CN104360577A - Integral folding frame type framework projection screen - Google Patents
Integral folding frame type framework projection screen Download PDFInfo
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- CN104360577A CN104360577A CN201410736679.0A CN201410736679A CN104360577A CN 104360577 A CN104360577 A CN 104360577A CN 201410736679 A CN201410736679 A CN 201410736679A CN 104360577 A CN104360577 A CN 104360577A
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- framework
- frame
- long margin
- short
- projection screen
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses an integral folding frame type framework projection screen. The integral folding frame type framework projection screen comprises screen cloth and a scroll. The integral folding frame type framework projection screen is characterized by further comprising a framework which consists of two long side frames, four short side frames and six shaftless hinges, wherein the shaftless hinges which are internally arranged between the long side frames and the short side frames are fixedly connected to tube walls of the long side frames and the short side frames which are fixedly connected to the inside of the framework by virtue of a connecting rod of a shaftless hinge rotary plate; the shaftless hinges which are internally arranged between the two short side frames are fixedly connected on the tube walls of the two short side frames which are fixedly connected to the outside of the framework by virtue of the connecting rod of the shaftless hinge rotary plate; two groups of electromagnets are fixedly connected on the end heads of the short side frames respectively; supporting bases are fixedly connected on the back surface of the framework and the two ends of each long side frame respectively, at least one scroll is arranged between the supporting bases at the two ends of each long side frame and fixedly connected with the supporting bases; the screen cloth is arranged between the framework and the scroll; the two sides of the screen cloth are fixedly connected with the scroll which is fixedly connected on the long side frames or the long side frames respectively; and two groups of magnetic bars are respectively arranged at inner and outer sides of the screen cloth, between the short side frames of the framework and the screen cloth and fixedly connected.
Description
Technical field
The present invention relates to projection screen, is a kind of Integral foldable framework projection screen.
Background technology
Projection screen is used in instrument film, office, home theater and convention occasion being used for showing image, video file.Projection screen of a great variety, for handling official business, the projection screen of home theater and convention occasion with screen of dynamoelectric projection and framework projection screen in the majority.Advantages such as screen of dynamoelectric projection adopts spool rolling structure, and after having retracting, volume is little, retracting is convenient, curtain face is easily maintained, but because of four limit unbalance stress, use and easily occur the uneven and edge in V-type line, water ripples, curtain face directly and be difficult to the shortcomings such as reparation afterwards.Framework projection screen forms framework by section bar is fixing, framework is arranged spring carrier arm or pulling buckle, curtain is fixed on framework by spring carrier arm or pulling buckle, framework projection screen fixes curtain because adopting framework, there is four limit uniform force, good, the on-deformable advantage of flatness, but also have that area is more easy to store, curtain face easy dirty easily aging, with the shortcoming such as surrounding enviroment inaccurate coordination; Also have and adopt some parts to carry out assembling, mounting the structure of curtain framework projection screen, shortcoming is that the framework of assembling needs screw thread to be fixed and unsightly, curtain and framework split not portable.
Summary of the invention
Technical matters to be solved by this invention is: the shortcoming overcoming prior art, a kind of Integral foldable framework projection screen is provided, framework and curtain can be folded into minimum volume simultaneously, and framework and curtain are fixed with one, floor area is little, and the structure that framework and curtain are fixed with one is beneficial to carries and collect.
The scheme of technical solution problem of the present invention is: a kind of Integral foldable framework projection screen, it comprises curtain and spool, it is characterized in that: also comprise framework, described framework is made up of two long margin frames, four short frames and six pinless hinge, long margin frame and short frame are rectangular tube, two long margin frames and four short frames successively alternately symmetry arrangement form rectangular frame, six pinless hinge to be built in respectively between adjacent frame and to be connected; Electromagnet is connected in the termination, corresponding with pinless hinge of adjacent two short frames respectively; Be connected at the two ends of the back side of framework, long margin frame bearing respectively, and at least one spool to be placed between bearing that long margin frame two ends arrange and to be connected; Curtain is placed between framework and spool, and the both sides of curtain are connected with the spool be connected on long margin frame or long margin frame respectively, and two groups of magnetic stripes are placed in the other both sides of curtain respectively, be connected between the short frame of framework and curtain.
