CN201845167U - Spring pull projection screen - Google Patents
Spring pull projection screen Download PDFInfo
- Publication number
- CN201845167U CN201845167U CN 201020592156 CN201020592156U CN201845167U CN 201845167 U CN201845167 U CN 201845167U CN 201020592156 CN201020592156 CN 201020592156 CN 201020592156 U CN201020592156 U CN 201020592156U CN 201845167 U CN201845167 U CN 201845167U
- Authority
- CN
- China
- Prior art keywords
- outer cover
- projection screen
- fold mechanism
- spring
- 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
Links
- 239000004744 fabric Substances 0.000 abstract 4
- 230000003028 elevating effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
Images
Landscapes
- Curtains And Furnishings For Windows Or Doors (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
本实用新型涉及投影幕技术，尤其涉及一种弹簧式地拉投影幕，其包括有外罩，外罩内设置有卷轴、上轴、幕布，幕布的一端缠绕于卷轴，幕布的另一端固定于上轴，外罩内还设置有折叠机构、用于在折叠机构弹起时平衡支撑住折叠结构的拉簧，折叠机构的底端固定于外罩内，折叠机构的顶端与上轴固定连接，拉簧的一端固定于外罩内，拉簧的另一端与折叠机构的底部连接。由于采用简单的折叠机构和轻便的拉簧来支撑幕布，因此本实用新型具有结构简单、易于搬动、使用方便的特点；而且，本实用新型的外罩外侧设置有滚轮，使本实用新型的搬动更加方便。
The utility model relates to projection screen technology, and in particular to a spring-type ground-pull projection screen, which includes an outer cover, a reel, an upper shaft, and a screen cloth arranged in the outer cover, one end of the screen cloth is wound around the reel, and the other end of the screen cloth is fixed to the upper shaft. A folding mechanism is also arranged in the outer cover, and a tension spring is used to balance and support the folding structure when the folding mechanism pops up. The bottom end of the folding mechanism is fixed in the outer cover, the top end of the folding mechanism is fixedly connected to the upper shaft, one end of the tension spring is fixed in the outer cover, and the other end of the tension spring is connected to the bottom of the folding mechanism. Since a simple folding mechanism and a light tension spring are used to support the screen cloth, the utility model has the characteristics of simple structure, easy to move, and convenient to use; moreover, a roller is arranged on the outside of the outer cover of the utility model, so that the movement of the utility model is more convenient.
Description
Technical field
The utility model relates to the projection screen technology, draws projection screen with relating in particular to a kind of spring.
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 spring easy to use projection screen.
The purpose of this utility model realizes by following technical measures: draw projection screen a kind of spring, 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 extension spring 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 extension spring is fixed in the outer cover, and the other end of extension spring is connected with the bottom of fold mechanism.
Described outer cover arranged outside has roller.
Described roller is positioned at the two ends of outer cover.
Described extension spring is two, and two extension springs are arranged in a crossed manner.
Described fold mechanism is positioned at the back side of curtain when upspringing.
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 extension spring 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 extension spring is fixed in the outer cover, and the other end of extension spring 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 upspring and by the extension spring balanced support firmly or fold mechanism is down packed up, thereby curtain is supported or accepts.Owing to adopt simple fold mechanism and light extension spring to support curtain, therefore the utlity model has simple in structure, be easy to move, characteristics easy to use; And outer cover arranged outside of the present utility model has roller, make of the present utility model move convenient.
Description of drawings
Fig. 1 be a kind of spring of the utility model draw the Facad structure synoptic diagram of projection screen embodiment 1 when curtain supports.
Fig. 2 be a kind of spring of the utility model draw the structure synoptic diagram of projection screen embodiment 1 when curtain supports.
In Fig. 1, Fig. 2, include:
1---outer cover 2---gone up axle
3---curtain 4---fold mechanism
5---extension spring 6---roller.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Draw projection screen a kind of spring of the present utility model, as shown in Figure 1, 2, include outer cover 1, be provided with spool in the outer cover 1, 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 1 claims again, shear arm), be used for the extension spring 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 1, 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 extension spring 5 is fixed in the outer cover 1, the other end of extension spring 5 is connected with the bottom of fold mechanism 4, the bottom of fold mechanism 4 can be propped up when extension spring 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.
Wherein, fold mechanism 4 is positioned at the back side of curtain 3 when upspringing, and makes fold mechanism 4 can not influence the demonstration of projected picture; Described outer cover 1 is rectangular, so that put and move.
The utility model in use, as long as opening part at outer cover 1, axle 2 is up carried in the pulling, 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 extension springs arranged in a crossed manner 5 can support fold mechanism 4 evenly, thereby curtain 3 is supported, and draw projection screen with constituting spring; After use finishing, as long as hold axle 2, fold mechanism 4 is down packed up, thereby curtain 3 is accepted toward pressing down, make fold mechanism 4, extension spring 5, curtain 3, upward spools 2 all take in the outer cover 1.
