JP2014124204A - Box-shaped chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box-shaped chair that can be readily assembled, has high stiffness, is foldable into a compact configuration, and can accommodate small objects therein as required.SOLUTION: A box-shaped chair 1 includes two front and rear plates 2, two side plates 3, and four top and bottom plates 4. The side plates 3 and the front and rear plates 2 form a square tube. The side plates 3 each have a fold line 3a for valley folding near the center of the side plate 3. The top and bottom plates 4 are respectively connected to the upper and lower edges of the front and rear plates 2 such that the plates 4 can be mountain-folded. The top and bottom plates 4 each have a bend line 4a along which the plate 4 is foldable inward of the chair 1 at a predetermined position of the plate 4. The top and bottom plates 4 each include an edge 4b having top-bottom-plate slits 4c to be engaged with side-plate slits 3b provided to each of the right and left side plates 3.

Description

  The present invention relates to an assembling-type box chair composed of a single sheet-like member, and more specifically, it is lightweight and easy to assemble, has high strength when assembled, and can be folded compactly. The present invention also relates to a box-type chair that can store small items and the like inside.

A portable chair is useful for watching sports (for example, golf) in which a player frequently moves or for walking in places where there are no chairs, such as mountain walking, and various portable chairs have been commercially available. As a typical portable chair, a rectangular frame made of metal pipe as described in Patent Document 1 is combined in an X shape, and a sheet shape is formed between one side of one rectangular frame and one side of the other rectangular frame. There is a member that spans the member to form a seat.
There are also some attempts to make a portable chair with a lightweight member such as cardboard (see, for example, Patent Document 2).

Registered Utility Model No. 3058690 JP-A-10-211047

However, since the portable chair like patent document 1 is using a metal member, it is heavy and has the fault that a lot of physical strength is needed at the time of carrying.
In addition, portable chairs such as those in Patent Document 2 are not widely used because their structures are complicated to make up for insufficient strength, and assembly and folding are complicated and inconvenient.
Furthermore, after using this type of portable chair as a chair at the first place, when you move to the next place, fold it once and store it in a bag etc., then take it out from the bag etc. again at the next place. Since it is configured to assemble, it is also complicated to put in and out of a bag or the like. However, carrying a mobile chair without storing it in a bag or the like is cumbersome because it increases the amount of luggage, and after all, it is not suitable for use in situations where it moves frequently and sits only for a short time.

  In view of such circumstances, the present invention is lightweight and easy to assemble, has sufficient strength, can be folded compactly, and can store small items or the like inside if necessary, and in a state where it is not stored in a bag or the like. An object is to provide a portable box-type chair that can be carried.

  In order to achieve the above object, a feature of the present invention is an assembling-type box chair composed of a single sheet-like member, comprising two front portions, two side portions, and four top plates. The two side surfaces are formed between the left side and the right side of the front surface of the two surfaces, respectively, and the side surface and the front portion are connected in a mountain-foldable manner so that the side surfaces can be folded. It is configured to be cylindrical at the front and the front, and a foldable folding line is provided in the vicinity of the central portion of the side surface, and the top surface is near the central portion of the upper and lower edges of the side surface. Side slits are provided to fix the tip of the head, and the top surface is connected to the top and bottom sides of the front surface of the two surfaces so as to be able to fold each other, toward the interior of the chair at a predetermined position on the top surface. Bendable assembly lines are provided, and side straps provided on the left and right side surfaces are provided at the top of the top surface. A box-type chair top bottom slits respectively engaged by Tsu preparative and engage cross is provided.

  Another feature of the present invention is that the length between the top and bottom slits provided on one top surface is 0.6 times or more the distance between the two front surfaces in the assembled box-type chair. This is a box-type chair.

  Still another feature of the present invention is the above box-type chair in which the width of the side portion is equal to or less than the width of the front portion.

  Yet another feature of the present invention is the above box chair, wherein the distance from the side edge of the top surface portion to the top surface slit is 2 cm or more.

  Still another feature of the present invention is that the valley between the top surface and the front surface can be folded, and the sum of the lengths of the top surface and the bottom surface connected to the top and bottom sides of one front surface is It is said box type chair which is below height.

  Still another feature of the present invention is the above box-type chair in which the front portion and the top of the top bottom portion can be contacted and separated by a surface bonding fastener.

  Still another feature of the present invention is that a surface bonding fastener on the top surface portion side is provided at the bottom of the recessed portion provided on the top surface portion, and a surface bonding fastener on the front surface side is engaged with the recessed portion. It is said box type chair provided in the upper surface of the convex part to do.

Since the box-type chair according to the present invention is an assembly type composed of one sheet, it can be folded compactly when not in use and is lightweight.
In addition, since it is a box type consisting of two front parts, two side parts, and four top parts, a storage space is formed inside the box-type chair when in use, and the box has been folded until then. Bags that have been used to store model chairs and small items that are needed for the time being can be stored, so you can bring your luggage together.
Furthermore, the box-type chair according to the present invention is strong against pressure from the top surface and has sufficient strength as a chair.

  If the distance between the top and bottom slits provided on the top of the ceiling is 0.6 or more times the distance between the two fronts of the assembled box-type chair, the structure is relatively weak. It becomes easy to avoid the side of the bottom surface, and can sit down stably.

  If the width of the side surface portion is less than or equal to the width of the front surface portion, when the side surface portions arranged on both sides of the front surface portion are valley-folded with a fold line, the folded side surface portions do not collide, so it can be folded compactly. .

When it is possible to fold between the top surface and the front, and the sum of the length of the top and bottom connected to the top and bottom of one front is less than the height of the front, When the top surface is folded into a valley, the folded top side and bottom side do not collide, so that it can be folded compactly.
At this time, if the front part and the tip of the top face part can be contacted and separated by the surface bonding fastener, it is possible to prevent the top face part from rising up and becoming bulky due to the elastic repulsive force, and it can be stored more compactly. it can.
Furthermore, by providing the surface bonding fastener on the top surface portion side in the recessed portion provided on the top surface portion, an increase in the thickness of the top surface portion due to the surface bonding fastener is prevented, and the thickness of this surface bonding fastener is It can prevent the assembly.

FIG. 1 is a schematic perspective view showing a box-type chair of the present invention. 2A is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 2B is a schematic explanatory view showing a state in which (a) is folded. 3A is a cross-sectional view taken along the line BB in FIG. 1, and FIG. 3B is a schematic explanatory diagram illustrating a state in which (a) is folded. 4 is a development view of the box-type chair of FIG. FIG. 5 is a schematic explanatory view showing a front part and a top face part of a box-type chair provided with a surface bonding fastener. 6A is a cross-sectional view taken along the line C-C in FIG. 5, and FIG. 6B is a schematic explanatory diagram illustrating a state in which the top surface is folded into a valley fold.

As shown in FIG. 4, the box-type chair 1 of the present invention includes a single sheet-like member, and includes two front portions 2, two side portions 3, and four top surfaces 4. The two side surface portions 3 are interposed between the left side and the right side of the two front surface portions 2, respectively, and the side surface portion 3 and the front surface portion 2 are connected in a mountain-foldable manner, thereby It is comprised so that it may become a cylinder shape in the part 3 and the front part 2, and the fold line 3a which can be valley-folded is provided in the center part vicinity of the side part 3, and the center part vicinity of the upper edge of the side part 3 and a lower edge Is provided with a side slit 3b for fixing the tip 4b of the top surface portion 4, and the top surface portion 4 is connected to the upper side and the lower side of the front surface portion 2 of the two surfaces so as to be foldable, respectively. A braided wire 4a that can be bent toward the interior of the chair is provided at a predetermined position, and the tip 4b of the top surface 4 has left and right sides. Characterized in that the top bottom slit 4c to be respectively engaged by meshing intersects the side slits 3b provided on the parts is provided.
In FIG. 4, 3 c described at the right end is a joint, and one side face 3 is formed by joining the side face pieces 3 d provided at the left and right ends by screws, adhesion, welding, or the like. It is comprised so that it may be formed.

As shown in FIGS. 1 and 4, the box-type chair 1 of the present invention includes a front part 2, a side part 3, and a top face part 4. In the present invention, the front portion 2 is a portion that becomes the front or back when assembled in a box shape, and the user is usually configured to sit on the box-type chair 1 from the front portion 2 side.
The side surface portion 3 is a portion bent into a square shape (see FIG. 2 (a)), which becomes a side surface when assembled in a box shape, and is folded in a double shape when stored (see FIG. 2 (b)). ).
The top surface portion 4 is a portion that becomes a seat surface and a bottom surface when assembled in a box shape. At the time of storage, as shown by a one-dot chain line in FIG. 1A, it is extended so as to be flush with the front portion 2, or preferably folded back so as to overlap with the front portion 2 (see FIG. 3B).

  In the present invention, the side surface portion 3 is configured to be interposed between the left side and the right side of the two front surface portions 2. In addition, the interposition mentioned here means that the side surface portion 3 is disposed between the left and right sides of the front portion 2 that face each other in a state of being assembled in a box shape, and is expanded in a sheet shape, for example. In some cases, it may be arranged at the edge, or as shown in FIG. 4, it is divided into two side surface pieces 3d and each extends from the edge of another front surface portion 2, and these are attached at the time of assembly. You may comprise so that it may match.

  Between the side part 3 and the front part 2, it connects in a row so that a mountain fold is possible. In the present invention, mountain folding refers to a folding method in which the acute angle side of the fold faces toward the outside of the assembled box-type chair 1 in the assembled state. If it does in this way, as shown to Fig.2 (a), the square-tube-shaped part which consists of the side part 3 and the front part 2 is formed.

A foldable foldable line 3a is provided at the center of the side face 3, and the side fold 3 is folded into two by the fold line 3a as described above and shown in FIG. It becomes possible to bend it into a letter shape. In the present invention, the valley folding means a folding method in which the acute angle side of the fold faces the inside of the box-type chair 1 assembled. The side surface 3 folded in a U-shape functions as a vertical force bone and gives strength as a chair.
The position of the fold line 3a is preferably the same as the position of the bisector that folds the side face 3 in half, so that the side face 3 can be folded most compactly, but the present invention is not limited to this. You may provide the fold line 3a in the removed position. Further, although not shown, it is also possible to provide a foldable folding line and a foldable folding line alternately so as to be folded in multiple.

A side slit 3b for fixing the tip 4b of the top surface 4 is provided near the center of the upper and lower edges of the side 3. As will be described in detail later, the tip 4b of the top surface 4 is bent into the chair and functions as a skeleton supporting the seat. Since the side slit 3b is a part that supports the tip 4b of the top surface 4 that functions as the power bone, the side slit 3b is formed at the midpoint of the upper side and the lower side of the side part 3 in order to make the mechanical strength of the seat surface uniform. However, the present invention is not limited to this, and the side slit 3b can be provided at a position slightly deviated from the midpoint.
In addition, since it is preferable to arrange both the fold line 3a and the side slit 3b in the center of the side part 3, in the normal case, the side slits 3b are arranged at the upper end and the lower end of the fold line 3a as shown in FIG. It will be.

  The width of the front part 2 and the side part 3 (that is, the length in the horizontal direction in the assembled state; the same applies hereinafter) is not particularly limited, but the width L3 of the side part 3 is the width of the front part 2 as shown in FIG. If it is L4 or less, since the side parts 3 folded when folded as shown in FIG. 2B do not interfere with each other, they can be folded more compactly. The height of the front portion 2 may be any height that is easy to sit and fold, and is usually about 30 to 40 cm for adults and about 20 to 30 cm for children.

As shown in FIG. 4, the top surface 4 of the present invention extends from the upper side and the lower side of the front part 2. Further, the boundary between the front portion 2 and the top surface portion 4 is formed so as to be at least foldable.
The top surface 4 is a set of two surfaces, and the two top surfaces 4 extending from the upper sides of the two front surfaces 2 facing each other are folded into mountain folds, respectively. One seat is formed by combining the bottom portions. Similarly, the two top surfaces 4 extending from the lower sides of the two opposing front portions 2 are each folded into a mountain fold, and these are combined to form one bottom portion.
In the present invention, the structural difference between the seat portion and the bottom portion is not particularly defined, that is, as in the example shown in FIGS. The side may also be able to be a seat, for example, by adding a structure like a cushion to only a pair of opposing bottom surfaces 4, so that only one specific seat becomes a seat. Also good.

As shown in FIG. 4, the assembly line 4 a is provided at a predetermined position of the top surface 4, and the top surface slit 4 c is provided at the tip 4 b of the top surface 4. The assembly line 4a is a portion where the tip 4b of the top surface portion 4 can be bent toward the inside of the box-type chair 1, and the top surface slit 4c is a slit for engaging with the side surface slit 3b. . In the present invention, the top surface slit 4c and the side surface slit 3b are made to face each other by bending the top surface 4 with the assembled wire 4a, and can be engaged by cross meshing.
The cross-meshing means that when the box-type chair 1 is assembled, the top surface slit 4c and the side surface slit 3b respectively provided at the intersecting portions in a state where the tip 4b of the top surface portion 4 and the side surface portion 3 intersect. This means that they are inserted into each other.
In this way, the two front ends 4b bent inward in the assembly line 4a of the box-type chair 1 perform the function of a lateral force, so that the box-type chair of the present invention can be used even when a person is sitting. It will be strong enough not to break. In order to give sufficient strength, the length of the portion from the assembled wire 4a to the tip 4b is preferably 3 cm or more, and more preferably 5 cm or more. However, as shown in FIGS. 1 to 3, since the portion of the tip 4 b overlaps with the assembly line 4 a, it is sufficient to make one of them longer, and the other may be shortened.

In the present invention, the position of the assembly line 4a and the top surface slit 4c is such that the distance between the two front portions 2 during assembly and the side surface portion so that the top surface slit 4c and the side surface slit 3b can be engaged. It is determined according to the length of 3 or the like. Specifically, for example, the length of the side surface portion 3 is 30 cm, the distance between the two front surface portions 2 during assembly is 24 cm, the position of the fold line 3a is the center of the side surface portion 3, and the side surface slit 3b Is on the fold line 3a, the position of the assembly line 4a is 12 cm (= 24 cm / 2) from the boundary between the top surface portion 4 and the front surface portion 2, and the position of the top surface slit 4c is the position of the top surface portion 4. 9 cm (= √ ((30/2) ² − (24/2) ² )) from the end.

The actual size of each part can be appropriately determined in consideration of convenience of use, etc., but if the distance L5 (see FIG. 4) from the side edge of the top surface 4 to the top surface slit 4c is less than 2 cm, Since the portion between the side edge of the top surface 4 and the top surface slit 4c is likely to be broken, chipped, or bent, it is preferably set to 2 cm or more.
Further, in the box-type chair 1 of the present invention, the portion of the seating surface where the two top surface portions 4 are opposed to each other and the portion outside the side surface portion 3 bent into a square shape is structurally slightly. If it is weak and a strong force is applied to this part, this part may sink and the seating surface may tilt. In order to prevent this, the length L1 (see FIG. 4) between the top and bottom slits 4c provided in one top bottom part 4 is as long as possible, and preferably two front parts in the assembled box-type chair. The distance L2 (see FIG. 2) is 0.6 times or more, more preferably 0.8 times or more, and particularly preferably 1.0 times or more. If it does in this way, the ratio of the part between the two side parts 3 which are structurally strong will increase, and it will become possible to use the box-type chair 1 of this invention safely.

  The size and shape of the ceiling slit 4c and the side slit 3b are not particularly limited, and may be any long and narrow cut-outs that can be fitted to each other. It is preferable to make it easy to fit each other.

  As described above, the space between the top surface portion 4 and the front surface portion 2 in the present invention is configured to be foldable, but in addition to this, the portion is configured to be able to fold in the valley, and FIG. If the sum of the length L6 of the top surface portion 4 connected to the upper side and the lower side of one front surface portion 2 is equal to or less than the height L7 of the front surface portion 2, the top surface portion 4 becomes the front surface portion. By folding back so as to overlap, it can be folded compactly. In addition, when the sum of the length L6 of the top face part 4 connected to the upper side and the lower side of one front part 2 exceeds the height L7 of the front part 2, both the upper and lower top face parts 4 are folded back. In some cases, the two top surfaces 4 overlap each other and become thicker, so that they cannot be folded compactly.

  When configured as described above, depending on the material, the top surface 4 that is folded back by the elastic repulsive force of the material itself may automatically rise and become bulky. In order to prevent this, a method of binding the box-type chair 1 folded using a binding member made of a long member such as a band or a string, or a method of binding the front portion 2 and the top surface portion 4 as shown in FIG. There is a method in which surface joining fasteners 5a and 5b are provided on each of the tips 4b and these are joined. In the latter case, without using a member separate from the box-type chair such as a binding member, the top surface 4 is joined to the front surface 2 with one touch to prevent the top surface 4 from being automatically raised. In addition, the top-bottom surface portion 4 can be separated from the front surface portion 2 with one touch to form an assembly box chair 1.

As shown in FIG. 3, in the assembled state, the two tips 4 b of the top bottom surface portion 4 facing each other overlap each other, but the surface joining fastener 5 is provided on the tip 4 b of the top bottom surface portion 4. In this case, since the thickness of the surface bonding fastener 5 becomes an obstacle when the tips 4b of the top surface 4 are overlapped, the assembly workability may be deteriorated.
In such a case, the concave portion 4d is provided on the top surface portion 4, and the surface bonding fastener 5a is attached to the concave portion 4d so as to be substantially flush with the surface bonding fastener 5b on the front surface portion 2 side. By doing so, the thickness of the surface bonding fastener 5a does not deteriorate the workability of assembly.

The box-type chair 1 as described above can be used not only as a portable chair but also as a simple container. Therefore, for example, after taking out and assembling the box-type chair 1 from the bag, etc., the bag-type chair 1 and the necessary accessories for the time being can be stored in the box-type chair 1. Each time it moves, the box-type chair 1 is folded, stored in a bag, etc., taken out later, and reassembled.
In order to store small items or the like in the box-type chair 1, it is only necessary to remove one of the top bottom surface parts 4 from the side slit 3 b and start up. In this case, if the length of the tip 4b of the top surface portion 4 is too long, it is difficult to raise the top surface portion 4, so that this portion can be shortened. However, if the tip 4b is shortened in all the top bottom surfaces 4, the strength of the box-type chair is reduced. Therefore, it is only necessary to shorten the tip 4b for only one top / bottom surface 4 that opens and closes. Moreover, you may provide the door for taking in / out an accessory in the front part 2 in the range which does not reduce an intensity | strength.

  The material is not particularly limited as long as it is a sheet-like member that does not bend due to its own weight, but in terms of light weight, corrugated cardboard, laminated corrugated cardboard, or plastic corrugated cardboard is preferable. In particular, corrugated cardboard and plastic corrugated cardboard laminated with a film are particularly preferable. If desired, it can be colored or decorated with a pattern, a pattern, or the like.

The box-type chair 1 of the present invention functions as a lateral force bone by the two front ends 4b of the bottom surface portion 4 and functions as a vertical force bone by the side surface portion 3 bent in a U shape. By this, sufficient strength is exhibited.
When the box-type chair 1 of the present invention is seated with the front part 2 as the front, the load by the left and right buttocks is supported and dispersed by the left and right ribs formed from the side part 3 bent on the square shape. Demonstrate strong strength. Of course, it is also possible to sit with the side surface portion 3 as the front surface.

  As mentioned above, the box-type chair of the present invention is lightweight, high in strength, easy to assemble, can be folded compactly, and can carry bags and small items inside as needed. Therefore, it is useful as a portable box-type chair.

DESCRIPTION OF SYMBOLS 1 Box-type chair 2 Front part 3 Side part 3a Folding line 3b Side slit 3c Joint part 3d Side part 4 Top bottom part 4a Assembly line 4b Tip 4c Top bottom slit 4d Recessed part 5a, 5b Surface joining fastener L1 Top bottom slit L2 Distance between two front faces L3 Side face width L4 Front face width L5 Distance from the side edge of the bottom face to the top slit L6 Length of the bottom face L7 Front face length height

Claims (7)

An assembly type box-type chair composed of one sheet-like member,
It consists of two front parts, two side parts, and four top faces.
The two side surfaces are respectively interposed between the left side and the right side of the front surface of the two surfaces, and the side surfaces and the front portion are connected in a mountain-foldable manner so that the side surfaces and the front portion Configured to be cylindrical,
A foldable folding line is provided near the central part of the side part, and a side slit for fixing the top of the top surface part is provided near the central part of the upper and lower edges of the side part,
The top surface is connected to the upper side and the lower side of the front part of the two surfaces so as to be foldable, and an assembly line that can be bent toward the inside of the chair is provided at a predetermined position of the top surface,
A box-type chair characterized in that a top-bottom slit is provided at the tip of the top-bottom part to be engaged with a side slit provided on the left and right side parts by cross-meshing.   The length between the top bottom slits provided in one top bottom part is 0.6 times or more of the distance between the two front parts in the assembled box-type chair. Box-type chair as described in.   The box-type chair according to claim 1 or 2, wherein the width of the side portion is equal to or less than the width of the front portion.   The box-type chair according to any one of claims 1 to 3, wherein a distance from a side end of the top surface portion to the top surface slit is 2 cm or more.   It is possible to fold between the top surface and the front surface, and the sum of the lengths of the top surface connected to the upper and lower sides of one front surface is less than the height of the front surface. The box-type chair according to any one of claims 1 to 4.   6. The box-type chair according to claim 5, wherein the front part and the tip of the top part can be contacted and separated by a surface bonding fastener.   The box-shaped chair according to claim 6, wherein a surface joining fastener on the top surface portion side is provided in a recessed portion provided on the top surface portion.

Images