Screen frame and projection screen
By using strip-shaped metal profiles to form the screen frame, the problem of high cost of aluminum alloy projection screen frames was solved, achieving cost reduction and strength improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-24
AI Technical Summary
The existing projection screen frame is made of aluminum alloy, which results in high material costs and processing costs.
Multiple strip-shaped metal profiles are fixedly connected by connectors to form a frame, which simplifies the frame cross-section and uses steel and other materials instead of aluminum.
This reduced material and processing costs while increasing the strength of the screen frame and reducing its thickness.
Smart Images
Figure CN224035752U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of projection technology, in particular to a screen frame and a projection screen. BACKGROUND
[0002] At present, the frame type laser projection screen mainly consists of an inner frame, a flexible curtain and an outer frame. The inner frame as the skeleton of the entire projection screen plays a crucial role in the stability of the entire projection screen in transportation, environmental temperature change and home use.
[0003] The existing inner frame (screen frame) generally adopts aluminum alloy material, and generally adopts extrusion process to form a strip-shaped aluminum material with a complex section to make multiple frames, and then the multiple frames are spliced to form a screen frame. However, in order to meet the strength requirement of the inner frame made of aluminum alloy material, more material is needed, and the material cost and processing cost are high. CONTENT OF THE UTILITY MODEL
[0004] The embodiment of the present application provides a screen frame and a projection screen. The problem of high cost of the screen frame in the prior art can be solved, and the technical scheme is as follows:
[0005] In one aspect, a screen frame is provided, comprising: two first frames arranged opposite along a first direction, and two second frames arranged opposite along a second direction, the first direction intersecting the second direction;
[0006] Two ends of the first frame are connected with two second frames respectively, and two ends of the second frame are connected with two first frames respectively.
[0007] For any one of the first frame and the second frame, the frame comprises: a plurality of metal profiles in strip shape.
[0008] Among the same frame, the plurality of metal profiles are arranged in sequence in the width direction of the frame, and two metal profiles adjacent in the plurality of metal profiles are fixedly connected through a connecting piece.
[0009] Optionally, among the same frame, the plurality of metal profiles comprise: a first profile, a second profile and a third profile arranged in sequence in the width direction of the frame.
[0010] The first profile is closer to the outer side of the screen frame than the third profile, the first profile has a first bearing surface, the second profile has a second bearing surface, and the third profile has a connecting part.
[0011] The first bearing surface and the second bearing surface are used for fitting the edge portion of the flexible curtain, and the connecting portion is used for tightening the tightening member connected at the edge position of the flexible curtain.
[0012] Optionally, the first profile includes a first sheet structure and a second sheet structure integrally formed;
[0013] One side of the first sheet structure is connected with the side of the second profile through the connecting member, and the first sheet structure has the first bearing surface;
[0014] The second sheet structure is connected with the first sheet structure away from the side of the second profile, and in the direction perpendicular to the first bearing surface, the second sheet structure is distributed on the side of the first sheet structure away from the first bearing surface.
[0015] Optionally, the connecting member between the first sheet structure and the second profile is a first solder, and in the width direction of the frame, the first solder is distributed between the first sheet structure and the second profile; and in the direction perpendicular to the first bearing surface, the first solder is distributed on the side of the first sheet structure away from the first bearing surface.
[0016] Optionally, the third profile includes a third sheet structure and a fourth sheet structure integrally formed;
[0017] One side of the third sheet structure is connected with the side of the second profile away from the second bearing surface through the connecting member, and in the width direction of the frame, the third sheet structure is distributed on the side of the second profile away from the first profile;
[0018] The fourth sheet structure is connected with the third sheet structure away from the side of the second profile, and in the width direction of the frame, the fourth sheet structure is distributed on the side of the third sheet structure away from the second profile;
[0019] The side of the fourth sheet structure away from the third sheet structure has the connecting portion.
[0020] Optionally, the connecting member between the third sheet structure and the second profile is a second solder, and in the direction perpendicular to the second bearing surface, the second solder is distributed between the third sheet structure and the second profile; and in the width direction of the frame, the second solder is distributed on the side of the third sheet structure toward the second profile.
[0021] Optionally, the second profile is a hollow tube body; the screen frame further comprises a plurality of corner connectors, one of the corner connectors is distributed between the end of the first frame and the end of the second frame.
[0022] Part of the corner connectors extends into the hollow tube body in the first frame and is connected with the first frame; another part of the corner connectors extends into the hollow tube body in the second frame and is connected with the second frame.
[0023] Optionally, in the extension direction of the frame, the length of the first profile is greater than the length of the second profile, and the length of the second profile is greater than the length of the third profile.
[0024] The corner connector comprises a corner block, and a first connecting strip and a second connecting strip connected with the corner block.
[0025] Part of the corner connectors extends into the hollow tube body in the first frame and is connected with the first frame; another part of the corner connectors extends into the hollow tube body in the second frame and is connected with the second frame.
[0026] Optionally, for the first frame, in the extension direction of the first frame, the length of the first profile is equal to the length of the second profile, and the length of the first profile is greater than the length of the third profile.
[0027] For the second frame, in the extension direction of the second frame, the length of the first profile is greater than the length of the second profile, and the length of the second profile is greater than or equal to the length of the third profile.
[0028] Part of the corner connectors extends into the hollow tube body in the first frame and is connected with the first frame; another part of the corner connectors extends into the hollow tube body in the second frame and is connected with the second frame.
[0029] In another aspect, a projection screen is provided, comprising a screen frame and a flexible curtain, the flexible curtain is attached to the bearing surface of the screen frame, and the screen frame is any of the above-mentioned screen frames.
[0030] The technical scheme provided by the embodiments of the present application has the following beneficial effects:
[0031] The screen frame is formed by connecting a plurality of metal profiles in the form of a strip through the connecting pieces to form the frame, so that the screen frame is formed by the plurality of frames, and thus the aluminum frame with a complex cross section is not required. Since the frame is formed by the plurality of metal profiles, the cross section of the single metal profile is simpler than that of the aluminum frame in the related art, and the cost of the metal profile manufactured by the extrusion process can be reduced. Meanwhile, the material selection of the metal profile with the simple cross section is more extensive, and materials such as steel can be used, so that the strength of the screen frame can be improved, the thickness can be reduced, and the material cost can be further reduced. BRIEF DESCRIPTION OF DRAWINGS
[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0033] Figure 1 FIG. 1 is a structural schematic diagram of a screen frame according to an embodiment of the present application;
[0034] Figure 2 FIG. 2 is a cross-sectional schematic diagram of the screen frame shown in FIG. 1 at A-A' or B-B'; Figure 1
[0035] Figure 3 FIG. 3 is a structural schematic diagram of a screen frame according to another embodiment of the present application;
[0036] Figure 4 FIG. 4 is an exploded schematic diagram of the screen frame shown in FIG. 3; Figure 3
[0037] Figure 5 FIG. 5 is a structural schematic diagram of a frame according to an embodiment of the present application;
[0038] Figure 6 FIG. 6 is another structural schematic diagram of the frame according to an embodiment of the present application;
[0039] Figure 7 FIG. 7 is a structural schematic diagram of a corner connecting piece according to an embodiment of the present application;
[0040] Figure 8 FIG. 8 is a structural schematic diagram of the corner connecting piece and the frame after connection according to an embodiment of the present application;
[0041] Figure 9 FIG. 9 is a structural schematic diagram of a screen frame according to another embodiment of the present application;
[0042] Figure 10 FIG. 10 is a structural schematic diagram of a first frame and a second frame before welding according to an embodiment of the present application;
[0043] Figure 11 A structure schematic diagram of the first frame and the second frame after welding is provided for the embodiment of the present application.
[0044] Figure 12 A structure schematic diagram of the projection screen is provided for the embodiment of the present application. DETAILED DESCRIPTION
[0045] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.
[0046] Please refer to Figure 1 and Figure 2 , Figure 1 A structure schematic diagram of a screen frame, Figure 2 A cross-sectional schematic diagram of the screen frame shown in Figure 1 , in the related art, the four frames of the screen frame 00 of the projection screen can include two first frames 01 arranged oppositely along a first direction X and two second frames 02 arranged oppositely along a second direction Y, the first frame 01 and the second frame 02 are connected by an angle connecting piece (not shown in the figure) and a bolt. The end of the first frame 01 and the second frame 02 is generally processed as a 45-degree bevel, and the first frame 01 and the second frame 02 are spliced to form a 90-degree screen frame.
