Projection screen support with small storage volume

Abstract

The utility model discloses a projection screen support with small storage volume, which comprises a connecting disc, a plurality of first supporting rods and two supporting legs, the first supporting rods are rotatably connected with the connecting disc, the plurality of first supporting rods are arranged around the outer side of the connecting disc, first elastic hanging pieces are arranged on the first supporting rods, and the two supporting legs are arranged on the first supporting rods. First clamping grooves are formed in the connecting disc, first elastic hanging pieces are arranged in the first clamping grooves, first buckles extend on the first elastic hanging pieces, the first buckles are clamped into the first clamping grooves, the supporting legs are rotationally connected with the connecting disc, the two supporting legs are arranged around the outer side of the connecting disc, second elastic hanging pieces are arranged in the middles of the supporting legs, second buckles extend on the second elastic hanging pieces, and the second buckles are clamped into the second clamping grooves. And the second buckle is clamped into the second clamping groove. The projection screen support provided by the utility model is small in storage volume, can be folded to reduce the volume, and is convenient for a user to store and carry.

Description

Technical Field

[0001] The utility model relates to the field of screen brackets, in particular to a projection screen bracket with a small storage volume. Background Art

[0002] A projector is a device that can project images, videos, or text onto a wall or screen. The projector projects the image in a magnified form onto the screen. The surface of the existing screen is white to better display the projected image. In order to make the surface of the screen flatter and improve the image display effect, a bracket is usually used to support the screen, which then unfolds the screen.

[0003] Existing projection screens are mostly used in indoor environments. These products are designed for indoor environments and do not consider the convenience of use in outdoor scenes. As people's demand for outdoor activities increases, the demand for outdoor projection is also increasing; however, the existing screens and brackets on the market are not easy for users to carry, disassemble or install, and the user experience is poor. Utility Model Content

[0004] The utility model aims to provide a projection screen bracket with a small storage volume, which can be folded to reduce the volume and is convenient for users to store and carry.

[0005] The technical solution adopted by the projection screen bracket with a small storage volume disclosed in the utility model is:

[0006] It includes a connecting disk, multiple first support rods and two legs, the first support rod is rotatably connected to the connecting disk, and the multiple first support rods are arranged around the outer side of the connecting disk. The first support rod is provided with a first elastic hanger, and a first buckle extends from the first elastic hanger, and the first buckle is snapped into the first slot. The legs are rotatably connected to the connecting disk, and the two legs are arranged around the outer side of the connecting disk. A second elastic hanger is provided in the middle of the legs, and a second buckle extends from the second elastic hanger, and the second buckle is snapped into the second slot.

[0007] As a preferred solution, multiple first support rods are respectively close to both sides of the connecting disk, and also include two second support rods, the second support rods are rotatably connected to the connecting disk, the two second support rods are arranged around the outside of the connecting disk, the second support rods are close to the central axis of the connecting disk, and the second support rods are also provided with a first elastic hanger.

[0008] As a preferred solution, the first support rod consists of a first upper rod body and a first lower rod body, the first upper rod body is fixedly connected to a first connecting member, the first lower rod body is fixedly connected to a second connecting member, the first connecting member is rotatably connected to the second connecting member, the first elastic hanger is connected to the first upper rod body, and the first lower rod body is rotatably connected to the connecting disk.

[0009] As a preferred solution, the support leg consists of a second upper rod body and a second lower rod body, the second upper rod body is also fixedly connected to the first connecting piece, the second lower rod body is also fixedly connected to the second connecting piece, the second elastic hanger is connected to the second upper rod body, and the second lower rod body is rotatably connected to the connecting disk.

[0010] As a preferred solution, a connecting column is passed through the first connecting member, a limiting column extends from the first connecting member, a mounting groove is provided on the second connecting member, sliding grooves are passed through both sides of the inner wall of the mounting groove, a limiting hole is provided on the second connecting member, the first connecting member is placed in the mounting groove, the two ends of the connecting column are respectively placed in the two sliding grooves for sliding contact, and the limiting column is snapped into the limiting hole for detachable connection.

[0011] As a preferred solution, the first elastic hanger includes a tube and a slide rod, a spring is sleeved on the outer side of the slide rod, the slide rod passes through the tube, the two ends of the spring respectively touch the inner wall of the tube and the slide rod, and a first limiter is fixedly connected to the slide rod, the first limiter is located on the outer side of the tube, and the first buckle is located on the slide rod.

