CN211653383U

CN211653383U - Liftable projection screen

Info

Publication number: CN211653383U
Application number: CN202020297449.XU
Authority: CN
Inventors: 萧毅; 郭锦波; 秦文君
Original assignee: Guangzhou Xiongyun Audiovisual Equipment Co ltd
Current assignee: Guangzhou Xiongyun Audiovisual Equipment Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-09
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a liftable projection curtain, include: the curtain comprises a bottom shell, a curtain and a torsion spring, wherein a rotating shaft, a curtain and the torsion spring are arranged on the bottom shell, one end of the curtain can be wound on the rotating shaft, and the torsion spring can drive the rotating shaft to rotate on the bottom shell; one end of the curtain is connected with the top plate; two supporting components, supporting component include first connecting rod, second connecting rod, third connecting rod and pneumatic rod, and first connecting rod, second connecting rod and third connecting rod articulate in proper order between drain pan and roof, and two supporting component symmetrical arrangement, the second connecting rod in two supporting components is crossing and articulated each other in crossing department, and pneumatic rod's both ends are articulated with first connecting rod and second connecting rod respectively. Has the advantages that: the pneumatic rod has the functions of supporting and braking, so that the supporting component can be unfolded and folded under the action of external force, and can also provide support for the curtain in a fixed posture. The resistance is great when the pneumatic rod stretches out and draws back, is favorable to improving supporting component's structural stability. The utility model relates to a projection curtain.

Description

Liftable projection screen

Technical Field

The utility model relates to a projection curtain, in particular to liftable projection curtain.

Background

The ground draws the curtain to be one kind of projection curtain, belongs to the projection curtain of liftable. The floor curtain can be fixedly installed on the ground and can be unfolded by being lifted upwards.

A floor screen typically includes a bottom shell, a top plate, a screen, and a number of links, each of which forms a collapsible bracket structure between the top plate and the bottom shell. Each connecting rod can expand to enlarge the distance between the top plate and the bottom shell and expand the curtain between the top plate and the bottom shell.

The pneumatic rod, also called pneumatic brace rod, is a telescopic rod device. The working principle of the air pressure rod is that inert gas is filled in a closed pressure cylinder, so that the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of the piston rod is realized by utilizing the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston. The pneumatic rod can play the functions of supporting, buffering, braking, height adjustment, angle adjustment and the like.

In the prior art, the floor-pulling curtain usually drives the connecting rod to move by the telescopic spring and the pull rope, so as to realize the folding and unfolding of the floor-pulling curtain, and the technical defects are as follows: the motion stability of the connecting rod in the folding and unfolding processes is poor, the structural stability of the connecting rod in the state after the floor screen is unfolded is also poor, and the accidental motion of the screen is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a projection curtain of the better liftable of structural stability.

The technical scheme adopted for solving the technical problems is as follows:

liftable projection curtain includes:

the curtain comprises a bottom shell, a curtain and a torsion spring, wherein a rotating shaft, a curtain and the torsion spring are arranged on the bottom shell, one end of the curtain can be wound on the rotating shaft, and the torsion spring can drive the rotating shaft to rotate on the bottom shell;

one end of the curtain is connected with the top plate;

two supporting components, supporting component include first connecting rod, second connecting rod, third connecting rod and pneumatic rod, and first connecting rod, second connecting rod and third connecting rod articulate in proper order between drain pan and roof, and two supporting component symmetrical arrangement, the second connecting rod in two supporting components is crossing and articulated each other in crossing department, and pneumatic rod's both ends are articulated with first connecting rod and second connecting rod respectively.

The liftable projection screen at least has the following beneficial effects:

the support assembly forms a foldable mechanism between the bottom shell and the top plate, so that the distance between the bottom shell and the top plate is adjustable. The pneumatic rod has the functions of supporting and braking, so that the supporting component can be unfolded and folded under the action of external force, and can also provide support for the curtain in a fixed posture. The resistance is great when the pneumatic rod stretches out and draws back, is favorable to improving supporting component's structural stability.

The utility model discloses an in a possible embodiment, still be equipped with a plurality of spike on the drain pan, the spike is fixed outside the drain pan, and the both ends of spike stretch out outside the drain pan. The arm brace can provide the support for the drain pan, can strengthen the structural stability of drain pan, is favorable to strengthening the structural stability of projection curtain.

In a possible embodiment of the present invention, the supporting legs are strip-shaped, the middle of the supporting legs intersects with the bottom casing, and the number of the supporting legs is two. The quantity of spike is two, can form four strong points outside the drain pan, and four strong point rectangles distribute, can provide stable support basis for the shell, are favorable to strengthening the stability of projection curtain.

In a possible embodiment of the present invention, a handle is further disposed on the top plate, and both ends of the handle are respectively connected to the top plate. The handle can provide the gripping basis for the roof, is favorable to improving the operation convenience of pulling the roof.

In a possible embodiment of the present invention, the two ends of the handle are hinged to the top plate, and the handle can rotate around the end of the handle on the top plate. But articulated and rotation each other between handle and the roof make the handle accomodate under can being rotated the state of laminating roof.

The utility model discloses an among the possible embodiment, be equipped with the hanging tube on the roof, be equipped with the draw-in groove on the hanging tube, the draw-in groove is parallel with the length direction of hanging tube, thereby the one end of curtain can be embedded into in the draw-in groove with hanging tube fixed connection, the length of hanging tube is not less than the width of curtain. The hanging tube enables one end of the curtain to be uniformly pulled open, the length of the hanging tube is not smaller than the width of the curtain, the curtain can be favorably flattened in an unfolding state, and the projection quality can be improved.

In a possible embodiment of the present invention, a cover is further disposed on the bottom casing, the cover can cover the bottom casing and form a holding cavity, and the top plate, the curtain and the supporting component can be placed into the holding cavity. The lid body detachably seals the casing, makes the projection curtain be convenient for accomodate, is favorable to preventing that curtain and supporting component receive the damage under the state of accomodating.

In a possible embodiment of the present invention, a hinge structure is provided between one side of the cover and the bottom case, and the other side of the cover is provided with a plurality of hasps which can be clamped on the bottom case. The hinge structure enables the cover body to rotate around the bottom shell to realize opening and closing, and the hasp enables the cover body to be fixed on the bottom shell, so that the structural stability of the cover body is enhanced.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an expanded state of a curtain according to an embodiment of the present invention;

fig. 2 is a right side view of fig. 1 of an embodiment of the present invention;

fig. 3 is a schematic view of a curtain according to an embodiment of the present invention in a folded state;

fig. 4 is a schematic perspective view of a support assembly according to an embodiment of the present invention;

reference numerals:

bottom shell 1, pivot 2, curtain 3, torsional spring 4, roof 5, hanging tube 6, first connecting rod 7, second connecting rod 8, third connecting rod 9, atmospheric pressure pole 10, spike 11, handle 12, lid 13, hasp 14.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, a liftable projection screen includes:

the screen comprises a bottom shell 1, wherein a rotating shaft 2, a screen 3 and a torsion spring 4 are arranged on the bottom shell 1, one end of the screen 3 can be wound on the rotating shaft 2, and the torsion spring 4 can drive the rotating shaft 2 to rotate on the bottom shell 1;

the top plate 5 is connected with one end of the curtain 3;

two supporting components, supporting component include first connecting rod 7, second connecting rod 8, third connecting rod 9 and pneumatic rod 10, and first connecting rod 7, second connecting rod 8 and third connecting rod 9 articulate in proper order between drain pan 1 and roof 5, and two supporting component symmetrical arrangement, second connecting rod 8 in two supporting component intersect and articulate each other in crossing department, and pneumatic rod 10's both ends articulate with first connecting rod 7 and second connecting rod 8 respectively.

The liftable projection screen at least has the following beneficial effects:

the support assembly forms a foldable mechanism between the bottom shell 1 and the top plate 5, so that the distance between the bottom shell 1 and the top plate 5 is adjustable. The pneumatic rods 10 have a supporting and braking function, so that the support assembly can be unfolded and folded under the action of external force, and can also provide support for the curtain 3 in a fixed posture. The resistance is larger when the air pressure rod 10 extends and retracts, which is beneficial to improving the structural stability of the supporting component.

Regarding the bottom case 1, the bottom case 1 may be fixed on the ground, and may provide a support for the projection screen. The curtain 3 may be wound and received in the bottom case 1. The rotating shaft 2 enables the curtain 3 to be wound, and the curtain 3 can be accommodated. The torsion spring 4 makes the rotating shaft 2 have a tendency of autorotation, and makes the rotating shaft 2 have a tendency of driving the curtain 3 to automatically wind. The stretching process of the air pressure rod needs certain external force to start, and the external force needed by the starting of the air pressure rod is larger than the force of the torsion spring 4 pulling the curtain 3, so that the support assembly can keep a stable posture in the unfolding state of the curtain 3, and support is provided for the curtain 3 and the top plate 5.

With respect to the top panel 5, the top panel 5 may provide a fixed foundation for the deployment of the curtain 3.

Regarding the supporting component, the first connecting rod 7, the second connecting rod 8 and the third connecting rod 9 are sequentially hinged end to form a Z-shaped mechanism, and folding and unfolding can be achieved. The two supporting components are symmetrically arranged and hinged through the second connecting rod 8, which is beneficial to enhancing the structural stability of the two supporting components, so that the bottom shell 1 and the top plate 5 can be kept parallel.

As for the pneumatic rod 10, the pneumatic rod 10 is a telescopic mechanism and has a certain resistance during the telescopic process. One end of the pneumatic rod 10 is hinged with the first connecting rod 7, and the other end is hinged with the second connecting rod 8, so that the supporting component can have a braking function in the folding and unfolding processes, the structural stability of the supporting component can be enhanced, and the vibration of the supporting component in the motion process can be reduced. The pneumatic rod 10 enables the support assembly to be unfolded and folded under the action of external force, and the pneumatic rod 10 enables the support assembly to still maintain a stable posture after the external force disappears. When the curtain 3 needs to be unfolded, the top plate 5 can be manually pulled up, so that the distance between the top plate 5 and the bottom shell 1 is increased, and the curtain 3 is unfolded.

In this embodiment, the bottom case 1 is further provided with a plurality of supporting legs 11, the supporting legs 11 are fixed outside the bottom case 1, and two ends of the supporting legs 11 extend out of the bottom case 1. The supporting feet 11 can support the bottom shell 1, can strengthen the structural stability of the bottom shell 1, and is beneficial to strengthening the structural stability of the projection screen.

Regarding the supporting leg 11, the shape of the supporting leg 11 is a long strip, the middle part of the supporting leg 11 intersects with the bottom case 1, and two ends of the supporting leg extend out of the supporting leg 11. The number of the arm brace 11 is two.

In this embodiment, the supporting legs 11 are strip-shaped, the middle of the supporting legs 11 intersects with the bottom case 1, and the number of the supporting legs 11 is two. The quantity of spike 11 is two, can form four strong points in drain pan 1 appearance, and four strong point rectangles distribute, can provide stable support basis for the shell, are favorable to strengthening the stability of projection curtain.

In this embodiment, a handle 12 is further disposed on the top plate 5, and two ends of the handle 12 are respectively connected to the top plate 5. The handle 12 can provide a gripping base for the top plate 5, which is beneficial to improving the operation convenience for pulling the top plate 5.

In this embodiment, handle 12 is hinged at both ends to top panel 5, and handle 12 is pivotable on top panel 5 about the ends of handle 12. Handle 12 and roof 5 are articulated and can rotate each other between, make handle 12 can be rotated and accomodate under the state of laminating roof 5.

