CN202003134U - Pneumatic-type portable floor projection screen - Google Patents
Pneumatic-type portable floor projection screen Download PDFInfo
- Publication number
- CN202003134U CN202003134U CN 201020592150 CN201020592150U CN202003134U CN 202003134 U CN202003134 U CN 202003134U CN 201020592150 CN201020592150 CN 201020592150 CN 201020592150 U CN201020592150 U CN 201020592150U CN 202003134 U CN202003134 U CN 202003134U
- Authority
- CN
- China
- Prior art keywords
- outer cover
- projection screen
- cylinder
- fold mechanism
- curtain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to technology of a projection screen, in particular to a pneumatic-type portable floor projection screen, which comprises an outer cover. A roll shaft, an upper shaft, and a screen are arranged in the outer cover; one end of the screen is winded on the roll shaft, and the other end is fixed on the upper shaft; meanwhile, a folding mechanism and a cylinder are also arranged in the outer cover, wherein the cylinder is used for supporting the folding mechanism in a balance way when the folding mechanism bounds up, the bottom end of the folding mechanism is fixed in the outer cover, the top end of the folding mechanism is fixedly connected with the upper shaft, one end of the cylinder is fixed in the outer cover, and the other end of the cylinder is connected with the bottom of the folding mechanism. When in use, the upper shaft is pulled up or pressed down to lead the folding mechanism to bound, and the folding mechanism is supported by the cylinder in a balance way, or the folding mechanism is folded downwards, thereby supporting or folding the screen. In the utility model, the simple folding mechanism and the portable cylinder are adopted to support the screen, therefore, the pneumatic-type portable floor projection screen is simple in structure, is easy to move and is convenient to use.
Description
Technical field
The utility model relates to the projection screen technology, draws projection screen with relating in particular to a kind of pneumatic type.
Background technology
Projection screen (claiming projection screen again) can show the picture of projector's projection.At present, the kind of projection screen is a lot, and the support projection screen that uses support to prop up is arranged, and the drop-down projection screen that is mounted on wall is arranged, and has the ground that is pulled upwardly that is positioned over the ground to draw (claiming ground type again) projection screen.Wherein, it is mobile comparatively convenient that ground draws the projection screen use.
Draw projection screen mainly to comprise the outer cover of the hollow of prolate in the prior art, outer cover had both served as an act box, the also double base of doing, be provided with spool, curtain in the outer cover, curtain is wound in spool, and also be provided with collected type hinge joint elevating mechanism in the outer cover, collected type hinge joint elevating mechanism supports curtain when being used to use.But, draw collected type hinge joint elevating mechanism complex structure heaviness, the volume of projection screen bigger thisly, draw projection screen to be not easy to move with making, and need driving such as switch, complicated operation uses inconvenience.
Summary of the invention
The purpose of this utility model be to provide at the deficiencies in the prior art a kind of simple in structure, be easy to move, draw to pneumatic type easy to use projection screen.
The purpose of this utility model realizes by following technical measures: draw to a kind of pneumatic type projection screen, it includes outer cover, be provided with spool in the outer cover, go up axle, curtain, one end of curtain is wound in spool, the other end of curtain is fixed in axle, also be provided with fold mechanism in the described outer cover, be used for the cylinder that when fold mechanism is upspring balanced support is lived foldable structure, the bottom of fold mechanism is fixed in the outer cover, fixedly connected with last axle in the top of fold mechanism, one end of cylinder is fixed in the outer cover, and the other end of cylinder is connected with the bottom of fold mechanism.
Described cylinder is two, and two cylinders are symmetricly set on the both sides in the outer cover.
Described fold mechanism is positioned at the back side of curtain when upspringing.
The described axle of going up is provided with handle.
Described handle is positioned at the central authorities of axle.
Described outer cover comprises loam cake, lower cover, the mutual snapping of loam cake and lower cover.
The bottom of described lower cover is provided with the pad pin.
Described outer cover is rectangular.
Described outer cover also can ovalize.
