JP2010084453A - Transportable stepladder, transportation box body for the same, and method of manufacturing the stepladder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stepladder suitable for transporting some object besides being used in an original use method. <P>SOLUTION: The transportable stepladder 1 is formed to make a pair of ladder bodies fixable with legs open so that the pair of ladder bodies connected in parallel by a plurality of treads 10 are turnably connected by the legs 100 at a connection part 24 of the uppermost end tread 10a and that the uppermost end tread is formed into a connected plate 12 forming one plane by open leg fixing means 14. The stepladder is transportable in an inverted attitude with wheels 20 embedded in an erectable manner in a plurality of parts of the upper face of the connected plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stepladder, and more particularly to a stepladder that can carry a load with a slight improvement over a normal stepladder.

  In the conventional stepladder, a pair of ladder bodies whose legs are connected in parallel by a plurality of treads are rotatably connected at the connection part of the uppermost tread, and the pair of ladders cannot be fully opened when standing. As described above, the leg portions or the treads of both ladder bodies are fixed by connecting rods or connecting chains for stabilization.

  Stepladders are used outdoors by farmers for harvesting fruits, repairing a little high places, and indoors, such as organizing bookshelves and caring for flowers and plants on higher shelves. At this time, it was necessary to use harvested fruits, baskets, carts and transport vehicles for transporting organized books and flowers.

  For this reason, while preparing a trolley | bogie etc. and carrying out predetermined conveyance and arrangement | positioning, it was necessary to clear the used trolley | bogie etc. and a stepladder in the original position, respectively, and it was very troublesome.

  For this reason, the thing which attached the wheel to the lower end part of a stepladder, the stepladder with a trolley | bogie, etc. are devised (for example, patent document 1 etc.). However, there are many things that are complicated and difficult to assemble, are unstable, and require auxiliary parts.

  In addition, when a predetermined work is completed and a transported object is generated, the stepladder used so far is turned upside down and placed on the connecting part, and the transported object is transported by pulling the leg part or the step board of the stepladder. You can also think of rough work. However, in such a method, the stepladder itself is damaged, and if it is carried out indoors, the floor is damaged. Even if the above method is carried out outdoors, it is very inefficient.

JP 2003-56266 A JP 2005-126906 A

  Therefore, the present invention aims to provide a stepladder suitable not only for using a stepladder in its original way of use, but also particularly suitable for moving a transported object generated during the work, which enables work at a high place. .

  The transportable stepladder according to the present invention has a pair of ladders whose legs are connected in parallel by a plurality of treads so as to be pivotable at the connecting part in the uppermost tread, and the upper legs are fixed by the open leg fixing means. The pair of ladders are stepladders that can be fixed to open legs so that the upper end tread plate is a flat connecting plate, and wheels can be stood up at a plurality of positions on the upper surface of the connecting plate. Good. The stepladder can be transported through the wheels in an inverted posture with the plurality of wheels standing upright.

  The transportable stepladder according to the present invention has a pair of ladders whose legs are connected in parallel by a plurality of treads so as to be pivotable at the connecting part in the uppermost tread, and the upper legs are fixed by the open leg fixing means. The stepladder is a stepladder capable of fixing the pair of ladders to open legs so that the upper tread is a flat connecting plate, and provided with wheel fitting holes at a plurality of positions on the upper surface of the connecting plate. The stepladder may be transportable in an inverted posture in a state in which the wheel is fitted in a wheel fitting hole provided at a location.

  The transportable stepladder according to the present invention has a pair of ladders whose legs are connected in parallel by a plurality of treads so as to be pivotable at the connecting part in the uppermost tread, and the upper legs are fixed by the open leg fixing means. A stepladder capable of fixing the pair of ladders to open legs so that the upper end tread is a flat connecting plate, and the upper surface of the connecting flat plate and the surfaces of the four side surfaces connected downward from the upper surface, A cushioning non-woven fabric was detachable. By setting the stepladder in an inverted posture, the cushioning nonwoven fabric is brought into contact with the floor, and the stepladder can be moved without damaging the floor.

