Roll screen

Abstract

The embodiment of the utility model provides a roll-up banner, and relates to the field of advertising showing stands. A spring winding drum is arranged in the base, a rotating handle is arranged at the end part of the spring winding drum, and the rotating handle extends out of the base; by arranging the rotating handle, force can be stored for the spring winding drum again through the rotating handle after the spring winding drum is unloaded due to the fact that the locking pin is accidentally pulled out under the condition that the display cloth is not installed, and the effect that force can be simply and conveniently stored for the spring again under the condition that a user pulls out the locking pin by mistake is achieved.

Description

Technical Field

[0001] This utility model relates to the field of advertising display racks, and more particularly to a roll-up banner. Background Technology

[0002] Current roll-up banner bases on the market are generally made of aluminum alloy or plastic steel, which are lightweight and prone to tipping over. They are unsuitable for use in windy weather or in crowded areas, where accidental tipping is likely. Secondly, existing roll-up banners are cumbersome to install. If the spring locking pin is accidentally pulled before installation by the end customer, the internal spring quickly returns to its original position, reducing torque to zero and rendering the banner unusable. Restoring the spring deformation and torque to normal requires personnel familiar with the structure, which is either impossible or extremely difficult for ordinary end customers to perform. This effectively turns existing roll-up banners into disposable products, resulting in waste.

[0003] In the process of developing this utility model, the applicant discovered at least the following problems in the prior art:

[0004] Before installing the display, the user accidentally pulled out the spring locking pin, causing the torque to drop to zero and the user was unable to restore the torque. Utility Model Content

[0005] This utility model provides a roll-up banner to solve the problem that the torque is reduced to zero and the user cannot restore the torque when the user accidentally pulls out the spring locking pin before installation.

[0006] To achieve the above objectives, this utility model provides a roll-up banner, comprising: a base; a spring cylinder is disposed inside the base, and a rotating handle is disposed at the end of the spring cylinder, the rotating handle extending to the outside of the base.

[0007] Furthermore, the base is a cavity, and an injection port is provided on the top of the base.

[0008] Furthermore, a base groove is provided in the middle of the base along the length direction; a groove blocking plate is provided at one end of the base groove, and a semi-circular notch is provided at the top of the groove blocking plate;

[0009] The spring drum is installed in the groove of the base, and the rotating handle is supported and engaged with the semi-circular notch;

[0010] An inverted U-shaped cover plate is installed on the groove of the base;

[0011] The inverted U-shaped cover plate has a spreading and mounting opening along its length, which is parallel to the spring drum.

[0012] The rotating handle passes through one end of the inverted U-shaped cover and extends to the outside of the base.

[0013] Furthermore, the spring drum includes a rotatable drum component, a drum fixing component, and a spring connecting the drum component and the drum fixing component; the drum fixing component is installed inside the drum component, and one end of the drum fixing component protrudes outside the drum component;

[0014] The rotating handle is fixedly connected to one end of the cylindrical component;

[0015] One end of the inverted U-shaped cover plate is provided with a strip-shaped installation notch, which extends inward from the edge of the inverted U-shaped cover plate;

[0016] The rotating handle extends through the strip-shaped mounting notch to the outside of the base;

[0017] An installation window is provided at the other end of the inverted U-shaped cover plate;

[0018] One end of the roll fixing component can be detachably and fixedly installed in the mounting window.

[0019] Furthermore, the roll-up banner also includes a locking pin;

[0020] Locking holes that cooperate with each other are provided on the end faces of the inverted U-shaped cover plate and the spring drum on the same side;

[0021] The locking pin is removably installed in a mating locking hole on the same side end face of the inverted U-shaped cover plate and the spring drum.

[0022] Furthermore, the roll-up banner also includes a pole and pole fixing bolts, and the bottom end of the pole is provided with a threaded hole;

[0023] The base has one or more pole mounting notches on its side that mate with the outer side of the pole; the pole mounting notches are covered with U-shaped covers.

[0024] The upper end face of the shaped cover is provided with a rod insertion hole that mates with the upright rod;

[0025] The lower end face of the shaped cover is provided with a pole mounting hole;

[0026] The bottom of the upright passes through the upright insertion hole from top to bottom and is installed in the upright installation notch, with the bottom end of the upright abutting the lower end face of the U-shaped cover;

[0027] The pole fixing bolt passes through the pole mounting hole from bottom to top and is threadedly connected to the threaded hole at the bottom end of the pole.

[0028] The above technical solution has the following beneficial effects: by setting a rotating handle, if the locking pin is accidentally pulled out when the fabric is not installed, causing the spring drum to lose force, the spring drum can be recharged by rotating the handle, thus achieving the effect of easily recharging the spring even if the user accidentally pulls out the locking pin. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the rotating handle and locking pin on the opposite side of the base of a roll-up banner, which is one embodiment of this utility model.

[0031] Figure 2 This is a three-dimensional structural diagram of the base of a roll-up banner, one of the embodiments of this utility model, with the rotating handle and locking pin on opposite sides and without an inverted U-shaped cover or a C-shaped cover, as viewed from the upper left side.

[0032] Figure 3 This is a three-dimensional structural diagram of the base of a roll-up banner, one of the embodiments of this utility model, with the rotating handle and locking pin on opposite sides and without an inverted U-shaped cover or a c-shaped cover, as viewed from the upper right side.

[0033] Figure 4 This is a three-dimensional structural diagram of the rotating handle and locking pin on the base of a roll-up banner, one of the embodiments of this utility model.

[0034] Figure 5 This is a three-dimensional structural diagram of a roll-up banner base where the rotating handle and locking pin are on the same side and there is no inverted U-shaped cover plate, which is one of the embodiments of this utility model.

[0035] Figure 6 This is a three-dimensional structural diagram of a roll-up banner with three mounting notches on the base, which is one embodiment of this utility model.

[0036] Figure 7 This is a three-dimensional structural diagram of a roll-up banner without a fabric and a U-shaped cover, as viewed from the upper left side, according to one embodiment of this utility model.

[0037] Figure 8 This is a three-dimensional structural diagram of a roll-up banner with a display cloth installed, viewed from the upper right side, according to one embodiment of this utility model.

[0038] Figure 9This is a three-dimensional structural diagram of a roll according to one embodiment of the present utility model;

[0039] Figure 10 This is a three-dimensional structural schematic diagram of a spring accumulator according to one embodiment of the present utility model;

[0040] Figure 11 This is a three-dimensional structural diagram of the right end support cylinder of the drum, which is one embodiment of this utility model.

[0041] Figure 12 This is a schematic diagram showing the assembly positions of the left end support cylinder of the drum, the drum, the spring accumulator, the spring, the drum fixing component, the right end support cylinder of the drum, and the locking pin, which is one embodiment of this utility model.

[0042] Figure 13 This is a three-dimensional structural schematic diagram of a roll fixing component according to one embodiment of the present utility model;

[0043] Figure 14 This is a three-dimensional structural diagram of an inverted U-shaped cover plate according to one embodiment of the present utility model;

[0044] Figure 15 This is a three-dimensional structural schematic diagram of an inverted cap according to one embodiment of the present utility model;

[0045] Figure 16 This is a three-dimensional structural diagram of the base, which is one embodiment of this utility model.

[0046] The reference numerals in the attached diagram are as follows: 1. Base; 2. Spring drum; 21. Rotating handle; 11. Inlet; 12. Base groove; 121. Groove plug; 122. Semi-circular notch; 13. Inverted U-shaped cover; 131. Fabric spreading installation port; 22. Cylinder component; 23. Drum fixing component; 24. Spring; 132. Strip-shaped installation notch; 133. Installation window; 3. Locking pin; 4. Upright pole; 14. Upright pole installation notch; 15. C-shaped cover; 151. Upright pole insertion hole; 152. Upright pole installation hole; 5. Fabric spreading; 25. Drum; 26. Spring accumulator; 27. Left end support cylinder of the drum; 28. Right end support cylinder of the drum; 261. Spring accumulator body; 262. Rectangular plate; 231. First shaft portion; 232. Second shaft portion; 233. Third shaft portion; 234. Fourth shaft portion; 251. Axial groove; 281. Axial protrusion of the right end support cylinder; 271. Axial protrusion of the left end support column; 291. First locking hole; 292. Second locking hole; 293. Third locking hole; 294. Fourth locking hole; 295. Fifth locking hole. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] On the one hand, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 ,and Figure 7 As shown, this utility model provides a roll-up banner, including: a base 1, a spring cylinder 2 disposed inside the base 1, a rotating handle 21 disposed at the end of the spring cylinder 2, and the rotating handle 21 extending to the outside of the base 1.

[0049] In some embodiments, the spring in the spring roll spool 2 is typically pre-loaded and locked using a locking pin 3 before leaving the factory. When the user installs the display fabric 5 and pulls out the locking pin 3, the pre-loaded spring in the spring roll spool 2 is released, simultaneously driving the spring roll spool 2 to rotate and roll the display fabric onto the spool. When the display fabric needs to be displayed, it can be pulled out, and the spring is reloaded at the same time. However, the user may accidentally pull out the locking pin 3 before installing the display fabric. In this case, for traditional roll-up banner bases, since there is no rotating handle 21 to drive the rotation of the spring roll spool 2, the user cannot reload the spring before installing the display fabric, thus forcing the user to completely disassemble the roll-up banner base to fix the problem. This embodiment, by providing a rotating handle 21, allows the user to reload the spring in the above situation. Figure 1 As shown, the spring drum 2 is rotatably installed in the base box 1 and is parallel to the length direction of the base box 1. The spring drum 2 can rotate around its axis. A rotating handle 21 perpendicular to its left end face is provided at the center of the left end face of the spring drum 2. The center of the left end face of the spring drum 2 coincides with the axis of the spring drum 2.

[0050] The embodiments of the present invention have the following technical effects: by setting a rotating handle, if the locking pin is accidentally pulled out when the fabric is not installed, causing the spring drum to lose force, the spring drum can be recharged by rotating the handle, thus achieving the effect of easily recharging the spring even if the user accidentally pulls out the locking pin.

[0051] Furthermore, such as Figure 1 As shown, the base 1 is a cavity, and an injection port 11 is provided on the top of the base 1.

[0052] In some embodiments, the base of the roll-up banner can be filled with water or sand through the inlet 11 to increase its overall weight and effectively prevent tipping. Installation is simple; by simply rotating the accessory (handle 21), the spring can be restored to its normal torque, achieving the goal of easy operation for anyone and effective tipping prevention. After filling, the inlet 11 can be sealed with a cap that mates with it.

[0053] Furthermore, such as Figure 1 , Figure 2 and Figure 16 As shown, a base groove 12 is provided in the middle of the base 1 along the length direction; a groove blocking plate 121 is provided at one end of the base groove 12, and a semi-circular notch 122 is provided at the top of the groove blocking plate 121.

[0054] The spring drum 2 is installed in the base groove 12, and the rotating handle 21 is supported and engaged with the semi-circular notch 122;

[0055] An inverted U-shaped cover plate 13 is installed on the base groove 12;

[0056] like Figure 14 As shown, the inverted U-shaped cover plate 13 has a spreading and mounting opening 131 in the middle along the length direction, which is parallel to the spring drum 2;

[0057] The rotating handle 21 passes through one end of the inverted U-shaped cover plate 13 and extends to the outside of the base 1.

[0058] In some embodiments, such as Figure 1 and Figure 2 As shown, a groove stopper 121 is provided at the left end of the base groove 12. The rotating handle 21 is fixedly connected to the left end of the spring drum 2. The rotating handle 21 is supported in the semi-circular notch 122. The rotating handle 21 passes through the left end of the inverted U-shaped cover plate 13 and extends to the outside of the base 1. The inverted U-shaped cover plate 13 is installed on the base groove 12 by bolts for easy disassembly.

[0059] Furthermore, such as Figure 1 , Figure 2 and Figure 8 , Figure 12 As shown, the spring drum 2 includes a rotatable drum component 22, a drum fixing component 23, and a spring connecting the drum component 22 and the drum fixing component 23; the drum fixing component 23 is installed inside the drum component 22, and one end of the drum fixing component 23 protrudes outside the drum component 22.

[0060] The rotating handle 21 is fixedly connected to one end of the cylindrical component 22;

[0061] like Figure 14 As shown, one end of the inverted U-shaped cover plate 13 is provided with a strip-shaped installation notch 132, which extends inward from the edge of the inverted U-shaped cover plate 13;

[0062] The rotating handle 21 extends through the strip-shaped mounting notch 132 to the outside of the base 1;

[0063] An installation window 133 is provided at the other end of the inverted U-shaped cover plate 13;

[0064] One end of the roll fixing component can be detachably and fixedly installed in the mounting window.

[0065] In some embodiments, such as Figure 1 , Figure 2 and Figure 8 , Figure 12 As shown, the left end of the cylindrical component 22 is connected to the rotating handle 21; the drum fixing component 23 passes through the inside of the cylindrical component 22 from the right end, and the right end of the drum fixing component 23 protrudes from the outside of the cylindrical component 22; a strip-shaped mounting notch 132 is provided on the left end face of the inverted U-shaped cover plate 13, and the strip-shaped mounting notch 132 is vertically aligned with the semi-circular notch 122. When the inverted U-shaped cover plate 13 is closed, the rotating handle 21 slides relative to the bottom of the strip-shaped mounting notch 132 from the opening of the strip-shaped mounting notch 132, so that the bottom of the strip-shaped mounting notch 132 and the semi-circular notch 122 fix the position of the rotating handle 21. After installation, the rotating handle 21 can only rotate within the space enclosed by the bottom of the strip-shaped mounting notch 132 and the semi-circular notch 122, thereby achieving the supporting and limiting effect on the left end of the spring drum 2. The shape of the right end of the drum fixing component 23 matches the shape of the mounting window 133 provided on the right end of the inverted U-shaped cover plate 13. For example, they can have the same shape and size. The right end of the drum fixing component 23 passes into the mounting window 133 provided on the right end of the inverted U-shaped cover plate 13 to support and fix the right end of the spring drum 2.

[0066] The embodiments of the present invention have the following technical effects: the installation method between the spring drum 2, the inverted U-shaped cover plate 13 and the base is simple and convenient for disassembly and maintenance.

[0067] Furthermore, such as Figure 3 , Figure 8 , Figure 4 and Figure 5 As shown, the roll-up banner also includes a locking pin 3;

[0068] Locking holes that cooperate with each other are provided on the end faces of the inverted U-shaped cover plate 13 and the spring drum 2 on the same side;

[0069] The locking pin 3 is removably installed in a mutually cooperating locking hole provided on the same side end face of the inverted U-shaped cover plate 13 and the spring drum 2.

[0070] In some embodiments, the locking pin 3 can be located at the left or right end of the inverted U-shaped cover plate 13 and the spring cylinder 2, as long as they are on the same end. Locking holes for the locking pin 3 are provided on the same end face of the inverted U-shaped cover plate 13 and the spring cylinder 2. The locking pin 3 passes through the aligned locking holes on the inverted U-shaped cover plate 13 and the spring cylinder 2, thus locking the spring cylinder 2 and preventing the release of its spring's stored force. Preferably, the locking pin 3 and the mating locking holes are located at the same end as the rotating handle 21, making it convenient for a single person to directly operate the locking pin 3 to lock the spring cylinder 2 after adjusting the spring's stored force by rotating the handle. If the rotating handle and the locking pin 3 are located at opposite ends of the base, due to the base's length, two people may be needed to insert the locking pin 3 after adjusting the spring's stored force by rotating the handle.

[0071] Furthermore, such as Figure 6 , Figure 7 and Figure 8 As shown, the roll-up banner also includes a pole 4 and pole fixing bolts, and the bottom end of the pole 4 is provided with a threaded hole;

[0072] The base 1 has one or more pole mounting notches 14 on its side that mate with the outer side of the pole 4; the pole mounting notches 14 are covered with U-shaped covers 15.

[0073] like Figure 15 As shown, the upper end face of the U-shaped cover 15 is provided with a pole insertion hole 151 that mates with the pole 4;

[0074] The lower end face of the inverted cap 15 is provided with a pole mounting hole 152;

[0075] The bottom of the upright 4 passes through the upright insertion hole 151 from top to bottom and is installed in the upright mounting notch 14. The bottom end of the upright 4 rests on the lower end face of the U-shaped cover 15.

[0076] The pole fixing bolt passes through the pole mounting hole 152 from bottom to top and is threadedly connected to the threaded hole at the bottom end of the pole 4.

[0077] In some embodiments, the base is provided with one or more pole mounting notches 14 that mate with the outer surface of the pole 4, allowing for convenient selection of installing a single pole or two poles. For example, the number of pole mounting notches 14 can be one, two, or three. When there is one pole mounting notch 14, it is located in the middle of the base; when there are two pole mounting notches 14, they are symmetrically distributed at both ends of the base; when there are three pole mounting notches 14, they are evenly distributed along the length of the base.

[0078] Furthermore, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the cylinder component 22 includes: a drum 25, a spring accumulator 26, a left end support cylinder 27, and a right end support cylinder 28.

[0079] The spring accumulator 26 includes a spring accumulator body 261 and a plurality of rectangular plates 262 that are perpendicular to the spring accumulator body 261 and evenly distributed along the circumference of the spring accumulator body 261 at the left end of the spring accumulator body 261.

[0080] The roll fixing component 23 includes: a cylindrical first shaft portion 231, a cylindrical second shaft portion 232, a disc-shaped third shaft portion 233, and a cuboid-shaped fourth shaft portion 234, which are coaxially fixedly connected from left to right; the diameter of the first shaft portion 231 is smaller than the diameter of the second shaft portion 232; the diameter of the second shaft portion 232 is smaller than the diameter of the third shaft portion 233;

[0081] The spring energy storage cylinder 261 is rotatably sleeved on the left side of the first shaft portion 231;

[0082] The spring 24 is sleeved on the first shaft portion 231 and located between the spring storage cylinder 26 and the second shaft portion 232. The right end of the spring 24 is fixedly connected to the left end of the second shaft portion 232, and the left end of the spring 24 is fixedly connected to the right end of the rectangular plate 262.

[0083] The right end support cylinder 28 of the drum is coaxially rotatably sleeved on the second shaft portion 232, and the right end of the right end support cylinder 28 of the drum slides in contact with the left end of the third shaft portion 233.

[0084] The drum fixing component 23, which is equipped with the spring 24, the spring accumulator 26 and the right end support cylinder 28 of the drum, is installed inside the drum 25, and the left end of the third shaft portion 233 is aligned with the right end of the drum 25.

[0085] The inner surface of the roll 25 is provided with an axial groove 251 that cooperates with the plurality of rectangular plates 262.

[0086] The outer cylindrical surface of the right end support cylinder 28 of the drum is provided with an elongated right end support cylinder axial protrusion 281 that cooperates with the axial groove 251.

[0087] The outer cylindrical surface of the left end support cylinder 27 of the drum is provided with an elongated left end support column axial protrusion 271 that cooperates with the axial groove 251.

[0088] The left end support cylinder 27 of the drum is sleeved inside the left end of the drum 25;

[0089] The center of the left end face of the left end support cylinder 27 of the drum is connected to the rotating handle 21;

[0090] The right end face of the inverted U-shaped cover plate is provided with an installation window 133 that mates with the fourth shaft portion 234;

[0091] The fourth shaft portion 234 is inserted into and supported and fixed within the mounting window 133;

[0092] like Figure 3 , Figure 8 , Figure 11 and Figure 12 As shown, the right end face of the right end support cylinder 28 of the drum is provided with at least one first locking hole 291, and correspondingly, the third shaft portion 233 is provided with a third locking hole 293 that mates with the first locking hole 291, and the right end face of the inverted U-shaped cover plate is provided with at least one second locking hole 292; wherein, the first locking hole 291, the second locking hole 292 and the third locking hole 293 are aligned; or, as Figure 4 and Figure 5 As shown, the left end face of the left end support cylinder 27 of the drum is provided with at least one fourth locking hole 294, and correspondingly, the left end face of the inverted U-shaped cover plate is provided with at least one fifth locking hole 295. The at least one fourth locking hole 294 and the at least one fifth locking hole 295 are aligned.

[0093] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to the specific order or hierarchy described.

[0094] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0095] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0096] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations falling within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is used in a manner similar to the term "including." Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0097] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pop-up banner, comprising: The base (1) is characterized in that, A spring reel (2) is arranged in the base (1), and an end of the spring reel (2) is provided with a rotating handle (21) extending to the outside of the base (1); The base (1) is a cavity, and a pouring inlet (11) is arranged at the top of the base (1); A base groove (12) is arranged in the middle of the base (1) along the length direction, and one end of the base groove (12) is provided with a groove blocking plate (121), and the top of the groove blocking plate (121) is provided with a semicircular notch (122); The spring reel (2) is installed in the base groove (12), and the rotating handle (21) is supported by the semicircular notch (122); A reverse U-shaped cover plate (13) is installed on the base groove (12); The middle of the reverse U-shaped cover plate (13) is provided with a spreading installation opening (131) parallel to the spring reel (2) along the length direction; The rotating handle (21) extends to the outside of the base (1) through one end of the reverse U-shaped cover plate (13).

2. The sign of claim 1, wherein The spring reel (2) comprises a rotatable barrel component (22), a reel fixing component (23), and a spring connecting the barrel component (22) and the reel fixing component (23); the reel fixing component (23) is installed in the barrel component (22), and one end of the reel fixing component (23) protrudes outside the barrel component (22); The rotating handle (21) is fixedly connected with one end of the barrel component (22); One end of the reverse U-shaped cover plate (13) is provided with a strip-shaped installation notch (132) extending inward from the edge of the reverse U-shaped cover plate (13); The rotating handle (21) extends to the outside of the base (1) through the strip-shaped installation notch (132); The other end of the reverse U-shaped cover plate (13) is provided with an installation window (133); One end of the reel fixing component (23) is detachably fixedly installed in the installation window (133).

3. The sign of claim 2, wherein the first and second portions are substantially parallel to each other. The pull-up banner further comprises a locking pin (3); The same side end surface of the reverse U-shaped cover plate (13) and the spring reel (2) is provided with mutually matched locking holes; The locking pin (3) is installed in the mutually matched locking holes on the same side end surface of the reverse U-shaped cover plate (13) and the spring reel (2) in a pull-out manner.

4. The sign of claim 1, wherein the first and second portions are substantially rectangular. The pull-up banner further comprises a vertical rod (4) and a vertical rod fixing bolt, and the bottom end of the vertical rod (4) is provided with a threaded hole; One or more vertical rod installation notches (14) matched with the outer side surface of the vertical rod (4) are arranged on the side surface of the base (1); and a H-shaped cover (15) covers the vertical rod installation notches (14); The upper end surface of the H-shaped cover (15) is provided with a vertical rod penetrating hole (151) matched with the vertical rod (4); The lower end surface of the H-shaped cover (15) is provided with a vertical rod installation hole (152); and The vertical rod (4) is installed in the vertical rod installation hole (152) in a detachable and fixed manner. The bottom of the vertical rod (4) penetrates into the vertical rod penetrating hole (151) from top to bottom, is installed in the vertical rod installation gap (14), and the bottom end of the vertical rod (4) is located on the lower end surface of the Z-shaped cover (15); The vertical rod fixing bolt is screwed into the threaded hole at the bottom end of the vertical rod (4) from bottom to top through the vertical rod installation hole (152).

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