Display rack with gust resistance

Abstract

The utility model relates to the technical field of display racks, in particular to a display rack with gust resistance. The display rack comprises a base, two vertical side rods and a horizontal top rod, a rectangle is defined by the base, the side rods and the top rod, the display rack further comprises at least two rotating plates with rectangular front views, and the at least two rotating plates are sequentially arranged in the vertical direction; the at least two rotating plates are rotationally connected between the two side rods; and the center of gravity of the rotating plate is not higher than the symmetric line in the horizontal direction of the rotating plate. According to the display rack, the rotating plate is blown to rotate when gust blows, the contact area of the whole display rack and airflow in the vertical direction is reduced, and the probability that the display rack is blown down by the gust is reduced; after the gust blows, the gravity center of the rotating plate is not higher than the symmetric line in the horizontal direction of the rotating plate, the rotating plate can restore to the vertical state under the action of gravity, the stable exhibition state continues to be presented, and the technical problem that in the prior art, an exhibition rack is difficult to resist the gust is solved.

Description

Technical Field

[0001] The present application relates to the technical field of display racks, and in particular to a display rack capable of resisting gusts of wind. Background Art

[0002] On-site exhibitions are an important means of disseminating information, and display stands are often used for this purpose. Traditional display stands consist of a base, two side bars, and a top bar. The base is placed on the ground, while the top bar is parallel to the base and fixedly connected to the base by two parallel side bars, forming a rectangular shape. Hooks are located above and below the side bars. Posters or advertising papers with holes around the edges are hung on these hooks for promotional purposes, recruitment, advertising, meetings, or other information. However, if the posters or advertising papers are large, these display stands are more susceptible to being blown over by the wind.

[0003] In response to the above problems, the Chinese utility model patent with authorization announcement number CN209895746U discloses a windproof recruitment advertising stand. It can be seen from its description and drawings that the advertising stand has three display panels equidistantly arranged along the height direction between two side rods. Both ends of these three display panels are rotatably connected to the side rods, and the horizontal center line of the display panels is the rotation axis; and the tightness of the rotation between the display panels and the side rods can be adjusted. In this way, the billboard is divided by three display panels, reducing the wind-exposed area, thereby reducing the possibility of posters / advertising papers being blown down by the wind.

[0004] However, the aforementioned patent has the following technical issues: During gusty weather, wind direction and speed are unpredictable, making it difficult for operators to rotate the display panels before a gust arrives. Consequently, the display panels are likely to remain upright when a gust arrives. In this case, the so-called windproof display stand is no different from a traditional display stand and could still be easily blown over by gusts. Simply rotating the display panels to a certain angle would degrade the viewing experience.

[0005] Therefore, it is necessary to propose a display stand with stronger gust resistance. Utility Model Content

[0006] In order to solve the technical problem that display racks in the prior art are difficult to resist gusts of wind, the utility model provides a display rack with gust-resistant capabilities. The rotating plate and the side rods are eccentrically connected to each other, so that the rotating plate can rotate when a gust of wind comes and can be restored under the action of gravity after the gust of wind passes, which properly optimizes the technical problems in the prior art.

[0007] The utility model provides a display stand with gust resistance, which adopts the following technical solutions:

[0008] A display stand with gust resistance comprises a base, two vertical side bars, and a horizontal top bar. The base, the two side bars, and the top bar are fixedly enclosed to form a rectangle. The display stand further comprises at least two rotating plates, each of which is rectangular in front view. The at least two rotating plates are arranged in sequence along the vertical direction. The at least two rotating plates are rotatably connected between the two side bars. The horizontal symmetry line of the rotating plate is located below the rotation axis of the rotating plate, and the center of gravity of the rotating plate is not higher than the horizontal symmetry line of the rotating plate.

[0009] By adopting the above technical solution, when a gust of wind blows, the rotating plate will rotate, reducing the contact area of ​​the entire display stand with the airflow in the vertical direction, and reducing the probability of being blown down by the wind; after the gust of wind blows, the center of gravity of the rotating plate is no higher than its own horizontal symmetry line, and it will recover under the action of gravity, returning to the vertical state and continuing to present a stable display state.

[0010] In a specific possible implementation manner, one side of the rotating plate is a straight surface for mounting exhibits; the other side of the rotating plate is a convex curved surface.

[0011] By adopting the above technical solution, the airflow speed is faster when passing through the curved surface, and the high flow speed leads to low pressure, which creates a pressure difference between the upper and lower surfaces of the rotating plate. There is a downward pressure, which increases the friction between the base and the ground, further reducing the probability of the display stand being blown down by gusts of wind.

[0012] In a specific possible implementation manner, the shape of the longitudinal cross-section of the curved surface is half a teardrop shape; when the rotating plate is in a vertical state, the sharper end of the curved surface faces downward.

[0013] By adopting the above technical solution, the semi-tear drop-shaped design can give full play to the role of Bernoulli's principle and increase the grip of the base to a greater extent, which is the preferred technical solution.

[0014] In a specific possible implementation scheme, iron sheets are fixedly provided on the straight surface of the rotating plate near the four corners, and each iron sheet is detachably connected to a magnet by magnetic attraction.

[0015] By adopting the above technical solution, the operator can first remove the magnet, then stick the poster / advertising paper that is suitable for the size of the turntable on the turntable, and finally use the magnet to press the four corners of the poster and magnetically attract it to the iron sheet to complete the installation of the poster / advertising paper.

[0016] In a specific embodiment, the footprint of the base is larger than the front view area of ​​the rotating plate.

[0017] By adopting the above technical solution, when the rotating plate rotates, the center of gravity of the entire display stand also falls within the footprint of the base, thereby increasing the stability of the display stand.

[0018] In a specific feasible implementation scheme, the footprint of the base is 3 to 4 times the area of ​​the front view of the rotating plate, and when the rotating plate is horizontal to the ground, the vertical projection of the edge of the rotating plate farthest from its own rotation axis is within the footprint of the base.

[0019] By adopting the above technical solution and considering the stability of consumables and mechanical structure, the above solution is the better implementation scheme.

[0020] In a specific embodiment, a placement dish with an upward opening for placing weighted objects is fixedly connected to the top of the base.

[0021] By adopting the above technical solution, the operator can place weighted objects in the placement dish to increase the overall stability of the display stand.

[0022] In a specific embodiment, the placement dish is trumpet-shaped, and the end with a smaller diameter of the placement dish faces upward.

[0023] By adopting the above technical solution, the trumpet-shaped placement dish has a smaller area in the vertical direction, which can reduce the contact area with the airflow, and is smaller at the top and larger at the bottom, so it is more stable.

[0024] This application has at least the following beneficial effects:

[0025] The present application changes the position of the rotating shaft connecting the rotating plate and the side rod, so that when a gust of wind blows, the rotating plate can be blown to rotate, thereby reducing the contact area of ​​the entire display stand with the airflow in the vertical direction and reducing the probability of being blown over by the wind; after the gust of wind blows, since the center of gravity of the rotating plate is not higher than its own horizontal symmetry line, it will recover under the action of gravity, return to the vertical state, and continue to present a stable display state; the display stand of the present application does not need to rely on the operator to rotate the rotating plate in advance before the gust of wind arrives, and can rely on its own structure to resist the gust of wind.

[0026] The display board of the present application is divided into a straight surface and a curved surface. The straight surface is used to mount exhibits, and the curved surface is used to cooperate with the airflow to generate downward pressure, thereby increasing the stability of the display stand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of a display stand with gust resistance described in Example 1.

[0028] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0029] Figure 3 This is a front view of a display stand with gust resistance according to Example 2.

[0030] Figure 4This is a side view of a display stand with gust resistance described in Example 3 (the rotating plate is in the unfolded state).

[0031] Figure 5 This is a cross-sectional view of the rotating plate described in Example 3.

[0032] Figure 6 A schematic diagram illustrating the airflow path through the rotating plate.

[0033] Figure 7 This is a front view of a display stand with gust resistance according to Example 4.

[0034] Figure 8 for Figure 7 Enlarged schematic diagram of part B in the middle.

[0035] Explanation of the accompanying reference numerals: 1. base; 11. placement dish; 2. side rod; 3. top rod; 4. rotating plate; 41. iron sheet; 42. magnet. DETAILED DESCRIPTION

[0036] The existing advertising or poster display racks have a technical problem of being difficult to resist gusts of wind. The present application makes up for this defect to a certain extent by optimizing the mechanical structure.

[0037] Next, this application will be combined with specific embodiments and appendix Figures 1 to 8 , further illustrate the solution of this application.

[0038] Example 1

[0039] Reference Figure 1 and Figure 2 This embodiment discloses a display stand with gust resistance, which includes a base 1, two side rods 2, and a top rod 3. The base 1 is rectangular and sheet-shaped, and the material can be stainless steel or plastic; the side rods 2 can be hollow tubes, and the two side rods 2 are vertically fixedly connected to the upper surface of the base 1; the top rod 3 is mounted on the top of the two side rods 2 and fixedly connected to the side rods 2.

[0040] A square placement dish 11 with an upward opening is fixedly connected to the top of the base 1. First, the operator can place weighted objects in the placement dish 11 to increase the overall stability of the display stand. Second, the operator can use local materials: in the process of organizing an event, some bottled water or some books and materials may be involved. Most of these items are placed on the ground or piled on the table. With the placement dish 11, the above-mentioned items can be properly placed and the weight of the display stand can be increased, killing two birds with one stone.

[0041] The display stand also includes two rotating plates 4, which are flatly spread out in the vertical direction and arranged in sequence, that is, the projections of the two rotating plates 4 in the front view direction do not overlap; the front view of the rotating plates 4 is rectangular, which makes it easy to cover posters or advertising papers on the rotating plates 4 for display.

[0042] The ends on both sides of the rotating plate 4 are fixedly connected with rotating shafts, and corresponding rotating holes are opened on the side rods 2. The rotating shafts are rotatably connected in the rotating holes, thereby realizing the rotational connection between the rotating plate 4 and the side rods 2. Similarly, the rotating shafts can also be fixedly set on the side rods 2, and the rotating holes can be opened on the rotating plate 4, so that the rotating plate 4 and the side rods 2 can be connected without damping. In order to reduce the rotational resistance and improve the sensitivity of the rotation of the rotating plate 4, a ball bearing can also be set between the rotating shaft and the rotating hole. The line between the two rotating shafts is the rotation axis of the rotating plate 4, and the rotation axis is higher than the symmetry line of the rotating plate 4 in the horizontal direction. As a preferred embodiment, the rotation axis passes through the first quarter-division point of the rotating plate 4 from top to bottom. At the same time, the center of gravity of the rotating plate 4 itself is lower than its own horizontal symmetry line, or falls on its own horizontal line.

[0043] Furthermore, iron sheets 41 are fixed at the four corners of the straight surface of the rotating plate 4, and each iron sheet 41 is detachably connected to a magnet 42 by magnetic attraction. When installing a poster or advertising paper, the operator can first remove the magnet 42, and then stick the poster / advertising paper that is suitable for the size of the rotating plate 4 on the rotating plate 4, and finally use the magnet 42 to press the four corners of the poster / advertising paper and magnetically attract it to the iron sheet 41 to complete the installation. Compared with the roll-up banner, the installation method of this application is simpler.

[0044] Furthermore, the floor area of ​​the base 1 is larger than the front view area of ​​the rotating plate 4. Specifically, the floor area of ​​the base 1 can be 3 to 4 times the front view area of ​​the rotating plate 4. In this embodiment, the area of ​​the base 1 is about 3.6 times the front view area of ​​the rotating plate 4. When the rotating plate 4 is horizontal to the ground, the vertical projection of the side of the rotating plate 4 farthest from its own rotation axis is located within the floor area of ​​the base 1. This design, combined with the selection of materials, can ensure that when the rotating plate 4 rotates, the center of gravity of the entire display stand also falls within the floor area of ​​the base 1, which increases the stability of the display stand from the perspective of the mechanical structure; limiting the area of ​​the rotating plate 4 to a ratio of the floor area of ​​the base 1, considering the stability of consumables and mechanical structure, is a preferred implementation scheme.

[0045] The working principle of this embodiment is as follows: the present application changes the position of the rotation axis connecting the rotating plate 4 and the side rod 2, so that when a gust of wind blows, the rotating plate 4 can be blown to rotate, thereby reducing the contact area of ​​the entire display stand with the airflow in the vertical direction and reducing the probability of being blown down by the wind; after the gust of wind blows, since the center of gravity of the rotating plate 4 is not higher than its own horizontal symmetry line, it will recover under the action of gravity and return to the vertical state, continuing to present a stable display state; the display stand of the present application does not need to rely on the operator to rotate the rotating plate 4 in advance before the gust of wind arrives, and can rely on its own structure to resist the gust of wind.

[0046] Example 2

[0047] Reference Figure 3 The difference between this embodiment and embodiment 1 is that: the number of rotating plates 4 is three, and the three rotating plates 4 are arranged in sequence along the vertical direction; in the natural state, the rotating plates 4 maintain a vertical state. In this state, the three rotating plates 4 are almost attached to each other in sequence, but there is a gap between two adjacent rotating plates 4 to ensure that each rotating plate 4 can rotate freely.

[0048] The implementation principle of this embodiment is: when the poster / advertisement paper is large, the operator can adopt the solution of this embodiment to cut a whole poster / advertisement paper into three equal parts, and then cover them on the three rotating plates 4 in sequence. In this way, the three rotating plates 4 are almost attached to each other, and can be roughly pieced together to form a whole poster / advertisement paper in a natural state, thereby improving the visual effect.

[0049] Example 3

[0050] Reference Figures 4 to 6 The difference between this embodiment and embodiment 2 is that one side of the rotating plate 4 is a straight surface for detachably connecting the poster / advertising paper, and the other side is a convex curved surface. Specifically, the shape of the longitudinal cross-section of the curved surface is half a water drop shape; when the rotating plate 4 is in a vertical state, the sharper end of the curved surface faces downward.

[0051] The principle of this embodiment is as follows: According to Bernoulli's principle, when air flows, an increase in air velocity will cause the pressure generated by the air flow to decrease. Conversely, when the air flow slows down, the pressure will increase. The above-mentioned rotating plate 4 adopts this design. When a gust of wind passes by, the rotating plate 4 rotates so that the curved surface is generally facing downward and the side with the poster / advertising paper is generally facing upward. This makes the air flow faster when passing through the curved surface. The fast flow rate leads to low pressure, which creates a pressure difference between the upper and lower surfaces of the rotating plate 4, and there is a downward pressure; (See Figure 6 , Figure 6(The red arrow in the figure indicates the direction of airflow.) This downward pressure is transmitted to the base 1 via the shaft connecting the rotating plate 4 and the side rod 2, thereby increasing the friction between the base 1 and the ground, further reducing the probability of the display stand being blown over by gusts of wind. The semi-teardrop design can further utilize the Bernoulli principle to maximize the grip of the base 1 on the ground.

[0052] Example 4

[0053] Reference Figure 7 and Figure 8 The only difference between this embodiment and embodiment 3 is that the placement dish 11 is trumpet-shaped, and its smaller end faces upward. Specifically, a vertical line from any point along the top edge of the trumpet-shaped placement dish 11 to the base 1 forms an angle with the side wall of the placement dish 11 with the opening facing downward. The angle is in the range of 10 to 20 degrees, and 15 degrees is preferred in this embodiment. The angle should not be too large or too small. If it is too large, it will be difficult to place heavy objects, and if it is too small, the effect of reducing wind resistance will be negligible.

[0054] The implementation principle of this embodiment is: the trumpet-shaped placement dish 11 has a smaller area in the vertical direction, which can reduce the contact area with the airflow, and is smaller at the top and larger at the bottom, so it is more stable.

[0055] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make slight changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display stand with gust resistance, comprising a base (1), two vertical side bars (2), and a horizontal top bar (3), wherein the base (1), the two side bars (2), and the top bar (3) are fixedly enclosed to form a rectangle, and characterized in that: The invention also comprises at least two rotating plates (4) which are rectangular in front view, and the at least two rotating plates (4) are arranged in sequence along the vertical direction; the at least two rotating plates (4) are rotatably connected between the two side rods (2); the horizontal symmetry line of the rotating plate (4) is located below its own rotation axis, and the center of gravity of the rotating plate (4) is not higher than its own horizontal symmetry line.

2. The gust-resistant display stand according to claim 1, characterized in that: One side of the rotating plate (4) is a straight surface for mounting exhibits; the other side of the rotating plate (4) is a convex curved surface.

3. The gust-resistant display stand according to claim 2, characterized in that: The shape of the longitudinal cross-section of the curved surface is half a water drop shape; when the rotating plate (4) is in a vertical state, the sharper end of the curved surface faces downward.

4. The gust-resistant display stand according to claim 2, characterized in that: Iron sheets (41) are fixedly provided on the straight surface of the rotating plate (4) near the four corners, and each iron sheet (41) is detachably connected to a magnet (42) by magnetic attraction.

5. The gust-resistant display stand according to claim 1, characterized in that: The floor area of ​​the base (1) is larger than the front view area of ​​the rotating plate (4).

6. The gust-resistant display stand according to claim 5, characterized in that: The floor area of ​​the base (1) is 3 to 4 times the area of ​​the front view of the rotating plate (4), and when the rotating plate (4) is horizontal to the ground, the vertical projection of the side of the rotating plate (4) farthest from its own rotation axis is located within the floor area of ​​the base (1).

7. The gust-resistant display stand according to claim 1, characterized in that: A placement dish (11) with an upward opening for placing weighted objects is fixedly connected to the top of the base (1).

8. The gust-resistant display stand according to claim 7, characterized in that: The placement dish (11) is trumpet-shaped, and the end of the placement dish (11) with a smaller diameter faces upward.

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