CN104977787B - Porjector adjusting device - Google Patents
Porjector adjusting device Download PDFInfo
- Publication number
- CN104977787B CN104977787B CN201410146134.4A CN201410146134A CN104977787B CN 104977787 B CN104977787 B CN 104977787B CN 201410146134 A CN201410146134 A CN 201410146134A CN 104977787 B CN104977787 B CN 104977787B
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- turning sleeve
- deflecting plate
- screw mandrel
- feed screw
- adjusting device
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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
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention relates to a kind of porjector adjusting device, it is characterized in that: include the first annular connection pedestal in order to be connected with suspender, it is hinged with the first annular pedestal that is connected and pedestal can be connected relative to the intermediate annular that first annular connection pedestal rotates in X-axis, and the regulation seat board that pedestal is hinged and can rotate in Y-axis relative to intermediate annular connection pedestal it is connected with intermediate annular, on described regulation seat board connect have can relative accommodation seat board rotate projector connecting plate, described projector connecting plate is connected to a pair relative bump on all sides of regulation seat board, the regulation and control that two projections relatively close up through thread transmission or separate, to drive projector connecting plate relative accommodation seat board to rotate.The regulation of each coordinate axes of the present invention has corresponding independent regulation screw mandrel, makes regulation system independent, and regulation efficiency is high.
Description
Technical field:
The present invention relates to a kind of porjector adjusting device for regulating projector projects orientation.
Background technology:
Projector is a kind of can be connected the corresponding video signal of broadcasting by the different same computers of interface, VCD, DVD, BD, game machine, DV etc. by the equipment on image or VIDEO PROJECTION to curtain.Projector is widely used in family, office, school and public place of entertainment, different according to working method, has CRT, and LCD, DLP etc. are dissimilar.
The convenience installed and used for projector; cantilever beam would generally be used to hang; between cantilever beam and projector equipment, need adjusting part projector equipment is carried out the regulation of triaxial coordinate; so that the projection picture on perspective plane meets the vision requirement of people; although having the adjusting means of some projectors at present; but those adjusting means structures are more complicated, the compactest; when regulating three coordinate axes (X, Y, Z axis), the regulation in each orientation can produce and interfere; needs are caused the most repeatedly to regulate; regulate inefficient, and structure is the compactest.
Summary of the invention:
It is an object of the invention to provide a kind of porjector adjusting device, this porjector adjusting device is not only simple in structure, reasonable in design, and is conducive to conveniently realizing the regulation of projector coordinates axle.
Porjector adjusting device of the present invention, it is characterized in that: include the first annular connection pedestal in order to be connected with suspender, it is hinged with the first annular pedestal that is connected and pedestal can be connected relative to the intermediate annular that first annular connection pedestal rotates in X-axis, and the regulation seat board that pedestal is hinged and can rotate in Y-axis relative to intermediate annular connection pedestal it is connected with intermediate annular, on described regulation seat board connect have can relative accommodation seat board rotate projector connecting plate, described projector connecting plate is connected to a pair relative bump on all sides of regulation seat board, the regulation and control that two projections relatively close up through thread transmission or separate, to drive projector connecting plate relative accommodation seat board to rotate.
Above-mentioned first annular connection pedestal is the 3rd turning sleeve, intermediate annular connects pedestal and is the second turning sleeve, regulation seat board is the first turning sleeve and the first deflecting plate being fixedly connected into one, projector connecting plate is the second deflecting plate, and two projections are the 3rd feed screw nut pair with thread transmission composition；
First turning sleeve, the second turning sleeve and the 3rd turning sleeve from-inner-to-outer are socketed the upper turning sleeve of formation successively, and middle part is respectively provided with the first deflecting plate and the second deflecting plate lower deflecting plate of stacked formation up and down of convex platform；
Above-mentioned second turning sleeve and the 3rd turning sleeve are hinged by being arranged on first swivel pin of they bottoms, the convex platform of described first deflecting plate and the convex platform of the second deflecting plate are nested with between the first turning sleeve and the second turning sleeve bottom, and first turning sleeve and the second turning sleeve be hinged by being located at second swivel pin of they bottoms, described first turning sleeve bottom and the first deflecting plate convex platform are fixing to be connected, and described second deflecting plate convex platform is positioned at and wears the position of the second swivel pin and be provided with escape groove；It is provided with the first feed screw nut pair between described second turning sleeve top and the 3rd turning sleeve top, to drive the second turning sleeve to rotate around the first swivel pin when rotating the first screw mandrel of the first feed screw nut pair, it is provided with the second feed screw nut pair between described first turning sleeve top and the second turning sleeve top, to drive the first turning sleeve to rotate around the second swivel pin when rotating the second screw mandrel of the second feed screw nut pair, it is provided with the 3rd feed screw nut pair between described first deflecting plate and the second deflecting plate, to drive the second deflecting plate to rotate around convex platform axial line when rotating three screw mandrel of the 3rd feed screw nut pair.
