Folding scaffolding device

Abstract

A folding scaffolding device is disclosed, and according to one embodiment of the present invention, the folding scaffolding device includes a support frame that supports an object, and a pillar frame that is located below the support frame and rotatably connected to the support frame, the pillar frame includes a plurality of segment frames that are sequentially connected to the support frame, the plurality of segment frames are rotatably connected to each other, and in a first state, the length direction of each of the plurality of segment frames faces the ground, and in a second state in which the plurality of segment frames are rotated from the first state, the length direction of each of the plurality of segment frames is aligned with the ground.

Description

Detailed Description of the Invention

[0001] [Technical field] The present invention relates to a folding scaffolding device, and more particularly to a folding scaffolding device that can be converted into a folded state and an unfolded state.

[0002] [Background technology] A scaffold is a device that supports loads such as workers, work objects, or work tools. When a work area is located above a certain height from the ground, workers can use the scaffold to approach the work area and perform their work.

[0003] The scaffolding system can be used in a variety of industrial fields, for example, when working on objects that are high above the ground, such as buildings, automobiles, ships, and structures. The scaffolding device may include a support frame that supports an object such as a worker, work piece, or work tool at a position spaced apart from the ground, and may include a column frame for supporting the support frame against the ground or the like.

[0004] On the other hand, if the operating position of the work object is at a high level, the scaffolding equipment stored in a storage location can be moved to the work area, set up and used, and then removed and stored again once the work is completed. Patent Document 1 discloses a scaffolding device in which a part of a frame structure is folded to switch between a folded state and an unfolded state.

[0005] The scaffolding device of Patent Document 1 has a support frame or foothold for supporting an object removed from the unfolded scaffolding device, and the connecting frame connecting the pair of column frames is folded, thereby narrowing the gap between the pair of column frames.

[0006] However, the scaffolding device of Patent Document 1 does not reduce the overall height of the scaffolding device even when it is folded, which may be disadvantageous when moving and storing scaffolding devices above a certain height, and the connecting frame may protrude from the column frame, increasing the space required during storage.

[0007] Therefore, it is an important task in the technical field to develop a folding scaffolding device that can effectively reduce the overall height when folded for storage, thereby improving ease of handling, minimize the space required for storage, thereby improving space utilization, and can stably support the load of an object despite having a folding structure.

[0008] [Summary of the Invention] [Problem to be solved by the invention] An object of an embodiment of the present invention is to provide a folding scaffolding device that can stably support the load of an object.

[0009] It is also an object of embodiments of the present invention to provide a foldable scaffolding device that can be effectively increased or decreased in size. Another object of the present invention is to provide a foldable scaffolding device whose size can be changed by efficiently folding or unfolding at least a portion of the frame.

[0010] Another object of the present invention is to provide a folding scaffolding device that can effectively suppress an increase in the required area on the ground in the folded and unfolded states. Another object of the present invention is to provide a folding scaffolding device that can efficiently maintain a folded state.

[0011] Another object of embodiments of the present invention is to provide a foldable scaffolding system that can be conveniently folded or unfolded by a worker. Another object of the present invention is to provide a folding scaffolding device that can effectively reduce the overall height in the folded state.

[0012] [Means for solving the problem] A folding scaffolding device according to one embodiment of the present invention includes a support frame and a column frame, the support frame supports an object, and the column frame is located below the support frame and rotatably connected to the support frame.

[0013] The column frame includes a plurality of division frames connected in sequence to the support frame, and the division frames are rotatably connected to each other. In a first state, the length direction of each of the plurality of segment frames faces the ground, and in a second state in which the plurality of segment frames are rotated from the first state, the length direction of each of the plurality of segment frames may be aligned with the ground.

[0014] In the second state, the division frame may be disposed so as not to deviate between both ends of the support frame based on the length direction of the support frame. The pillar frame further includes a split hinge shaft that rotatably connects adjacent pairs of the plurality of split frames, and the plurality of split frames can be converted into the second state by rotating in the first state so that the split hinge shaft moves toward the support frame.

[0015] In the second state, a portion of the pillar frame may protrude from the support frame in a direction that interrupts the longitudinal direction of the support frame. In the second state, a portion of each of the plurality of divided frames may protrude from the support frame in a direction that interrupts the length of the support frame.

[0016] The plurality of divided frames may include a first divided frame and a second divided frame, one end of the first divided frame may be rotatably connected to the support frame, and one end of the second divided frame may be rotatably connected to the other end of the first divided frame.

[0017] In the process of converting from the first state to the second state, the other end of the first divided frame and the one end of the second divided frame may be rotated to approach the support frame. The support frame may include a plurality of support parts, and the plurality of support parts may include a main support part and an interlocking support part rotatably connected to the main support part and interlocking with the column frame to rotate.

[0018] The support frame may include a support section having a plurality of sides respectively defined by the plurality of support parts, and any one of the plurality of sides of the support section may be defined by the interlocking support part. In the process of rotating from the first state to the second state, the column frame may be deformed so that the height of the support cross section decreases.

[0019] In the process of converting from the first state to the second state, the support cross section may be deformed by a four-bar linkage movement such that a pair of opposing sides of the plurality of sides approach each other in a lined-up state. The main support part and the interlocking support part may extend along a first direction aligned with the ground, and the interlocking support part may be connected to the main support part via a support hinge shaft extending along the first direction.

[0020] The interlocking support part may be positioned below the main support part in the first state, and may be aligned with the interlocking support part in a direction parallel to the ground in the second state. During the process of converting from the first state to the second state, at least a portion of the pillar frame may protrude from the main support part along with the interlocking support part in a direction parallel to the ground.

[0021] An embodiment of the present invention may further include an interlocking joint that rotatably connects the interlocking support part and the column frame and interlocks the interlocking support part with the column frame. The joint shaft of the interlocking joint may be axially rotated together with the interlocking support part. The pillar frame may be connected to the support frame via an upper hinge shaft, and the joint shaft of the interlocking joint and the upper hinge shaft may extend in different directions.

[0022] The upper hinge shaft, the support hinge shaft, and the joint shaft may have different axial directions. The upper hinge shaft may extend in a second direction perpendicular to the first direction, and the joint shaft may extend obliquely with respect to the first direction.

[0023] The interlocking support part may include a support inclined portion extending at an angle with respect to the first direction, the pillar frame may include a pillar inclined portion positioned opposite the support inclined portion and extending parallel to the support inclined portion, and the interlocking joint may rotatably connect the support inclined portion and the pillar inclined portion.

[0024] At least a portion of the column frame is linked to the linked support part via the linked joint and can rotate around the upper hinge axis. The column frame may include a plurality of column parts and a column cross section having a plurality of sides respectively defined by the plurality of column parts, and any one of the plurality of column parts defining one side of the column cross section may include the column inclined portion.

[0025] In the process of converting from the first state to the second state, the column cross section may approach each other with a pair of opposing sides aligned by a four-bar linkage movement. An embodiment of the present invention may further include a bottom frame disposed below the column frame, the column frame being rotatably connected to the support frame via an upper hinge shaft and to the bottom frame via a lower hinge shaft.

[0026] The plurality of divided frames may include a first divided frame connected to the support frame via the upper hinge shaft, and a second divided frame connected to the first divided frame via the divided hinge shaft and connected to the bottom frame via the lower hinge shaft.

[0027] In the process of converting from the first state to the second state, the split hinge shaft may be moved closer to the center of the support frame. [Effects of the invention] The embodiments of the present invention can provide a foldable scaffolding device that can stably support the load of an object.

[0028] Additionally, embodiments of the present invention may provide a collapsible scaffolding device that can be effectively increased or decreased in size. Additionally, embodiments of the present invention may provide a foldable scaffolding device in which at least a portion of the frame can be efficiently folded or unfolded to vary its size.

[0029] Furthermore, the embodiment of the present invention can provide a foldable scaffolding device that can effectively suppress an increase in the required area on the ground in the folded and unfolded states. Additionally, embodiments of the present invention may provide a foldable scaffolding device that can be efficiently maintained in a folded state.

[0030] Additionally, embodiments of the present invention may provide a foldable scaffolding system that can be conveniently folded or unfolded by a worker. Additionally, embodiments of the present invention may provide a foldable scaffolding device that can effectively reduce the overall height in the folded state. [Brief explanation of the drawings]

[0031] [Figure 1] FIG. 1 is a perspective view showing a folding scaffolding device according to one embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view showing the process of folding the folding scaffolding device of FIG. 1 from a first state to a second state. [Figure 3] 3 is a perspective view showing the folding scaffolding device of FIG. 1 in a second fully folded state. [Figure 4] FIG. 4 is a front view showing the foldable scaffolding device according to one embodiment of the present invention in a first state in which it is fully unfolded. [Figure 5] FIG. 5 is a front view showing the folding scaffolding device of FIG. 4 in the process of being folded. [Figure 6] 6 is a front view showing the folding scaffolding device of FIG. 4 in a second state where it is fully folded. [Figure 7] FIG. 7 is a diagram showing a hinge portion that rotatably connects frames in one embodiment of the present invention. [Figure 8] FIG. 8 is a diagram showing an expanded state of frames connected via hinge portions in one embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing the process of folding the frame of FIG. [Figure 10] FIG. 10 is a diagram showing a support frame of a folding scaffolding device according to one embodiment of the present invention. [Figure 11] FIG. 11 is a diagram showing a column frame of a folding scaffolding device according to one embodiment of the present invention. [Figure 12] FIG. 12 is a perspective view showing the support frame and the pillar frame in the first state according to the embodiment of the present invention. [Figure 13] 13 is a perspective view showing a process in which the pillar frame of FIG. 12 is rotated from the first state to the second state. [Figure 14] 14 is a perspective view showing the column frame of FIG. 12 in a second state where it is fully rotated. [Figure 15] FIG. 15 is a conceptual diagram showing a first state of a column frame having an axial connection line DR inclined relative to the longitudinal direction in one embodiment of the present invention. [Figure 16] FIG. 16 is a diagram showing a state in which the height of the support frame reaches its maximum in the process in which the pillar frame of FIG. 15 is rotated from the first state to the second state. [Figure 17] FIG. 17 is a diagram showing a process in which the pillar frame of FIG. 16 is rotated to the second state. [Figure 18] FIG. 18 is a diagram showing the pillar frame of FIG. 15 rotated to the second state. [Figure 19] FIG. 19 shows a support ramp and a column ramp of a folding scaffolding system according to one embodiment of the present invention. [Figure 20] FIG. 20 is a perspective view showing an interlock joint in a first state according to one embodiment of the present invention. [Figure 21] FIG. 21 is a perspective view showing a process in which the interlocking joint of FIG. 20 is converted into a second state. [Figure 22]FIG. 22 is a perspective view showing the interlocking joint of FIG. 20 converted into the second state. [Figure 23] FIG. 23 is a diagram showing a first joint body and a second joint body of an interlocking joint in one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts that are not relevant to the description are omitted to clearly explain the present invention, and similar parts are designated by similar reference numerals throughout the specification.

[0033] In this specification, duplicated descriptions of the same components will be omitted. Furthermore, when a component is referred to as being "coupled" or "connected" to another component, it should be understood that it may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0034] Furthermore, the terms used in this specification are merely used to describe particular embodiments and are not intended to limit the present invention. Furthermore, in this specification, singular expressions can include plural expressions unless the context clearly indicates otherwise.

[0035] Furthermore, in this specification, the terms "comprise" or "have" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and should be understood not to preclude the presence or possibility of adding one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] Also, as used herein, the term "and / or" includes a combination of multiple listed items or any of multiple listed items. As used herein, "A or B" can include "A," "B," or "both A and B."

[0037] Figure 1 shows a folding scaffolding device 1 according to one embodiment of the present invention, Figure 2 shows the process of the scaffolding device 1 of Figure 1 being folded, and Figure 3 shows the scaffolding device 1 of Figure 1 completely folded.

[0038] A folding scaffolding device 1 according to one embodiment of the present invention includes a support frame 100. The support frame 100 supports an object. Here, support includes support through direct contact with the object as well as support of a load through indirect contact.

[0039] The object placed on the support frame 100 may include a worker, a work object, a work tool, etc. A worker may perform work on the work object by sitting on the support frame 100 placed in the work area. At least a portion of the support frame 100 may be formed in a plate shape to stably support an object that may come into contact with a worker, etc. The support frame 100 may also be provided with a support plate on its upper surface to support the object.

[0040] The support frame 100 may be elongated in one direction to define a length, and the length direction D1 of the support frame 100 may be substantially aligned with the ground. However, if necessary, the length direction D1 or the top surface of the support frame 100 may be inclined to form a predetermined angle with respect to the ground.

[0041] The folding scaffolding device 1 according to an embodiment of the present invention includes a column frame 200. The column frame 200 is located below the support frame 100 and can be rotatably connected to the support frame 100. The column frame 200 may support the support frame 100 from the ground, etc. The column frame 200 may space the support frame 100 from the ground so that the support frame 100 is positioned at a predetermined height relative to the ground.

[0042] The column frame 200 may be disposed approximately below the support frame 100 and may be rotatably connected to the support frame 100. The column frame 200 and the support frame 100 may be connected via a hinge portion 50. Unless otherwise specified, in the present invention, multiple objects that are rotatably connected may be connected via a hinge unit 50. The hinge unit 50 may include a hinge axis in terms of physical configuration and / or conceptually for rotational movement.

[0043] In the present invention, when it is described that a plurality of components are connected via a hinge shaft, it can be understood that the plurality of components are rotatably connected via a hinge portion 50 including the hinge shaft. In one embodiment of the present invention, the column frame 200 is provided rotatably relative to the support frame 100, and the height H of the support frame 100 from the ground can be changed by rotating the column frame 200.

[0044] The column frame 200 may provide a means for supporting the load of the support frame 100 and / or objects on the support frame 100 from the ground or other structures located below the column frame 200 . The pillar frame 200 may include a plurality of division frames sequentially connected to the support frame 100. For example, the pillar frame 200 may be composed of a plurality of division frames, and one of the division frames may be connected to the support frame 100, and another of the division frames may be connected to the other one of the division frames, so that the plurality of division frames may have a sequential connection relationship.

[0045] The plurality of divided frames may be rotatably connected to one another. For example, the plurality of divided frames may include a first divided frame 201 and a second divided frame 202, where the first divided frame 201 may be rotatably connected to the support frame 100, and the second divided frame 202 may be rotatably connected to the first divided frame 201. The height H of the support frame 100 may be changed depending on the rotation state of the plurality of divided frames.

[0046] Meanwhile, in one embodiment of the present invention, the foldable scaffolding device 1 may have a first state and a second state. The first state corresponds to an unfolded state in which the foldable scaffolding device 1 is designed to stably support an object, and the second state corresponds to a folded state in which the required space of the foldable scaffolding device 1 is minimized in which the required space is minimized for ease of handling or efficient storage.

[0047] In a first state, the length direction D2 of each of the plurality of segment frames faces the ground, and in a second state in which the plurality of segment frames are rotated from the first state, the length direction D2 of each of the plurality of segment frames can be aligned with the ground. As a result, the height H of the support frame 100 in the first state may be higher than that in the first state, and the height H of the support frame 100 may be minimized in the second state. Also, in one embodiment of the present invention, the pillar frame 200 includes a plurality of rotatable divided frames, which may reduce the space occupied by the pillar frame 200 in the direction parallel to the ground in the second state, which may be advantageous for realizing the folding state of the pillar frame 200.

[0048] For example, a plurality of pillar frames 200 may be provided to stably support the support frame 100, and in the relationship between the length of the support frame 100 and the length of the pillar frame 200, when the length of the pillar frame 200 exceeds a certain level, contact, i.e., interference, may occur between the plurality of pillar frames 200 as they rotate to reach the second state.

[0049] Furthermore, if at least a portion of the pillar frame 200 is rotated away from the support frame 100 to eliminate interference between the pillar frames 200 as described above, the pillar frame 200 may increase the area consumed by the scaffolding device 1 on the ground in the second state, thereby reducing storage efficiency.

[0050] However, in one embodiment of the present invention, the pillar frame 200 includes a plurality of divided frames that can rotate freely relative to each other, and in the second state in which the pillar frame 200 is rotated side by side on the ground, a stacked configuration can be formed between the divided frames so that the length of the pillar frame 200 is divided, thereby effectively suppressing interference and increase in area caused by the pillar frame 200.

[0051] Meanwhile, the pillar frame 200 may include the above-mentioned first separate frame 201 and second separate frame 202. The first separate frame 201 may be connected to the support frame 100 via the upper hinge shaft 251. The second separate frame 202 may be connected to the first separate frame 201 via a separate hinge shaft 252 extending parallel to the upper hinge shaft 251.

[0052] 7 shows a hinge unit 50 for rotational connection between components in a folding scaffolding device 1 according to one embodiment of the present invention. The hinge unit 50 may include a hinge bracket 52 that is coupled and fixed to the frame.

[0053] The hinge bracket 52 may be connected to the frame by various methods such as a mold-fitting method, a bolt method, a hook method, etc., and may be connected and fixed to a beam included in any one of the frames. The hinge unit 50 may be defined to include at least a pair of hinge brackets 52 and a hinge connecting member 55 that rotatably connects the pair of hinge brackets 52. The hinge connecting member 55 may be made of a flexible material that is variable in length, i.e., bendable.

[0054] The hinge connecting member 55 may be bent so that its length can be changed while its length is fixed. For example, the hinge connecting member 55 may be made of a steel fiber material, a carbon fiber material, or the like, which has excellent tensile strength and flexibility.

[0055] The hinge unit 50 may further include a hinge cover 57 for protecting the hinge connecting member 55 connected to the hinge bracket 52 from the outside and maintaining the connected state. The hinge cover 57 may be connected to the hinge bracket 52 to cover a portion of the hinge connecting member 55 located above the hinge bracket 52.

[0056] 8 and 9 show how a pair of beams or a pair of frames connected via the hinge unit 50 rotate relative to one another. Fig. 8 shows an unfolded state in which the pair of frames rotate away from one another, and Fig. 9 shows a folded state in which the pair of frames rotate toward one another, or one state in the process of folding.

[0057] The hinge unit 50 has a pair of hinge brackets 52 that can be connected and fixed to different frames and positioned adjacent to or facing each other. The hinge brackets 52 connected via the hinge connecting member 55 can rotate relative to each other.

[0058] The hinge axis of the hinge unit 50 can be identified by structural analysis of the hinge brackets 52 connected by the hinge connecting member 55. For example, in one embodiment of the present invention, the hinge axis can extend to intersect or be perpendicular to the alignment direction of the pair of hinge brackets 52.

[0059] However, in the present invention, the structure of the hinge unit 50 for rotatably connecting the frames is not necessarily limited to the above, and various structures of the hinge unit 50 that can rotatably connect multiple frames to each other may be applied.

[0060] Meanwhile, Figures 4 to 6 show front views of the folding scaffolding device 1 being converted from a first state to a second state. Figure 4 shows the scaffolding device 1 in the first state, which is the state intended by design to stably support an object, Figure 5 shows the column frame 200 being rotated to convert the scaffolding device 1 in the first state to the second state, and Figure 6 shows the scaffolding device 1 in the second state, which has the minimum volume intended by design for storage, etc.

[0061] As described above, the first separate frame 201 may be connected to the support frame 100 via the upper hinge shaft 251. The upper hinge shaft 251 may be interpreted as an object that rotatably connects the column frame 200 and the support frame 100.

[0062] One end of the first separate frame 201 may be connected to the support frame 100 via an upper hinge shaft 251, and the other end may be connected to the second separate frame 202 via a split hinge shaft 252. In other words, the second separate frame 202 may be connected to the first separate frame 201 via the split hinge shaft 252.

[0063] The first divided frame 201 and the second divided frame 202 can be rotated so that the length direction D2 faces the ground in the first state and is aligned with the ground in the second state. In the first state, the length direction D2 of both the first and second divided frames 201 and 202 can be directed toward the ground or perpendicular to the ground, so that the length of the column frame 200 can be interpreted as the sum of the lengths of the first and second divided frames 201 and 202.

[0064] The first and second separate frames 201 and 202 may be aligned in a first state such that their longitudinal directions D2 are aligned. The first and second separate frames 201 and 202 may each include the plurality of column parts and the column cross section 230.

[0065] In one embodiment of the present invention, any one frame may include at least one or more parts, and any one part may include at least one or more beams. A detailed description of the multiple column parts and column cross sections 203 will be provided later.

[0066] Meanwhile, in the second state, the divided frames may be arranged so as not to deviate between both ends of the support frame 100 based on the length direction D1 of the support frame 100. Figure 6 shows the pillar frame 200 folded between both ends of the support frame 100, i.e., a plurality of divided frames.

[0067] In detail, in one embodiment of the present invention, in the process of converting the pillar frame 200 from the first state to the second state, the plurality of division frames can be rotated so as not to deviate from both ends of the longitudinal direction D1 of the support frame 100.

[0068] For example, in one embodiment of the present invention, a plurality of pillar frames 200 may be provided and may be arranged on the peripheral side of the support frame 100. The pillar frames 200 may be arranged at both ends of the support frame 100 based on the length direction D1 of the support frame 100.

[0069] In the process of converting from the first state to the second state, the first divided frame 201, one end of which is connected to the support frame 100 via the upper hinge shaft 251, can rotate so that the other end faces the center of the support frame 100.

[0070] The second separate frame 202, one end of which is connected to the first separate frame 201 via a split hinge shaft 252, can be rotated such that the other end is moved away from the center of the support frame 100. Accordingly, the pillar frame 200 can be rotated such that the split hinge shaft 252 moves toward the support frame 100 during the process of converting from the first state to the second state.

[0071] In one embodiment of the present invention, the pillar frame 200 may be configured such that adjacent pairs of the plurality of divided frames are rotatably connected via a divided hinge shaft 252, and the plurality of divided frames may be converted into the second state by rotating in the first state so that the divided hinge shaft 252 moves toward the support frame 100.

[0072] In the process of converting from the first state to the second state, the split hinge shaft 252 may be moved closer to the center of the support frame 100 . One end of the first divided frame 201 is rotatably connected to the support frame 100, and one end of the second divided frame 202 is rotatably connected to the other end of the first divided frame 201, and in the process of converting from the first state to the second state, the other end of the first divided frame 201 and the one end of the second divided frame 202 can be rotated to approach the support frame 100.

[0073] Meanwhile, the first divided frame 201 and the second divided frame 202 may have approximately the same length. Alternatively, the length of the first divided frame 201 may be greater than or equal to the length of the second divided frame 202. As a result, the second divided frame 202 extending from the other end of the first divided frame 201 may not deviate from both ends of the support frame 100 in the second state.

[0074] In one embodiment of the present invention, the pillar frame 200 can be converted from a first state to a second state to minimize the height of the support frame 100, and in the second state, the pillar frame 200 or multiple divided frames are folded so that they do not deviate between both ends of the support frame 100, i.e., so that the required area on the ground does not increase based on the length direction D1 of the support frame 100, which is advantageous because there is no need to secure additional storage space based on the length direction D1 of the support frame 100 during the process of converting the scaffolding device 1 from the first state to the second state.

[0075] The divided frames converted into the second state by rotating the length direction D2 in line with the ground may be stacked under the support frame 100. The divided frames of the column frame 200 for supporting the support frame 100 on the ground may be rotated in line with the ground, thereby realizing the design minimum height H3 of the support frame 100.

[0076] Meanwhile, the folding scaffolding device 1 according to one embodiment of the present invention may include a bottom frame 300. The bottom frame 300 may be disposed below the column frame 200. The bottom frame 300 may be located on the ground or on another structure located on the ground.

[0077] The bottom frame 300 may be considered as the final configuration to which a load is transmitted in the folding scaffolding device 1 according to one embodiment of the present invention. The load of an object may be transmitted to the bottom frame 300 via the support frame 100 and the column frame 200. The bottom frame 300 may be supported by the ground or a structure on the ground.

[0078] The column frame 200 may be rotatably connected to the support frame 100 via an upper hinge shaft 251 and rotatably connected to the bottom frame 300 via a lower hinge shaft 253 . The plurality of divided frames may include a first divided frame 201 connected to the support frame 100 via the upper hinge shaft 251, and a second divided frame 202 connected to the first divided frame 201 via the divided hinge shaft 252 and connected to the bottom frame 300 via the lower hinge shaft 253. The second divided frame 202 may be rotatably connected to the bottom frame 300 via the lower hinge shaft 253.

[0079] The folding scaffolding device 1 according to an embodiment of the present invention may have a symmetrical upper and lower structure. For example, the scaffolding device 1 may have a symmetrical structure in the upper and lower parts about a split hinge axis 252 provided between the first split frame 201 and the second split frame 202 on the column frame 200.

[0080] The support frame 100 and the bottom frame 300 may have substantially the same structure, but may be inverted upside down around the split hinge axis 252. That is, the bottom frame 300 may be in the form of the support frame 100 turned upside down and placed on the ground. A pair of pillar frames 200 disposed at both ends of the support frame 100 may both be rotatably connected to the bottom frame 300.

[0081] The connection structure between the first separate frame 201 and the support frame 100 may be the same as the connection structure between the second separate frame 202 and the bottom frame 300. The above-mentioned upper hinge shaft 251 may correspond to the lower hinge shaft 253. Therefore, the folding structure realized by the first separate frame 201 and the support frame 100 may be the same as the folding structure realized by the second separate frame 202 and the bottom frame 300.

[0082] Furthermore, the folding scaffolding device 1 according to an embodiment of the present invention may be symmetrical on one side and the other side with respect to the length direction D1 of the support frame 100. For example, the scaffolding device 1 may have a symmetrical structure with respect to an imaginary line that passes through the center of the support frame 100 and is perpendicular to the ground.

[0083] The plurality of pillar frames 200 may have the same structure, and may be inverted left and right with respect to an imaginary line passing through the center of the support frame 100 . The connection structure of any one of the plurality of column frames 200 to the support frame 100 and the bottom frame may be the same as the connection structure of another one of the plurality of column frames 200. Thus, the folding structure realized by any one of the column frames 200 may be the same as the folding structure realized by another one of the column frames 200.

[0084] In the first state, the longitudinal direction D2 of the column frame 200 may be approximately perpendicular to the ground, and the column frame 200 may support the support frame 100 relative to the bottom frame 300 between the bottom frame 300 and the support frame 100.

[0085] The column frame 200 may define a column cross section 230 aligned with the ground, and may be connected to the support frame 100 and the bottom frame 300 in a surface unit to form a stable support structure. In a second state in which the first segment frame 201 is rotated relative to the support frame 100 and the second segment frame 202 is rotated relative to the bottom frame 300 from the first state, the longitudinal direction D2 of the first segment frame 201 and the second segment frame 202 can be aligned with the ground, aligned with the longitudinal direction D1 of the support frame 100, and aligned with the longitudinal direction of the bottom frame 300, respectively.

[0086] In the process of converting from the first state to the second state, the height H of the support frame 100 may decrease, and the height in the second state may be the minimum height H3 allowed by design. In the second state, the multiple split frames may be stored between the support frame 100 and the bottom frame 300, and the distance between the multiple split hinge axes 252 provided on each of the multiple column frames 200 may be minimized.

[0087] Meanwhile, the support frame 100 may include a space-forming portion 140 extending toward the ground. The support frame 100 may include a main support part 111 that defines an upper surface on which an object is placed, and the space-forming portion 140 may extend downward from the main support part 111.

[0088] The bottom frame 300 may include the space forming portion 140 corresponding to the support frame 100. In this case, the support frame 100 and the space forming portion 140 of the bottom frame 300 may be positioned vertically to the ground. Therefore, in the second state, the space forming portion 140 of the support frame 100 is seated on the space forming portion 140 of the bottom frame 300, and a minimum height H3 for storing the pillar frame 200 between the support frame 100 and the bottom frame 300 can be secured.

[0089] That is, in one embodiment of the present invention, a storage space for storing the divided frame of the rotated pillar frame 200 can be secured between the support frame 100 and the bottom frame 300, and a folded state with a minimized height can be stably realized. A detailed description of the structure of the support frame 100 in relation to the space forming portion 140 will be given later.

[0090] Meanwhile, in one embodiment of the present invention, the first separate frame 201 may be formed such that the axis connection line DR connecting the upper hinge axis 251 and the separate hinge axis 252 is inclined in the direction D2 of the first separate frame 201.

[0091] Therefore, the foldable scaffolding device 1 according to an embodiment of the present invention may have an increasing section in which the height H of the support frame 100 increases during the process of converting from the first state to the second state. 15 to 18 may be referred to in order to explain the increased section. Figures 15 to 18 show a simplified frame structure of a folding scaffolding device 1 according to one embodiment of the present invention. In the frame structure, the column frame 200 is represented as a single undivided frame or beam.

[0092] 15 to 18 show a process in which a frame structure corresponding to the foldable scaffolding device 1 according to an embodiment of the present invention is transformed from a first state to a second state. 15, in the frame structure, the column frame 200 may be connected to the support frame 100 via an upper hinge shaft 251 and to the bottom frame 300 via a lower hinge shaft 253. In the first state, the length direction D2 of the column frame 200 may be approximately perpendicular to the ground.

[0093] The column frame 200 may realize a stable support structure by supporting the load through surface-by-surface contact with the support frame 100 and the bottom frame 300. Meanwhile, in the first state, the length direction D1 of the support frame 100 and the bottom frame 300 may be approximately aligned with the ground.

[0094] The upper hinge axis 251 of the column frame 200 may be positioned to deviate from an imaginary line extending perpendicularly from the lower hinge axis to the ground. As a result, imaginary axis connecting lines DR extending perpendicularly to the upper hinge axis 251 and the lower hinge axis 253, respectively, may be defined to be inclined with respect to the longitudinal direction D2 of the column frame 200.

[0095] The frame structure shown in FIG. 15 is in a first state deployed to support an object, and a height H of the support frame 100 corresponding to a height H1 in the first state is shown on the drawing. On the other hand, FIG. 16 shows the frame structure of FIG. 15 in a state where the column frame 200 is rotated and the support frame 100 reaches the maximum height H2 allowed by the design.

[0096] In particular, in one embodiment of the present invention, the column frame 200 can be rotated from a first state to a second state, and the rotation process from the first state to the second state can include an increasing section and a decreasing section. The increasing section may be defined as a section in which the column frame 200 rotates to increase the height H of the support frame 100. The increasing section may be defined as a rotation section from the first state to a state in which the axis connecting line DR of the column frame 200 is perpendicular to the ground.

[0097] The axis connecting line DR may rotate around the upper hinge axis 251 or the lower hinge axis 253 during the rotation of the column frame 200. The upper hinge axis 251 and the lower hinge axis 253 may correspond to contact points between the column frame 200 and the support frame 100 and the bottom frame 300, respectively.

[0098] In the first state for supporting an object, such as the first state, the distance between the support frame 100 and the bottom frame 300 may correspond to the length of the pillar frame 200, but when the pillar frame 200 is rotated from the first state, the axis connection line DR corresponding to the connection line between the support frame 100 and the bottom frame 300 may gradually rotate perpendicular to the ground.

[0099] As described above, in the first state, the axis connecting line DR may extend at an incline to the ground, and the longitudinal direction DR2 of the column frame 200 may be perpendicular to the ground, so that the length of the axis connecting line DR may be longer than the length of the column frame 200.

[0100] In the first state, the upper end of the pillar frame 200 and the upper end of the axis connecting line DR may be located at the same height, so the distance between the bottom frame 300 and the support frame 100, i.e., the height of the support frame 100, may be interpreted as corresponding to the length of the pillar frame 200. However, when the pillar frame 200 starts to rotate in the first state, the axis connecting line DR, which is defined to be longer than the length of the pillar frame 200, gradually rotates perpendicular to the ground, so the height of the support frame 100 may change corresponding to the height of the upper end of the axis connecting line DR.

[0101] As a result, in the increasing section where the pillar frame 200 is rotated from the first state and the axis connecting line DR becomes perpendicular to the ground, a phenomenon may occur in which the height H of the support frame 100 gradually increases. 16, the distance between the bottom frame 300 and the support frame 100 may correspond to the length of the shaft connecting line DR. The height H of the support frame 100 may be greater than the height H1 in the first state. The height of the support frame 100 may be the maximum height H2 allowed by the design.

[0102] In order to increase the height H of the support frame 100 depending on the length of the axis connection line DR in the increasing section, based on the rotation process of converting from the first state to the second state, the axis connection line DR may be inclined from the lower hinge axis 253 to the opposite side of the rotation direction with respect to the length direction D2 of the pillar frame 200.

[0103] In addition, when the support frame 100 is extended in the first direction X and moves along the first direction X to decrease in height during the process of converting from the first state to the second state, the upper hinge shaft 251 may be disposed closer to the center of the support frame 100 than the upper hinge shaft 253 based on the first direction X.

[0104] In one embodiment of the present invention, the rotation resistance of the column frame 200 against lateral pressure is increased by the increasing section progressing from the first state, so that structural maintenance performance can be improved. For example, the support frame 100 goes through an increasing section in which the height H increases during the process of converting from the first state to the second state, and as a result, the load of the object placed on the support frame 100 acts as a resistance force against the column frame 200 rotating to the second state, i.e., a structural maintenance force.

[0105] Therefore, even if an unintended lateral load occurs while work is being performed on the support frame 100 in the first state, the load of the object acts as a resistance force against rotation, effectively preventing accidents that may occur when the frame structure is unintentionally converted to the second state.

[0106] Furthermore, the first state can be maintained without the need for a separate stopper or fixing structure for maintaining the pillar frame 200 in the first state, thereby eliminating the need for additional unnecessary components. FIG. 17 shows the frame structure being transformed from the end of the increasing section shown in FIG. 16 towards the second state.

[0107] The rotation of the column frame 200 after passing the end point of the increasing section may gradually decrease without increasing the upper end of the axis connection line DR, i.e., the height of the upper hinge axis 251. During this process, the load of the support frame 100, etc., acts on the rotational force of the column frame 200, and may induce a transformation to the second state.

[0108] Meanwhile, FIG. 18 shows the frame structure in which the column frame 200 is completely rotated from the first state to the second state. In the second state, the length directions of the bottom frame 300, the column frame 200, and the support frame 100 may be aligned with each other and may be aligned with the ground, respectively, so that the height H of the support frame 100 in the second state may be the minimum height H3 allowed by the design.

[0109] The frame structure shown in Figures 15 to 18 is a single frame type in which the column frame 200 does not include a divided frame, but the characteristics of the increase section and decrease section described above can also be applied to an embodiment of the present invention that includes a divided frame.

[0110] For example, in a folding scaffolding device 1 according to one embodiment of the present invention, the axial connection line DR of each divided frame may be formed at an angle to its respective longitudinal direction D2, and Figures 4 to 6 show the axial connection line DR defined by the divided frame.

[0111] 4 to 6, the first separate frame 201 may have an axis connection line DR connecting the upper hinge axis 251 and the separate hinge axis 252, and the axis connection line DR of the first separate frame 201 may extend at an angle to the longitudinal direction D2 of the first separate frame 201.

[0112] The second divided frame 202 may have a shaft connecting line DR connecting the divided hinge shaft 252 and the lower hinge shaft 253, and the shaft connecting line DR of the second divided frame 202 may extend at an angle to the length direction D2 of the second divided frame 202.

[0113] As a result, in the above-mentioned increasing section, the first divided frame 201 rotates relative to the second divided frame 202, so that the shaft connecting line DR can be gradually rotated perpendicular to the ground, and the second divided frame 202 rotates relative to the bottom frame 300, so that the shaft connecting line DR can be gradually rotated perpendicular to the ground.

[0114] At the end point of the increasing section, the axis connecting line DR of the first divided frame 201 and the axis connecting line DR of the second divided frame 202 may be positioned on the same line perpendicular to the ground, and in this state, the distance between the bottom frame 300 and the support frame 100, i.e., the height H of the support frame 100, may be the maximum height H2 allowed by the design.

[0115] After the end of the increasing section, the rotation of the first divided frame 201 and the second divided frame 202 increases the inclination angle with respect to each axis connection line DR and the ground, so that the height H of the support frame 100 may decrease, and in the second state, the height H of the support frame 100 may become the minimum height H3 intended by design.

[0116] The support frame 100 may extend in a first direction X aligned with the ground, and the upper hinge shaft 251 may be disposed closer to the center of the support frame 100 than the split hinge shafts 252 based on the first direction X.

[0117] However, as will be described later, in one embodiment of the present invention, in the process of converting from the first state to the second state, the support section 130 and the column section 230 may undergo deformation in which the area continuously decreases as the column frame 200 begins to rotate.

[0118] The reduction in the height of the support section 130 and the column section 230 themselves has the effect of reducing the height H of the support frame 100 even in the increasing section. However, depending on the relative lengths of the support interlocking part and the column interlocking part described below and the length of the axis connecting line DR, the increase in the height of the support frame 100 due to the rotation of the axis connecting line DR becomes greater than the decrease in the height of the support frame 100 due to the rotation of the support interlocking part and the column interlocking part, and the increase in the height of the support frame 100 in the increasing section described above may also occur.

[0119] Meanwhile, FIG. 10 shows a support frame 100 of a folding scaffolding device 1 according to one embodiment of the present invention. In one embodiment of the present invention, the support frame 100 may include multiple support parts. As mentioned above, in one embodiment of the present invention, the frame may include at least one part, and the part may include at least one beam.

[0120] The plurality of support parts may be rotatably connected to each other via different support hinge shafts 120. The plurality of support parts may form a connection relationship via the plurality of support hinge shafts 120. Therefore, in one embodiment of the present invention, multiple parts provided on one frame may be classified based on the hinge unit 50. In other words, the classification of multiple parts may be defined based on whether or not they have a rotatable connection relationship with each other.

[0121] The plurality of support parts may each extend along a first direction X aligned with the ground, that is, the plurality of support parts may extend side by side with each other. The plurality of support parts may include a main support part 111 and an interlocking support part 112 that is rotatably coupled to the main support part 111 and rotates in conjunction with the column frame 200 .

[0122] The main support part 111 may be a rotational reference for the interlocking support part 112, and the main support part 111 may be a part that does not have rotational displacement during the transition from the first state to the second state. The main support part 111 may define the upper surface of the support frame 100 and the scaffolding device 1, and may define a surface for supporting an object. Although Fig. 10 shows four beams forming the main support part 111 having a square cross-section, the cross-sectional shape of the main support part 111 and the number of beams may vary.

[0123] The interlocking support part 112 may be rotatably connected to the main support part 111. The interlocking support part 112 may be connected to the main support part 111 via a support hinge shaft 120. The extension direction of the support hinge shaft 120 may vary. For example, the support hinge shaft 120 may extend in the first direction X together with the main support part 111 and the interlocking support part 112.

[0124] The interlocking support part 112 may rotate in conjunction with the column frame 200. For example, when the column frame 200 is transformed between the first state and the second state, the interlocking support part 112 may rotate around the support hinge axis 120 in conjunction with the rotation of the first divided frame 201 around the upper hinge axis 251.

[0125] The interlocking support part 112 may be interlocked with the column frame 200 in various ways. For example, the interlocking support part 112 may be rotated by physical interference with the column frame 200 or may be rotated via an interlocking joint 400, which will be described later.

[0126] In one embodiment of the present invention, the support frame 100 may include at least one interlocking support part 112, and if a plurality of interlocking support parts 112 are provided, at least one of the plurality of interlocking support parts 112 may include a support inclined part 115 to which an interlocking joint 400 is coupled. The support inclined part 115 and the interlocking joint 400 will be described in detail below.

[0127] An operator can control the conversion rate of the folding scaffolding device 1 according to an embodiment of the present invention via the interlocking support part 112. In detail, as described above, an increase in the height H of the support frame 100 may occur in a part of the process in which the pillar frame 200 according to an embodiment of the present invention is rotated from the first state to the second state.

[0128] In the rotation section where the height H of the support frame 100 increases, the load of the object placed on the support frame 100 and / or the support frame 100 itself may act as a resistance to the increase in the height of the support frame 100 or the rotation of the column frame 200.

[0129] That is, in the process of transitioning from the first state to the second state, an external force may be required to counteract the load of the object and the support frame 100. At this time, the worker can perform the conversion process from the first state to the second state by directly lifting the support frame 100, by providing a rotational force to the column frame 200, or by providing a rotational force to the interlocking support part 112 that rotates together with the column frame 200.

[0130] In one embodiment of the present invention, an operator can easily increase the height H during the transition process from the first state to the second state by grasping and rotating the interlocking support part 112 provided on the support frame 100.

[0131] The interlocking support parts 112 may be rotatably provided on both sides of the support part based on the second direction Y, and the multiple support parts may include an inner support part 113 facing the main support part 111 and rotatably connected to the interlocking support part 112.

[0132] The main support part 111 and the interlocking support part 112 extend along a first direction X aligned with the ground, and the interlocking support part 112 may be connected to the main support part 111 via a support hinge shaft 120 extending along the first direction X.

[0133] Specifically, the support frame 100 includes a plurality of support parts, namely, a main support part 111, an interlocking support part 112, and an inner support part 113, which may all extend in a first direction X aligned with the ground. The extension direction of the plurality of support parts can be aligned with the first direction X not only in the first state but also in the second state.

[0134] In the present invention, the second direction Y may be defined as a direction parallel to the ground and substantially perpendicular to the first direction X. That is, the first direction X and the second direction Y may be defined as being perpendicular to each other on a plane parallel to the ground.

[0135] The interlocking support parts 112 may be provided in pair, and may be provided at both ends of the main support part 111 in the second direction Y. The pair of interlocking support parts 112 may be rotatably connected to the both ends of the main support part 111 via different support hinge shafts 120.

[0136] Meanwhile, the inner support part 113 may be disposed to face the main support part 111. One end of the interlocking support part 112 may be connected to the main support part 111, and the other end may be connected to the inner support part 113.

[0137] The inner support part 113 may be rotatably connected to the interlocking support part 112. That is, the support frame 100 may include a plurality of support hinge shafts 120, and the inner support part 113 may be connected to the interlocking support part 112 via any one of the plurality of support hinge shafts 120.

[0138] The support frame 100 may include a support section 130 having a plurality of sides respectively defined by the plurality of support parts. The support section 130 may include multiple sides, and each side may be defined by a different support part.

[0139] For example, as shown in FIG. 10 , the support cross section 130 may be a plane perpendicular to the ground, with an upper side defined by the main support part 111, both sides defined by a pair of interlocking support parts 112, and a lower side defined by the inner support part 113.

[0140] The space forming portions 140 may be provided on both sides of the support frame 100 in the first direction X. The space forming portions 140 may extend from both ends of the support frame 100 in the first direction X toward the bottom frame 300.

[0141] The space forming portion 140 provided in the main support part 111 can secure space for storing the first separate frame 201 together with the interlocking support part 112 and the inner support part 113 in the second state based on the direction Z perpendicular to the ground.

[0142] Meanwhile, Figure 11 shows a pillar frame 200 of a folding scaffolding device 1 according to one embodiment of the present invention. Figure 11 shows a first divided frame 201 of the pillar frame 200, but the second divided frame 202 has the same structure.

[0143] In one embodiment of the present invention, the column frame 200 may include a plurality of column parts. When the column frame 200 includes a first division frame 201 and a second division frame 202, the first division frame 201 and the second division frame 202 may each include the column part.

[0144] The plurality of post parts may be rotatably connected to each other via different post hinge shafts 220. The plurality of post parts may be rotatably connected to each other via the plurality of post hinge shafts 220. Each of the plurality of column parts may extend in a direction Z perpendicular to the ground in a first state, and may extend along a first direction X in a second state. That is, the plurality of column parts may extend side by side, and the column frame 200 may be rotated around the upper hinge axis 251 so that the length directions of the plurality of column parts are aligned with the first direction X or perpendicular to the ground.

[0145] The plurality of pillar parts may include a main pillar part 211 and an interlocking pillar part 212 rotatably coupled to the main pillar part 211 and interlocking with the interlocking support part 112 to rotate. For example, the rotation of the column frame 200 around the upper hinge axis 251, the rotation of the interlocking column part 212 around the column hinge axis 220, and the rotation of the interlocking support part 112 around the support hinge axis 120 can occur in conjunction with each other.

[0146] The main column part 211 may be a rotational reference for the linked column part 212. The main column part 212 may define at least a portion of the outer surface of the column frame 200 and may be a portion of the path through which the load of the object and the support frame 100 is transmitted.

[0147] Although FIG. 11 shows four beams forming the main pillar part 211 having a square cross section, the cross section shape of the main pillar part 211 and the number of beams may vary. The interlocking post part 212 may be rotatably connected to the main post part 211. The interlocking post part 212 may be connected to the main post part 211 via a post hinge shaft 220. The extension direction of the post hinge shaft 220 may vary. For example, the post hinge shaft 220 may extend in a direction in which the main post part 211 and the interlocking post part 212 are aligned.

[0148] The interlocking column part 212 may rotate about the column hinge axis 220 in conjunction with the interlocking support part 112. For example, in the process of the column frame 200 being transformed from the first state to the second state, the first divided frame 201 may rotate about the upper hinge axis 251, the interlocking support part 112 may rotate about the support hinge axis 120 in conjunction with the rotation of the first divided frame 201, and the interlocking column part 212 may rotate about the column hinge axis 220 in conjunction with the rotation of the interlocking support part 112.

[0149] The interlocking column part 212 may be interlocked with the interlocking support part 112 in various ways. For example, the interlocking column part 212 may rotate by physical interference with the interlocking support part 112 or may rotate via the interlocking joint 400 described above. The interlocking column part 212 may include a column inclined portion 215 to which the interlocking joint 400 is coupled.

[0150] The interlocking pillar parts 212 may be provided in pair, and may be provided at both ends of the main pillar part 211 in the second direction Y. The pair of interlocking pillar parts 212 may be rotatably connected to the both ends of the main pillar part 211 via different pillar hinge shafts 220.

[0151] Meanwhile, the inner pillar part 213 may be disposed to face the main pillar part 211. One end of the interlocking pillar part 212 may be connected to the main pillar part 211, and the other end may be connected to the inner pillar part 213.

[0152] The inner column part 213 may be rotatably connected to the interlocking column part 212. That is, the column frame 200 may include a plurality of column hinge shafts 220, and the inner column part 213 may be connected to the interlocking column part 212 via any one of the plurality of column hinge shafts 220.

[0153] The column frame 200, the first divided frame 201, or the second divided frame 202 may include a column cross section 230 having a plurality of sides defined by the plurality of column parts. The column cross section 230 may include a number of sides, and each side may be defined by a different column part.

[0154] For example, as shown in FIG. 11, in a first state, the column cross section 230 may be a surface aligned with the ground, with each side defined by a main column part 211, a pair of interlocking column parts 212, and an inner column part 213.

[0155] Meanwhile, FIGS. 12 to 14 show the first divided frame 201 of the support frame 100 and the column frame 200, which are transformed from the first state to the second state as the shapes of the support section 130 and the column section 230 are deformed.

[0156] Figure 12 shows a support frame 100 and a column frame 200 having a roughly rectangular support cross section 130 and a column cross section 230 in a first state, Figure 13 shows a support frame 100 and a column frame 200 in a first state in which the column frame 200 has been rotated and the support cross section 130 and the column cross section 230 have been deformed into a roughly parallelogram shape, and Figure 14 shows a support frame 100 and a column frame 200 in a second state in which the support cross section 130 and the column cross section 230 have been deformed so that each side is extended in one direction.

[0157] As shown in Figures 12 to 14, in one embodiment of the present invention, the support frame 100 and the column frame 200 rotate around the upper hinge axis 251, and the shapes of the support section 130 and the column section 230 can be deformed so that the heights of the support section 130 and the column section 230 in the second state are minimized.

[0158] In detail, in one embodiment of the present invention, the support frame 100 may include a plurality of support parts, which may include a main support part 111 and an interlocking support part 112 rotatably connected to the main support part 111.

[0159] One end of the interlocking support part 112 may be connected to the main support part 111 via a support hinge shaft 120. The interlocking support part 112 may rotate around the support hinge shaft 120, and the other end may be located below the support hinge shaft 120 in a first state, and the other end may be located in a second direction Y relative to the support hinge shaft 120 in a second state.

[0160] That is, the interlocking support part 112 may be positioned below the main support part 111 in the first state, and may be positioned in a direction parallel to the ground relative to the main support part 111 in the second state. A plane defined by the beams provided in the interlocking support part 112 may be perpendicular to the ground in the first state, and may be aligned with the ground in the second state.

[0161] The interlocking support part 112 may be located below the main support part 111 in the first state, and may be aligned with the main support part 111 in a direction parallel to the ground in the second state. Meanwhile, in the second state, a portion of the pillar frame 200 may protrude from the support frame 100 in a direction intercepting the longitudinal direction D1 of the support frame 100. That is, the shape of the pillar cross section 230 may change so that a portion of the pillar frame 200 protrudes from the support frame 100 along the second direction Y.

[0162] That is, in the second state, a portion of each of the plurality of divided frames may protrude from the main supporting part 111 in a direction that blocks the length direction D1 of the supporting frame 100. In the process of converting from the first state to the second state, at least a portion of the pillar frame 200 together with the interlocking support part 112 may protrude from the main support part 111 in a direction parallel to the ground.

[0163] The interlocking pillar part 212 may be positioned in the first direction X relative to the main pillar part 211 in the first state, and may be positioned in the second direction Y relative to the main pillar part 211 in the second state. In the second state, the interlocking support part 112 is positioned in a direction parallel to the ground relative to the main pillar part 111, and the interlocking pillar part 212 is positioned in a direction parallel to the ground relative to the main pillar part 211, so that the height of the top end of the support frame 100 relative to the ground can be minimized.

[0164] The rotational relationship between the support part and the column part that changes the shapes of the support section 130 and the column section 230 can be understood in the same way as the folding and unfolding relationship of the frame structure shown in Figures 15 to 18 described above. 15 to 18, the upper frame may correspond to the main support part 111 or the main column part 211. The two side frames may correspond to the interlocking support part 112 or the interlocking column part 212. The lower frame may correspond to the inner support part 113 or the inner column part 213.

[0165] In the first state, the pair of interlocking support parts 112 may be in a state of extending approximately perpendicular to the main support part 111 or the inner support part 113. In the process of converting from the first state to the second state, the interlocking support parts 112 may be rotated relative to the inner support part 113, and the shape of the support cross section 130 may change from an approximately rectangular cross section to a parallelogram shape.

[0166] In the process of changing the shape of the support section 130, the area of ​​the support section 130 may decrease in conjunction with the column frame 200 in the process of converting from the first state to the second state. Any one of the plurality of sides of the support section 130 may be defined by the interlocking support part 112. In other words, the support section 130 may be deformed such that the height of the support section 130 decreases as the interlocking support part 112 rotates in conjunction with the rotation of the column frame 200.

[0167] The movement of the multiple sides that rotate relative to each other in the support cross section 130 may be a four-bar link movement. In one embodiment of the present invention, the four-bar link movement refers to a movement in which, when opposing sides have the same length and one side rotates relative to the adjacent side, the pair of sides rotates to change their length direction, and the remaining pair of sides maintains their length direction but decreases their separation distance.

[0168] 15 to 18 show the process in which a rectangle having four sides decreases in height through four-bar linkage motion. Accordingly, in the process of converting from the first state to the second state, the support section 130 may be deformed by a four-bar linkage movement such that a pair of opposing sides of the plurality of sides approach each other in a lined-up state.

[0169] A pair of rotating sides of the support cross section 130 may correspond to the interlocking support part 112, and a pair of sides with a constant length may correspond to the main support part 111 and the inner support part 113. In relation to this, when a pair of interlocking support parts 112 are provided as described above, the pair of interlocking support parts 112 may have the same rotation direction as each other as shown in FIGS.

[0170] That is, one of the pair of interlocking support parts 112 may be positioned to protrude from the main support part 111 in the second direction Y in the second state, and the other may be positioned above the main support part 111.

[0171] Such variations in the support section 130 can be applied to the column section 230 as well. For example, the upper frame of the frame structure of Figures 15 to 18 may correspond to the inner column part 213, the side frames may correspond to the interlocking column parts 212, and the lower frame may correspond to the main column part 211.

[0172] Therefore, in the process of converting from the first state to the second state, the column cross section 230 can be deformed to reduce its area, just like the support cross section 130. The plurality of column parts are rotatably connected to each other, and the column cross section 230 can change its shape due to the rotation between the plurality of column parts, and the rotation of the interlocking column part 212 relative to the main column part 211 can also change its shape.

[0173] In the process of converting from the first state to the second state, the column cross section 230 may change so that the distance between a pair of opposing sides among the multiple sides decreases. For example, the column cross section 230 may change so that the distance between the inner column part 213 and the main column part 211 decreases.

[0174] In the second state, the pair of sides may be arranged vertically relative to the ground. That is, in the second state, the main column part 211 and the inner column part 213 may be arranged in a direction Z perpendicular to the ground, and the distance between them may decrease. That is, the column frame 200 may be deformed in the second state such that the height of the column cross section 230 decreases.

[0175] As with the support section 130, in the process of converting the column section 230 from the first state to the second state, the plurality of sides may be deformed so that the pair of sides approach each other by a four-bar linkage movement. The pair of sides that rotate in the column cross section 230 may correspond to the interlocking column part 212, and the pair of sides that maintain the length direction may correspond to the inner column part 213 and the main column part 211.

[0176] That is, in one embodiment of the present invention, one of the main pillar part 211 and the inner pillar part 213 is connected to the upper hinge shaft 251, and the interlocking pillar part 212 can rotate relative to either one of them to generate the four-bar link movement.

[0177] In this regard, when a pair of interlocking column parts 212 are provided as described above, the pair of interlocking column parts 212 may have the same rotation direction as each other as shown in FIGS. That is, one of the pair of interlocking pillar parts 212 may be positioned to protrude from the main pillar part 211 in the second direction Y in the second state, and the other may be positioned above the main pillar part 211.

[0178] In the process of converting from the first state to the second state, the pillar cross section 230 rotates around the upper hinge axis 251, and the interlocking pillar part 212 rotates around the pillar hinge axis 220, so that the area of ​​the pillar cross section 230 may decrease.

[0179] Meanwhile, FIG. 19 shows the support inclined portion 115 of the support frame 100 and the column inclined portion 215 of the column frame 200, and FIG. 20 shows the interlocking joint 400 connected to the support inclined portion 115 and the column inclined portion 215.

[0180] In one embodiment of the present invention, the interlocking support part 112 and the column frame 200 may be connected via an interlocking joint 400. The interlocking joint 400 rotatably connects the interlocking support part 112 and the column frame 200, and may interlock the interlocking support part 112 with the column frame 200.

[0181] In the interlocking joint 400, the joint axis 410 which is the center of rotation between the interlocking support part 112 and the column frame 200 can be extended in a direction different from the upper hinge axis 251 which is the center of rotation of the column frame 200 relative to the support frame 100.

[0182] In other words, the column frame 200 is connected to the support frame 100 via two axes having different axial directions, whereby rotation of the column frame 200 around the upper hinge axis 251 can cause rotation of the interlocking support part 112 via the interlocking joint 400.

[0183] Specifically, in the first state, the extension directions of the joint axis 410 of the interlocking joint 400 and the upper hinge axis 251 may be in a substantially perpendicular relationship with each other. In other words, unless the joint axis 401 is changed, the column frame 200 cannot rotate around the upper hinge axis 251.

[0184] Based on this physical relationship, the rotational movement of the column frame 200 causes a change in the axial direction of the interlocking joint 400. Since the interlocking joint 400 is connected to the interlocking support part 112, the rotation of the column frame 200 around the upper hinge axis 251 eventually induces the rotation of the interlocking support part 112 around the support hinge axis 120, causing a change in the axial direction of the joint axis 401.

[0185] As described above, in one embodiment of the present invention, the rotation of the pillar frame 200 connected to the support frame 100 via the upper hinge shaft 251 and the interlocking joint 400 having different axial directions forms an interlocking relationship with the interlocking support part 112, and the worker can conveniently generate rotation with the interlocking support part 112 to guide the rotation of the pillar frame 200.

[0186] The interlocking joint 400 may be provided in various types and may be coupled to various positions of the interlocking support part 112 and the column frame 200. For example, the interlocking joint 400 may be coupled to the support inclined part 115 and the column inclined part 215 described above.

[0187] The support inclined portion 115 may be provided on the interlocking support part 112. The extension direction of the support inclined portion 115 may be aligned with the joint axis 401 of the interlocking joint 400. That is, the support inclined portion 115 may have an axial direction different from that of the upper hinge axis 251, as well as the joint axis 401, and may have an axial direction different from that of the support hinge axis 120. In addition, the column hinge axis 220 and the joint axis 401 may have different extension directions from each other so that a change in the column cross section 230 can be induced.

[0188] For example, the support hinge axis 120 may be aligned with the first direction X, the top hinge axis 251 may be aligned with the second direction Y, and the post hinge axis 220 may be perpendicular to the ground. The joint axis 401 may extend obliquely relative to the support hinge axis 120, the top hinge axis 251, and the post hinge axis 220.

[0189] In the first state, the joint axis 401 may extend on an imaginary plane extending along a first direction X and a direction Z perpendicular to the ground, or may extend at an angle relative to the first direction X and the direction Z perpendicular to the ground. In the second state, the joint axis 401 may extend on an imaginary plane extending along the first direction X and the second direction Y, or may extend obliquely in the first direction X and the second direction Y.

[0190] The joint shaft 401 is coupled to the interlocking support part 112, so that the joint shaft 401 can rotate together with the rotation of the interlocking support part 112 relative to the support hinge shaft 120. Axial rotation of the joint shaft 401 can induce rotation of the interlocking support part 112 and the interlocking column part 212 while allowing rotation of the column frame 200 relative to the support frame 100.

[0191] Meanwhile, the column inclined portion 215 may be disposed adjacent to and facing the support inclined portion 115, or may extend parallel to the support inclined portion 115. The column inclined portion 215 may be positioned in various ways on the column frame 200. For example, the column inclined portion 215 may be provided on the interlocking column part 212, and may interlock the rotation of the interlocking support part 112 and the interlocking column part 212.

[0192] Meanwhile, in one embodiment of the present invention, the plurality of pillar parts include a main pillar part 211 and an interlocking pillar part 212 rotatably connected to the main pillar part 211 via a pillar hinge axis 220 perpendicular to the second direction Y, and the interlocking joint 400 can rotatably connect the interlocking pillar part 212 and the interlocking support part 112.

[0193] The support inclined portion 115 may extend at an angle with respect to the first direction X. That is, the support inclined portion 115 may extend at an angle with respect to the length direction of the main support part 111. The tilted pillar portion 215 may be positioned to face the tilted support portion 115 and extend parallel to the tilted support portion 115. The interlocking joint 400 may rotatably connect the tilted support portion 115 and the tilted pillar portion 215.

[0194] Meanwhile, FIG. 21 shows the process of the interlocking joint 400 of FIG. 20 being rotated to convert from the first state to the second state, and FIG. 22 shows the interlocking joint 400 of FIG. 20 completely converted to the second state.

[0195] Referring to Figure 21, as described above, in the first state, rotation of the pillar frame 200 around the upper rotation axis does not occur unless there is a change in the axial direction of the joint axis 401 due to its relationship with the joint axis 401 of the interlocking joint 400.

[0196] In other words, the rotation of the column frame 200 around the upper hinge axis 251 can induce the rotation of the interlocking joint 400 , that is, the rotation of the interlocking support part 112 around the support hinge axis 120 . Rotation of the interlocking support part 112 around the support hinge axis 120 can induce a change in the support cross section 130 due to the four-bar linkage movement described above, and can induce rotation of the interlocking column part 212 connected to the interlocking joint 400 around the column hinge axis 220.

[0197] In other words, depending on the relationship between the interlocking column part 212 and the interlocking support part 112 connected to the interlocking joint 400, the column frame 200, for example, the first separate frame 201, can rotate around the upper hinge axis 251 and also rotate around the column hinge axis 220 relative to the main column part 211.

[0198] Such rotation of the interlocking column part 212 may induce a change in the column cross section 230 due to the four-bar linkage movement described above. In other words, in one embodiment of the present invention, the rotation of the column frame 200 relative to the support frame 100, the rotation of the interlocking support part 112 relative to the main column part 211, the rotation of the interlocking column part 212 relative to the interlocking support part 112, and the rotation of the interlocking column part 212 relative to the main column part 211 may all occur organically and simultaneously. 22 shows the interlocking joint 400 in the second state. In the second state, the interlocking support part 112 may be rotated so as to protrude in the second direction Y relative to the main support part 111, and the interlocking pillar part 212 may be rotated so as to protrude in the second direction Y relative to the main pillar part 211.

[0199] The interlocking support part 112 and the interlocking pillar part 212 may be stacked one on top of the other, and the interlocking joint 400, where the approximate corner of the interlocking support part 112 and the interlocking pillar part 212 is located, may also be located in the second direction Y from the main support part 111.

[0200] In one embodiment of the present invention, the interlocking support part 112 is rotatably connected to the pillar frame 200 via an interlocking joint 400 having an axial direction different from that of the upper hinge axis 251 and the support hinge axis 120, and can rotate around the support hinge axis 120 in conjunction with the pillar frame 200.

[0201] The pillar frame 200 is connected to the support frame 100 through an upper hinge shaft 251, and the joint shaft 401 of the interlocking joint 400 and the upper hinge shaft 251 may extend in different directions.

[0202] The joint shaft 401 of the interlocking joint 400 can rotate axially together with the interlocking support part 112, and can be rotated together with the interlocking support part 112 to face the ground in the first state and be aligned with the ground in the second state.

[0203] At least a part of the column frame 200 , for example, the interlocking column part 212 is interlocked with the interlocking support part 112 via the interlocking joint 400 and can rotate around the upper hinge axis 251 . In the column frame 200, one of the plurality of column parts, for example, the interlocking column part 212, is connected to the interlocking support part 112 via the interlocking joint 400, and the column cross section 230 can change in conjunction with the interlocking support part 112 by rotating around the upper hinge axis 251.

[0204] Meanwhile, the interlocking support part 112 may rotate around the support rotation axis in conjunction with the rotation of the column frame 200 about the upper hinge axis 251. The interlocking column part 212 may rotate around the column hinge axis 220 in conjunction with the rotation of the interlocking support part 112 about the support rotation axis via the interlocking joint 400.

[0205] The interlocking pillar part 212 is connected to the interlocking support part 112 via the interlocking joint 400 and can rotate relative to the main pillar part 211 in conjunction with the interlocking support part 112 . However, in one embodiment of the present invention, the column inclined portion 215 does not necessarily have to be provided in the interlocking column part 212, but any one of the plurality of column parts defining one side of the column cross section 230 includes the column inclined portion 215, and in the process of converting from the first state to the second state, the column cross section 230 may approach each other with a pair of opposing sides lined up due to a four-bar link movement.

[0206] 23 shows an interlocking joint 400 according to an embodiment of the present invention. In the embodiment of the present invention, the interlocking joint 400 may include a first joint body 410, a second joint body 420, and a bending member 430.

[0207] The first joint body 410 may be fixed to the interlocking support part 112, and the second joint body 420 may be fixed to the column frame 200. A bending member 430 may rotatably connect the first joint body 410 and the second joint body 420 in contact with each other.

[0208] The interlocking joint 400 may be provided as a roll contact joint in which the first joint body 410 and the second joint body 420 are wrapped around the bending member 430 .

[0209] More specifically, in one embodiment of the present invention, the first joint body 410 and the second joint body 420 of the interlocking joint 400 may be connected to each other at a constant distance by a bending member 430. The bending member 430 may be made of a flexible material that can be bent while maintaining a constant length.

[0210] The bending member 430 may extend to cross the first joint body 410 and the second joint body 420. For example, as shown in Fig. 23, a plurality of bending members 430 may be provided, and any one bending member 430 may be connected to one side of the first joint body 410 and the other side of the second joint body 420, and another bending member 430 adjacent to any one bending member 430 may be connected to the other side of the first joint body 410 and one side of the first joint body 410, respectively.

[0211] The one side and the other side of the joint body may be defined along the rotation direction of the joint body based on the joint axis. For example, any one of the bending members 430 may be connected to one side of the first joint body 410 located in one direction from the first joint body 410 around the joint axis 401 that is dynamically defined.

[0212] For example, any one of the bending members 430 may be connected to the other side of the second joint body 420 located in the other direction from the second joint body 420 around the joint axis 401 . The distance between the first joint body 410 and the second joint body 420 may be fixed by the length of the bending member 430 .

[0213] In addition, the bending members 430 are provided in multiple pieces, and adjacent pairs of bending members 430 are arranged alternately so that their length directions cross, so that the distance between the first joint body 410 and the second joint body 420 can be maintained despite the rotational movement of the interlocking joint 400 in both directions.

[0214] However, the bending member 430 does not necessarily have to be provided in multiple numbers, and the first joint body 410 and the second joint body 420 can be alternately wrapped around one bending member 430, which can have the same effect as arranging multiple bending members 430.

[0215] The first joint body 410 and the second joint body 420 of the interlocking joint 400 are always in contact with each other in the first state and the second state, so that a load can be transmitted between them. That is, in one embodiment of the present invention, the interlocking joint 400 rotates with the first joint body 410 and the second joint body 420 always in contact with each other, so that it is easy to support a load and ensure ease of rotation between the members.

[0216] The first joint body 410 and the second joint body 420 may each include a bending accommodation portion 460 and a joint contact surface 450. The bending accommodation portion 460 may provide an area around which the bending member 430 is wound, and may be recessed from the joint contact surface 450. However, if necessary, the bending accommodation portions 460 may contact each other and function as the joint contact surface 450.

[0217] Meanwhile, the joint contact surface 450 provides a surface where the first joint body 410 and the second joint body 420 come into contact with and are supported by each other, and therefore, in one embodiment of the present invention, the interlocking joint 400 can rotate relative to the interlocking support part 112 and the column frame 200, i.e., the first divided frame 201, while transmitting load between them.

[0218] 20, one embodiment of the present invention may include an interlocking support portion 440. The interlocking support portion 440 may be provided on at least one of the interlocking support part 112 and the column frame 200 in the first state and may support the interlocking joint 400 upward.

[0219] In one embodiment of the present invention, the interlocking joint 400 may be located on a path through which the load of the object is transmitted in the first state. That is, the interlocking joint 400 needs to have sufficient rigidity to withstand the load of the object, and the interlocking support 440 is provided to support the interlocking joint 400 in the first state, thereby increasing the load transmission capacity of the interlocking joint 400.

[0220] The first joint body 410 and the second joint body 420 of the interlocking joint 400 may have a shape in which at least a portion thereof protrudes from the support frame 100 and the pillar frame 200, and the interlocking support part 440 may be provided on at least one of the support frame 100 and the pillar frame 200 and may contact the protruding portion of at least one of the first joint body 410 and the second joint body 420.

[0221] Meanwhile, the interlocking support part 440 may include a first support part 441 and a second support part 442. The first support part 441 may be provided on the interlocking support part 112 to support the first joint body 410, and the second support part 442 may be provided on the column frame 200 to support the second joint body 420.

[0222] When the second joint body 420 is provided on the interlocking pillar part 212, the second support part 442 may also be provided on the interlocking pillar part 212 and positioned below the protruding portion of the second joint body 420 to support the second joint body 420.

[0223] In addition, in the first state, at least a portion of the second support portion 442 may be positioned below the first support portion 441 to support the first support portion 441. The second support portion 442 provided on the pillar frame 200 may be easily disposed below the first support portion 441 provided on the support frame 100.

[0224] Therefore, in one embodiment of the present invention, a portion of the second support portion 442 contacts the second joint body 420, and at least a portion of the remaining second support portion 442 contacts the first support portion 441 below the first support portion 441, so that the second support portion 442 can directly support the first support portion 441 and the second joint body 420.

[0225] While the present invention has been shown and described with respect to specific embodiments, it will be apparent to those skilled in the art that the present invention can be modified and varied in various ways without departing from the spirit and scope of the invention as defined by the following claims.

Claims

1. a support frame for supporting an object; a column frame located below the support frame and rotatably connected to the support frame, The column frame includes a plurality of division frames sequentially connected to the support frame, and the plurality of division frames are rotatably connected to each other; A folding scaffolding device in which, in a first state, the length directions of the plurality of segment frames face the ground, and in a second state in which the plurality of segment frames are rotated from the first state, the length directions of the plurality of segment frames are aligned with the ground.

2. The folding scaffolding device according to claim 1 , wherein in the second state, the divided frames are arranged so as not to deviate from the space between both ends of the support frame in the longitudinal direction of the support frame.

3. the column frame further includes a split hinge shaft that rotatably connects a pair of adjacent split frames among the plurality of split frames, The folding scaffolding device according to claim 2, wherein the plurality of split frames are converted from the first state to the second state by rotating the split hinge shafts so that they move toward the support frame.

4. The folding scaffolding device according to claim 1 , wherein in the second state, a portion of the column frame protrudes from the support frame in a direction that blocks the longitudinal direction of the support frame.

5. The folding scaffolding device according to claim 4, wherein in the second state, a portion of each of the plurality of divided frames protrudes from the support frame in a direction that interrupts the longitudinal direction of the support frame.

6. the plurality of divided frames include a first divided frame and a second divided frame, One end of the first divided frame is rotatably connected to the support frame, one end of the second divided frame is rotatably connected to the other end of the first divided frame, The folding scaffolding device according to claim 1 , wherein the other end of the first divided frame and the one end of the second divided frame are rotated to approach the support frame during the process of converting from the first state to the second state.

7. The support frame includes a plurality of support parts, The folding scaffolding device according to claim 1 , wherein the plurality of support parts include a main support part and an interlocking support part that is rotatably connected to the main support part and rotates in conjunction with the column frame.

8. the support frame includes a support cross section having a plurality of sides respectively defined by the plurality of support parts, Any one of the plurality of sides of the support cross section is defined by the interlocking support part, The folding scaffolding device according to claim 7, wherein the column frame is deformed so that the height of the support cross section decreases during the process of rotating from the first state to the second state.

9. 9. The folding scaffolding device of claim 8, wherein, in the process of converting from the first state to the second state, the support cross section is deformed by a four-bar link movement so that a pair of opposing sides among the plurality of sides approach each other while being aligned side by side.

10. The main support part and the interlocking support part extend along a first direction aligned with the ground, The folding scaffolding device according to claim 7 , wherein the interlocking support part is connected to the main support part via a support hinge shaft extending along the first direction.

11. The folding scaffolding device according to claim 10, wherein the interlocking support part is positioned below the main support part in the first state, and is aligned with the interlocking support part in a direction parallel to the ground in the second state.

12. The folding scaffolding device according to claim 11, wherein, during the process of converting from the first state to the second state, at least a portion of the column frame together with the interlocking support part protrudes from the main support part in a direction parallel to the ground.

13. The folding scaffolding device according to claim 10, further comprising an interlocking joint that rotatably connects the interlocking support part and the column frame and interlocks the interlocking support part with the column frame.

14. The folding scaffolding device according to claim 13, wherein the joint shaft of the interlocking joint is axially rotated together with the interlocking support part.

15. The column frame is connected to the support frame via an upper hinge shaft, The folding scaffolding device according to claim 13, wherein the joint axis of the interlocking joint and the upper hinge axis extend in different directions.

16. The folding scaffolding device according to claim 15, wherein the upper hinge axis, the support hinge axis, and the joint axis have mutually different axial directions.

17. The upper hinge axis extends in a second direction perpendicular to the first direction, The foldable scaffolding device according to claim 16, wherein the joint axis extends obliquely relative to the first direction.

18. The interlocking support part includes a support inclined portion extending inclined with respect to the first direction, the column frame includes a column inclined portion positioned to face the support inclined portion and extending parallel to the support inclined portion, The folding scaffolding device according to claim 13, wherein the interlocking joint rotatably connects the support tilting section and the pillar tilting section.

19. The folding scaffolding device according to claim 18, wherein at least a portion of the column frame is linked to the linked support part via the linked joint and rotates around the upper hinge axis.

20. The column frame includes a plurality of column parts and a column cross section in which a plurality of sides are respectively defined by the plurality of column parts, Any one of the plurality of column parts defining one side of the column cross section includes the column inclined portion, The folding scaffolding device according to claim 19, wherein, in the process of converting from the first state to the second state, the column cross sections approach each other with a pair of opposing sides aligned side by side by a four-bar link movement.

21. Further included is a bottom frame disposed below the column frame; The folding scaffolding device according to claim 1 , wherein the column frame is rotatably connected to the support frame via an upper hinge shaft and rotatably connected to the bottom frame via a lower hinge shaft.

22. 22. The folding scaffolding device according to claim 21, wherein the plurality of divided frames include a first divided frame connected to the support frame via the upper hinge shaft, and a second divided frame connected to the first divided frame via a divided hinge shaft and connected to the bottom frame via the lower hinge shaft.

23. The folding scaffolding device according to claim 22, wherein the split hinge is moved closer to the center of the support frame during the process of converting from the first state to the second state.

Images