WO2022012344A1

WO2022012344A1 - Soft projection screen mounting construct

Info

Publication number: WO2022012344A1
Application number: PCT/CN2021/103985
Authority: WO
Inventors: 唐泽达; 李士杰; 王霖; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2020-07-14
Filing date: 2021-07-01
Publication date: 2022-01-20
Also published as: CN212623557U

Abstract

Provided in the present utility model is a soft projection screen mounting construct, which comprises a soft projection screen assembly and an inner edge frame assembly. The soft screen assembly comprises a screen body and positioning elements provided at the periphery of the screen body. The inner edge frame assembly comprises an inner edge frame, a sliding element, and an adjusting element. The sliding element and the positioning element hang the screen body on the inner edge frame assembly via a detachable structure. The inner edge frame is provided with a mounting groove extending in the length direction thereof. The sliding element is engaged in the mounting groove and slides in the length direction of the inner edge frame, thus providing the screen body with a tensioning force in the length direction of the inner edge frame. A mounting through hole is provided at the bottom of the mounting groove. The adjusting element runs though the mounting through hole and is abutted against the sliding element. The soft projection screen mounting construct allows the degree of tensioning of the screen to be adjusted flexibly as required and, at the same time, provides increased flatness.

Description

Soft screen projection screen installation components

【Technical field】

The utility model relates to the field of projection display equipment, in particular to a soft-screen projection screen installation member.

【Background technique】

Projection screen is one of the most commonly used products in the peripheral equipment of projection display devices, and is widely used in theaters, schools, homes, large conferences and other occasions.

Projection screens currently on the market usually include two types of soft screens and hard screens. At this stage, for light-resistant projection screens of 100 inches and above, hard screens usually rely on a high-hardness backplane to provide support, and the screen needs to be fixedly installed by an assembly process such as lamination. This screen structure can ensure the flatness of the screen, thereby ensuring the viewing effect of high-quality projection display. However, because the back plate is made of metal materials such as honeycomb aluminum, the overall weight is large, and the screen cannot be bent, causing difficulties in installation and transportation. great difficulty.

For the installation of the soft screen, one way is to directly install the lifting reel and install it by hanging, but the flatness of the screen cannot be guaranteed in this installation method; It is tensioned by a spring and fixed on the inner frame. At present, after installation, the elasticity and tension are fixed and cannot be adjusted. This solution maintains the flatness of the screen, and also considers the problems of installation, packaging and transportation. The reverse-curved soft-screen projection screen is also spring-mounted, with many accessories, complicated installation, and inability to adjust the fixed tension.

Therefore, it is necessary to provide a new flexible screen projection screen mounting member to solve the above technical problems.

【Content of utility model】

The purpose of the utility model is to provide a soft screen projection screen installation member, which can avoid the defects that the elastic force cannot be adjusted after the spring is tightened and the elastic force cannot be adjusted.

In order to achieve the above purpose, the present invention provides a soft-screen projection screen installation member, comprising a soft-screen projection screen assembly and an inner frame assembly, wherein the soft-screen projection screen assembly includes a screen main body and a positioning member disposed on the periphery of the screen main body The inner frame assembly includes an inner frame, a sliding member and an adjusting member, and the sliding member and the positioning member are detachable to hang the screen main body on the inner frame assembly, and the inner frame There is an installation groove extending along its length direction, the sliding piece is clamped in the installation groove, and can slide along the length direction of the inner frame in the installation groove, so as to be in the length direction of the inner frame A tensioning force is provided on the screen main body, an installation through hole is provided at the bottom of the installation slot, and the adjustment piece is penetrated through the installation through hole and abuts with the sliding piece, so as to make the sliding piece moving in a length direction perpendicular to the inner frame to provide tension to the screen body in a length direction perpendicular to the inner frame.

Preferably, the positioning member is a PC backing plate fixed and integral with the screen main body.

Preferably, one of the positioning member and the sliding member is provided with a positioning protrusion, and the other is provided with a positioning hole for inserting the positioning protrusion.

Preferably, the mounting groove structure and the sliding member structure are arranged in coordination, the sliding member includes a limiting portion provided integrally and a sliding portion located above the limiting portion, and the mounting groove includes an inner cavity of the mounting groove and a mounting portion. Slot on top.

Preferably, the sliding member includes an integrally provided limiting portion and a sliding portion located above the limiting portion, the width of the limiting portion is greater than the width of the sliding portion, and the mounting groove structure is coordinated with the sliding portion structure. set up.

Preferably, the width of the limiting portion is greater than the width of the sliding portion, and the width of the inner cavity of the mounting groove is greater than the width of the upper opening of the mounting groove.

Preferably, the width of the inner cavity of the installation groove and the width of the limiting portion are set according to a first preset clearance; the width of the upper opening of the installation groove and the width of the sliding portion are set according to a second preset clearance.

Preferably, the inner cavity of the installation groove has a certain height, and the height of the inner cavity of the installation groove is greater than the height of the limiting portion.

Preferably, the inner frame assembly includes a plurality of inner frames disposed on the sides of the screen main body and corner connectors for fixedly connecting adjacent inner frames.

Preferably, two sliding members are provided on any of the inner frames.

Preferably, the inner frame assembly further includes a reinforcing frame, and two ends of the reinforcing frame are respectively fixed to two opposite inner frames.

Preferably, the soft-screen projection screen installation member further includes an outer frame assembly, and the outer frame assembly includes outer frames respectively disposed on the surrounding sides of the inner frame assembly and corner wrapping pieces for fixedly connecting adjacent outer frames.

Preferably, the outer frame includes a first side wall, and a second bottom wall and a third bottom wall that are respectively bent and extended in the same direction from two opposite edges of the first side wall. The three bottom walls and the first side wall together form a clamping groove, and the end of the third bottom wall away from the first side wall is bent to the inner side of the clamping groove, and the inner frame assembly and the soft screen projection screen are bent. The peripheral edge of the component is clamped in the clamping groove.

Preferably, a positioning boss is provided on the attachment surface of the corner wrapping piece and the outer frame for coordinating insertion into the inner side of the outer frame.

Compared with the related art, the soft screen projection screen installation member provided by the present invention includes a soft screen projection screen assembly and an inner frame assembly. The soft screen projection screen assembly includes a screen main body and a positioning member disposed on the periphery of the screen main body. The inner frame assembly includes an inner frame, a sliding member and an adjusting member. The sliding member and the positioning member are detachable to hang the screen main body on the inner frame assembly, and the inner frame has an edge along the inner frame. An installation groove extending in its length direction, the sliding piece is clamped in the installation groove, and can slide along the length direction of the inner frame in the installation groove, so as to align the inner frame in the length direction of the inner frame. The screen body provides tensioning force; the bottom of the installation slot is provided with an installation through hole, and the adjustment piece passes through the installation through hole and abuts with the sliding piece, so as to make the sliding piece move along the edge The movement is perpendicular to the length direction of the inner frame, so as to provide a tension force to the screen main body in the length direction perpendicular to the inner frame. In the above structure, the screen is tensioned by sliding the sliding member along the installation groove, and the sliding member is driven to move in the direction perpendicular to the inner frame of the screen in the direction of the screen plane through the structure in which the adjusting member passes through the installation hole and is in contact with the sliding member. , so that the screen can be tensioned to a greater extent, and the flatness can be obtained. At the same time, the use of adjustable tension adjustment parts makes up for the defect that the tension cannot be adjusted by the fixed elastic force after the tension structure of the elastic part is tensioned, and can be flexibly adjusted according to needs Adjusts the tension on the screen.

【Description of drawings】

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the front view of a kind of soft screen projection screen installation member of the present utility model;

2 is a front view and a side view of the soft screen projection screen assembly of the present invention;

3 is a front view of the inner frame assembly of the present invention;

4 is a schematic structural diagram of a sliding member of the present invention;

Fig. 5 is the structural representation of the inner frame of the utility model;

6 is a side view of the inner frame assembly of the present invention;

7 is a rear view of the inner frame assembly of the present invention;

8 is a schematic diagram of the assembly structure of the soft screen projection screen assembly and the inner frame assembly of the present invention;

9 is a rear view of another inner frame assembly of the present invention;

10 is a front view of another soft screen projection screen installation member of the present invention;

11 is a schematic structural diagram of an outer frame assembly of the present invention;

12 is a left side view of the upper outer frame of the utility model;

FIG. 13 is a schematic structural diagram of the corner wrapping piece of the present invention.

【detailed description】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-2 at the same time, a soft screen projection screen installation member 1 provided by an embodiment of the present invention includes a soft screen projection screen assembly 10 and an inner frame assembly 11. The soft screen projection screen assembly 10 can be suspended and fixed on the inner frame assembly 11 .

(a) and (b) of FIG. 2 are a front view and a side view of the soft screen projection screen assembly 10, respectively. The soft screen projection screen assembly 10 includes a screen main body 100 and a positioning member 101 disposed on the periphery of the screen main body 100. , the screen main body 100 is fixed with the inner frame assembly 11 through the positioning member 101 .

The screen main body 100 and the positioning member 101 may be detachably connected, or may be integrally provided. In this embodiment, the positioning member 101 is a PC backing board, and the PC backing board is evenly bonded around the screen main body 100 , so that the screen main body 100 and the PC backing board are fixed as a whole.

Referring to FIG. 3 , the inner frame assembly 11 includes an inner frame 12 with an installation groove 121 extending along its length direction, a sliding member 13 and an adjustment member 14 matched with the installation groove 121 .

The positioning member 101 forms a detachable connection with the sliding member 13; the sliding member 13 is inserted into the installation groove 121 and forms a sliding connection with the inner frame 12; the installation groove 121 is provided with a bottom The adjustment through hole 1211 is arranged in coordination with the adjustment member 14 . The adjustment member 14 passes through the adjustment through hole 1211 from the side of the inner frame 12 away from the accommodating sliding member 13 to the bottom of the sliding member 13 . catch.

The screen main body 100 is fixed with the inner frame assembly 11 through the detachable connection between the positioning member 101 and the sliding member 13 . Please refer to FIG. 2( a )- FIG. 4 , in this embodiment, the positioning member 101 is provided with a positioning hole 1011 , and the sliding member 13 includes an integrally provided limiting portion 130 and a positioning hole 130 located in the limiting portion. The sliding part 131 above the 130 is provided with a positioning convex shaft 132 at the position corresponding to the positioning hole 1011 on the surface of the sliding part 131 close to the surface of the soft screen projection screen assembly 10, and the positioning convex shaft 132 is inserted into the positioning hole 1011 at the corresponding position. The inner frame assembly 11 and the soft screen projection screen assembly 10 are detachably connected.

It should be noted that a positioning convex shaft may also be provided on the side of the positioning member 101 close to the sliding member 13 , and a positioning hole may be provided at a corresponding position of the sliding member 13 . That is, any one of the positioning member 101 and the sliding member 13 may be provided with a positioning protrusion, and the other may be provided with a positioning hole for inserting the positioning protrusion.

Please refer to FIG. 5 and FIG. 6 . In this embodiment, the sliding member 13 is inserted into the mounting slot 121 to slide and move parallel to the extending direction of the inner frame 12 . The installation groove 121 is arranged in coordination with the sliding member 13, so that the sliding member 13 can be inserted from one end of the installation groove 121 to form a sliding connection with the installation groove 121, and at the same time the sliding member 13 is clamped on the installation groove 121. The installation groove 121 restricts it from leaving the installation groove 121 . In this embodiment, the sliding member 13 includes a limiting portion 130 integrally provided and a sliding portion 131 located above the limiting portion 130 . The width of the limiting portion 130 is greater than the width of the sliding portion 131 . Correspondingly, the mounting groove 121 is approximately in an inverted "T" shape. The inverted "T"-shaped installation groove 121 includes an installation groove cavity 121b and an installation groove upper opening 121a. , the height of the inner cavity 121a of the installation groove is greater than the height of the limiting portion 120, so that the sliding member 13 clamped in the installation groove 121 can not only slide parallel to the extending direction of the inner frame 12 to generate displacement, but also can Displacement is generated in the direction perpendicular to the extending direction of the inner frame 12 . It can be understood that, in the inverted "T"-shaped installation groove structure, the width of the inner cavity 121b of the installation groove is greater than the width of the upper opening 121a of the installation groove. The width of the upper opening 121a of the installation slot and the width of the sliding portion 131 are set with a first predetermined clearance fit, and the width of the installation slot cavity 121b and the width of the limiting portion 120 are set with a second predetermined clearance fit , to limit the excessive displacement of the sliding member 13 in the direction perpendicular to the inner frame 12 , so as to be separated from the installation groove 121 .

Preferably, both the first preset gap and the second preset gap are selected to be 0.1 mm. Preferably, the preset height interval is 5mm, so that the sliding member 13 can slide in the direction of the inner frame 12 in the screen plane, and move in the direction perpendicular to the inner frame 12 in the screen plane without breaking away Mounting slot 121 .

In this embodiment, the sliding member is a long strip. It should be noted that the sliding member 13 and the installation groove 121 of the present invention can be arranged in different structural shapes, and the present invention is not limited to this.

The bottom of the installation slot 121 is also provided with an installation through hole 1211 , and the adjustment member 14 penetrates the installation through hole 1211 from the side of the inner frame 12 away from the accommodating sliding member 13 to abut against the sliding member 13 . catch. An external force is applied to the adjusting member 14 , so that the adjusting member 14 is displaced in the passing direction, thereby driving the sliding member 13 to move in the screen plane perpendicular to the extending direction of the inner frame 12 .

In this embodiment, the adjusting member 14 is an adjusting screw, and an adjusting handle 141 is provided at one end of the adjusting screw. The through hole 1211 is in contact with the sliding member 13 , and the adjustment screw is threadedly connected to the installation through hole 1211 . Rotating the adjusting handle 141 of the adjusting screw can make the adjusting screw move up and down, thereby pushing the sliding member 13 to produce displacement in the threading direction (Y direction in FIG. 6 ).

Referring to FIG. 7 , the inner frame assembly 11 includes an inner frame 12 disposed on each side of the inner frame assembly 11 and a corner connector 15 for fixedly connecting adjacent inner frames 12 .

The inner frame assembly 11 has a frame shape corresponding to the outer contour of the screen. In this embodiment, the screen is a rectangle, and the inner frame assembly 11 is also a rectangle. 12a and two short frames 12b, and the adjacent long and short inner frames are tightly connected by corner connectors 15. It can be understood that the screen can be any shape other than a rectangle, and the corresponding inner frame assembly can also have any shape other than a rectangle. At the same time, the fastening connection of the adjacent inner frames can be fixed by corner connectors or directly used. The fasteners are connected, and the present invention is not limited to this.

The soft screen projection screen mounting member 1 of the embodiment of the present invention will be described in detail below with reference to FIG. 8 . The soft screen projection screen assembly 10 is placed above the inner frame assembly 11, and a plurality of sliding members 13 are evenly distributed on the inner frame 12 arranged on each side of the inner frame assembly 11. At this time, the limit of the sliding members 13 The bottom surface of the part 130 is in contact with the bottom wall of the inner cavity of the installation groove 121 , that is, at this time, the position of the sliding member 13 in the installation groove 121 is at the lowest point. By inserting the positioning protrusions 132 of the sliding member 13 into the positioning holes 1011 at corresponding positions on the soft screen projection screen assembly 10 , the soft screen projection screen assembly 10 can be accurately connected and positioned to the sliding member 13 .

In this embodiment, the positioning holes 1011 on the soft screen projection screen assembly 10 are evenly distributed at certain preset intervals, and three positioning convex shafts 122 are arranged on each sliding member 13 at corresponding intervals, on the same inner frame 12 The plurality of sliding members 13 are evenly distributed so that any positioning hole on the soft screen projection screen assembly 10 has a positioning convex shaft 132 correspondingly connected to it. It can be understood that any number of positioning protruding shafts 132 can be provided on each sliding member 13, the number of sliding members 13 on the same inner frame 12 can be any number greater than or equal to 2, and the selected number of sliding members 13 satisfies the The same inner frame 12 is evenly distributed, and the positioning protruding shafts 132 provided on each sliding member 13 can be inserted into the corresponding positioning holes 1011 . Preferably, two sliding members 13 are arranged on the same inner frame 12 , and the sliding members 13 are respectively arranged at both ends of the inner frame 12 . In this case, the number of sliding members 13 is reduced and the installation is easier.

It should be noted that a positioning convex shaft may also be provided on the side of the soft screen projection screen assembly 10 close to the inner frame 12 , and a positioning hole may be provided at a corresponding position of the sliding portion 131 . That is, one of the positioning member 101 and the sliding member 121 is provided with a positioning protrusion, and the other is provided with a positioning hole for inserting the positioning protrusion.