Above-mentioned first swivel pin axial line X, the second swivel pin axial line Y Z-shaped with convex platform axial line become three axes be mutually perpendicular to common hand over formed an initial point.
Above-mentioned first feed screw nut pair includes that fixing the first nut being located at the second turning sleeve upper grooves intracavity and the first nut thread connect and stretch out the first screw mandrel that the 3rd turning sleeve is external, and is located on the 3rd turning sleeve the first fastener moved axially for spacing first screw mandrel.
Above-mentioned second feed screw nut pair includes fixing being located at the second nut in the first turning sleeve upper chamber and the second nut thread connects and stretches out the second screw mandrel that the 3rd turning sleeve is external, and is located on the second turning sleeve the second fastener moved axially for spacing second screw mandrel.
Above-mentioned 3rd feed screw nut pair includes the second lug protruding upward the first lug of the second deflecting plate perforation from the first deflecting plate upper surface, the second deflecting plate perforation side is provided with, and the 3rd screw mandrel being connected with two lugs respectively, described 3rd screw mandrel end is connected by latch is fixing with the second lug, being fixed with plastic nut on first lug, the 3rd screw mandrel is threadeded with this plastic nut.
Several concentric arcs perforated slots it are evenly equipped with on above-mentioned second deflecting plate, described first deflecting plate is provided with the location protruding pin stretched in those perforated slots, location protruding pin has been locked screw, the head of screw of described screw more than perforated slot to prevent the first deflecting plate and the second deflecting plate from separating.
Above-mentioned 3rd turning sleeve is fixed on suspender cantilever beam.
It is provided with separation sleeve between above-mentioned first deflecting plate and the second deflecting plate.
Above-mentioned first feed screw nut pair, the second feed screw nut pair, the screw mandrel of the 3rd feed screw nut pair are metal screw mandrel, and its nut is plastic nut, and metal screw mandrel is that zero clearance coordinates with plastic nut.
The working mechanism of porjector adjusting device of the present invention: by rotating the first screw mandrel, first screw mandrel drives the second turning set to rotate around the first bearing pin, owing to the convex platform of the first deflecting plate being mutually nested with and the convex platform of the second deflecting plate are nested with between the first turning sleeve and the second turning sleeve bottom, and first turning sleeve and the second turning sleeve be hinged by being located at second swivel pin of they bottoms, in the axial line of the first bearing pin and the second swivel pin is generally aligned in the same plane, and dislocation 90 degree, thus the second deflecting plate (and fixing the connecting plate being connected with projector and the second deflecting plate) also rotates around the first bearing pin with the second turning sleeve, realization can be around the rotation of X-coordinate axle；By rotating the second screw mandrel, second screw mandrel drives the first turning set to rotate around the second bearing pin, the convex platform of the first deflecting plate being mutually nested with and the convex platform of the second deflecting plate are nested with between the first turning sleeve and the second turning sleeve bottom, first turning sleeve bottom is fixing with the first deflecting plate convex platform to be connected, thus second deflecting plate superposed with the first deflecting plate (and fixing the connecting plate being connected with projector and the second deflecting plate) also rotates around the second bearing pin with the first turning sleeve, it is achieved can be around the rotation of Y coordinate axle；By rotating the 3rd screw mandrel, the 3rd screw mandrel drives the second deflecting plate to rotate around convex platform axial line, thus fixes the connecting plate being connected with projector and the second deflecting plate and also rotate with convex platform axial line, it is achieved can be around the rotation of Z coordinate axle.
The regulation of each coordinate axes of the present invention has corresponding independent regulation screw mandrel, makes regulation system independent, does not interfere with each other, and regulation efficiency is high.
Below in conjunction with the accompanying drawings the present invention is specifically described.
Accompanying drawing explanation
:
Fig. 1 is the D structure figure of porjector adjusting device of the present invention；
Fig. 2 is the top view of porjector adjusting device of the present invention；
Fig. 3 is the A-A profile of Fig. 2；
Fig. 4 is the B-B profile of Fig. 2；
Fig. 5 is the use state reference map of porjector adjusting device of the present invention.
Detailed description of the invention:
Porjector adjusting device of the present invention, including the first annular connection pedestal K3 in order to be connected with suspender 16, it is hinged with the first annular pedestal K3 that is connected and pedestal K2 can be connected relative to the intermediate annular that first annular connection pedestal rotates in X-axis, and the regulation seat board K1 that pedestal K2 is hinged and can rotate in Y-axis relative to intermediate annular connection pedestal it is connected with intermediate annular, on described regulation seat board connect have can relative accommodation seat board K1 rotate projector connecting plate K6, described projector connecting plate K6 is connected to a pair relative bump K11 on all sides of regulation seat board, K12, two projection K11, the regulation and control that K12 relatively closes up through thread transmission K10 or separates, to drive projector connecting plate K6 relative accommodation seat board K1 to rotate.
Above-mentioned first annular connection pedestal K3 is the 3rd turning sleeve 3, intermediate annular connects pedestal K2 and is the second turning sleeve 2, regulation seat board K1 is the first turning sleeve 1 and the first deflecting plate 5 being fixedly connected into one, projector connecting plate K6 is the second deflecting plate 6, and two projection K11, K12 and thread transmission K10 composition is the 3rd feed screw nut pair 10；
Wherein first turning sleeve the 1, second turning sleeve 2 and the 3rd turning sleeve 3 from-inner-to-outer are socketed the upper turning sleeve m of formation successively, and middle part is respectively provided with the first deflecting plate and the second deflecting plate lower deflecting plate n of stacked formation up and down of convex platform；
nullDescribed second turning sleeve 2 and the 3rd turning sleeve 3 are hinged by being arranged on first swivel pin 4 of they bottoms，Described lower deflecting plate n includes that the middle part being stacked up and down is respectively provided with the first deflecting plate 5 and the second deflecting plate 6 of convex platform，The convex platform 501 of described first deflecting plate 5 and the convex platform 601 of the second deflecting plate 6 are nested with between the first turning sleeve 1 and the second turning sleeve 2 bottom，And first turning sleeve 1 be hinged by being located at second swivel pin 7 of they bottoms with the second turning sleeve 2，Described first turning sleeve 1 bottom is fixing with the first deflecting plate 5 convex platform 501 to be connected，First turning sleeve 1 bottom and the first deflecting plate 5 convex platform 501 socket-connect and are interspersed with the second swivel pin 7 to realize the fixing of them，Described second deflecting plate 6 convex platform 601 is positioned at and wears the position of the second swivel pin 7 and be provided with escape groove，This escape groove the beneficially second deflecting plate 6 is dodging the second swivel pin 7 when the first deflecting plate 5 rotates；It is provided with the first feed screw nut pair 8 between described second turning sleeve 2 top and the 3rd turning sleeve 3 top, to drive the second turning sleeve 2 to rotate around the first swivel pin 4 when rotating the first screw mandrel 801 of the first feed screw nut pair, it is provided with the second feed screw nut pair 9 between described first turning sleeve 1 top and the second turning sleeve 2 top, to drive the first turning sleeve 1 to rotate around the second swivel pin 7 when rotating the second screw mandrel 901 of the second feed screw nut pair, it is provided with the 3rd feed screw nut pair 10 between described first deflecting plate 5 and the second deflecting plate 6, to drive the second deflecting plate 6 to rotate around convex platform axial line when rotating three screw mandrel 1001 of the 3rd feed screw nut pair.
Described convex platform 601 is actually and is located at the second supermedial ring segment of deflecting plate, and escape groove i.e. has breach 18 on this ring segment, and this breach has two, is for realizing wearing of the second swivel pin.
