CN108153101B - Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge - Google Patents
Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge Download PDFInfo
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- CN108153101B CN108153101B CN201810144254.9A CN201810144254A CN108153101B CN 108153101 B CN108153101 B CN 108153101B CN 201810144254 A CN201810144254 A CN 201810144254A CN 108153101 B CN108153101 B CN 108153101B
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- projection screen
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- 230000001737 promoting effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
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Classifications
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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)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a transversely-opened and parallel movable hinged-shear supporting type rollback projection screen which comprises a projection screen, a left shell and a right shell, wherein a first rotating pipe is rotationally connected to the left shell, one end of the projection screen is fixedly connected with the first rotating pipe, the other end of the projection screen is fixedly connected with the right shell, the first rotating pipe is provided with a first elastic piece, the first elastic piece can generate torque for preventing or promoting the first rotating pipe to rotate, a supporting mechanism is connected between the left shell and the right shell, the supporting mechanism comprises two first supporting rods hinged to the left shell and two second supporting rods hinged to the right shell, the first supporting rods and the second supporting rods are hinged to each other at free ends, and a second elastic piece capable of enabling the right shell to deviate from the left shell to move is arranged between the left shell and the first supporting rods. The mechanical supporting mechanism can realize automatic opening and rewinding of the projection curtain, and is simple and convenient to operate and high in reliability.
Description
Technical Field
The invention relates to the technical field of projection screen devices, in particular to a transversely-opened and closed parallel movable hinge-shear supporting type rewinding projection screen.
Background
In order to improve the user experience of the projection screen device, more and more projection screens are added with the functions of automatically opening and rewinding the projection screens.
At present, most projection curtain devices realize automatic opening and rewinding of a projection curtain through motor control, but the motor control mode is easy to break down, and the reliability is not very high. Moreover, for the projection curtain device which is opened and closed transversely, the curtain cannot be kept flat by utilizing the gravity of the projection curtain, and if a motor control mode is still adopted, the opening and rewinding of the projection curtain cannot be realized.
Disclosure of Invention
The invention aims to solve the technical problem of providing a mechanical parallel movable hinge-shear supported type rollback projection screen capable of realizing automatic opening and rollback of a projection screen.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a horizontal parallel movable hinge cuts back support formula projection screen, includes projection curtain and is half-moon shape rectangular and can laminate relatively left casing and right casing, left side casing internal rotation is connected with first pivot, the one end and the first pivot fixed connection of projection curtain, the other end and the right casing fixed connection of projection curtain, be equipped with first elastic component on the first pivot, first elastic component can produce and hinder or promote first pivot to take place pivoted moment of torsion, be connected with the supporting mechanism that is horizontal symmetry and arrange between left side casing and the right casing, supporting mechanism includes two first supporting rods that articulate respectively on left side casing, lower part and two second supporting rods that articulate respectively on right side casing, the first supporting rod and the second supporting rod that are located left side casing and right side casing the same part are articulated each other at the free end, be equipped with the second elastic component between left side casing and the first supporting rod, the second elastic component can produce and stimulate first supporting rod and rotate and then take place pivoted moment of torsion, be connected with between left side casing and the right side casing, but the second supporting rod is equipped with one of them limit post is equipped with limit groove along the limit post.
Further, the first rotating pipe is a hollow rotating pipe, the first elastic piece is a torsion spring embedded into the hollow rotating pipe, a hook at one end part of the torsion spring is fixedly connected with the hollow rotating pipe, and a hook at the other end part of the torsion spring is fixedly connected with the left shell.
Further, a limiting shaft penetrating through the torsion spring is fixedly arranged in the left shell, a limiting through hole is formed in the end portion of the limiting shaft, and a fastening screw penetrates through a hook and the limiting through hole in the other end portion of the torsion spring.
Further, the second elastic member is an extension spring.
Further, a second rotating pipe is arranged in the right shell, and the other end of the projection curtain is fixedly connected to the second rotating pipe.
Further, the lower end parts of the left shell and the right shell are respectively provided with a left end cover and a right end cover which are in a half-moon shape, and the bottoms of the left end cover and the right end cover are provided with a pair of brackets which are perpendicular to the projection curtain and are oppositely arranged.
Further, the left end cover and the right end cover are provided with grooves perpendicular to the projection curtain and penetrating through the end covers, the support is a U-shaped spring, two end parts of the U-shaped spring are bent to form limiting parts, and the side walls of the two end parts of the grooves are provided with limiting holes for the limiting parts to be inserted.
Further, the bottom surface of the groove is provided with a pair of limit hooks for limiting the U-shaped spring in the groove.
Further, the top of left end cover is equipped with the stopper of directional right-hand member lid, the top of right-hand member lid is equipped with the elasticity opening part of directional left end cover, the stopper includes the drive portion of lateral dimension from small to big and the joint portion of lateral dimension from large to small, elasticity opening part includes the transition portion of opening dimension from large to small and the locking portion of opening dimension from small to large, joint portion and the mutual butt of locking portion.
The beneficial effects are that: in the technical scheme of the invention, a mechanical supporting mechanism is adopted, and the rollback of the projection curtain is realized by using the torque which is generated by the first elastic piece and used for obstructing or promoting the first rotating pipe to rotate; the first supporting rod is pulled to rotate by the second elastic piece, so that the right shell is pulled to deviate from the left shell to move, and the projection curtain is opened. For the projection curtain in an open state, an initial force for rewinding the projection curtain is given first, so that the force arm of the second elastic piece is reduced until the torque generated by the first elastic piece is larger than that generated by the second elastic piece, the projection curtain is automatically rewound gradually, and when the left shell and the right shell are attached, the second elastic piece is overlapped with the first supporting rod, so that a self-locking state is formed. For the projection curtain in a closed state, an initial force for opening the projection curtain is given first, so that the arm of force of the second elastic piece is increased until the torque generated by the second elastic piece is larger than that generated by the first elastic piece, and the projection curtain is gradually and automatically opened. The operation is simple and convenient, and the reliability is high.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic view showing a transversely opened and closed parallel movable hinge-shear supported type rolled-back projection screen in an opened state;
FIG. 2 is a schematic diagram showing a fitting state of a left housing and a right housing according to an embodiment of the present invention;
FIG. 3 is a schematic view of a parallel movable hinge-shear supporting mechanism in a pulled-apart state according to an embodiment of the present invention;
FIG. 4 is a schematic view illustrating an assembly of a first rotating tube with torsion springs embedded therein according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention with a U-shaped spring in an open support state;
FIG. 6 is a schematic view of a U-shaped spring in a closed state according to an embodiment of the present invention;
fig. 7 is an assembly schematic diagram of a stopper and an elastic opening member according to an embodiment of the invention.
Detailed Description
Referring to fig. 1 to 7, a transversely-opened and parallel movable hinge-cut supporting type rewinding projection screen in an embodiment of the invention comprises a projection screen 3, a half-moon-shaped long left shell 1 and a half-moon-shaped long right shell 2 which can be relatively attached, wherein a first rotating pipe is rotatably connected with the left shell 1, one end of the projection screen 3 is fixedly connected with the first rotating pipe, and particularly, the end part of the projection screen 3 can be adhered on an arc surface of the first rotating pipe through rubberizing. The other end of the projection curtain 3 is fixedly connected with the right shell 2, specifically, a second rotating pipe is arranged in the right shell 2, and the other end of the projection curtain 3 is fixedly connected to the second rotating pipe. The first rotating tube is provided with a first elastic member, and the first elastic member can generate torque for preventing or promoting the first rotating tube to rotate, so that the first rotating tube has a tendency to keep the projection curtain 3 wound on the outer periphery of the projection curtain. The left shell 1 and the right shell 2 are connected with a supporting mechanism 4 which is transversely and symmetrically arranged, the supporting mechanism 4 comprises two first supporting rods 41 which are respectively hinged to the upper part and the lower part of the left shell 1 and two second supporting rods 42 which are respectively hinged to the upper part and the lower part of the right shell 2, the first supporting rods 41 and the second supporting rods 42 which are positioned at the same parts of the left shell 1 and the right shell 2 are mutually hinged at free ends, a second elastic piece is arranged between the left shell 1 and the first supporting rods 41, the second elastic piece can produce a pulling force which pulls the first supporting rods 41 to rotate so as to enable the right shell 2 to deviate from the left shell 1, a limiting groove 421 is formed in one second supporting rod 42, a limiting column 422 embedded into the limiting groove 421 is formed in the other second supporting rod 42, the limiting column 422 can slide back and forth along the limiting groove 421, and further ensure that the right shell 2 moves vertically through the limiting, and the whole projection curtain 3 can be smoothly opened and rewound.
The invention adopts the mechanical supporting mechanism 4, and the rollback of the projection curtain 3 is realized by utilizing the torque which is generated by the first elastic piece and used for obstructing or promoting the rotation of the first rotating pipe; the projection curtain 3 is opened by the pulling force generated by the second elastic piece, which pulls the first supporting rod 41 to rotate so as to enable the right shell 2 to deviate from the left shell 1 to move. As can be seen from the connection mode of the supporting mechanism 4, the torque of the first elastic member gradually increases with the opening of the projection curtain 3; the second elastic piece is opened along with the projection curtain 3, and the arm of force is grow gradually, and the pulling force is also grow gradually. For the projection curtain 3 in the open state, an initial force is given to the projection curtain 3 for rewinding, so that the arm of force of the second elastic element is reduced until the torque generated by the first elastic element is larger than that generated by the second elastic element, the projection curtain 3 is automatically rewound gradually, and when the left shell 1 and the right shell 2 are attached, the second elastic element is overlapped with the first supporting rod 41, so that a self-locking state is formed. For the projection curtain 3 in the closed state, an initial force is given to open the projection curtain 3, so that the arm of force of the second elastic member is increased until the torque generated by the second elastic member is greater than the torque generated by the first elastic member, and the projection curtain 3 is gradually and automatically opened. The operation is simple and convenient, and the reliability is high.
Preferably, the first rotating tube is a hollow rotating tube 7, the first elastic piece is a torsion spring 71 embedded into the hollow rotating tube 7, a hook at one end of the torsion spring 71 is fixedly connected with the hollow rotating tube 7, and a hook at the other end of the torsion spring 71 is fixedly connected with the left shell 1. Meanwhile, a limiting shaft 11 penetrating through the torsion spring 71 is fixedly arranged in the left shell 1, a limiting through hole is formed in the end portion of the limiting shaft 11, and a fastening screw 12 penetrates through a hook and the limiting through hole at the other end portion of the torsion spring 71. The hook at the other end part of the torsion spring 71 is fixedly connected with the limiting shaft 11 through the fastening screw 12, the hollow rotating tube 7 rotates relative to the left shell 1, one end of the torsion spring 71 rotates along with the hollow rotating tube, and the other end of the torsion spring 71 does not rotate relative to the left shell 1. The projection curtain 3 is opened, and the larger the torsion spring 71 deforms, the larger the torque; the smaller the torsion spring 71 is deformed, the smaller the torque of the projection screen 3 is rolled back. Meanwhile, when the left shell 1 and the right shell 2 are mutually attached, the torsion spring 71 has small deformation, and can provide self-locking torque.
Preferably, the second elastic member is an extension spring 43. One end of the tension spring 43 is fixed to the middle of the first support bar 41, the other end is fixed to the left housing 1, and the fixed point thereof is closer to the upper and lower end portions of the left housing 1 than the hinge point of the first support bar 41. When the support mechanism 4 is in the closed position, the tension spring 43 remains substantially co-linear with the first support bar 41, facilitating the maintenance of a self-locking condition of the support mechanism 4; when the supporting mechanism 4 is opened transversely, the arm of force acting on the first supporting rod 41 by the tension spring 43 is gradually increased, so that the first supporting rod 41 is driven to rotate upwards and downwards respectively, and the right shell 2 is pushed to move away from the left shell 1 until the projection curtain 3 is opened completely.
Preferably, the lower ends of the left shell 1 and the right shell 2 are respectively provided with a half-moon-shaped left end cover 5 and a half-moon-shaped right end cover 6, and the bottoms of the left end cover 5 and the right end cover 6 are provided with a pair of brackets which are perpendicular to the projection curtain 3 and are oppositely arranged. Perpendicular to projection curtain 3 sets up, is favorable to maintaining the balance of whole projection curtain, is difficult for taking place to empty the phenomenon, is convenient for vertically place.
Preferably, the left end cover 5 and the right end cover 6 are provided with grooves 51 perpendicular to the projection curtain 3 and penetrating through the bottoms of the end covers, the support is a U-shaped spring 52, two end parts of the U-shaped spring 52 are bent to form limiting parts, and the side walls of the two end parts of the grooves 51 are provided with limiting holes for inserting the limiting parts. The U-shaped spring 52 can rotate relative to the limiting hole, so that the U-shaped spring 52 can be opened and closed. When the U-shaped spring 52 is not needed for supporting, the U-shaped spring is folded and placed in the groove 51, and the overall storage size is reduced.
Preferably, the bottom surface of the recess 51 is provided with a pair of limit hooks 53 for limiting the U-shaped spring 52 in the recess 51. The limiting hook 53 is fixed at one end of the groove 51 and comprises two protrusions which are arranged back to back, the protrusions point to the side wall of the groove 51, when the U-shaped spring 52 needs to be folded, the U-shaped spring 52 is rotated to the upper portion of the protrusions, pressure is applied, the U-shaped spring 52 is deformed, and then the U-shaped spring 52 is clamped below the protrusions, so that limiting of the U-shaped spring 52 is achieved. The specific operation is as follows: one U-shaped spring 52 is rotated into the groove 51, and then the other U-shaped spring 52 is rotated to be clamped under the protrusion, so that the two U-shaped springs 52 cannot rotate freely.
Preferably, the top of the left end cover 5 is provided with a limiting block 54 pointing to the right end cover 6, the top of the right end cover 6 is provided with an elastic opening member 55 pointing to the left end cover 5, the limiting block 54 comprises a driving part 541 with a transverse size changing from small to large and a combining part 542 with a transverse size changing from small, the elastic opening member 55 comprises a transition part 551 with an opening size changing from small to large and a locking part 552 with an opening size changing from small, and the combining part 542 and the locking part 552 are mutually abutted. The driving portion 541 abuts against the transition portion 551 to open the elastic opening member 55 until the coupling portion 542 abuts against the locking portion 552, so as to form a snap-type locking, thereby further realizing self-locking of the projection screen. Simultaneously, the left end cover 5 and the right end cover 6 positioned at the top of the left shell 1 and the right shell 2 are also internally provided with a limiting block 54 and an elastic opening piece 55, so that the self-locking of the upper end part and the lower end part of the projection screen is realized.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (7)
1. A transversely-opened and closed parallel movable hinge-shear supporting type rollback projection screen is characterized in that: including projection curtain and be half moon shape long banding and can laminate relatively left casing and right casing, left side casing internal rotation is connected with first commentaries on classics pipe, the one end and the first commentaries on classics pipe fixed connection of projection curtain are equipped with the second commentaries on classics pipe in the right side casing, the other end fixed connection of projection curtain is on the second commentaries on classics pipe, be equipped with first elastic component on the first commentaries on classics pipe, first elastic component can produce the moment of torsion that hinders or impels first commentaries on classics pipe to take place to rotate, be connected with the supporting mechanism that is transverse symmetrical arrangement between left side casing and the right side casing, supporting mechanism includes two first supporting rods and two second supporting rods that articulate respectively on the left side casing, lower part on the right side casing, are located left side casing and right side casing the same part first supporting rod and second supporting rod are articulated each other at the free end, the second elastic component can produce and stimulate first supporting rod rotation and then make right side casing deviate from left side casing emergence pivoted moment of torsion, be equipped with one of them second supporting rod and left side casing and right side casing, be equipped with one of them and limit post limit cap is equipped with one of them and one of them is equipped with the limit groove to the end cap, the end cover is equipped with the limit groove is passed through to the end cap to the left side.
2. The transversely opening and closing parallel movable hinged shear supported rollback projection screen of claim 1, wherein: the first rotating pipe is a hollow rotating pipe, the first elastic piece is a torsion spring embedded into the hollow rotating pipe, a hook at one end part of the torsion spring is fixedly connected with the hollow rotating pipe, and a hook at the other end part of the torsion spring is fixedly connected with the left shell.
