WO2021159887A1

WO2021159887A1 - Projection screen device

Info

Publication number: WO2021159887A1
Application number: PCT/CN2020/142114
Authority: WO
Inventors: 李士杰; 唐泽达; 赵振宇; 王霖; 胡飞
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2020-02-12
Filing date: 2020-12-31
Publication date: 2021-08-19
Also published as: CN211956104U; CN213457636U

Abstract

A projection screen device (300), comprising a projection screen (200) and a screen fixing and adjusting device (100). The screen fixing and adjusting device (100) comprises a screen fixing mechanism (1) and a connecting and adjusting mechanism (2); the connecting and adjusting mechanism (2) is used for adjusting the displacement of the screen fixing mechanism (1) in a second direction so as to adjust the displacement of the projection screen (200) in the second direction, and the connecting and adjusting mechanism (2) is provided with an elongate first waist-shaped hole (2211) extending in a third direction; the screen fixing mechanism (1) comprises an angle clamp (11) abutting against the projection screen (200) and a connecting piece (12) extending in a direction from the angle clamp (11) to the connecting and adjusting mechanism (2). The connecting piece (12) is inserted into the first waist-shaped hole (2211) to form sliding connection for adjusting the displacement of the projection screen (200) in a first direction and the third direction. The first direction is perpendicular to the projection screen (200), and every two of the first direction, the second direction and the third direction are perpendicular to each other. The projection screen device (300) has the advantages of being adjustable in three-dimensional degrees of freedom, capable of adjusting the flatness of the whole screen, light in weight and easy to transport and install.

Description

Projection screen device

【Technical Field】

The utility model relates to the technical field of projection screens, in particular to a projection screen device.

【Background technique】

With the continuous improvement of people's living standards, large-size projection screens are becoming more and more popular.

The related art projection screen device includes a projection screen and a fixing device for installing and fixing the projection screen on a wall.

However, the current projection screen devices are generally hard screen devices or soft screen devices. Hard screen devices, such as ultra-short throw Fresnel light-resistant projection screens of 100 inches and above, usually use high-hardness backplanes and use assembly processes such as lamination to fix the Fresnel screen. This installation method can ensure the flatness of the screen, thereby ensuring the viewing effect of high-quality projection display, but when the wall is uneven or inclined, the traditional backplane installation method may not be able to ensure the good flatness of the screen. In addition, because the backplane uses metal materials such as honeycomb aluminum, the overall weight is large, and the screen cannot be bent, causing greater difficulties in installation and transportation. The soft screen device generally adopts the scheme of projection screen and screen frame. The frame relies on springs to provide uniform distribution of the four sides of the projection screen, thereby providing the tension of the projection screen. The transportation, installation and handling process is more troublesome.

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

[Utility model content]

The purpose of the utility model is to overcome the above technical problems and provide a projection screen device with three-dimensional freedom adjustable, adjustable overall screen flatness, light weight and easy to transport and install.

In order to achieve the above objective, the present invention provides a projection screen device, which includes a projection screen and a screen fixing and adjusting device; the screen fixing and adjusting device includes a screen fixing mechanism fixed to the projection screen and connected to the screen fixing mechanism Used to install a connection adjustment mechanism fixed on the target surface;

The connection adjustment mechanism is used to adjust the displacement of the screen fixing mechanism in the second direction to adjust the displacement of the projection screen in the second direction, and the connection adjustment mechanism is provided with an extension in the third direction The first waist-shaped hole with a long strip shape;

The screen fixing mechanism includes an angle clamp that abuts on the projection screen and a connecting piece extending from the angle clamp in the direction of the connection adjustment mechanism, and the connecting piece is inserted into the first waist-shaped hole to form a sliding connection Used to adjust the displacement of the projection screen in a first direction and a third direction; wherein the first direction is perpendicular to the projection screen, and the first direction, the second direction, and the third direction are two The two are perpendicular to each other.

More preferably, the screen fixing mechanism further includes a fastener, which passes through the corner clip and abuts against the projection screen and fixes the projection screen to the corner clip.

More preferably, the angle clip includes a first angle clip extending along the second direction and a second angle clip extending along the third direction, and one end of the first angle clip is perpendicularly connected to the second angle clip. One end of an angle clamp, the first angle clamp and the second angle clamp respectively fix two adjacent sides of a corner of the projection screen;

The connection adjustment mechanism includes a fixing block with a card slot installed to be fixed on the target object surface and a sliding block installed in the card slot to form a sliding connection, and the card slot extends along the second direction Provided, the first waist-shaped hole is provided on the slider;

The sliding block is slid and fixed in the second direction in the card slot to adjust the displacement of the screen fixing mechanism in the second direction.

More preferably, the screen fixing mechanism further includes a reinforcing plate respectively connected to the first corner clip and the second corner clip, the connecting member is provided on the reinforcement plate, and the reinforcement plate is provided on the first corner clip. A corner clip and the second corner clip are on the same side along the first direction, and the projection screen is installed on a side of the reinforcing plate away from the connecting member.

