KR20220149128A - origami type scaffold - Google Patents

Abstract

The present invention relates to a scaffold for supporting a worker to perform work at a high position, and in particular, a foldable scaffold which has a foldable structure to have high compressibility and is configured to increase stability by distributing a load. To this end, the foldable scaffold according to the present invention comprises: an upper frame with a rectangular structure that can be folded in a longitudinal direction; a plurality of vertical foldable links vertically connected to a bottom surface of the upper frame and are foldable; a plurality of lower links that connect lower ends of the plurality of vertical foldable links and become closer to or farther away from each other as folded in the longitudinal direction of the upper frame.

Description

Folding workbench {origami type scaffold}

The present invention relates to a work bench that supports a worker so as to perform work at a high position, and has a foldable structure to have a particularly high compressibility and is configured to increase stability by distributing a load.

A workbench (scaffold) refers to a temporary structure installed temporarily so that construction can be carried out at a high place.

There are various types of workbenches, and when the work range at a high position is wide, the pipes are connected with a joint and a footrest is installed so that the worker can work while moving along the footrest, and when the work range is small, a ladder is used. .

On the other hand, the cargo tank of a large ship is typically formed with an inlet at the top, and the depth of the cargo tank reaches several tens of meters. In order to dry or repair such a cargo tank, a workbench is installed inside the cargo tank so that the operator can reach the ceiling of the cargo tank and work after the operator enters the interior through the entrance of the cargo tank.

Since the conventional workbench is installed by connecting straight pipes with a joint, the pipes and joints to be installed on the workbench must enter the cargo tank through a narrow inlet of the cargo tank, and the operator removes the pipes from the inside of the cargo tank. It is inconvenient to install a workbench by connecting it with a joint and dismantle it again after work.

In addition, when an operator climbs the installed workbench to work, the load applied to the workbench is concentrated at the joint connecting the pipes, and when a high load is applied, slip may occur between the joint and the pipe. In this case, a part of the workbench collapses, resulting in a safety accident.

Due to such a problem, the installation height is limited in the case of a workbench connected with a pipe joint.

JP Patent Publication No. 1998-245976 (September 14, 1998) JP Utility Model Registration Publication No. 2593840 (199.04.19.) Registered Patent Publication No. 10-1143076 (2012.05.08.) EP 268637 B1 (June 1, 1988.06) PCT 2007-132148 (2007.11.22.)

The present invention was invented to solve the problems of the prior art as described above, and the compression ratio is high so that it can pass through a narrow passage such as a cargo hold inlet of a ship, and the links constituting the workbench are in surface contact while distributing the load widely. Its purpose is to provide a foldable workbench that can be installed safely and easily by folding.

A foldable workbench according to the present invention for achieving the above object has a rectangular structure, a longitudinally foldable upper frame, a plurality of vertical foldable links vertically connected to the bottom surface of the upper frame and foldable, and a plurality of vertical foldable links It is technically characterized to include a plurality of lower links that connect the lower ends of the upper frame and are spaced apart from each other as they are folded in the longitudinal direction of the upper frame.

In addition, according to a preferred embodiment of the present invention, the upper frame is located in the width direction of the upper frame and is positioned in the longitudinal direction of the upper frame with a plurality of upper links spaced apart from each other and positioned in parallel in the longitudinal direction of the upper frame. It connects the ends of the upper link and includes a plurality of foldable horizontal foldable links.

Further, according to a preferred embodiment of the present invention, the foldable work table includes three upper links, four horizontal fold links, six vertical fold links, and three lower links, and the foldable work table is unfolded. When forming a rectangular parallelepiped structure.

In addition, according to a preferred embodiment of the present invention, a connector is installed in the upper frame at a point where the upper link and the horizontal folding link are connected, and a pin capable of installing a brace is formed in the connector.

Further, according to a preferred embodiment of the present invention, in the connector, an opening is formed through the upper surface and the front so that the end of the lower link of the other foldable work table located therein can be inserted, and either the left or the right side or both sides A bracket for fixing the horizontal foldable link is formed on the bottom, and the end of the upper link is fixed to the bottom.

Further, according to a preferred embodiment of the present invention, a pin is formed on the outside of the rear surface of the connector, and a pin is formed on the outside of the side where the bracket is not formed among the left and right sides.

In addition, according to a preferred embodiment of the present invention, in the horizontal folding link, the two flat plates are wrapped with a flexible covering material so that the two flat plates can be unfolded in a flat state or folded in a right angle structure, and the two flat plates are folded along the folding line at right angles. It can be folded by connecting the inner side of it with a covering material.

Further, according to a preferred embodiment of the present invention, the horizontal foldable links in which two flat plates form a set have a structure in which a plurality of sets of horizontal foldable links are connected in the longitudinal direction of the upper frame, and the connected plurality of horizontal foldable links are of the upper frame. The inner surfaces of both sides of the horizontal adjustment link are connected with the covering material along the folding line that is folded in the longitudinal direction so that it can be folded in the longitudinal direction.

In addition, according to a preferred embodiment of the present invention, the upper link, the lower link, and the vertical fold link are inside of the four flat plates so that the four flat plates wrapped with the covering material can be folded or spread in a square pipe structure in a state of being overlapped with two rows of double layers. It is connected by a loop-type cladding material and can be unfolded or folded.

In addition, according to a preferred embodiment of the present invention, the vertical folding links in which a set of four flat plates are formed has a structure in which a plurality of sets of vertical folding links are connected in a vertical direction, and a plurality of sets of connected vertical folding links are vertically overlapped in a multi-layered state. In order to be foldable in the direction, the inner surface of the vertical fold link is connected with the covering material along the fold line that folds in the vertical direction to be foldable.

In addition, according to a preferred embodiment of the present invention, when the horizontal foldable links folded in a right angle structure are unfolded in the longitudinal direction, the flat plates of the adjacent horizontal foldable links are in contact with each other in thickness.

In addition, according to a preferred embodiment of the present invention, the projections and grooves are alternately formed in the longitudinal direction of the flat plate, and the two flat plates maintain a state in which the projections and the grooves are coupled to each other in the unfolded or folded state of the two flat plates.

In addition, according to a preferred embodiment of the present invention, when the vertical foldable links spread out in a square pipe structure are spread out in the vertical direction, the vertical foldable links positioned at the top and bottom are in contact with each other in thickness.

In addition, according to a preferred embodiment of the present invention, four flat plates are formed by alternating projections and grooves in the longitudinal direction, and two flat projections and grooves located on the same plane in a state where the four flat plates are overlapped in two rows and double layers are The projections and grooves are mutually coupled to each other, and when four flat plates are spread out in a square pipe structure, the flat plates positioned at right angles are mutually coupled.

As described above, the foldable workbench according to the present invention is modularized so that the height of the foldable workbench can be increased to a height at which work can be performed by stacking a plurality of modules. Therefore, as in the prior art, it is possible to solve the difficulties in work, such as the operator has to connect the pipe with a joint.

In addition, the foldable workbench according to the present invention can stably stack or connect a plurality of modules in a vertical or horizontal direction using connectors. Therefore, it is possible to expand stably by stacking or horizontally connecting a plurality of modules using a connector in a specific space.

In addition, the unfolded collapsible workbench is in contact with the surface contact, so that the load can be widely distributed. Conventionally, there is a problem that the joint slips along the pipe as the pipe is connected as a joint, but the foldable workbench according to the present invention can prevent the occurrence of a safety accident due to slip as it is connected by surface contact.

1 is a perspective view showing an unfolded state of a foldable workbench according to the present invention;
2A to 2E are conceptual views showing the relationship in which the foldable workbench according to the present invention is transformed from a folded state to an unfolded state;
3 is a conceptual diagram of the structure of the horizontal folding link, which is an angle structure shown in FIG. 1,
4 is a conceptual diagram of the structure of an upper link, a lower link, and a vertical fold link, which are the square pipe structures shown in FIG. 1 .
Figure 5 is a perspective view showing the connector shown in Figure 1,
6 is a conceptual diagram showing a state in which the modules of the foldable workbench shown in FIG. 1 are stacked;
FIG. 7 is a conceptual diagram illustrating a state in which a brace is installed in a state in which the modules of the foldable workbench shown in FIG. 1 are stacked.

In the following, a preferred embodiment of the foldable workbench according to the present invention will be described in detail with reference to the accompanying drawings, the configuration of the foldable workbench composed of one module will be described in detail first, and then the other foldable workbench of one module unfolded after that will be described in detail. The configuration of stacking and combining the foldable workbench of the module will be described.

In the drawings, FIG. 1 is a perspective view showing a foldable workbench according to the present invention in an unfolded state, and FIGS. 2A to 2E are conceptual diagrams illustrating a relationship in which the foldable workbench according to the present invention is transformed from a folded state to an unfolded state, and FIG. 3 is It is a conceptual diagram of the structure of the horizontal foldable link which is an angle structure shown in FIG. 1, and FIG. 4 is a conceptual view of the structure of the upper link and the lower link and the vertical fold link which are the square pipe structures shown in FIG. And Fig. 5 is a perspective view showing the connector shown in Fig. 1, Fig. 6 is a conceptual view showing a state in which the modules of the foldable work table shown in Fig. 1 are stacked, and Fig. 7 is the module of the foldable work table shown in Fig. 1 is stacked It is a conceptual diagram showing the state in which the brace is installed.

When the foldable work table 100 is unfolded, it has a rectangular parallelepiped structure as shown in FIG. 1 .

Three upper links 111 disposed at intervals in the longitudinal direction at the upper portion of the foldable workbench 100, and three lower links 115 positioned at the lower portion corresponding to the three upper links 111, Horizontal foldable links 113 connecting the end of the upper link 111 and the adjacent end of the upper link 111, and connecting the corresponding end of the upper link 111 and the lower link 115, and connecting the end of the vertical Includes foldable links 117 .

In the foldable workbench 100 configured as described above, three upper links 111 and three lower links 115 are gathered together as shown in FIG. 2A according to the folding of the horizontal foldable links 113 and the vertical foldable links 117 . It is in a compressed state, and when the folding links 113 and 117 are unfolded, as shown in FIG.

Here, the footrest (not shown) is seated and fixed to the upper frame 110 formed by combining the three upper links 111 and the four horizontal folding links 113, and the operator climbs on the footrest to perform the work.

In addition, as shown in FIG. 7 , as shown in FIG. 7 , the other foldable work table 100 is stacked on the six connectors 130 installed at the point where the upper link 111 and the horizontal foldable link 113 meet. (130) are connected.

Hereinafter, the foldable workbench configured as described above will be described in detail.

3 is a conceptual diagram of a structure of a horizontal foldable link having an angle structure, and FIG. 4 is a conceptual view of a structure of an upper link and a lower link and a vertical foldable link having a rectangular pipe structure.

As shown in FIG. 3 , the horizontal folding link 113 of the angle structure includes two flat plates 120 surrounded by a covering material 121 , and any one of the two flat plates 120 is located on one surface. When the flat plate is vertically folded, the inner surface, which is folded so as to be folded in a right angle structure, is connected to the covering material 121 to form a fold line 123 . Accordingly, the two flat plates 120 are connected to the covering material 121 along the fold line 123 , and in the unfolded state, the thickness surfaces of the flat plates 120 are in a state to face each other, and the fold line connected by the covering material 121 . If any one of the two flat plates 120 is built around (123), it can be folded at a right angle.

In addition, in the horizontal foldable link 113 , the two flat plates 120 described above form a set, and three sets of flat plates 120 are connected in the longitudinal direction of the foldable workbench 100 by the covering material 121 .

In the flat plate 120 formed in three sets in the longitudinal direction of the foldable work table 100 , the flat plate 120 positioned in the longitudinal direction is connected to the folded inner surface covering material 121 to form a fold line 123 . Accordingly, as the four horizontal folding links 113 connecting the three upper links 111 are folded, the three upper links 111 are closely gathered and compressed as shown in FIG. 1 .

Here, the flat plate 120 may be made of wood, steel, or a composite material, and the covering material 121 surrounds the flat plate 120 while adjacent flat plates 120 are positioned horizontally or are folded or stacked at right angles to each other. It may be composed of a flexible fabric (fabric) connecting the flat plates 120 to be folded.

On the other hand, each of the upper link 111, the lower link 115, and the vertical fold link 117 of the rectangular pipe structure shown in FIG. 4 is provided with four flat plates 120 wrapped with a covering material 121, and The two flat plates 120 are positioned in parallel on the two parallel flat plates, and the four fold lines 123 are formed by connecting the bottom surfaces of the upper two flat plates and the upper surfaces of the lower two flat plates with a loop-type covering material. to form

Therefore, when unfolding the four flat plates 120, the flat plates 120 form a right angle based on the four fold lines 123 in the structure of a square pipe, and when the four flat plates 120 are folded, two flat plates at the bottom and It is folded so that the two plates are located on the top. At this time, the lower plates and the upper plates form a plane 180 degrees with respect to the fold line 123, and the upper plate and the lower plate in the folded state are folded based on the fold line 123 on both sides and are folded in a stacked state. .

The upper link 111 and the lower link 115 form a rectangular pipe structure in an unfolded state, and have a structure in which two upper flat plates 120 and two lower flat plates 120 are stacked in a folded state.

On the other hand, the foldable workbench 100 is provided with six vertical foldable links 117 as the vertical foldable links 117 connect the ends of the three upper links 111 and the three lower links 115, respectively. .

The vertical folding link 117 has a structure in which four flat plates 120 form a pair to form a structure of a square pipe, and two square pipes are connected to each other so that the upper and lower portions are foldable. That is, the vertical foldable link 117 positioned at the upper portion is connected to both ends of the upper link 111 , and the vertical foldable link 117 positioned at the lower part is connected to both ends of the lower link 115 . In addition, the vertical folding links 117 located at the top and bottom are folded in a structure in which the inner side of the fold line is connected with a covering material, so that the flatly folded upper and lower vertical fold links 117 are stacked up and down as shown in FIG. 4 . On the other hand, when the vertical foldable links 117 positioned at the upper and lower parts are unfolded, the vertical foldable links 117 positioned at the upper and lower parts make surface contact with each other in contact with the thickness surfaces of the flat plates.

In addition, in the upper link 111 , the lower link 115 , the horizontal fold link 113 , and the vertical fold link 117 , when two flat plates are located on the same plane, The grooves 125 and the projections 127 alternately formed in the longitudinal direction form a plane while mutually bonding with the projections and grooves of another flat plate. And even when folded at a right angle with respect to the fold line 123 , the protrusion 127 is positioned to be fitted into the groove 125 in a state where the groove and the protrusion match but form a right angle with each other.

Hereinafter, the connector 130 connecting the end of the upper link 111 and the horizontal folding link 113 will be described in detail.

As shown in (a), (b), (c) of Figure 5, the connector 130; 130a, 130b, 130c is divided into three types. The first connector 130a connecting the upper link 111 located on the left side of the upper frame 110 and the horizontal folding link 113, the upper link 111 located in the center of the upper frame 110, and both sides of the horizontal folding It is divided into a second connector 130b connecting the links 113 and a third connector 130c connecting the upper link 111 located on the right side of the upper frame 110 and the horizontal folding link 113 .

The first connector 130a has an open portion 131 that is closed on the left side, the right side, the back side, and the bottom surface, and is open to the top and front, and a bracket 133 to which the horizontal folding link 113 is fixed is formed on the right side. , a pin 135 to which the brace 140 can be hung is formed on the outside of the left side and the outside of the back side.

The second connector 130 has the left side, the right side, the back side, and the bottom surface blocked, and an opening 131 opened at the top and the front is formed, and the horizontal folding link 113 is fixed to the left side and the right side, respectively. 133) is formed, and a pin 135 on which the brace 140 can be hung is formed on the outside of the rear surface.

The third connector 130c is a symmetrical structure of the first connector 130a, and the left side, the right side, the back side, and the bottom are blocked, and an open part 131 open to the top and the front is formed, and a horizontal foldable link ( A bracket 133 to which 113 is fixed is formed, and a pin 135 to which the brace 140 can be hung is formed on the outside of the right side and the outside of the rear side.

The flat plate of the upper link 111 is fixed to the bottom surface of the three connectors 130 configured in this way, and the flat plate of the corresponding horizontal folding link 113 is fixed to the bracket 133 of each connector 130 .

A plurality of modules of the foldable workbench 100 configured as described above can be stacked and expanded to a desired position as described below, and the third connector 130c described above is connected to the first connector 130a or the second connector ( 130b), it is possible to expand the foldable workbench 100 of a plurality of modules in the lateral direction, that is, in the horizontal direction by mounting instead. Accordingly, the foldable workbench 100 of the plurality of modules is expandable in a vertical direction and a horizontal direction.

As shown in FIG. 1 , the upper frame of the unfolded collapsible workbench 100 is composed of three upper links 111 , four horizontal foldable links 113 and six connectors 130 , and the unfolded collapsible workbench 100 ), the foldable workbench of the other module is stacked on top of one module, as shown in FIG. 6 .

When the other foldable workbench 100 is stacked on the module of one foldable workbench 100, the opening 131 of the six connectors 130 formed in the upper frame 110 of the foldable workbench 100 located below the upper part The ends of the lower links 115 of the collapsible workbench 100 positioned at the ends are respectively fitted.

In this way, in a structure in which the lower link 115 of the foldable workbench 100 of another module is inserted into the connector 130 of the foldable workbench 100 located below, a plurality of foldable workbenches 100 can be stacked on top. have.

In addition, a brace 140 for connecting the pin 135 of the connector 130 provided on the foldable workbench 100 located at the upper portion and the pin 135 of the connector 130 provided on the foldable workbench 100 located at the lower portion. By installing, the stacked foldable workbench 100 is firmly connected.

Hereinafter, a process for installing the foldable workbench 100 in the cargo hold of a ship will be described.

The cargo hold of the ship is formed with an inlet of the cargo hold on the upper deck.

As shown in FIG. 2a, the foldable workbench 100 according to the present invention is put into the interior of the cargo hold through the inlet in a compressed state, that is, in a folded state. As described above, the foldable workbench 100 is extruded at a high compression rate as the upper link 111, the lower link 115, the horizontal foldable link 113, and the vertical foldable link 117 are folded in a folded state such as a crane, etc. Through the inlet of the cargo hold, it is possible to easily put a plurality of foldable workbenches 100 into the cargo hold.

When the operator unfolds the foldable workbench 100 put into the cargo hold in the order shown in FIGS. 2A to 2E, as shown in FIG. ) are arranged in a straight line or plane to form the first layer.

And raise the foldable workbench 100 of another module spread out on top of the foldable workbench 100 constituting the first floor, and both ends of the lower link 115 of the ascending foldable workbench 100 of the foldable workbench 100 of the first floor It is stacked so as to be inserted into the opening 131 of the connector 130 . In addition, the brace 140 is installed on the pin 135 formed in the connector 130 of the first-floor collapsible workbench 100 and the pin 135 formed in the connector 130 of the second-floor foldable workbench 100. configure not to

By stacking a plurality of foldable workbenches 100 in this manner, the foldable workbench 100 is stacked to a desired height. And when the footrest is installed on the upper frame 110 of the best foldable workbench 100, the operator can work on the footrest.

On the other hand, in the case of the horizontal foldable link 113, an angle bracket or the like may be mounted inside the folded flat plate 120 so that the folded flat plate 120 is not unfolded, so that the perpendicularly folded flat plate 120 is not unfolded.

As described above, as the foldable workbench 100 according to the present invention is modularized, the height of the foldable workbench 100 may be increased to a height at which work is possible by stacking a plurality of modules. Therefore, as in the prior art, it is possible to solve the difficulties in work, such as the operator has to connect the pipe with a joint.

In addition, since the unfolded foldable work table 100 is in contact with the thickness surface, the load can be widely distributed. Conventionally, there is a problem that the joint slips along the pipe as the pipe is connected as a joint, but the foldable workbench according to the present invention can prevent the occurrence of a safety accident due to slip as it is connected by surface contact.

100: foldable workbench
110: upper frame
111: upper link
113: horizontal folding link
115: lower link
117: vertical folding link
120: reputation
121: covering material
123: fold line
125: home
127: turn
130, 130a, 130b, 130c: connector
131: open part
133: bracket
135: pin
140: brace

Claims (14)

An upper frame that can be folded in the longitudinal direction as a rectangular structure,
A plurality of vertical folding links that are vertically connected to the bottom of the upper frame and can be folded,
A foldable workbench connecting the lower ends of the plurality of vertical foldable links and comprising a plurality of lower links whose intervals are narrowed or separated from each other as they are folded in the longitudinal direction of the upper frame.
According to claim 1,
upper frame,
A plurality of upper links positioned in the width direction of the upper frame and spaced apart from each other in the longitudinal direction of the upper frame and positioned in parallel;
A foldable workbench, which is located in the longitudinal direction of the upper frame, connects the ends of the upper link, and includes a plurality of foldable horizontal foldable links.
3. The method of claim 2,
The foldable workbench comprises three upper links, four horizontal foldable links, six vertical foldable links, and three lower links, characterized in that when the foldable workbench is unfolded, it forms a rectangular parallelepiped structure. foldable workbench.
4. The method of claim 2 or 3,
A foldable workbench, characterized in that the upper frame has a connector installed at a point where the upper link and the horizontal foldable link are connected, and a pin for installing a brace is formed in the connector.
5. The method of claim 4,
In the connector, an opening is formed through the upper surface and the front so that the end of the lower link of the other foldable work table located on the upper side can be inserted, and a bracket for fixing the horizontal foldable link is formed on either or both sides of the left and right sides, , Folding workbench, characterized in that the end of the upper link is fixed to the bottom.
6. The method of claim 5,
The connector is a foldable workbench, characterized in that the pin is formed on the outside of the rear side, and the pin is formed on the outside of the side where the bracket is not formed among the left and right sides.
4. The method of claim 2 or 3,
The horizontal folding link is designed so that the two flat plates can be unfolded in a flat state or folded in a right angle structure, so that the two plates are wrapped with a flexible covering material, Features a foldable workbench.
8. The method of claim 7,
The horizontal foldable links in which two flat plates form a set have a structure in which a plurality of horizontal foldable links are connected in the longitudinal direction of the upper frame, and the connected plurality of horizontal foldable links are folded in the longitudinal direction so as to be foldable in the longitudinal direction of the upper frame. A foldable workbench, characterized in that the inner surfaces of both sides of the leveling link along the line are connected with a flexible covering material and can be folded.
4. The method of claim 2 or 3,
For the upper link, lower link, and vertical fold link, the inside of the four plates are connected with a flexible loop-type cladding material so that the four plates wrapped with cladding can be folded in a state of being overlapped in two rows or double-layered or spread out in a square pipe structure. A foldable workbench characterized in that it is possible.
10. The method of claim 9,
The vertical foldable links made up of a set of four flat plates have a structure in which a plurality of sets of vertical foldable links are connected in a vertical direction. A foldable workbench, characterized in that it can be folded by connecting the inner surfaces of the vertical foldable links along the cladding material.
9. The method of claim 8,
A foldable workbench, characterized in that when the horizontal foldable links folded in a right angle structure are unfolded in the longitudinal direction, the flat plates of the adjacent horizontal foldable links are in contact with each other in thickness.
9. The method of claim 8,
A foldable workbench, characterized in that the projections and grooves are alternately formed in the longitudinal direction of the plate, and the projections and grooves of the two plates are maintained in a state in which the projections and grooves are mutually coupled when the two plates are unfolded or folded.
11. The method of claim 10,
A foldable workbench, characterized in that when the vertical foldable links spread out in a square pipe structure are spread out in the vertical direction, the vertical foldable links positioned at the top and bottom are in contact with each other in thickness.
10. The method of claim 9,
Four flat plates are formed by alternating projections and grooves in the longitudinal direction, and two flat projections and grooves located on the same plane are combined with each other in the state that the four flat plates are overlapped in two rows and double layers, and the four flat plates have a square pipe structure A foldable workbench characterized in that the projections and grooves between flat plates positioned at right angles are mutually coupled when unfolded.

Images