After the soft screen projection screen assembly 10 is connected and positioned to the sliding member 13, adjust the sliding members 13 adjacent to the four corners of the inner frame 12 to slide toward the corners, so as to stretch the screen in the extending direction of the inner frame 12, and simultaneously By adjusting the adjusting member 14 (not shown) disposed on the back of the screen, the sliding member 13 is driven to move in the direction perpendicular to the inner frame 12 in the screen plane, so that the screen is stretched in the direction perpendicular to the extension direction of the inner frame 12. Tighten the screen body to the required flatness, and fix the position of the adjustment member 14 to complete the installation and tension of the soft screen projection screen. The adjustment member 14 in this embodiment adopts a jacking structure instead of the commonly used elastic member stretching structure, which makes up for the After the elastic tension structure is tightened, the elastic force cannot adjust the tension. The tension can be adjusted according to the needs to achieve the designed flatness of the screen. Afterwards, adjust the position of the sliding member 13 at other positions on the inner frame 12 in the same way, so that the tension on each position of the entire screen is uniform, and the screen is not damaged due to excessive tension in a certain place.

Further, please refer to FIG. 9 , the inner frame assembly 11 may also include a reinforcing frame 16, and the two ends of the reinforcing frame 16 are respectively connected to the two opposite inner frames 12 by fasteners, further increasing the inner frame 12 stability.

Further, as shown in FIG. 10 to FIG. 11 , the soft screen projection screen installation member of the present invention further includes an outer frame assembly 17 . The frame 18 and the corner wrapping piece 19 used to fix and connect the adjacent outer frame 18 . Referring to FIG. 12 , any one of the outer frames 18 includes a first side wall 181 and a second bottom wall 182 and a third bottom wall 183 which are respectively bent and extended in the same direction by two opposite edges of the first side wall 181 . , the second bottom wall 182, the third bottom wall 183 and the first side wall 181 together form a clamping groove 184, and the third bottom wall 183 is bent away from the end of the first side wall to the inner side of the clamping groove 184 folded, so that the peripheral edges of the inner frame assembly 11 and the soft screen projection screen assembly 10 are clamped in the clamping groove 184, wherein the second bottom wall 182 abuts the inner frame assembly 11, and the third bottom wall The wall 183 abuts and fixes the soft screen projection screen assembly 10 . Please refer to FIG. 13 , the corner wrapping piece 19 is used for wrapping and connecting two adjacent outer frames 18 . In order to play the role of decorative appearance, the outer surface of the corner wrapping piece 19 is flat with the outer surfaces of the two adjacent outer frames. Attachment, that is, the cross-sectional shape of the attachment surface 191 of the corner wrap 19 and any outer frame 18 is consistent with the cross-sectional shape of the outer frame 18, and a positioning boss is provided on the attachment surface 191 for coordinating and inserting the outer frame. The inner side of 18 plays the role of fixed connection.

After the outer frame 18 is assembled and wrapped around the peripheral edge of the inner frame 12, fasteners are used to respectively pass through the through holes on the second bottom wall of the outer frame 18 and the through holes at the corresponding positions of the inner frame 12, thereby tightening and tightening the outer frame. Frame assembly 17 and inner frame assembly 11.

In addition, according to the present invention, the adjustment member 14 is only arranged on the back of the soft screen projection screen, and most of the adjustment member 14 is arranged and accommodated in the inner frame 12, and the space design does not occupy the position of the outer frame 18, correspondingly The size of the entire outer frame assembly 17 can be reduced, which is favorable for designing a narrow frame structure.

