CN110456605A - Projection screen equipped with elastic bottom bar assembly - Google Patents
Projection screen equipped with elastic bottom bar assembly Download PDFInfo
- Publication number
- CN110456605A CN110456605A CN201910786398.9A CN201910786398A CN110456605A CN 110456605 A CN110456605 A CN 110456605A CN 201910786398 A CN201910786398 A CN 201910786398A CN 110456605 A CN110456605 A CN 110456605A
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- slotted hole
- elastic
- bottom bar
- bar assembly
- crotch
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- 230000007246 mechanism Effects 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 13
- 230000001771 impaired effect Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses the projection screen for being equipped with elastic bottom bar assembly, bottom frame component is equipped with the first slotted hole, the second slotted hole, third slotted hole and the 4th slotted hole, and the first slotted hole and the second slotted hole are arranged side by side, and third slotted hole and the 4th slotted hole are arranged side by side；First crotch passes through the first slotted hole and is inserted into the second slotted hole, and the second crotch passes through third slotted hole and is inserted into the 4th slotted hole.The utility model has the advantages that the flexible deformation of limited extent can occur between bottom bar component and bottom frame component, so that bottom frame component is bonded with elastic force appropriate and covers opening, the risk of the first elastic foot and the second elastic foot due to deforming excessive and impaired failure can be reduced, be conducive to the stability and durability that improve elastic bottom bar assembly.The hook formation of first crotch and the second crotch advantageously reduces the first elastic foot and the second elastic foot is detached from the risk of bottom frame component.The present invention relates to projection screen equipment.
Description
Technical field
The present invention relates to projection screen equipment, in particular to are equipped with the projection screen of elastic bottom bar assembly.
Background technique
Retractable projection screen generally comprises spool, curtain, bottom bar assembly and shell, and the side of curtain is fixed on spool
Surface, and the other side of curtain is fixed on bottom bar assembly, shell is covered on outside spool, and spool can drive curtain real by rotation
Existing folding and unfolding.When spool packs up curtain completely, curtain coiling is on spool, and bottom bar assembly is bonded with shell.Because of curtain
Material itself has certain elasticity, so the laminating degree between bottom bar assembly and shell will receive the influence of curtain elasticity,
And then make to be easy to appear gap between bottom bar assembly and shell.Gap between bottom bar assembly and shell can make bottom bar assembly and outer
It is loosened between shell, is unfavorable for improving the structural stability of bottom bar assembly, is also unfavorable for being consistent between bottom bar assembly and shell
Appearance.
To solve the technical issues of gap occur between bottom bar assembly and shell, develop in the prior art flexible
Bottom bar assembly.Flexible bottom bar assembly generally comprises the body of rod, elastic mechanism and bottom frame.The side of curtain is fixed on the body of rod
On, elastic mechanism be located between the body of rod and bottom frame and make the spacing of the body of rod and bottom frame can Flexible change, elastic mechanism make bottom frame with
Shell can Elastic Contact, to make to be not easy to occur between bottom frame and shell to loosen and gap.
The technological deficiency of elasticity bottom bar assembly in the prior art is: lacking the elastic deformation level of limitation elastic mechanism
Position-limit mechanism, be easy to make elastic mechanism due to deforming excessive and impaired failure, make elastic mechanism stability and durability compared with
Difference, and there is the risk to fall off under limiting condition in elastic mechanism.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of projection screens equipped with elastic bottom bar assembly, can solve elasticity
Elastic mechanical stability and poor durability in bottom bar assembly are easy due to deforming excessive and impaired failure and elastic mechanism in pole
The technical issues of being easy to fall off under limit state.
Used technical solution to solve above-mentioned technical problem:
Projection screen equipped with elastic bottom bar assembly, including rolling-up mechanism, curtain, shell and elastic bottom bar assembly, winder
Structure is set inside the shell, and shell is equipped with opening, and curtain is reached other than shell by opening, and elastic bottom bar assembly is other than shell
It is connect with curtain；
When rolling-up mechanism packs up curtain, elastic bottom bar assembly is to harness motion and covers opening；
Elastic bottom bar assembly includes bottom bar component and bottom frame component, and one end of curtain is connect with bottom bar component；
Bottom bar component is equipped with the first elastic foot and the second elastic foot, and the first elastic foot and the second elastic foot are respectively to difference
Direction diverge to, the first elastic foot and the second elastic foot can elastic bending, the end of the first elastic foot is formed by bending the first crotch,
The end of second elastic foot is formed by bending the second crotch；
Bottom frame component is equipped with the first slotted hole, the second slotted hole, third slotted hole and the 4th slotted hole, the first slotted hole
It is arranged side by side with the second slotted hole, third slotted hole and the 4th slotted hole are arranged side by side；
First crotch passes through the first slotted hole and is inserted into the second slotted hole, and the second crotch passes through third slotted hole and inserts
Enter into the 4th slotted hole.
As an improvement, bottom bar component further includes the body of rod and several torsional springs, the body of rod is fixed on one end of curtain, the middle part of torsional spring
It is connect with the body of rod, the bending two ends of torsional spring are at the first elastic foot, the second elastic foot, the first crotch and the second crotch.
As an improvement, bottom bar component further includes several bolts, the body of rod is equipped with through slot and through-hole, and through slot is from one end of the body of rod
Through the other end of the body of rod, through-hole runs through the body of rod from the slot bottom of through slot, and the middle part of torsional spring is extend into through slot from through-hole, the first bullet
Property foot and the second elastic foot pass through and through-hole and reach outside the body of rod, bolt torsional spring is passed through out of through slot and make torsional spring rotationally with
Bottom bar connection.
As an improvement, bottom frame component further includes framework and limit plate, the embeddable opening of framework is interior and covers opening, limit plate
It being connect with framework, the first slotted hole, the second slotted hole, third slotted hole and the 4th slotted hole are the through-holes being located on limit plate,
Centre bore is additionally provided on limit plate, the first slotted hole and third slotted hole are connected to centre bore.
As an improvement, framework includes bottom plate, the first vertical plate and the second vertical plate, the first vertical plate and the second vertical plate are erected at bottom plate
On, bottom plate, which can cover, to be open and is bonded with shell, in the first vertical plate and the embeddable opening of the second vertical plate, bottom bar component embeddable the
Between one vertical plate and the second vertical plate.
As an improvement, framework further includes the first flange and the second flange, the first flange be located at the side of the first vertical plate and to
Second vertical plate protrusion, the second flange are located at the side of the second vertical plate and protrude to the first vertical plate, the first flange and the second flange it
Between form gap, limit plate is arranged between the first flange, the second flange and bottom plate, and the first crotch and the second crotch pass through first
Catch on limit plate in gap between flange and the second flange.
The utility model has the advantages that the flexible deformation of limited extent can occur between bottom bar component and bottom frame component, enable bottom frame component
Opening is bonded and covered with elastic force appropriate, can reduce the first elastic foot and the second elastic foot due to deforming excessive and impaired failure
Risk, be conducive to the stability and durability that improve elastic bottom bar assembly.The hook formation of first crotch and the second crotch has
Conducive to the risk for reducing the first elastic foot and the second elastic foot disengaging bottom frame component.
Detailed description of the invention
Following further describes the present invention with reference to the drawings:
Fig. 1 is the structural schematic diagram of the elastic bottom bar assembly suspension status of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram that the elastic bottom bar assembly of the embodiment of the present invention is bonded with shell；
Fig. 3 is the partial schematic diagram of the elastic bottom bar assembly in Fig. 1 of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of Section A-A in Fig. 3 of the embodiment of the present invention；
Fig. 5 is the partial schematic diagram of the elastic bottom bar assembly in Fig. 2 of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of section B-B in Fig. 5 of the embodiment of the present invention；
Fig. 7 is the decomposition diagram of the elastic bottom bar assembly of the embodiment of the present invention；
Fig. 8 is the torsional spring of the embodiment of the present invention and the assembled state schematic diagram of limit plate；
Fig. 9 is the torsional spring of the embodiment of the present invention and the separate state diagram of limit plate.
Specific embodiment
Referring to figs. 1 to 9, the projection screen equipped with elastic bottom bar assembly, including rolling-up mechanism 1, curtain 2, shell 3 and elastic bottom
Bar assembly, rolling-up mechanism 1 are located in shell 3, and shell 3 is equipped with opening 4, and curtain 2 is reached other than shell 3 by opening 4, bullet
Property bottom bar assembly is connect other than shell 3 with curtain 2.
When rolling-up mechanism 1 packs up curtain 2, elastic bottom bar assembly moves to opening 4 and covers opening 4.
Elastic bottom bar assembly includes bottom bar component and bottom frame component, and one end of curtain 2 is connect with bottom bar component.
Bottom bar component is equipped with the first elastic foot 5 and the second elastic foot 6, the first elastic foot 5 and the second elastic foot 6 respectively to
Different directions are diverged to, the first elastic foot 5 and the second elastic foot 6 can elastic bending, the end of the first elastic foot 5 is formed by bending
One crotch 24, the end of the second elastic foot 6 are formed by bending the second crotch 25.
Bottom frame component be equipped with the first slotted hole 7, the second slotted hole 8, third slotted hole 9 and the 4th slotted hole 10, first
Slotted hole 7 and the second slotted hole 8 are arranged side by side, and third slotted hole 9 and the 4th slotted hole 10 are arranged side by side.
First crotch 24 passes through the first slotted hole 7 and is inserted into the second slotted hole 8, and it is oval that the second crotch 25 passes through third
Hole 9 is simultaneously inserted into the 4th slotted hole 10.
Preferably, bottom bar component further includes the body of rod 11 and several torsional springs 12, the body of rod 11 is fixed on one end of curtain 2, turns round
The middle part of spring 12 is connect with the body of rod 11, and the bending two ends of torsional spring 12 are at the first elastic foot 5, the second elastic foot 6,24 and of the first crotch
Second crotch 25.
Preferably, bottom bar component further includes several bolts 13, the body of rod 11 is equipped with through slot 14 and through-hole 15, through slot 14 from
The other end of the body of rod 11 is run through in one end of the body of rod 11, and through-hole 15 runs through the body of rod 11 from the slot bottom of through slot 14, the middle part of torsional spring 12 from
Through-hole 15 is extend into through slot 14, and the first elastic foot 5 and the second elastic foot 6 pass through through-hole 15 and reach outside the body of rod 11, bolt
13 pass through torsional spring 12 out of through slot 14 and connect torsional spring 12 rotationally with bottom bar.
Preferably, bottom frame component further includes framework 16 and limit plate 17, the embeddable opening 4 of framework 16 is interior and covers opening
4, limit plate 17 is connect with framework 16, and the first slotted hole 7, the second slotted hole 8, third slotted hole 9 and the 4th slotted hole 10 are to set
Through-hole 15 on limit plate 17 is additionally provided with centre bore 18, the first slotted hole 7 and third slotted hole 9 and center on limit plate 17
Hole 18 is connected to.
Preferably, framework 16 includes bottom plate 19, the first vertical plate 20 and the second vertical plate 21, the first vertical plate 20 and the second vertical plate
21 are erected on bottom plate 19, and bottom plate 19 can cover opening 4 and be bonded with shell 3, and the first vertical plate 20 and the second vertical plate 21 are embeddable
In opening 4, between embeddable first vertical plate 20 of bottom bar component and the second vertical plate 21.
Preferably, framework 16 further includes the first flange 22 and the second flange 23, the first flange 22 is located at the first vertical plate 20
Side and protruded to the second vertical plate 21, the second flange 23 is located at the side of the second vertical plate 21 and protrudes to the first vertical plate 20, the
Gap is formed between one flange 22 and the second flange 23, limit plate 17 is arranged in the first flange 22, the second flange 23 and bottom plate 19
Between, the first crotch 24 and the second crotch 25 catch on limit plate 17 by the gap between the first flange 22 and the second flange 23.
About rolling-up mechanism 1, the rolling-up mechanism 1 of the present embodiment includes spool and the driving unit for driving spool rotation.Curtain
One end of cloth 2 is connect with spool and the other end of curtain 2 is connect with elastic bottom bar assembly, and spool can drive curtain 2 by rotation
Coiling and drive elastic bottom bar assembly with an end motion of curtain 2 on the surface of spool.Spool is located in shell 3, on shell 3
Equipped with opening 4, one end of curtain 2 is reached other than shell 3 by opening 4, and when spool packs up curtain 2, elastic bottom bar is total
At to opening 4 move and cover opening 4.
About curtain 2, any curtain 2 with projection screen function is can be selected in the curtain 2 of the present embodiment.
About shell 3, the appearance of the shell 3 of the present embodiment is rectangular-shape, but the shape of shell 3 is not limited to cuboid
Shape.
About the first elastic foot 5 and the second elastic foot 6, first elastic foot 5 and the second elastic foot 6 of the present embodiment are located at together
On one torsional spring 12.But the first elastic foot 5 and the second elastic foot 6 need to stretch out with diverging and the ability with elastic bending
Realize technical effect required for the technical program.First elastic foot 5 and the second elastic foot 6 can form hook solid with any
Elastic component substitution.The first elastic foot 5 and the second elastic foot 6 in the technical program diverged to different directions, in particular to
It is diverged to respectively to the both ends of the length direction of elastic bottom bar assembly.But the fork direction of the first elastic foot 5 and the second elastic foot 6 is not
It is limited to the direction of the present embodiment.The fork direction of first elastic foot 5 and the second elastic foot 6 only needs difference, and this technology can be realized
Technical effect needed for scheme.
About the first slotted hole 7, the second slotted hole 8, third slotted hole 9 and the 4th slotted hole 10, the first of the present embodiment
The direction of slotted hole 7 and the second slotted hole 8 is parallel to each other, and the direction of third slotted hole 9 and the 4th slotted hole 10 is parallel to each other.The
The direction of one slotted hole 7 and the second slotted hole 8 is arranged side by side, and the direction of third slotted hole 9 and the 4th slotted hole 10 is arranged side by side,
Make the first crotch 24 and the second crotch 25 can be close to each other or separate within certain limits.Because the first slotted hole 7, second is oval
The length in hole 8, third slotted hole 9 and the 4th slotted hole 10 is limited, so the activity of the first crotch 24 and the second crotch 25
Range is also limited, so that the elastic deformation level between bottom bar component and bottom frame component be made also to be limited.
Fig. 3 and Fig. 4 shows the first elastic foot 5 and the second elastic foot 6 under elastic bottom bar assembly free suspension state
Status diagram.Fig. 5 and Fig. 6 shows first elastic foot, 5 He in the state of opening 4 of elastic bottom bar assembly fitting shell 3
The status diagram of second elastic foot, 6 flexible deformation.In the state of Fig. 5 and Fig. 6, the first elastic foot 5 and the second elastic foot 6 it
Between angle ratio Fig. 3 and Fig. 4 state under angle it is smaller, and the spacing between bottom bar component and bottom frame component also becomes larger.In Fig. 3
Under Fig. 4 state, the first crotch 24 and the second crotch 25 are close to each other, but under the length limitation of each slotted hole, first is curved
The moving distance of hook 24 and the second crotch 25 is limited, and elastic bottom bar assembly is enable to carry out flexible deformation simultaneously within certain limits
It is bonded the opening 4 of shell 3.The hook formation of first crotch 24 and the second crotch 25 can be held in each slotted hole, be conducive to
It reduces the first elastic foot 5 and the second elastic foot 6 is detached from the risk of bottom frame component.
The flexible deformation that limited extent can occur between bottom bar component and bottom frame component, enables bottom frame component with bullet appropriate
Power is bonded and covers opening 4, can reduce the risk of the first elastic foot 5 and the second elastic foot 6 due to deforming excessive and impaired failure,
Be conducive to improve the stability and durability of elastic bottom bar assembly.The hook formation of first crotch 24 and the second crotch 25 is conducive to
It reduces the first elastic foot 5 and the second elastic foot 6 is detached from the risk of bottom frame component.
About the body of rod 11, the body of rod 11 of the present embodiment is strip, and the cross sectional shape of the body of rod 11 is as shown in figure 3, the body of rod 11
For extrusion.The body of rod 11 can be manufactured with plastics or mental section.
About torsional spring 12, each torsional spring 12 of the present embodiment is arranged along the length direction array of the body of rod 11, makes bottom bar component
It can keep as far as possible being parallel to each other during elastic bottom bar assembly carries out flexible deformation with bottom frame component.As shown in Figure 8-9,
The first crotch 24 and the second crotch 25 on the torsional spring 12 of the present embodiment are bent in the opposite direction, and the first slotted hole 7, second
Slotted hole 8, third slotted hole 9 and the 4th slotted hole 10 form corresponding centrosymmetric arrangement form, are conducive to save torsional spring
12 occupied spaces.
About bolt 13, preferably, the bolt 13 of the present embodiment is dismountable.But bolt 13 may also be configured to fix
On the body of rod 11.The middle part of the torsional spring 12 of the present embodiment around bolt 13 crimp, make torsional spring 12 can with respect to the axis rotation of bolt 13,
And make torsional spring 12 that can be conducive to the freedom degree for improving torsional spring 12 along the axis direction play of bolt 13, make bolt 13 and torsional spring 12
It is easily installed and realizes automatic positioning.
About through slot 14, preferably, the through slot 14 of the present embodiment runs through the both ends of the body of rod 11.But through slot 14 is also settable
It is closed at both ends.Through slot 14 keeps the body of rod 11 easily fabricated through the both ends of the body of rod 11, and makes the installation shape of bolt 13 and torsional spring 12
State is easy to observe.
About through-hole 15, the through-hole 15 of the present embodiment is round rectangle.The length of the bolt 13 of the present embodiment is greater than through-hole
15 most short side is long, makes bolt 13 that can be clamped on the side of through-hole 15.
About framework 16, preferably, the framework 16 of the present embodiment is extrusion, the section shape of the framework 16 of the present embodiment
Shape is as shown in Figure 3.The material of framework 16 can be selected but be not limited to plastics and mental section.
About limit plate 17, the limit plate 17 of the present embodiment is round rectangle.The connection type of limit plate 17 and framework 16
It can be selected but be not limited to welding, riveting is connected with fastener.Preferably, the limit plate 17 of the present embodiment is embedding by clamping form
Enter into framework 16, and by the first elastic foot 5 and the second elastic foot 6 tractive force of limit plate 17 is made limit plate 17 not from
It falls off in framework 16.
About centre bore 18, the centre bore 18 of the present embodiment is connected to the first slotted hole 7 and third slotted hole 9, makes first
Slotted hole 7, third slotted hole 9 and centre bore 18 can be completed to process by one-off hole-piercing, be conducive to the processing for simplifying limit plate 17
Technique.Because the length of the second slotted hole 8 and the 4th slotted hole 10 is less than the first slotted hole 7 and third slotted hole 9, second
Slotted hole 8 and the 4th slotted hole 10 still have position-limiting action to the scope of activities of the first crotch 24 and the second crotch 25.At this
In embodiment, the middle part of torsional spring 12 may further pass through centre bore 18, make the simpler convenience of installation between torsional spring 12 and bolt 13.
About bottom plate 19, the bottom plate 19 and shell 3 of the present embodiment use identical material, make between shell 3 and bottom plate 19
Appearance consistency it is more preferable.
About the first vertical plate 20 and the second vertical plate 21, the bottom bar component of the present embodiment is embeddable to the first vertical plate 20 and second
Between vertical plate 21, be conducive to improve the structural stability between bottom bar component and bottom frame component.
About the first flange 22 and the second flange 23, the framework 16 of the present embodiment is the extrusion of both ends perforation, and first is convex
Edge 22 and the second flange 23 be inserted into limit plate 17 can from the both ends of framework 16 and be clamped in framework 16, make limit plate 17 can edge
The length direction of framework 16 slides, and is easily installed limit plate 17 and can realize automatic positioning.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula, technical field those of ordinary skill within the scope of knowledge, can also be before not departing from present inventive concept
Put that various changes can be made.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term " on ",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense.It for example, " connection " may refer to be fixedly connected, also may refer to be detachably connected, or refer to integrally
Connection；It may refer to be mechanically connected, also may refer to be electrically connected；It may refer to be connected directly, it can also be by between intermediary
It connects connected.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
Claims (6)
1. being equipped with the projection screen of elastic bottom bar assembly, it is characterised in that: total including rolling-up mechanism, curtain, shell and elastic bottom bar
At the rolling-up mechanism is located in the shell, and the shell is equipped with opening, and the curtain reaches institute by the opening
It states other than shell, the elasticity bottom bar assembly is connect other than the shell with the curtain；
When the rolling-up mechanism packs up the curtain, the elasticity bottom bar assembly is opened to described in the harness motion and covering
Mouthful；
The elasticity bottom bar assembly includes bottom bar component and bottom frame component, and one end of the curtain is connect with the bottom bar component；
The bottom bar component is equipped with the first elastic foot and the second elastic foot, first elastic foot and second elastic foot point
Do not diverged to different directions, first elastic foot and second elastic foot can elastic bending, first elastic foot
End is formed by bending the first crotch, and the end of second elastic foot is formed by bending the second crotch；
The bottom frame component is equipped with the first slotted hole, the second slotted hole, third slotted hole and the 4th slotted hole, and described first is long
Circular hole and second slotted hole are arranged side by side, and the third slotted hole and the 4th slotted hole are arranged side by side；
First crotch passes through first slotted hole and is inserted into second slotted hole, and second crotch passes through institute
It states third slotted hole and is inserted into the 4th slotted hole.
2. the projection screen according to claim 1 for being equipped with elastic bottom bar assembly, it is characterised in that: the bottom bar component also wraps
The body of rod and several torsional springs are included, the body of rod is fixed on one end of the curtain, and the middle part of the torsional spring is connect with the body of rod, institute
The bending two ends of torsional spring are stated into first elastic foot, second elastic foot, first crotch and second crotch.
3. the projection screen according to claim 2 for being equipped with elastic bottom bar assembly, it is characterised in that: the bottom bar component also wraps
Several bolts are included, the body of rod is equipped with through slot and through-hole, and the through slot is from one end of the body of rod through the another of the body of rod
One end, the through-hole run through the body of rod from the slot bottom of the through slot, and the middle part of the torsional spring extend into described from the through-hole
In through slot, first elastic foot and second elastic foot pass through the through-hole and reach outside the body of rod, the bolt
The torsional spring is passed through out of described through slot and connect the torsional spring rotationally with the bottom bar.
4. according to claim 1 to the projection screen for being equipped with elastic bottom bar assembly described in 3 any one, it is characterised in that: described
Bottom frame component further includes framework and limit plate, and the embeddable opening of framework is interior and covers the opening, the limit plate
It is connect with the framework, first slotted hole, second slotted hole, the third slotted hole and the 4th slotted hole are
The through-hole being located on the limit plate is additionally provided with centre bore on the limit plate, and first slotted hole and the third are oval
Hole is connected to the centre bore.
5. the projection screen according to claim 4 for being equipped with elastic bottom bar assembly, it is characterised in that: the framework includes bottom
Plate, the first vertical plate and the second vertical plate, first vertical plate and second vertical plate are erected on the bottom plate, and the bottom plate can cover
It covers the opening and is bonded with the shell, in first vertical plate and the embeddable opening of second vertical plate, the bottom
Between embeddable first vertical plate of bar assembly and second vertical plate.
6. the projection screen according to claim 5 for being equipped with elastic bottom bar assembly, it is characterised in that: the framework further includes the
One flange and the second flange, first flange is located at the side of first vertical plate and protrudes to second vertical plate, described
Second flange is located at the side of second vertical plate and protrudes to first vertical plate, first flange and second flange
Between form gap, the limit plate is arranged between first flange, second flange and the bottom plate, described first
Crotch and second crotch catch on the limit plate by the gap between first flange and second flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786398.9A CN110456605B (en) | 2019-08-23 | 2019-08-23 | Projection screen with elastic bottom rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786398.9A CN110456605B (en) | 2019-08-23 | 2019-08-23 | Projection screen with elastic bottom rod assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110456605A true CN110456605A (en) | 2019-11-15 |
| CN110456605B CN110456605B (en) | 2024-03-12 |
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ID=68488901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910786398.9A Active CN110456605B (en) | 2019-08-23 | 2019-08-23 | Projection screen with elastic bottom rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110456605B (en) |
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