opens ratio setting for storing corresponding curtain and controls the opening and closing of electronic any no-load voltage ratio projection screen.
In use, the hand-rocked lifter for first shaking bracket adjusts electronic any no-load voltage ratio projection screen to proper height, plug
Plug starts turning the tube shaped electric machine of screen-rollong device curtain is unfolded by the outside connected switch or remote controller of electric controller
Cloth, screen-rollong device can move down at this time, and due to the effect of contraction of scissors synchronous opening/closing device, pull rod can also synchronize curtain is upward
Pull-up, under the constraint of upper parallel linkage and lower parallel linkage, pull rod and screen-rollong device keep hanging down with bracket always
Directly, that is, it is in horizontality.Since the gravity of screen-rollong device is bigger, so curtain can be made by biggish pulling force, service life meeting
It is affected, so being equipped with draw curtain gravity damping mechanism, pull rod can be made mobile towards the direction of center support, with screen-rollong device
The direction migration for the separate center support that gravity generates is exactly the opposite, due to the constraint of scissors synchronous opening/closing device, can support
Disappear unwanted gravity part, and the gravity of very little is only stayed to be used for the expansion of curtain.When curtain is extended to corresponding ratio, press
Lower storage key by the cached location information in electric controller, can with incalculability limit the arbitrary proportional positions of storage, in this way
Next time, which presses outside connected switch or the respective keys of remote controler when opening, can be expanded to curtain suitable ratio, when not in use,
It presses and closes power button and screen-rollong device can will be made to rotate backward, so that curtain be packed up, screen-rollong device and pull rod be just at this time
It can be close together, to play the role of protecting curtain.
Claims (3)
1. a kind of electronic any no-load voltage ratio projection screen, including curtain (2), screen-rollong device (3), curtain switching mechanism, electric controller (6) and
Bracket, described curtain (2) the upper end are fixed on the pull rod (1) for pulling out curtain, and the spool of screen-rollong device (3) is fixed in lower end
On；The screen-rollong device (3) includes shell (22), its inner reel, tube shaped electric machine in spool；
It is characterized in that the curtain switching mechanism includes scissors synchronous opening/closing device (8), just connects in parallel for what curtain vertically pulled open
Linkage；The scissors synchronous opening/closing device (8) is nearly figure of eight scissors parallelogram linkage, two connecting rod top of upper part
The hinge at end is connect with upper bracket (11) hinge of pull rod (1), the hinge of two connecting rod bottom end of its underpart and is fixed on screen-rollong device
(3) undersetting (7) the hinge connection of shell, the hinge at two cross link centers of middle part are connect with center support (15) hinge；
The positive parallel linkage includes upper positive parallel linkage (9) He Xiazheng parallel linkage (16), upper positive parallel rod
The upper links top of mechanism (9) and upper bracket (11) hinge, upper part connecting rod bottom end and its underpart connecting rod top and left redundant
The coaxial hinge in connecting rod (10) left end, its underpart connecting rod bottom end and center support (15) hinge, left redundant connecting rod (10) right end with cut
The hinge of formula synchronous opening/closing device (8) left upper portion is set as hinge connection, the two connecting rods difference up and down of upper positive parallel linkage (9)
It is parallel and isometric with scissors synchronous opening/closing device (8) upper left-hand connecting rod, mid link upper left side part；Positive parallel linkage down
(16) upper bar top and center support (15) hinge, upper part connecting rod bottom end and its underpart connecting rod top and right redundant connecting rod
(17) the coaxial hinge of right end, its underpart connecting rod bottom end and undersetting (7) hinge, right redundant connecting rod (17) left end and scissors synchronize open
Close device (8) lower right side hinge be set as hinge connection, lower positive parallel linkage (16) up and down two connecting rods respectively with scissors
The mid link bottom right side section of synchronous opening/closing device (8), lower part right side connecting rod are parallel and isometric.
2. a kind of electronic any no-load voltage ratio projection screen further includes draw curtain gravity damping mechanism, the draw curtain according to claim 1
Gravity damping mechanism, it is short including the high supporting plate in inside (28) of gas spring (12), roller support being mounted on pull rod (1) and outside
Idler wheel (27) is installed between supporting plate (26), the idler wheel (29) that cylinder rod (13) top of gas spring (12) is installed, bypasses cylinder rod
(13) drawstring (14) of the idler wheel (27) of the idler wheel (29) and roller support on top, drawstring (14) upper end be fixed on roller support it
On high supporting plate (28), lower end is fixed on center support (15).
3. the electronic any no-load voltage ratio projection screen of one kind according to claim 1 or claim 2, characterized in that the bracket includes base plate
(21), base plate is equipped with hollow upright bar (20), upright bar (20) top is equipped with hand-rocked lifter (19), by shaking type lifting
Elevating lever (18) are inserted into device (19) upper inlet, elevating lever (18) top is equipped with fixing seat (25), and fixing seat (25) is equipped with a left side
Right two sleeves are used for set two bolts (24) at grafting center support (15) rear portion；The hand-rocked lifter (19)
For worm gear mechanism lifter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340853.3A CN107065419B (en) | 2017-05-04 | 2017-05-04 | A kind of electronic any no-load voltage ratio projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340853.3A CN107065419B (en) | 2017-05-04 | 2017-05-04 | A kind of electronic any no-load voltage ratio projection screen |
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| Publication Number | Publication Date |
|---|---|
| CN107065419A CN107065419A (en) | 2017-08-18 |
| CN107065419B true CN107065419B (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710340853.3A Active CN107065419B (en) | 2017-05-04 | 2017-05-04 | A kind of electronic any no-load voltage ratio projection screen |
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| CN (1) | CN107065419B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058725B (en) * | 2018-09-14 | 2021-07-09 | 武汉天马微电子有限公司 | Supporting assembly and display device |
| CN109525185A (en) * | 2018-12-24 | 2019-03-26 | 西南交通大学 | A kind of solar energy film spool |
| CN110007553A (en) * | 2019-04-01 | 2019-07-12 | 深圳市火乐科技发展有限公司 | A kind of curtain and optical projection system |
| CN113938728A (en) * | 2020-06-29 | 2022-01-14 | 海信视像科技股份有限公司 | Projection assembly correction method of display device and display device |
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| CN101865352A (en) * | 2009-04-14 | 2010-10-20 | 苏州璨宇光学有限公司 | Support structure of pull-down type projection screen |
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| CN205862094U (en) * | 2016-06-17 | 2017-01-04 | 天津中企易通科技发展有限公司 | Integral type projection cabinet |
| CN206773388U (en) * | 2017-05-04 | 2017-12-19 | 张钒 | A kind of electronic any no-load voltage ratio projection screen |
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2017
- 2017-05-04 CN CN201710340853.3A patent/CN107065419B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286901A (en) * | 2007-05-16 | 2008-11-27 | Kinki Education Center:Kk | Foldable screen |
| CN101865352A (en) * | 2009-04-14 | 2010-10-20 | 苏州璨宇光学有限公司 | Support structure of pull-down type projection screen |
| CN102455586A (en) * | 2010-10-22 | 2012-05-16 | 崔定楠 | Ground lifting projection screen |
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| CN206773388U (en) * | 2017-05-04 | 2017-12-19 | 张钒 | A kind of electronic any no-load voltage ratio projection screen |
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| Publication number | Publication date |
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| CN107065419A (en) | 2017-08-18 |
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