CN211956108U

CN211956108U - Floor-pulling type projection screen

Info

Publication number: CN211956108U
Application number: CN202020949795.1U
Authority: CN
Inventors: 姜国旗
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-11-17
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a formula of pulling on ground projection curtain, including receiver and display device, open the receiver side has a skylight, display device is accomodate in the receiver or is followed the skylight is tensile to be gone out, display device includes display screen and supports display screen's support, the display screen upper end is connected with the upper shaft, the support upper end is even on the upper shaft, the cylinder of support is lived to balanced support when the support bounces, the support comprises two parts that can follow the angle chain and freely receive and open, display screen's both sides limit is provided with the tightening means who adjusts the display screen elasticity. The utility model discloses its reasonable in design, simple structure, the installation of being convenient for, low in production cost, and more firm, life is also longer, and the people of being convenient for simultaneously carry out the regulation of elasticity to the film curtain, makes things convenient for people's use more.

Description

Floor-pulling type projection screen

Technical Field

The utility model relates to a projection curtain technical field especially relates to a formula of drawing projection curtain.

Background

The projection screen (also called projection screen) can display the picture projected by the projector. At present, there are many kinds of projection screens, including a bracket projection screen supported by a bracket, a pull-down projection screen fixed to a wall, and a pull-up floor (also called floor-mounted) projection screen placed on the ground. Wherein, the floor-pulling projection screen is convenient to use and move.

The ground draws projection screen among the prior art mainly includes prolate hollow dustcoat, and the dustcoat both had acted as the curtain box, also had the base concurrently, is provided with spool, curtain in the dustcoat, and the curtain twines in the spool, and still is provided with collection formula transposition elevating system in the dustcoat, and collection formula transposition elevating system supports the curtain when being used for using. Then chinese utility model patent publication No. CN201845167U has appeared, spring ground is drawn projection screen has been proposed, it is including the dustcoat, be provided with the spool in the dustcoat, the upper shaft, the curtain, the one end of curtain twines in the spool, the other end of curtain is fixed in the upper shaft, still be provided with folding mechanism in the dustcoat, an extension spring for balanced support lives beta structure when folding mechanism bounces, folding mechanism's bottom mounting is in the dustcoat, folding mechanism's top and upper shaft fixed connection, the one end of extension spring is fixed in the dustcoat, the other end and the bottom of folding mechanism of extension spring are connected. Because adopt simple folding mechanism and portable extension spring to support the curtain, consequently the utility model has the characteristics of simple structure, easily move, convenient to use, not only this kind of structure still prior art's projection curtain, the defect of its existence has:

firstly, when the projection screen is connected by adopting an angular chain, the angular chain is generally formed by four stainless steel modules, plastic sheets are clamped between the middle and two ends of each stainless steel module, and the stainless steel modules are installed by a plurality of screws and nuts, so that the installation is very inconvenient, the production cost is high, and the installation is easy to damage;

second, its projection curtain often can blow along with wind outdoor or when having the strong wind, is unfavorable for people's watching, and its user demand that can't be based on people adjusts the projection curtain.

Therefore, there is a need for improvement in response to the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a formula of pulling projection curtain, its reasonable in design, simple structure, the installation of being convenient for, low in production cost, and more firm, life is also longer, and the people of being convenient for simultaneously carry out the regulation of elasticity to the film curtain, make things convenient for people's use more.

In order to realize the purpose, the utility model adopts the technical scheme that:

a floor-pulling type projection screen comprises a storage box and a display device, wherein a skylight is formed in the side face of the storage box, the display device is stored in the storage box or is stretched out of the skylight, the display device comprises a display screen and a support for supporting the display screen, the upper end of the display screen is connected with an upper shaft, the upper end of the support is connected to the upper shaft, a cylinder of the support is supported in a balanced mode when the support bounces, the support is composed of two parts capable of being freely folded and unfolded along an angle chain, tightening devices for adjusting the tightness of the display screen are arranged on two side edges of the display screen, the support is located on two sides of the display device when the support is completely unfolded, and the tightness of the display screen can be adjusted through the tightening devices; when the support is completely contracted, the display device and the tightening device are contained in the containing box.

Preferably, the angle chain comprises an upper end connecting piece and a lower end connecting piece, the upper end connecting piece and the lower end connecting piece are connected together through the connecting piece, and a fixing piece is arranged on the connecting piece and movably connects the connecting piece, the upper end connecting piece and the lower end connecting piece. The design and installation are convenient, the production cost is low, the firmness is high, and the service life is long.

Preferably, a through hole is formed between the upper end connecting piece and the lower end connecting piece, the through hole is used for the corresponding support to pass through, the support comprises an upper part support and a lower part support, the upper part support and the lower part support correspondingly pass through the through hole, and the upper end connecting piece and the lower end connecting piece are movably connected through a fixing piece on the connecting piece. The installation of people is convenient.

Preferably, the upper end connecting piece and the lower end connecting piece are stainless steel plates, the connecting pieces are plastic plates, and the fixing pieces are metal rivets.

Preferably, the storage box is provided with a cover plate corresponding to the skylight, the cover plate is hinged with the storage box, and when the display device is stored in the storage box, the cover plate covers the skylight. When the display device is accommodated in the accommodating box, the skylight can be covered by the cover plate, and the floor-pulling type projection screen can be closed more conveniently.

Preferably, receiver below is provided with the supporting legs, is favorable to putting subaerial to make the supporting effect better.

Preferably, tightening means includes the fixed orifices integrative with display screen, passes the bungee cord of fixed orifices, bungee cord one end is connected on the receiver, the bungee cord passes the fixed orifices, the bungee cord other end is connected on the upper shaft. The tension device is reasonable in design, pays more attention to tension and convenience in installation, is low in production cost, firm and long in service life, and does not deform. And a screwing screw can be arranged on the upper shaft, and the other end of the elastic wire is connected to the upper shaft and then wound on the screwing screw, so that the tightness of the elastic wire can be adjusted, and the tightness of the display screen can be adjusted.

Preferably, the fixing holes are distributed at intervals on two sides of the display screen. The installation of people is facilitated, and the tightness of the display screen can be better adjusted.

Preferably, the fixing hole is at least one. The specific fixing holes are two, so that the display screen can be better connected.

The utility model has the advantages that: the utility model discloses the middle support comprises two parts that can freely receive and expand along the angle chain, the angle chain includes upper end connecting piece and lower extreme connecting piece, upper end connecting piece and lower extreme connecting piece link together through the connecting piece, be provided with on the connecting piece with the connecting piece, upper end connecting piece and the mounting of lower extreme connecting piece swing joint, its design simple to operate, low in production cost, firm, long service life; tightening means includes the fixed orifices integrative with display screen, passes the bungee cord of fixed orifices, bungee cord one end is connected on the receiver, the bungee cord passes the fixed orifices, the bungee cord other end is connected on the upper shaft, its reasonable in design pays close attention to taut simple to operate more, low in production cost, firm, long service life, not make its deformation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the corner chain of the present invention;

FIG. 3 is a schematic view of the connection between the upper end connecting piece and the lower end connecting piece of the present invention via the connecting piece;

FIG. 4 is a schematic view of the connection between the cylinder and the bracket of the present invention;

fig. 5 is a schematic view of a storage box of the present invention;

fig. 6 is a schematic view of the tightening device of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1, a pull-down type projection screen includes a storage box 1 and a display device 2, a skylight 11 is opened on a side surface of the storage box, the display device 2 is stored in the storage box 1 or is stretched out from the skylight 11, the display device 2 includes a display screen 21 and a bracket 22 supporting the display screen 21, an upper shaft 23 is connected to an upper end of the display screen 21, an upper end of the bracket 22 is connected to the upper shaft 23, the bracket 22 supports a cylinder 24 of the bracket 22 in a balanced manner when bouncing up, the bracket 22 is composed of two parts capable of freely folding and unfolding along an angle chain 25, tightening devices 3 for adjusting tightness of the display screen 21 are arranged on two sides of the display screen 21, the bracket 22 is located on two sides of the display device 2 when completely unfolding, and the tightening devices 3 can adjust tightness of the display screen 21; when the bracket 22 is completely retracted, the display device 2 and the tightening device 3 are housed in the housing case 1.

As shown in fig. 2, 3 and 4, the angle chain 25 includes an upper end connector 251 and a lower end connector 252, the upper end connector 251 and the lower end connector 252 are connected together by a connector 253, and the connector 253 is provided with a fixing member 254 for movably connecting the connector 253, the upper end connector 251 and the lower end connector 252. The middle of the upper end connecting piece 251 and the lower end connecting piece 252 is provided with a through hole for the corresponding bracket 22 to pass through, the bracket 22 comprises an upper part bracket 221 and a lower part bracket 222, the upper part bracket 221 and the lower part bracket 222 correspondingly pass through the through hole, and the upper end connecting piece 251 and the lower end connecting piece 252 are movably connected through a fixing piece 254 on a connecting piece 253. The upper end connector 251 and the lower end connector 252 are both stainless steel plates, the connector 253 is a plastic plate, and the fixing member 254 is a metal rivet.

