JP3216817U - Folding chair - Google Patents

Abstract

A folding chair for improving durability against repeated folding is provided.
In a wheelchair 1 that can be folded in the width direction along center lines L2 and L1 of a seat surface 20 and a backrest 10, the seat surface 20 and the backrest 10 are respectively connected to seat belts 11 and 12 for automobiles at the center lines L1 and L2. It is formed of a material knitted in a cloth shape arranged in a direction along the crossing direction. The cloth-like material is fastened by a method such as scissors or sewing so as to be wound around a frame that supports the seating surface 20 and the backrest 10. At this time, the position of the cloth-like material is adjusted so that the seat belts 11 and 12 along the center lines L1 and L2 do not overlap the center lines L1 and L2. The seat belts 11 and 12 for automobiles may use not only unused ones but also waste materials that have been used in scrapped vehicles.
[Selection] Figure 2

Description

  The present invention relates to a foldable chair.

Various chairs used in daily life including wheelchairs include foldable folding chairs. FIG. 1 is an explanatory view showing a schematic configuration of a wheelchair as a prior art. FIG. 1A shows a state in which the folding is unfolded, and FIG. 1B shows a folded state. As shown in FIG. 1A, a wheelchair is usually provided with a backrest S1 and a seating surface S2, and a user sits on the wheelchair and uses it. As shown in FIG. 1B, at the time of storage, the wheelchair is folded in the width direction, and the backrest S1 and the seating surface S2 are bent at the center lines L1 and L2 shown in FIG. 1A, respectively.
Patent Document 1 also discloses a wheelchair that can be folded in the width direction as described above.
In addition to this, a stroller is also included as a foldable chair. Moreover, it is not necessarily restricted to the thing with a wheel.

JP 2000-333997 A

However, as shown in FIG. 1 (b), some folding chairs may fold in the seat surface S2 and the backrest S1 by folding (in the example of the figure, the center lines L1 and L2 become folds). In such a folding chair, the seat surface or the backrest may be damaged at the fold portion due to long-term use.
Such a problem is not limited to wheelchairs but is common to folding chairs. In view of these problems, the present invention aims to improve the durability of a folding chair.

The present invention
A folding chair,
A folding mechanism that folds so that a crease is formed in each surface of the seating surface and the backrest;
One or both of the seating surface and the backrest can be configured as a folding chair including a reinforcing member formed by stretching a seat belt of a moving body in a direction intersecting with the fold.

In general, a seat belt of a moving body uses a material having extremely high strength and durability. In the present invention, since one or both of the seating surface and the backrest is reinforced by the seat belt, damage due to bending during folding can be suppressed, and durability can be improved.
Examples of the folding chair in the present invention include a wheelchair and a stroller. Moreover, you may comprise by the folding chair which does not have a wheel.
In the present invention, a seat belt for a moving body is used. Various moving bodies such as automobiles, airplanes, and ships can be considered.
Only one seat belt may be stretched in the direction crossing the crease, or a plurality of seat belts may be stretched.
Moreover, it may be split in a direction perpendicular to the fold line, or may be stretched diagonally.
The reinforcing material by the seat belt may be a member separate from the seat surface and the backrest or may be integrated.

In the present invention,
The reinforcing material may be arranged over the entire crease.

By doing so, the strength and durability of the seating surface and the backrest can be further improved.
In addition, since the strength of the seating surface and the backrest becomes uniform as a whole, the elongation of the seating surface and the backrest according to the sitting position and the like can be made uniform, and there is an advantage that the seating can be performed stably.

In the folding chair of the present invention,
The reinforcing material may be provided on both the seating surface and the backrest.

By carrying out like this, intensity | strength and durability can be improved rather than the aspect which provides a reinforcing material in either one.
When reinforcing members are provided on both the seating surface and the backrest, the seating surface and the backrest may be configured as separate members, or may be configured as an integral member connecting the both.

In the folding chair of the present invention,
The seat surface and the backrest may be integrally formed with the reinforcing material by knitting a seat belt arranged in a direction intersecting with the crease and in a direction along the crease in a cloth shape.

By doing so, it is possible to stabilize the position of the reinforcing material in the direction intersecting the crease, and it is possible to obtain the reinforcing effect without bias.
But the reinforcing material of this invention is not restricted to the said aspect, It is also possible to provide only in the direction which cross | intersects a crease | fold.

In an embodiment using a cloth-like reinforcing material,
The seat belt in the direction along the crease may be arranged so as not to overlap the crease.

When a cloth-like reinforcing material is used, the seat belt is also arranged in the direction along the crease, but if this seat belt is provided so as to overlap the crease, it may be difficult to fold. According to the said aspect, in order to avoid this positional relationship, it can be set as the folding chair which is easy to fold and is excellent in durability.
Such an embodiment can be realized by preparing a cloth-like material and attaching it while adjusting the position so that the seat belt in the direction along the crease does not overlap the crease.

Regardless of whether the reinforcing material is cloth-like, in the folding chair of the present invention,
A frame for supporting the seating surface and the backrest;
The reinforcing material may be fastened so as to be wound around the frame.

