Step stabilization mechanism and step

Abstract

To provide a footstool capable of keeping its stable state even if a force acts thereon in an oblique direction or a rotating direction when a worker goes up and down.SOLUTION: A footstool stabilizing mechanism 10a of the present invention, which can be mounted on a footstool 20a having a top plate 21 and a base 22, includes a mounting part 12 which can be mounted on the base 22 of the footstool 20a and a flat board 11 which can be projected from the base 22 to an outside floor surface when viewed from above. Alternatively, a footstool 20a has a top plate 21, a base 22, and a stabilizing mechanism 10a, in which the stabilizing mechanism 10a includes a mounting part 12 which can be mounted on the base 22 and a flat board 11 which can be extended from the base 22 toward an outside floor surface.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a platform stabilization mechanism and a platform, and can be particularly suitably used for platforms used at construction sites and the like.

Background Art

[0002] In many operations including construction sites, various platforms are used.

[0003] Patent Document 1 discloses an invention of a work platform whose height can be easily changed. It has a structure in which the top plate is supported by two upper and lower platforms. By stacking the upper platform and the lower platform vertically, it can be made high, and by combining the upper platform and the lower platform, it can be made low. The upper platform and the lower platform can move vertically and rotate within a horizontal plane around a central axis, and by rotating 90°, it is possible to switch between a state of being stacked vertically and high and a state of being combined and low.

[0004] Patent Document 2 also discloses an invention of a work platform whose height can be easily changed. It points out the problem that the platform is unstable when the operator stands on the peripheral part of the top plate, and discloses an invention in which an indicator indicating to stand on the central part is provided (paragraphs 0004 to 0006).

[0005] Patent Document 3 shows a platform having an upper and lower two-step staircase-shaped top plate. In order to improve stability, an invention is disclosed in which two safety stoppers protruding from the floor surface in a direction away from the lower top plate are attached to two legs of the high top plate that are far from the lower top plate. The safety stoppers are configured to be able to be stored along the support of the legs.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] As a result of the inventor's examination of Patent Documents 1, 2, and 3, it was found that there are new problems as follows. Specifically, it was found that the conventional technology does not take into account the movements of the worker and is not sufficiently stable.

[0008] According to the step-shaped step stool described in Patent Document 3, the worker steps on the lower platform and then climbs onto the higher platform, so the worker usually moves in the direction in which the lower and higher platforms are arranged. If the worker were to step directly onto the higher platform from any other direction, it is likely that the worker would pay sufficient attention to stability. On the other hand, in step stools whose height can be changed, such as those in Patent Documents 1 and 2, the direction in which the worker climbs cannot be determined because they are not step-shaped. The step stool disclosed in Patent Document 2 has an indicator that instructs the worker to step on the center of the work surface (platform) because stepping on the periphery of the work surface (platform) would be unstable.

[0009] However, the inventors of this invention realized that while this may function once the worker is already on the work surface (top plate), it completely fails to consider the instability induced by the movement of stepping from the floor onto the work surface (top plate). When the worker is on the top plate, the worker's weight is applied vertically, so the step stool is stable if the worker stands in the center of the stool, i.e., directly above the center of gravity. However, when stepping onto the stool, the worker's weight moves from a diagonal downward direction to the top surface, so a force acts that crosses the step stool diagonally, away from the center of gravity, or a rotational force around the center of gravity.

[0010] Based on this analysis, the inventors of the present invention have identified a novel problem: maintaining the stability of the step platform against diagonal or rotational forces applied when a worker ascends or descends.

[0011] The objective of the present invention is to provide a step stool that is stable even against diagonal or rotational forces applied when a worker moves up or down.

[0012] The means for solving these problems are described below, but other problems and novel features will become apparent from the description and accompanying drawings in this specification. [Means for solving the problem]

[0013] The step stool stabilization mechanism of the present invention can be attached to a step stool having a top plate and a base, and includes a mounting part that can be attached to the base of the step stool, and a flat plate that can extend outwards from the base to the floor surface when viewed from above.

[0014] The step stool of the present invention comprises a top plate, a base, and a stabilization mechanism, the stabilization mechanism comprising a mounting part that can be attached to the base and a flat plate that can extend from the base to the floor surface outside. [Effects of the Invention]

[0015] The effects obtained by the present invention can be briefly explained as follows.

[0016] In other words, it can provide a stable step stool even against diagonal or rotational forces applied when a worker moves up or down. [Brief explanation of the drawing]

[0017] [Figure 1] Figure 1 is a perspective view showing an example of the configuration of the step stabilization mechanism of the present invention. [Figure 2] Figure 2 is a perspective view showing an example of the configuration of the step stabilization mechanism of the present invention. [Figure 3] Figure 3 is a perspective view showing an example of the configuration of the step stabilization mechanism of the present invention. [Figure 4] Figure 4 is a perspective view showing an example of the configuration of the step stabilization mechanism of the present invention. [Figure 5] Figure 5 is a perspective view showing an example of the configuration of the step stabilization mechanism of the present invention. [Figure 6] FIG. 6 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 7] FIG. 7 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 8] FIG. 8 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 9] FIG. 9 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 10] FIG. 10 is a plan view showing the bottom surface of the step 20d. [Figure 11] FIG. 11 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 12] FIG. 12 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 13] FIG. 13 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 14] FIG. 14 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 15] FIG. 15 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 16] FIG. 16 is a perspective view showing the structure of the mounting portion of the step stabilizing mechanism of the present invention. [Figure 17] FIG. 17 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 18] FIG. 18 is a plan view and an enlarged view showing Configuration Example 10j of the step stabilizing mechanism of the present invention. [Figure 19] FIG. 19 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 20] FIG. 20 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention. [Figure 21] FIG. 21 is a perspective view showing a configuration example of the step stabilizing mechanism of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] 1. Outline of the Embodiment First, a general overview of the representative embodiments disclosed in this application will be provided. The reference numerals in parentheses in the drawings used to refer to the representative embodiments are merely illustrative examples of components included in the concept of the elements to which they are attached.

[0019] [1] Step stool stabilization mechanism (Figures 1 to 5, etc.) The step stool stabilization mechanism of the present invention is a step stool stabilization mechanism (10a, 10b, 10c, 10d, 10e) that can be attached to a step stool (20a, 20b) having a top plate (21) and a base (22), and comprises a mounting part (12) that can be attached to the base (22) and a flat plate (11) that can extend outwards from the base (22) to the floor surface when viewed from above.

[0020] This makes it possible to provide a stable step stool even against diagonal or rotational forces applied when a worker ascends or descends.

[0021] [2] Installation using a snap-in method (Figures 1 to 3, etc.) In the step stabilization mechanism (10a, 10b, 10c) of item [1], the mounting portion (12) is integrally formed with the flat plate (11) and is fixed horizontally by being fitted into a recess (not shown) on the bottom surface of the platform.

[0022] This makes it easy to attach and detach the step stool stabilization mechanism. For example, by designing the mounting part to slide vertically into a recess in the platform, the step stool can be fixed in place by its own weight pressing the platform down to the floor surface by sliding the mounting part, which is integrated with the flat plate, into the recess in the platform, and thus it can be used as a stabilization mechanism. At the same time, the stabilization mechanism can be removed simply by lifting the step stool. It should be noted that "fixed horizontally" here does not mean that even slight horizontal deviations are not tolerated, but rather that the step stool is fixed with a degree of play that does not hinder stability when stepping up or down.

[0023] Here, the "recess on the bottom surface" refers to a recess that can stably engage with the upper mounting portion (12), and includes, for example, a rectangular cylindrical space or gap surrounded by multiple side plates (221). In other words, the "recess on the bottom surface" is not limited by its width or depth.

[0024] [3] Installation by suspension from the top panel (Figures 4 and 19) In the step stabilization mechanism (10d, 10k) of item (1), the mounting portion comprises a member (17) that fits into a recess (24) provided on the top plate, and a member (12) that extends along the outer wall (221) of the platform to the bottom and fixes the flat plate (11) so as to contact a floor surface at approximately the same height as the bottom surface of the platform.

[0025] This allows the stabilization mechanism to be attached after the step stool is in place, and makes it easy to attach and detach the step stool stabilization mechanism. In addition, the flat plate of the stabilization mechanism can be designed to be at the same height as the bottom surface of the step stool.

[0026] [4] Mounting part connected to the connecting part of a step stool that can be connected horizontally (Figures 5 and 20) In the step stabilization mechanism (10e) of item (1), the step has connecting parts (26, 27) for connecting each other in the horizontal direction, and the mounting parts (12, 15) are configured to be connectable to the connecting parts, and the flat plate is fixed so as to be in contact with a floor surface at approximately the same height as the bottom surface of the step.

[0027] This allows the stabilization mechanism to be attached after the step stool is in place, and makes it easy to attach and detach the step stool stabilization mechanism. In addition, the flat plate of the stabilization mechanism can be designed to be at the same height as the bottom surface of the step stool.

[0028] [5] The flat plate is the same width as the step stool (Figures 1, 2, 6-7, 9-12) In the step stabilization mechanism of any one of items (1) to (4), the platform is rectangular when viewed from above, and the width of the flat plate is approximately the same as the width of the side attached to the platform.

[0029] This ensures that the step stool, equipped with a stabilization mechanism, remains stable even when workers ascend or descend from various angles.

[0030] [6] The width of the flat plate is wider than that of the step stool (Figures 3, 4, 8, 13, 14) In the step stabilization mechanism of any one of items (1) to (4), the platform is rectangular when viewed from above, and the width of the flat plate is wider than the side attached to the platform.

[0031] This allows the step stool equipped with the stabilization mechanism to be stabilized even when workers ascend or descend from a wider angle.

[0032] [7] Anchor holes in the flat plate (Figures 1 to 21) In the step stabilization mechanism (10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j, 10k, 10m) of any one of items [1] to [6], the flat plate is provided with a hole (19) that penetrates the floor surface.

[0033] As a result, the step stool stabilization mechanism can fix the flat plate to the floor surface with anchors, making the entire step stool more stable. Conventional step stools do not have a mechanism to fix to the floor surface, and it is not easy to provide such a mechanism, but the stabilization mechanism of the present invention has a flat plate that extends outwards from the floor surface, so the entire step stool can be fixed to the floor simply by providing through holes in the flat plate.

[0034] [8] Step stool equipped with a stabilization mechanism (Figures 1-3, 15-18) The step stool of the present invention is a step stool (20a, 20b) having a top plate (21), a base (22), and a stabilization mechanism (10a, 10b, 10c, 10i, 10j), wherein the stabilization mechanism comprises a mounting part (12) that can be attached to the base and flat plates (11, 16) that can extend outward from the base to the floor surface.

[0035] This makes it possible to provide a stable step stool even against diagonal or rotational forces applied when a worker ascends or descends.

[0036] [9] Installation using a snap-in method (Figures 1-3) In the step stool of item [8], the mounting portion is integrally formed with the flat plate and is fixed horizontally by being fitted into a recess (not shown) on the bottom surface of the platform.

[0037] This makes it possible to easily attach and detach the step stabilization mechanism, similar to the step stabilization mechanism described in item [1].

[0038]

[10] Installation using a sliding method (Figures 15, 16, and 21) In the step stool of item [8], the mounting portion is fixed to the base and supports the flat plate (16) so that it can slide horizontally, and the flat plate is configured such that by sliding it, it can be changed between a state in which it extends outward from the mounting portion to the base and a state in which it is housed in the mounting portion.

[0039] This integrates the stabilization mechanism with the step stool, making it easier to handle, such as transporting and setting up the step stool. When stabilization is needed, the flat plate can be slid out to contribute to stability, and when stabilization is not needed, it can be stored in the mounting section inside the step stool.

[0040] Furthermore, the sliding mounting method described in item

[10] may be configured such that the mounting part is integrated with the base, or the mounting part can be attached to and detached from the base.

[0041]

[11] Rotary mounting (Figures 17 and 18) In the step stool of item [8], the mounting portion supports the flat plate (11) so that it can rotate in a horizontal plane at the bottom of the platform, and the flat plate is configured such that by the rotation it can change between a state in which it is extended outward from the mounting portion to the outside of the platform and a state in which it is stored under the bottom of the platform.

[0042] This integrates the stabilization mechanism with the step stool, making it easier to handle, such as transporting and setting up the step stool. When stabilization is needed, the flat plate can be extended by rotating, contributing to stability, and when stabilization is not needed, it can be stored inside the bottom of the step stool.

[0043] Furthermore, the rotary mounting described in item

[11] may be configured such that the mounting part is integrated with the base, or the mounting part can be attached to and detached from the base.

[0044]

[12] The flat plate is the same width as the step stool (Figures 1, 2, 6-7, 9-12) In any of the step stools described in items [8] through

[11] , the platform is rectangular when viewed from above, and the width of the flat plate is approximately the same as the width of the side attached to the platform.

[0045] This ensures that the step stool equipped with the stabilization mechanism remains stable even when a worker ascends or descends from various angles.

[0046]

[13] The width of the flat plate is wider than that of the step stool (Figure 3) In the step stool of item [8], [9], or

[11] , the platform is rectangular when viewed from above, and the width of the flat plate is wider than the side attached to the platform.

[0047] This allows the step stool equipped with the stabilization mechanism to be stabilized even when the worker is ascending or descending from a wider angle.

[0048]

[14] Anchor holes in the flat plate (Figures 1 to 21) In any one of the step stools (10a to 10m) from item [8] to

[13] , the flat plate is provided with a hole (19) that penetrates the floor surface.

[0049] As a result, the step stool stabilization mechanism allows the flat plate to be fixed to the floor surface by anchors, making the entire step stool more stable. Conventional step stools do not have a mechanism to fix to the floor surface, and it is not easy to provide such a mechanism, but the stabilization mechanism of the present invention has a flat plate that extends outwards from the floor surface, so the entire step stool can be fixed to the floor simply by providing through holes in the flat plate.

[0050] 2. Details of the Embodiment The embodiments will be described in more detail.

[0051] Figure 1 is a perspective view showing an example of the configuration of the step stool stabilization mechanism 10a of this embodiment. The step stool 20a consists of a top plate 21 and a base 22. The top plate 21 is formed in a rectangular shape such as a square in plan view, and has numerous indentations (not shown) on its upper surface for anti-slip purposes and drainage holes 24 that penetrate vertically. It is attached to the upper part of the base 22 to form the top plate surface of the step stool 20a. The base 22 is formed in a rectangular cylindrical shape that is roughly the same rectangle as the top plate 21 in plan view from above. The base 22 consists of four side plates 221. The side plates 221 are notched in a trapezoidal shape at the position that contacts the floor surface, as shown in Figure 1, forming a gap 25 and a leg portion 23. The top plate 21 and the base 22 are molded from synthetic resin, but may also be made of metal or wood. The top plate 21 and the base 22 are fixed to each other by a joining mechanism (not shown), and together they form the step stool 20a.

[0052] The step stool stabilization mechanism 10a consists of a flat plate 11 and a plurality of mounting parts 12. The flat plate 11 has a roughly T-shape and consists of a portion that is narrower than the width of the gap 25 so as to be located below the gap 25 of the base 22, and a portion that, when viewed from above, extends outward from the base 22 to the floor surface. In this embodiment, the portion that extends outward to the floor surface is configured to be approximately the same width as the side plate 221 of the base 22, but it may be narrower or wider. If it is configured to be narrow, the flat plate becomes more compact, but the diagonal stability of the base 22 relative to the side plate 221 is slightly reduced. If it is configured to be wider, the flat plate becomes larger, but the diagonal stability of the base 22 relative to the side plate 221 is increased. The mounting parts 12 are configured so that the flat plate 11 can be fixed to the bottom surface of the base 22. For example, the mounting portion 12 is formed vertically upward from the flat plate 11 and is configured to face each other so as to be located on the inside and outside of the side plate 221 of the step stool 20a when installed on the step stool 20a. The distance between the inside and outside of the mounting portion 12 should be approximately the same as the thickness of the side plate 221, or set to be a few millimeters wider. Alternatively, instead of being on the outside of the side plate 221, the mounting portion 12 may be made on the inside, and multiple portions may be made at different distances from the side plate 221. The flat plate 11 may have anchor holes 19 formed through it so that it can be fixed to the ground with pegs or bolts. The flat plate 11 and the multiple mounting portions 12 may be made of metal and may be formed integrally, or they may be formed separately and joined together with bolts. In addition, grooves for slip prevention may be formed on the surface of the flat plate 11 that is installed on the floor, or a slip prevention sheet may be attached.

[0053] Figure 1a shows the state before the step stool stabilization mechanism 10a is installed on the step stool 20a. The step stool stabilization mechanism 10a is installed on the floor surface. The step stool 20a is moved from top to bottom so that the side plate 221 is positioned between the mounting parts 12. While sliding the side plate 221 between the inner mounting part 12 and the outer mounting part 12, it is moved until the legs 23 of the base 22 are placed on the floor surface. Figure 1b shows the state after installation. In this state, the side plate 221 of the base 22 is held in place by the mounting parts 12, and the mounting parts 12 support the side plate 221 and can support the diagonal or rotational movement of the side plate 221. When fixing the step stool stabilization mechanism 10a to the floor surface, it is fixed by pegs or bolts through the anchor holes 19.

[0054] The step stool stabilization mechanism 10a of this embodiment provides a stable step stool even against diagonal or rotational forces applied when a worker steps up or down. Even when a worker steps up or down on the step stool 20a, or when they place their feet on the periphery of the top plate 21 during work, the step stool stabilization mechanism 10a can support the diagonal or rotational movement of the side plate 221, thereby stabilizing the step stool. Furthermore, the step stool stabilization mechanism 10a can be easily attached and detached simply by sliding the step stool 20a.

[0055] The above explanation assumes that the base 22 has a simple structure with side plates 221 forming its four sides. However, if the bottom of the base 22 has complex irregularities, the mounting portion 12 can be appropriately modified so that it fits into the recesses. Also, the above (Figure 1) shows an example configuration in which the mounting portion 12 is also provided on the outside of the side plate 221. However, if the fitting between the mounting portion 12 and the recesses is sufficient, the mounting portion 12 on the outside of the side plate 221 is unnecessary. This also applies to other configuration examples that will be explained by referring to other figures.

[0056] Figure 2 is a perspective view showing an example configuration of a step stool stabilization mechanism 10b in another embodiment. The flat plate 11 has a roughly I-shape, with its longitudinal direction (left-right direction in the drawing) being longer than the length of one side of the base 22, and its width perpendicular to the longitudinal direction being approximately the same as the width of the base 22. The width of the flat plate 11 perpendicular to the longitudinal direction has a section that is narrower than the width of the gap 25 in the base 22, and this narrow section is formed to extend longer than the width of the base 22. As a result, when the flat plate 11 is installed under the base 22, it penetrates the gap 25 between the opposing side plates 221 of the base 22 and the floor surface, and is installed in a manner that protrudes from both sides of the opposing side plates 221. A mounting portion 12 is formed on the flat plate 11 in an upward vertical direction from the flat plate 11, and is formed at a position that contacts the inside of the opposing side plates 221 of the step stool 20a when installed on the step stool 20a. In other words, the distance between the outer surfaces of the mounting parts 12, which are formed facing each other in the longitudinal direction, is the same as the distance between the inner surfaces of the opposing side plates 221 of the base 22. The flat plate 11 and the multiple mounting parts 12 are made of metal and may be formed integrally, or they may be formed separately and joined together with bolts. The flat plate 11 may have anchor holes 19 that penetrate through it so that it can be fixed to the ground with pegs or bolts. In addition, grooves may be formed on the surface of the flat plate 11 that is installed on the floor surface to prevent slipping, or a non-slip sheet may be attached.

[0057] Figure 2a shows the state before the step stool stabilization mechanism 10b is installed on the step stool 20a. The step stool stabilization mechanism 10b is installed on the floor surface. The step stool 20a is moved from top to bottom so that the side plates 221 are positioned between the mounting parts 12. The step stool 20a is moved while sliding with the inner surfaces of the opposing side plates 221 in contact with the mounting parts 12, that is, with the inner surfaces of the opposing side plates 221 sandwiching the mounting parts 12, until the legs 23 of the base 22 are placed on the floor surface. Figure 2b shows the state after installation. If the step stool stabilization mechanism 10b is to be fixed to the floor surface, it may be configured to be fixed by pegs or bolts through anchor holes 19. In this state, the inner surfaces of the side plates 221 of the base 22 are in contact with the mounting parts 12, and the mounting parts 12 support the side plates 221 and can support the diagonal or rotational movement of the side plates 221. In particular, even if a worker places their foot on the left-right edge of the base 22 in the left-right direction of Figure 2, the mounting portion 12 supports the inner surface of the side plate 221, preventing it from tilting in either the left-right direction of Figure 2.

[0058] Figure 3 is a perspective view showing an example configuration of a step stool stabilization mechanism 10c in another embodiment. The flat plate 11 is approximately square in shape, and the length of each side of the flat plate 11 is longer than the length of one side of the base 22. Two rectangular through grooves 13 are formed in the flat plate 11. The through grooves 13 are formed so that when the step stool 20a is positioned on the flat plate 11, the legs 23 of the step stool 20a pass through the through grooves 13 and are placed on the floor surface. In this embodiment, two rectangular through grooves 13 are formed to cover the two legs 23 of the step stool 20a. The through grooves 13 are not limited to this form; four square through grooves 13 may be formed corresponding to one leg 23. The mounting portion 12 is formed vertically upward from the flat plate 11 and, when installed on the step stool 20a, is formed in an approximately L-shape at positions corresponding to the four inner corners of the side plates 221 of the step stool 20a. The right-angled L-shaped tip of the mounting portion 12 is close to the corner formed on the inside of the side plate 221, and the outer surface of the mounting portion 12 is formed to be in contact with the inner surface of the side plate 221. In other words, when viewed from above in plan, the rectangle formed by the outer surfaces of the four L-shaped mounting portions 12 is approximately the same as or slightly smaller than the rectangle formed on the inner surface of the side plate 221. The flat plate 11 and the multiple mounting portions 12 are made of metal and may be formed as a single unit, or they may be formed separately and joined together by bolts. The flat plate 11 may have anchor holes 19 that penetrate it so that it can be fixed to the ground with pegs or bolts. In addition, grooves for anti-slip purposes can be formed on the surface of the flat plate 11 that is installed on the floor, or anti-slip sheets can be attached.

[0059] Figure 3a shows the state before the step stool stabilization mechanism 10c is installed on the step stool 20a. The step stool stabilization mechanism 10c is installed on the floor surface. The step stool 20a is moved from top to bottom so that the side plates 221 are positioned between the mounting parts 12. While sliding the step stool 20a with the L-shaped outer plane of the mounting part 12 and the inner surface of the side plates 221 of the base 22 in close proximity, it is moved until the legs 23 of the base 22 are placed on the floor surface. Figure 3b shows the state after installation. In this state, the side plates 221 of the base 22 surround the outer surface of the mounting part 12, and the mounting part 12 supports the side plates 221 and can support the diagonal or rotational movement of the side plates 221. When fixing the step stool stabilization mechanism 10c to the floor surface, it can be fixed by pegs or bolts through the anchor holes 19.

[0060] The step stool stabilization mechanism 10c of this embodiment provides a stable step stool even against diagonal or rotational forces applied when a worker ascends or descends. Because the width of the step stool stabilization mechanism 10c is wider than that of the step stool 20a, and the flat plates 11 extend outward in all four directions of the side plates 221, the mounting part 12 can support the diagonal or rotational movement of the side plates 221 regardless of which direction the worker places their feet on the periphery of the top plate 21 when ascending or descending to the step stool 20a or during work, thereby stabilizing the step stool. Furthermore, the step stool stabilization mechanism 10a can be easily attached and detached simply by sliding the step stool 20a.

[0061] Figure 4 is a perspective view showing an example configuration of a step stool stabilization mechanism 10d in another embodiment. The flat plate 11 has a roughly rectangular shape, with its longer side wider than the width of the side plate 221. The mounting portion 12 is formed vertically upward from the flat plate 11, bends 90 degrees on the upper surface of the top plate 21 of the base 22, and has a horizontal surface that covers the drainage holes 24 of the top plate 21. The step stool 20a in this embodiment has four drainage holes 24, and two mounting portions 12 are formed on the flat plate 11 so as to cover two of them. A rod-shaped member (not shown) is formed vertically downward at a position corresponding to the drainage holes 24 on the horizontal surface of the mounting portion 12. The rod-shaped member fits into the drainage holes 24, and the mounting portion 12 and the step stool 20a are fixed vertically to each other, aligned horizontally with the floor surface. The flat plate 11 may have anchor holes 19 that penetrate it so that it can be fixed to the ground with pegs or bolts. The flat plate 11 and the multiple mounting parts 12 may be made of metal and may be formed integrally, or they may be formed separately and joined together by bolts. In addition, grooves for anti-slip purposes may be formed on the surface of the flat plate 11 that is installed on the floor, or an anti-slip sheet may be attached.

[0062] During installation, the step stabilization mechanism 10d is brought close to the step stool 20a, which is installed on the floor, from above, and the rod-shaped member is inserted into the drainage hole 24. From this position, the mounting part 12 is slid vertically until the lower part of the flat plate 11 contacts the floor surface, with the vertical plane of the mounting part 12 and the side plate 221 in close proximity. Figure 4 shows the state after installation, in which the step stool 20a is supported by the mounting part 12 at the side plate 221, the rod-shaped member is fitted into the drainage hole 24, and the step stabilization mechanism 10d and the step stool 20a are fixed to each other horizontally with respect to the floor surface.

[0063] The step stool stabilization mechanism 10d of this embodiment allows the stabilization mechanism to be attached after the step stool has been set up, and the step stool stabilization mechanism can be easily attached and detached. In addition, the flat plate of the stabilization mechanism can be designed to be at the same height as the bottom surface of the step stool.

[0064] Although the holes formed in the top plate 21 have been described as "drainage holes 24," their purpose and structure are not limited to drainage. Any structure is acceptable as long as the mounting part 12 is fitted into the top plate 21. For example, the legs 23 could be cylindrical, and the holes could be designed to fit with the cylindrical legs 23 when stacking the step stools 20a vertically.

[0065] Figure 5 is a perspective view showing an example configuration of a step stool stabilization mechanism 10e in another embodiment. The step stool 20b has the same shape as the step stool 20a, but differs in that it has connecting parts 26 and connecting receiving parts 27. The connecting parts 26 are shaped to fit into the connecting receiving parts 27, and the step stools 20b can be expanded by engaging the connecting parts 26 and connecting receiving parts 27 of adjacent step stools 20b. The step stool stabilization mechanism 10e consists of a mounting part 12 and a flat plate 11, with the mounting part 12 formed vertically upward from the flat plate 11. As shown in Figure 5b, when the step stool stabilization mechanism 10e is installed on the step stool 20b, a joint part 15 with the same shape as the connecting part 26 of the step stool 20b is formed on the surface of the mounting part 12 that contacts the step stool 20b. The joint part 15 can lock into the connecting receiving parts 27 of the step stool 20b. This connects and fixes the step stabilization mechanism 10e to the step stabilization mechanism 20b. The flat plate 11 and the multiple mounting parts 12 are made of metal and may be formed as a single unit or may be formed separately and joined together with bolts. In addition, grooves for slip prevention may be formed on the surface of the flat plate 11 that is in contact with the floor, or a slip prevention sheet may be attached.

[0066] Figure 5a shows the state before the step stool stabilization mechanism 10e is installed on the step stool 20b. The step stool stabilization mechanism 10e is brought close to the step stool 20b, which is installed on the floor, from above, and the step stool stabilization mechanism 10e is moved downwards while sliding it with the plane on which the joint portion 15 of the connecting portion 12 is formed in contact with the side plate 221 of the step stool 20b. In this state, the joint portion 15 and the connecting receiving portion 27 are fitted together, and the step stool stabilization mechanism 10e is slid further downwards until the lower surface of the flat plate 11 contacts the floor. Figure 5b shows the state after installation, in which the side plate 221 of the step stool 20a is supported by the mounting portion 12, and the step stool stabilization mechanism 10e and the step stool 20a are fixed to each other horizontally with respect to the floor. When fixing the step stool stabilization mechanism 10e to the floor, it can be fixed by pegs or bolts through the anchor holes 19.

[0067] The step stool stabilization mechanism 10e of this embodiment integrates the stabilization mechanism and the step stool, making it easier to handle, such as transporting and setting up the step stool. When stabilization is needed, the flat plate slides out to contribute to stabilization, and when stabilization is not needed, it can be stored in the mounting part inside the step stool.

[0068] In this embodiment, we have shown an example where the step stabilization mechanism 10e is installed on one step stool 20b. However, when multiple step stools 20b are connected together, the step stabilization mechanism 10e can be connected to the end of the outermost step stool 20b. This further increases the stability of the scaffolding when step stools 20b are connected and extended.

[0069] Figure 6 is a diagram showing an example of the step stool stabilization mechanism 10a being installed on a step stool 20c. Like the step stool 20a, the step stool 20c consists of a top plate 21 and a base 22, and the base 22 consists of side plates 221, legs 23 and gaps 25. The difference from the step stool 20a is that the side plates 221 are foldable and can be folded compactly when not in use. In Figure 6, the side plates 221 are unfolded, showing the state in use. At this time, the base 22 has a rectangular cylindrical structure composed of the four unfolded side plates 221. The step stool stabilization mechanism 10a is installed in the same way as when it was installed on the step stool 20a, by moving the step stool 20c downwards from above relative to the step stool stabilization mechanism 10a installed on the floor, and fixing it in a position where the side plates 221 are clamped by the mounting part 12 of the step stool stabilization mechanism 10a. As a result, the side plate 221 is supported by the mounting portion 12, providing a stable step stool even against diagonal or rotational forces applied when a worker moves up or down.

[0070] Figure 7 is a configuration diagram showing an example of the step stool stabilization mechanism 10b being installed on the step stool 20c. As already explained, the step stool stabilization mechanism 10b supports the side plate 221 of the step stool 20a from the inside in four directions by the mounting part 12. Similarly, in this embodiment, the mounting part 12 supports the side plate 221 in its extended state from the inside of the step stool 20c. This provides a step stool that is supported by the mounting part 12 and is stable against diagonal or rotational forces applied when a worker steps up or down.

[0071] Figure 8 is a configuration diagram showing an example of the step stool stabilization mechanism 10c being installed on the step stool 20c. The difference from the step stool stabilization mechanism 10b shown in Figure 3 is that four through grooves 13 are provided corresponding to the step stool 20c. As already explained, the step stool stabilization mechanism 10c supports the side plate 221 of the step stool 20a from the inside in four directions by the mounting part 12. Similarly, in this embodiment, the mounting part 12 supports the side plate 221 in the extended state from the inside in four directions of the step stool 20c. This provides a step stool that is supported by the mounting part 12 and is stable against diagonal or rotational forces applied when a worker steps up or down. Because the width of the step stool stabilization mechanism 10c is wider than the step stool 20a, and the flat plates 11 extend outward in all four directions of the side plates 221, the mounting parts 12 can support the diagonal or rotational movement of the side plates 221 regardless of which direction the worker places their feet on the periphery of the top plate 21 when stepping up or down on the step stool 20a or while working, thereby stabilizing the step stool.

[0072] Figures 9 and 10 are perspective views showing an example configuration of a step stool stabilization mechanism 10f in another embodiment. The step stool 20d is a step stool with a shape similar to the step stool disclosed in Japanese Patent Application Publication No. 2012-127145. The step stool 20d has a structure in which the top plate 21 is supported by two upper and lower bases, and can be made higher by stacking the upper base 222 and lower base 223 vertically, and lower by combining the upper base 222 and lower base 223. The upper base 222 and lower base 223 are capable of vertical movement and rotation in the horizontal plane around their central axis, and by rotating them 90°, it is possible to switch between a state where they are stacked vertically to make them higher and a state where they are combined to make them lower. Figure 9 shows the state in which the upper base 222 and lower base 223 of the step stool 20d are stacked vertically to make them higher, and the side plates 221 of the upper base 222 and lower base 223 are stacked vertically in a continuous manner. A gap 25 is formed between the leg portion 23 and the side plate 221 of the base 223. Figure 10a is a plan view of the bottom surface of the base 223 as seen from the floor. The side plate 221 of the base 223 is integrally formed with the opposing surface and is recessed in a roughly trapezoidal concave shape, and has a slanted side plate portion 2231 which is the slanted part of the concave recess.

[0073] The flat plate 11 has a roughly T-shape and consists of a portion that is narrower than the width of the gap 25 so as to be located below the gap 25 of the base 22, and a portion that protrudes from the base 22 to the floor surface when viewed from above. In this embodiment, the portion that protrudes to the floor surface is configured to be approximately the same width as the side plate 221 of the base 22, but it may be narrower or wider. If it is configured to be narrower, the flat plate becomes more compact, but the diagonal stability of the base 22 relative to the side plate 221 is slightly reduced. If it is configured to be wider, the flat plate becomes larger, but the diagonal stability of the base 22 relative to the side plate 221 is increased. The mounting portion 12 is formed vertically upward from the flat plate 11 and is located close to the inside of the side plate 221 of the step stool 20d when it is installed on the step stool 20d. A locking shaft 14 is formed on the flat plate 11 in an upward vertical direction, and is formed to fit into a drainage hole 28 formed on the surface of the side plate 221 that contacts the floor surface, as shown in Figure 10, when the flat plate 11 is installed on the step stool 20d. Here, it is described as a "drainage hole 28," but "drainage" is just one example, and the hole 8 can be for any purpose and of any shape. A circular hole is given as an example, and the mounting part 12 is described as having a locking shaft 14 to match that hole. It is important that the flat plate 11 has a structure that engages with the bottom surface of the base 22 at two or more points separated in the same direction as the direction in which the flat plate 11 moves away from the step stool 20d, but its function and shape are arbitrary.

[0074] The step stool stabilization mechanism 10f is installed on the floor surface. The step stool 20d is moved from top to bottom so that the inner surface of the side plate 221 is close to the mounting part 12. At this time, the step stool 20d is moved so that the mounting part 12 is inserted into the widest part of the tapered space formed by the side plate 221 and the side plate slanted part 2231, as shown by the dashed line in Figure 10. The width of the two mounting parts 12 is approximately the same as the width of the two spaces shown by the dashed line, and in this way the mounting part 12 is fixed to the step stool 20d in the horizontal direction of the side plate 221. Further, the step stool 20d is moved downward until the leg part 23 touches the floor surface so that the locking shaft 14 is inserted into the drain hole 28. Figure 9 shows the state after installation. In this state, the side plate 221 of the base 22 is supported by the mounting part 12 and the locking shaft 14, and can support the diagonal or rotational movement of the side plate 221. When fixing the step stabilization mechanism 10f to the floor, it can be secured using pegs or bolts via the anchor holes 19.

[0075] Figures 11 and 12 are perspective views showing an example configuration of a step stool stabilization mechanism 10g in another embodiment. Figure 12 shows the step stool stabilization mechanism 10g installed on the step stool 20d. The step stool stabilization mechanism 10g consists of a flat plate 11, four mounting parts 12, and a locking shaft 14. The flat plate 11 has a roughly I-shape, with its longitudinal direction (left-right direction in the drawing) being longer than the length of one side of the base 22, and its width perpendicular to the longitudinal direction being approximately the same as the width of the base 22. The width of the flat plate 11 perpendicular to the longitudinal direction has a section that is narrower than the width of the gap 25 in the base 22, and this narrow section is formed to extend longer than the width of the base 22. As a result, when the flat plate 11 is installed under the base 22, it penetrates the gap 25 between the opposing side plates 221 of the base 22 and the floor surface, and is installed in a manner that protrudes from both sides of the opposing side plates 221. Similar to the step stool stabilization mechanism 10f, the mounting portion 12 is located inside the side plate 221, and the locking shaft 14 is inserted into the drain hole 28.

[0076] The step stool stabilization mechanism 10g is installed on the floor surface. The step stool 20d is moved from top to bottom so that the inner surface of the side plate 221 is close to the mounting part 12. At this time, the step stool 20d is moved so that the mounting part 12 is inserted into the widest part of the tapered space formed by the side plate 221 and the side plate slanted part 2231, as shown by the dashed line in Figure 10 (the same applies to the opposite side plate 221, although it is not shown). The widths of the two mounting parts 12 are approximately the same as the widths of the two spaces shown by the dashed line, and in this way the mounting part 12 is fixed to the step stool 20d in the horizontal direction of the side plate 221. Further, the step stool 20d is moved downward until the leg part 23 touches the floor surface so that the locking shaft 14 is inserted into the second drain hole 28. Figure 12 shows the state after installation. In this state, the side plate 221 of the base 22 is supported by the mounting portion 12 and the locking shaft 14, and can support the diagonal or rotational movement of the side plate 221. In particular, even if a worker places their feet on both ends of the step stabilization mechanism 10g of the base 22 in the longitudinal direction, the mounting portion 12 supports the inner surface of the side plate 221, thereby preventing the step stool 20d from tilting. When fixing the step stabilization mechanism 10g to the floor, it can be fixed by pegs or bolts through the anchor holes 19.

[0077] Figures 13 and 14 are perspective views showing an example configuration of a step stool stabilization mechanism 10h of another embodiment. The step stool stabilization mechanism 10h consists of a flat plate 11, four mounting parts 12, and a locking shaft 14. Figure 14 shows the step stool stabilization mechanism 10h installed on the step stool 20d. The flat plate 11 is approximately square in shape, and the length of each side of the flat plate 11 is longer than the length of one side of the base 22. Four pentagonal through grooves 13 are formed in the flat plate 11. The through grooves 13 are formed so that when the step stool 20a is positioned on the flat plate 11, the legs 13 of the step stool 20a pass through the through grooves 13 and are placed on the floor surface. The through grooves 13 are not limited to this form; as shown in Figure 3, two rectangular through grooves 13 corresponding to two legs 23 may be formed. Also, the shape of the through grooves 13 may be any shape, such as a circle, as long as it is a shape through which the legs 23 pass. Similar to the step stool stabilization mechanism 10g, the mounting portion 12 is located inside the side plate 221, and the locking shaft 14 is inserted into the drain hole 28.

[0078] The step stool stabilization mechanism 10h is installed on the floor surface. The step stool 20d is moved from top to bottom so that the inner surface of the side plate 221 is close to the mounting part 12. At this time, the step stool 20d is moved so that the mounting part 12 is inserted into the widest part of the tapered space formed by the side plate 221 and the side plate slanted part 2231, as shown by the dashed line in Figure 10 (the same applies to the opposite side plate 221, although it is not shown). The width of the two mounting parts 12 is approximately the same as the width of the two spaces shown by the dashed line, and in this way the mounting part 12 is fixed to the step stool 20d in the horizontal direction of the side plate 221. Further, the step stool 20d is moved downward until the leg part 23 touches the floor surface so that the locking shaft 14 is inserted into the second drain hole 28. Figure 14 shows the state after installation. In this state, the side plate 221 of the base 22 is supported by the mounting part 12 and the locking shaft 14, and can support the diagonal or rotational movement of the side plate 221. In particular, even if a worker places their foot on any periphery of the step stabilization mechanism 10g of the base 22, the mounting part 12 supports the inner surface of the side plate 221, thereby preventing the step stool 20d from tilting. When fixing the step stabilization mechanism 10h to the floor, it can be fixed with pegs or bolts via the anchor holes 19.

[0079] In the configuration examples described so far using Figures 11 to 14, the locking shaft 14 is a separate component from the mounting part 12, and therefore has been given a separate name. However, the locking shaft 14 and the mounting part 12 can be considered as a single component and referred to as the mounting part. Alternatively, they can each be given a different name and then collectively referred to as the mounting part.

[0080] Figures 15 and 16 are perspective views showing an example configuration of a step stool stabilization mechanism 10i in another embodiment. The step stool stabilization mechanism 10i is attached to a step stool 20a and consists of a mounting part 12 and a support plate 16. The mounting part 12 has a rectangular cylindrical shape and has an opening 121 formed in the direction of the floor surface when it is installed on the step stool 20a. The mounting part 12 is rectangular in plan view from above and, in this embodiment, is approximately the same size as the inner rectangle surrounded by the side plates 221 of the step stool 20a. The support plate 16 is shaped to be housed in the mounting part 12 and is a substantially rectangular planar member having a convex guide part 161. The support plate 16 can slide and move inside the mounting part 12. The support plate 16 may also be slidable inside the mounting part 12 from the opposite direction to the direction shown in Figure 16, and the support plate 16 may be configured to slide in either the left-right direction of the mounting part 12 in the drawing. Furthermore, it is preferable that the mounting portion 12 be provided with a stopper mechanism to prevent the support plate 16 from falling off the mounting portion 12.

[0081] To install the step stool stabilization mechanism 10i, first, the mounting part 12 is fitted into the space surrounded by the four side plates 221, and fixed in place when the lowest point of the side plates coincides with the bottom surface of the mounting part 12. Fixing may be done by adhesive, or mounting holes may be made in the side plates 221 and fixed with bolts or the like. Alternatively, as shown in Figure 21, a projection member 122 may be formed on the upper surface of the mounting part 12 so as to fit into a recess (not shown) on the bottom surface of the step stool 20a, and the step stool stabilization mechanism 10i may be fixed to the step stool 20a by fitting the recess and the projection part 122 together. This makes the step stool stabilization mechanism 10i of this embodiment detachable. After fixing the mounting part 12, the support plate 16 that was stored inside the mounting part 12 is slid through the gap 25 and protrudes from the side plates 221. When not in use, the support plate 16 can be slid and stored inside the mounting part 12.

[0082] This integrates the stabilization mechanism and the step stool, making it easier to handle, such as transporting and setting up the step stool. When stabilization is needed, the flat plate can be slid out to contribute to stabilization, and when stabilization is not needed, it can be stored in the mounting part inside the step stool. In addition, the support plate 16 can be fixed to the floor surface in the extended state by securing it with pegs or bolts through the anchor holes 19.

[0083] Here, the support plate 16 is not a flat plate in terms of its structure, so for convenience, a different name, "support plate," is used. However, since it has the same function as the flat plate 11 in other configuration examples, it is in a broad sense a modified version of the flat plate 11.

[0084] Figures 17 and 18 are perspective and plan views showing an example configuration of a step stool stabilization mechanism 10j in another embodiment. The step stool 20e has substantially the same configuration as the step stool 20a, but differs in that the legs 23 have a cylindrical shape. The step stool stabilization mechanism 10j consists of a flat plate 11 and a mounting part 12. The flat plate 11 has a sector shape that is one-quarter of a circle, and its radius is approximately half the radius of one side of the step stool 20e. The thickness of the flat plate 11 is less than the height of the gap 25 in the step stool 20e. The mounting part 12 is a rotatable member made of ball bearings. The mounting part 12 is fixed and attached to the opening of the flat plate 11, and the flat plate 11 is fixed to the step stool 20e by fitting the legs 23 of the step stool 20e to the inner circumference side of the mounting part 12. As a result, the flat plate 11 can rotate around the legs 23 as an axis, and the flat plate can be extended from the side plate 221. Furthermore, the flat plate 11 can be fixed to the floor surface in an extended position using pegs, bolts, etc., via anchor holes 19.

[0085] This integrates the stabilization mechanism with the step stool, making it easier to handle, such as transporting and setting up the step stool. When stabilization is needed, the flat plate can be extended by rotating, contributing to stability, and when stabilization is not needed, it can be stored inside the bottom of the step stool.

[0086] In this embodiment, the leg portion 23 is shown as cylindrical, but the shape of the leg portion can be any shape as long as it fits inside the rotatable mounting portion 12. Also, the mounting portion 12 of the flat plate 11 may be fixed to the leg portion 23 of the step stool 20e, or it may be configured to be detachable.

[0087] Figure 19 is a perspective view showing an example configuration of a step stool stabilization mechanism 10k in another embodiment. Figure 19a shows the state before installation, and Figure 19b shows the state after installation. The step stool 20f has a similar structure to the step stool 20a, but differs in that corner recesses 29 are formed at the four corners of the top plate 21, lower than the height of the top plate 21. The flat plate 11 has a roughly rectangular shape, and its long side is wider than the width of the side plate 221. The mounting portion 12 is formed vertically upward from the flat plate 11, and is bent at a 90-degree angle at a height where the height from the floor is the same as the height of the top of the corner recess 29 of the base 22, with a horizontal surface formed to cover the corner recess 29 and the drainage holes 24. The step stool 20f in this embodiment has four drainage holes 24 and corner recesses 29, and two mounting portions 12 are formed on the flat plate 11 to cover two of them. A rod-shaped member 17 is formed vertically downward at the position corresponding to the drainage holes 24 on the horizontal surface of the mounting portion 12. The rod-shaped member 17 is inserted into the drainage hole 24, and the mounting part 12 and the step stool 20f are aligned horizontally with the floor surface and fixed vertically to each other. The flat plate 11 may have anchor holes 19 that penetrate it so that it can be fixed to the ground with pegs or bolts. The flat plate 11, the multiple mounting parts 12 and the rod-shaped member 17 are made of metal and may be formed as a single unit or may be formed separately and joined together with bolts. In addition, grooves for slip prevention may be formed on the surface of the flat plate 11 that is installed on the floor surface, or a slip prevention sheet may be attached.

[0088] During installation, the step stabilization mechanism 10k is brought close to the step stool 20f installed on the floor from above, and the rod-shaped member 17 is inserted into the drain hole 24. From this position, the mounting part 12 is slid vertically until the lower part of the flat plate 11 contacts the floor surface, with the vertical plane of the mounting part 12 and the side plate 221 in close proximity. Figure 19b shows the state after installation, in which the step stool 20f is supported by the mounting part 12 at the side plate 221, the rod-shaped member 17 is fitted into the drain hole 24, and the horizontal plane of the mounting part 12 is located in the corner recess 29. The size of the horizontal plane should be approximately the same shape as the corner recess 29 when viewed from above, and its thickness should also be approximately the same as the depth of the corner recess 29. With this shape, the mounting part 12 can be installed to form a plane that is integrated with the top plate 21, improving the safety of workers on the top plate 21, and also strengthening the fixation of the mounting part 12 to the horizontal part. By installing the mounting part 12, the step stabilization mechanism 10k and the step stool 20f are fixed to each other horizontally with respect to the floor surface.

[0089] The step stool stabilization mechanism 10k of this embodiment allows the stabilization mechanism to be attached after the step stool has been set up, and the step stool stabilization mechanism can be easily attached and detached. In addition, the flat plate of the stabilization mechanism can be designed to be at the same height as the bottom surface of the step stool.

[0090] Although the holes formed in the top plate 21 have been described as "drainage holes 24," their purpose and structure are not limited to drainage. For example, the legs 23 could be cylindrical, and the holes could be designed to fit with the cylindrical legs 23 when stacking the step stools 20a vertically.

[0091] Figure 20 is a perspective view showing an example configuration of a step stool stabilization mechanism 10m in another embodiment. The step stool 20g is a step stool that, like the step stool 20b, has a connecting portion 26 and a connecting receiving portion 27, but differs in that the connecting portion 26 and the connecting receiving portion 27 are formed on the same surface. The connecting portion 26 is shaped to fit into the connecting receiving portion 27, and the step stool 20g can be expanded by engaging the connecting portion 26 and the connecting receiving portion 27 of adjacent step stools 20g. The step stool stabilization mechanism 10m consists of a mounting portion 12 and a flat plate 11, and the mounting portion 12 is formed vertically upward from the flat plate 11. As shown in Figure 20b, when the step stool stabilization mechanism 10m is installed on the step stool 20g, a joint portion 15 is formed on the surface of the mounting portion 12 that contacts the step stool 20g, having the same shape as the connecting portion 26 and the connecting receiving portion 27 of the step stool 20g. The joint 15 can engage with the connecting part 26 and connecting receiving part 27 of the step stool 20g. This connects and fixes the step stool stabilization mechanism 10m to the step stool 20g. The flat plate 11 and the multiple mounting parts 12 are made of metal and may be formed integrally or separately and joined together by bolts. Furthermore, grooves for slip resistance may be formed on the surface of the flat plate 11 that is placed on the floor, or a slip-resistant sheet may be attached.

[0092] Figure 20a shows the state before the step stool stabilization mechanism 10m is installed on the step stool 20g. The step stool stabilization mechanism 10m is brought close to the step stool 20g, which is placed on the floor, from above, and the lower end of the plane where the joint portion 15 of the connecting portion 12 is formed is brought into contact with the upper surface of the top plate 21 of the step stool 20g, and the step stool stabilization mechanism 10m is moved while sliding it downwards while approaching a position where the connecting portion 15 engages with the connecting portion 26 and connecting receiving portion 27 of the step stool 20g. In this state, the joint portion 15 engages with the connecting portion 26 and connecting receiving portion 27, and the step stool stabilization mechanism 10m is further slid downwards until the lower surface of the flat plate 11 touches the floor. Figure 20b shows the state after installation, in which the side plate 221 of the step stool 20g is supported by the mounting portion 12, and the step stool stabilization mechanism 10m and the step stool 20g are fixed to each other horizontally with respect to the floor. When fixing the 10m step stabilization mechanism to the floor, it can be secured using pegs or bolts via the anchor holes 19.

[0093] The step stool stabilization mechanism 10m of this embodiment allows for a stronger connection between the stabilization mechanism and the step stool, while also making it easy to attach and detach, thus facilitating handling such as transporting and setting up the step stool.

[0094] In the embodiments described above, the step stools 20a to 20g were described as having a rectangular shape, but the invention is not limited to this case. The step stool may have a roughly circular, semicircular, or polygonal shape other than a rectangle when viewed from above. Similarly, the shape of the flat plate was described as having a rectangular or rotating sector shape, but it may also be circular, elliptical, or a polygonal shape other than a rectangle, as long as it extends outwards from the step stool and has the function of improving the stability of the step stool. Furthermore, in each embodiment, if the step stool stabilization mechanism is to be used at all times, the effort of attaching and detaching it can be eliminated by fixing the mounting part to the step stool, and the step stool stabilization mechanism and the existing step stool can be combined into a single, new step stool to improve stability.

[0095] Although the present inventor's invention has been specifically described above based on embodiments, it goes without saying that the present invention is not limited thereto and can be modified in various ways without departing from its essence. [Explanation of Symbols]

[0096] 10a~10m Step stool stabilization mechanism 11 flat plate 12 Mounting part 121 Opening 122 Protruding member 13 Through groove 14 Locking shaft 15 Joint 16 Support plate 17. Rod-shaped member 19 Through hole 161 Guide Section 20a~20g Step stool 21 Top plate 22 units 221 Side panel 222 Upper stand 223 Lower stand 2231 Slanted side plate 23 Legs 24 drainage holes 25 gaps 26 Connecting part 27 Connecting receiving part 28 Second drain hole 29 Corner recess

Claims

1. A step stool stabilization mechanism that can be attached to a step stool having a top plate and a base, It comprises a mounting portion that can be attached to the aforementioned base, and a flat plate that can extend outwards from the base to the floor surface when viewed from above, The mounting portion is integrally formed with the flat plate and is fixed horizontally by being fitted into a recess on the bottom surface of the base. Step stool stabilization mechanism.

2. A step stool stabilization mechanism that can be attached to a step stool having a top plate and a base, It comprises a mounting portion that can be attached to the aforementioned base, and a flat plate that can extend outwards from the base to the floor surface when viewed from above, The mounting portion comprises a member that fits into a recess provided on the top plate, and a member that extends along the outer wall of the base to the bottom and fixes the flat plate so that it contacts the floor surface at approximately the same height as the bottom surface of the base. Step stool stabilization mechanism.

3. A step stool stabilization mechanism that can be attached to a step stool having a top plate and a base, It comprises a mounting portion that can be attached to the aforementioned base, and a flat plate that can extend outwards from the base to the floor surface when viewed from above, The aforementioned step stools have connecting parts for connecting each other horizontally, The mounting portion is configured to be connectable to the connecting portion, and the flat plate is fixed so as to be in contact with a floor surface at approximately the same height as the bottom surface of the stand. Step stool stabilization mechanism.

4. A step stool stabilization mechanism that can be attached to a step stool having a top plate and a base, It comprises a mounting portion that can be attached to the aforementioned base, and a flat plate that can extend outwards from the base to the floor surface when viewed from above, The aforementioned stand is rectangular when viewed from above. The width of the flat plate is approximately the same as the width of the side attached to the base. Step stool stabilization mechanism.

5. A step stool stabilization mechanism that can be attached to a step stool having a top plate and a base, It comprises a mounting portion that can be attached to the aforementioned base, and a flat plate that can extend outwards from the base to the floor surface when viewed from above, The aforementioned stand is rectangular when viewed from above. The width of the flat plate is wider than the side attached to the base. Step stool stabilization mechanism.

6. In any one of claims 1 to 5, The aforementioned flat plate has a hole that penetrates the floor surface. Step stool stabilization mechanism.

7. A step stool having a top plate, a base, and a stabilizing mechanism, The stabilization mechanism comprises a mounting portion that can be attached to the base and a flat plate that can extend from the base to the floor surface outside, The mounting portion is integrally formed with the flat plate and is fixed horizontally by being fitted into a recess on the bottom surface of the base. Step stool.

8. A step stool having a top plate, a base, and a stabilizing mechanism, The stabilization mechanism comprises a mounting portion that can be attached to the base and a flat plate that can extend from the base to the floor surface outside, The mounting portion is fixed to the base and supports the flat plate so that it can slide horizontally. The flat plate is configured such that, by sliding, it can be changed between a state in which it extends outward from the mounting portion to the outside of the base and a state in which it is housed in the mounting portion. Step stool.

9. A step stool having a top plate, a base and a stabilizing mechanism, The stabilization mechanism comprises a mounting portion that can be attached to the base and a flat plate that can extend from the base to the floor surface outside, The mounting portion supports the flat plate so that it can rotate in a horizontal plane at the bottom of the base. The flat plate is configured such that, by rotation, it can be changed between a state in which it protrudes outward from the mounting portion to the outside of the base and a state in which it is stored under the bottom of the base. Step stool.

10. A step stool having a top plate, a base and a stabilizing mechanism, The stabilization mechanism comprises a mounting portion that can be attached to the base and a flat plate that can extend from the base to the floor surface outside, The aforementioned stand is rectangular when viewed from above. The width of the flat plate is approximately the same as the width of the side attached to the base. Step stool.

11. A step stool having a top plate, a base, and a stabilizing mechanism, The stabilization mechanism comprises a mounting portion that can be attached to the base and a flat plate that can extend from the base to the floor surface outside, The aforementioned stand is rectangular when viewed from above. The width of the flat plate is wider than the side attached to the base. Step stool.

12. In any one of claims 7 to 11, The aforementioned flat plate has a hole that penetrates the floor surface. Step stool.

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