Gap eliminating structure of height-adjustable folding box

Abstract

The utility model relates to the field of folding boxes, in particular to a gap eliminating structure of a height-adjustable folding box, the folding box comprises a telescopic corner post and a fixed corner post, the telescopic corner post is telescopically arranged in the fixed corner post, the telescopic corner post comprises two wing plates and two webs, the wing plates are vertically welded with the webs, and the two webs are vertically welded with the telescopic corner post. The web plate is located on the inner side of the edge of the wing plate, the gap eliminating structure comprises a plurality of gap adjusting plates, and the gap adjusting plates are evenly distributed in the length direction of the telescopic corner column and at least fill the space from the outer side of the web plate to the edge of the wing plate; when the telescopic corner columns are relatively fixed to the fixed corner columns, at least the gap adjusting plates exist in the inner cavities of the top plates of the fixed corner columns. The gap adjusting plate is locally welded on the outer side of the telescopic corner post, production operability is combined, the gap adjusting plate is independently polished, the precision requirement of the telescopic corner post during tailor welding is lowered, meanwhile, the contact area of the telescopic corner post and the inner cavity wall of the top plate of the fixed corner post is increased, and production efficiency is improved. The stability of gaps between the telescopic corner columns and the fixed corner columns is guaranteed, and the stability of the height-adjustable folding box is improved.

Description

Technical Field

[0001] The utility model relates to the field of folding boxes, in particular to a gap eliminating structure of a folding box with adjustable height. Background Art

[0002] Existing height-adjustable folding boxes generally adopt the structure of inner and outer corner columns, where the inner corner column is a telescopic corner column and the outer corner column is a fixed corner column, and the inner corner column is telescopic inside the outer corner column. The welding styles of the wing plate and the web plate of the telescopic inner corner column generally have the following two situations:

[0003] See also Figure 1 , there is a step on the outside of the connection between the wing plate and the web plate. This welding style is convenient for welding and can prevent the weld from exceeding the outside of the edge of the wing plate. However, the contact area between the telescopic corner column and the inner cavity of the fixed corner column top plate is small. As the service time increases, wear or rust will occur, resulting in a larger gap between the two, which will cause the telescopic corner column to shake more and lose functionality.

[0004] See also Figure 2 , there is no step on the outside of the connection between the wing plate and the web plate. Compared with the first welding style, this welding style can increase the contact surface between the telescopic corner column and the fixed corner column top plate, but this welding style requires beveling for welding. After welding, the weld bead that exceeds the wing plate needs to be polished clean, which requires a lot of work and high processing accuracy.

[0005] Therefore, the clearance between the telescopic corner post and the fixed corner post is extremely important: if the clearance between the telescopic corner post and the inner wall of the top plate of the fixed corner post is too large, the telescopic corner post will shake, and excessive shaking will lead to loss of functionality; if the clearance between the telescopic corner post and the inner wall of the top plate of the fixed corner post is too small, it will easily lead to difficulty in adjusting the telescopic corner post, and local wear and rust will make subsequent height adjustment difficult. Utility Model Content

[0006] The utility model aims to provide a gap elimination structure of a folding box with adjustable height, which can produce a telescopic corner column with less workload and still ensure the functionality after long-term use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gap elimination structure of a folding box with adjustable height, the folding box comprising a telescopic corner post and a fixed corner post, the telescopic corner post being telescopically arranged inside the fixed corner post, the telescopic corner post comprising two wing plates and two web plates, the wing plates being vertically welded to the web plates, and the web plates being located on the inner sides of the edges of the wing plates, the gap elimination structure comprising a plurality of gap adjustment plates, the gap adjustment plates being evenly distributed along the length direction of the telescopic corner post, and at least filling the space from the outer sides of the web plates to the edges of the wing plates; when the telescopic corner post is relatively fixed to the fixed corner post, at least the gap adjustment plates are present in the inner cavity of the top plate of the fixed corner post.

[0008] Preferably, the width of the gap adjustment plate is greater than or equal to the width of the top plate.

[0009] Preferably, the telescopic corner column is provided with a plurality of mounting holes along the length direction, the mounting holes penetrate through the two webs, the fixed corner column is provided with a positioning hole, and the positioning hole is located below the top plate; the gap adjustment plate is correspondingly provided above each of the mounting holes, and the distance between each group of the mounting holes and the gap adjustment plate is equal to the distance between the positioning hole and the top plate.

[0010] Preferably, the side surface of the gap adjustment plate is directly fixed to the web, both ends of the gap adjustment plate are respectively fixed to the wing plates, and the thickness of the gap adjustment plate is at least equal to the distance from the outer side of the web to the edge of the wing plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model partially welds a gap adjustment plate on the outer side of the telescopic corner column, and in combination with production operability, the gap adjustment plate is polished separately, thereby reducing the precision requirements when the telescopic corner column is welded, while increasing the contact area between the telescopic corner column and the inner wall of the top plate of the fixed corner column, thereby reducing the risk of the telescopic corner column being worn or rusted during subsequent use, causing the gap between the two to become larger and lose its use purpose; the entire solution ensures the stability of the gap between the telescopic corner column and the fixed corner column, and improves the stability of the height-adjustable folding box. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a cross-sectional view of a prior art telescopic corner column;

[0013] Figure 2 is a cross-sectional view of another prior art telescopic corner column;

[0014] Figure 3 It is an application schematic diagram of an embodiment of the utility model;

[0015] Figure 4 yes Figure 3A magnified schematic diagram of part A;

[0016] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle telescopic corner column;

[0017] Figure 6 yes Figure 3 Cross-sectional view of the junction between the middle telescopic corner column and the top plate. DETAILED DESCRIPTION

[0018] See also Figures 3 to 6 , the utility model discloses a gap elimination structure of a folding box with adjustable height, see Figure 3 The height-adjustable corner post of the folding box includes a telescopic corner post 1 and a fixed corner post 2. The telescopic corner post 1 is telescopically arranged inside the fixed corner post 2. The end of the fixed corner post 2 is provided with a top plate 21, which is a hollow square ring and has a certain width. The cross-sectional outer contour of the telescopic corner post 1 is slightly smaller than the inner cavity wall of the top plate 21, so that the telescopic corner post 1 can be pulled out to adjust the height. Figure 5 The telescopic corner column 1 in this embodiment is the same as that in the prior art. Figure 1 The telescopic corner column 1 comprises two wing plates 11 and two web plates 12. The wing plates 11 and the web plates 12 are vertically welded, and the web plates 12 are located on the inner side of the edge of the wing plates 11. After the wing plates 11 and the web plates 12 are welded, a step is formed on the outer side of the connection between the two.

[0019] The height adjustment of the folding box is in a step-by-step manner, generally with 4 to 5 gears. In this embodiment, 4 gears are taken as an example, that is, the telescopic corner column 1 is evenly provided with 4 mounting holes 13 along the length direction, that is, the 4 mounting holes 13 penetrate the two webs 12. The fixed corner column 2 is also provided with a positioning hole 22, and the positioning hole 22 is located below the top plate 21. Any mounting hole 13 can be relatively fixed to the positioning hole 22 by the latch 4, that is, the telescopic corner column 1 and the fixed corner column 2 can be relatively fixed by the latch 4.

[0020] The gap elimination structure includes a plurality of gap adjustment plates 3 welded to the outside of the telescopic corner column 1. The gap adjustment plates 3 are in the shape of long flat plates and at least fill the space from the outside of the web 12 to the edge of the wing plate 11. It should be noted that there are two spaces from the outside of the web 12 to the edge of the wing plate 11 in each telescopic corner column 1. The two spaces are symmetrical about the central axis of the telescopic corner column 1, and for each space, there are a plurality of gap adjustment plates 3 distributed along the length direction of the telescopic corner column 1. The side of the gap adjustment plate 3 is directly welded to the web 12, and the two ends of the gap adjustment plate 3 are respectively welded to the wing plate 11, that is, the length of the gap adjustment plate 3 is equal to the width of the web 12, and the thickness of the gap adjustment plate 3 is at least equal to the distance from the outside of the web 12 to the edge of the wing plate 11. In this embodiment, the gap adjustment plate 3 is relatively thick and slightly protrudes from the edge of the wing plate 11. When installing, the gap adjustment plate 3 needs to be polished and adjusted according to the actual distance between the inner wall of the top plate 21 and the gap adjustment plate 3, so that the pulling and pulling of the telescopic corner column 1 becomes smoother.

[0021] Two gap adjustment plates 3 are correspondingly arranged above each mounting hole 13 and are symmetrical about the central axis of the telescopic corner column 1. The distance between each group of mounting holes 13 and the gap adjustment plates 3 is equal to the distance between the positioning holes 22 and the top plate 21. That is, when the telescopic corner column 1 is relatively fixed to the fixed corner column 2, the distance between the positioning holes 22 and the top plate 21 is equal to the distance between the positioning holes 22 and the top plate 21. Figure 4 and Figure 6 There are exactly two axisymmetric gap adjustment plates 3 located in the inner cavity of the top plate 21. The horizontal height of the two gap adjustment plates 3 is the same as that of the top plate 21, which increases the contact area between the telescopic corner column 1 and the inner cavity wall of the top plate 21, thereby increasing the overall stability of the corner column and reducing the risk of wear. In order to further increase the contact area between the telescopic corner column 1 and the inner cavity wall of the top plate 21 and ensure that when the telescopic corner column 1 is relatively fixed to the fixed corner column 2, the telescopic corner column 1 is in contact with the inner cavity wall of the top plate 21 to the greatest extent, the width of the gap adjustment plate 3 needs to be at least equal to the width of the top plate 21. In this embodiment, the width of the gap adjustment plate 3 is greater than the width of the top plate 21.

[0022] In summary, the utility model partially welds the gap adjustment plate 3 on the outer side of the telescopic corner column 1, and in combination with production operability, the gap adjustment plate 3 is polished separately, which reduces the precision requirement when the telescopic corner column 1 is welded, and at the same time increases the contact area between the telescopic corner column 1 and the inner wall of the top plate 21 of the fixed corner column 2, thereby reducing the risk of the telescopic corner column 1 being worn or rusted during subsequent use, causing the gap between the two to become larger and lose its use purpose; the whole scheme ensures the stability of the gap between the telescopic corner column 1 and the fixed corner column 2, and improves the stability of the height-adjustable folding box.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gap elimination structure for a height-adjustable folding box, the folding box comprising a telescopic corner post (1) and a fixed corner post (2), the telescopic corner post (1) being telescopically arranged inside the fixed corner post (2), the telescopic corner post (1) comprising two wing plates (11) and two web plates (12), the wing plates (11) and the web plates (12) being vertically welded, and the web plates (12) being located inside the edges of the wing plates (11), characterized in that: The gap elimination structure comprises a plurality of gap adjustment plates (3), wherein the gap adjustment plates (3) are evenly distributed along the length direction of the telescopic corner column (1) and at least fill the space from the outside of the web plate (12) to the edge of the wing plate (11); when the telescopic corner column (1) is relatively fixed to the fixed corner column (2), at least the gap adjustment plates (3) exist in the inner cavity of the top plate (21) of the fixed corner column (2).

2. The gap elimination structure according to claim 1, characterized in that: The width of the gap adjustment plate (3) is greater than or equal to the width of the top plate (21).

3. The gap elimination structure according to claim 2, characterized in that: The telescopic corner column (1) is provided with a plurality of mounting holes (13) along the length direction, the mounting holes (13) passing through the two webs (12), the fixed corner column (2) is provided with a positioning hole (22), the positioning hole (22) is located below the top plate (21); the gap adjustment plate (3) is correspondingly arranged above each mounting hole (13), and the distance between each group of mounting holes (13) and the gap adjustment plate (3) is equal to the distance between the positioning hole (22) and the top plate (21).

4. The gap elimination structure according to claim 2, characterized in that: The side surface of the gap adjustment plate (3) is directly fixed to the web (12), the two ends of the gap adjustment plate (3) are respectively fixed to the wing plate (11), and the thickness of the gap adjustment plate (3) is at least equal to the distance from the outer side of the web (12) to the edge of the wing plate (11).

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