The structure of described pinless hinge is: it comprises body and rolling disc, described body is in the arc-shaped being less than 180 °, the convex side of body and the shutoff respectively of recessed side, several chambers are set in body, one end radial-plugging of N number of chamber, the other end radial-plugging of N+1 chamber, in the chamber of body, slide block is set, rolling disc is similar to shape, the convex side radial direction of one end arranges connecting link, rolling disc arranges the chute of arc, rolling disc is built in the chamber of body, link is positioned at the outside of body, be slidably connected in the chute that slide block is placed in rolling disc, be built in the pinless hinge between long margin frame and short frame to be fixed on respectively by the connecting link of pinless hinge rolling disc on the tube wall of long margin frame inside framework and short frame, be built in the pinless hinge between two short frames to be fixed on the tube wall of two short frames outside framework respectively by the connecting link of pinless hinge rolling disc.
The described built-in balancing weight of long margin frame being positioned at base of frame.
Described magnetic stripe is the magnetic patch that several are arranged successively.
The use procedure of Integral foldable framework projection screen of the present invention is: be folded state at ordinary times, when needing to open curtain, be connected in the spool release curtain on long margin frame bearing, the long margin frame being positioned at framework bottom surface under the Action of Gravity Field of deadweight and counterweight to bottom offset, folding short frame is that the point of rotation opens gradually with pinless hinge, until the short frame of left and right doubling is tending towards vertical, the now electromagnet energising that is connected of two short frame terminations is attracting, two short frames are made to launch to become vertical frame completely, the magnetic stripe be placed between framework and curtain is attracting, curtain and the complete laminating of framework, thus the frame-type projection screen that composition is overall.When packing up curtain, electromagnet is oppositely energized and repels each other, the short frame of left and right doubling separately, be connected in the spool retracting curtain on long margin frame bearing and drive the long margin frame being positioned at framework bottom surface to move up, to be that the point of rotation is folding gradually with pinless hinge pack up the short frame launched completely, until complete level, be in folded state.
The beneficial effect of Integral foldable framework projection screen of the present invention is: two hinged long margin frames, the framework of four short frames composition framework can be made to be folded to minimum area that area is a long margin frame length × tetra-short frame width, pinless hinge can when framework folds each frame side close contact, each frame end face close contact during expansion, make framework more attractive in appearance, spool is connected by bearing and framework and forms overall projection screen and be beneficial to and carry, magnetic stripe between framework and curtain makes curtain and the complete laminating of framework, curtain is avoided to occur V-type line, water ripples, the shortcomings such as uneven and edge, curtain face is not straight, after folding retracting, volume is little, four limit uniform force, flatness is good, not yielding, there is structure simple, retracting is convenient, curtain face is easily maintained, open the advantage of the stable fixed sturcture of rear formation completely.
Accompanying drawing explanation
Fig. 1 is the schematic front view of Integral foldable framework projection screen of the present invention;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 4 is the schematic front view of Integral foldable framework projection screen folded state of the present invention;
Fig. 5 is that schematic diagram is looked on a left side of Fig. 4;
Fig. 6 is the pinless hinge schematic front view of Integral foldable framework projection screen of the present invention;
Fig. 7 is that schematic diagram is looked on a left side of Fig. 6;
Fig. 8 is that the K of Fig. 6 is to schematic diagram;
Fig. 9 is the A-A cross-sectional schematic of Fig. 7;
Figure 10 is the B-B cross-sectional schematic of Fig. 7;
Figure 11 is the pinless hinge closure state schematic front view of Integral foldable framework projection screen of the present invention;
Figure 12 is that the pinless hinge of Integral foldable framework projection screen of the present invention opens 90 ° of state schematic front view.
