Exhibition rack with stable structure

Abstract

The utility model provides an exhibition stand with a stable structure, which comprises a main frame body, the bottom of the main frame body is rotatably connected with two bottom feet, the bottom feet are assembled on the bottom of the main frame body through a base plate, the center of the base plate is provided with a riveting hole, the end face of the base plate is provided with a boss, and the two sides of the boss are provided with raised lines. The end face of each protruding strip comprises two oblique-line-shaped transition parts and a linear abutting part clamped between the two transition parts, the height of the edge of each transition part is smaller than that of the corresponding boss, and the height of each abutting part is larger than that of the corresponding boss. The footing is firstly contacted with the transition part on the raised line and then is transited to be contacted with the abutting part on the raised line, and as the height of the abutting part is greater than that of the boss, when the footing is contacted with the abutting part, the activity between the end part of the rivet and the footing as well as between the end part of the rivet and the base plate is reduced or even disappears, so that the connection between the footing and the base plate becomes tight; the shaking amplitude between the two parts is reduced and even disappears, so that the purpose of improving the stability of the exhibition stand is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of display racks, in particular to an exhibition rack with a stable structure. Background Art

[0002] like Figure 1 , 2 As shown, the exhibition stand is a portable publicity and display tool, which prints publicity and display contents on a display cloth 3 and winds it around a rotating shaft equipped with a torsion spring and capable of automatically returning to its original position. The rotating shaft is assembled in a main frame 1, and a push rod 4 is mounted on the head of the display cloth 3 for pulling out the display cloth 3 for use. When the display cloth 3 is retracted, the push rod 4 is stuck at the opening to prevent the display cloth 3 from excessively retracting. An open groove 2 is also arranged on the back of the main frame 1, with a plurality of support rods 5 built therein. The main frame 1 is covered with a box sleeve 6 to constrain the support rods 5 to be stored in the groove 2 and protect the main frame 1 from collision. A rotatable foot 7 is connected to the bottom of the main frame 1, which is usually stored at the bottom of the main frame 1 and is rotated to be vertical to the main frame 1 as a support when in use. When the display stand is in use, the box cover 6 is removed, the foot 7 is rotated to be perpendicular to the main frame 1 and placed on the ground, and the support rod 5 is plugged and fixed to form a long rod. Finally, the display cloth 3 is pulled out and the long rod is inserted into the bayonet openings opened at the top of the main frame 1 and the lower part of the top rod 4 to support the display cloth 3.

[0003] In order to simplify the structure and save costs, the base 7 of the existing exhibition stand is generally riveted to the bottom of the main frame 1 by rivets. The connection between the base 7 and the bottom of the main frame 1 is too tight, and the base 7 is subject to large resistance and is not easy to rotate. In order to ensure smooth rotation of the base 7, it is necessary to allow a loose range of movement between the end of the rivet and the base 7 and the main frame 1. However, this will increase the shaking between the base 7 and the main frame 1, affecting the stability of the exhibition stand. In particular, when the display 3 is unfolded for display, the overall height and area of ​​the exhibition stand are increased accordingly, the wind resistance becomes larger, and the shaking is more significant, which seriously affects the display effect of the exhibition stand. Utility Model Content

[0004] The purpose of the utility model is to provide a display stand with a stable structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a display stand with a stable structure, comprising a main frame, an open groove is provided on the back of the main frame, and the bottom of the main frame is rotatably connected to two base feet, the base feet are assembled on the bottom of the main frame through a pad, a rivet hole is provided in the center of the pad, a boss coaxial with the rivet hole is provided on the end surface of the pad away from the bottom of the main frame, two oppositely arranged convex strips are symmetrically arranged along the length direction of the main frame on both sides of the boss, the end surface of the convex strip comprises two oblique line transition parts and a straight line abutment part sandwiched between the two transition parts, the outer diameter of the boss is smaller than the width of the base foot, the distance between the two convex strips is larger than the width of the base foot, the height at the edge of the transition part is smaller than the height of the boss, the height of the abutment part is larger than the height of the boss, a rivet hole is also provided on the base foot, the bottom edge of the base foot is bent inwardly to form a corresponding slot, the rivet passes through the rivet hole on the pad, passes through the boss and passes through the rivet hole on the base foot to rotatably rivet the base plate and the base foot together.