The utility model beneficial effect is: the utility model includes outer cover, be provided with spool in the outer cover, go up axle, curtain, one end of curtain is wound in spool, the other end of curtain is fixed in axle, also be provided with fold mechanism in the outer cover, be used for the cylinder that when fold mechanism is upspring balanced support is lived foldable structure, the bottom of fold mechanism is fixed in the outer cover, fixedly connected with last axle in the top of fold mechanism, one end of cylinder is fixed in the outer cover, and the other end of cylinder is connected with the bottom of fold mechanism.In use, the utility model is as long as hold to go up that axle is up carried or toward pressing down, and fold mechanism is upspring and supports or makes fold mechanism down to pack up by cylinder balancing, thereby curtain is supported or accepts.Owing to adopt simple fold mechanism and light cylinder to support curtain, therefore the utlity model has simple in structure, be easy to move, characteristics easy to use.
Description of drawings
Fig. 1 be a kind of pneumatic type of the utility model draw the Facad structure synoptic diagram of projection screen embodiment 1 when curtain supports.
Fig. 2 be a kind of pneumatic type of the utility model draw the structure synoptic diagram of projection screen embodiment 1 when curtain supports.
Fig. 3 be a kind of pneumatic type of the utility model draw the loam cake of projection screen embodiment 1 and the structural representation of lower cover.
In Fig. 1, Fig. 2 and Fig. 3, include:
11---loam cake 12---lower cover
2---going up axle 21---handle
3---curtain 4---fold mechanism
5---cylinders 6---pad pin.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1
Draw to a kind of pneumatic type of the present utility model projection screen, shown in Fig. 1～3, include outer cover, be provided with spool in the outer cover, go up axle 2, curtain 3, one end of curtain 3 is wound in spool, the other end of curtain 3 is fixed in axle 2, also being provided with fold mechanism 4(in the outer cover claims again, shear arm), be used for the cylinder 5 that when fold mechanism 4 is upspring balanced support is lived foldable structure 4, wherein, whole fold mechanism 4 has certain elasticity, can support certain pressure when fold mechanism 4 is upspring, and along with the height difference of upspringing, the pressure of support is also different; The bottom of fold mechanism 4 is fixed in the outer cover, fixedly connected with last axle 2 in the top of fold mechanism 4, when being upspring, fold mechanism 4 curtain 3 can be supported, one end of cylinder 5 is fixed in the outer cover, the other end of cylinder 5 is connected with the bottom of fold mechanism 4, the bottom of fold mechanism 4 can be propped up when cylinder 5 has enough anchorage forces, fold mechanism 4 just can not depressed by last axle 2 and curtain 3 downward pressure, thereby curtain 3 is supported.
Fold mechanism 4 is positioned at the back side of curtain 3 when upspringing, make fold mechanism 4 can not influence the demonstration of projected picture, and last axle 2 is provided with handle 21, and handle 21 is positioned at central authorities of spools 2, makes the user can hold handle 21 easily with curtain 3 pull-ups.
Outer cover comprises loam cake 11, lower cover 12, loam cake 11 and lower cover 12 mutual snappings, and wherein, loam cake 11 is the flip-shell structure, open loam cake 11 during use, just can pull-up curtain 3, use finish after, can pack up curtain 3, the loam cake 11 that closes makes the utility model be easy to more move.
The bottom of lower cover 12 is provided with pad pin 6, and certainly, pad pin 6 can be arranged to adjustable, makes outer cover in use, can be adjusted to horizontal positioned; Wherein, described outer cover is rectangular, so that put and move.
The utility model in use, as long as open loam cake 11, just can hold the handle 21 of axle 2 up carries, fold mechanism 4 is upspring, pull out the curtain 3 that is wrapped on the spool simultaneously, when the height of up carrying to needs can stop, at this moment, two cylinders 5 can support fold mechanism 4 evenly, thereby curtain 3 is supported, and draw projection screen with constituting pneumatic type; After use finishing, as long as the handle 21 of holding axle 2 just can make fold mechanism 4 down pack up, thereby curtain 3 is accepted toward pressing down, make fold mechanism 4, cylinder 5, curtain 3, upward spools 2 all take in the lower cover 12, then, the loam cake 11 that closes gets final product.
