CN205656418U - Projection screen - Google Patents
Projection screen Download PDFInfo
- Publication number
- CN205656418U CN205656418U CN201521044749.2U CN201521044749U CN205656418U CN 205656418 U CN205656418 U CN 205656418U CN 201521044749 U CN201521044749 U CN 201521044749U CN 205656418 U CN205656418 U CN 205656418U
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- CN
- China
- Prior art keywords
- projection screen
- worm
- workbench
- motor
- elevating lever
- 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 - Fee Related
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Abstract
The utility model discloses a projection screen includes the spool and rolls up rolling up epaxial projection curtain, still includes workstation, worm wheel, worm, slider and lifter, be equipped with the recess on the workstation, the spool is located the recess and rotates with the workstation and be connected, one side is equipped with the lead screw on the workstation, and the opposite side is equipped with the pole setting parallel with the lead screw, lifter one end and lead screw threaded connection, the other end is connected with the slider, slider and pole setting sliding connection, be equipped with the motor on the workstation, the motor output end is connected with the worm, the worm wheel is connected with lead screw one end, the snail worm and wheel is connected. The application of the utility model relates to a screen can be from bottom to top, and is easy to assemble.
Description
Technical field
This utility model relates to projection arrangement field, is specifically related to a kind of projection screen.
Background technology
Projector is a kind of can be connected the corresponding video signal of broadcasting with computer VCD, DVD, game machine etc. by different interface by the equipment on the curtain of image or VIDEO PROJECTION.Projector is widely used in family, office, school and public place of entertainment.
Typically when using projector, it is necessary to have projection screen to coordinate with projector.When projection, it is necessary first to projection screen screen is well placed.Existing projection screen generally is Scroll, usually rolls, and time to be used, spool rotates and put down by screen.And projector is when sometimes needing out of doors or need Emergency use, also needing extra mounting bracket to fix spool if installing projection screen, this just brings great inconvenience to use.
Utility model content
The purpose of this utility model is to provide a kind of projection screen that can from bottom to top, conveniently install.
For reaching above-mentioned purpose, base case of the present utility model is as follows: a kind of projection screen, the projection screen on spool including spool and volume, also include workbench, worm gear, worm screw, sliding part and elevating lever, described workbench is provided with groove, described spool is positioned at groove and is rotationally connected with workbench, on described workbench, side is provided with leading screw, opposite side is provided with the vertical rod parallel with leading screw, described elevating lever one end is connected with threads of lead screw, the other end is connected with sliding part, described sliding part is slidably connected with vertical rod, described workbench is provided with motor, described motor output end is connected with worm screw, described worm gear is connected with leading screw one end, described worm and wheel connects.
Operation principle of the present utility model and have the beneficial effect that when projection screen does not uses that its volume, on spool, so carries more convenient.When needs use projection screen, starting motor, driven by motor worm screw rotates, and worm screw drives worm gear wheel, drives screw turns further.Again because elevating lever one end is connected with threads of lead screw, then during screw turns, elevating lever rises along leading screw.The elevating lever other end is slidably connected with vertical rod by sliding part, and during screw turns, sliding part rises along vertical rod, makes elevating lever holding level.Again because elevating lever is connected with projection screen, then in elevating lever uphill process, pulling projection screen, spool rotates, and projection screen is drawn out.This utility model is driven by a single shaft motor, saves the energy and improves work efficiency.When need not use projection screen, making motor reversal, screw turns make elevating lever decline can pack up projection screen.This utility model need not additionally build other supporters in use, easy to use.
Preferred version one: based on the preferred version of scheme, also include controller and travel switch, described travel switch is positioned on leading screw and can coordinate with elevating lever, described motor and travel switch are all electrically connected with the controller, trigger travel switch when elevating lever rises, travel switch transmits signals to controller, and controller controls motor stalls, realization automatically controls, and when motor can be avoided to rotate, projection screen is pulled bad always.
Preferred version two: the preferably preferred version of, described workbench has universal wheel, and universal wheel is convenient to be moved this projection screen.
Preferred version three: the preferably preferred version of two, described motor is servomotor, and servomotor can preferably control motor speed and corner, and compared with common electric machine, can be with frequent starting, service life is longer.
Preferred version four: the preferably preferred version of three, described workbench is provided with chute, and described vertical rod is connected with slide, moves vertical rod along chute, can install the projection screen of different in width.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model projection screen embodiment.
Detailed description of the invention
Below by detailed description of the invention, this utility model is described in further detail:
Reference in Figure of description includes: workbench 10, motor 20, worm screw 21, worm gear 22, leading screw 30, spool 40, projection screen 41, vertical rod 50, elevating lever 60, travel switch 70.
Embodiment is the most as shown in Figure 1: a kind of projection screen, the projection screen 41 on spool 40 including spool 40 and volume, also include workbench 10, sliding part, worm gear 22, worm screw 21 and elevating lever 60, workbench 10 is provided with groove, spool 40 is positioned at groove and is rotationally connected with workbench 10, on workbench 10, side is provided with leading screw 30, opposite side is provided with the vertical rod 50 parallel with leading screw 30, threaded with leading screw 30 in elevating lever 60 one end, the other end is connected with sliding part, sliding part is slidably connected with vertical rod 50, workbench 10 is provided with motor 20, motor 20 outfan is connected with worm screw 21, worm gear 22 is connected with leading screw 30 one end, worm screw 21 is connected with worm gear 22.