[0047] In the related art, the frame is made of aluminum profile, and the complex cross-section of the frame as shown in Figure 2 can be obtained by using the extrusion performance and machining performance of aluminum material / aluminum alloy through extrusion process and machining treatment. The frame has a bearing surface 01a on one side in the thickness direction H, a connecting part 01b for connecting the tensioning piece on one side in the width direction W, and a cavity 01c matching the angle connecting piece in the middle. Since the extrusion performance and machining performance of ferrous alloy are not as good as those of aluminum alloy, the frame made of aluminum alloy is most commonly used.
[0048] However, as shown in Figure 1 and Figure 2 , on the one hand, the size of the frame in the width direction W and the thickness direction H is relatively large due to the relatively low strength of the aluminum alloy, and the material cost is high. On the other hand, the profile with a complex cross-section needs to be extruded, and the end of the frame also needs to be processed at 45 degrees, which has a high processing cost.
[0049] The present application provides a screen frame, please refer to Figures 3 to 5 , Figure 3 A structure schematic diagram of the screen frame is provided for the embodiment of the present application, Figure 4 A schematic diagram of the explosion of the screen frame is shown in Figure 3 .Figure 5 A structural schematic diagram of the bezel provided in the embodiments of the present application, the screen frame 000 can include two first bezels 100 arranged opposite along a first direction X, and two second bezels 200 arranged opposite along a second direction Y, the first direction X intersects the second direction Y. For example, the first direction X is perpendicular to the second direction Y.
[0050] The two ends of the first bezel 100 are respectively connected with the two second bezels 200; the two ends of the second bezel 200 are respectively connected with the two first bezels 100. For example, the first bezel 100 and the second bezel 200 can be connected through the corner connector 300 and the bolt.
[0051] For any one of the first bezel 100 and the second bezel 200, the bezel 000a can include a plurality of metal profiles 010a in a strip shape.
[0052] In the same bezel 000a, the plurality of metal profiles 010a are arranged in sequence in the width direction W of the bezel 000a, and two metal profiles 010a adjacent in the plurality of metal profiles 010a are fixedly connected through the connector 004.
[0053] For example, the screen frame 000 has a bearing surface 000b on one side in a third direction, the third direction intersects the first direction X and the second direction Y, for example, the third direction is perpendicular to the first direction X and the second direction Y. The width direction W of the bezel 000a is perpendicular to the extension direction L of the bezel 000a and parallel to the bearing surface 000b. For example, the width direction W of the first bezel 100 is parallel to the first direction X, the extension direction L is parallel to the second direction Y, and the thickness direction H is parallel to the third direction. The width direction W of the second bezel 200 is parallel to the second direction Y, the extension direction L is parallel to the first direction X, and the thickness direction H is parallel to the third direction.
[0054] For example, in the embodiments of the present application, the connector 004 connecting the two metal profiles 010a can be a solder / welding layer formed by connection, and can also be a rivet, a bolt, etc.
[0055] The screen frame provided in the embodiments of the present application is formed by a plurality of metal profiles in a strip shape fixedly connected through a connector to form a bezel, so as to form a screen frame by a plurality of bezels. In this way, an aluminum material bezel with a complex cross section does not need to be used. Since the bezel is composed of a plurality of metal profiles, the cross section of a single metal profile is simpler than the complex cross section of the aluminum material bezel in the related art, and the cost of the metal profile made by extrusion process can be reduced. At the same time, the material selection of the metal profile with a simple cross section is more extensive, and materials such as steel materials can be used, so that the strength of the screen frame can be improved, the thickness can be reduced, and the material cost can be further reduced.
[0056] For some possible implementation methods, please refer to Figure 5 Within the same frame 000a, multiple metal profiles 010a may include: a first profile 001, a second profile 002, and a third profile 003 arranged sequentially in the width direction W of the frame 000a.
[0057] The first profile 001 is closer to the outer side of the screen frame 000 than the third profile 003. The first profile 001 has a first bearing surface 001a, the second profile 002 has a second bearing surface 002a, and the third profile 003 has a connecting part 003a.
[0058] The first bearing surface 001a and the second bearing surface 002a are both used to fit the edge of the flexible screen, and the connecting part 003a is used to tighten the tensioning member connected at the edge of the flexible screen.
[0059] Please refer to Figure 2 and Figure 5 The cross-section of the border 000a provided in this application embodiment is, on the one hand, for Figure 2 The integrated frame 000a shown is modeled; on the other hand, while ensuring the presence of the connecting part 003a, the first bearing surface 001a, and the second bearing surface 002a, the cross-sectional complexity of the frame 000a is simplified. In this way, the cross-section of a single metal profile 010a is simpler, and the equipment cost, material cost, and processing cost of obtaining the metal profile 010a through extrusion or other methods can be further reduced.
[0060] For example, the support surface 000b of the screen frame 000 may include a first support surface 001a and a second support surface 002a, which can be flush to provide good support for the flexible screen 0001.
[0061] For example, the number of multiple metal profiles 010a is not limited. The three profiles 001, 002 and 003 mentioned above are the minimum number to achieve the frame function. More metal profiles can be added on this basis, for example, a profile can be added between the first profile 001 and the second profile 002, or between the second profile 002 and the third profile 003.
[0062] For some possible implementation methods, please refer to Figure 5 and Figure 6 , Figure 6 The first profile 001 may include an integrally formed first sheet structure 011 and a second sheet structure 012.
[0063] One side of the first sheet structure 011 is connected with the side of the second profile 002 through the connecting piece 004, and the first sheet structure 011 has a first bearing surface 001a.
[0064] The second sheet structure 012 is connected with the side of the first sheet structure 011 away from the second profile 002, and is distributed on the side of the first sheet structure 011 away from the first bearing surface 001a in the direction perpendicular to the first bearing surface 001a (corresponding to the thickness direction H of the first profile 001). Figure 6
[0065] As shown in Figure 6 , the cross section of the first profile 001 can be in the shape of “L”, and the outer side of the area where the first sheet structure 011 and the second sheet structure 012 are connected can also have an arc-shaped first transition surface 001b, and the side of the second sheet structure 012 away from the first sheet structure 011 has an arc-shaped second transition surface 001c. In this way, the place where the first profile 001 contacts the flexible curtain can be smooth, avoiding damaging the flexible curtain, and also facilitating the expansion and contraction movement of the flexible curtain due to thermal expansion and contraction. In addition to the extrusion process, the first profile 001 in the shape of “L” can also be made by stamping and the like, making the processing of the first profile 001 more flexible.
[0066] Some possible implementations are described below with reference to Figure 5 and Figure 6 , the connecting piece 004 between the first sheet structure 011 and the second profile 002 is a first solder 004a. In the width direction W of the frame 000a, the first solder 004a is distributed between the first sheet structure 011 and the second profile 002. And in the direction perpendicular to the first bearing surface 001a, the first solder 004a is distributed on the side of the first sheet structure 011 away from the first bearing surface 001a.
[0067] In the embodiments of the present application, the first profile 001 and the second profile 002 can be fixedly connected by welding, and the first solder 004a is located on the back of the first bearing surface 001a, so that the first solder 004a formed after welding does not affect the first bearing surface 001a or the second bearing surface 002a. Therefore, after the first profile 001 and the second profile 002 are welded, the first solder 004a can be polished, reducing the processing cost.
[0068] Some possible implementations are described below with reference to Figure 5 and Figure 6 , the third profile 003 can include an integrally formed third sheet structure 031 and a fourth sheet structure 032.
[0069] One side of the third sheet structure 031 is connected to the side of the second profile 002 away from the second bearing surface 002a through the connecting piece 004, and in the width direction W of the frame 000a, the third sheet structure 031 is distributed on the side of the second profile 002 away from the first profile 001.
[0070] The fourth sheet structure 032 is connected to the side of the third sheet structure 031 away from the second profile 002, and in the width direction W of the frame 000a, the fourth sheet structure 032 is distributed on the side of the third sheet structure 031 away from the second profile 002.
[0071] As shown in
[0072] As shown in Figure 6 , the cross section of the third profile 003 can be "L" type, and the overall cross section of the third profile 003 is simple, and the processing cost is low. In addition to the extrusion process, the third profile 003 with "L" type cross section can also be made by stamping and other methods, so that the processing of the third profile 003 is more flexible.
[0073] In some possible implementations, please refer to Figure 5 and Figure 6 , the connecting piece 004 between the third sheet structure 031 and the second profile 002 is the second solder 004b, which is distributed between the third sheet structure 031 and the second profile 002 in the direction perpendicular to the second bearing surface 002a; and in the width direction W of the frame 000a, the second solder 004b is distributed on the side of the third sheet structure 031 towards the second profile 002.
[0074] In the embodiments of the present application, the second profile 002 and the third profile 003 can be fixedly connected by welding, and the second solder 004b is located on the side of the third sheet structure 031 towards the second profile 002, so that the second solder 004b formed after welding does not need to be polished and processed, reducing the processing cost.
[0075] In some possible implementations, as shown in Figures 4 to 6 , the second profile 002 can be a hollow pipe body; the screen frame 000 can further include: a plurality of corner connecting pieces 300, and one corner connecting piece 300 is distributed between the end of the first frame 100 and the end of the second frame 200.
[0076] Among them, part of the corner connecting piece 300 extends into the hollow pipe body in the first frame 100 and is connected with the first frame 100; another part of the corner connecting piece 300 extends into the hollow pipe body in the second frame 200 and is connected with the second frame 200.
[0077] Exemplarily, the part of the corner connecting piece 004 extending into the hollow tube of the frame 000a can be provided with a connecting hole, and the first frame 100 and the second frame 200 can be correspondingly provided with connecting holes, and the first frame 100 and the second frame 200 are connected with the corner connecting piece 300 respectively through bolts.
[0078] In some possible implementation manners, refer to Figure 7 With Figure 8 , Figure 7 The structural schematic diagram of the corner connecting piece provided by the embodiment of the present application, Figure 8 The structural schematic diagram of the corner connecting piece provided by the embodiment of the present application, Figure 8 In the second direction Y in the first direction X, the length of the first profile 001 is greater than the length of the second profile 002, and the length of the second profile 002 is greater than the length of the third profile 003. Figure 8 The corner connecting piece 300 can include a corner block 301, and a first connecting strip 302 and a second connecting strip 303 connected with the corner block 301.
[0079] Among them, the first connecting strip 302 extends into the hollow tube (that is, the second profile 002) in the first frame 100 and is connected with the first frame 100. The second connecting strip 303 extends into the hollow tube (that is, the second profile 002) in the second frame 200 and is connected with the second frame 200. The corner block 301 is distributed in the area surrounded by the first profile 001 and the second profile 002 in the first frame 100 and the first profile 001 and the second profile 002 in the second frame 200.
[0080] For example, the extension direction of the first connecting strip 302 is parallel to the extension direction L of the first frame 100, and the outer shape of the first connecting strip 302 matches the outer shape of the hollow tube in the first frame 100. The extension direction of the second connecting strip 303 is parallel to the extension direction L of the second frame 200, and the outer shape of the second connecting strip 303 matches the outer shape of the hollow tube in the second frame 200.
[0081] In the related art, for example
[0082] Figure 1 As shown, the two ends of the frame need to be processed into 45 degrees, and there is a certain processing cost. In the embodiment of the present application, the lengths of the plurality of metal profiles 010a in the extension direction L are set to be different, so that the corner connecting piece 300 and the second profile 002 can be spliced, and after splicing, the corner connecting piece 300 and the second profile 002 can abut against each other, and the second profile 002 of the first frame 100 and the second profile 002 of the second frame 200 can also abut against each other. Therefore, the end of the frame 000a can not be processed at 45 degrees, reducing the processing cost of the frame 000a.
[0083] In some possible implementations, please refer to Figures 9 to 11 , Figure 9 the structural schematic diagram of the screen frame provided by another embodiment of the present application, Figure 10 the structural schematic diagram of the first frame and the second frame before welding provided by the embodiment of the present application, Figure 11 the structural schematic diagram of the first frame and the second frame after welding provided by the embodiment of the present application, for the first frame 100, in the extension direction L of the first frame 100 (corresponding to the second direction Y in Figure 10 , the length of the first profile 001 is equal to the length of the second profile 002, and the length of the first profile 001 is greater than the length of the third profile 003.
[0084] For the second frame 200, in the extension direction L of the second frame 200 (corresponding to the first direction X in Figure 10 , the length of the first profile 001 is greater than the length of the second profile 002, and the length of the second profile 002 is greater than or equal to the length of the third profile 003.
[0085] Among them, the end surface 100a of the first profile 001 and the end surface 100b of the second profile 002 in the first frame 100 are spliced and welded with the side surface 200a of the part of the first profile 001 protruding from the second profile 002 in the second frame 200. And / or, the end surface 200b of the second profile 002 in the second frame 200 is spliced and welded with the side surface 100c of the second profile 002 in the first frame 100.
[0086] In the embodiment of the present application, by setting the lengths of the plurality of metal profiles 010a of the frame 000a, the ends of the first frame 100 and the second frame 200 can be matched, and the ends of the first frame 100 and the second frame 200 can be spliced. In this way, the first frame 100 and the second frame 200 can be connected without the corner connecting piece 300, further solving the cost. And the plurality of metal profiles 010a of the frame 000a can also be connected by welding, and then the whole screen frame 000 can be processed by welding process, without the need for processing of the connecting hole, further reducing the processing cost.
[0087] Exemplarily, since the corner connector 300 is not required, the second profile 002 can not be a hollow tube body, can adopt an I-shaped profile, a U-shaped groove profile, or the like, that is, a profile that can provide the second bearing surface 002b, and the processing cost of these profiles is lower than that of the rectangular hollow tube body, and the cost of the frame 000a can be further reduced.
[0088] In some possible implementation manners, refer to Figure 3 , Figure 4 and Figure 9 , the screen frame 000 can further include a support beam 400, the support beam 400 extends along the first direction X, and two ends of the support beam 400 are fixedly connected with the two first frames 100 respectively.
[0089] Exemplarily, in the technical solutions shown in Figure 3 and Figure 4 , the two ends of the support beam 400 can be fixedly connected with the two first frames 100 through bolts respectively. In the technical solution shown in Figure 9 , the two ends of the support beam 400 can be fixedly connected with the two first frames 100 through welding respectively. The support beam 400 can enhance the strength of the screen frame 000.
[0090] In conclusion, the screen frame provided by the embodiments of the present application can include: two first frames arranged opposite along a first direction, and two second frames arranged opposite along a second direction, and the frame can include: a plurality of metal profiles in a strip shape. The frame is formed by connecting the plurality of metal profiles in a strip shape through connectors, so that the screen frame is composed of a plurality of frames, and thus the aluminum frame with a complex cross section does not need to be used. Since the frame is composed of a plurality of metal profiles, the cross section of a single metal profile is simpler than that of the aluminum frame in the related art, and the cost of the metal profile manufactured by the extrusion process can be reduced. Meanwhile, the material selection of the metal profile with a simple cross section is more extensive, and materials such as steel can be used, so that the strength of the screen frame can be improved, the thickness can be reduced, and the material cost can be further reduced.
[0091] The embodiments of the present application also provide a projection screen, refer to Figure 12 , Figure 12 for the structure schematic diagram of the projection screen provided by the embodiments of the present application, the projection screen 0000 can include: a screen frame and a flexible curtain 0001, the screen frame is the screen frame 000 described in any of the above embodiments, and the flexible curtain 0001 is attached to the bearing surface 000b of the screen frame 000. The projection screen 0000 can have the technical effects of the screen frame 000 described above, which are not described herein.
[0092] Exemplarily, the projection screen 0000 can further include a plurality of tensioning members 0002, one end of the plurality of tensioning members 0002 being connected with the edge of the flexible curtain 0001, and the other end being connected with the connecting portion 003a of the frame 000.
[0093] In the present application, the terms "first" and "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise explicitly limited.
[0094] The above only describes optional embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A screen frame, characterized in that, include: Two first borders are arranged opposite each other along a first direction, and two second borders are arranged opposite each other along a second direction, wherein the first direction and the second direction intersect. The two ends of the first border are respectively connected to the two second borders; the two ends of the second border are respectively connected to the two first borders. For either the first border or the second border, the border includes: a plurality of strip-shaped metal profiles; In the same frame, multiple metal profiles are arranged sequentially in the width direction of the frame, and two adjacent metal profiles are fixedly connected by a connector.
2. The screen frame according to claim 1, characterized in that, Within the same frame, the plurality of metal profiles include: a first profile, a second profile, and a third profile arranged sequentially in the width direction of the frame; The first profile is closer to the outer side of the screen frame than the third profile. The first profile has a first bearing surface, the second profile has a second bearing surface, and the third profile has a connecting portion. The first bearing surface and the second bearing surface are both used to fit the edge portion of the flexible curtain, and the connecting part is used to tighten the tensioning member connected at the edge position of the flexible curtain.
3. The screen frame according to claim 2, characterized in that, The first profile includes: an integrally formed first sheet structure and a second sheet structure; One side of the first sheet structure is connected to the side of the second profile via the connector, and the first sheet structure has the first bearing surface; The second sheet structure is connected to the side of the first sheet structure away from the second profile, and in a direction perpendicular to the first bearing surface, the second sheet structure is distributed on the side of the first sheet structure away from the first bearing surface.
4. The screen frame according to claim 3, characterized in that, The connector between the first sheet structure and the second profile is a first solder. In the width direction of the frame, the first solder is distributed between the first sheet structure and the second profile; and in the direction perpendicular to the first bearing surface, the first solder is distributed on the side of the first sheet structure away from the first bearing surface.
5. The screen frame according to any one of claims 2-4, characterized in that, The third profile includes: an integrally formed third sheet structure and a fourth sheet structure; One side of the third sheet structure is connected to the side of the second profile away from the second bearing surface via the connector, and the third sheet structure is distributed on the side of the second profile away from the first profile in the width direction of the frame; The fourth sheet structure is connected to the third sheet structure on the side away from the second profile, and the fourth sheet structure is distributed on the side of the third sheet structure away from the second profile in the width direction of the frame. The fourth sheet structure has the connecting portion on the side opposite to the third sheet structure.
6. The screen frame according to claim 5, characterized in that, The connector between the third sheet structure and the second profile is a second solder. In a direction perpendicular to the second bearing surface, the second solder is distributed between the third sheet structure and the second profile; and in the width direction of the frame, the second solder is distributed on the side of the third sheet structure facing the second profile.
7. The screen frame according to any one of claims 2-4 and 6, characterized in that, The second profile is a hollow tube; the screen frame further includes: multiple corner connectors, with one corner connector distributed between the end of the first frame and the end of the second frame; One portion of the corner connector extends into the hollow tube body in the first frame and is connected to the first frame; the other portion of the corner connector extends into the hollow tube body in the second frame and is connected to the second frame.
8. The screen frame according to claim 7, characterized in that, In the extending direction of the frame, the length of the first profile is greater than the length of the second profile, and the length of the second profile is greater than the length of the third profile; The corner connector includes: a corner block, and a first connecting strip and a second connecting strip connected to the corner block; The first connecting strip extends into the hollow tube body in the first frame and is connected to the first frame; the second connecting strip extends into the hollow tube body in the second frame and is connected to the second frame; the corner blocks are distributed in the area enclosed by the first profile and the second profile in the first frame, and the first profile and the second profile in the second frame.
9. The screen frame according to any one of claims 2-4 and 6, characterized in that, For the first frame, in the extending direction of the first frame, the length of the first profile is equal to the length of the second profile, and the length of the first profile is greater than the length of the third profile; For the second frame, in the extending direction of the second frame, the length of the first profile is greater than the length of the second profile, and the length of the second profile is greater than or equal to the length of the third profile; Wherein, the end face of the first profile and the end face of the second profile in the first frame are both spliced and welded to the side of the portion of the first profile in the second frame that protrudes from the second profile; and / or, the end face of the second profile in the second frame is spliced and welded to the side of the second profile in the first frame.
10. A projection screen, characterized in that, include: A screen frame and a flexible screen, wherein the flexible screen is attached to the support surface of the screen frame, and the screen frame is the screen frame described in any one of claims 1 to 9.