3. The transversely opening and closing parallel movable hinge-shear supported rollback projection screen of claim 2, wherein: the left shell is internally and fixedly provided with a limiting shaft penetrating through the torsion spring, the end part of the limiting shaft is provided with a limiting through hole, and a hook at the other end part of the torsion spring and the limiting through hole penetrate through a fastening screw.
4. The transversely opening and closing parallel movable hinged shear supported rollback projection screen of claim 1, wherein: the second elastic piece is an extension spring.
5. The transversely opening and closing parallel movable hinged shear supported rollback projection screen of claim 1, wherein: the left end cover and the right end cover are provided with grooves perpendicular to the projection curtain and penetrating through the end covers, the support is a U-shaped spring, two end parts of the U-shaped spring are bent to form limiting parts, and the side walls of the two end parts of the grooves are provided with limiting holes for the limiting parts to be inserted.
6. The transversely opening and closing parallel movable hinged shear supported rollback projection screen of claim 5, wherein: the bottom surface of the groove is provided with a pair of limit hooks for limiting the U-shaped spring in the groove.
7. The transversely opening and closing parallel movable hinged shear supported rollback projection screen of claim 1, wherein: the top of left end cover is equipped with the stopper of directional right-hand member lid, the top of right-hand member lid is equipped with the elasticity opening part of directional left end cover, the stopper includes drive portion and the lateral dimension of lateral dimension from a small to a big one by the joint portion that big to a small, elasticity opening part includes the transition portion and the locking portion of opening dimension from a big to a small one that the opening dimension is from a small to a big one, joint portion and the mutual butt of locking portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144254.9A CN108153101B (en) | 2018-02-11 | 2018-02-11 | Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144254.9A CN108153101B (en) | 2018-02-11 | 2018-02-11 | Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108153101A CN108153101A (en) | 2018-06-12 |
| CN108153101B true CN108153101B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810144254.9A Active CN108153101B (en) | 2018-02-11 | 2018-02-11 | Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge |
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| Country | Link |
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| CN (1) | CN108153101B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11332249B2 (en) | 2020-01-14 | 2022-05-17 | B/E Aerospace, Inc. | Actuatable display devices for aircraft passenger compartment suites |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562013A (en) * | 1942-12-02 | 1944-06-14 | John Leslie Stableford | Improvements in or relating to roll-up screens and awnings |
| CN2120350U (en) * | 1992-03-28 | 1992-10-28 | 陈逸呜 | Electric controlling apparatus for screen |
| US6297905B1 (en) * | 1998-08-20 | 2001-10-02 | Izumi-Cosmo Co., Ltd. | Portable screen assembly |
| JP2011028209A (en) * | 2009-07-24 | 2011-02-10 | Guangzhou Grandview Crystal Screen Co Ltd | Screen device |
| CN102608857A (en) * | 2012-03-10 | 2012-07-25 | 伍炳辉 | Novel floor standing screen |
| CN207882645U (en) * | 2018-02-11 | 2018-09-18 | 广州市雄云视听设备有限公司 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
-
2018
- 2018-02-11 CN CN201810144254.9A patent/CN108153101B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562013A (en) * | 1942-12-02 | 1944-06-14 | John Leslie Stableford | Improvements in or relating to roll-up screens and awnings |
| CN2120350U (en) * | 1992-03-28 | 1992-10-28 | 陈逸呜 | Electric controlling apparatus for screen |
| US6297905B1 (en) * | 1998-08-20 | 2001-10-02 | Izumi-Cosmo Co., Ltd. | Portable screen assembly |
| JP2011028209A (en) * | 2009-07-24 | 2011-02-10 | Guangzhou Grandview Crystal Screen Co Ltd | Screen device |
| CN102608857A (en) * | 2012-03-10 | 2012-07-25 | 伍炳辉 | Novel floor standing screen |
| CN207882645U (en) * | 2018-02-11 | 2018-09-18 | 广州市雄云视听设备有限公司 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
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| Publication number | Publication date |
|---|---|
| CN108153101A (en) | 2018-06-12 |
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