This projection screen also includes controller and travel switch 70, and travel switch 70 is positioned on leading screw 30 and can coordinate with elevating lever 60.Controller is PLC, motor 20 and travel switch 70 all electrically connect with PLC, travel switch 70 is triggered when elevating lever 60 rises, travel switch 70 transmits signals to controller, controller controls motor 20 and stops operating, realization automatically controls, and when motor 20 can be avoided to rotate, projection screen 41 is pulled bad always.Workbench 10 has universal wheel, and universal wheel is convenient to be moved this projection screen.Motor 20 is servomotor, and servomotor can preferably control motor 20 rotating speed and corner, and compared with common electric machine 20, can be with frequent starting, service life is longer.Workbench 10 is provided with chute, and vertical rod 50 is connected with slide, moves vertical rod 50 along chute, can install the projection screen 41 of different in width.
When projection screen 41 does not uses, its volume is on spool 40, so carries more convenient.When needs use projection screen, starting motor 20, motor 20 drives worm screw 21 to rotate, and drives leading screw 30 to rotate further.Again because threadeding with leading screw 30 in elevating lever 60 one end, then, in leading screw 30 rotation process, elevating lever 60 rises along leading screw 30.Elevating lever 60 other end is slidably connected with vertical rod 50 by sliding part, and in leading screw 30 rotation process, sliding part rises along vertical rod 50, makes elevating lever 60 holding level.Again because elevating lever 60 is connected with projection screen 41, then, in elevating lever 60 uphill process, pulling projection screen 41, spool 40 to rotate, projection screen 41 is drawn out.This utility model is driven by a single shaft motor, saves the energy and improves work efficiency.When need not use projection screen, making motor 20 invert, leading screw 30 rotates and makes elevating lever 60 decline to be packed up by projection screen 41.This utility model need not additionally build other supporters in use, easy to use.
Above-described is only embodiment of the present utility model, and in scheme, the known general knowledge such as concrete structure and characteristic too much describes at this.Should be understood that; for a person skilled in the art, on the premise of without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. records the content that may be used for explaining claim.
Claims (5)
1. a projection screen, the projection screen on spool including spool and volume, it is characterized in that, also include workbench, worm gear, worm screw, sliding part and elevating lever, described workbench is provided with groove, described spool is positioned at groove and is rotationally connected with workbench, on described workbench, side is provided with leading screw, opposite side is provided with the vertical rod parallel with leading screw, described elevating lever one end is connected with threads of lead screw, the other end is connected with sliding part, described sliding part is slidably connected with vertical rod, described workbench is provided with motor, described motor output end is connected with worm screw, described worm gear is connected with leading screw one end, described worm and wheel connects.
Projection screen the most according to claim 1, it is characterised in that also including that controller and travel switch, described travel switch are positioned on leading screw and can coordinate with elevating lever, described motor and travel switch are all electrically connected with the controller.
Projection screen the most according to claim 2, it is characterised in that described workbench has universal wheel.
Projection screen the most according to claim 3, it is characterised in that described motor is servomotor.
Projection screen the most according to claim 4, it is characterised in that described workbench is provided with chute, described vertical rod is connected with slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521044749.2U CN205656418U (en) | 2015-12-15 | 2015-12-15 | Projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521044749.2U CN205656418U (en) | 2015-12-15 | 2015-12-15 | Projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656418U true CN205656418U (en) | 2016-10-19 |
Family
ID=57355225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521044749.2U Expired - Fee Related CN205656418U (en) | 2015-12-15 | 2015-12-15 | Projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205656418U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230763A (en) * | 2017-12-29 | 2018-06-29 | 南京惊兰谷根自动化科技有限公司 | A kind of multimedia teaching facility |
| CN108230764A (en) * | 2017-12-29 | 2018-06-29 | 南京惊兰谷根自动化科技有限公司 | A kind of multimedia teaching facility of adjustable angle |
| WO2021068704A1 (en) * | 2019-10-08 | 2021-04-15 | 江苏舜合物联网科技有限公司 | Rollable hidden laser television all-in-one machine |
| WO2021189352A1 (en) * | 2020-03-26 | 2021-09-30 | 京东方科技集团股份有限公司 | Display assembly and vehicle having same |
-
2015
- 2015-12-15 CN CN201521044749.2U patent/CN205656418U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230763A (en) * | 2017-12-29 | 2018-06-29 | 南京惊兰谷根自动化科技有限公司 | A kind of multimedia teaching facility |
| CN108230764A (en) * | 2017-12-29 | 2018-06-29 | 南京惊兰谷根自动化科技有限公司 | A kind of multimedia teaching facility of adjustable angle |
| WO2021068704A1 (en) * | 2019-10-08 | 2021-04-15 | 江苏舜合物联网科技有限公司 | Rollable hidden laser television all-in-one machine |
| WO2021189352A1 (en) * | 2020-03-26 | 2021-09-30 | 京东方科技集团股份有限公司 | Display assembly and vehicle having same |
| CN113727885A (en) * | 2020-03-26 | 2021-11-30 | 京东方科技集团股份有限公司 | Display assembly and vehicle with same |
| US11778762B2 (en) | 2020-03-26 | 2023-10-03 | Boe Technology Group Co., Ltd. | Display assembly and vehicle having the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171025 Address after: 401220 1-14-5, 8 Taoyuan Avenue, ferry street, Changshou District, Chongqing Patentee after: Chongqing Yu Chen culture and Education Development Co., Ltd. Address before: 400020 Jiangbei District, Chongqing Jialing Village No. 1, 41, 16-5 Patentee before: CHONGQING COOPO SCIENCE & TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20171215 |