  The transportable stepladder of the present invention may include a transport base that connects at least one or more of the facing plates of the pair of ladder bodies in a flat plate shape by a fixing means. If comprised in this way, a thing can be carried on a conveyance stand in the inverted state of this stepladder. In this case, the leg fixing means may be released so that the connecting flat plate forms a single plane.

  In the transportable stepladder of the present invention, at least a pair of the treads of the opposed ladder bodies may be formed integrally with a flat plate-shaped carriage that can be folded at the center of the opposed ladder bodies (FIG. 6). , Reference numeral 42). The carrier can be folded together with the connecting portion to store the stepladder of the present invention. Also in this case, the leg fixing means is released if necessary.

  The transportable stepladder according to the present invention has a pair of ladders whose legs are connected in parallel by a plurality of treads so as to be pivotable at the connecting part in the uppermost tread, and the upper legs are fixed by the open leg fixing means. The stepladder is a stepladder capable of fixing the pair of ladders to open legs so that the upper tread is a flat connecting plate, and the upper surface covers the connecting flat plate from above in the open leg fixing state of the stepladder. A transport box (see Patent Document 2 and FIG. 1) whose lower part is opened, in which each end part of the four side surfaces connected to the upper surface and the lower side thereof abuts on each of the leg parts of the pair of ladder bodies, And a carriage for connecting at least a pair of the tread plates facing each other of the pair of ladder bodies in a flat plate shape by a fixing means. For this reason, a conveyed product can be mounted in a conveyance stand in an inverted posture. In the following description, the portion of the stepladder capable of carrying the present invention from which the carrying case and the carrying stand are removed is referred to as a “stepladder body”.

  The transportable stepladder according to the present invention has a pair of ladders whose legs are connected in parallel by a plurality of treads so as to be pivotable at the connecting part in the uppermost tread, and the upper legs are fixed by the open leg fixing means. The stepladder is a stepladder capable of fixing the pair of ladders to open legs so that the upper tread is a flat connecting plate, and the upper surface covers the connecting flat plate from above in the open leg fixing state of the stepladder. Each of the end faces of the four side surfaces connected to the upper surface and the lower side includes a transport box that is open on the lower side and abuts against the legs of the pair of ladder bodies, and includes at least a pair of the opposing ladder bodies. The treads may be integrally formed with a flat plate-shaped carrier that can be folded at the center of the opposing ladder body. In this case, when storing the stepladder, the carriage can be folded together with the connecting portion, and it is not necessary to attach or detach the carriage, and the stepladder of the present invention can be stored compactly.

  The transportable stepladder of the present invention may be configured such that the lower part of the lowermost tread plate pair of the pair of ladder bodies can be bent and fixed. Thereby, the transportable stepladder of the present invention can be easily moved manually.

  In the carrying case of the present invention, a cushioning nonwoven fabric can be detachably spread on the upper surface of the connecting flat plate and the surfaces of the four side surfaces. If comprised in this way, when carrying the stepladder of this invention in an inverted posture, the worry which damages a floor or a surrounding thing can be reduced significantly.

  The transport box of the present invention may be housed in a plurality of places on the upper surface of the transport box so that the wheels can be erected. The stepladder can be used as a transport vehicle by setting up the wheels of the transport box and setting the transportable stepladder of the present invention to an inverted posture.

  In the carrying case of the present invention, wheel fitting holes may be provided at a plurality of locations on the upper surface of the carrying case. The stepladder can be used as a transporting vehicle by fitting a separately prepared wheel into the wheel fitting hole and setting the transportable stepladder of the present invention to an inverted posture.

  The transportable stepladder manufacturing method of the present invention includes a pair of ladder bodies whose legs are connected in parallel by a plurality of treads so as to be pivotably connected at the connecting part of the uppermost tread, and the leg fixing means is used. A step of preparing a stepladder body capable of fixing the pair of ladders to open legs so that the uppermost treadle is a flat connecting plate; The transport box is covered and fixed from above the connecting plate so that the end portions of the four side surfaces of the transport box formed from the four side surfaces connected to the lower side are in contact with the legs of the pair of ladder bodies. And a step of fixing the carriage so that the opposing treads of the pair of ladder bodies are connected in a flat plate shape. The transportable stepladder of the present invention can be easily manufactured by fixing the transport box and the transport stand to the conventional stepladder.

  As shown in FIG. 6, the transportable stepladder of the present invention can carry the load placed on the transport table with the transportable stepladder in an inverted posture. An object can be placed on a carriage fixed to an upper part or a lower part of a step board of a stepladder and transported by a wheel or a cushioning nonwoven fabric spread on the transport box.

  The transportable stepladder according to the present invention is configured such that a wheel can be stood upright on the upper surface of a connecting flat plate in which the uppermost tread has a flat surface, or a wheel fitting hole is provided on the connecting flat plate to attach the wheel. The stepladder of the present invention can be easily transported in the inverted state. In particular, when a cushioning nonwoven fabric is spread on the connecting flat plate, the floor and surrounding furniture can be protected by the cushioning property while the stepladder is being transported.

  Furthermore, if a carriage is connected to at least one pair of ladders on opposite ladders, it is possible to carry an inverted stepladder by placing an article on the carriage, so there is no need to prepare a separate carriage. It is.

  Also, if the carriage is integrated with at least one pair of the ladders facing each other and can be folded at the center of the ladders facing each other, the stepladder can be folded together with the connecting portion and removed to the stepladder body. The stepladder of the present invention can be stored integrally with the stepladder main body.

  Next, in another embodiment of the transportable stepladder according to the present invention, the upper part of a normal stepladder is covered and fixed by a transport box, and a pair of stepping plates of opposing ladder bodies are connected and fixed by a transport base. . Accordingly, the sense of stability in the opening direction of the stepladder is increased, and the work at a high place can be performed with confidence.

  The carrying case according to the present invention is formed such that wheels are erected on the upper surface, for example, at four corners, and four side surfaces are opened downward from the upper surface. Therefore, when the wheel is erected and the stepladder of the present invention is used in an inverted posture, it is possible to easily carry the baggage on the carriage. The same effect can be obtained by using wheel fitting holes at the four corners of the upper surface of the transport box instead of the wheels, and fitting the wheels as necessary.

  In addition, the carrying case of the present invention may be used with a cushioning nonwoven fabric spread on the upper surface and the four side surfaces. It can be transported without damaging indoor flooring and tatami mats.

  As described above, the transportable stepladder according to the present invention is very convenient because it can perform a stable work at a high place and can also serve as a transport vehicle. It is no longer necessary to prepare a separate storage, which can contribute to saving storage space.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a transportable stepladder according to the present invention will be described with reference to the drawings. Hereinafter, the same reference numerals are used for the same components throughout the drawings.

  Referring to FIG. 1, an embodiment of a transportable stepladder 1 according to the present invention includes a pair of ladder bodies 150 a and 150 b in which legs 100 are connected in parallel by a plurality of treads 10 a and 10 b, at the uppermost end. The pair of ladder bodies 150a, 150a, 10b are connected so as to be rotatable at the connecting portion 24 of the step boards 10a, 10b, and the uppermost tread boards 10a, 10b become the connecting flat plate 12 forming one plane by the open leg fixing means 14. 150b is a stepladder that can be fixed with its legs open, and the wheels 20 can be stowed upright at a plurality of positions on the upper surface of the connecting flat plate 12. In addition, the connection flat plate 12 shall say the shape containing the upper surface of the said uppermost step board 10a, 10b, four side surfaces connected below from the upper surface of the said step board 10a, 10b, and its lower surface.

  As described above, on the upper surface of the connecting flat plate 12 of the stepladder 1, wheel storage holes 21 are provided at a plurality of places as shown in FIG. The stepladder 1 can be transported in an inverted posture in a state where the plurality of wheels 20 are erected as shown in FIG. For example, as shown in FIG. 1, the wheels 20 are housed in the wheel housing holes 21 so as to be erected at the four corners of the upper surface of the connecting flat plate 12.

  Alternatively, as shown in FIG. 3, in the state in which the wheel fitting hole portions 22 are provided at a plurality of locations on the upper surface of the connecting flat plate 12 and the wheels 20 are respectively fitted to the wheel fitting hole portions 22 provided at the plurality of locations. 1 may be transported as an inverted posture. Also in this case, for example, wheel fitting holes 22 are provided at the four corners of the upper surface of the connecting flat plate 12, and the separately prepared wheel 20 is fitted during transportation to transport the stepladder 1 (FIG. 3).

The transportable stepladder 1 of the present invention is formed of a light metal such as aluminum like a normal stepladder,
The open leg fixing means 14 shown in FIG. 1 may be formed of a connecting rod or a connecting chain as in the prior art, but the material and shape are not particularly limited as long as the function is achieved.

  Further, the cushioning nonwoven fabric 50 may be detachably spread on the upper surface of the connecting flat plate 12 and the surfaces of the four side surfaces connected downward from the upper surface. In this case, the wheel 20 is housed in the wheel housing hole 21 or removed from the wheel fitting hole 22.

  The cushioning non-woven fabric 50 is preferably made of soft wool or the like, and the back surface thereof is preferably a non-woven fabric that is detachably formed with a back tape or the like. For example, cushion felt (manufactured by Intra Co., Ltd.) or interior felt (Kitakawa Industries). However, it is not particularly limited to this, and any material that has cushioning properties and is detachable can be used.

  In order to spread this cushioning nonwoven fabric 50 on the upper surface of the connecting flat plate 12 and the surfaces of the four side surfaces thereof, the stepladder 1 of the present invention is such that the cushioning nonwoven fabric comes into contact with the floor in an inverted posture and drags the stepladder 1. It can be transported without damaging furniture, walls, and floors that are easy to hit during transportation. Moreover, since the cushioning nonwoven fabric 50 is detachable, it can be replaced with a new cushioning nonwoven fabric 50 when dirt or cracks start to appear.

  On the contrary, the stepladder 1 can be easily transported by the wheel 20 when there is no need to be particularly concerned about scratches or dirt on the ground contact surface, such as when planting trees outdoors.

  As described above, the stepladder 1 of the present invention can be easily moved. For example, as a result of working at a high place using the stepladder 1, there are many cases where an object to be transported or an object to be transported is generated. . In this case, it is necessary to prepare a caster carrier vehicle, a carrier bed for transportation, and the like separately from the stepladder 1, but this is very troublesome. Therefore, it is preferable that the stepladder 1 according to the present embodiment is provided with a carriage 40 that connects at least one or more treads 10a, 10b facing each other of the pair of ladder bodies 150a, 150b in a flat plate shape by a fixing means.

  For example, as shown in FIG. 4, the carriage 40 is latched to the treads 10a, 10b other than the uppermost ends by latching portions 45a, 45b, and 45c, 45d which are fixing means in this embodiment, respectively. 40 is fixed to the upper part or the lower part of the treads 10a, 10b. If the stepladder 1 of this invention is made into an inverted posture, a desired conveyance thing can be mounted on the conveyance stand 40, and this can be conveyed with the stepladder 1. FIG.

  Alternatively, the flat carriage 40 is integrally formed so as to connect the opposed treads 10a and 10b of the opposed ladder bodies 150a and 150b and to be folded at the center of the opposed ladder bodies 150a and 150b. Also good. When the stepladder 1 is folded around the connecting portion 24, the carriage 40 can be folded together with the stepladder 1, and the stepladder 1 can be stored compactly without attaching or detaching the carriage 40.

  In addition, the carrier 40 can be installed by the number of sets of the treads 10a and 10b excluding the uppermost end, and a suitable number of carriers 40 can be installed according to the amount of luggage. Moreover, it is preferable to form the conveyance stand 40 with a material strong to some extent so that it can bear the load of the conveyance thing mounted on it.

  Next, a transportable stepladder 2 and a transport box 30 attached to the stepladder 2 according to another embodiment of the present invention will be described with reference to FIG.

  In the transportable stepladder 2 according to the present invention, the leg portion 100 is rotatably connected to a pair of ladder bodies 150a and 150b connected in parallel by a plurality of treads 10 at the connecting portion 24 in the uppermost treads 10a and 10b. The pair of ladders 150a and 150b are stepladders that can be connected and opened and fixed so that the uppermost treads 10a and 10b form a connecting flat plate 12 forming a single plane by the open leg fixing means 14. Up to this point, it is substantially the same as the stepladder 1 of the above embodiment, and is the same as the stepladder conventionally used.

  In the stepladder 2 of the present embodiment, when the stepladder 2 is in an open leg fixed state, the upper surface 32 covers the connecting flat plate 12 from above, and each of the end portions 34a, 34b, 34c, 34d further includes a transport box 30 that is in contact with each of the leg portions 100 of the pair of ladder bodies 150a and 150b and that is open at the bottom. The transport box 30 is fixed to the upper and side portions of the connecting flat plate 12 by a box fixing means (not shown) such as a hook, but the box fixing means is not particularly limited regardless of the hook.

  The stepladder 2 includes a carriage 40 for connecting the opposed treads 10a, 10b of the pair of ladder bodies 150a, 150b in a flat plate shape by the fixing means 14, but the configuration is the same as the stepladder 1 in the above embodiment. It is. Accordingly, the carriage 40 and the carriage 40 have a flat plate shape so that at least a pair of the step boards 10a and 10b of the opposed ladder bodies 150a and 150b can be folded at the center of the opposed ladder bodies 150a and 150b. It may be formed integrally.

  As described above, when the carriage 40 is connected and fixed, the open leg fixing means 14 may be released, and the length of the carriage 40 that connects the opposed treads 10a and 10b of the pair of ladder bodies 150a and 150b. However, the length of the carriage 40 may be adjusted so that the connecting flat plate 12 is planar.

  Further, the stepladder 2 is a fixing means for the carriage 40 from the lower part or the upper part of the pair of opposing step boards 10a, 10b of the opposing ladder bodies 150a, 150b, for example, as in the above embodiment. Since the stoppers 45a and 45b and 45c and 45d are respectively locked, the angle formed by the ladder bodies 150a and 150b is restricted by the length of the fixing means. Accordingly, the angles formed by the four side surfaces of the transport box 30 and the upper surface 32 of the transport box 30 are naturally restricted.

  On the contrary, when the connecting rods, connecting chains, etc., which are the open leg fixing means 14, function in the same manner as ordinary stepladders, the angle formed by the ladder bodies 150a, 150b is regulated by the length of these connecting rods or connecting chains. It becomes. Accordingly, the angle formed between the side surface of the transport box 30 and the upper surface 32 of the transport box 30 is also regulated thereby, and the length of the transport table 40 is also regulated.

  That is, the transport box 30 formed according to the above regulation is fitted and fixed to the connecting portion 24 of the stepladder 2 and adjusted to the size regulated by the length of the connecting rod or connecting chain as the open leg fixing means 14. The carriage 40 fixes both the 10a and 10b from the upper or lower part of the pair of footboards 10a and 10b.

  Note that the number of pairs (pairs) of the step boards 10a and 10b included in the stepladder 2 is two or more including the uppermost step boards 10a and 10b, like the stepladder 1, and the number is not particularly limited. Accordingly, the number of the carriages 40 is not particularly limited as long as the number of the carriages 40 is 1 or more and the number of the pairs of the treads 10 excluding the uppermost treads 10a and 10b.

  Further, for the sake of simplicity in the present specification, when it is not particularly necessary to distinguish between the ladder bodies 150 a and 150 b, the ladder body 150, the uppermost tread boards 10 a and 10 b are the tread board 10, and the side surfaces of the transport box 30. The four sides 34a, 34b, 34c, 34d connecting the two are collectively referred to as the side 34.

  The stepladder 1 and the stepladder 2 of the above embodiment have substantially the same configuration, but the assembly-type stepladder 2 has a feature that a carrying case 30 that is an independent part can be attached to a normal stepladder. However, it is necessary to adjust the dimensions of the carriage 40 and the dimensions of the stepladder to be attached.

  The carrying case 30 may be formed such that the wheels 20 are stowed upright at, for example, four corners of the upper surface 32, and the four side surfaces are opened downward from the upper surface 32. If the wheels 20 are erected as shown in FIG. 2 and the stepladder 2 is used in an inverted posture, a desired transported object can be placed on the transport base 40 and contribute to the transport of the mounted object.

  Alternatively, the transport box 30 may be formed by providing wheel fitting holes 22 at, for example, the four corners of the upper surface as shown in FIG. When the stepladder 2 is used for transporting an object, the wheel 20 attached in advance may be fitted into the wheel fitting hole 22 so that the stepladder 2 is in an inverted posture. Similar to the above embodiment, a desired transported object can be placed on the transport table 40 and transported.

  Further, the transport box 30 may be formed by opening four side surfaces downward from the upper surface 32, and the cushioning nonwoven fabric 50 may be spread on the upper surface 32 and the four side surfaces. Unlike the above-described embodiment, the stepladder 2 is placed in an inverted posture, and a desired carrying object is placed on the carriage 40, and the stepladder 2 is dragged on the floor or tatami mat to carry it.

  In particular, the transportable stepladder 2 on which the cushioning nonwoven fabric 50 is spread is used indoors as described above. In many cases, tatami mats and flooring are used indoors, and when an object is transported through the wheel 20 as in the above embodiment, these floor materials are easily damaged. If the cushioning nonwoven fabric 50 is used as the contact material with the floor for carrying that point, the floor material is hard to be damaged, and the stepladder 2 can be dragged on the floor for carrying.

  As described above, the transportable stepladder 2 according to the present invention can be used for transporting in an inverted posture by changing the type of the transport box 30 to be used according to the application or use place.

  In addition, the carrier 40 can be installed by the number of sets of the treads 10a and 10b excluding the uppermost end, and a suitable number of carriers 40 can be installed according to the amount of luggage.

As described above, the transportable stepladder 2 according to the present invention as described above can be manufactured as follows. That is,
1) A pair of ladder bodies 150a and 150b in which the leg portion 100 is connected in parallel by a plurality of treads 10 are rotatably connected at a connecting portion 24 in the uppermost treads 10a and 10b. Step 2) Preparing a stepladder body that can fix the pair of ladder bodies 150a and 150b to be open so that the uppermost treads 10a and 10b form a connecting flat plate 12 forming a single plane. The transport box 30 is formed so that the ends of the four side surfaces of the transport box 30 formed from the upper surface and the four side surfaces connected to the lower side of the top surface are in contact with the leg portions 100 of the pair of ladder bodies 150a and 150b. Step 3) Covering and fixing the body 30 from above the connecting flat plate 12 3) Fixing the carriage 40 so that the opposing treads 10a, 10b of the pair of ladder bodies 150a, 150b are connected in a flat plate shape. It is formed to include a step of.

  As described above, the number of tread board sets 10a and 10b is not particularly limited. If the number is n, it is possible to install up to n-1 carriages 40 excluding the uppermost tread boards 10a and 10b. is there.

  Moreover, the material of the conveyance stand 40 is not specifically limited, What kind of material may be sufficient if it can support a conveyed product.

  As mentioned above, although embodiment of the stepladder 1 and the stepladder 2 which can be conveyed concerning this invention was described, this invention is not limited to the above embodiment. For example, when using the stepladder 1 and the stepladder 2 in an inverted state for transportation, the lower end of the leg portion 100 may be bent as shown in FIG. 6 in order to prepare a handle that facilitates transportation. By holding the bent portion with a hand and pushing or pulling the stepladder 2, it is possible to carry the load more easily.

  Further, unlike the above embodiment, the carriage 40 is mounted in advance so that one side of the carriage 40 can be pivoted along the lower part of the tread board 10a or the tread board 10b, and the other tread board 10b or the tread board as necessary. It may be connected to 10a and fixed using a hook or the like. In this way, the stepladder 2 can be stored directly with the carriage 40 attached to the main body of the stepladder 2, and the complexity of storing both separately can be eliminated.

  Furthermore, a handle may be detachably attached to the upper surface of the top step board 10a or 10b of the ladder body 150a or 150b of the stepladder 1 or the stepladder 2 of the present invention. As shown in FIG. 7, a handle hole 62 for fitting the handle 60 is provided on the upper surface of the uppermost tread 10a or 10b, and the handle 60 is fitted as required.

  The handle 60 is formed by fitting 60a and 60b as shown in FIG. The length of the handle 60 can be freely adjusted depending on how the handle pieces 60a and 60b are fitted. Therefore, when the stepladder 1 and the stepladder 2 are transported in an inverted posture, the handle 60 may be detached and placed on the transport stand 40, but the transport step formed at a suitable position on the ladder body 150a or 150b. The length of the handle 60 may be adjusted and fitted into the handle hole 64 as shown in FIG. 9 and used for transporting the stepladder 1 and the stepladder 2.

  In addition, the present invention can be carried out in a mode in which various improvements, modifications, and changes are added based on the knowledge of those skilled in the art without departing from the gist thereof.

  The transportable stepladder 2 according to the present invention can be used for processing an object at a high place and transporting the object.

The disassembled perspective view of the stepladder 1 which can be conveyed based on this invention. The fragmentary perspective view which shows the state which stood the wheel from the hole part for wheel fitting. The fragmentary perspective view which shows the state which fits a wheel in a wheel accommodation hole. The perspective view showing an example of a conveyance stand. The disassembled perspective view of the stepladder 2 which can be conveyed based on this invention. The perspective view which shows an example of the stepladder 2 which can be conveyed based on this invention in use in the inverted state. The perspective view which shows the handle hole formed in the upper end part of the transportable stepladder which concerns on this invention, and the handle fitted to this. The exploded view of the handle attached to the upper end part of the transportable stepladder concerning the present invention. The figure showing the inverted posture of the stepladder of this invention at the time of making a handle fit in the handle hole formed in the stepladder which can be conveyed based on this invention.

Explanation of symbols

1: Main body of transportable stepladder according to the present invention 2: Assembling-type transportable stepladder according to the present invention 10: Tread
12: Connecting flat plate 14: Open leg fixing means (connecting rod, connecting chain, etc.)
20: Wheel 21: Wheel storage hole 22: Wheel fitting hole 24: Connection part 30: Transport box 32: Transport box upper surface 34: Intersection line formed by the side of the transport box 40: Transport table 42: Folding line 45 : Locking part 50: Cushioning nonwoven fabric 60: Handle 62: Handle hole 64: Handle hole for transportation 100: Leg part 150: Ladder body

Claims (12)

A pair of ladders, the legs of which are connected in parallel by a plurality of treads, are pivotally connected at the connecting part of the uppermost treads, and the uppermost treads form a single plane by the open leg fixing means. A stepladder capable of fixing the pair of ladders to open legs so as to be flat,
A stepladder that can be stowed upright at a plurality of positions on the upper surface of the connecting flat plate, and can be transported in an inverted position with the wheels at the plurality of positions standing upright. A pair of ladders, the legs of which are connected in parallel by a plurality of treads, are pivotally connected at the connecting part of the uppermost treads, and the uppermost treads form a single plane by the open leg fixing means. A stepladder capable of fixing the pair of ladders to open legs so as to be flat,
A stepladder that can be transported in an inverted position in a state in which wheel fitting holes are provided at a plurality of positions on the upper surface of the connecting flat plate, and the wheels are fitted in the wheel fitting holes provided at the plurality of positions. The stepladder capable of being transported in an inverted posture according to claim 1 or 2, wherein a cushioning nonwoven fabric is detachably spread on the upper surface of the connecting flat plate and the four side surfaces connected downward from the upper surface. The stepladder which can be conveyed in the inverted posture of any one of Claims 1 thru | or 3 including the conveyance stand which connects at least 1 or more said treads which the said pair of ladder bodies opposes in flat form with a fixing means. . The at least one pair of said treadboards of the said opposing ladder body is integrally formed with the flat plate-shaped conveyance stand which can be folded in the center of this opposing ladder body. A stepladder that can be transported in an inverted position. A pair of ladders, the legs of which are connected in parallel by a plurality of treads, are pivotally connected at the connecting part of the uppermost treads, and the uppermost treads form a single plane by the open leg fixing means. A stepladder capable of fixing the pair of ladder bodies to open legs so as to be a flat plate,
In the state where the stepladder is fixed to the open leg,
An upper surface covers the connecting flat plate from above, and each end of the four side surfaces connected to the upper surface and the lower side thereof abuts on each of the leg portions of the pair of ladder bodies, and the lower side of the transport box,
A carrier for connecting at least a pair of the treads of the opposing ladder bodies in a flat plate shape by a fixing means;
A stepladder that can be transported in an inverted position. A pair of ladders, the legs of which are connected in parallel by a plurality of treads, are pivotally connected at the connecting part of the uppermost treads, and the uppermost treads form a single plane by the open leg fixing means. A stepladder capable of fixing the pair of ladder bodies to open legs so as to be a flat plate,
In the state where the stepladder is fixed to the open leg,
An upper surface covers the connecting flat plate from above, and each end of four side surfaces connected to the upper surface and the lower side abuts on each of the leg portions of the pair of ladder bodies, and includes a transport box that is open at the bottom. ,
A stepladder that can be transported in an inverted posture, wherein at least a pair of the treads of the opposing ladder bodies are formed integrally with a flat plate-shaped carrier that can be folded at the center of the opposing ladder bodies. The transportable stepladder according to any one of claims 1 to 7, wherein a lower part of a pair of bottom plates of the pair of ladder bodies can be bent and fixed. The transport box according to any one of claims 6 to 8, wherein a cushioning nonwoven fabric is detachably spread on the upper surface of the connecting flat plate and the surfaces of the four side surfaces. The transport box according to any one of claims 6 to 8, wherein the transport box is configured such that wheels can be stood upright at a plurality of locations on an upper surface of the transport box. The transport box according to any one of claims 6 to 8, wherein a wheel fitting hole is provided at a plurality of locations on the upper surface of the transport box. A connecting plate in which a pair of ladders whose legs are connected in parallel by a plurality of treads are rotatably connected at the connecting part in the uppermost tread, and the uppermost tread forms a flat surface by an open leg fixing means. Preparing a stepladder body capable of fixing the pair of ladder bodies to open legs; and
In the open leg fixed state of the stepladder, the end portions of the four side surfaces of the carrying case formed from the upper surface and the four side surfaces connected to the lower side of the upper surface are in contact with the leg portions of the pair of ladder bodies. Covering the transport box from above the connecting flat plate;
Fixing the carriage so that the treads facing each other of the pair of ladder bodies are connected in a flat plate shape;
A method for manufacturing a transportable stepladder.

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