Projection arc curtain tensioning device
A tensioning device and a curved screen technology, applied in the field of curtains, can solve problems such as poor flatness of projection curved screen deployment, and achieve the effects of simple structure, improved flatness of deployment, and convenient installation and maintenance.
Active Publication Date: 2016-09-28
张家港宝视特影视器材有限公司
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Problems solved by technology
When the projection curved screen is unfolded, the counterweight pull rod will tighten the projection screen in the vertical direction under the action of its own weight, but the counterweight pull rod can only exert vertical pulling force on the projection screen, but cannot exert lateral pulling force on the projection screen , leading to the disadvantages of poor flatness in the currently used projection arc screen
Method used
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the projection arc screen tensioning device includes a projection screen 3 located between the screen reel 1 and the counterweight rod 2, and an end sleeve 4 is respectively sleeved on both sides of the counterweight rod 2, Grooves 5 are respectively provided on the outer wall of each end sleeve 4, and through holes 6 communicating with the inside of the corresponding end sleeve 4 are respectively provided at the center of the groove bottom of each groove 5, and on the top of each end sleeve 4, respectively A wire hole 7 communicating with the inside of the corresponding end sleeve 4 is provided, and a wire-receiving adjustment seat 8 is respectively inserted in the groove 5 of each end sleeve 4, and each wire-receiving ad...
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The invention discloses a projection arc curtain tensioning device, comprising a projection curtain between a curtain scroll and a balancing pull rod, wherein an end sleeve is separately sleeved at two side ends of the balancing pull rod, a groove is formed in the outer wall of each end sleeve, a through hole is formed in the center of the bottom of each groove, a stay hole is formed at the top of each end sleeve, a take-up adjusting seat is inserted into the groove of each end sleeve, a bobbin which can be inserted into the corresponding end sleeve from the through hole is arranged on each take-up adjusting seat, and each take-up adjusting seat is limited and fixed with the corresponding end sleeve via a limiting and fixing mechanism; a plurality of pull rings are arranged on two sides of the projection curtain, a stay is separately arranged on two sides of the projection curtain, the upper end of each stay is connected with the curtain scroll, and the lower end of each stay penetrates through the pull rings on the same side and then is connected with the corresponding bobbin; and when the two bobbins simultaneously rotate to tighten the corresponding stays, the two stays can transversely and oppositely pull the projection curtain to tighten and level off the projection curtain. The device has the advantage of high spread flatness of the projection curtain.
Description
technical field [0001] The invention relates to the technical field of curtains, in particular to a projection arc screen tensioning device used for tensioning and flattening the unfolded projection arc screen as a whole. Background technique [0002] The structure of the currently used projection curved screen is as follows: it includes a projection screen storage box, a rotatable screen reel is movably supported in the projection screen storage box, the upper end of the projection screen is connected with the screen reel, and the lower end of the projection screen is extended A counterweight pull rod is fixed behind the projection screen storage box. When the projection curved screen is unfolded, the counterweight pull rod will tighten the projection screen in the vertical direction under the action of its own weight, but the counterweight pull rod can only exert vertical pulling force on the projection screen, but cannot exert lateral pulling force on the projection scree...
Claims
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Login to View More IPC IPC(8): G03B21/56
CPCG03B21/56
Inventor 陈浩陶文华姜茂忠薛程
Owner 张家港宝视特影视器材有限公司