More preferably, the fastener includes a first fastener and a second fastener;

The first angle clamp includes a first receiving groove extending along the second direction and a first fixing hole passing through the first fixing hole, the first fixing hole communicates with the first receiving groove, and the first fastening A piece is inserted into the first fixing hole to form a fixing structure;

The second angle clamp includes a second receiving groove extending along the third direction and communicating with the first receiving groove and a second fixing hole penetrating therethrough. The second fixing hole is connected to the second receiving groove. The grooves are connected, and the second fastener is inserted into the second fixing hole to form a fixing structure;

One corner of the projection screen is inserted into the first accommodating groove and the second accommodating groove, and the first fastener extends into the first accommodating groove and fixes the projection screen to the In the first receiving slot, the second fastener extends into the second receiving slot and fixes the projection screen in the second receiving slot.

More preferably, the first fastener includes multiple, and the second fastener includes multiple.

More preferably, the first corner clip further includes a first extruding strip, defining an end of the first accommodating groove away from the second accommodating groove as a first open end, and the first extruding strip is formed by the The first open end is inserted into the first receiving groove and abuts against the projection screen, and the first fastener abuts against the first extruding bar so that the first extruding bar will hold the The projection screen is fixed;

The second angle clip further includes a third extruding strip, defining the end of the second receiving groove away from the first receiving groove as a second open end, and the third extruding strip is formed by the second open end. Inserted into the second receiving groove and abutted against the projection screen, and the second fastener abutted against the third extruding bar so that the third extruding bar fixes the projection screen .

More preferably, the first fixing hole includes two, the first fastener includes two, and each of the first fasteners is inserted into a corresponding one of the first fixing holes, and the first corner The clip further includes a second pressing bar, the first pressing bar and the second pressing bar are respectively inserted into the first receiving groove from the first open end and clamp the projection screen, The two first fasteners abut against the first extrusion strip and the second extrusion strip respectively to cause the first extrusion strip and the second extrusion strip to generate frictional force and hold the The projection screen is fixed;

The second fixing hole includes two, the second fastener includes two, each of the second fasteners is inserted into a corresponding one of the second fixing holes, and the second angle clamp also includes a first Four extrusion bars, the third extrusion bar and the fourth extrusion bar are respectively inserted into the second receiving groove from the second open end and sandwich the projection screen, two The second fasteners respectively abut against the third extrusion bar and the fourth extrusion bar to cause the third extrusion bar and the fourth extrusion bar to generate friction to fix the projection screen .

More preferably, the connection adjustment mechanism further includes a limiting member fixed to the fixing block and extending into the slot along the second direction, and the limiting member abuts and is fixed to the sliding block close to One side of the center of the projection screen is used to adjust the displacement of the screen fixing mechanism in the second direction.

More preferably, the connecting member includes a first connecting member and a second connecting member spaced apart from each other;

The sliding block includes a first sliding block, a second sliding block arranged on a side of the first sliding block away from the center of the projection screen, and connected to the first sliding block and the second sliding block respectively. Fasten the studs,

The first waist-shaped hole penetrates through the first sliding block, the second sliding block is provided with a second waist-shaped hole penetrated therethrough, and the second waist-shaped hole extends along the third direction and In a long strip shape, the first connecting member is inserted into the first waist-shaped hole, and the second connecting member is inserted into the second waist-shaped hole;

The first sliding block and the second sliding block are fixed by the fastening studs, and the fastening studs adjust the distance between the first waist-shaped hole and the second waist-shaped hole and make the The distance is smaller than the distance between the first connecting piece and the second connecting piece so that the connecting piece is fixed to the slider;

The depth of the first connecting member inserted into the first waist-shaped hole in the first direction and the depth of the second connecting member inserted into the second waist-shaped hole in the first direction are used to adjust the The displacement of the projection screen along the first direction;

The position where the first connecting member is inserted into the first waist-shaped hole in the third direction and the position where the second connecting member is inserted into the second waist-shaped hole in the third direction are used to adjust the The displacement of the projection screen along the third direction.

More preferably, the outer surface of at least one end of the fastening stud is provided with an external thread;

The first sliding block is further provided with a first through hole penetrating therethrough along the second direction, and the inner wall of the first through hole is provided with an internal thread that cooperates with the external thread;

The second sliding block is further provided with a second through hole penetrating therethrough along the second direction, and the second through hole is arranged directly opposite to the first through hole;

The fastening stud is inserted into the second through hole and the other end of the fastening stud is clamped outside the second through hole, and the fastening stud is inserted into the first through hole after passing through the second through hole The external thread is engaged with the internal thread to be fixed to the first sliding block, and the fastening stud is rotated forward and backward to adjust the length of its insertion into the first through hole to make the connection The piece is fixed to the slider.

More preferably, the connecting member further includes a third connecting member spaced apart from the first connecting member and the second connecting member; the second sliding block is further provided with a third waist-shaped hole penetrating therethrough , The third waist-shaped hole extends along the third direction and is elongated, the third waist-shaped hole is spaced from the second waist-shaped hole, and the third connecting member is inserted into the third waist-shaped hole. Waist hole.

Compared with the prior art, the projection screen device of the present invention is installed and fixed on the target surface by a connection adjustment mechanism, the projection screen is fixed by the screen fixing mechanism, and the projection screen is tightened in the second direction and the third direction respectively. Stretch flat as a plane. The structure realizes that the projection screen is installed as a plane suitable for viewing, the structure is simple and easy to install, and the projection screen can be rolled and packaged, so that the projection screen device is light in weight and easy to transport. More preferably, the connecting piece of the screen fixing mechanism is installed and fixed to the first waist-shaped hole of the connecting adjustment mechanism, so that the screen fixing mechanism and the connection adjustment mechanism form a sliding connection for adjusting the projection screen along the first direction and the third direction. Displacement. The structure realizes the three-dimensional freedom adjustment and the adjustment of the overall screen flatness through the connecting piece and the first waist-shaped hole.

【Explanation of the drawings】

In order to more clearly explain the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present utility model. For example, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Figure 1 is a schematic diagram of the installed state of the projection screen device of the present invention;

FIG. 2 is a schematic diagram from another angle of FIG. 1;

Figure 3 is a schematic diagram of the rolling state of the projection screen device of the present invention;

4 is a schematic diagram of the three-dimensional structure of the screen fixing and adjusting device of the screen projection screen device of the present invention;

5 is a partial three-dimensional structure diagram of the screen fixing mechanism of the screen projection screen device of the present invention;

6 is a partial three-dimensional structure diagram of the screen fixing mechanism of the screen projection screen device of the present invention from another angle;

Fig. 7 is a partial three-dimensional structural diagram of the connection adjustment mechanism of the screen projection screen device of the present invention;

Fig. 8 is a schematic diagram of the first embodiment of the screen projection screen of the utility model fixed to the screen fixing mechanism;

Fig. 9 is a schematic diagram of the second embodiment of the screen projection screen of the utility model fixed to the screen fixing mechanism;

10 is a schematic diagram of the third embodiment of the screen projection screen of the utility model fixed to the screen fixing mechanism;

11 is a schematic diagram of the fourth embodiment of the screen projection screen fixed to the screen fixing mechanism of the present invention;

12 is a schematic diagram of Embodiment 5 of the screen projection screen of the utility model fixed to the screen fixing mechanism;

FIG. 13 is a schematic diagram of the sixth embodiment of the screen projection screen of the present invention is fixed to the screen fixing mechanism.

【Detailed ways】

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with 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, not all of them. Examples. Based on the embodiments of the present utility model, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

Please refer to FIGS. 1-7 at the same time. The present invention provides a projection screen device 300. The projection screen device 300 includes a rectangular projection screen 200 and a screen fixing and adjusting device 100.

The projection screen 200 may be a flexible projection screen or a rigid projection screen. In this embodiment, the projection screen 200 is a flexible projection screen. The projection screen 200 can be crimped and packaged along the short side, which is convenient for transportation and installation. Therefore, the projection screen 200 has the advantages of light weight, crimp packaging, and reduced transportation volume.

For better description, the directions of the two sides of the plane of the installed projection screen 200 are respectively defined as the second direction X and the third direction Y, and the direction from the projection screen 200 to the target object plane (not shown) is The first direction Z and the second direction X are the extending direction of the long side of the projection screen 200; the third direction Y is the extending direction of the short side of the projection screen 200. In this embodiment, the first direction Z is perpendicular to the projection screen 200, and the first direction Z, the second direction X, and the third direction Y are perpendicular to each other.

The screen fixing adjustment device 100 includes a screen fixing mechanism 1 and a connection adjustment mechanism 2. The screen fixing mechanism 1 is connected with the connection adjustment mechanism 2. Among them, the connection adjustment mechanism 2 is used for mounting and fixing on the target surface. The screen fixing mechanism 1 is used to adjust the displacement of the projection screen 200 in one direction.

In this embodiment, the screen fixing mechanism 1 includes four, and the connection adjustment mechanism 2 includes four. The four screen fixing mechanisms 1 are respectively fixed at the positions of the four corners of the projection screen 200. The four screen fixing mechanisms 1 fix and stretch the projection screen 200 into a plane. Wherein, each screen fixing mechanism 1 pulls the projection screen 200 away from the center of the projection screen 200 along the second direction X and the third direction Y respectively. This setting helps to maintain the flatness of the projection screen 200 and parallel to the ideal viewing plane.

Specifically, the screen fixing mechanism 1 includes an angle clamp 11 abutting on the projection screen 200 and a connecting member 12 extending from the angle clamp 11 in a direction connecting the adjustment mechanism 2.

The angle clamp 11 is used to fix the projection screen 200. In order to better fix the projection screen 200 to the angle clamp 11 and to make assembly easier, in this embodiment, the screen fixing mechanism 1 further includes a fastener 13. Specifically, the fastener 13 passes through the corner clip 11 and abuts against the projection screen 200 and fixes the projection screen 200 to the corner clip 11. Among them, the fastener 13 includes a first fastener 131 and a second fastener 132.

The angle clip 11 includes a first angle clip 111 extending along the second direction X and a second angle clip 112 extending along the third direction Y. One end of the first angle clip 111 is perpendicularly connected to one end of the second angle clip 112. The angle clamp 111 and the second angle clamp 112 respectively fix two adjacent sides of a corner of the projection screen 200.

The first angle clamp 111 includes a first receiving groove 1111 extending along the second direction X and a first fixing hole 1112 penetrating therethrough. The first fixing hole 1112 communicates with the first receiving groove 1111. The first fastener 131 is inserted into the first fixing hole 1112 to form a fixing structure.