When the seating surface and the backrest are reinforced, the mounting portion of the seating surface and the backrest to the frame may be damaged next. However, according to the above aspect, the mounting portion is attached to the frame so as to wrap the seat belt. Strength and durability can be improved.
As a method for fastening the seat belt wound around the frame, it is possible to use a heel, sewing or other methods.

The folding chair according to any one of claims 1 to 6,
The reinforcing member is a folding chair that is a seat belt for an automobile.

As described above, the present invention can use seat belts of various moving bodies, but an automobile seat belt has an advantage that it is most easily available among various seat belts.
In addition, a seat belt that has become a so-called scrapped vehicle can be used in the present invention, and by doing so, it is possible to effectively use the waste material.

The present invention is applicable to various folding chairs,
It is particularly useful that the folding chair is a wheelchair.

From this viewpoint, the present invention can also be configured as a wheelchair that employs the various features described above.
That is,
A frame for supporting the seating surface and the backrest;
The folding chair has a folding mechanism that folds so that a crease is formed in the center in the width direction within each surface of the seating surface and the backrest,
The seat surface and the backrest are integrally formed with a reinforcing material by knitting a seat belt for an automobile arranged in a direction intersecting the crease and in a direction along the crease into a cloth shape,
The seat belt in the direction along the crease is arranged so as not to overlap the crease,
The seat surface and the backrest are configured as a folding chair as a wheelchair that is fastened so as to be wound around the frame.
By doing so, it is possible to provide a wheelchair that is easy to fold while applying various features described above and having excellent strength and durability.

  The present invention does not necessarily include all the various features described above, and may be configured by omitting or combining some of them as appropriate.

It is explanatory drawing which shows schematic structure of the wheelchair as a prior art. It is explanatory drawing which shows schematic structure of the wheelchair in an Example.

  Hereinafter, an embodiment of the present invention will be described taking as an example a wheelchair.

FIG. 2 is an explanatory diagram illustrating a schematic configuration of the wheelchair 1 in the embodiment. Description of a normal configuration as a wheelchair such as a wheel will be omitted, and only a portion related to the present invention will be described below.
As shown in FIG.2 (c), in the wheelchair 1 of an Example, the backrest 10 and the seat surface 20 are fastened so that it may wind around the frames 30 and 31, respectively. As a method for fastening the seat belt wound around the frame, scissors, sewing, screws and the like can be used. If sufficient strength can be secured, the seat belt may be fastened by adhesion, welding, or the like.
By performing this fastening method, the strength and durability of the seating surface 20 and the backrest 10 and the attachment portions to the frames 30 and 31 can be improved.
Such a fastening method may be applied to only one of the seat surface 20 and the backrest 10.

  The frame 30 is provided with a folding mechanism 32 for folding the wheelchair 1 in the width direction. At the time of folding, the backrest 10 is bent along the center line L1, and the seating surface 20 is bent along the center line L2.

FIG. 2A schematically shows the structure of the backrest 10.
The backrest 10 is formed by knitting a seat belt for an automobile into a cloth shape. In the drawing, a plurality of seat belts 11 that are hatched in the vertical direction are arranged in a direction along a fold line L1 when the backrest 10 is folded. In the figure, a plurality of seat belts 12 that have been hatched in the lateral direction are arranged in a direction perpendicular to a fold line L1 when the backrest 10 is folded (hereinafter also referred to as a width direction). The seat belts 11 and 12 may be disposed so as to obliquely intersect the fold line L1.
Although an unused seat belt may be used, in this embodiment, a seat belt removed from an automobile that has become a scrapped vehicle is used in order to effectively use the waste material.
FIG. 2B shows an enlarged part of the backrest 10. As shown in the figure, the longitudinal seat belts 11a and 11b and the lateral seat belts 12a, 12b, and 12c are alternately knitted in a cloth-like manner. By doing so, the backrest 10 is constituted by a cloth-like material knitted with a seat belt.
Since the seat belt is a material excellent in strength and durability, it functions as a reinforcing material in the present invention. In this embodiment, the reinforcing material and the backrest 10 are integrally formed by knitting the seat belt into a cloth shape. However, the cloth-like material shown in FIG. 2A may be used as a reinforcing material for the backrest 10 and a backrest such as cushioning may be separately attached to this surface.

As shown in FIG. 2A, the seat belt 11 in a direction along the crease (hereinafter sometimes referred to as a longitudinal direction) is disposed so as not to overlap the crease L1. That is, the seat belts 11c and 11d adjacent in the vicinity of the center are arranged so that the boundary is the crease L1. When the seat belt is provided so as to overlap the fold L1, it may be difficult to fold, but as described above, the ease of folding can be ensured by disposing the fold L1. The gap between the seat belts 11c and 11d near the center may be provided wider than the gap between the other seat belts in the vertical direction.
In the above-described configuration, the cloth-like material shown in FIG. 2A is first prepared, and the longitudinal seat belts 11c and 11d are attached to the frame 30 while adjusting the positions so that they do not overlap the crease L1. Can be realized.