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 extension spring 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.
Embodiment 2
Draw the embodiment 2 of projection screen a kind of spring of the present utility model, the difference of present embodiment and embodiment 1 is, outer cover 1 ovalize, certainly, described outer cover 1 also can be other shape, as long as it can place parts such as fold mechanism 4, extension spring 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 (7)
1. draw projection screen a spring, 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 extension spring 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 extension spring is fixed in the outer cover, and the other end of extension spring is connected with the bottom of fold mechanism.
2. draw projection screen spring according to claim 1, it is characterized in that: described outer cover arranged outside has roller.
3. draw projection screen spring according to claim 2, it is characterized in that: described roller is positioned at the two ends of outer cover.
4. draw projection screen spring according to claim 1, it is characterized in that: described extension spring is two, and two extension springs are arranged in a crossed manner.
5. draw projection screen spring according to claim 1, it is characterized in that: described fold mechanism is positioned at the back side of curtain when upspringing.
According to any described spring of claim 1 to 5 draw projection screen, it is characterized in that: described outer cover is rectangular.
According to any described spring of claim 1 to 5 draw projection screen, it is characterized in that: described outer cover ovalize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020592156 CN201845167U (en) | 2010-11-04 | 2010-11-04 | Spring pull projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020592156 CN201845167U (en) | 2010-11-04 | 2010-11-04 | Spring pull projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845167U true CN201845167U (en) | 2011-05-25 |
Family
ID=44040054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020592156 Expired - Lifetime CN201845167U (en) | 2010-11-04 | 2010-11-04 | Spring pull projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845167U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686145A (en) * | 2019-01-15 | 2019-04-26 | 莱芜职业技术学院 | A kind of intelligent tutoring system of ideological and political education |
| CN111055056A (en) * | 2020-01-14 | 2020-04-24 | 凉山中水恒岳新能源装备有限公司 | Welding zero line bridging device |
| CN112002272A (en) * | 2020-09-17 | 2020-11-27 | 左影 | Portable project management progress tracking display board |
| CN113204164A (en) * | 2021-05-18 | 2021-08-03 | 广州市雄云视听设备有限公司 | Electric floor-pulling projection screen |
-
2010
- 2010-11-04 CN CN 201020592156 patent/CN201845167U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686145A (en) * | 2019-01-15 | 2019-04-26 | 莱芜职业技术学院 | A kind of intelligent tutoring system of ideological and political education |
| CN111055056A (en) * | 2020-01-14 | 2020-04-24 | 凉山中水恒岳新能源装备有限公司 | Welding zero line bridging device |
| CN112002272A (en) * | 2020-09-17 | 2020-11-27 | 左影 | Portable project management progress tracking display board |
| CN113204164A (en) * | 2021-05-18 | 2021-08-03 | 广州市雄云视听设备有限公司 | Electric floor-pulling projection screen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201845167U (en) | Spring pull projection screen | |
| CN201853059U (en) | A flat-opening bracket projection screen | |
| CN203742255U (en) | Tent and mounting structure for eave rods of tent | |
| CN201853058U (en) | A portable bracket projection screen | |
| CN102243429A (en) | Portable screen of micro projector | |
| CN202125715U (en) | Telescopic suspension type support | |
| CN209044949U (en) | A kind of art teaching sample display device | |
| CN201845166U (en) | Improved Portable Projection Screen Structure | |
| CN105525853A (en) | Curtain body positioning mechanism of pull-rope-free window curtain and pull-rope-free window curtain using curtain body positioning mechanism | |
| CN202003134U (en) | Pneumatic ground pull projection screen | |
| CN101974842A (en) | Sun-proof and rain-proof telescopic clothes-horse | |
| CN206541617U (en) | A kind of musicology teaching roll type music easel | |
| CN205697614U (en) | A kind of collapsible monomer mop-pail stands | |
| CN104222030B (en) | A kind of Foldable crab pot | |
| CN201870080U (en) | Foldable school desk | |
| CN205122080U (en) | Foldable shaft teaching aid | |
| CN204862086U (en) | Umbrella formula folding chair | |
| CN207852263U (en) | A kind of canvas exhibiting device that can be quickly wrapping with | |
| CN102440491A (en) | Wind-proof umbrella | |
| CN209018024U (en) | A multifunctional teaching desk | |
| CN207047740U (en) | A collapsible traffic cone | |
| CN201902776U (en) | Display telescopic frame | |
| CN201998620U (en) | Picture hanging stand | |
| CN103662530A (en) | Portable wastepaper basket frame | |
| CN218303910U (en) | Lightweight and corrosion-resistant multifunctional outdoor coffee table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |