CN105974724B - Project arc curtain tensioning apparatus - Google Patents
Project arc curtain tensioning apparatus Download PDFInfo
- Publication number
- CN105974724B CN105974724B CN201610513525.4A CN201610513525A CN105974724B CN 105974724 B CN105974724 B CN 105974724B CN 201610513525 A CN201610513525 A CN 201610513525A CN 105974724 B CN105974724 B CN 105974724B
- Authority
- CN
- China
- Prior art keywords
- take
- adjustment seat
- projection screen
- bracing wire
- end set
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention discloses projection arc curtain tensioning apparatus, including the projection screen between curtain spool and counterweight pull bar, the both side ends of counterweight pull bar are arranged with an end set respectively, set up separately on the lateral wall of each end set fluted, the bottom land center punishment of each groove is provided with through hole, the top of each end set is provided with and bracing wire hole, take-up adjustment seat is inserted with respectively in the groove of each end set, the spool that can be inserted from through hole in corresponding end set is arranged with each take-up adjustment seat, each take-up adjustment seat covers mutually spacing fixation by limiting fixing mechanism and corresponding end；The both sides side of projection screen is provided with some draw rings, and projection screen both sides are arranged with bracing wire, and every bracing wire upper end is connected with curtain spool, lower end is connected after passing through homonymy draw ring with corresponding spool；When two spools, which rotate, tightens up corresponding bracing wire simultaneously, projection screen laterally can be tightened and evened up to drawing projection screen by two bracing wires.The present invention has the advantages of projection screen expansion flatness is high.
Description
Technical field
The present invention relates to curtain technical field, and in particular to for the projection arc curtain after expansion integrally to be tightened into what is evened up
Project arc curtain tensioning apparatus.
Background technology
The structure of projection arc curtain is used at present：Including projection screen receiver, in projection screen receiver
Expansion bearing has rotatable curtain spool, and the upper end of projection screen is connected with curtain spool, the lower end activity of projection screen
Counterweight pull bar is fixed with after stretching out projection screen receiver.The expansion of arc curtain is projected in use, counterweight pull bar is under Gravitative Loads
Projection screen can be tensed in vertical direction, but counterweight pull bar can only apply the pulling force of vertical direction to projection screen, and can not
Projection screen is applied laterally to the tractive force of drawing, cause current used projection arc curtain expansion poor flatness etc. to be present scarce
Point.
The content of the invention
It is an object of the invention to provide a kind of projection arc curtain tensioning apparatus that can improve projection screen expansion flatness.
To achieve the above object, present invention employs following technical scheme：Described projection arc curtain tensioning apparatus, including
Projection screen between curtain spool and counterweight pull bar, an end set is arranged with respectively in the both side ends of counterweight pull bar,
Groove is respectively arranged with the lateral wall of each end set, connection corresponding end is respectively arranged with the bottom land center of each groove
Through hole inside set, the bracing wire hole being connected with inside corresponding end set is respectively arranged with the top of each end set, at each end
Take-up adjustment seat is inserted with the groove of set respectively, being respectively arranged with each take-up adjustment seat can be corresponding from corresponding through hole insertion
Spool inside the set of end, each take-up adjustment seat cover mutually spacing fixation by limiting fixing mechanism and corresponding end respectively；Throwing
Some draw rings are arranged at intervals with from up to down respectively on the both sides side of shadow curtain, are also respectively provided with the both sides of projection screen
Bracing wire, the upper end of every bracing wire are connected with curtain spool, and the lower end of every bracing wire passes through after sequentially passing through all draw rings of homonymy
Corresponding end set inside is stretched into the bracing wire hole that side is put and is connected with the spool inside corresponding end set；When two spirals
Axle rotates simultaneously under the drive of corresponding take-up adjustment seat when tightening up corresponding bracing wire, two bracing wires can laterally to drawing projection screen and
Projection screen is tightened and evened up.
Further, foregoing projection arc curtain tensioning apparatus, wherein：The structure of described limiting fixing mechanism is：
A circle ratchet slot is provided with the inner peripheral wall of end set upper groove, socket is provided with take-up adjustment seat, it is movable in socket
Spacing plug is inserted with, limited location ratchet is set on spacing plug, spring is provided between spacing plug and take-up adjustment seat,
Spacing plug have all the time under the outside elastic force effect of spring move radially outward to its spacing ratchet be inserted in ratchet slot and
Make take-up adjustment seat and end set mutually fixed trend, and when press inward against spacing plug, make spacing plug overcome spring to
When outer displaced radially inward to the spacing ratchet of elastic force leaves ratchet slot, spacing plug will not interfere with the rotation of take-up adjustment seat.
Further, foregoing projection arc curtain tensioning apparatus, wherein：Radially-directed is provided with take-up adjustment seat
Hole, the guide rod that can insert radially-directed hole is provided with spacing plug, spacing plug is by being directed to bar activity insertion footpath
Spacing plug is moved radially with respect to take-up adjustment seat into pilot hole and can not move axially, spring is set in spacing
On guide rod between plug and take-up adjustment seat.
Further, foregoing projection arc curtain tensioning apparatus, wherein：It is provided with the spool inside the set of end
Bracing wire mounting hole.
The implementation of Pass through above-mentioned technical proposal, the beneficial effects of the invention are as follows：It is simple in construction, it is convenient to install and maintain, not only
The pulling force of vertical direction can be applied to projection screen, and projection screen can be applied laterally to the tractive force of drawing, so that exhibition
Projection screen after opening can be evened up by overall tighten, and substantially increase the expansion flatness of projection screen.
Brief description of the drawings
Fig. 1 is the structural representation of projection arc curtain tensioning apparatus of the present invention.
Fig. 2 is the structural representation in Fig. 1 left view direction.
Fig. 3 is the structural representation of the B-B sections shown in Fig. 2.
Fig. 4 is the structural representation of the A-A sections shown in Fig. 1.
Fig. 5 is the enlarged diagram at the H positions shown in Fig. 4.
Fig. 6 is the dimensional structure diagram of the take-up adjustment seat shown in Fig. 1.
Fig. 7 is the dimensional structure diagram of the spacing plug shown in Fig. 1.
Fig. 8 is the dimensional structure diagram of the end set shown in Fig. 1.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, described projection arc curtain tensioning apparatus, including position
Projection screen 3 between curtain spool 1 and counterweight pull bar 2, an end set is arranged with respectively in the both side ends of counterweight pull bar 2
4, covered at each end on 4 lateral walls and be respectively arranged with groove 5, connection pair is respectively arranged with the bottom land center of each groove 5
The through hole 6 inside set 4 should be held, the bracing wire hole 7 being connected with inside corresponding end set 4 is respectively arranged with the top of each end set 4,
Take-up adjustment seat 8 is inserted with respectively in the groove 5 of each end set 4, and being respectively arranged with each take-up adjustment seat 8 can be from correspondingly
The spool 9 that through hole 6 is inserted inside corresponding end set 4, each take-up adjustment seat 8 pass through limiting fixing mechanism and corresponding end set respectively
4 mutually spacing fixations；Some draw rings 10 are arranged at intervals with from up to down respectively on the both sides side of projection screen 3, in projection screen
The both sides of cloth 3 are also respectively provided with bracing wire 11, and the upper end of every bracing wire 11 is connected with curtain spool 1, under every bracing wire 11
End sequentially pass through pass through after all draw rings 10 of homonymy stretched into the bracing wire hole 7 on side set 4 inside corresponding end set 4 and with it is corresponding
Spool 9 inside end set 4 is connected；Tightened up pair when being rotated under drive of two spools 9 in corresponding take-up adjustment seat 8 simultaneously
When answering bracing wire 11, projection screen 3 laterally can be tightened and evened up to drawing projection screen 3 by two bracing wires 11；In the present embodiment, institute
The structure for the limiting fixing mechanism stated is：A circle ratchet slot 12 is provided with the inner peripheral wall of end 4 upper grooves 5 of set, in take-up
Socket 13 is provided with adjustment seat 8, in socket 13 activity be inserted with spacing plug 14, on spacing plug 14 set limited location spine
Pawl 15, is provided with spring 16 between spacing plug 14 and take-up adjustment seat 8, and spacing plug 14 is made in the outside elastic force of spring 16
Have to move radially outward to its spacing ratchet 15 all the time under and be inserted in ratchet slot 12 and take-up adjustment seat 8 is covered 4 phases with end
Fixed trend, and when pressing inward against spacing plug 14, spacing plug 14 is overcome the outside elastic force of spring 16 radially
When being moved to spacing ratchet 15 and leaving ratchet slot 13, spacing plug 14 will not interfere with take-up adjustment seat 8 and rotate, above-mentioned spacing solid
It is simple to determine mechanism structure, dismounting is easy to maintenance；In the present embodiment, radially-directed hole 17 is provided with take-up adjustment seat 8,
The guide rod 18 in radially-directed hole 17 can be inserted by being provided with spacing plug 14, and spacing plug 14 is inserted by being directed to the activity of bar 18
Enter in radially-directed hole 17 and spacing plug 14 is moved radially with respect to take-up adjustment seat 8 and can not move axially, spring
16 are set on the guide rod between spacing plug 14 and take-up adjustment seat 8, can so improve the stability of spacing plug 14,
And then improve the operation stability of equipment；In the present embodiment, bracing wire peace is provided with the spool 9 inside end set 4
Hole 19 is filled, so preferably bracing wire can be fastened on spool, installation is more convenient；
The operation principle of the present invention is as follows：
After projection screen 3 deploys, counterweight pull bar 2 can pull flattening projection screen in vertical direction under Gravitative Loads
3, two take-up adjustment seats 8 are then rotated, the synchronous drive spool 9 of take-up adjustment seat 8 is rotated and tightens up corresponding bracing wire 11, this
When, two bracing wires 11 can be laterally to drawing projection screen 3, so as in laterally pulled flattening projection screen 3, so as to by the throwing after expansion
Shadow curtain, which is integrally tightened, evens up, and substantially increases the expansion flatness of projection screen.It is an advantage of the invention that：It is simple in construction, peace
Fill it is easy to maintenance, can not only to projection screen apply vertical direction pulling force, and can to projection screen apply laterally to drawing
Tractive force, so that the projection screen after expansion can be evened up by overall tighten, substantially increase the expansion flatness of projection screen.
Claims (3)
1. arc curtain tensioning apparatus is projected, including the projection screen between curtain spool and counterweight pull bar, it is characterised in that：
An end set is arranged with respectively in the both side ends of counterweight pull bar, and groove is respectively arranged with the lateral wall of each end set,
The through hole being respectively arranged with the bottom land center of each groove inside connection corresponding end set, at each end, the top of set is set respectively
There is the bracing wire hole being connected with corresponding end set inside, take-up adjustment seat is inserted with respectively in the groove of each end set, in each receipts
Being respectively arranged with line adjustment seat can lead to respectively from the spool inside corresponding through hole insertion corresponding end set, each take-up adjustment seat
Cross limiting fixing mechanism and cover mutually spacing fixation with corresponding end；It is arranged at intervals from up to down respectively on the both sides side of projection screen
There are some draw rings, bracing wire is also respectively provided with the both sides of projection screen, the upper end of every bracing wire is connected with curtain spool, often
The lower end of root bracing wire sequentially pass through pass through after all draw rings of homonymy with the bracing wire hole that side is put stretch into corresponding end set it is internal and with
Spool inside corresponding end set is connected；Tightened up pair when being rotated under drive of two spools in corresponding take-up adjustment seat simultaneously
When answering bracing wire, projection screen laterally can be tightened and evened up to drawing projection screen by two bracing wires, described limiting fixing mechanism
Structure is：A circle ratchet slot is provided with the inner peripheral wall of end set upper groove, socket is provided with take-up adjustment seat, is being inserted
Activity is inserted with spacing plug in mouthful, and limited location ratchet is set on spacing plug, is set between spacing plug and take-up adjustment seat
Spring is equipped with, spacing plug has to move radially outward to its spacing ratchet all the time under the outside elastic force effect of spring is inserted in spine
The trend for making take-up adjustment seat mutually be fixed with end set in teeth groove, and when pressing inward against spacing plug, overcome spacing plug
When displaced radially inward to the spacing ratchet of outside elastic force of spring leaves ratchet slot, spacing plug will not interfere with take-up adjustment seat
Rotate.
2. projection arc curtain tensioning apparatus according to claim 1, it is characterised in that：Footpath is provided with take-up adjustment seat
To pilot hole, the guide rod that can insert radially-directed hole is provided with spacing plug, spacing plug is by being directed to bar activity
Spacing plug is moved radially with respect to take-up adjustment seat in insertion radially-directed hole and can not move axially, spring is arranged
On guide rod between spacing plug and take-up adjustment seat.
3. projection arc curtain tensioning apparatus according to claim 1, it is characterised in that：In the spool inside the set of end
On be provided with bracing wire mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513525.4A CN105974724B (en) | 2016-07-04 | 2016-07-04 | Project arc curtain tensioning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513525.4A CN105974724B (en) | 2016-07-04 | 2016-07-04 | Project arc curtain tensioning apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105974724A CN105974724A (en) | 2016-09-28 |
| CN105974724B true CN105974724B (en) | 2018-04-06 |
Family
ID=56954282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513525.4A Active CN105974724B (en) | 2016-07-04 | 2016-07-04 | Project arc curtain tensioning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105974724B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527033A (en) * | 2016-12-19 | 2017-03-22 | 李业清 | Windproof and dustproof reel screen |
| CN106773501A (en) * | 2016-12-19 | 2017-05-31 | 李业清 | Horizontally adjustable windproof floating projection screen |
| CN108331381B (en) * | 2018-01-25 | 2020-03-13 | 江苏省建筑工程集团有限公司 | Multifunctional conference hall |
| CN111361492B (en) * | 2018-12-25 | 2023-05-09 | 孔维 | Film curtain overspeed device tensioner |
| CN109727556A (en) * | 2019-01-02 | 2019-05-07 | 哈尔滨工业大学 | A kind of space representation device |
| CN110850672B (en) * | 2019-11-21 | 2021-07-13 | 亿立影视科技(惠州)有限公司 | Projection curtain cloth leveling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006077083A1 (en) * | 2005-01-21 | 2006-07-27 | Adeo Group S.P.A. | Projection screen with tensioning mechanism |
| CN201021971Y (en) * | 2007-03-12 | 2008-02-13 | 广州美视晶莹银幕有限公司 | Pull line projection screen |
| CN201222160Y (en) * | 2008-06-19 | 2009-04-15 | 无锡信诺视听设备有限公司 | Silver screen with handwheel adjusting device |
| CN201281799Y (en) * | 2008-10-24 | 2009-07-29 | 极品影视设备科技(深圳)有限公司 | Projection screen |
| CN201876658U (en) * | 2010-07-21 | 2011-06-22 | 何荫理 | Curtain tensioning device |
| CN205910486U (en) * | 2016-07-04 | 2017-01-25 | 张家港宝视特影视器材有限公司 | Projection arc curtain overspeed device tensioner |
-
2016
- 2016-07-04 CN CN201610513525.4A patent/CN105974724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006077083A1 (en) * | 2005-01-21 | 2006-07-27 | Adeo Group S.P.A. | Projection screen with tensioning mechanism |
| CN201021971Y (en) * | 2007-03-12 | 2008-02-13 | 广州美视晶莹银幕有限公司 | Pull line projection screen |
| CN201222160Y (en) * | 2008-06-19 | 2009-04-15 | 无锡信诺视听设备有限公司 | Silver screen with handwheel adjusting device |
| CN201281799Y (en) * | 2008-10-24 | 2009-07-29 | 极品影视设备科技(深圳)有限公司 | Projection screen |
| CN201876658U (en) * | 2010-07-21 | 2011-06-22 | 何荫理 | Curtain tensioning device |
| CN205910486U (en) * | 2016-07-04 | 2017-01-25 | 张家港宝视特影视器材有限公司 | Projection arc curtain overspeed device tensioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105974724A (en) | 2016-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105974724B (en) | Project arc curtain tensioning apparatus | |
| CN104078892B (en) | The small-sized laying apparatu of power cable | |
| CN104270926B (en) | The framework of LED display | |
| CN102767328B (en) | Torsion batches differential speed type awning curtain, roller shutter | |
| CN205910486U (en) | Projection arc curtain overspeed device tensioner | |
| KR101502754B1 (en) | Tensioning device | |
| CN209291681U (en) | A kind of yarn tube fixing device of doubling frame | |
| CN105356399B (en) | Roll bicyclic card wire structure | |
| CN204490206U (en) | Line taking device | |
| CN110713069B (en) | Power line lays portable pencil tight line instrument | |
| CN203932845U (en) | The small-sized laying apparatu of power cable | |
| CN202039708U (en) | Tension device for a door window | |
| CN108963857B (en) | 10kV overhead line combined type limiting and insulating device and using method thereof | |
| CN206442052U (en) | A kind of super-pressure and UHV transmission line change conductor spacer portable aid | |
| CN113410032B (en) | On-site construction method for power distribution cabinet of dry-type transformer | |
| CN205820576U (en) | A kind of adjustable inflatable textile bobbin | |
| CN211338306U (en) | Core-spun yarn drafting and tension stabilizing device | |
| KR102123446B1 (en) | Device for ascending and descending of the stageestablishment | |
| CN203638870U (en) | Yarn coiling device for Tujia brocade weaving | |
| CN206343742U (en) | A kind of wire reel | |
| CN205128804U (en) | Activity direction formula door leaf skeleton woven wire twines auxiliary device | |
| CN205692632U (en) | A kind of thread supplying machine structure on mobile phone tramline strand winder | |
| CN211135321U (en) | Steel strand stranding device | |
| CN208648401U (en) | The tube device of weaving loom | |
| CN203954546U (en) | A kind of dumbbell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |