JP2001245743A - Folding chair on which a plurality of persons can be seated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connected chair which is foldable and in which a plate material or the like having a stable design, not a cloth material, is used in a seat or a backrest. SOLUTION: If V-shaped legs 11a-11d are folded in left and right directions, a backrest plate 30a is turned clockwise about a backrest column 31a, as viewed from above, together with a seat plate 20a turned up so as to be parallel to the plate 30a, while a backrest plate 30b is turned counterclockwise about a backrest column 31b, as viewed from above, together with a seat plate 20b. A backrest plate 30c is turned clockwise about a backrest column 31c, as viewed from above, together with a seat plate 20c, while a backrest plate 30d is turned counterclockwise about a backrest column 31d, as viewed from above, together with a seat plate 20d, whereby the chair is folded so that the length thereof in the left and right directions is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002] The present invention relates to a structure of a folding chair on which a plurality of people can sit.

[0003]

[Prior art]

[0004] Conventionally, as a folding chair that can be seated by a plurality of persons, a foldable connected chair and a bench are known.

[0005] The basic structure of these conventional foldable connecting chairs and benches is such that, when used, a foldable frame constructed by combining links using round pipes spreads over the seats of the connecting chairs and benches. A backrest is formed, and when folded, a cloth material such as a canvas is stretched so as to follow the frame folding.

[0006]

[Problems to be solved by the invention]

[0007] As described above, in a conventional folding chair in which a plurality of persons can sit, the seat and the backrest are formed of a cloth material such as canvas.

[0008] The use of such a cloth material for the seat and the backrest is advantageous in terms of weight reduction and the like. However, on the other hand, the seat and the backrest made of such a cloth material are provided with a traditional non-foldable chair in terms of sitting comfort, stability given to the user, and luxury. There is a problem in that it is inferior to a seat portion or a backrest portion having a plate-like or other thickness that cannot be folded arbitrarily.

Accordingly, an object of the present invention is to provide a structure of a folding chair which can be used by a seat or a backrest which is thick and cannot be folded arbitrarily and which can be seated by a plurality of persons.

[0010]

[Means for Solving the Problems]

[0011] In order to achieve the above object, the present invention is a folding chair that can be seated by a plurality of people,

A laterally foldable leg frame forming a leg of the folding chair in use;

A plurality of laterally arranged partial seats supported in use by the legs to form a seat for a folding chair;

[0014] a plurality of partial backrests arranged laterally and equidistantly with the partial seats, the backrests being supported by the legs during use to form the backrest of the folding chair;

[0015] Each of the partial seats may be positioned between a position where the seating surface of the partial seating portion is substantially horizontal and a position substantially directly facing the backrest surface of the corresponding partial backrest in the lateral arrangement. Rotatable,
Connected to the corresponding partial backrest,

[0016] Of the plurality of partial backrests, at least
In a pair of adjacent backrests, a right backrest of the two backrests is positioned on the right side relative to the leg frame and relative to the leg frame. The left backrest of the two backrests is connected to the leg frame on the left side and relative to the leg frame on the left side of the two backrests. And a pivotable chair having a vertical axis as a rotation axis.

[0017] According to such a folding chair, the folding in the lateral direction corresponding to the two partial backrests includes the two partial seats corresponding to the two partial backrests. After the seat surface is flipped up to a position substantially opposite to the corresponding backrest surface of the corresponding backrest portion, following the folding of the leg frame field, the partial seat portion connecting the right partial backrest portion together, The rotation is performed by rotating the left part so as to move forward, and rotating the right part together with the partial seats connecting the left partial backrests together.

By such a folding, the lateral area corresponding to the two partial backrests can be compactly folded, while the individual partial backrests and the partial seats need to be folded during this folding. Absent.

[0019] Therefore, each of the partial backrests and the partial seats may be thick and cannot be arbitrarily folded.
By doing so, in a foldable chair that can be used by a plurality of people, it is possible to form a seat or backrest that is thick and cannot be arbitrarily folded.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of a foldable chair according to the present invention will be described by taking an example of application to a connection chair for four persons.

FIG. 1 shows the structure of the connecting chair according to the present embodiment.