The second angle clip 112 includes a second receiving groove 1121 extending along the third direction Y and communicating with the first receiving groove 1111 and a second fixing hole 1122 penetrating therethrough. The second fixing hole 1122 communicates with the second receiving groove 1121. The second fastener 132 is inserted into the second fixing hole 1122 to form a fixing structure.

One corner of the projection screen 200 is inserted into the first receiving slot 1111 and the second receiving slot 1121 respectively. The first fastener 131 extends into the first receiving groove 1111 and fixes the projection screen 200 in the first receiving groove 1111. The second fastener 132 extends into the second receiving groove 1121 and fixes the projection screen 200 in the second receiving groove 1121. The structure adopts a detachable installation mode structure, which is beneficial to repeated use and adjustment, and has a simple structure, which is beneficial to the installation of the projection screen 200 more firmly, thereby improving reliability.

The first fastener 131 includes a plurality, and the second fastener 132 includes a plurality. The plurality of first fasteners 131 and the plurality of second fasteners 132 facilitate the installation of the projection screen 200 more firmly, thereby improving reliability.

In order to better fix the projection screen 200 in the first receiving slot 1111 and the second receiving slot 1121. The first corner clip 111 also includes a first extruded strip 1113. The end of the first receiving groove 1111 far away from the second receiving groove 1121 is defined as the first open end. The first extrusion bar 1113 is inserted into the first receiving groove 1111 from the first open end and abuts against the projection screen 200. The first fastener 131 abuts against the first extrusion bar 1113 so that the first extrusion bar 1113 The projection screen 200 is fixed. The second angle clip 112 further includes a third extruding strip 1123, which defines an end of the second receiving groove 1121 away from the first receiving groove 1111 as a second open end. The third extrusion strip 1123 is inserted into the second receiving groove 1121 from the second open end and abuts against the projection screen 200, and the second fastener 132 abuts against the third extrusion strip 1123 so that the third extrusion strip 1123 The projection screen 200 is fixed.

In this embodiment, the first angle clip 111 further includes a second extrusion strip 1114. The first extrusion bar 1113 and the second extrusion bar 1114 are used to better fix the projection screen 200 in the first receiving groove 1111. In addition, the second corner clip 112 further includes a fourth extrusion strip 1125. The third extrusion strip 1123 and the fourth extrusion strip 1125 are used to better fix the projection screen 200 in the second receiving groove 1121.

In this embodiment, the first fixing hole 1112 includes two. The first fastener 131 includes two. Each first fastener 131 is inserted into a corresponding first fixing hole 1112. The first pressing bar 1113 and the second pressing bar 1114 are respectively inserted into the first receiving groove 1111 from the first open end and sandwich the projection screen 200. The two first fasteners 131 abut against the first pressing bar 1113 and the second pressing bar 1114 respectively so that the first pressing bar 1113 and the second pressing bar 1114 generate friction to fix the projection screen 200. This structure facilitates the simple operation of installing the projection screen 200, and improves the reliability of fixing the projection screen 200.

In this embodiment, the second fixing hole 1122 includes two. The second fastener 132 includes two. Each second fastener 132 is inserted into a corresponding second fixing hole 1122. The third pressing bar 1123 and the fourth pressing bar 1125 are respectively inserted into the second receiving groove 1121 from the second open end and sandwich the projection screen 200. The two second fasteners 132 abut against the third pressing bar 1123 and the fourth pressing bar 1125 respectively, so that the third pressing bar 1123 and the fourth pressing bar 1125 generate friction to fix the projection screen 200. This structure facilitates the simple operation of installing the projection screen 200, and improves the reliability of fixing the projection screen 200.

In this embodiment, the first fastener 131 is a stud, and the second fastener 132 is a stud.

In this embodiment, the shapes of the first receiving groove 1111 and the second receiving groove 1121 perpendicular to their cross-sections are both wedge-shaped, and the first pressing bar 1113 and the second pressing bar 1114 are inserted into the first receiving groove 1111 to form a whole The shape matches the first accommodating groove 1111; the third extrusion strip 1123 and the fourth extrusion strip 1125 are inserted into the second accommodating groove 1121 to form an integral shape that matches the second accommodating groove 1121.

More preferably, the screen fixing mechanism 1 further includes a reinforcing plate 113 connected to the first angle clamp 111 and the second angle clamp 112 respectively. The connecting member 12 is provided on the reinforcing plate 113. The reinforcing plate 113 is arranged on the same side of the first angle clamp 111 and the second angle clamp 112 along the first direction Z. The projection screen 200 is installed on the side of the reinforcing plate 113 away from the connecting member 12. This arrangement is beneficial to make the appearance area of the first angle clip 111 and the second angle clip 112 smaller. The structure in which the reinforcing plate 113 is located behind the projection screen 200 is beneficial to improve the strength of the screen fixing mechanism 1 and also facilitates the installation of the projection screen 200. Thus, the area of the screen fixing mechanism 1 is larger than that of the front structure.

More preferably, the screen fixing and adjusting device 100 has an ultra-narrow-edge structure. In this embodiment, the width of the screen fixing and adjusting device 100 is less than 10 mm. This structure maximizes the viewing area of the projection screen 200.

The connecting member 12 includes a first connecting member 121 and a second connecting member 122 spaced apart from each other. The connecting member 12 is used to form a sliding connection with the connection adjustment mechanism 2, so that the screen fixing mechanism 1 and the connection adjustment mechanism 2 form a sliding connection for adjusting the displacement of the projection screen 200 in the first direction Z and the third direction Y.

The operation of installing the projection screen 200 is specifically as follows: the screen fixing mechanism 1 is arranged at the sharp corner of the screen of the projection screen 200, and at the same time fixes one long side and the adjacent short side of the projection screen 200. When fixing the curtain of the projection screen 200, first insert one corner of the projection screen 200 into the first corner clip 111 and the second corner clip 112 so that the two sides fit exactly, that is, insert one corner of the projection screen 200 into the first receiving slot 1111 and Inside the second receiving slot 1121. Then insert the first extrusion strip 1113 and the second extrusion strip 1114 into the first receiving groove 1111 and clamp the projection screen 200, the third extrusion strip 1123 and the fourth extrusion strip 1125 are inserted into the second receiving groove 1121 and The projection screen 200 is clamped, and the two first fasteners 131 abut against the first extrusion bar 1113 and the second extrusion bar 1114 respectively so that the first extrusion bar 1113 and the second extrusion bar 1114 generate frictional force The projection screen 200 is fixed. The two second fasteners 132 abut against the third pressing bar 1123 and the fourth pressing bar 1125 respectively, so that the third pressing bar 1123 and the fourth pressing bar 1125 generate friction to fix the projection screen 200.

In order to describe the specific manner of fixing the screen projection screen 200 to the screen fixing mechanism 1, the following six embodiments are used to describe in detail:

Example one:

Please refer to FIG. 8, the fastener 13 fixes the screen projection screen 200 along the first direction Z. Specifically, taking the first corner clip 111 as an example, one corner of the screen of the projection screen 200 is inserted into the first receiving groove 1111, and the first fastener 131 extends into the first receiving groove 1111 along the first direction Z and connects the projection screen 200 is fixed in the first receiving groove 1111.

Embodiment two:

Please refer to FIG. 9, two opposite fasteners 13 clamp and fix the projection screen 200 along the first direction Z. Specifically, taking the first corner clip 111 as an example, one corner of the screen of the projection screen 200 is inserted into the first receiving slot 1111, and two opposite first fasteners 131 respectively extend to the first receiving slot 1111 along the first direction Z The projection screen 200 is clamped and fixed in the first receiving slot 1111.

Example three:

Please refer to FIG. 10, two fasteners clamp and fix the screen projection screen 200 through two extrusion strips. Specifically, taking the first corner clip 111 as an example, one corner of the screen of the projection screen 200 is inserted into the first receiving slot 1111 respectively. Then insert the first extrusion strip 1113 and the second extrusion strip 1114 into the first receiving groove 1111 and clamp the projection screen 200, and the two first fasteners 131 abut against the first extrusion strip 1113 and the first extrusion strip 1113, respectively. The two extrusion bars 1114 make the first extrusion bar 1113 and the second extrusion bar 1114 generate friction to fix the projection screen 200.

Embodiment four:

Please refer to FIG. 11, the fourth embodiment is basically the same as the third embodiment, and the difference between the fourth embodiment and the third embodiment is that the fourth embodiment has only one first fastener 131 and second extruded strip 1114, and lacks a first One extrusion strip 1113. The first fastener 131 abuts against the second pressing bar 1114 so that the second pressing bar 1114 presses and fixes the projection screen 200 in the first receiving groove 1111.

Embodiment five:

Please refer to FIG. 12, the fifth embodiment is basically the same as the third embodiment, and the fourth embodiment is different from the third embodiment: the first angle clamp 111 is further provided with two first fixing

holes

1112 and 1112 extending in the first direction Z Two first fasteners 131, two opposite first fasteners 131 respectively extend into the first receiving groove 1111 along the first direction Z, and respectively abut against the first extrusion strip 1113 and the second extrusion The bars 1114 make the first pressing bar 1113 and the second pressing bar 1114 generate friction to fix the projection screen 200. That is, the four first fasteners 131 jointly squeeze the first extrusion bar 1113 and the second extrusion bar 1114 to fix the projection screen 200.

Embodiment 6:

Please refer to FIG. 13, the sixth embodiment is basically the same as the fourth embodiment. The sixth embodiment is different from the fourth embodiment: the first angle clamp 111 is also provided with a first fixing hole 1112 extending along the first direction Z and a The first fastener 131 extends into the first receiving groove 1111 along the first direction Z and abuts against the second extrusion strip 1114 so that the second extrusion strip 1114 generates a frictional force The projection screen 200 is fixed. That is, the two first fasteners 131 jointly squeeze the second extrusion strip 1114 to fix the projection screen 200.

The connection adjustment mechanism 2 is used to adjust the displacement of the screen fixing mechanism 1 in the second direction X, so as to adjust the displacement of the projection screen 200 in the second direction X. Specifically, the connection adjustment mechanism 2 includes a fixing block 21 with a card slot 210 installed to be fixed on the target object surface, a slider 22 installed in the card slot 210 and forming a sliding connection, and a fixed block 21 fixed to the fixed block 21 and along the second The direction X extends to the limiting member 23 in the slot 210. Wherein, the limiting member 23 abuts and is fixed to the side of the slider 22 close to the center of the projection screen 200 to adjust the displacement of the screen fixing mechanism 1 in the second direction X.

The card slot 210 extends along the second direction X.