As shown in fig. 5, the storage case 1 is provided with a cover plate 12 corresponding to the skylight 11, the cover plate 12 is hinged to the storage case 1, and when the display device 2 is stored in the storage case 1, the cover plate 12 covers the skylight 11. Supporting legs 13 are arranged below the storage box 1.

As shown in fig. 6, the tightening device 3 includes a fixing hole 31 integrated with the display screen 21, and a tension line 32 passing through the fixing hole 31, one end of the tension line 32 being connected to the storage case 1, the tension line 32 passing through the fixing hole 31, and the other end of the tension line 32 being connected to the upper shaft 23. The fixing holes 31 are spaced apart on both sides of the display screen 21. At least one of the fixing holes 31, specifically, two fixing holes 31 are provided. And a screwing screw may be provided on the upper shaft 23, and the other end of the elastic thread 32 is connected to the upper shaft 23 and then wound on the screwing screw, thereby achieving tightness adjustment of the elastic thread 32, facilitating tightness adjustment of the display screen 21, and adjusting tightness of the elastic thread 32 according to environmental requirements.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. The utility model provides a ground pull formula projection screen, includes receiver (1) and display device (2), the receiver side is opened has a skylight (11), display device (2) are accomodate in receiver (1) or stretch out from skylight (11), its characterized in that: the display device (2) comprises a display screen (21) and a support (22) for supporting the display screen (21), the upper end of the display screen (21) is connected with an upper shaft (23), the upper end of the support (22) is connected to the upper shaft (23), the support (22) is used for supporting an air cylinder (24) of the support (22) in a balanced manner when bouncing up, the support (22) is composed of two parts which can be freely folded and unfolded along an angle chain (25), tightening devices (3) for adjusting the tightness of the display screen (21) are arranged on two side edges of the display screen (21), the support (22) is positioned on two sides of the display device (2) when being completely unfolded, and the tightness of the display screen (21) can be adjusted by the tightening devices (3); when the support (22) is completely contracted, the display device (2) and the tightening device (3) are contained in the storage box (1).

2. The floor-hung type projection screen as claimed in claim 1, wherein: the angle chain (25) comprises an upper end connecting piece (251) and a lower end connecting piece (252), the upper end connecting piece (251) and the lower end connecting piece (252) are connected together through a connecting piece (253), and a fixing piece (254) which movably connects the connecting piece (253), the upper end connecting piece (251) and the lower end connecting piece (252) is arranged on the connecting piece (253).

3. The floor-hung type projection screen as claimed in claim 2, wherein: the middle of the upper end connecting piece (251) and the lower end connecting piece (252) is provided with a through hole, the through hole is used for the corresponding support (22) to pass through, the support (22) comprises an upper branch support (221) and a lower part support (222), the upper branch support (221) and the lower part support (222) correspondingly pass through the through hole, and the upper end connecting piece (251) and the lower end connecting piece (252) are movably connected through a fixing piece (254) on a connecting piece (253).

4. A pull-down type projection screen as claimed in claim 2 or 3, wherein: the upper end connecting piece (251) and the lower end connecting piece (252) are both stainless steel plates, the connecting piece (253) is a plastic plate, and the fixing piece (254) is a metal rivet.

5. The floor-hung type projection screen as claimed in claim 1, wherein: the storage box (1) is provided with a cover plate (12) corresponding to the skylight (11), the cover plate (12) is hinged with the storage box (1), the display device (2) is stored in the storage box (1), and the skylight (11) is covered by the cover plate (12).

6. The pull-down type projection screen as claimed in claim 1 or 5, wherein: supporting legs (13) are arranged below the storage box (1).

7. The pull-down type projection screen as claimed in claim 1 or 5, wherein: tightening means (3) include with display screen (21) integrative fixed orifices (31), pass elastic thread (32) of fixed orifices (31), elastic thread (32) one end is connected on receiver (1), elastic thread (32) pass fixed orifices (31), the elastic thread (32) other end is connected on upper shaft (23).

8. The floor-hung type projection screen as claimed in claim 7, wherein: the fixing holes (31) are distributed on two side edges of the display screen (21) at intervals.

9. The floor-hung type projection screen as claimed in claim 8, wherein: at least one of the fixing holes (31).