A projection screen that is easy to dismount and mount

Abstract

This utility model discloses a projection screen that is easy to disassemble and install, including two vertical rod assemblies, a screen, two horizontal rod assemblies, and two legs. Each vertical rod assembly has a through groove, and both ends of the screen are connected to the two through grooves respectively. Each end of the horizontal rod assembly is connected to a limiting block, and the two limiting blocks on the horizontal rod assembly are detachably connected by engaging with the two through grooves. The two horizontal rod assemblies are located on both sides of the screen. Each vertical rod assembly has a mounting groove, and the legs are slidably connected to the mounting groove. Limiting components are installed in the through grooves, and the limiting components stop the legs. This utility model provides a projection screen that is easy to disassemble and install, using a snap-fit ​​and roll-up method to disassemble and install the projection screen, making it convenient for users to assemble and disassemble the device.

Description

Technical Field

[0001] This utility model relates to the field of projection equipment, and in particular to a projection screen that is easy to disassemble and install. Background Technology

[0002] In existing outdoor film and television screening and commercial display applications, portable outdoor projection screens are common devices designed to meet the needs of users to carry them to outdoor venues such as campsites and parks for temporary deployment. They are usually composed of a flexible screen body, a support frame and multiple bolts. During installation, the support frame is fixed and unfolded by bolts, and the screen body is fastened to the support frame one by one by multiple hanging rings, so that the screen body is fully unfolded. During actual installation, the process involves tightening multiple bolts and attaching the hanging rings one by one, which is not only cumbersome and time-consuming, but also requires reversing all the steps during disassembly. First, the hanging rings are disconnected one by one, then the bolts are loosened and the bracket is disassembled, which is equally inefficient. This inconvenience in installation and disassembly caused by the structural design that relies on bolt fixing and manual attachment seriously affects the user's outdoor experience and fails to meet the core needs of outdoor scenarios for rapid deployment and storage. Utility Model Content

[0003] The purpose of this utility model is to provide a projection screen that is easy to disassemble and install. The projection screen is disassembled and installed by means of snap-fit ​​and roll-up, which makes it convenient for users to disassemble and install this device.

[0004] The technical solution adopted by the projection screen disclosed in this utility model, which is easy to disassemble and install, is as follows: The device includes two vertical rod assemblies, a screen, two horizontal rod assemblies, and two support legs. Each vertical rod assembly has a through groove, and both ends of the screen are connected to the two through grooves respectively. Both ends of each horizontal rod assembly are connected to a limit block, and the two limit blocks on the horizontal rod assembly are detachably connected and inserted into the two through grooves respectively. The two horizontal rod assemblies are located on both sides of the screen. Each vertical rod assembly has a mounting groove, and the support legs are slidably connected to the mounting grooves. Limiting components are installed in the through grooves, and the limiting components stop the support legs.

[0005] As a preferred embodiment, the vertical rod assembly includes a first rod body, and the through groove is located on the outside of the first rod body and is parallel to the first rod body.

[0006] As a preferred embodiment, the mounting groove penetrates the first rod body, and four sliding grooves are provided on the groove wall of the mounting groove. The cross-section of the support leg is I-shaped, and the four flanges of the support leg are respectively inserted into the four sliding grooves.

[0007] As a preferred embodiment, one end of the limiting member is slidably inserted into the through groove and touches the adjacent limiting block. A first fixing member and a second fixing member pass through the limiting member. The first fixing member stops the bottom of the through groove, and the second fixing member stops the support leg.

[0008] As a preferred embodiment, the limiting member has a hole, and a friction member is installed in the hole. The second fixing member pushes the friction member to stop the support leg.

[0009] As a preferred embodiment, the crossbar assembly includes two second rods, which are inserted end to end, and the two limiting blocks are located at the ends of the two second rods respectively.

[0010] As a preferred embodiment, a screw is fixedly connected to the limiting block, and a nut is fixedly connected to the end of the second rod. The screw and the nut are connected in a mating manner, and the two screws on the crossbar assembly are left-hand thread and right-hand thread, respectively.

[0011] As a preferred embodiment, both ends of the curtain are fixedly connected to connecting rods, the connecting rods are slidably inserted into the through groove, and two limiting members in the through groove respectively contact the two ends of the connecting rods, and the curtain passes through the through groove.

[0012] As a preferred embodiment, both sides of the support leg are rotatably connected to support rods, which are located away from the first rod body.

[0013] As a preferred embodiment, both sides of the support leg are fixedly connected to connectors, the support rod is rotatably connected to the connectors, the support rod is provided with an elastic plate, and both ends of the elastic plate extend with protrusions, the protrusions passing through the support rod and the connectors in sequence.

[0014] The advantages of the projection screen disclosed in this utility model, which is easy to disassemble and install, are: When installing this projection screen, push the two vertical rod assemblies that retract the screen to unfold to both sides, allowing the screen to spread out. Insert the limiting blocks at both ends of the horizontal rod assembly into the corresponding slots of the two vertical rod assemblies, so that the two vertical rod assemblies and the two horizontal rod assemblies together form a rectangular frame to support the screen, eliminating the need for hooks to attach the hanging rings to hooks, as is required with traditional projection screens. Slide the legs into the mounting slots and insert the limiting pieces into the slots, using the limiting pieces to stop the legs and fix their positions. The vertical rod assemblies, horizontal rod assemblies, and legs are mainly connected by snap-fit ​​and plug-in methods, making installation convenient for users. When storing this projection screen, first remove the limiting piece from the through slot to release the constraint on the legs, then pull the legs out of the mounting slot to separate them from the vertical rod assembly; next, remove the four limiting blocks from the two through slots to separate the horizontal rod assembly from the vertical rod assembly; then rotate the two vertical rod assemblies to roll the screen from both ends toward the center to reduce its size; by simplifying the disassembly and assembly steps of each component and optimizing the screen installation method, users can more easily disassemble and assemble this projection screen. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a projection screen that is easy to disassemble and install according to this utility model.

[0016] Figure 2 This is an installation diagram of the vertical and horizontal rod assemblies of a projection screen that is easy to disassemble and install according to this utility model.

[0017] Figure 3 This is a schematic diagram of the installation of a limiting block for a projection screen that is easy to disassemble and install according to this utility model.

[0018] Figure 4 This is a cross-sectional view of the vertical and horizontal rod assemblies of a projection screen that is easy to disassemble and install according to this utility model.

[0019] Figure 5 This is a cross-sectional view of the vertical rod assembly and legs of a projection screen that is easy to disassemble and install according to this utility model.

[0020] Figure 6 This is a schematic diagram of the installation of a vertical rod assembly and support legs for a projection screen that is easy to disassemble and install according to this utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the legs and support rods of a projection screen that are easy to disassemble and install according to this utility model. Detailed Implementation

[0022] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Please refer to Figures 1-3 .

[0023] The present invention discloses a projection screen that is easy to disassemble and install, comprising two vertical rod assemblies 1, a screen 2, two horizontal rod assemblies 3, and two support legs 4; The vertical rod assembly 1 includes a first rod body 11, and a through groove 111 is provided on the vertical rod assembly 1. The through groove 111 is located outside the first rod body 11, and the through groove 111 is parallel to the first rod body 11. The two ends of the through groove 111 extend out from the two ends of the first rod body 11 respectively. Furthermore, in this embodiment, the cross-section of the through groove 111 is preferably circular with a tapered top. This tapered structure is formed by flanges extending inward from both sides of the top of the groove, making the width of the groove opening smaller than the diameter of the main body of the groove, thereby forming a contour similar to an "inverted teardrop". This allows the limiting block 32 to be inserted into the through groove 111 from one end of the through groove 111, and the screw 321 on the limiting block 32 can pass through the groove opening on the through groove 111 and exit the through groove 111.

[0024] The vertical rod assembly 1 has an installation groove 112, which is located on the first rod body 11 and passes through the first rod body 11. The installation groove 112 is parallel to the through groove 111, so that the two openings of the installation groove 112 are located at the two ends of the first rod body 11 respectively. Furthermore, four sliding grooves are provided on the wall of the mounting groove 112, and the sliding grooves are parallel to the mounting groove 112; a dust cover 12 is provided on one end of the mounting groove 112; when the first rod 11 is placed vertically, the dust cover 12 is located on the top of the first rod 11; a notch is provided on the dust cover 12, and the notch is close to the through groove 111.

[0025] The curtain 2 is placed between the two first rods 11, and the two ends of the curtain 2 are respectively connected to the two through slots 111; Furthermore, both ends of the curtain 2 are fixedly connected with connecting rods 21, which slide into the through groove 111, and the curtain 2 passes through the opening of the through groove 111. The design of the curtain 2 being pre-installed in the through groove 111 via the connecting rod 21 is to facilitate installation during production; while when storing, it is not necessary to remove the connecting rod 21 of the curtain 2 from the through groove 111, but only to rotate the two first rods 11 to roll the curtain 2 from both ends toward the center.

[0026] The crossbar assembly 3 includes two second rods 31; the two second rods 31 are inserted end to end, and when the two second rods 31 are inserted, the length of the crossbar assembly 3 can be increased to match the width of the curtain 2. The two second rods 31 can be disassembled and separated to reduce the storage volume of the crossbar assembly 3. Furthermore, both ends of the crossbar assembly 3 are connected to limit blocks 32, and the two limit blocks 32 are respectively located at the ends of the two second rods 31; a screw 321 is fixedly connected to the limit block 32, and a nut 311 is fixedly connected to the end of the second rod 31, and the screw 321 and the nut 311 are connected in a mating manner; in this embodiment, the two screws 321 on the crossbar assembly 3 are preferably left-hand thread screw 321 and right-hand thread screw 321, respectively; Two limiting blocks 32 on the horizontal bar assembly 3 are detachably connected and inserted into two through slots 111. The two limiting pieces 5 in the through slots 111 respectively abut against the two ends of the connecting rod 21. The two horizontal bar assemblies 3 are located on both sides of the curtain 2. By rotating the second rod 31 and using the limiting block 32 to lock the screw 321 so that it cannot rotate, the nut 311 pushes the limiting block 32 along the screw 321 away from the second rod 31, thereby adjusting the distance between the two first rods 11 and adjusting the tension of the curtain 2.

[0027] Please refer to Figure 1 and Figures 5-7 .

[0028] In this embodiment, the cross-section of the support leg 4 is preferably I-shaped. One end of the support leg 4 is inserted into the mounting groove 112 and slidably connected to the mounting groove 112. The four flanges of the support leg 4 are respectively inserted into four sliding grooves and slidably connected to the sliding grooves. When the first rod 11 is placed vertically, the support leg 4 is located at the bottom of the first rod 11. Furthermore, a limiting component 5 is installed inside the through groove 111, and a limiting hole is opened at the bottom of the through groove 111; Furthermore, one end of the limiting member 5 is slidably inserted into the through groove 111. Since the first rod 11 is placed vertically, the two limiting blocks 32 and the connecting rod 21 in the through groove 111 will slide downward due to gravity. By the limiting member 5 contacting the adjacent limiting block 32, the two limiting blocks 32 and the connecting rod 21 are constrained in the through groove 111. The limiting member 5 has a first fixing member 51 and a second fixing member 52 passing through it. In this embodiment, it is preferred that the first fixing member 51 and the second fixing member 52 are both knobs with screws. The first fixing member 51 and the second fixing member 52 are both connected to the limiting member 5 and pass through the limiting member 5. Furthermore, the first fixing member 51 passes through the slot of the through groove 111, making it convenient for the user to rotate and adjust. The first fixing member 51 is inserted into the limiting hole, thereby constraining the limiting member 5 within the through groove 111. Furthermore, the limiting member 5 has a hole, and a friction member 521 is installed in the hole; the second fixing member 52 passes through the hole and contacts the friction member 521. The height of the curtain 2 can be adjusted by pulling the support leg 4 to extend the length of the mounting groove 112; by rotating the second fixing member 52, the friction member 521 is pushed to stop the support leg 4, thus constraining the support leg 4 to its current position and limiting its extension length into the mounting groove 112, and also limiting its retraction into the mounting groove 112. Support rods 42 are rotatably connected to both sides of the support leg 4, and the support rods 42 are away from the first rod body 11.

[0029] Both sides of the support leg 4 are fixedly connected to the connector 41, which is close to the other end of the support leg 4; both sides of the support leg 4 are rotatably connected to the support rod 42, which is away from the first rod body 11. The support rod 42 is rotatably connected to the connector 41, and the support rod 42 is rotatably connected to the support leg 4 through the connector 41. Furthermore, in this embodiment, the support rod 42 is preferably a hollow tube, and an elastic sheet 421 is provided inside the support rod 42. Two protrusions 422 extend from both ends of the elastic sheet 421. The two protrusions 422 located at the same end have a height difference, and the lower protrusion 422 is closer to the end of the elastic sheet 421. The protrusion 422 penetrates the support rod 42. Two pairs of grooves are provided on the connector 41. The two pairs of grooves are arranged at right angles with the connection between the support rod 42 and the connector 41 as the center. The two lower protrusions 422 are respectively inserted into one pair of grooves, thereby penetrating the connector 41 and constraining the rotation angle of the support rod 42 on the connector 41. By pressing the higher protrusions 422 at both ends of the elastic sheet 421 to compress the elastic sheet 421, the lower protrusions 422 are retracted into the support rod 42. By rotating the support rod 42 on the connector 41, the elastic sheet 421 is released after the support rod 42 is unfolded, and the elastic sheet 421 is released, allowing it to spring back and let the two lower protrusions 422 snap into another pair of grooves, so that the support rod 42 is constrained at the current angle. When the first rod 11 is placed vertically, the support rod 42 improves the stability of the support leg 4 on the ground; the way the support rod 42 is rotatably connected to the connector 41 can reduce the footprint of the support rod 42 when the support leg 4 is stored.

[0030] Please refer to Figures 1-7 .

[0031] During installation: By pushing the two first rods 11 to rotate away from each other, the curtain 2 unfolds to both sides, allowing the curtain 2 to spread out; the limiting blocks 32 at both ends of the horizontal rod assembly 3 are inserted into the through slots 111 of the two vertical rod assemblies 1, so that the two vertical rod assemblies 1 and the two horizontal rod assemblies 3 together form a rectangular frame, and the curtain 2 is located within the rectangular frame; then by rotating the second rod 31, the width between the two first rods 11 is adjusted, thereby adjusting the tension of the curtain 2; Insert the limiting member 5 into the through groove 111, rotate the first fixing member 51 to engage the limiting hole, thereby constraining the limiting member 5 within the through groove 111; slide the support leg 4 into the mounting groove 112, adjust the length of the support leg 4 extending out of the mounting groove 112, rotate the second fixing member 52 to push the friction member 521 to stop the support leg 4, constraining the support leg 4 in the current position; press the elastic sheet 421 to release the constraint on the support rod 42, unfold the support rod 42, release the elastic sheet 421 to constrain the support rod 42 at the current angle; place the first rod body 11 upright, place the support leg 4 on the ground, and complete the installation and setup of this projection screen.

[0032] When storing: Rotate the first fixing member 51 to disengage from the limiting hole, releasing the constraint of the limiting member 5 inserted into the through groove 111; rotate the second fixing member 52 to loosen the top contact friction member 521, releasing the constraint on the support leg 4; first remove the limiting member 5 from the through groove 111, then pull the support leg 4 out of the mounting groove 112, and at the same time merge the two support rods 42 on the support leg 4. Remove the four limiting blocks 32 from the two through slots 111 respectively to separate the horizontal bar assembly 3 from the vertical bar assembly 1. Disassemble and separate the two second rods 31 in the horizontal bar assembly 3 to shorten the size of the horizontal bar assembly 3. Then rotate the two first rods 11 to roll the screen 2 from both ends toward the center to reduce the volume, thus completing the disassembly and storage of the projection screen.

[0033] This invention provides a projection screen that is easy to disassemble and install. When installing the projection screen, push the two vertical rod assemblies that retract the screen to unfold to both sides, allowing the screen to spread out. Insert the limiting blocks at both ends of the horizontal rod assembly into the corresponding slots of the two vertical rod assemblies, so that the two vertical rod assemblies and the two horizontal rod assemblies together form a rectangular frame to support the screen, eliminating the need for hooks to attach the hanging rings to hooks in traditional projection screens. Slide the legs into the mounting slots, and slide the limiting pieces into the slots, using the limiting pieces to stop the legs and fix their positions. The vertical rod assemblies, horizontal rod assemblies, and legs are mainly connected by snap-fit ​​and plug-in methods, making installation convenient for users. When storing this projection screen, first remove the limiting piece from the through slot to release the constraint on the legs, then pull the legs out of the mounting slot to separate them from the vertical rod assembly; next, remove the four limiting blocks from the two through slots to separate the horizontal rod assembly from the vertical rod assembly; then rotate the two vertical rod assemblies to roll the screen from both ends toward the center to reduce its size; by simplifying the disassembly and assembly steps of each component and optimizing the screen installation method, users can more easily disassemble and assemble this projection screen.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A projection screen that is easy to disassemble and install, characterized in that, It includes two vertical pole assemblies, a curtain, two horizontal pole assemblies, and two legs; The vertical rod assembly has through slots, and the two ends of the curtain are respectively connected to the two through slots; Both ends of the crossbar assembly are connected to limit blocks. The two limit blocks on the crossbar assembly are respectively inserted into two through slots and can be detachably connected. The two crossbar assemblies are located on both sides of the curtain. The vertical rod assembly has an installation groove, the support leg is slidably connected to the installation groove, and a limiting member is installed in the through groove to stop the support leg.

2. The projection screen as described in claim 1, characterized in that, The vertical rod assembly includes a first rod body, and the through groove is located on the outside of the first rod body and is parallel to the first rod body.

3. A projection screen that is easy to disassemble and install as described in claim 2, characterized in that, The mounting groove penetrates the first rod body, and four sliding grooves are provided on the groove wall of the mounting groove. The cross-section of the support leg is I-shaped, and the four flanges of the support leg are respectively inserted into the four sliding grooves.

4. The projection screen as described in claim 3, characterized in that, One end of the limiting member slides into the through groove and touches the adjacent limiting block. A first fixing member and a second fixing member pass through the limiting member. The first fixing member stops the bottom of the through groove, and the second fixing member stops the support leg.

5. A projection screen that is easy to disassemble and install as described in claim 4, characterized in that, The limiting member has a hole, and a friction member is installed in the hole. The second fixing member pushes the friction member to stop the support leg.

6. A projection screen that is easy to disassemble and install as described in claim 1, characterized in that, The crossbar assembly includes two second rods, which are inserted end to end, and the two limiting blocks are located at the ends of the two second rods respectively.

7. A projection screen that is easy to disassemble and install as described in claim 6, characterized in that, A screw is fixedly connected to the limiting block, and a nut is fixedly connected to the end of the second rod. The screw and the nut are connected in a mating manner. The two screws on the crossbar assembly are left-hand thread and right-hand thread, respectively.

8. A projection screen that is easy to disassemble and install as described in any one of claims 5 or 7, characterized in that, Both ends of the curtain are fixedly connected to connecting rods. The connecting rods are slidably inserted into the through grooves. Two limiting members in the through grooves respectively contact the two ends of the connecting rods, and the curtains pass through the through grooves.

9. A projection screen that is easy to disassemble and install as described in claim 8, characterized in that, Both sides of the outrigger are rotatably connected to support rods, which are located away from the first rod.

10. A projection screen that is easy to disassemble and install as described in claim 9, characterized in that, Both sides of the support leg are fixedly connected to connectors. The support rod is rotatably connected to the connectors. The support rod is provided with an elastic plate. Both ends of the elastic plate have protrusions that pass through the support rod and the connectors in sequence.

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