The slider 22 slides and is fixed in the second direction X in the slot 210 to adjust the displacement of the screen fixing mechanism 1 in the second direction X. The connecting member 12 is installed and fixed to the depth of the sliding block 22 along the first direction Z and the position along the third direction Y to adjust the displacement of the projection screen 200 along the first direction Z and the third direction Y respectively.

Specifically, the slider 22 includes a first slider 221, a second slider 222 disposed on the side of the first slider 221 away from the center of the projection screen 200, and connected to the first slider 221 and the second slider 222, respectively. Fasten the stud 223.

The first sliding block 221 is provided with a first waist-shaped hole 2211 penetrating therethrough. The first waist-shaped hole 2211 extends along the third direction Y and is elongated. The first connecting member 121 is inserted into the first waist-shaped hole 2211.

The second sliding block 222 is provided with a second waist-shaped hole 2221 extending therethrough, and the second waist-shaped hole 2221 extends along the third direction Y and is elongated. The second connecting member 122 is inserted into the second waist-shaped hole 2221.

The first sliding block 221 and the second sliding block 222 are fixed by a fastening stud 223. The fastening stud 223 adjusts the distance between the first waist-shaped hole 2211 and the second waist-shaped hole 2221, and makes the distance smaller than the first connection The distance between the member 121 and the second connecting member 122 is such that the connecting member 12 is fixed to the slider 22. This arrangement enables the first slider 221 and the second slider 222 to fix the first connecting member 121 and the second connecting member 122 by friction, so as to realize the fixing of the screen fixing mechanism 1 to the connecting adjusting mechanism 2.

The following describes how the connecting member 12 and the slider 22 specifically adjust the positions of the screen fixing mechanism 1 in the first direction Z, the second direction X, and the third direction Y.

(1) Adjust the position of the screen fixing mechanism 1 in the first direction Z: the first connecting member 121 is inserted into the first waist-shaped hole 2211 in the first direction Z and the second connecting member 122 is inserted into the second waist in the first direction Z The depth of the shaped hole 2221 is used to adjust the displacement of the projection screen 200 along the first direction Z. That is to say, by adjusting the first connecting member 121 and the second connecting member 122 to realize the flatness of the projection screen 200 in the first direction Z by the four screen fixing mechanisms 1, so that the projection screen 200 can be adjusted to a plane suitable for viewing, thereby Adjust the flatness of the body screen.

(2) Adjust the position of the screen fixing mechanism 1 along the second direction X: connect the connecting piece 12 to the slider 22. Specifically, the first connecting member 121 is inserted into the first waist-shaped hole 2211. The second connecting member 122 is inserted into the second waist-shaped hole 2221. After adjusting the sliding position of the slider 22 in the second direction X, when the position of the second direction X is determined, the stopper 23 is abutted and fixed to the side of the slider 22 close to the center of the projection screen 200 to adjust the screen fixing mechanism 1 The displacement in the second direction X. Thus, the position of the screen fixing mechanism 1 in the second direction X is adjusted and fixed. The limiting member 23 restricts the position of the slider 22 in the second direction X and also realizes the flattening tension applied by the screen fixing mechanism 1 to the projection screen 200 in the second direction X.

(3) Adjust the position of the screen fixing mechanism 1 along the third direction Y: because the first waist-shaped hole 2211 extends along the third direction Y and is elongated; the second waist-shaped hole 2221 extends along the third direction Y and is elongated Bar. The position where the first connecting member 121 is inserted into the first waist-shaped hole 2211 along the third direction Y and the position where the second connecting member 122 is inserted into the second waist-shaped hole 2221 along the third direction Y are used to adjust the projection screen 200 along the third direction Y The displacement of, the position of the screen fixing mechanism 1 in the third direction Y can be adjusted, and the flattening tension applied by the screen fixing mechanism 1 to the projection screen 200 in the third direction Y is also realized.

In this embodiment, the connecting member 12 further includes a third connecting member 123 spaced apart from the first connecting member 121 and the second connecting member 122. The second slider 222 is also provided with a third waist-shaped hole 2223 penetrating therethrough. The third waist-shaped hole 2223 extends along the third direction Y and is elongated. The third waist-shaped hole 2223 and the second waist-shaped hole 2221 are spaced apart, and the third connecting member 123 is inserted into the third waist-shaped hole 2223. The first sliding block 221 is provided with a first waist-shaped hole 2211, and the second sliding block 222 is configured with a second waist-shaped hole 2221 and a third waist-shaped hole 2223 to prevent rotation and misalignment of the screen fixing mechanism 1. Therefore, the installation and assembly of the screen fixing and adjusting device 100 are simpler, and the reliability is also improved. Of course, it is not limited to this. It is also possible to configure the first slider 221 as two waist-shaped holes and the second slider 222 with one waist-shaped hole, which can also prevent the screen fixing mechanism 1 from rotating and misaligning. In other words, at least one of the first slider 221 and the second slider 222 needs to be configured as two or more waist-shaped holes. Correspondingly, the number of connectors should also match the corresponding waist-shaped holes.

In some embodiments, a plurality of waist-shaped holes of the same slider can also be penetrated into a waist-shaped hole with a greater length along the third direction Y, and the number of connecting pieces matching the waist-shaped hole is at least two to prevent The screen fixing mechanism 1 is rotated and misaligned. For example, the first slider 221 is provided with a first waist-shaped hole 2211, the second slider 222 is provided with a second waist-shaped hole 2221, the first connecting member 121 is inserted into the first waist-shaped hole 2211, the second connecting member 122 and the third The connecting members 123 are inserted into the second waist-shaped hole 2221. It should be understood that the number of waist-shaped holes and the number of connecting members should not be limited, as long as it is ensured that after all the connecting members are inserted into the waist-shaped holes, the screen fixing mechanism does not rotate and displace.

More preferably, in order to better fix the first sliding block 221 and the second sliding block 222, and to better install and fix the connecting member 12 to the sliding block 22. The outer surface of at least one end of the fastening stud 223 is provided with an external thread (not shown).

The first sliding block 221 is further provided with a first through hole 2212 penetrating therethrough along the second direction X, and the inner wall of the first through hole 2212 is provided with an internal thread (not shown) matched with an external thread.

The second sliding block 222 is further provided with a second through hole 2222 penetrating therethrough along the second direction X, and the second through hole 2222 is arranged directly opposite to the first through hole 2212.

The fastening stud 223 is inserted into the second through hole 2222 and its other end is clamped outside the second through hole 2222. The fastening stud 223 passes through the second through hole 2222 and then is inserted into the first through hole 2212 and engages with the first through hole 2212 through external threads. The internal thread is fixed to the first sliding block 221, and the fastening stud 223 is rotated forward and backward to adjust the length of its insertion into the first through hole 2212 so that the connecting member 12 is fixed to the sliding block 22.

In this embodiment, the fastening stud 223 includes two, the first through hole 2212 includes two, and the two first through holes 2212 are respectively provided at both ends of the first sliding block 221 along the third direction Y, and the second through hole 2212 The hole 2222 includes two holes 2222. The two second through holes 2222 are respectively disposed at two ends of the second sliding block 222 along the third direction Y, and each second through hole 2222 is arranged directly opposite to a corresponding first through hole 2212. This symmetrical structure is beneficial to the fastening stud 223 to better fix the first sliding block 221 and the second sliding block 222.

Compared with the prior art, the projection screen device of the present invention is installed and fixed on the target object surface by a connection adjustment mechanism, the projection screen is fixed by the screen fixing mechanism, and the projection screen is tightened in the second direction and the third direction respectively. Stretch flat as a plane. The structure realizes that the projection screen is installed as a plane suitable for viewing, the structure is simple and easy to install, and the projection screen can be rolled and packaged, so that the projection screen device is light in weight and easy to transport. More preferably, the connecting piece of the screen fixing mechanism is installed and fixed to the first waist-shaped hole of the connecting adjustment mechanism, so that the screen fixing mechanism and the connection adjustment mechanism form a sliding connection for adjusting the projection screen along the first direction and the third direction. Displacement. The structure realizes the three-dimensional freedom adjustment and the adjustment of the overall screen flatness through the connecting piece and the first waist-shaped hole.

The above are only the embodiments of the present utility model. It should be pointed out here 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 all belong to The scope of protection of the utility model.

Claims

A projection screen device, characterized in that it includes a projection screen and a screen fixing and adjusting device; the screen fixing and adjusting device includes a screen fixing mechanism fixed to the projection screen and connected to the screen fixing mechanism for installation and fixing The connection adjustment mechanism of the target object surface;

The connection adjustment mechanism is used to adjust the displacement of the screen fixing mechanism in the second direction to adjust the displacement of the projection screen in the second direction, and the connection adjustment mechanism is provided with an extension in the third direction The first waist-shaped hole with a long strip shape;

The screen fixing mechanism includes an angle clamp that abuts on the projection screen and a connecting piece extending from the angle clamp to the direction of the connection adjustment mechanism, and the connecting piece is inserted into the first waist-shaped hole to form a sliding connection Used to adjust the displacement of the projection screen in a first direction and a third direction; wherein the first direction is perpendicular to the projection screen, and the first direction, the second direction, and the third direction are two The two are perpendicular to each other.
The projection screen device according to claim 1, wherein the screen fixing mechanism further comprises a fastener, and the fastener abuts against the projection screen after passing through the corner clamp and causes the projection The screen is fixed to the corner clip.
The projection screen device according to claim 2, wherein the angle clip comprises a first angle clip extending along the second direction and a second angle clip extending along the third direction, the first angle clip One end of the angle clamp is vertically connected to one end of the second angle clamp, and the first angle clamp and the second angle clamp respectively fix two adjacent sides of a corner of the projection screen;

The connection adjustment mechanism includes a fixing block with a card slot installed to be fixed on the target object surface and a sliding block installed in the card slot to form a sliding connection, and the card slot extends along the second direction Provided, the first waist-shaped hole is provided on the slider;

The sliding block is slid and fixed in the second direction in the card slot to adjust the displacement of the screen fixing mechanism in the second direction.
The projection screen device according to claim 3, wherein the screen fixing mechanism further comprises a reinforcing plate connected to the first angle clamp and the second angle clamp respectively, and the connecting member is disposed on the reinforcing plate. The reinforcing plate is arranged on the same side of the first angle clamp and the second angle clamp along the first direction, and the projection screen is installed on a side of the reinforcing plate away from the connecting member.
The projection screen device according to claim 3, wherein the fastener includes a first fastener and a second fastener;

The first angle clamp includes a first receiving groove extending along the second direction and a first fixing hole passing through the first fixing hole, the first fixing hole communicates with the first receiving groove, and the first fastening A piece is inserted into the first fixing hole to form a fixing structure;

The second angle clamp includes a second receiving groove extending along the third direction and communicating with the first receiving groove and a second fixing hole penetrating therethrough. The second fixing hole is connected to the second receiving groove. The grooves are connected, and the second fastener is inserted into the second fixing hole to form a fixing structure;

One corner of the projection screen is inserted into the first accommodating groove and the second accommodating groove, and the first fastener extends into the first accommodating groove and fixes the projection screen to the In the first receiving slot, the second fastener extends into the second receiving slot and fixes the projection screen in the second receiving slot.
The projection screen device according to claim 5, wherein the first fastener includes a plurality of fasteners, and the second fastener includes a plurality of fasteners.
7. The projection screen device according to claim 6, wherein the first corner clip further comprises a first extrusion bar, defining an end of the first accommodating groove away from the second accommodating groove as a first open end , The first extrusion bar is inserted into the first receiving slot from the first open end and abuts against the projection screen, and the first fastener abuts against the first extrusion bar So that the first extrusion bar fixes the projection screen;

The second angle clip further includes a third extruding strip, defining the end of the second receiving groove away from the first receiving groove as a second open end, and the third extruding strip is formed by the second open end. Inserted into the second receiving groove and abutted against the projection screen, and the second fastener abutted against the third extruding bar so that the third extruding bar fixes the projection screen .
7. The projection screen device according to claim 7, wherein the first fixing hole includes two, the first fastener includes two, and each of the first fasteners is inserted into a corresponding one of the In the first fixing hole, the first angle clamp further includes a second extrusion strip, and the first extrusion strip and the second extrusion strip are respectively inserted into the first housing from the first opening end. The projection screen is sandwiched in the groove, and the two first fasteners abut against the first extrusion bar and the second extrusion bar respectively so that the first extrusion bar and the The second extrusion bar generates friction to fix the projection screen;

The second fixing hole includes two, the second fastener includes two, each of the second fasteners is inserted into a corresponding one of the second fixing holes, and the second angle clamp also includes a first Four extrusion bars, the third extrusion bar and the fourth extrusion bar are respectively inserted into the second receiving groove from the second open end and sandwich the projection screen, two The second fasteners respectively abut against the third extrusion bar and the fourth extrusion bar to cause the third extrusion bar and the fourth extrusion bar to generate friction to fix the projection screen .
The projection screen device according to claim 3, wherein the connection adjustment mechanism further comprises a limiting member fixed to the fixing block and extending into the slot along the second direction, the limiting member The positioning member abuts and is fixed on a side of the sliding block close to the center of the projection screen to adjust the displacement of the screen fixing mechanism in the second direction.
9. The projection screen device according to claim 9, wherein the connecting member comprises a first connecting member and a second connecting member spaced apart from each other;

The sliding block includes a first sliding block, a second sliding block arranged on a side of the first sliding block away from the center of the projection screen, and connected to the first sliding block and the second sliding block respectively. Fasten the studs,

The first waist-shaped hole penetrates through the first sliding block, the second sliding block is provided with a second waist-shaped hole penetrated therethrough, and the second waist-shaped hole extends along the third direction and In a long strip shape, the first connecting member is inserted into the first waist-shaped hole, and the second connecting member is inserted into the second waist-shaped hole;

The first sliding block and the second sliding block are fixed by the fastening studs, and the fastening studs adjust the distance between the first waist-shaped hole and the second waist-shaped hole and make the The distance is smaller than the distance between the first connecting piece and the second connecting piece so that the connecting piece is fixed to the slider;

The depth of the first connecting member inserted into the first waist-shaped hole in the first direction and the depth of the second connecting member inserted into the second waist-shaped hole in the first direction are used to adjust the The displacement of the projection screen along the first direction;

The position where the first connecting member is inserted into the first waist-shaped hole in the third direction and the position where the second connecting member is inserted into the second waist-shaped hole in the third direction are used to adjust the The displacement of the projection screen along the third direction.
The projection screen device according to claim 10, wherein the outer surface of at least one end of the fastening stud is provided with an external thread;

The first sliding block is further provided with a first through hole penetrating therethrough along the second direction, and the inner wall of the first through hole is provided with an internal thread that cooperates with the external thread;

The second sliding block is further provided with a second through hole penetrating therethrough along the second direction, and the second through hole is arranged directly opposite to the first through hole;

The fastening stud is inserted into the second through hole and the other end of the fastening stud is clamped outside the second through hole, and the fastening stud is inserted into the first through hole after passing through the second through hole The external thread is engaged with the internal thread to be fixed to the first sliding block, and the fastening stud is rotated forward and backward to adjust the length of its insertion into the first through hole to make the connection The piece is fixed to the slider.
The projection screen device according to claim 10, wherein the connecting member further comprises a third connecting member spaced apart from the first connecting member and the second connecting member; the second sliding block further Is provided with a third waist-shaped hole penetrating therethrough, the third waist-shaped hole extends along the third direction and is elongated, and the third waist-shaped hole is spaced apart from the second waist-shaped hole; The third connecting member is inserted into the third waist-shaped hole.