Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ground lifting projection screen

A technology of projection screen and floor, which is applied in the direction of optics, instruments, projection devices, etc., can solve the problems of large structure volume, high requirements for support material strength, heavy weight, etc., and achieve the effect of small volume, simple structure and convenient use

Inactive Publication Date: 2012-05-16
崔定楠
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage is that because of the use of strong gas springs, the strength requirements for the bracket material are high
And the structure itself is bulky and heavy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ground lifting projection screen
  • Ground lifting projection screen
  • Ground lifting projection screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Such as figure 1 As shown, the floor-mounted projection screen includes a pull rod 10, a foldable bracket 20, a driving force module 30, a limit module 40, a T-shaped steering gear box 50, a synchronization lever 60, a rotating tube 70, a housing 80, a torsion spring 90, Bearing 100, curtain 110.

[0028] There is a rotating tube 70 in the casing 80, and a synchronous rod 60 is arranged in the rotating tube 70. The rotating tube 70 is coaxially supported on the synchronization rod 60 through the bearings 100 at both ends.

[0029] The two ends of the casing 80 are symmetrically installed with the gear box 50 . Both ends of the synchronization rod 60 are fixedly connected to the X axes of the two gearboxes 50 , so that the X axes of the two gearboxes 50 are synchronized.

[0030] A torsion spring 90 of a certain length is wound around the synchronization rod 60 . One end of the torsion spring 90 is fixed on the synchronization rod 60 , and the other end is fixed on t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a ground lifting projection screen, which has the characteristics of simple structure, small volume and the like. The upper end of a curtain is taken up by a pull rod, and the lower end of the curtain is taken up with a winding pipe; a synchronous rod passes through the winding pipe, and the winding pipe is supported on the synchronous rod via a bearing; a torsion spring is arranged between the winding pipe and the synchronous rod so that the curtain is tensioned between the pull rod and the winding pipe; two T-shaped steering gear cases are symmetrically arranged at two ends of the synchronous rod; X-axes of the T-shaped steering gear cases are connected to the ends of the adjacent synchronous rod; each foldable support is formed by hinging at least two rods, the two foldable supports are symmetrically arranged on two sides of the curtain, a lower rod of each foldable support is connected with a Y-axis of each adjacent T-shaped steering gear case, and upper rods of the foldable supports are connected with the pull rod; limiting modules are arranged on two sides of the curtain and correlated with the adjacent foldable supports so that the foldable supports are kept at spread positions after the foldable supports rotate to extreme positions; and the X-axes and the Y-axes are perpendicular to each other spatially.

Description

technical field [0001] The invention relates to a floor-mounted lifting projection screen. Background technique [0002] The image projected by the projector is finally imaged by the projection screen. Projection screens can be divided into many types due to their structural characteristics. Among them, the pneumatic floor curtain is more common in the market because it is easy to store and carry, and it is more convenient to use. [0003] The pneumatic curtain is mainly composed of upper cover, lower box, rotating tube, curtain, pull rod, scissors bracket structure, gas spring and so on. When not in use, the revolving tube, pull rod and scissors support structure of the rolled up curtain are all stored in the lower box, and the upper cover can be closed and can be stored and carried conveniently. [0004] When in use, manually pull up the pull bar after opening the upper cover. Under the boosting action of the thrust released by the gas spring in the scissors support st...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G03B21/58F16M11/38
Inventor 崔定楠
Owner 崔定楠
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com