FIGS. 1A and 1B show a state in which the connecting chair is used, in which a is a front view, b is a top view, d is a bottom view,
e is a right side view. The left side surface appears in the same manner as the right side surface.

In the figure, 10a and 10b are side frames, 11a
11d are V-shaped legs, 12a, 12ab, 12bc, 1
2cd, 12d are seat beams, 20a to 20d are seat plates, 30a
30d is a backing plate, 31a to 31d are backrest columns, 32
Reference numerals a to 32d denote moving back support pillars, reference numerals 40a to 40d denote limiter cloths, reference numerals 50a and 50b denote casters, and reference numerals 60a to 60d denote hinges.

Here, the side frame 10a and the seat beam 12a, and the side frame 10b and the seat beam 12d are fixedly connected. Also, the seat beam 12a, the back support pillar 31a, and the seat beam 12bc
And the back support pillar 31b, the seat beam 12bc and the back support pillar 31c, and the seat support 12d and the back support pillar 31d are fixedly connected.

The backrest moving columns 32a and 32b are rotatably connected about a vertical axis as a rotation axis.
2c and 32d are rotatably connected about a vertical axis as a rotation axis. The rotatably connected backrest moving columns 32a and 32b are assembled to the seat beam 12ab so as to be slidable back and forth on the seat beam, and the rotatably connected backrest moving columns 32c and 32d are , Seat beam 12cd
It is mounted so that it can slide back and forth on the seat beam.

The left and right sides of the back support plate 30a are rotatably mounted on the back support column 31a and the movable back support column 32a, respectively, using the support shaft as a rotation axis.
The left and right sides of the back support plate 31c are rotatably mounted on the back support column 31b and the movable back support column 32b, respectively, using the column as a rotation axis. The left and right sides of the backrest plate 30d are rotatably assembled to the backrest pillar 32c with the pillar as a rotation axis, and the backrest pillar 31d and the moving backrest pillar 32d, respectively.
Are rotatably supported with the column as a rotation axis.

The seat plate 20a is rotatably mounted on the back support plate 30a by a hinge 60a about a shaft parallel to the lower side of the back support plate 30a as a rotation axis, and the seat plate 20b is mounted on the back support plate 30b. And the back plate 30b by the hinge 60b.
The seat plate 20c is rotatably mounted on the backrest plate 30c by a hinge 60ca with the axis parallel to the lower side of the backrest plate 30c as the rotation axis. Assembled, and the seat plate 20d is
At 0d, the hinge 60d is rotatably mounted on a shaft parallel to the lower side of the backrest plate 30d as a rotation axis.

In use, the seat plate 20a is supported by being placed on the seat beams 12a and 12ab.
The seat plate 20b is supported by being placed on the seat beams 12ab and 12bc, and the seat plate 20c is supported by the seat beams 12bc and 12c.
The support plate 20d is supported by being placed on the seat beams 12cd and 12d.

Next, in the use state, each seat beam 12a, 1
2ab, 12b, 12bc, 12c, 12cd, 12d
Are side frames 10a, 10b and V-shaped legs 11a to
Supported by 11d.

Each of the V-shaped legs 11a to 11d comprises two links 111 and 112 which are rotatably connected at the lower end with a longitudinal axis as a rotation axis, and the upper end of each link 111, 112 has a corresponding seat beam. Are rotatably connected to each other with a longitudinal axis as a rotation axis. That is, the link 111 of the V-shaped leg 11a is rotatably connected to the seat beam 12a about the longitudinal axis as a rotation axis, and the link 112 of the V-shaped leg 11a is rotated around the seat beam 12ab with the longitudinal axis as the rotation axis. The link 111 of the V-shaped leg 11b is connected to the seat beam 12ab so as to be rotatable about the longitudinal axis as a rotation axis, and the link 112 of the V-shaped leg 11b is connected to the seat beam 12bc in the longitudinal direction. The link 111 of the V-shaped leg 11c is rotatably connected to the seat beam 12bc as a rotation axis, and the link 112 of the V-shaped leg 11c is connected to the seat beam 12cd. The link 111 of the V-shaped leg 11d is connected to the seat beam 12cd so as to be rotatable about the longitudinal axis.
The link 112 of the V-shaped leg 11d is rotatably connected to the seat beam 12d about the longitudinal axis as a rotation axis.

Next, the limiter cloth 40a is connected to the seat beams 12a and 12a.
b, and the limiter cloth 40b is
The limiter fabric 40c is stretched between the seat beams 12bc and 12cd, and the limiter fabric 40d is stretched between the seat beams 12bc and 12d.

[0033] Finally, the casters 50a, 50b
Are rotatably mounted on the side frames 10a and 10b, respectively, with the left-right axis as a rotation axis.

Hereinafter, the folding of such a connection chair will be described.

At the time of folding, first, as shown in FIG.
The seat plates 20a to 20d are flipped up. FIG. 2 shows a state in which the respective seat plates 20a to 20d of the connecting chair are flipped up, in which a is a front view, b is a top view, and c is a right side view.

That is, the seat plates 20a to 20d are
Using ~ 60d, the seating surface of each seat plate 20a ~ 20d,
The backrests 30a to 30d are rotated to a position directly facing the backrest. That is, the plate surfaces of the seat plates 20a to 20d are flipped up to an angle parallel to the plate surfaces of the backrest plates 30a to 30d.

Next, as shown in FIG. 3, the connecting chair is compressed in the left-right direction.

FIGS. 3A and 3B show the connected chair in the state of the pressing / shrinking process, in which a is a front view, b is a top view, and c is a right side view.

That is, when a compressing force is applied to the connecting chair in a state where the seat plates 20a to 20d are flipped up, the link 112 of each of the V-shaped legs 11a to 11d becomes clockwise when viewed from the front. It rotates counterclockwise when viewed from the front and folds left and right. Here, for reference, d in the figure schematically shows the shapes of the links 111 and 112 of the V-shaped legs 11a to 11d. In the figure,
The direction of the arrow is the forward direction.

When each of the V-shaped legs 11a to 11d is folded in the left-right direction, the seat beams 12a to 12a follow the folding.
b, 12ab-12bc, 12bc-12cd, 12c
The distance between d-12d is reduced, and the limiter cloths 40a-40
d is collapsed in the left-right direction by gravity without the tension.

When each of the V-shaped legs 11a to 11d is folded in the left and right directions, the back plate 30a follows the back leg 30a together with the seat plate 20a and the back support column 31a as a rotation axis. When viewed from above, the backing plate 30b rotates counterclockwise as viewed from above, with the backing plate 30b and the seating plate 20b and the backrest column 31b as a rotation axis, and the backing plate 30c and the seating plate 20c together. The column 31c is rotated in a clockwise direction as viewed from above with the axis of rotation as the rotation axis.
Is rotated counterclockwise when viewed from above, and is folded so that the length in the left-right direction is reduced.

At this time, the moving back support columns 32a to 32d are provided with the seat beams 12ab,
The movement in the forward direction is guided by 12cd. That is, as shown by e in the figure, the seat beams 12ab, 12cd
A guide rail 322 having a guide groove extending in the front-rear direction.
Is provided at a lower end of each of the movable backrest columns 32a to 32d with a convex portion 321 that moves in the front-rear direction while being accommodated in the guide groove 322.

When the folding is completed in this way, the connecting chair becomes a compact form, as shown in FIG. 4, and can be stored without requiring a large space, and can be easily transported. Here, FIG. 4 illustrates a folded connection chair, in which a is a front view, b is a top view,
c is a right side view.

Here, the casters 50a and 50b are provided so that the folded connecting chair can be transported more easily. As shown in FIG.
b, normally, the side frames 10a, 10b, and the casters 50a, 50b located at the information position from the lower end positions of the V-shaped legs 11a to 11d are placed in the folded side frames. 10a, 10b, V
It can be arranged below the lower end positions of the character-shaped legs 11a to 11d. Therefore, the carrier tilts the connecting chair a little backward, so that the casters 50a,
By using the 50b, the connecting chair can be moved with less labor.