Compared with the related art, the utility model provides a soft screen projection screen installation member, which includes a soft screen projection screen assembly and an inner frame assembly. The soft screen projection screen assembly includes a screen main body and a positioning member disposed on the periphery of the screen main body. The inner frame assembly includes an inner frame, a sliding member and an adjusting member. The sliding member and the positioning member are detachable to hang the screen main body on the inner frame assembly, and the inner frame has an edge along the inner frame. An installation groove extending in its length direction, the sliding piece is clamped in the installation groove, and can slide along the length direction of the inner frame in the installation groove, so as to align the inner frame in the length direction of the inner frame. The screen body provides tensioning force; the bottom of the installation slot is provided with an installation through hole, and the adjustment piece passes through the installation through hole and abuts with the sliding piece, so as to make the sliding piece move along the edge The movement is perpendicular to the length direction of the inner frame, so as to provide a tension force to the screen main body in the length direction perpendicular to the inner frame. In the above structure, the screen is tensioned by sliding the sliding member along the installation groove, and the lifting structure of the adjusting member drives the sliding member to move in the direction perpendicular to the inner frame in the screen plane, so as to tension the screen to a greater extent, and obtain Higher flatness, and at the same time, the use of tension-adjustable adjustment parts makes up for the defect that the tension cannot be adjusted by the fixed elastic force after the elastic part is stretched, and the tension of the screen can be flexibly adjusted according to needs.

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to The scope of protection of the utility model.

Claims

A soft-screen projection screen installation component, characterized in that it includes a soft-screen projection screen assembly and an inner frame assembly, wherein:

The soft screen projection screen assembly includes a screen main body and a positioning member disposed on the periphery of the screen main body;

The inner frame assembly includes an inner frame, a sliding member and an adjusting member;

The sliding member and the positioning member are detachable to hang the screen main body on the inner frame assembly;

The inner frame has an installation groove extending along its length direction, and the sliding piece is clamped in the installation groove and can slide along the length direction of the inner frame in the installation groove to slide in the inner frame. providing tension to the screen body in the length direction of the frame;

An installation through hole is arranged at the bottom of the installation slot, and the adjustment piece is penetrated through the installation through hole and abuts with the sliding piece, so that the sliding piece can move along the length direction perpendicular to the inner frame. move up to provide tension to the screen main body in a direction perpendicular to the length of the inner frame.
The soft screen projection screen installation member according to claim 1, wherein the positioning member is a PC backing plate fixed and integral with the screen main body.
The soft screen projection screen mounting member according to claim 1, wherein one of the positioning member and the sliding member is provided with a positioning convex shaft, and the other is provided with a positioning convex shaft for inserting the positioning convex shaft positioning hole.
The soft-screen projection screen installation member according to claim 1, wherein the installation groove structure and the sliding member structure are arranged in coordination, and the sliding member includes a limit portion provided integrally and located above the limit portion. The sliding part of the installation groove includes an inner cavity of the installation groove and an upper opening of the installation groove.
The flexible screen projection screen mounting member according to claim 4, wherein the width of the limiting portion is greater than the width of the sliding portion, and the width of the inner cavity of the mounting groove is greater than the width of the upper opening of the mounting groove.
The flexible screen projection screen installation component according to claim 5, wherein the width of the inner cavity of the installation groove and the width of the limiting portion are set according to a first preset clearance; The width of the sliding portion is set according to the second preset clearance fit.
The soft screen projection screen installation member according to claim 4, wherein the height of the inner cavity of the installation groove is greater than the height of the limiting portion.
The soft-screen projection screen installation member according to claim 1, wherein the inner frame assembly comprises a plurality of inner frames disposed on the side of the screen main body and corner connections for fixedly connecting adjacent inner frames pieces.
The soft-screen projection screen installation member according to claim 1, wherein two sliding members are provided on any of the inner frame.
The soft screen projection screen installation member according to claim 1, wherein the inner frame assembly further comprises a reinforcing frame, and two ends of the reinforcing frame are respectively fixed to two opposite inner frames.
The soft-screen projection screen installation member according to claim 1, wherein the soft-screen projection screen installation member further comprises an outer frame assembly, and the outer frame assembly includes outer frame members respectively disposed on the surrounding sides of the inner frame assembly. Frames and corners used to fix and connect adjacent outer frames;

The outer frame includes a first side wall, a second bottom wall and a third bottom wall that are respectively bent and extended along the same direction by two opposite edges of the first side wall. The second bottom wall and the third bottom wall are A clamping groove is formed together with the first side wall, and the third bottom wall is bent away from the end of the first side wall to the inner side of the clamping groove, and the peripheral edge of the inner frame assembly and the soft screen projection screen assembly is bent. be clamped in the clamping groove;

A positioning boss is provided on the attachment surface of the corner wrapping piece and the outer frame, for coordinating insertion into the inner side of the outer frame.