[0012] As a preferred solution, the second elastic hanger includes a first sleeve, a second sleeve and a tension spring. The first sleeve and the second sleeve are both sleeved on the outside of the second upper rod body. A second limit member is provided on the outside of the first sleeve. The second limit member passes through the first sleeve and is fixedly connected to the second upper rod body. The tension spring is located between the first sleeve and the second sleeve. The two ends of the tension spring are respectively fixedly connected to the first sleeve and the second sleeve. The second buckle is located on the second sleeve.

[0013] As a preferred solution, the connecting disk is composed of a first disk body and a second disk body, the first disk body is provided with a plurality of first slots, and the plurality of the first slots are close to the edge of the first disk body, the second disk body is provided with a plurality of second slots, and the plurality of the second slots are close to the edge of the second disk body, the outer side of the second disk body is provided with a plurality of through slots, and the through slots are connected to the second slots, the first lower rod body is passed through by a first rotating column, the second lower rod body is passed through by a second rotating column, and the second support rod is passed through by a third rotating column, and the first rotating column, the second rotating column and the third rotating column are respectively placed between adjacent first slots and second slots.

[0014] As a preferred solution, a clamping claw is rotatably connected to the second upper rod body, and a locking piece is rotatably connected to the outer side of the clamping claw. The locking piece is detachably connected to the second upper rod body, and the clamping claw clamps a cross bar. The contact point of the clamping claw clamping the cross bar is located in the middle of the cross bar.

[0015] The beneficial effects of the projection screen bracket with a small storage volume disclosed in the utility model are:

[0016] When the user needs to retract the screen, the first buckle and the second buckle are first peeled off from the first card slot and the second card slot respectively, thereby removing the screen and rolling up the screen into a cylindrical shape to reduce the volume of the screen; since the first buckle and the second buckle lose the limit of the screen, the user can move the first support rod and the support leg to rotate in the same direction on the connecting disk, so that the first support rod and the support leg are parallel to each other, forming a cylindrical shape, thereby reducing the overall volume of the bracket; since the first support rod and the support leg are surrounded by the connecting disk, when the first support rod and the support leg are retracted, a circular space will be formed between the first support rod and the support leg, and the user can place the rolled-up screen in the space, which makes it easy to store the screen while protecting the screen from being worn during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a projection screen bracket with a small storage volume.

[0018] Figure 2 This is a schematic diagram of the back structure of a projection screen bracket with a small storage volume according to the present invention.

[0019] Figure 3 The utility model is a schematic structural diagram of a projection screen bracket with a small storage volume after folding and storage.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a connecting plate of a projection screen bracket with a small storage volume.

[0021] Figure 5 The utility model is a schematic diagram of the installation of a connecting plate of a projection screen bracket with a small storage volume.

[0022] Figure 6 The utility model is a schematic diagram of the installation of a first upper rod body, a first lower rod body, a first connecting piece and a second connecting piece of a projection screen bracket with a small storage volume.

[0023] Figure 7 This is a schematic diagram of the installation of a first elastic hanging piece of a projection screen bracket with a small storage volume in the utility model.

[0024] Figure 8 This is a cross-sectional view of a first elastic hanging piece of a projection screen bracket with a small storage volume according to the utility model.

[0025] Figure 9 The utility model is a schematic diagram of the installation of a second upper rod body, a second lower rod body, a first connecting member and a second connecting member of a projection screen bracket with a small storage volume.

[0026] Figure 10 This is a cross-sectional view of a second elastic hanging piece of a projection screen bracket with a small storage volume according to the utility model.

[0027] Figure 11 The utility model is a schematic diagram of a clamping structure of a projection screen bracket with a small storage volume.

[0028] Figure 12 This is a cross-sectional view of a first connecting member and a second connecting member of a projection screen bracket with a small storage volume according to the present invention (the arrow indicates the moving path of the first connecting member).

[0029] Figure 13 This is a cross-sectional view of a first connecting member and a second connecting member of a projection screen bracket with a small storage volume according to the present invention (the arrow indicates the rotation path of the first connecting member). DETAILED DESCRIPTION

[0030] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings:

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 10 .

[0032] The utility model discloses a projection screen bracket with a small storage volume, which is used to support a screen 1 and comprises a connecting plate 2, a plurality of first support rods 3, two second support rods 4 and two supporting legs.

[0033] The screen 1 is provided with a plurality of first card slots 111 and two second card slots 112. In this embodiment, preferably, there are eight first card slots 111. Both the first card slots 111 and the second card slots 112 are close to the edge of the screen 1, the second card slot 112 is close to one of the sides at the bottom of the screen 1, and the eight first card slots 111 are located on the other three sides of the screen 1.

[0034] Please refer to Figure 2 、 Figure 4 and Figure 5 .

[0035] In this embodiment, the connecting disk 2 is preferably composed of a first disk body 21 and a second disk body 22; a plurality of first slots 211 are provided on the first disk body 21, and the plurality of first slots 211 are close to the edge of the first disk body 21. In this embodiment, the first slots 211 are preferably T-shaped; a plurality of second slots are provided on the second disk body 22, and the plurality of second slots are close to the edge of the second disk body 22. In this embodiment, the second slots are preferably T-shaped, and a plurality of through slots 221 are provided on the outer side of the second disk body 22, and the through slots 221 are connected to the second slots.

[0036] Please refer to Figure 3-Figure 11 .

[0037] In this embodiment, six first support rods 3 are preferably provided. The first support rods 3 are rotatably connected to the connecting disk 2. The six first support rods 3 are arranged around the outer side of the connecting disk 2, and the six first support rods 3 are respectively close to both sides of the connecting disk 2. A first elastic hanger 8 is provided on the first support rod 3.

[0038] Furthermore, the first support rod 3 is composed of a first upper rod body 31 and a first lower rod body 32; one end of the first upper rod body 31 is fixedly connected to the first connecting member 6, and the first elastic hanger 8 is connected to the other end of the first upper rod body 31; one end of the first lower rod body 32 is fixedly connected to the second connecting member 7, and the first connecting member 6 is rotatably connected to the second connecting member 7; the other end of the first lower rod body 32 is horizontally penetrated by a first rotating column 321, and the first rotating column 321 is placed between the adjacent first slot 211 and the second slot 112, and the first rotating column 321 is in rotational contact with the first slot 211 and the second slot 112, and the first lower rod body 32 is rotatably connected to the connecting disk 2 through the first rotating column 321.

[0039] One end of the second support rod 4 is also horizontally penetrated by a second rotating column 411, and the second rotating column 411 is placed between the adjacent first slot 211 and the second card slot 112, and the second rotating column 411 is in rotational contact with the first slot 211 and the second card slot 112, and the second support rod 4 is rotationally connected to the connecting disk 2 through the second rotating column 411; the two second support rods 4 are arranged around the outside of the connecting disk 2, and the two second support rods 4 are respectively close to the two sides of the central axis of the connecting disk 2, and the other end of the second support rod 4 is also provided with a first elastic hanger 8.

[0040] The leg 5 is composed of a second upper rod 51 and a second lower rod 52; one end of the second upper rod 51 is also fixedly connected to the first connecting member 6, and one end of the second lower rod 52 is also fixedly connected to the second connecting member 7, and the first connecting member 6 is rotatably connected to the second connecting member 7; a second elastic hanger 9 is provided in the middle of the leg 5, and the second elastic hanger 9 is connected to the second upper rod 51; the other end of the second lower rod 52 is also horizontally penetrated by a third rotating column 521, and the third rotating column 521 is placed adjacent to the first slot 211 and the second slot 112, the third rotating post 521 is in rotational contact with the first slot 211 and the second slot 112, and the second lower rod 52 is rotationally connected to the connecting disk 2 through the third rotating post 521; after the first rotating post 321, the second rotating post 411 and the third rotating post 521 are placed in the corresponding first slot 211, the second disk body 22 is fixed on the first disk body 21, and the first rotating post 321, the second rotating post 411 and the third rotating post 521 are limited between the first slot 211 and the second slot where they are rotationally connected;

[0041] Furthermore, the two legs 5 are arranged around the outer side of the connecting disk 2 , and the two legs 5 are respectively close to both sides of the central axis of the connecting disk 2 , and the legs 5 are away from the second support rod 4 .

[0042] Furthermore, a clamping jaw 511 is rotatably connected to the second upper rod body 51, and a locking piece 512 is rotatably connected to the outer side of the clamping jaw 511. The locking piece 512 is detachably connected to the second upper rod body 51, and the rotation angle of the clamping jaw 511 is fixed by the locking piece 512; a cross bar 513 is clamped on the clamping jaw 511, and the contact point where the clamping jaw 511 clamps the cross bar 513 is located in the middle of the cross bar 513. When the support leg 5 is placed on the ground, the cross bar 513 can increase the area of ​​the support leg 5 supporting the ground, thereby improving the stability of the bracket when it is placed on the ground.

[0043] Please refer to Figure 6 、 Figure 9 、 Figure 12 and Figure 13 .

[0044] A connecting post 61 is horizontally passed through the first connecting member 6, and both ends of the connecting post 61 extend from the first connecting member 6. The connecting post 61 is close to one end of the first connecting member 6, and a limiting post 62 extends from one end of the first connecting member 6. The second connecting member 7 is provided with a mounting groove 71, and both sides of the inner wall of the mounting groove 71 are penetrated by a slide groove 711. The second connecting member 7 is provided with a limiting hole 712, which is located in the mounting groove 71 and parallel to the slide groove 711. The first connecting member 6 is placed in the mounting groove 71, and the two ends of the connecting post 61 are respectively placed in the two slide grooves 711 for sliding contact.

[0045] The connection between the first upper rod 31 and the first connecting member 6 is located at the other end of the first connecting member 6, and the connection between the first lower rod 32 and the second connecting member 7 is located at the other end of the second connecting member 7; the connection between the second upper rod 51 and the first connecting member 6 is located at the other end of the first connecting member 6, and the connection between the second lower rod 52 and the second connecting member 7 is located at the other end of the second connecting member 7;

[0046] By pushing the first connecting member 6, one end of the first connecting member 6 slides in the mounting groove 71, and the limiting column 62 is snapped into the limiting hole 712 for detachable connection, so that the first connecting member 6 and the second connecting member 7 remain in the current state and cannot rotate; by pulling the first connecting member 6, the limiting column 62 is disengaged from the limiting hole 712, the first connecting member 6 slides a certain distance in the mounting groove 71 of the second connecting member 7, the connecting column 61 slides a certain distance in the slide groove 711, and the first connecting member 6 rotates a certain angle on the second connecting member 7 with the connecting column 61 as the rotation axis.

[0047] Please refer to Figure 7 and Figure 8 .

[0048] The first elastic hanging member 8 includes a tube fitting 81 and a slide rod 82; a spring 83 is sleeved on the outer side of the slide rod 82, one end of the slide rod 82 passes through the tube fitting 81, and the two ends of the spring 83 respectively touch the inner wall of the tube fitting 81 and the slide rod 82, and one end of the slide rod 82 is fixedly connected to a first limiting member 822, the first limiting member 822 is located on the outer side of the tube fitting 81, and a first buckle 821 extends from the first elastic hanging member 8, the first buckle 821 is located on the outer side of the slide rod 82, and the first buckle 821 is close to the other end of the slide rod 82; the spring 83 pushes the slide rod 82 to slide on the tube fitting 81, so that the slide rod 82 extends out of the tube fitting 81, and the first limiting member 822 limits the slide rod 82 on the tube fitting 81 to prevent the slide rod 82 from being ejected from the tube fitting 81 by the spring 83;

[0049] The connection between the first elastic hanger 8 and the first upper rod 31 is located outside the tube 81 of the first elastic hanger 8 ; the connection between the first elastic hanger 8 and the second support rod 4 is located outside the tube 81 of the first elastic hanger 8 .

[0050] Please refer to Figure 9 and Figure 10 .

[0051] The second elastic hanger 9 includes a first sleeve 91, a second sleeve and a tension spring 93; the first sleeve 91 and the second sleeve are both sleeved on the outside of the second upper rod body 51, the second sleeve is close to one end of the second upper rod body 51, and a second limiting member 911 is provided on the outside of the first sleeve 91, the second limiting member 911 passes through the first sleeve 91 and is fixedly connected to the second upper rod body 51, and the second limiting member 911 fixes the first sleeve 91 to the outside of the second upper rod body 51; the tension spring 93 is located between the first sleeve 91 and the second sleeve, and the two ends of the tension spring 93 are fixedly connected to the first sleeve 91 and the second sleeve respectively, and a second buckle 921 extends from the second elastic hanger 9, and the second buckle 921 is located on the outside of the second sleeve

[0052] Please refer to Figures 1-13 .

[0053] When installing, unfold the curtain 1; shift the first lower rod 32, the second lower rod 52 and the second support rod 4 to rotate and unfold on the connecting plate 2, shift the first upper rod 31 to rotate and unfold on the first lower rod 32, so that the first upper rod 31 and the first lower rod 32 are parallel to each other, push the first connecting piece 6 limiting column 62 of the first upper rod 31 to be stuck in the limiting hole 712 of the second connecting piece 7 of the first lower rod 32, and realize the unfolding of the first support rod 3; shift the second upper rod 51 to rotate and unfold on the second lower rod 52, so that the second upper rod 51 and the second lower rod 52 are parallel to each other, push the first connecting piece 6 limiting column 62 of the second upper rod 51 to be stuck in the limiting hole 712 of the second connecting piece 7 of the second lower rod 52, realize the unfolding of the supporting legs, and then rotate the clamping claw 511, After the cross bar 513 and the second upper rod body 51 are made perpendicular to each other, the rotating locking piece 512 limits the rotation of the clamping claw 511, the support foot is placed on the ground, and the cross bar 513 contacts the ground; the sliding bar 82 is pressed into the pipe 81 and the spring 83 is compressed, so that the first clip 821 can approach and be clamped in the first clamping groove 111, and the spring 83 pushes the sliding bar 82 out of the pipe 81 to further stretch the curtain 1, pull the second sleeve away from the first sleeve 91 and stretch the tension spring 93, so that the second clip 921 can approach and be clamped in the second clamping groove 112, and the tension spring 93 pulls the second sleeve to further stretch the curtain 1. While realizing the unfolding of the curtain 1, the curtain 1 also limits the rotation of the first support rod 3, the second support rod 4 and the support foot on the connecting plate 2, so that it maintains the current state.

[0054] When disassembling and storing, press the slide bar 82 into the tube 81 and compress the spring 83, so that the first buckle 821 can be disengaged from the first slot 111, pull the second sleeve away from the first sleeve 91 and stretch the tension spring 93, so that the second buckle 921 can be disengaged from the second slot 112, and after the curtain 1 is removed from the first support rod 3, the second support rod 4 and the support leg, the curtain 1 is rolled into a cylindrical shape to reduce the volume of the curtain 1; pull the first upper rod 31 The limiting column 62 of the first connecting member 6 is disengaged from the limiting hole 712 of the second connecting member 7 of the first lower rod body 32, and then the first upper rod body 31 is rotated to fold the first upper rod body 31 and the first lower rod body 32, and the first lower rod body 32 is rotated on the connecting plate 2 so that the first lower rod body 32 is stuck in the adjacent through groove 221; the second support rod 4 is rotated on the connecting plate 2 so that the second support rod 4 is stuck in the adjacent through groove 221; the rotating locking member 51 After the first support rod 3 and the second support leg 5 are folded, the user can put the first support rod 3 and the second support leg 5 into the closed position, so that the user can put the first support rod 3 and the second support leg 5 into the closed position.

[0055] The utility model provides a projection screen bracket with a small storage volume. When the user needs to fold up the screen, the first buckle and the second buckle are firstly peeled off from the first clamping slot and the second clamping slot respectively, thereby removing the screen and rolling up the screen into a cylindrical shape, thereby reducing the volume of the screen; because the first buckle and the second buckle no longer limit the position of the screen, the user can move the first support rod and the support leg to rotate in the same direction on the connecting disk, so that the first support rod and the support leg are parallel to each other, forming a cylindrical shape, thereby reducing the overall volume of the bracket; because the first support rod and the support leg surround the connecting disk, when the first support rod and the support leg are folded up, a circular space is formed between the first support rod and the support leg, and the user can place the rolled-up screen in the space, thereby facilitating the storage of the screen and protecting the screen from being worn during transportation.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A projection screen bracket with a small storage volume, used for supporting a screen, wherein the screen is provided with a plurality of first card slots and two second card slots, wherein the first card slots and the second card slots are both close to the edge of the screen, characterized in that: It includes a connecting plate, a plurality of first support rods and two supporting legs; The first support rod is rotatably connected to the connecting disk, and a plurality of the first support rods are arranged around the outer side of the connecting disk. The first support rod is provided with a first elastic hanger, and a first buckle extends from the first elastic hanger, and the first buckle is snapped into the first slot; The legs are rotatably connected to the connecting disk, and the two legs are arranged around the outer side of the connecting disk. A second elastic hanger is provided in the middle of the legs, and a second buckle extends from the second elastic hanger, and the second buckle is snapped into the second slot.

2. The projection screen bracket with a small storage volume according to claim 1, characterized in that: Multiple first support rods are respectively close to both sides of the connecting disk, and also include two second support rods, the second support rods are rotatably connected to the connecting disk, the two second support rods are arranged around the outside of the connecting disk, the second support rods are close to the central axis of the connecting disk, and the second support rods are also provided with a first elastic hanger.

3. The projection screen bracket with a small storage volume according to claim 2, characterized in that: The first support rod is composed of a first upper rod body and a first lower rod body, the first upper rod body is fixedly connected to a first connecting member, the first lower rod body is fixedly connected to a second connecting member, the first connecting member is rotatably connected to the second connecting member, the first elastic hanger is connected to the first upper rod body, and the first lower rod body is rotatably connected to the connecting disk.

4. The projection screen bracket with a small storage volume according to claim 3, characterized in that: The support leg consists of a second upper rod and a second lower rod, the second upper rod is also fixedly connected to the first connecting piece, the second lower rod is also fixedly connected to the second connecting piece, the second elastic hanger is connected to the second upper rod, and the second lower rod is rotatably connected to the connecting plate.

5. The projection screen bracket with a small storage volume according to claim 4, characterized in that: A connecting column passes through the first connecting member, a limiting column extends from the first connecting member, a mounting groove is provided on the second connecting member, sliding grooves are passed through both sides of the inner wall of the mounting groove, a limiting hole is provided on the second connecting member, the first connecting member is placed in the mounting groove, the two ends of the connecting column are respectively placed in the two sliding grooves for sliding contact, and the limiting column is snapped into the limiting hole for detachable connection.

6. The projection screen bracket with a small storage volume according to claim 5, characterized in that: The first elastic hanger includes a tube and a sliding rod, a spring is sleeved on the outer side of the sliding rod, the sliding rod passes through the tube, the two ends of the spring respectively touch the inner wall of the tube and the sliding rod, a first limiter is fixedly connected to the sliding rod, the first limiter is located on the outer side of the tube, and the first buckle is located on the sliding rod.

7. The projection screen bracket with a small storage volume according to claim 5, characterized in that: The second elastic hanger includes a first sleeve, a second sleeve and a tension spring. The first sleeve and the second sleeve are both sleeved on the outside of the second upper rod body. A second limit piece is provided on the outside of the first sleeve. The second limit piece passes through the first sleeve and is fixedly connected to the second upper rod body. The tension spring is located between the first sleeve and the second sleeve. The two ends of the tension spring are respectively fixedly connected to the first sleeve and the second sleeve. The second buckle is located on the second sleeve.

8. A projection screen bracket with a small storage volume according to any one of claims 6 or 7, characterized in that: The connecting disk is composed of a first disk body and a second disk body. The first disk body is provided with multiple first slots, and multiple first slots are close to the edge of the first disk body. The second disk body is provided with multiple second slots, and multiple second slots are close to the edge of the second disk body. The outer side of the second disk body is provided with multiple through slots, and the through slots are connected to the second slots. The first lower rod body is penetrated by a first rotating column, the second lower rod body is penetrated by a second rotating column, and the second support rod is penetrated by a third rotating column. The first rotating column, the second rotating column and the third rotating column are respectively placed between adjacent first slots and second slots.

9. The projection screen bracket with a small storage volume according to claim 8, characterized in that: The second upper rod body is rotatably connected to a clamping claw, the outer side of the clamping claw is rotatably connected to a locking piece, the locking piece is detachably connected to the second upper rod body, the clamping claw clamps a cross bar, and the contact point of the clamping claw clamping the cross bar is located in the middle of the cross bar.

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