CN113178149B

CN113178149B - Stable double-sided display roll screen and using method thereof

Info

Publication number: CN113178149B
Application number: CN202110235533.8A
Authority: CN
Inventors: 吴金兵
Original assignee: Nantong Zhongfa Display Equipment Co ltd
Current assignee: Nantong Zhongfa Display Equipment Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2022-12-23
Anticipated expiration: 2041-03-03
Also published as: CN113178149A

Abstract

The invention discloses a stable double-sided display roll screen and a use method thereof, belonging to the technical field of roll screens, the invention can trigger the positioning program of a poster in a joint pressing mode, a trigger post on a display frame body moves towards the inner side after being pressed, and then an expansion action is triggered by extruding a magnetic control ball, so that the magnetic field shielding state of the magnetic control ball on an electromagnet is destroyed, the magnetic field of the electromagnet can act on the trigger post through the magnetic control ball to force the inner part of the trigger post to form a negative pressure state, thereby adsorbing and fixing the poster, simultaneously giving a pulling force to the trigger post and indirectly acting on the poster to force the poster to be stably and well unfolded, the phenomena of folds, inequality and the like are not easy to occur, and the invention can well deal with windy outdoor environment, thereby greatly improving the display effect of the poster, meanwhile, the edge area is not easy to slightly curl, and the display life of the poster is prolonged.

Description

Stable double-sided display roll screen and using method thereof

Technical Field

The invention relates to the technical field of roll screen, in particular to a stable double-sided display roll screen and a using method thereof.

Background

The roll-off banner is also called a poster, a poster stand, a pop-up roll and the like in the advertising industry. It is common in street crossing with large stream of people to assist individual-family roadcast sales activities or temporary booths. The pop-top treasure frame is made of plastic or aluminum alloy as main material, and the poster is made of portrait paper and has two sizes of 0.8m2m and 0.6m1.6m. The substitute of the roll screen is street crossing, road flag, poster propaganda, sticker, etc.

From 2000, terminal display equipment is gradually developed in various industries, various props are selected to attract the eyeballs of customers for good sale of products, so that the purposes of sales promotion and profit are achieved, and only then, a brand can be more and more famous. Various showing stands, billboards, lamp boxes and display boards are in endless, and the interior style is even a five-flower eight-door. To facilitate distinguishing these advertising items, many names are often heard, most of them being self-proposed names. The roll-up banner is one of the roll-up banners, the roll-up bangbao is originally one of the showing stands, the materials of the roll-up bangbao are aluminum alloy, plastic steel, bamboo and the like, and people also refer to the roll-up bangbao or the roll-up bangbao, because the advertisement picture of the roll-up bangbao can be freely stretched and retracted, the roll-up bangbao is very convenient to carry, the picture can be pulled out of a box during showing activities, a folding support rod is arranged at the back of the roll-up bangbao, and the picture can be stretched straight and can be stored in the box when not used. However, no matter which type of the display shelf is changed, the cross bar is required to be arranged on the display shelf, the box is required to be arranged below the display shelf, and the support bar is required to be arranged in the middle of the display shelf, so that the skeleton of the finished product is in a transverse H shape, and in order to conveniently and uniformly distinguish the display shelves, the display shelves are called H-shaped display shelves or H-shaped display shelves, so that the X-shaped display shelves are easily imagined "

Present easy-to-draw is precious when the show, because the poster is flexible material mostly, consequently appear fold, phenomenon such as inequality when the show reduces the bandwagon effect easily, especially under windy outdoor environment, above-mentioned phenomenon appears more easily in the poster, and especially the marginal area of poster causes slight curling easily, not only reduces the bandwagon effect, still damages the poster easily simultaneously.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a stable double-sided display roll screen and a using method thereof, a positioning program of a poster can be triggered in a fitting and pressing mode, a trigger column on a display rack body moves towards the inner side after being pressed, and then an expansion action of the trigger column is triggered by squeezing a magnetic control ball, so that the magnetic field shielding state of the magnetic control ball on an electromagnet is damaged, the magnetic field of the electromagnet can act on the trigger column through the magnetic control ball to force the inside of the trigger column to form a negative pressure state, so that the poster is adsorbed and fixed, meanwhile, a pulling force is given to the trigger column and indirectly acts on the poster, the poster is forced to be stably and well unfolded, wrinkles and inequality phenomena are not easy to occur, and the outdoor environment with wind can be well met, so that the display effect of the poster is greatly improved, meanwhile, fine curling is not easy to occur in edge areas, and the display life of the poster is prolonged.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a two-sided show easy-to-draw precious of stable form, includes the location chassis, location chassis upper end fixedly connected with show shelf body, inlay in the show shelf body and be connected with a plurality of evenly distributed's accuse magnetism ball, a plurality of and the corresponding hole of sliding of accuse magnetism ball are seted up to show shelf body outer end, sliding connection has the assorted post that triggers in the hole that slides, and triggers the post and extend to the show shelf body outside, this internal one end of keeping away from the post that triggers of show shelf is inlayed and is installed the electro-magnet, accuse magnetism ball includes skeleton shell, accuse magnetism inner membrane and polylith magnetism shielding scale, accuse magnetism inner membrane is connected in skeleton shell inner, magnetism shielding evenly connected in the inner outer end of accuse magnetism inner membrane, and the in close contact between the magnetism shielding scale, accuse magnetism inner membrane is close to trigger post one end and has seted up the assorted hole that triggers, and triggers the post and extend to trigger downthehole and accuse magnetism inner membrane is connected.

Further, set up a plurality of evenly distributed's inflation hole on the skeleton shell, the interior intussuseption of accuse magnetism inner membrance is filled with water, receives the extrusion back of triggering the post at accuse magnetism inner membrance, and accuse magnetism inner membrance deformation then expands to the outside through the inflation hole thereupon, can appear the gap between the magnetic screen scale when accuse magnetism inner membrance inflation, and the magnetic field of electro-magnet can see through and act on triggering the post, and the water phase in the accuse magnetism inner membrance is more difficult for gas to be compressed, consequently receiving the extrusion back of triggering the post, accuse magnetism inner membrance can be smoothly and carry out inflation by a wide margin.

Furthermore, the skeleton shell adopts hard material to make, the accuse magnetism inner membrance adopts elasticity waterproof material to make, the magnetism shielding scale adopts high magnetic conductivity material to make, and the magnetism shielding scale can present complete magnetism shielding state when in close contact with, and the magnetic field of electro-magnet is difficult to see through accuse magnetism ball and acts on the trigger post, and under the setting effect of skeleton shell, the trigger post just can force its deformation inflation in case squeeze the accuse magnetism inner membrance to broken and fall complete magnetism shielding state.

Further, the negative pressure hole has been seted up on the post that triggers, the downthehole activity of negative pressure is inlayed and is had assorted negative pressure magnetic ball, and interference fit between negative pressure magnetic ball and the negative pressure hole, be connected with many elasticity reset wires between negative pressure downthehole wall and the negative pressure magnetic ball, when the magnetic field of electro-magnet acted on the post that triggers, negative pressure magnetic ball received to adsorb then move to the inboard to it is fixed to adsorb to form the negative pressure state at the negative pressure downthehole poster.

Further, negative pressure magnetic ball includes magnetism hemisphere, storage hemisphere and a plurality of perception cover, the perception cover evenly covers in storage hemisphere outer end, set up a plurality ofly on the storage hemisphere and perception cover assorted hourglass material hole, the magnetism hemisphere is receiving the magnetic attraction migration and is removing the back, and the downthehole negative pressure state of negative pressure can force the perception cover open and leak the material to the suggestion user adsorbs successfully.

Further, the perception cover is made of airtight elastic materials, a gap which is closed under a normal state is formed in the center of the perception cover, the perception cover is closed under the normal state, the phenomenon of material leakage cannot occur, air cannot be mixed, the gap of the perception cover is opened under the negative pressure environment, and therefore the phenomenon of material leakage is prompted.

Further, the magnetism hemisphere is located the one end that is close to accuse magnetic ball, the storage hemisphere intussuseption is filled with the suggestion powder, and the suggestion powder leaks to the external world easily after the perception cover is opened then independently triggers to show the looks reaction and indicates, ensures that the poster of this point adsorbs successfully, and then improves holistic fixed effect.

Furthermore, the prompting powder is a mixture of a thermoluminescent material and a self-heating material, the triggering column is made of a transparent light guide material, the prompting powder enters the negative pressure hole after leaking, the self-heating material reacts with oxygen in the air to generate heat, then the thermoluminescent material is heated to force the thermoluminescent material to start to emit light to prompt a user, and the triggering column conducts light to the outside more easily, so that the prompting effect is improved, and the thermoluminescent material can be clearly observed even outdoors.

Furthermore, the magnetism control ball is located on a connecting line between the triggering post and the electromagnet, the electromagnet is electrically connected with the control switch, the magnetism control ball can fully shield the magnetic field of the electromagnet in a normal state, the phenomenon that the triggering post is interfered is not prone to occurring, and a user can control the electromagnet through the control switch, so that the electromagnetic switch is convenient and fast.

A use method of a stable double-sided display roll screen comprises the following steps:

s1, opening a control switch of an electromagnet, and then pasting the to-be-displayed article along a trigger column on a display rack body;

s2, pressing the trigger columns one by one until the to-be-displayed articles are contacted with the display rack body, moving the trigger columns inwards to extrude the magnetic control balls to trigger the expansion action of the magnetic control balls, and destroying the complete magnetic field shielding state of the magnetic control balls;

s3, a magnetic field generated by the electromagnet acts on the trigger column to force the interior of the trigger column to form a negative pressure state, so that the to-be-displayed object is adsorbed and fixed, and meanwhile, a pulling force is given to the trigger column to force the to-be-displayed object to be stably and well unfolded;

and S4, after the triggering columns emit light, the point is indicated to be successfully adsorbed, and after all the triggering columns emit light, the display is finished.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) This scheme can trigger the location procedure of poster through the mode that the laminating was pressed, the post that triggers on the show shelf body is receiving to press the back inboard removal, then trigger its inflation action through extrusion accuse magnetic ball, destroy the magnetic field shielding state of accuse magnetic ball to the electro-magnet, therefore the magnetic field of electro-magnet can see through accuse magnetic ball and act on the post that triggers, force its inside negative pressure state that forms, thereby adsorb fixedly to the poster, give the pulling force of triggering post simultaneously, and act on the poster indirectly, force the stable good expansion of poster, be difficult for appearing the fold, inequality phenomenon, and the windy outdoor environment of reply that can be fine, thereby greatly improve the bandwagon effect of poster, the marginal area is difficult for appearing slight curling simultaneously, prolong the show life of poster.

(2) The expansion hole of having seted up a plurality of evenly distributed on the skeleton shell, the interior intussuseption of accuse magnetism is filled with water, receive the extrusion back of triggering the post at accuse magnetism inner membrance, accuse magnetism inner membrance deformation then expands to the outside through the expansion hole thereupon, can appear the gap between the magnetic screen scale when the inflation of accuse magnetism inner membrance, the magnetic field of electro-magnet can see through and act on triggering the post, and the water phase in the accuse magnetism inner membrance is more difficult for gas by the compression, consequently, after receiving the extrusion of triggering the post, the accuse magnetism inner membrance can carry out expansion by a wide margin smoothly.

(3) The skeleton shell adopts hard material to make, and the accuse magnetism inner membrance adopts elasticity waterproof material to make, and the magnetic screen scale adopts high magnetic conductivity material to make, and the magnetic screen scale can present complete magnetic screen state when in close contact with, and the magnetic field of electro-magnet is difficult to see through accuse magnetism ball and acts on triggering the post, under the setting effect of skeleton shell, triggers the post in case squeeze accuse magnetism inner membrance just can force its deformation inflation to broken complete magnetic screen state that falls.

(4) The negative pressure hole has been seted up on the post that triggers, and the downthehole activity of negative pressure is inlayed and is had assorted negative pressure magnetic ball, and interference fit between negative pressure magnetic ball and the negative pressure hole is connected with many elasticity silk that resets between negative pressure downthehole wall and the negative pressure magnetic ball, and when the magnetic field of electro-magnet acted on the post that triggers, negative pressure magnetic ball received to adsorb then move to the inboard to it is fixed to adsorb to form the negative pressure state at the downthehole poster of negative pressure.

(5) Negative pressure magnetic ball includes magnetism hemisphere, storage hemisphere and a plurality of perception cover, and the perception cover evenly covers in storage hemisphere outer end, has seted up a plurality ofly on the storage hemisphere and has covered assorted hourglass material hole with the perception, and the magnetism hemisphere is receiving the magnetic attraction migration and removes the back, and the downthehole negative pressure state of negative pressure can force the perception cover open and leak the material to the suggestion user adsorbs successfully.

(6) The perception cover adopts airtight elastic material to make, and perception cover center department sets up closed gap under the normal condition, and the perception cover is closed can not appear leaking the material phenomenon and can not sneak into the air under the normal condition yet, and the gap of perception cover is open under negative pressure environment to the material phenomenon that leaks appears and indicates.

(7) The magnetism hemisphere is located the one end that is close to accuse magnetism ball, and the storage hemisphere intussuseption is filled with the suggestion powder, and the suggestion powder leaks then independently triggers to show the looks reaction and indicates to the external world after the perception cover is opened easily, ensures that the poster of this point adsorbs successfully, and then improves holistic fixed effect.

(8) The prompting powder is a mixture of a thermoluminescent material and a self-heating material, the triggering column is made of a transparent light guide material, the prompting powder enters the negative pressure hole after leaking, the self-heating material reacts with oxygen in the air to generate heat, then the thermoluminescent material is heated to force the thermoluminescent material to start to emit light to prompt a user, and the triggering column conducts light to the outside more easily, so that the prompting effect is improved, and the thermoluminescent material can be clearly observed outdoors.

(9) The magnetic control ball is positioned on a connecting line between the triggering column and the electromagnet, the electromagnet is electrically connected with the control switch, the magnetic control ball can fully shield the magnetic field of the electromagnet in a normal state, the phenomenon that the triggering column is interfered is not easy to occur, and a user can control the electromagnet through the control switch, so that the electromagnetic switch is convenient and fast.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the body of the display stand of the present invention in a normal state;

FIG. 3 is a cross-sectional view of the body of the display shelf of the present invention in an attached state;

FIG. 4 is a schematic structural diagram of a magnetic control ball according to the present invention;

FIG. 5 is a schematic structural view of the inner magnetic control film of the present invention before and after expansion;

FIG. 6 is a schematic view of a triggering post according to the present invention;

FIG. 7 is a schematic structural view of a negative pressure magnetic ball according to the present invention.

The reference numbers in the figures illustrate:

the display rack comprises a positioning chassis 1, a display rack body 2, a triggering column 3, a magnetic control ball 4, a framework shell 41, a magnetic control inner membrane 42, a magnetic shielding scale 43, an electromagnet 5, a negative pressure magnetic ball 6, a magnetic hemisphere 61, a storage hemisphere 62, a sensing cover 63, a prompt powder 64 and an elastic reset wire 7.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1:

please refer to fig. 1-3, a two-sided show easy-to-draw treasured of stable form, including location chassis 1, location chassis 1 upper end fixedly connected with show shelf body 2, inlay in the show shelf body 2 and be connected with a plurality of evenly distributed's accuse magnetic ball 4, a plurality of holes that slide corresponding with accuse magnetic ball 4 are seted up to show shelf body 2 outer end, sliding connection has assorted trigger post 3 in the sliding hole, and trigger post 3 extends to the show shelf body 2 outside, the one end of keeping away from trigger post 3 in the show shelf body 2 is inlayed and is installed electro-magnet 5.

The magnetic control ball 4 is located on a connecting line between the triggering column 3 and the electromagnet 5, the electromagnet 5 is electrically connected with the control switch, the magnetic control ball 4 can fully shield the magnetic field of the electromagnet 5 in a normal state, the phenomenon that the triggering column 3 is interfered is not easy to occur, and a user can control the electromagnet 5 through the control switch, so that the electromagnetic trigger is convenient and fast.

The control switch is preferably in the form of a main switch and a sub-switch, all the electromagnets 5 can be controlled by the main switch, and meanwhile, the corresponding electromagnets 5 can be independently controlled by the sub-switch, so that the adsorption can be conveniently debugged again after the adsorption fails.

Referring to fig. 4-5, the magnetic control ball 4 includes a skeleton shell 41, a magnetic control inner membrane 42 and a plurality of magnetic shielding scales 43, the magnetic control inner membrane 42 is connected to the inner end of the skeleton shell 41, the magnetic shielding scales 43 are uniformly connected to the outer end of the magnetic control inner membrane 42, the magnetic shielding scales 43 are in close contact with each other, a matching trigger hole is formed at one end of the magnetic control inner membrane 42 close to the trigger post 3, and the trigger post 3 extends into the trigger hole and is connected with the magnetic control inner membrane 42.

The expansion holes which are uniformly distributed are formed in the framework shell 41, water is filled in the magnetism control inner membrane 42, after the magnetism control inner membrane 42 is extruded by the trigger column 3, the magnetism control inner membrane 42 deforms along with the expansion holes and then expands towards the outer side, gaps can be formed among the magnetic shielding scales 43 when the magnetism control inner membrane 42 expands, the magnetic field of the electromagnet 5 can penetrate through the trigger column 3, the water in the magnetism control inner membrane 42 is not easily compressed relative to gas, and therefore after the triggering column 3 is extruded, the magnetism control inner membrane 42 can smoothly expand to a large extent.

Skeleton shell 41 adopts hard material to make, and accuse magnetism inner membrance 42 adopts elasticity waterproof material to make, and magnetic shield scale 43 adopts high magnetic conductivity material to make, and magnetic shield scale 43 can present complete magnetic shield state when in close contact with, and the magnetic field of electro-magnet 5 is difficult to see through accuse magnetism ball 4 and acts on triggering post 3, under skeleton shell 41's setting effect, triggers post 3 in case squeeze accuse magnetism inner membrance 42 just can force its deformation inflation to broken complete magnetic shield state that falls.

Referring to fig. 6, a negative pressure hole is formed in the trigger post 3, a negative pressure magnetic ball 6 is movably embedded in the negative pressure hole, the negative pressure magnetic ball 6 and the negative pressure hole are in interference fit, a plurality of elastic reset wires 7 are connected between the inner wall of the negative pressure hole and the negative pressure magnetic ball 6, when a magnetic field of the electromagnet 5 acts on the trigger post 3, the negative pressure magnetic ball 6 is adsorbed and then moves towards the inner side, and therefore a negative pressure state is formed in the negative pressure hole to adsorb and fix the poster.

Referring to fig. 7, the negative pressure magnetic ball 6 includes a magnetic hemisphere 61, a storage hemisphere 62 and a plurality of sensing covers 63, the sensing covers 63 uniformly cover the outer end of the storage hemisphere 62, the storage hemisphere 62 is provided with a plurality of material leaking holes matched with the sensing covers 63, after the magnetic hemisphere 61 is moved by magnetic attraction, the negative pressure state in the negative pressure hole forces the sensing covers 63 to open for material leaking, so as to prompt a user to successfully adsorb the material.

Perception cover 63 adopts airtight elastic material to make, and perception cover 63 center department sets up closed gap under the normal condition, and the perception cover 63 is closed can not appear leaking the material phenomenon and can not sneak into the air under the normal condition, and the gap of perception cover 63 is open under negative pressure environment to the material phenomenon that leaks appears and indicates.

Magnetism hemisphere 61 is located the one end that is close to accuse magnetic ball 4, and storage hemisphere 62 intussuseption is filled with suggestion powder 64, and suggestion powder 64 leaks to the external world easily after perception cover 63 is opened then independently triggers to show the looks reaction and indicates, ensures that the poster of this point adsorbs successfully, and then improves holistic fixed effect.

The prompting powder 64 is a mixture of a thermoluminescent material and a spontaneous heating material, the triggering column 3 is made of a transparent light guide material, the prompting powder 64 enters the negative pressure hole after leaking, the spontaneous heating material reacts with oxygen in the air to generate heat, then the thermoluminescent material is heated to force the thermoluminescent material to start to emit light to prompt a user, and the triggering column 3 is easier to conduct light to the outside, so that the prompting effect is improved, and the thermoluminescent material can be clearly observed even outdoors.

s1, opening a control switch of an electromagnet 5, and then pasting the to-be-displayed article along a trigger column 3 on a display rack body 2;

s2, the triggering columns 3 are pressed one by one until the to-be-displayed articles are contacted with the display rack body 2, the triggering columns 3 move inwards to press the magnetic control balls 4 to trigger the expansion action of the magnetic control balls, and the complete magnetic field shielding state of the magnetic control balls 4 is destroyed;

s3, a magnetic field generated by the electromagnet 5 acts on the trigger column 3 to force the interior of the trigger column to form a negative pressure state, so that the to-be-displayed object is adsorbed and fixed, and meanwhile, the trigger column 3 is provided with a pulling force to force the to-be-displayed object to be stably and well unfolded;

and S4, after the triggering columns 3 emit light, indicating that the point is successfully adsorbed, and after all the triggering columns 3 emit light, displaying the completion.

The poster positioning device can trigger the positioning program of the poster in a fitting and pressing mode, the trigger column 3 on the display frame body 2 moves towards the inner side after being pressed, then the expansion action of the trigger column is triggered by squeezing the magnetic control ball 4, and the magnetic field shielding state of the magnetic control ball 4 on the electromagnet 5 is damaged, so that the magnetic field of the electromagnet 5 can act on the trigger column 3 through the magnetic control ball 4 to force the inside of the trigger column to form a negative pressure state, thereby adsorbing and fixing the poster, simultaneously giving a pulling force to the trigger column 3 and indirectly acting on the poster to force the poster to be stably and well unfolded, avoiding the phenomena of folds, inequality and the like, well coping with windy outdoor environment, greatly improving the display effect of the poster, avoiding the fine curling of edge areas and prolonging the display life of the poster.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.

Claims

1. The utility model provides a two-sided show easy-to-draw of stable form is precious, includes location chassis (1), location chassis (1) upper end fixedly connected with show shelf body (2), its characterized in that: the magnetic control ball type magnetic display rack is characterized in that a plurality of uniformly distributed magnetic control balls (4) are embedded and connected in the display rack body (2), a plurality of sliding holes corresponding to the magnetic control balls (4) are formed in the outer end of the display rack body (2), matched trigger columns (3) are connected in the sliding holes in a sliding mode, the trigger columns (3) extend to the outer side of the display rack body (2), an electromagnet (5) is embedded and installed at one end, far away from the trigger columns (3), in the display rack body (2), of the magnetic control balls (4), each magnetic control ball comprises a framework shell (41), a magnetic control inner membrane (42) and a plurality of magnetic shields (43), the magnetic control inner membrane (42) is connected to the inner end of the framework shell (41), the scales (43) are uniformly connected to the outer end of the magnetic control inner membrane (42) and are in close contact with the magnetic shield scales (43), matched trigger holes are formed in one end, close to the trigger columns (3), and the trigger columns (3) extend into the trigger holes and are connected with the magnetic control inner membrane (42);

a plurality of uniformly distributed expansion holes are formed in the framework shell (41), and water is filled in the magnetism control inner membrane (42);

the negative pressure hole has been seted up on triggering post (3), the downthehole activity of negative pressure is inlayed and is had assorted negative pressure magnetic ball (6), and interference fit between negative pressure magnetic ball (6) and the negative pressure hole, be connected with many elasticity silk that resets (7) between negative pressure downthehole wall and negative pressure magnetic ball (6).

2. A stable, double-sided display roll top banner according to claim 1, wherein: the framework shell (41) is made of a hard material, the magnetic control inner membrane (42) is made of an elastic waterproof material, and the magnetic shielding scales (43) are made of a high-permeability material.

3. A stable, double-sided display roll top banner according to claim 1, wherein: negative pressure magnetic ball (6) are including magnetism hemisphere (61), storage hemisphere (62) and a plurality of perception cover (63), perception cover (63) evenly covers in storage hemisphere (62) outer end, set up a plurality of and perception cover (63) assorted hole that leaks on storage hemisphere (62).

4. A stable, double-sided display roll top banner according to claim 3, wherein: the sensing cover (63) is made of airtight elastic materials, and a gap which is closed under a normal state is formed in the center of the sensing cover (63).

5. A stable two-sided display roll up according to claim 3, wherein: the magnetic hemisphere (61) is located at one end close to the magnetic control sphere (4), and the storage hemisphere (62) is filled with prompt powder (64).

6. A stable two-sided display roll top banner according to claim 5, wherein: the prompting powder (64) is a mixture of a thermoluminescent material and a self-heating material, and the trigger column (3) is made of a transparent light guide material.

7. A stable, double-sided display roll top banner according to claim 1, wherein: the magnetic control ball (4) is positioned on a connecting line between the trigger column (3) and the electromagnet (5), and the electromagnet (5) is electrically connected with a control switch.

8. The use method of a stable double-sided display roll top box according to any one of claims 1-7, wherein: the method comprises the following steps:

s1, turning on a control switch of an electromagnet (5), and then attaching the to-be-displayed article along a trigger column (3) on a display rack body (2);

s2, the trigger columns (3) are pressed one by one until the to-be-displayed articles are contacted with the display rack body (2), the trigger columns (3) move inwards to extrude the magnetic control balls (4) to trigger the expansion action of the magnetic control balls, and the complete magnetic field shielding state of the magnetic control balls (4) is damaged;

s3, a magnetic field generated by the electromagnet (5) acts on the trigger column (3) to force the interior of the trigger column to form a negative pressure state, so that the to-be-displayed object is adsorbed and fixed, and meanwhile, a pulling force is given to the trigger column (3) to force the to-be-displayed object to be stably and well unfolded;

s4, after the columns (3) to be triggered emit light, the point is indicated to be successfully adsorbed, and after all the columns (3) to be triggered emit light, the point is indicated to be completed.