In figure: 1 pinless hinge, 2 short frames, 3 long margin frames, 4 bearings, 5 magnetic stripes, 6 curtains, 7 spools, 8 connecting links, 9 rolling discs, 10 chutes, 11 bodies, 12 slide blocks.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 1 ~ Figure 12, a kind of Integral foldable framework of the present embodiment projection screen, it comprises spool 7, curtain 6 and framework, described framework is made up of two long margin frames, 3, four short frames 2 and six pinless hinge 1, long margin frame 3 and short frame 2 are rectangular tube, the length of two short frames 2 and be less than long margin frame 3, two long margin frames 3 and four short frames 2 successively alternately symmetry arrangement form rectangular frame, six pinless hinge 1 to be built in respectively between adjacent frame and to be connected; Two groups of electromagnet are connected in the termination, corresponding with pinless hinge 1 of short frame 2 respectively; At the back side of framework, the two ends of long margin frame 3 are connected bearing 4 respectively, and at least one spool 7 to be placed between bearing 4 that long margin frame 3 two ends arrange and to be connected; Curtain 6 is placed between framework and spool 7, and the both sides of curtain 6 are connected with the spool 7 be connected on long margin frame 3 or long margin frame 3 respectively, and two groups of magnetic stripes 5 are placed in the other both sides of curtain 6 respectively, be connected between the short frame 2 of framework and curtain 6.The structure of described pinless hinge 1 is: it comprises body 11 and rolling disc 9, described body 11 is in the arc-shaped being less than 180 °, the convex side of body 11 and the shutoff respectively of recessed side, several chambers are set in body 11, one end radial-plugging of N number of chamber, the other end radial-plugging of N+1 chamber, slide block 12 is set in the chamber of body 11, rolling disc 9 is similar to body 11 shape, the convex side radial direction of one end arranges connecting link 8, rolling disc 9 arranges the chute 10 of arc, rolling disc 9 is built in the chamber of body 11, link is positioned at the outside of body 11, be slidably connected in the chute 10 that slide block 12 is placed in rolling disc 9, be built in the pinless hinge 1 between long margin frame 3 and short frame 2 to be fixed on respectively by the connecting link 8 of pinless hinge 1 rolling disc 9 on the tube wall of long margin frame 3 inside framework and short frame 2, be built in the pinless hinge 1 between two short frames 2 to be fixed on the tube wall of two short frames 2 outside framework respectively by the connecting link 8 of pinless hinge 1 rolling disc 9.The described built-in balancing weight of long margin frame 3 being positioned at base of frame.Described magnetic stripe 5 is the magnetic patch that several are arranged successively.The present embodiment adopts prior art manufacture, and described spool 7 is the commercially available prod of prior art.
The use procedure of the present embodiment is: be folded state at ordinary times, when needing to open projection screen, the spool 7 be connected on long margin frame 3 bearing 4 discharges curtain 6, the long margin frame 3 being positioned at framework bottom surface under the Action of Gravity Field of deadweight and counterweight to bottom offset, folding short frame 2 opens for the point of rotation gradually with pinless hinge 1, until the short frame 2 of left and right doubling is tending towards vertical, the now electromagnet energising that is connected of two short frame 2 terminations is attracting, two short frames 2 are made to launch to become vertical frame completely, the magnetic stripe 5 be placed between framework and curtain 6 is attracting, curtain 6 and the complete laminating of framework, thus the frame-type projection screen that composition is overall.When needing to pack up projection screen, electromagnet is oppositely energized and repels each other, the short frame 2 of left and right doubling separately, the spool 7 be connected on long margin frame 3 bearing 4 furls curtain 6 and drives the long margin frame 3 being positioned at framework bottom surface to move up, the short frame 2 launched completely is packed up for the point of rotation is folding gradually with pinless hinge 1, until complete level, be in folded state.
Claims (4)
1. an Integral foldable framework projection screen, it comprises curtain and spool, it is characterized in that: also comprise framework, described framework is made up of two long margin frames, four short frames and six pinless hinge, long margin frame and short frame are rectangular tube, two long margin frames and four short frames successively alternately symmetry arrangement form rectangular frame, six pinless hinge to be built in respectively between adjacent frame and to be connected; Electromagnet is connected in the termination, corresponding with pinless hinge of adjacent two short frames respectively; Be connected at the two ends of the back side of framework, long margin frame bearing respectively, and at least one spool to be placed between bearing that long margin frame two ends arrange and to be connected; Curtain is placed between framework and spool, and the both sides of curtain are connected with the spool be connected on long margin frame or long margin frame respectively, and two groups of magnetic stripes are placed in the other both sides of curtain respectively, be connected between the short frame of framework and curtain.