[0006] Furthermore, the length of the abutting portion is not less than the width of the base.

[0007] Furthermore, countersunk corner holes are matched at the corner ends of the pads at both ends of the convex strips. The corner holes are smooth holes, and screws pass through the corner holes to fix the pads to the bottom of the main frame.

[0008] Furthermore, two corresponding bottom grooves are fixedly provided at the bottom of the main frame along the length direction of the main frame, and countersunk edges matching the bottom grooves are provided on both sides of the pad, and the pad is fixed in the bottom grooves by inserting the countersunk edges.

[0009] Furthermore, the corner ends of the pads at both ends of the convex strips are matched with corner holes, the corner holes are threaded holes, and the four corner holes constitute two pairs of diagonally distributed corner hole groups. Two corner holes in one pair of the two pairs of corner hole groups are matched with screws. When the tail of the screw is against the bottom of the main frame, the height of the screw head is greater than the top height of the base foot and less than the bottom height of the base foot.

[0010] Furthermore, both ends of the base foot are connected with plugs, which are inserted and fixed in the slots.

[0011] Furthermore, the plug is matched with a counterweight block, an intermediate plate is fixedly connected to the end surface of the counterweight block, a plurality of plug plates are arranged on the intermediate plate, and a slot matching the plug plate is opened on the plug along the length direction of the base foot.

[0012] Furthermore, the plug board and the slot are both dovetail structures.

[0013] Furthermore, the length of the counterweight block is not greater than the height of the main frame, the distance between the heads of the outer end faces of the first and tail plug plates on the middle plate is greater than the height of the groove, and the distance between the tails is less than the height of the groove, and the counterweight block can be inserted into the groove.

[0014] In the initial state, the feet of this exhibition stand with stable structure are stored parallel to the main frame body and under the bottom of the main frame body. The feet are located between two convex strips on the backing plate. To ensure smooth rotation of the feet, there is a loose clearance between the end of the rivet and the feet, and between the end of the rivet and the backing plate. When in use, the feet need to be rotated from parallel to the main frame body to perpendicular to the main frame body. During this process, the feet first contact the transition part on the convex strip and then gradually transition to contact with the abutting part on the convex strip. Since the height of the abutting part is greater than the height of the convex platform, when the feet contact the abutting part, the clearance between the end of the rivet and the feet, and between the end of the rivet and the backing plate decreases or even disappears, thus making the connection between the feet and the backing plate tighten, and the swaying amplitude between them becomes smaller or even disappears, achieving the purpose of increasing the stability of the exhibition stand. Description of the Drawings

[0015] Figure 1 Side view of the existing display stand with the spread not unfolded;

[0016] Figure 2 Side view of the existing display stand with the spread unfolded;

[0017] Figure 3 Bottom view of the present utility model;

[0018] Figure 4 Assembly schematic diagram of the feet, backing plate and the bottom of the main frame body when the feet of the present utility model are parallel to the main frame body;

[0019] Figure 5 Assembly schematic diagram of the feet, backing plate and the bottom of the main frame body when the feet of the present utility model are perpendicular to the main frame body;

[0020] Figure 6 Top view of the backing plate of the present utility model;

[0021] Figure 7 Cross-sectional view of the backing plate of the present utility model;

[0022] Figure 8 Top view of the feet of the present utility model;

[0023] Figure 9 Side view of the counterweight of the present utility model;

[0024] Figure 10 Assembly side view schematic diagram of the counterweight with the groove and the counterweight with the plug of the present utility model;

[0025] Figure 11 Rear view assembly schematic diagram of the counterweight with the groove of the present utility model;

[0026] Figure 12 Top view assembly schematic diagram of the counterweight with the plug of the present utility model.

[0027] In the figure: 1. main frame, 2. groove, 3. spreader, 4. top rod, 5. support rod, 6. box sleeve, 7. bottom foot, 8. pad, 9. rivet hole, 10. containing hole, 11. boss, 12. convex strip, 13. transition part, 14. abutment part, 15. corner hole, 16. countersunk edge, 17. screw, 18. rivet, 19. slot, 20. plug, 21. slot, 22. counterweight, 23. middle plate, 24. plug plate, 25. bottom slot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The structurally stable display stand described in this embodiment is as follows: Figures 3 to 12 As shown, it includes a main frame 1, an open groove 2 is opened on the back of the main frame 1, and two feet 7 are rotatably connected to the bottom of the main frame 1. The feet 7 are assembled on the bottom of the main frame 1 through a pad 8. A rivet hole 9 is opened in the center of the pad 8. A retaining hole 10 coaxial with the rivet hole 9 is arranged on the end surface of the pad 8 close to the bottom of the main frame 1. The aperture of the retaining hole 10 is larger than the aperture of the rivet hole 9. A boss 11 coaxial with the rivet hole 9 is arranged on the end surface of the pad 8 away from the bottom of the main frame 1. Two convex strips 12 arranged oppositely are symmetrically arranged on both sides of the boss 11 along the length direction of the main frame 1. The end surface of the convex strip 12 includes two oblique transition portions 13 and a convex portion 12 sandwiched between the two transition portions 13. The straight abutment portion 14 has an outer diameter of the boss 11 that is smaller than the width of the base 7, the distance between the two convex strips 12 is larger than the width of the base 7, the height at the edge of the transition portion 13 is smaller than the height of the boss 11, and the height of the abutment portion 14 is larger than the height of the boss 11. The base 7 is also provided with a rivet hole 9, and the bottom edge of the base 7 is bent inward to form a corresponding slot 19. The rivet 18 passes through the rivet hole 9 on the pad 8, passes through the boss 11 and passes through the rivet hole 9 on the base 7 to rotate and rivet the pad 8 and the base 7 together. The two ends of the rivet 18, one is located in the containing hole 10 on the pad 8, and the other is located in the cavity between the slots 19 at the bottom of the base 7, which will not interfere with assembly and placement.

[0030] In the initial state of this exhibition stand with stable structure, the feet 7 are stored parallel to the main frame 1 under the bottom of the main frame 1. The feet 7 are located between two convex strips 12 on the backing plate 8. To ensure smooth rotation of the feet 7, there is a loose clearance between the end of the rivet 18 and the feet 7, and between the end of the rivet 18 and the backing plate 8. When in use, the feet 7 need to be rotated from being parallel to the main frame 1 to being perpendicular to the main frame 1. During this process, the feet 7 first come into contact with the transition part 13 on the convex strip 12, and then gradually transition to contact with the abutting part 14 on the convex strip 12. Since the height of the abutting part 14 is greater than the height of the convex platform 11, when the feet 7 contact the abutting part 14, the clearance between the end of the rivet 18 and the feet 7, and between the end of the rivet 18 and the backing plate 8 decreases or even disappears, thereby tightening the connection between the feet 7 and the backing plate 8, and reducing or even eliminating the shaking amplitude between them, achieving the purpose of increasing the stability of the exhibition stand.

[0031] The backing plate 8 is preferably made of plastic, which can not only ensure strength but also be convenient for processing. The convex platform 11 is provided on the backing plate 8, which can increase the distance between the feet 7 and the main frame 1 after assembly, facilitating grasping the feet 7 for rotation. The end face of the convex strip 12 includes two diagonal transition parts 13 and a linear abutting part 14 clamped between the two transition parts 13. The height at the edge of the transition part 13 is less than the height of the convex platform 11, and the height of the abutting part 14 is greater than the height of the convex platform 11. During the process of rotating the feet 7 from being parallel to the main frame 1 to being perpendicular to the main frame 1, the feet 7 first rotate to correspond to the edge of the transition part 13, and continue to rotate until the height of the transition part 13 is the same as the height of the convex platform 11 when the feet 7 start to contact the transition part 13. Continuing to rotate the feet 7 gradually changes from contacting the transition part 13 to contacting the abutting part 14 until the feet 7 are perpendicular to the main frame 1. The structural design of the transition part 13 and the abutting part 14 can ensure the smooth progress of the rotation process. In actual design, the prerequisite for the rotational riveting between the feet 7 and the backing plate 8 is that the length of the rivet shaft of the rivet 18 needs to be greater than the sum of the thickness (height) of the backing plate 8, the convex platform 11 and the feet 7. For this exhibition stand with stable structure, in order to increase stability, the height of the abutting part 14 is greater than the height of the convex platform 11. It should be noted that the height difference between the abutting part 14 and the convex platform 11 should not be too large, and it is appropriate that the sum of the thickness (height) of the backing plate 8, the abutting part 14 and the feet 7 is slightly less than or equal to the length of the rivet shaft of the rivet 18.

[0032] In this exhibition stand with stable structure, the length of the abutting part 14 is not less than the width of the feet 7. When the feet 7 are perpendicular to the main frame 1, the feet 7 are completely placed on the abutting part 14, and the stability of the feet 7 is better.

[0033] In this exhibition stand with stable structure, the backing plate 8 can be directly fixed to the bottom of the main frame 1. Specifically, countersunk head corner holes 15 are respectively and correspondingly arranged at the corner ends of the backing plate 8 at both ends of the convex strip 12. The corner holes 15 are clearance holes, and the screws 17 pass through the corner holes 15 to fix the backing plate 8 to the bottom of the main frame 1.

[0034] For this exhibition rack with stable structure, the backing plate 8 can also be indirectly fixed to the bottom of the main frame 1. Specifically, two corresponding bottom grooves 25 are fixedly arranged along the length direction of the main frame 1 at the bottom of the main frame 1. Sunk edges 16 matching the bottom grooves 25 are arranged on both sides of the backing plate 8, and the backing plate 8 is tightly and fittingly inserted and fixed in the bottom grooves 25 through the sunk edges 16. Indirect fixing can avoid drilling holes in the bottom of the main frame 1 and the interference of the screws 17 extending into the interior of the main frame 1 with the internal structure.

[0035] For this exhibition rack with stable structure, corner holes 15 are arranged in a matching manner at the corner ends of the backing plate 8 at both ends of the rib 12. The corner holes 15 are threaded holes, and the four corner holes 15 form two pairs of corner hole groups distributed diagonally. Two of the corner holes 15 in one pair of the two diagonal corner hole groups are matched with screws 17. When the tails of the screws 17 abut against the bottom of the main frame 1, the height of the heads of the screws 17 is greater than the height of the top of the feet 7 and less than the height of the bottom of the feet 7. The screws 17 in this diagonal corner hole group play a limiting role to prevent excessive and random rotation of the feet 7 when they can rotate freely, thus reducing the excessive wear of the feet 7 and the backing plate 8 and prolonging the service life. After using for a period of time, the screws 17 can be replaced into the other diagonal corner hole group to balance the wear degree between the feet 7 and the backing plate 8. As Figure 4 、 5 shown, two of the corner holes 15 in the upper left and lower right pair of corner hole groups are matched with screws 17, and the feet 7 can only rotate counterclockwise from being parallel to the main frame 1 to being perpendicular to the main frame 1.

[0036] For this exhibition rack with stable structure, plugs 20 are connected to both ends of the feet 7. The plugs 20 are tightly and fittingly inserted and fixed in the card slots 19. The plugs 20 are generally made of plastic parts, which can prevent the sharp ends of the feet 7 from scratching the users, and the ends of the plugs 20 are rounded.

[0037] When the exhibition cloth 3 is displayed outdoors, the overall height and area of the exhibition rack increase accordingly. When the wind volume at the site is large, the exhibition rack is likely to be blown down. For this reason, for this exhibition rack with stable structure, the plugs 20 are also matched with counterweight blocks 22. The counterweight blocks 22 are made of materials with high density such as iron. An intermediate plate 23 is fixedly connected to the end face of the counterweight block 22, and a plurality of inserting plates 24 are arranged on the intermediate plate 23. A slot 21 matching the inserting plates 24 is arranged on the plug 20 along the length direction of the feet 7. When the wind volume is large, the counterweight blocks 22 are inserted into the plugs 20, which can increase the stability of the exhibition rack and reduce the probability of toppling.

[0038] For this exhibition rack with stable structure, both the inserting plates 24 and the slots 21 are in the shape of a dovetail. Along the direction from the counterweight block 22 to the intermediate plate 23, the thickness of the inserting plates 24 gradually increases. Along the direction from the top of the plug 20 to the bottom of the plug 20, the width of the slots 21 gradually increases.

[0039] The stable exhibition stand structure is as follows Figures 10 to 12 As shown, the length of the counterweight block 22 is not greater than the height of the main frame body 1. The distance between the outer end faces of the head parts of the first and last insertion plates 24 on the middle plate 23 is greater than the height of the groove 2, and the distance between the tail parts is less than the height of the groove 2. The counterweight block 22 can be inserted into the groove 2. The middle plate 23 and the insertion plates 24 are made of plastic and have a certain amount of deformation. When inserting, the first and last insertion plates 24 on the middle plate 23 can be slightly deformed inward to be inserted. The counterweight block 22 can be stored in the open groove 2 opened on the back of the main frame body 1, and the insertion plates 24 can also assist in erecting and fixing the support rod, avoiding the need for stacking between the groove 2 and the box sleeve.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display stand with a stable structure, comprising a main frame (1), an open groove (2) is provided on the back of the main frame (1), and two feet (7) are rotatably connected to the bottom of the main frame (1), characterized in that: The foot (7) is assembled on the bottom of the main frame (1) through a pad (8), a rivet hole (9) is provided in the center of the pad (8), a boss (11) coaxial with the rivet hole (9) is provided on the end surface of the pad (8) away from the bottom of the main frame (1), two convex strips (12) arranged opposite to each other are symmetrically arranged on both sides of the boss (11) along the length direction of the main frame (1), the end surface of the convex strip (12) includes two oblique transition parts (13) and a straight abutment part (14) sandwiched between the two transition parts (13), and the outer diameter of the boss (11) is less than The width of the base (7) is such that the distance between the two convex strips (12) is greater than the width of the base (7); the height of the edge of the transition portion (13) is less than the height of the boss (11); the height of the abutment portion (14) is greater than the height of the boss (11); a rivet hole (9) is also provided on the base (7); the bottom edge of the base (7) is bent inward to form a corresponding slot (19); a rivet (18) passes through the rivet hole (9) on the backing plate (8), passes through the boss (11) and passes through the rivet hole (9) on the base (7) to rotate and rivet the backing plate (8) and the base (7) together.

2. The structurally stable display stand according to claim 1, characterized in that: The length of the abutting portion (14) is not less than the width of the base foot (7).

3. The structurally stable display stand according to claim 1 or 2, characterized in that: Countersunk corner holes (15) are matched and arranged at the corner ends of the pad (8) at both ends of the convex strip (12); the corner holes (15) are smooth holes; screws (17) pass through the corner holes (15) to fix the pad (8) to the bottom of the main frame (1).

4. The structurally stable display stand according to claim 1 or 2, characterized in that: The bottom of the main frame (1) is fixedly provided with two corresponding bottom grooves (25) along the length direction of the main frame (1), and countersunk edges (16) matching the bottom grooves (25) are provided on both sides of the backing plate (8), and the backing plate (8) is inserted and fixed in the bottom grooves (25) through the countersunk edges (16).

5. The structurally stable display stand according to claim 4, characterized in that: Corner holes (15) are matched at the corner ends of the pads (8) at both ends of the convex strip (12); the corner holes (15) are threaded holes; the four corner holes (15) form two pairs of diagonally distributed corner hole groups; two corner holes (15) in one pair of the two pairs of corner hole groups are matched with screws (17); when the tail of the screw (17) abuts against the bottom of the main frame (1), the height of the head of the screw (17) is greater than the top height of the foot (7) and less than the bottom height of the foot (7).

6. The structurally stable display stand according to claim 1 or 2, characterized in that: Both ends of the base foot (7) are connected with plugs (20), and the plugs (20) are inserted and fixed in the card slot (19).

7. The structurally stable display stand according to claim 6, characterized in that: The plug (20) is also matched with a counterweight block (22), an intermediate plate (23) is fixedly connected to the end surface of the counterweight block (22), a plurality of plug plates (24) are arranged on the intermediate plate (23), and a slot (21) matching the plug plate (24) is opened on the plug (20) along the length direction of the base (7).

8. The structurally stable display stand according to claim 7, characterized in that: The plug board (24) and the slot (21) are both dovetail structures.

9. The structurally stable display stand according to claim 8, characterized in that: The length of the counterweight block (22) is no greater than the height of the main frame (1); the distance between the heads of the outer end faces of the head and tail plug plates (24) on the middle plate (23) is greater than the height of the groove (2); the distance between the tail ends is less than the height of the groove (2); and the counterweight block (22) can be plugged into the groove (2).

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