Above-mentioned first swivel pin 4 axial line X, second swivel pin 7 axial line Y Z-shaped with convex platform axial line become three axes be mutually perpendicular to common hand over formed an initial point O, first swivel pin 4 axial line X, second swivel pin 7 axial line Y is generally aligned in the same plane interior and mutual dislocation 90 degree, the present invention passes through the first swivel pin axial line X, second swivel pin axial line Y Z-shaped with convex platform axial line become three axes be mutually perpendicular to common hand over formed an initial point O, make the projector of installation X Y regulation on Z tri-axle smooth and easy, the structure vertical relative to conventional independent two axles or three axles are vertical but disjoint structure, not only structure is compacter, and regulate smooth and easy, not clamping stagnation.
In order to reasonable in design, above-mentioned first feed screw nut pair 8 includes that fixing the first nut 802 being located at the second turning sleeve upper grooves intracavity is connected and stretches out the first screw mandrel 801 that the 3rd turning sleeve is external with the first nut thread, and is located on the 3rd turning sleeve the first fastener 803 moved axially for spacing first screw mandrel.Being provided with on the 3rd turning sleeve and dodge the duct 19 that the first screw mandrel 801 passes, the first nut 802 is plastic nut, and the first screw mandrel 801 is made of metal, and they use zero clearance to coordinate, so that not producing play during regulation, it is achieved the accuracy of projector fine setting.
In order to reasonable in design, above-mentioned second feed screw nut pair 9 includes that fixing the second nut 902 being located in the first turning sleeve upper chamber is connected with the second nut thread and stretches out the second screw mandrel 901 that the 3rd turning sleeve is external,, and it is located on the second turning sleeve the second fastener 903 moved axially for spacing second screw mandrel.Second nut 902 is plastic nut, and the second screw mandrel 901 is made of metal, and they use zero clearance to coordinate, so that not producing play during regulation, it is achieved the accuracy of projector fine setting.
In order to reasonable in design, above-mentioned 3rd feed screw nut pair 10 includes the first lug 11 protruding upward the second deflecting plate perforation from the first deflecting plate upper surface, the second lug 12 that second deflecting plate perforation side is provided with, and the 3rd screw mandrel 1001 being connected with two lugs respectively, 3rd screw mandrel 1001 is made of metal, described 3rd screw mandrel 1001 end is connected by latch is fixing with the second lug 12, it is fixed with plastic nut on first lug 11, 3rd screw mandrel 1001 is threadeded with this plastic nut, and use zero clearance to coordinate, so that not producing play during regulation, realize the accuracy of projector fine setting.
For positioning stablity, it is evenly equipped with several concentric arcs perforated slots 13 on above-mentioned second deflecting plate 6, described first deflecting plate 5 is provided with the location protruding pin 14 stretched in those perforated slots, location protruding pin has been locked screw, the head of screw of described screw more than perforated slot to prevent the first deflecting plate and the second deflecting plate from separating.
Connecting for convenience, connecting below above-mentioned second deflecting plate has the connecting plate 15 for fixing projector.
In order to regulate projector distance, above-mentioned 3rd turning sleeve 3 is fixed on cantilever beam 16.
Rub to rotate smooth and easy minimizing, and reduce the requirement to workpiece craft precision, between above-mentioned first deflecting plate 5 and the second deflecting plate 6, be provided with separation sleeve 17.The shape of separation sleeve and the first deflecting plate 5 are basically identical with the contact surface of the second deflecting plate 6, the most i.e. advantageously reduce the first deflecting plate 5 and requirement of the second deflecting plate 6 craft precision as stamping parts.