Because the utility model only adopts the fold mechanism of simply being made up of connecting rod 4 to support curtain 3, and the weight of last axle 2 and curtain 3 is less, as long as use little, the lightweight cylinder 5 of volume, just fold mechanism 4 can be supported evenly, so, of the present utility model simple in structure, and it is comparatively convenient to be easy to move, to use.
Draw to a kind of pneumatic type of the present utility model the embodiment 2 of projection screen, the difference of present embodiment and embodiment 1 is, the outer cover ovalize, certainly, described outer cover also can be other shape, as long as it can place parts such as fold mechanism 4, cylinder 5, curtain 3, last axle 2 preferably.Other structure and the principle of work of present embodiment are identical with embodiment 1, do not repeat them here.
Should be noted that at last; above embodiment is only in order to the explanation the technical solution of the utility model; but not to the restriction of the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (9)
1. draw to a pneumatic type projection screen, it includes outer cover, be provided with spool in the outer cover, go up axle, curtain, one end of curtain is wound in spool, the other end of curtain is fixed in axle, it is characterized in that: also be provided with fold mechanism in the described outer cover, be used for the cylinder that when fold mechanism is upspring balanced support is lived foldable structure, the bottom of fold mechanism is fixed in the outer cover, fixedly connected with last axle in the top of fold mechanism, one end of cylinder is fixed in the outer cover, and the other end of cylinder is connected with the bottom of fold mechanism.
2. draw projection screen to pneumatic type according to claim 1, it is characterized in that: described cylinder is two, and two cylinders are symmetricly set on the both sides in the outer cover.
3. draw projection screen to pneumatic type according to claim 1, it is characterized in that: described fold mechanism is positioned at the back side of curtain when upspringing.
4. draw projection screen to pneumatic type according to claim 1, it is characterized in that: the described axle of going up is provided with handle.
5. draw projection screen to pneumatic type according to claim 4, it is characterized in that: described handle is positioned at the central authorities of axle.
6. draw projection screen to pneumatic type according to claim 1, it is characterized in that: described outer cover comprises loam cake, lower cover, the mutual snapping of loam cake and lower cover.
7. draw projection screen to pneumatic type according to claim 6, it is characterized in that: the bottom of described lower cover is provided with the pad pin.
According to any described pneumatic type of claim 1 to 7 draw projection screen, it is characterized in that: described outer cover is rectangular.
According to any described pneumatic type of claim 1 to 7 draw projection screen, it is characterized in that: described outer cover ovalize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020592150 CN202003134U (en) | 2010-11-04 | 2010-11-04 | Pneumatic-type portable floor projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020592150 CN202003134U (en) | 2010-11-04 | 2010-11-04 | Pneumatic-type portable floor projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003134U true CN202003134U (en) | 2011-10-05 |
Family
ID=44705870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020592150 Expired - Lifetime CN202003134U (en) | 2010-11-04 | 2010-11-04 | Pneumatic-type portable floor projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003134U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864238A (en) * | 2014-02-21 | 2015-08-26 | 上海交通大学 | Foldable portable lifting platform |
| CN107387969A (en) * | 2017-09-18 | 2017-11-24 | 安徽沃弗电力科技有限公司 | A kind of desk permanent-magnet speed regulator interactive based on two-fold disk |
-
2010
- 2010-11-04 CN CN 201020592150 patent/CN202003134U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864238A (en) * | 2014-02-21 | 2015-08-26 | 上海交通大学 | Foldable portable lifting platform |
| CN104864238B (en) * | 2014-02-21 | 2017-03-15 | 上海交通大学 | Folding portable lifting platform |
| CN107387969A (en) * | 2017-09-18 | 2017-11-24 | 安徽沃弗电力科技有限公司 | A kind of desk permanent-magnet speed regulator interactive based on two-fold disk |
| CN107387969B (en) * | 2017-09-18 | 2019-03-22 | 安徽沃弗电力科技有限公司 | A kind of desk permanent-magnet governor based on two-fold disk interactive mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |