Rapidly assembled and disassembled projection curtain, projection system and vehicle

Abstract

The utility model relates to the technical field of projection equipment, in particular to a projection curtain capable of being quickly assembled and disassembled, a projection system and a vehicle. The supporting assembly comprises a cross rod and supporting rods connected to the two ends of the cross rod, the supporting rods and the cross rod are each of a hollow rod-shaped structure formed by detachably connecting a plurality of hollow rod bodies, and the curtain is installed on the cross rod through a fixing part; the traction assembly comprises a rope-shaped object and a limiting part, the rope-shaped object is arranged in the supporting rod and the transverse rod in a penetrating mode, the limiting part is matched with the transverse rod and / or the supporting rod, and the limiting part is used for fixing the end of the rope-shaped object; through the above arrangement, rapid assembly and disassembly of the projection curtain are realized, the installation difficulty is effectively reduced, the installation stability is improved, after disassembly, the occupied space is small, and carrying and storage in a small space can be realized.

Description

Technical Field

[0001] The utility model relates to a quickly disassembled and assembled projection screen, a projection system and a vehicle, belonging to the technical field of projection equipment. Background Art

[0002] With the improvement of the quality of life and the development of the projection industry, people's demand for outdoor camping, traveling and outdoor movie watching has increased sharply, and more and more outdoor camping screens have emerged. However, most outdoor projection screens have various problems. For example, they are relatively large in size and inconvenient to carry, take up a large amount of space when stored, and are not convenient to disassemble and assemble. Also, during outdoor use, they need to withstand other stress effects, such as wind force, which has a great impact on the installation stability of the projection screen, and problems such as falling off or falling apart often occur. Moreover, during the outdoor installation and disassembly process, problems such as incomplete storage and sorting and missing parts often occur, resulting in the projection screen being unable to be used normally next time. Therefore, it is of great practical significance to study a new type of projection screen. Summary of the Utility Model

[0003] The utility model aims at the deficiencies of the prior art and provides a quickly disassembled and assembled projection screen, a projection system and a vehicle.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A quickly disassembled and assembled projection screen includes: a screen, with a fixing part provided at one end of the screen; a support assembly, the support assembly includes a cross bar and support rods connected to both ends of the cross bar, both the support rods and the cross bar are hollow rod-shaped structures formed by detachably connecting a plurality of hollow rod bodies, and the screen is installed on the cross bar through the fixing part; a traction assembly, the traction assembly includes a rope-like object passing through the inside of the support rods and the cross bar and a limiting part adapted to the cross bar and / or the support rods, and the limiting part is used to fix the ends of the rope-like object.

[0006] Further, one end of the hollow rod body is a plug-in end, and the other end is a socket end. The outer diameter of the plug-in end is smaller than the inner diameter of the socket end, and the plug-in end and the socket end are inserted and matched with each other.

[0007] Further, two support rods are respectively installed at both ends of the cross bar to form a first support part and a second support part. Both the first support part and the second support part are formed by the two support rods being arranged alternately, and one end of the support rod passes through a through hole opened on the cross bar to be connected to the cross bar.

[0008] Further, the limiting part is a tubular end cover with a notch opened on the side wall. Both ends of the rope-like object are knotted or provided with fixing structures and then respectively placed inside the end cover, and the end cover is covered on the end of the support rod and / or the cross bar.

[0009] Further, the limiting part is a V-shaped elastic sheet arranged inside the support rod and / or the cross bar. One end of the rope-like object is connected to the V-shaped elastic sheet, and the opening direction of the V-shaped elastic sheet is consistent with the extending direction of the rope-like object.

[0010] Further, the fixing part adopts any one of a hook part, a snap-fastening part, a zipper part, and a magnetic attracting part.

[0011] Further, the support assembly further includes a reinforcing rod. The two ends of the reinforcing rod are respectively detachably connected to the two support rods of the first support part and / or the second support part to form an A-shaped structure. Lower hooks connected to the reinforcing rod are arranged on both sides of the bottom end of the curtain.

[0012] Further, the reinforcing rod is a hollow rod-shaped structure, and no rope-like object is threaded inside it.

[0013] Further, the reinforcing rod is a hollow rod-shaped structure, and a rope-like object fixed by the limiting part is threaded inside it.

[0014] Further, the reinforcing rod is a hollow rod-shaped structure, and the rope-like objects threaded in the two support rods of the first support part and / or the second support part are all connected in series inside the reinforcing rod through the limiting part.

[0015] Further, the reinforcing rod is a hollow rod-shaped structure, and the rope-like object threaded in any one of the support rods of the first support part and / or the second support part is connected in series inside the reinforcing rod through the limiting part.

[0016] Further, a ground nail is arranged at one end of the support rod close to the ground.

[0017] Further, the rope-like object is an elastic cord with a certain tensile strength.

[0018] The present utility model also provides a projection system, including the above projection curtain and a projector for projecting an image onto the projection curtain.

[0019] The present utility model also provides a vehicle, including the above projection system; and a vehicle body for installing the projection system.

[0020] The beneficial effects of the present utility model are:

[0021] (1) Through the above settings, the rapid assembly and disassembly of the projection curtain are realized, the installation difficulty is effectively reduced, the installation efficiency is improved, and after disassembly, the occupied space is small, and it can be carried and stored in a small space.

[0022] (2) By setting up the traction component, it has multiple functions. It can enable the support component to bear the traction force from the traction component after installation, ensuring firm installation, reducing the probability of falling off or falling apart, and improving the installation stability. It can also achieve the positioning of the installation position of the hollow rod body by connecting the support components in series, so that each time of assembly, the hollow rod bodies that cooperate with each other during the previous assembly are inserted and matched, avoiding the problem of poor fit between different hollow rod bodies, which in turn affects the installation stability. It can also play a shock-absorbing role, helping to further improve the installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic three-dimensional structure diagram of the projection screen provided by the present utility model;

[0024] Figure 2 Schematic three-dimensional structure diagram of the hollow rod body provided by the present utility model;

[0025] Figure 3 Schematic installation diagram of the limiting part and the support component provided in Embodiment 1 of the present utility model;

[0026] Figure 4 Schematic installation diagram of the limiting part and the support component provided in Embodiment 2 of the present utility model;

[0027] Figure 5 Schematic structure diagram of the limiting part provided in Embodiment 1 of the present utility model;

[0028] Figure 6 Schematic connection diagram of the reinforcing rod and the rope-like object provided by the present utility model;

[0029] Figure 7 Schematic connection diagram of the reinforcing rod and the two support rods through the rope-like object provided by the present utility model;

[0030] Figure 8 Schematic connection diagram of the reinforcing rod and any one of the support rods through the rope-like object provided by the present utility model.

[0031] Reference numerals:

[0032] 1, curtain; 11, fixing part; 2, cross bar; 3, first support part; 31, support rod; 4, second support part; 5, hollow rod body; 51, insertion end; 52, socket end; 6, rope-like object; 7, end cap; 8, V-shaped elastic piece; 9, reinforcing rod; 10, lower hook; 12, ground nail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following is a detailed description of the specific embodiments of the present utility model. The present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used are only for describing the specific embodiments and not for limiting the present utility model.

[0035] As Figure 1 —4 shows, the present utility model provides a quick-disassembly and quick-assembly projection screen, including: a screen 1, one end of the screen 1 is provided with a fixing part 11, and the screen 1 is used for displaying a projected image; a support assembly, the support assembly includes a cross bar 2 and support rods 31 connected to both ends of the cross bar 2. The support rods 31 and the cross bar 2 are both hollow rod-shaped structures formed by detachably connecting a plurality of hollow rod bodies 5 to each other. The screen 1 is installed on the cross bar 2 through the fixing part 11. It should be noted that the cross bar 2 is horizontally arranged relative to the ground, and the support rods 31 and the cross bar 2 can be connected by any one of plugging, clamping, screwing, etc. It can be understood that the function of the support rods 31 is to provide a supporting force for the cross bar 2 to keep the cross bar 2 away from the ground. Therefore, the number of the support rods 31 can be set to be not less than one, as long as the support rods 31 can support the cross bar 2; the cross section of the hollow rod body 5 can be a circular, triangular or rectangular polygon structure, and the hollow rod bodies 5 can be connected by any one of plugging, clamping, screwing, etc. Clamping requires additional setting of clamping fixtures, and screwing requires adding process steps during manufacturing. Therefore, in the embodiments of the present utility model, it is preferably that the hollow rod bodies 5 are connected by plugging, which not only simplifies the manufacturing process but also reduces the production and manufacturing cost; a traction assembly, the traction assembly includes a rope-like object 6 passing through the inside of the support rods 31 and the cross bar 2 and a limiting part adapted to the cross bar 2 and / or the support rods 31, and the limiting part is used for fixing the end of the rope-like object 6. It should be noted that the rope-like object 6 may or may not have elasticity, and its length is not less than the lengths of the cross bar 2 and the support rods 31, and it can realize the connection of both ends of the cross bar 2 and both ends of the support rods. The rope-like object 6 is preferably an elastic rope with a certain tensile strength; the limiting part is adapted to the cross bar 2 and / or the support rods 31, which means that the limiting part can be installed and fixed at a predetermined position of the cross bar 2 and / or the support rods 31 to ensure that the end of the rope-like object 6 is fixed at the corresponding position.

[0036] Through the above settings, first of all, the rapid assembly and disassembly of the projection screen are realized, effectively reducing the installation difficulty and improving the installation efficiency. After disassembly, it occupies a small space and can be carried and stored in a small space. Secondly, by setting the traction component, it has multiple functions. It can not only make the support component bear the traction force from the traction component after installation to ensure firm installation, reduce the probability of falling off or falling apart, and improve the installation stability; but also realize the positioning of the installation position of the hollow rod body 5 through the series connection of the support components, so that each time of assembly, the hollow rod body 5 that cooperated with each other during the previous assembly is inserted and matched, avoiding the problem of poor cooperation between different hollow rod bodies 5 and thus affecting the installation stability; it can also play a shock-absorbing role, which helps to further improve the installation stability.

[0037] As Figure 2 shown, one end of the hollow rod body 5 is a plug-in end 51, and the other end is a socket end 52. The outer diameter of the plug-in end 51 is smaller than the inner diameter of the socket end 52. Preferably, to ensure the flatness of the outer surface after assembly, the outer diameter of the socket end 52 is the same as the outer diameter of the rod body of the hollow rod body 5. The plug-in end 51 is a reduced-diameter end. The plug-in end 51 is made by a tube shrinking process or by riveting a small-diameter tube. The plug-in end 51 and the socket end 52 are inserted and matched with each other.

[0038] Specifically, as Figure 1 shown, two support rods 31 are respectively installed at both ends of the cross bar 2 to form a first support portion 3 and a second support portion 4. Both the first support portion 3 and the second support portion 4 are formed by the two support rods 31 being staggered. The two support rods 31 are staggered to form a triangular shape. One end of the support rod 31 passes through a through hole opened on the cross bar 2 to be connected to the cross bar 2. It should be noted that the diameter of the through hole is larger than the outer diameter of the plug-in end 51 and smaller than the inner diameter of the socket end 52. The two support rods 31 of the first support portion 3 and the second support portion 4 are not connected to each other. Each support rod 31 is connected to the cross bar 2 by passing through a through hole opened on the cross bar 2. Through the above settings, on the premise of ensuring the installation stability, there is no connection relationship between the two support rods 31 of the first support portion 3 and the second support portion 4. When the support rod 31 is damaged, it is convenient for maintenance and replacement.

[0039] Specifically, as Figure 3 and Figure 5As shown, the limiting part is a tubular end cap 7 with a notch on its side wall. The lower part of the end cap 7 is set as an inward-conical shape for easy installation and positioning. And the inner diameter of the lower part of the end cap 7 is smaller than that of the upper part of the end cap 7. The opening size of the side wall of the lower part of the end cap 7 is smaller than that of the upper part of the side wall. Both ends of the cord-like object 6 are knotted or fixed structures are arranged at both ends, and then they are respectively placed in the opening of the end cap 7. The end cap 7 is covered on the support rod 31 and / or the end of the cross bar 2. It should be noted that the fixed structure can be structures such as a clamping block or a clip, as long as it can fix the end of the cord-like object 6. Through the above settings, it is ensured that the ends of the cord-like object 6 are fixed at the corresponding positions, preventing the cord-like object 6 from moving, and further improving the installation stability.

[0040] Specifically, the fixing part 11 adopts any one of a hook member, a snap-fastening member, a zipper member, and a magnetic attracting member. It can be understood that the function of the fixing part 11 is to detachably install the curtain 1 on the cross bar 2. It should be noted that the fixing part 11 is fixed at a predetermined position on the curtain 1 by means of glue or sewing. If the fixing part 11 is a hook member, the fixing part 11 is arranged at a certain distance from the edge of the curtain 1. When installing the curtain 1, a small part of the curtain 1 is folded around the cross bar 2 to the back of the curtain 1, and then the curtain 1 is connected and fixed to the cross bar 2 through the hook member. If the fixing part 11 is a snap-fastening member, a zipper member or a magnetic attracting member, the fixing part 11 is arranged at the edge of the curtain 1. When installing the curtain 1, one end of the curtain 1 provided with the fixing part 11 is folded around the cross bar 2 to the back of the curtain 1, and then it is connected and fixed to the curtain 1 with the cooperating member arranged on the back of the curtain 1. Through the above settings, the detachable installation of the curtain 1 can be realized, and it can also be ensured that the surface of the curtain 1 is flat and without wrinkles after installation, improving the projection display effect.

[0041] As Figure 1 As shown, the support assembly further includes a reinforcing rod 9. Both ends of the reinforcing rod 9 are respectively connected to the two support rods 31 of the first support part 3 and / or the second support part 4 to form an A-shaped structure. Lower hooks 10 connected to the reinforcing rod 9 are arranged on both sides of the bottom end of the curtain 1. It should be noted that holes for inserting both ends of the reinforcing rod 9 are arranged at the lower part of the support rod 31, and the "lower part" is the side close to the ground. Through the above settings, both the structural strength is enhanced and it is further ensured that the curtain 1 is flat and without wrinkles.

[0042] Specifically, the reinforcing rod 9 is composed of a plurality of hollow rod bodies 5 detachably connected to each other to form a plurality of hollow rod-like structures, and no cord-like object 6 is passed through its interior.

[0043] Specifically, as Figure 6As shown, the reinforcing rod 9 is a hollow rod-shaped structure, and a cord-like object 6 fixed by the limiting part is threaded through it. The first support part 3 and the second support part 4 are independent of the reinforcing rod 9. According to the assembly requirements, components of different lengths or shapes can be flexibly replaced, and the replacement process is convenient and fast, further improving the installation efficiency.

[0044] Specifically, as Figure 7 shown, the reinforcing rod 9 is a hollow rod-shaped structure, and the cord-like objects 6 threaded through the two support rods 31 of the first support part 3 and / or the second support part 4 are all connected in series inside the reinforcing rod 9 through the limiting part. The first support part 3 and / or the second support part 4 and the reinforcing rod 9 are connected in series by the cord-like object 6, which can not only further ensure the installation stability but also solve the problem of losing parts during daily storage and handling.

[0045] Specifically, as Figure 8 shown, the reinforcing rod 9 is a hollow rod-shaped structure, and the cord-like object 6 threaded through any one of the support rods 31 of the first support part 3 and / or the second support part 4 is connected in series inside the reinforcing rod 9 through the limiting part.

[0046] Specifically, to further improve the installation stability, a ground nail 12 is provided at one end of the support rod 31 close to the ground, and the ground nail 12 can firmly fix the support rod 31 on the ground.

[0047] Embodiment 2

[0048] As Figure 4 shown, different from Embodiment 1, the limiting part is a V-shaped elastic piece 8 arranged inside the support rod 31 and / or the cross bar 2. One end of the cord-like object 6 is connected to the V-shaped elastic piece 8, and the opening direction of the V-shaped elastic piece 8 is consistent with the extending direction of the cord-like object 6. It should be noted that one end of the cord-like object 6 is fixed at the connection of the two outer supporting pieces of the V-shaped elastic piece 8 by means of knotting, gluing, or setting a fixing structure, etc. When the V-shaped elastic piece 8 is in an unloaded state, its two outer supporting pieces are in contact with the inner wall of the support rod 31 or the cross bar 2. When the cord-like object 6 is stretched and stressed, it will drive the two outer supporting pieces of the V-shaped elastic piece 8 to deform outward, so that the V-shaped elastic piece 8 firmly supports on the inner wall of the support rod 31 or the cross bar 2, ensuring that the end of the cord-like object 6 is fixed at the corresponding position and preventing the cord-like object 6 from moving. Further improving the installation stability; preferably, when the V-shaped elastic piece 8 is in an unloaded state, the included angle between the two outer supporting pieces is greater than 45° and less than 60°. Similarly, the cord-like object 6 in the reinforcing rod 9 can also be fixed by the V-shaped elastic piece 8.

[0049] Other structures are the same as those in Embodiment 1.

[0050] Embodiment 3

[0051] The present utility model provides a projection system, which includes the projection screen in Embodiment 1 or Embodiment 2, and further includes a projector for projecting an image onto the projection screen.

[0052] Embodiment 4

[0053] The present utility model further provides a vehicle, which includes a vehicle body and the projection system in Embodiment 3. The projection system is installed on the vehicle body, and users can also enjoy the smooth experience of watching movies on a large screen in the vehicle.

[0054] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0055] For those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can be made, and these all belong to the protection scope of the present utility model. The protection scope of the present utility model is subject to the appended claims.

Claims

1. A quick disassembly and assembly projection screen, characterized in that: include: A curtain, wherein a fixing portion is provided at one end of the curtain; A support assembly, the support assembly comprising a crossbar and support rods connected to both ends of the crossbar, the support rod and the crossbar are both hollow rod-shaped structures formed by a plurality of hollow rod bodies detachably connected to each other, and the curtain is mounted on the crossbar through a fixing portion; A traction assembly, the traction assembly includes a rope-like object passing through the support rod and the cross rod and a limiting portion adapted to the cross rod and / or the support rod, the limiting portion being used to fix the end of the rope-like object.

2. The quick-disassembly projection screen according to claim 1, characterized in that: One end of the hollow rod body is a plug-in end, and the other end is a sleeve end. The outer diameter of the plug-in end is smaller than the inner diameter of the sleeve end, and the plug-in end and the sleeve end are plugged and matched with each other.

3. The quick disassembly and assembly projection screen according to claim 1, characterized in that: Two support rods are installed at each end of the crossbar to form a first support portion and a second support portion. The first support portion and the second support portion are both formed by two support rods arranged alternately. One end of the support rod passes through a through hole provided on the crossbar and is connected to the crossbar.

4. The quick-disassembly projection screen according to claim 1, characterized in that: The limiting part is a tubular end cover with a notch in the side wall. The two ends of the rope are tied or fixed with structures at both ends and placed in the end covers respectively. The end covers cover the ends of the support rod and / or the cross rod.

5. The quick-disassembly projection screen according to claim 1, characterized in that: The limiting portion is a V-shaped spring piece arranged inside the support rod and / or the cross rod, one end of the rope-like object is connected to the V-shaped spring piece, and the opening direction of the V-shaped spring piece is consistent with the extending direction of the rope-like object.

6. The quick-disassembly projection screen according to claim 1, characterized in that: The fixing part is any one of a hook part, a snap part, a zipper part, and a magnetic part.

7. The quick-disassembly projection screen according to claim 3, characterized in that: The support assembly also includes a reinforcement rod, the two ends of which are detachably connected to the two support rods of the first support part and / or the second support part to form an A-shaped structure, and lower hooks connected to the reinforcement rod are arranged on both sides of the bottom end of the curtain.

8. The quick-disassembly projection screen according to claim 7, characterized in that: The reinforcement rod is a hollow rod-shaped structure, and no rope-shaped object is passed through the interior of the reinforcement rod.

9. The quick-disassembly projection screen according to claim 7, characterized in that: The reinforcing rod is a hollow rod-shaped structure, and a rope-shaped object fixed by the limiting part is passed through the interior of the reinforcing rod.

10. The quick-disassembly projection screen according to claim 7, characterized in that: The reinforcement rod is a hollow rod-shaped structure, and the rope-shaped objects passing through the two support rods of the first support part and / or the second support part are all connected in series inside the reinforcement rod through the limiting part.

11. The quick-disassembly projection screen according to claim 7, characterized in that: The reinforcement rod is a hollow rod-shaped structure, and the rope-shaped object passing through any one of the support rods of the first support part and / or the second support part is connected in series inside the reinforcement rod through a limiting part.

12. The quick-disassembly projection screen according to claim 1, characterized in that: A ground nail is arranged at one end of the support rod close to the ground.

13. A quick-disassembly projection screen according to any one of claims 1 to 12, characterized in that: The rope-shaped object is an elastic rope with a certain tensile strength.

14. A projection system, characterized in that: It comprises a projection screen as described in any one of claims 1 to 13; and a projector for projecting an image onto the projection screen.

15. A vehicle, characterized in that: The method comprises the projection system as claimed in claim 14; and a vehicle body for mounting the projection system.

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