CN104360577B

CN104360577B - Integral foldable framework projection screen

Info

Publication number: CN104360577B
Application number: CN201410736679.0A
Authority: CN
Inventors: 窦志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-08
Filing date: 2014-12-08
Publication date: 2016-06-22
Anticipated expiration: 2034-12-08
Also published as: CN104360577A

Abstract

One Integral foldable framework projection screen of the present invention, it includes curtain and spool, it is characterized in: also include framework, described framework is made up of two root length frames, four short frames and six pinless hinge, it is built in pinless hinge between long margin frame and short frame to be fixed on the tube wall of the long margin frame inside framework and short frame respectively through the connecting rod of pinless hinge rotation dish, is built in pinless hinge between two short frames and is fixed on the tube wall of two short frames outside framework respectively through the connecting rod of pinless hinge rotation dish；Two groups of electric magnet are respectively fixedly connected with the termination at short frame；Being respectively fixedly connected with bearing at the two ends at the back side of framework, long margin frame, at least one spool is placed between the bearing that long margin frame two ends are arranged and is connected；Curtain is placed between framework and spool, and the both sides of curtain are connected with the spool being connected on long margin frame or long margin frame respectively, and two groups of magnetic stripes are respectively placed between short frame and the curtain of the other both sides of curtain, framework and are connected。

Description

Integral foldable framework projection screen

Technical field

The present invention relates to projection screen, be a kind of Integral foldable framework projection screen。

Background technology

Projection screen is used in film, office, home theater and convention occasion for showing the instrument of image, video file。Projection screen of a great variety, for handling official business, the projection screen of home theater and convention occasion in the majority with screen of dynamoelectric projection and framework projection screen。Screen of dynamoelectric projection adopts spool rolling structure, and after having retracting, volume is little, furl the advantages such as convenience, the easily maintenance of curtain face, but because of four limit unbalance stress, easily occurs that V-type stricture of vagina, water ripples, curtain face injustice and edge are straight and are difficult to the shortcomings such as reparation after using。Framework projection screen is formed framework by section bar is fixing, framework arranges spring carrier arm or pulling buckle, curtain is fixed on framework by spring carrier arm or pulling buckle, framework projection screen is because adopting the fixing curtain of framework, there is four limit uniform force, flatness advantage good, on-deformable, but there is also that area is more easy to store, curtain face is easy to be dirty easily aging and the shortcoming such as surrounding enviroment inaccurate coordination；Also have and adopt some parts to carry out assembling, mounting again the structure of curtain framework projection screen, shortcoming is that the framework assembled needs screw thread fix and unsightly, curtain and framework split are not portable。

Summary of the invention

The technical problem to be solved is: the shortcoming overcoming prior art, a kind of Integral foldable framework projection screen is provided, framework and curtain can be folded into minimum volume simultaneously, and framework and curtain are fixed with one, floor space is little, and the structure that framework and curtain are fixed with one is beneficial to carries and collect。

This invention address that the scheme of technical problem is: a kind of Integral foldable framework projection screen, it includes curtain and spool, it is characterized in that: also include framework, described framework is made up of two root length frames, four short frames and six pinless hinge, long margin frame and short frame are rectangular tube, two root length frames and four short frames replace symmetry arrangement successively and constitute rectangular frame, and six pinless hinge are built in respectively between adjacent frame and are connected；The termination that electric magnet is respectively fixedly connected with at adjacent two short frames is corresponding with pinless hinge；Being respectively fixedly connected with bearing at the two ends at the back side of framework, long margin frame, at least one spool is placed between the bearing that long margin frame two ends are arranged and is connected；Curtain is placed between framework and spool, and the both sides of curtain are connected with the spool being connected on long margin frame or long margin frame respectively, and two groups of magnetic stripes are respectively placed between short frame and the curtain of the other both sides of curtain, framework and are connected。

The structure of described pinless hinge is: it includes body and rotation dish, described body is in the arc-shaped less than 180 °, the convex side of body and concave side block respectively, internal several chambers are set, one end radial-plugging of n-th chamber, the other end radial-plugging of N+1 chamber, in the chamber of body, slide block is set, rotation dish is similar to shape, the convex side of one end is radially arranged connecting rod, rotation dish arranges the chute of arc, rotation dish is built in the chamber of body, link is positioned at the outside of body, slide block is placed in the chute of rotation dish and is slidably connected, it is built in pinless hinge between long margin frame and short frame and is fixed on the tube wall of the long margin frame inside framework and short frame respectively through the connecting rod of pinless hinge rotation dish, it is built in pinless hinge between two short frames to be fixed on the tube wall of two short frames outside framework respectively through the connecting rod of pinless hinge rotation dish。

It is positioned at the built-in balancing weight of long margin frame of base of frame。

Described magnetic stripe is several magnetic piece arranged successively。

The use procedure of Integral foldable framework projection screen of the present invention is: at ordinary times for folded state, when needing to open curtain, it is connected in the spool release curtain on long margin frame bearing, the long margin frame being positioned at framework bottom surface is being conducted oneself with dignity and under the action of gravity of counterweight to bottom offset, folding short frame opens with pinless hinge gradually for the point of rotation, until the short frame of left and right doubling tends to vertical, the electric magnet energising that now two short frame terminations are connected is attracting, make that two short frames are fully deployed becomes vertical frame, the magnetic stripe being placed between framework and curtain is attracting, curtain and framework are completely fitted, thus forming the frame-type projection screen of entirety。When packing up curtain, electric magnet is reversely energized and repels each other, the short frame of left and right doubling is separately, it is connected in the retracting curtain of the spool on long margin frame bearing and drives the long margin frame being positioned at framework bottom surface to move up, fully deployed short frame is packed up with pinless hinge for the point of rotation is folding gradually, until perfectly level, it is in folded state。

Integral foldable framework projection screen of the present invention provides the benefit that: two hinged long margin frames, the framework of four short frames composition framework can be made to be folded to minimum area that area is a long margin frame length × tetra-short frame width, pinless hinge can be in close contact each frame side when framework is folding, each frame end face close contact during expansion, make framework more attractive, spool is beneficial to by bearing and the framework overall projection screen of connected formation and carries, magnetic stripe between framework and curtain makes curtain and framework completely fit, avoid curtain that V-type stricture of vagina occurs, water ripples, the shortcomings such as curtain face is uneven and edge is not straight, after folding retracting, volume is little, four limit uniform force, flatness is good, it is unlikely to deform, there is simple in construction, retracting is convenient, curtain face is easily maintained, the advantage forming stable fixed structure after opening completely。

Accompanying drawing explanation

Fig. 1 is the schematic front view of Integral foldable framework projection screen of the present invention；

Fig. 2 is the schematic top plan view of Fig. 1；

Fig. 3 is the left view schematic diagram of Fig. 1；

Fig. 4 is the schematic front view of Integral foldable framework projection screen folded state of the present invention；

Fig. 5 is the left view schematic diagram of Fig. 4；

Fig. 6 is the pinless hinge schematic front view of Integral foldable framework projection screen of the present invention；

Fig. 7 is the left view schematic diagram of Fig. 6；

Fig. 8 is that the K of Fig. 6 is to schematic diagram；

Fig. 9 is the A-A cross-sectional schematic of Fig. 7；

Figure 10 is the B-B cross-sectional schematic of Fig. 7；

Figure 11 is the pinless hinge closure state schematic front view of Integral foldable framework projection screen of the present invention；

The pinless hinge that Figure 12 is Integral foldable framework projection screen of the present invention opens 90 ° of state schematic front view。

In figure: 1 pinless hinge, 2 short frames, 3 long margin frames, 4 bearings, 5 magnetic stripes, 6 curtains, 7 spools, 8 connecting rods, 9 rotation dishes, 10 chutes, 11 bodies, 12 slide blocks。

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is further described。

With reference to Fig. 1～Figure 12, the present embodiment one Integral foldable framework projection screen, it includes spool 7, curtain 6 and framework, described framework is made up of 3, four short frames 2 of two root length frames and six pinless hinge 1, long margin frame 3 and short frame 2 are rectangular tube, the length of two short frames 2 and replace symmetry arrangement successively constitute rectangular frame less than long margin frame 3, two root length frames 3 and four short frames 2, six pinless hinge 1 are built in respectively between adjacent frame and are connected；Two groups of electric magnet are respectively fixedly connected with in the termination of short frame 2 corresponding with pinless hinge 1；Being respectively fixedly connected with bearing 4 at the two ends at the back side of framework, long margin frame 3, at least one spool 7 is placed between the bearing 4 that long margin frame 3 two ends are arranged and is connected；Curtain 6 is placed between framework and spool 7, and the both sides of curtain 6 are connected with the spool 7 being connected on long margin frame 3 or long margin frame 3 respectively, and two groups of magnetic stripes 5 are respectively placed between short frame 2 and the curtain 6 of the other both sides of curtain 6, framework and are connected。The structure of described pinless hinge 1 is: it includes body 11 and rotation dish 9, described body 11 is in the arc-shaped less than 180 °, the convex side of body 11 and concave side block respectively, several chambers are set in body 11, one end radial-plugging of n-th chamber, the other end radial-plugging of N+1 chamber, slide block 12 is set in the chamber of body 11, rotation dish 9 is similar to body 11 shape, the convex side of one end is radially arranged connecting rod 8, rotation dish 9 arranges the chute 10 of arc, rotation dish 9 is built in the chamber of body 11, link is positioned at the outside of body 11, slide block 12 is placed in the chute 10 of rotation dish 9 and is slidably connected, it is built in pinless hinge 1 between long margin frame 3 and short frame 2 and is fixed on the tube wall of the long margin frame 3 inside framework and short frame 2 respectively through the connecting rod 8 of pinless hinge 1 rotation dish 9, it is built in pinless hinge 1 between two short frames 2 to be fixed on the tube wall of two short frames 2 outside framework respectively through the connecting rod 8 of pinless hinge 1 rotation dish 9。The described built-in balancing weight of long margin frame 3 being positioned at base of frame。Described magnetic stripe 5 is several magnetic piece arranged successively。The present embodiment adopts prior art manufacture, and described spool 7 is the commercially available prod of prior art。

The use procedure of the present embodiment is: at ordinary times for folded state, when needing to open projection screen, the spool 7 being connected on long margin frame 3 bearing 4 discharges curtain 6, the long margin frame 3 being positioned at framework bottom surface is being conducted oneself with dignity and under the action of gravity of counterweight to bottom offset, folding short frame 2 opens with pinless hinge 1 gradually for the point of rotation, until the short frame 2 of left and right doubling tends to vertical, the electric magnet energising that now two short frame 2 terminations are connected is attracting, make that two short frames 2 are fully deployed becomes vertical frame, the magnetic stripe 5 being placed between framework and curtain 6 is attracting, curtain 6 and framework are completely fitted, thus forming the frame-type projection screen of entirety。When needing to pack up projection screen, electric magnet is reversely energized and repels each other, the short frame 2 of left and right doubling is separately, the spool 7 being connected on long margin frame 3 bearing 4 furls curtain 6 and drives the long margin frame 3 being positioned at framework bottom surface to move up, fully deployed short frame 2 is packed up with pinless hinge 1 for the point of rotation is folding gradually, until perfectly level, it is in folded state。

Claims

1. an Integral foldable framework projection screen, it includes curtain and spool, it is characterized in that: also include framework, described framework is made up of two root length frames, four short frames and six pinless hinge, long margin frame and short frame are rectangular tube, two root length frames and four short frames replace symmetry arrangement successively and constitute rectangular frame, and six pinless hinge are built in respectively between adjacent frame and are connected；The termination that electric magnet is respectively fixedly connected with at adjacent two short frames is corresponding with pinless hinge；Being respectively fixedly connected with bearing at the two ends at the back side of framework, long margin frame, at least one spool is placed between the bearing that long margin frame two ends are arranged and is connected；Curtain is placed between framework and spool, and the both sides of curtain are connected with the spool being connected on long margin frame or long margin frame respectively, and two groups of magnetic stripes are respectively placed between short frame and the curtain of the other both sides of curtain, framework and are connected。

2. Integral foldable framework projection screen as claimed in claim 1, it is characterized in that: the structure of described pinless hinge is: it includes body and rotation dish, described body is in the arc-shaped less than 180 °, the convex side of body and concave side block respectively, internal several chambers are set, one end radial-plugging of n-th chamber, the other end radial-plugging of N+1 chamber, in the chamber of body, slide block is set, rotation dish is similar to shape, the convex side of one end is radially arranged connecting rod, rotation dish arranges the chute of arc, rotation dish is built in the chamber of body, link is positioned at the outside of body, slide block is placed in the chute of rotation dish and is slidably connected, it is built in pinless hinge between long margin frame and short frame and is fixed on the tube wall of the long margin frame inside framework and short frame respectively through the connecting rod of pinless hinge rotation dish, it is built in pinless hinge between two short frames to be fixed on the tube wall of two short frames outside framework respectively through the connecting rod of pinless hinge rotation dish。

3. Integral foldable framework projection screen as claimed in claim 1, is characterized in that: be positioned at the built-in balancing weight of long margin frame of base of frame。

4. Integral foldable framework projection screen as claimed in claim 1, is characterized in that: described magnetic stripe is several magnetic piece arranged successively。