2. Integral foldable framework projection screen as claimed in claim 1, it is characterized in that: the structure of described pinless hinge is: it comprises body and rolling disc, described body is in the arc-shaped being less than 180 °, the convex side of body and the shutoff respectively of recessed side, several chambers are set in body, one end radial-plugging of N number of chamber, the other end radial-plugging of N+1 chamber, in the chamber of body, slide block is set, rolling disc is similar to shape, the convex side radial direction of one end arranges connecting link, rolling disc arranges the chute of arc, rolling disc is built in the chamber of body, link is positioned at the outside of body, be slidably connected in the chute that slide block is placed in rolling disc, be built in the pinless hinge between long margin frame and short frame to be fixed on respectively by the connecting link of pinless hinge rolling disc on the tube wall of long margin frame inside framework and short frame, be built in the pinless hinge between two short frames to be fixed on the tube wall of two short frames outside framework respectively by the connecting link of pinless hinge rolling disc.
3. Integral foldable framework projection screen as claimed in claim 1, is characterized in that: described in be positioned at the built-in balancing weight of long margin frame of base of frame.
4. Integral foldable framework projection screen as claimed in claim 1, is characterized in that: described magnetic stripe is the magnetic patch that several are arranged successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736679.0A CN104360577B (en) | 2014-12-08 | 2014-12-08 | Integral foldable framework projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736679.0A CN104360577B (en) | 2014-12-08 | 2014-12-08 | Integral foldable framework projection screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104360577A true CN104360577A (en) | 2015-02-18 |
| CN104360577B CN104360577B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410736679.0A Active CN104360577B (en) | 2014-12-08 | 2014-12-08 | Integral foldable framework projection screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467740A (en) * | 2015-12-15 | 2016-04-06 | 重庆触视科技有限公司 | Bottom-up projection screen |
| WO2016091117A1 (en) * | 2014-12-08 | 2016-06-16 | 窦志刚 | Integrated foldable frame projection screen |
| CN114114822A (en) * | 2021-12-21 | 2022-03-01 | 得力集团有限公司 | Curtain working method and electric projection curtain |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829878A (en) * | 1994-07-12 | 1996-02-02 | Casio Comput Co Ltd | Foldable screen device |
| CN102455586A (en) * | 2010-10-22 | 2012-05-16 | 崔定楠 | Ground lifting projection screen |
| US20120162760A1 (en) * | 2010-12-23 | 2012-06-28 | Yin-Wen Chen | Portable Projection Screen |
| CN204241827U (en) * | 2014-12-08 | 2015-04-01 | 窦志刚 | Integral foldable framework projection screen |
-
2014
- 2014-12-08 CN CN201410736679.0A patent/CN104360577B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829878A (en) * | 1994-07-12 | 1996-02-02 | Casio Comput Co Ltd | Foldable screen device |
| CN102455586A (en) * | 2010-10-22 | 2012-05-16 | 崔定楠 | Ground lifting projection screen |
| US20120162760A1 (en) * | 2010-12-23 | 2012-06-28 | Yin-Wen Chen | Portable Projection Screen |
| CN204241827U (en) * | 2014-12-08 | 2015-04-01 | 窦志刚 | Integral foldable framework projection screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016091117A1 (en) * | 2014-12-08 | 2016-06-16 | 窦志刚 | Integrated foldable frame projection screen |
| CN105467740A (en) * | 2015-12-15 | 2016-04-06 | 重庆触视科技有限公司 | Bottom-up projection screen |
| CN105467740B (en) * | 2015-12-15 | 2018-02-13 | 重庆触视科技有限公司 | Projection screen from bottom to top |
| CN114114822A (en) * | 2021-12-21 | 2022-03-01 | 得力集团有限公司 | Curtain working method and electric projection curtain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104360577B (en) | 2016-06-22 |
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