FIG. 2D shows the configuration of the seating surface 20. Similarly to the backrest 10, the seat surface 20 is also made of a material obtained by knitting a seat belt for an automobile into a cloth shape. In the drawing, a plurality of seat belts 21 that have been hatched in the vertical direction are arranged in a direction along the fold line L2 when the seating surface 20 is folded (hereinafter also referred to as the front-rear direction). In the figure, a plurality of laterally hatched seat belts 22 are arranged in a direction (hereinafter sometimes referred to as a width direction) perpendicular to a fold line L2 when the seating surface 20 is folded. The seat belts 21 and 22 may be disposed so as to obliquely intersect the fold line L2.
Similarly to the backrest 10, the seating surface 20 is also formed integrally with the reinforcing material. However, the cloth-like material shown in FIG. 2B may be used only as a reinforcing material for the seating surface 20, and a seating surface such as cushioning may be separately attached to this surface.

As shown in FIG. 2D, the seat belt 21 in the front-rear direction is disposed so as not to overlap the crease L2. That is, the seat belts 21c and 21d adjacent to each other near the center are arranged so that the boundary is the crease L2. When the seat belt is provided so as to overlap the fold L2, it may be difficult to fold, but as described above, the ease of folding can be ensured by disposing the fold L2. You may make it provide the clearance gap between the seatbelts 21c and 21d near the center wider than the clearance gap of the other seatbelts of the front-back direction.
In the above-described configuration, the cloth-like material shown in FIG. 2D is first prepared, and the seat belts 21c and 21d in the front-rear direction are attached to the frame 31 while adjusting the positions so as not to overlap the crease L1. Can be realized.

In an Example, the seat surface 20 and the backrest 10 may be comprised as another member, and may be comprised as an integral member which connected both.
The wheelchair 1 of the Example demonstrated above can improve intensity | strength and durability by utilizing a seatbelt for the seat surface 20 and the backrest 10. FIG.

The various features described in this embodiment are not necessarily all provided, and some of them can be omitted or combined as appropriate. Moreover, this invention is not limited to an Example, A various modified example can also be comprised.
(1) Although the example of the wheelchair was shown in the Example, as a folding chair in this invention, it is good also as a stroller. Moreover, you may comprise by the folding chair which does not have a wheel.
(2) In the embodiment, a cloth-like material using a seat belt is used for the backrest 10 and the seating surface 20, but the seat belt may be stretched in the width direction.
(3) The reinforcement by the seat belt may be provided only on one of the backrest 10 and the seating surface 20.
(4) The reinforcement with the seat belt may be provided not only on the backrest 10 and the seating surface 20 but also on only a part thereof.
(5) The seat belt is not limited to an automobile, and may be a seat belt of an aircraft, a ship, or the like.

  INDUSTRIAL APPLICABILITY The present invention can be used as a bedding for laying when a person sleeps in a supine posture.

DESCRIPTION OF SYMBOLS 1 Wheelchair 10 Backrest 11, 11a, 11b, 11c, 11d Seat belt 12, 12a, 12b, 12c Seat belt 20 Seat surface 21, 21c, 21d Seat belt 22 Seat belt 30, 31 Frame 32 Folding mechanism

Claims (9)

A folding chair,
A folding mechanism that folds so that a crease is formed in each surface of the seating surface and the backrest;
A folding chair provided with a reinforcing member formed by stretching a seat belt of a moving body in a direction intersecting with the fold in one or both of the seating surface and the backrest. The folding chair according to claim 1,
The reinforcing member is a folding chair arranged over the entire crease. The folding chair according to claim 1 or 2,
A folding chair in which the reinforcing material is provided on both the seating surface and the backrest. The folding chair according to any one of claims 1 to 3,
The folding chair is integrally formed with the reinforcing member by knitting a seat belt arranged in a direction intersecting with the crease and a direction along the crease in a cloth shape. The folding chair according to claim 4,
A folding chair in which the seat belt in the direction along the fold is arranged so as not to overlap the fold. The folding chair according to any one of claims 1 to 5,
A frame for supporting the seating surface and the backrest;
The reinforcing chair is a folding chair that is fastened around the frame. The folding chair according to any one of claims 1 to 6,
The reinforcing member is a folding chair that is a seat belt for an automobile. The folding chair according to any one of claims 1 to 7,
The folding chair is a folding chair that is a wheelchair. The folding chair according to claim 8,
The folding chair is a wheelchair;
A frame for supporting the seating surface and the backrest;
The folding chair has a folding mechanism that folds so that a crease is formed in the center in the width direction within each surface of the seating surface and the backrest,
The seat surface and the backrest are integrally formed with a reinforcing material by knitting a seat belt for an automobile arranged in a direction intersecting the crease and in a direction along the crease into a cloth shape,
The seat belt in the direction along the crease is arranged so as not to overlap the crease,
The folding chair, wherein the seating surface and the backrest are fastened around the frame.

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