Foldable step

Abstract

The utility model relates to the technical field of folding ladders, and provides a foldable step which comprises at least one group of step units, each step unit comprises at least two step plates, and the step plates are gradually stacked in a step shape; a supporting pipe is arranged below the step plate and is connected with the step plate; the rear fixing support is arranged at the rear ends of the multiple step plates, the tail ends of the supporting pipes are hinged to the rear fixing support, supporting connecting rods are hinged to the front ends of the supporting pipes, and the other ends of the supporting connecting rods are hinged to the adjacent supporting pipes; one end of the supporting pipe is lifted up to drive the step plate to rotate around the rear fixing support to be folded and put away. The folding device can be overturned and folded upwards quickly, is simple and quick to operate, and occupies a small space volume.

Description

Technical Field

[0001] The utility model relates to the technical field of folding ladders, in particular to a foldable step. Background Art

[0002] In open spaces such as stadiums or multi-purpose halls, stepped stands are usually set up. Their characteristics are that the number of rows of stands is small and the length is short. The chorus stands in stadiums and stages require a small number of spectators, and it is required to be able to change the required space in a very convenient and timely manner according to on-site needs.

[0003] Conventional quickly convertible stands are either electrically retractable or manually retractable. Electrically retractable stands are more demanding to set up and difficult to deploy in any location. Manually retractable stands also have the following drawbacks: Because the stowed steps are relatively wide, the volume they occupy when pulled out horizontally is limited. Furthermore, they have high requirements for the flatness of the site, the weight-bearing capacity, and the base and surface materials of the site. They also require a high level of manual effort, making it difficult to quickly switch between the stowed and usable states. Therefore, it is necessary to design a folding staircase that can switch between the stowed and usable states more quickly and effortlessly. Utility Model Content

[0004] The purpose of the utility model is to provide a foldable step that can be used more quickly and conveniently and occupies a smaller space volume.

[0005] The utility model is realized through the following technical solutions: a foldable stair, comprising at least one group of step units, wherein the step unit comprises at least two step plates, and the step plates are arranged in a step-like manner; a support tube is provided below the step plate and connected to it; a rear fixed bracket is provided at the rear end of the plurality of step plates, and the tail end of the support tube is hinged to the rear fixed bracket, the front end of the support tube is hinged with a support connecting rod, and the other end of the support connecting rod is hinged to the adjacent support tube; lifting one end of the support tube drives the step plate to rotate around the rear fixed bracket and fold and stow.

[0006] Furthermore, it also includes a bottom tube and a writing base plate, one end of the bottom tube is hinged to the rear fixed bracket; a connecting tube is hinged between the bottom tube and the adjacent support tube; when the step unit is folded, the writing base plate is rotated to stand up; when the step unit is unfolded, the writing base plate is rotated to be horizontal.

[0007] Furthermore, it also includes a side baffle, which is installed on the supporting connecting rod and is arranged between two adjacent step plates.

[0008] Furthermore, the supporting link is a U-shaped structure, and when the step unit is folded, the supporting link is flush with the bottom of the step plate.

[0009] Furthermore, there are two connecting pipes, one of which is hinged to the middle of the supporting pipe and the bottom pipe respectively, and the other connecting pipe is hinged to the front end of the supporting pipe and the bottom pipe.

[0010] Furthermore, it also includes a storage body, the back side of the rear fixing bracket is connected to the storage body, and the ladder unit is flipped and folded toward one side of the storage body.

[0011] Furthermore, the storage body is a groove-shaped structure.

[0012] Furthermore, the support tube and the support connecting rod are made of square hollow tubes.

[0013] The technical solution of the utility model has at least the following advantages and beneficial effects:

[0014] 1. The mechanical four-bar structure is formed by the support tube, support link and rear fixed bracket, which makes it quick and easy to flip upward and fold, and it is firm and reliable;

[0015] 2. After folding, the overall volume is smaller, and the writing base can be flipped to the upright state and used for writing teaching, with more diverse functions;

[0016] 3. The use environment is not restricted and can be installed in any open space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of the foldable steps provided in an embodiment of the present utility model when unfolded;

[0019] Figure 2 It is a structural diagram of the ladder unit in the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the foldable step in the present invention being stored in the storage body;

[0021] Figure 4 This is a diagram of the foldable step in the present invention in a flipped and folded state;

[0022] Figure 5 This is a schematic diagram of the back structure of the foldable steps;

[0023] Figure 6 It is a side view of the foldable steps in the present invention.

[0024] Icon: 1-step unit, 11-step plate, 12-support tube, 13-support connecting rod, 14-rear fixed bracket, 15-bottom tube, 16-connecting tube, 17-writing base plate, 18-side baffle, 2-storage body. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] The following is further described in conjunction with specific embodiments. Figures 1-6As shown, this embodiment is a foldable staircase, comprising at least one set of step units 1, the step unit 1 comprising at least two step plates 11, and the step plates 11 are gradually stacked in a step-like manner; a support tube 12 is provided below the step plate 11 and connected to it; a rear fixed bracket 14 is provided at the rear end of the plurality of step plates 11, and the tail end of the support tube 12 is hinged to the rear fixed bracket 14, the front end of the support tube 12 is hinged to a support link 13, and the other end of the support link 13 is hinged to the adjacent support tube 12; one end of the support tube 12 is lifted up to drive the step plate 11 around the rear fixed bracket The bracket 14 is rotated and folded and stowed; specifically, the utility model lifts one end of the support tube 12 at the lowest end, so that the entire step is rotated and flipped around the rear fixed bracket 14, and the support tube 12, the rear fixed bracket 14, and the support connecting rod 13 form a four-bar structure. The step plate 11 and the support tube 12 are gradually flipped from a horizontal position to an upward position, and the support connecting rod 13 is also flipped synchronously, and the overall volume of the step unit 1 is gradually folded and reduced; conversely, when it needs to be unfolded, the flip support tube 12 is pulled down to a horizontal position, and the step plate 11 stops at a horizontal position. The operation is simple, labor-saving and fast.

[0029] It is worth mentioning that in order to prevent the flip stand steps from accidentally flipping forward due to uncertain factors, locking limit pins are installed on both sides when folding and stowing. This process can be completed by two people together.

[0030] like Figure 2 and Figure 4 As shown, this embodiment further includes a bottom tube 15 and a writing base 17, one end of the bottom tube 15 is hinged to the rear fixed bracket 14; a connecting tube 16 is hinged between the bottom tube 15 and the adjacent support tube 12; when the step unit 1 is folded, the writing base 17 is rotated to stand up; when the step unit 1 is unfolded, the writing base 17 is rotated to be horizontal; specifically, when unfolded, the writing base 17 and the bottom tube 15 are flipped to contact the ground for support, and support seats can be installed at the four corners of the writing base 17. When the writing base 17 is flipped, folded and lifted, writing can be displayed and used for teaching on the writing base 17, and the functions are more diverse.

[0031] like Figure 2 As shown, this embodiment also includes a side baffle 18, which is installed on the supporting link 13 to appropriately wrap and shield the frame. The ladder unit 1 appears more beautiful and has better safety, preventing items from falling in the gap between the two step plates 11, and the side baffle 18 is arranged between two adjacent step plates 11.

[0032] like Figure 3 As shown, the supporting link 13 is a U-shaped structure. When the ladder unit 1 is folded, the supporting link 13 is flush with the bottom of the step plate 11, which can limit the turning of the step plate 11 and avoid excessive turning.

[0033] In order to improve the stability and smoothness of the connection, two connecting pipes 16 are provided. One connecting pipe 16 is hinged to the middle of the support pipe 12 and the bottom pipe 15 respectively, and the other connecting pipe 16 is hinged to the front end of the support pipe 12 and the bottom pipe 15, so that the connection point effect is more uniform.

[0034] More preferably, this embodiment also includes a storage body 2, which can be a site wall, and the rear fixed bracket 14 can be placed so that the back side of the rear fixed bracket 14 is connected to the storage body 2, and the step unit 1 is flipped and folded toward one side of the storage body 2 to wrap its back side.

[0035] like Figure 1 As shown, the storage body 2 in this embodiment is a groove-shaped structure; specifically, several step units 1 are spliced ​​side by side and clamped in the storage body 2. When the step unit 1 is folded and retracted, the writing base plate 17 and the bottom tube 15 at the bottom are flipped to a position flush with the two ends of the storage body 2. The writing base plate 17 is in a vertical state, the overall aesthetics is better, and the space occupied is smaller.

[0036] In order to reduce the overall weight and ease the difficulty of flipping and folding, the support tube 12 and the support connecting rod 13 used in this embodiment are made of square hollow tubes.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A foldable staircase, characterized by: It comprises at least one group of step units (1), wherein the step units (1) comprise at least two step plates (11), and the step plates (11) are arranged in a step-by-step stacked manner; A support pipe (12) is provided below the step plate (11) and connected thereto; A rear fixed bracket (14) is provided at the rear ends of the plurality of step plates (11), and the tail end of the support tube (12) is hinged to the rear fixed bracket (14), the front end of the support tube (12) is hinged to a support link (13), and the other end of the support link (13) is hinged to an adjacent support tube (12); One end of the support tube (12) is lifted to drive the step plate (11) to rotate around the rear fixed bracket (14) and fold up.

2. The foldable stair according to claim 1, characterized in that: It also includes a bottom tube (15) and a writing base (17), one end of the bottom tube (15) is hinged to the rear fixed bracket (14); A connecting pipe (16) is hingedly connected between the bottom pipe (15) and the adjacent support pipe (12); When the step unit (1) is folded, the writing base plate (17) is turned to stand up; When the step unit (1) is unfolded, the writing base (17) is turned to be horizontal.

3. The foldable stair according to claim 1, characterized in that: It also includes a side baffle (18), which is installed on the supporting connecting rod (13) and is arranged between two adjacent step plates (11).

4. The foldable stair according to claim 1, characterized in that: The supporting connecting rod (13) is a U-shaped structure. When the ladder unit (1) is folded, the supporting connecting rod (13) is flush with the bottom of the step plate (11).

5. The foldable stair according to claim 2, characterized in that: There are two connecting pipes (16), one of which is hinged to the middle of the support pipe (12) and the bottom pipe (15), and the other connecting pipe (16) is hinged to the front ends of the support pipe (12) and the bottom pipe (15).

6. The foldable stair according to claim 1, characterized in that: It also includes a storage body (2), the back side of the rear fixing bracket (14) is connected to the storage body (2), and the ladder unit (1) is turned over and folded toward one side of the storage body (2) to be stored.

7. The foldable stair according to claim 6, characterized in that: The storage body (2) is a groove-shaped structure.

8. The foldable stair according to claim 1, characterized in that: The support tube (12) and the support connecting rod (13) are made of square hollow tubes.

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