The working mechanism of porjector adjusting device of the present invention: by rotating the first screw mandrel 801, first screw mandrel 801 drives the second turning set 2 to rotate around the first bearing pin 4, owing to the convex platform 501 of the first deflecting plate 5 being mutually nested with and the convex platform 601 of the second deflecting plate 6 are nested with between the first turning sleeve 1 and the second turning sleeve 2 bottom, and first turning sleeve 1 be hinged by being located at second swivel pin 7 of they bottoms with the second turning sleeve 2, in the axial line of the first bearing pin 4 and the second swivel pin 7 is generally aligned in the same plane, and dislocation 90 degree, thus the second deflecting plate 6(and fix, with projector and the second deflecting plate, the connecting plate 15 being connected) also rotate around the first bearing pin 4 with the second turning sleeve 2, realization can be around the rotation of X-coordinate axle；By rotating the second screw mandrel 901, second screw mandrel 901 drives the first turning set 1 to rotate around the second bearing pin 7, the convex platform 501 of the first deflecting plate 5 being mutually nested with and the convex platform 601 of the second deflecting plate 6 are nested with between the first turning sleeve 1 and the second turning sleeve 2 bottom, first turning sleeve 1 bottom is fixing with the first deflecting plate 5 convex platform 501 to be connected, thus the second deflecting plate 6(superposed with the first deflecting plate 5 and fix, with projector and the second deflecting plate, the connecting plate 15 being connected) also rotate around the second bearing pin 7 with the first turning sleeve 1, it is achieved can be around the rotation of Y coordinate axle；By rotating the 3rd screw mandrel 1001, the 3rd screw mandrel drives the second deflecting plate 6 to rotate around convex platform axial line, thus fixes the connecting plate being connected with projector and the second deflecting plate and also rotate with convex platform axial line, it is achieved can be around the rotation of Z coordinate axle.
The regulation of each coordinate axes of the present invention has corresponding independent regulation screw mandrel, makes regulation system independent, does not interfere with each other, and regulation efficiency is high.
The foregoing is only embodiments of the invention, all impartial changes done according to scope of the present invention patent or modification, all should belong to the covering scope of the present invention.
Claims (9)
1. a porjector adjusting device, it is characterized in that: include the first annular connection pedestal in order to be connected with suspender, it is hinged with the first annular pedestal that is connected and pedestal can be connected relative to the intermediate annular that first annular connection pedestal rotates in X-axis, and the regulation seat board that pedestal is hinged and can rotate in Y-axis relative to intermediate annular connection pedestal it is connected with intermediate annular, on described regulation seat board connect have can relative accommodation seat board rotate projector connecting plate, described projector connecting plate is connected to a pair relative bump on all sides of regulation seat board, the regulation and control that two projections relatively close up through thread transmission or separate, to drive projector connecting plate relative accommodation seat board to rotate；
Described first annular connection pedestal is the 3rd turning sleeve, intermediate annular connects pedestal and is the second turning sleeve, regulation seat board is the first turning sleeve and the first deflecting plate being fixedly connected into one, projector connecting plate is the second deflecting plate, and two projections are the 3rd feed screw nut pair with thread transmission composition；
First turning sleeve, the second turning sleeve and the 3rd turning sleeve from-inner-to-outer are socketed the upper turning sleeve of formation successively, and middle part is respectively provided with the first deflecting plate and the second deflecting plate lower deflecting plate of stacked formation up and down of convex platform；
Described second turning sleeve and the 3rd turning sleeve are hinged by being arranged on first swivel pin of they bottoms, the convex platform of described first deflecting plate and the convex platform of the second deflecting plate are nested with between the first turning sleeve and the second turning sleeve bottom, and first turning sleeve and the second turning sleeve be hinged by being located at second swivel pin of they bottoms, described first turning sleeve bottom and the first deflecting plate convex platform are fixing to be connected, and described second deflecting plate convex platform is positioned at and wears the position of the second swivel pin and be provided with escape groove；It is provided with the first feed screw nut pair between described second turning sleeve top and the 3rd turning sleeve top, to drive the second turning sleeve to rotate around the first swivel pin when rotating the first screw mandrel of the first feed screw nut pair, it is provided with the second feed screw nut pair between described first turning sleeve top and the second turning sleeve top, to drive the first turning sleeve to rotate around the second swivel pin when rotating the second screw mandrel of the second feed screw nut pair, it is provided with the 3rd feed screw nut pair between described first deflecting plate and the second deflecting plate, to drive the second deflecting plate to rotate around convex platform axial line when rotating three screw mandrel of the 3rd feed screw nut pair.
Porjector adjusting device the most according to claim 1, it is characterised in that: described first swivel pin axial line X, the second swivel pin axial line Y Z-shaped with convex platform axial line become three axes be mutually perpendicular to common hand over formed an initial point.
Porjector adjusting device the most according to claim 1, it is characterized in that: described first feed screw nut pair includes that fixing the first nut being located at the second turning sleeve upper grooves intracavity and the first nut thread connect and stretch out the first screw mandrel that the 3rd turning sleeve is external, and is located on the 3rd turning sleeve the first fastener moved axially for spacing first screw mandrel.
Porjector adjusting device the most according to claim 1, it is characterized in that: described second feed screw nut pair includes fixing being located at the second nut in the first turning sleeve upper chamber and the second nut thread connects and stretches out the second screw mandrel that the 3rd turning sleeve is external, and is located on the second turning sleeve the second fastener moved axially for spacing second screw mandrel.
Porjector adjusting device the most according to claim 1, it is characterized in that: described 3rd feed screw nut pair includes the second lug protruding upward the first lug of the second deflecting plate perforation from the first deflecting plate upper surface, the second deflecting plate perforation side is provided with, and the 3rd screw mandrel being connected with two lugs respectively, described 3rd screw mandrel end is connected by latch is fixing with the second lug, being fixed with plastic nut on first lug, the 3rd screw mandrel is threadeded with this plastic nut.
6. according to the porjector adjusting device described in claim 1,2,3,4 or 5, it is characterized in that: on described second deflecting plate, be evenly equipped with several concentric arcs perforated slots, described first deflecting plate is provided with the location protruding pin stretched in those perforated slots, location protruding pin has been locked screw, the head of screw of described screw more than perforated slot to prevent the first deflecting plate and the second deflecting plate from separating.
Porjector adjusting device the most according to claim 1, it is characterised in that: described 3rd turning sleeve is fixed on suspender cantilever beam.
Porjector adjusting device the most according to claim 1, it is characterised in that: it is provided with separation sleeve between described first deflecting plate and the second deflecting plate.
Porjector adjusting device the most according to claim 1, it is characterized in that: described first feed screw nut pair, the second feed screw nut pair, the screw mandrel of the 3rd feed screw nut pair are metal screw mandrel, its nut is plastic nut, and metal screw mandrel is that zero clearance coordinates with plastic nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146134.4A CN104977787B (en) | 2014-04-14 | 2014-04-14 | Porjector adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146134.4A CN104977787B (en) | 2014-04-14 | 2014-04-14 | Porjector adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN104977787A CN104977787A (en) | 2015-10-14 |
| CN104977787B true CN104977787B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410146134.4A Active CN104977787B (en) | 2014-04-14 | 2014-04-14 | Porjector adjusting device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110608352A (en) * | 2019-09-19 | 2019-12-24 | 青岛海信激光显示股份有限公司 | Adjusting support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884260Y (en) * | 2006-03-13 | 2007-03-28 | 杨晓冬 | Regulating means for projecting apparatus |
| CN101226323A (en) * | 2007-01-19 | 2008-07-23 | 皮尔利斯工业有限公司 | Projector support |
| CN201583778U (en) * | 2010-02-12 | 2010-09-15 | 昆山新杨五金制品有限公司 | Projector hanger with improved structure |
| CN202110369U (en) * | 2011-06-02 | 2012-01-11 | 昆山泓杰电子有限公司 | Projector rack rotary head |
| CN202771149U (en) * | 2012-06-19 | 2013-03-06 | 芜湖雅图数字视频技术有限公司 | Bracket of reflective short focal projector |
-
2014
- 2014-04-14 CN CN201410146134.4A patent/CN104977787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884260Y (en) * | 2006-03-13 | 2007-03-28 | 杨晓冬 | Regulating means for projecting apparatus |
| CN101226323A (en) * | 2007-01-19 | 2008-07-23 | 皮尔利斯工业有限公司 | Projector support |
| CN201583778U (en) * | 2010-02-12 | 2010-09-15 | 昆山新杨五金制品有限公司 | Projector hanger with improved structure |
| CN202110369U (en) * | 2011-06-02 | 2012-01-11 | 昆山泓杰电子有限公司 | Projector rack rotary head |
| CN202771149U (en) * | 2012-06-19 | 2013-03-06 | 芜湖雅图数字视频技术有限公司 | Bracket of reflective short focal projector |
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