In this embodiment, be equipped with hanging pipe 6 on roof 5, be equipped with the draw-in groove on hanging pipe 6, the draw-in groove is parallel with hanging pipe 6's length direction, thereby the one end of curtain 3 can be embedded into in the draw-in groove with hanging pipe 6 fixed connection, the length of hanging pipe 6 is not less than the width of curtain 3. The hanging tube 6 can make one end of the curtain 3 be pulled open evenly, and the length of the hanging tube 6 is not less than the width of the curtain 3, which is beneficial to improving the flattening degree of the curtain 3 in the unfolding state and improving the projection quality.

In this embodiment, the bottom casing 1 is further provided with a cover 13, the cover 13 can cover the bottom casing 1 and form an accommodating cavity, and the top plate 5, the curtain 3 and the supporting assembly can be placed into the accommodating cavity. The cover body 13 can detachably close the casing body, so that the projection screen is convenient to store, and the curtain 3 and the supporting component are prevented from being damaged in the storage state.

In this embodiment, a hinge structure is formed between one side of the cover 13 and the bottom case 1, and a plurality of buckles 14 are disposed on the other side of the cover 13, and the buckles 14 can be fastened to the bottom case 1. The hinge structure allows the lid 13 to rotate around the bottom case 1 for opening and closing, and the buckle 14 allows the lid 13 to be fixed to the bottom case 1, which is advantageous for enhancing the structural stability of the lid 13.

Claims

1. Projection screen of liftable, its characterized in that includes:

the curtain device comprises a bottom shell, a curtain and a torsion spring, wherein a rotating shaft, the curtain and the torsion spring are arranged on the bottom shell, one end of the curtain can be wound on the rotating shaft, and the torsion spring can drive the rotating shaft to rotate on the bottom shell;

one end of the curtain is connected with the top plate;

two supporting components, supporting component includes first connecting rod, second connecting rod, third connecting rod and pneumatic rod, first connecting rod the second connecting rod with the third connecting rod articulates in proper order the drain pan with between the roof, two supporting component symmetrical arrangement, two among the supporting component the second connecting rod is crossing and articulated each other in crossing department, the both ends of pneumatic rod respectively with first connecting rod with the second connecting rod is articulated.

2. The liftable projection screen of claim 1, wherein: the bottom shell is further provided with a plurality of supporting legs, the supporting legs are fixed outside the bottom shell, and two ends of the supporting legs extend out of the bottom shell.

3. The liftable projection screen of claim 2, wherein: the supporting legs are strip-shaped, the middle parts of the supporting legs are intersected with the bottom shell, and the number of the supporting legs is two.

4. The liftable projection screen of claim 1, wherein: the top plate is further provided with a lifting handle, and two ends of the lifting handle are respectively connected with the top plate.

5. The liftable projection screen of claim 4, wherein: the two ends of the handle are hinged to the top plate, and the handle can rotate around the end portions of the handle on the top plate.

6. The liftable projection screen of claim 1, wherein: the curtain is characterized in that a hanging pipe is arranged on the top plate, a clamping groove is formed in the hanging pipe, the clamping groove is parallel to the length direction of the hanging pipe, one end of the curtain can be embedded into the clamping groove, and therefore the curtain is fixedly connected with the hanging pipe, and the length of the hanging pipe is not smaller than the width of the curtain.

7. The liftable projection screen of claim 1, wherein: the bottom shell is further provided with a cover body, the cover body can cover the bottom shell and form an accommodating cavity, and the top plate, the curtain and the supporting assembly can be placed into the accommodating cavity.

8. The liftable projection screen of claim 7, wherein: the hinge structure is arranged between one side of the cover body and the bottom shell, the other side of the cover body is provided with a plurality of hasps, and the hasps can be clamped on the bottom shell.