Now, the connecting chair folded in this way is
In order to return to the use state of FIG. 1, the procedure reverse to the above-mentioned folding may be performed. At this time, the limiter cloths 40a-40
d indicates that each of the V-shaped legs 11a to 11d is a seat beam 1 shown in FIG.
V is set so that 2a, 12ab, 12bc, 12cd, and 12d do not spread beyond the position supporting each seat plate 20a to 20d.
The spread of the character-like legs 11a to 11d is limited.

By the way, in the above-described embodiment, the leg portions are configured to have the same height when folded and used when using an appropriate structure. You may make it usable as a connection chair for people.

In such a case, if V
When using the link configuration of the character-shaped legs 11a to 11d,
For example, V-shaped legs 11a to 11d as shown in FIG.
What is necessary is just to provide the auxiliary leg 100 for height adjustment in a lower end.

FIG. 5 shows the connecting chair in a state where only two persons are folded, in which a is a front view, and b is a V-shaped leg 11a.
11a to 11d schematically show the shapes, c1 shows the lower part of the V-shaped legs 11a to 11d when the height is increased, and d1 shows the lower part of the V-shaped legs 11a to 11d when the height is increased. .

As shown in the figure, the auxiliary legs 100 are c2, d2
As shown in the cross-sectional end cross-sectional view by the CC cross-section line and the DD cross-section line, the member has a substantially semicircular cross section. In addition, as shown in C1 and D1, the auxiliary leg 1 is rotated.
00 The height of the lower end portion changes, whereby the V-shaped legs 11a-
In order to adjust the height of the lower end of 11d, it is pivotally attached to the lower part of the link 111 so as to be rotatable about the longitudinal axis.

[0050] Therefore, by using such auxiliary legs 100, as shown in Fig. A, the height is reduced for the two folded members and the height is increased for the remaining two members, thereby connecting the two members. The chair can be used as a connecting chair for two persons by folding only two persons.

As described above, one embodiment of the present invention has been described.

[0052] Although the above description has been made by taking as an example the application to a connection chair for four people, as will be understood from the above description, the folding structure of the connection chair according to the present embodiment is as follows.
The unit is equivalent to two people. Therefore, it is possible to configure a connecting chair for an arbitrary number of persons by using two persons as a unit. For example, a connection chair for two, a connection chair for six, and a connection chair for eight can be configured.

The present embodiment may be applied to a structure such as a bench for a plurality of people or a bed.
In addition, the lateral length of the seat plate or the backing plate does not necessarily have to be equivalent to one person, and the seating surface and the backing surface equivalent to one person are made up of a plurality of seating plates and the same number of backing plates. Or the seating surface and the backrest surface corresponding to a plurality of seats may be constituted by one seatplate and the backrest plate.

[0054]

As described above, according to the present invention, there is provided a folding chair structure in which a plurality of persons can be seated, which can use a seat portion and a backrest portion which are thick and cannot be arbitrarily folded. can do.

[Brief description of the drawings]

FIG. 1 is a view showing a form when a connecting chair according to an embodiment of the present invention is used.

FIG. 2 is a view showing a state of the connecting chair according to the embodiment of the present invention when the seat plate is flipped up.

FIG. 3 is a view showing a form in a folding process of the connecting chair according to the embodiment of the present invention.

FIG. 4 is a view showing a folded state of the connecting chair according to the embodiment of the present invention.

FIG. 5 is a view showing a form of a connection chair provided with a height adjusting auxiliary leg according to the embodiment of the present invention.

[Explanation of symbols]

10a, 10b Side frame, 11a-11d V-shaped legs, 12a, 12ab, 12bc, 12cd, 12d
Seat beam, 20a to 20d Seat plate, 30a to 30d backing plate, 31a to 31d Back support column, 32a to 32d Moving back support column, 40a to 40d Limiter cloth, 50a, 50
b Casters, 60a-60d hinges.

Claims (3)

[Claims] 1. A folding chair that can be seated by a plurality of persons, comprising a laterally foldable leg frame that forms a leg of the folding chair in use, and a folding chair supported by the leg in use. A plurality of laterally arranged partial seats forming a seat; and, in use, supported by the legs to form a backrest of the folding chair, laterally at the same spacing as the partial partial seats. A plurality of partial backrests arranged, wherein each of the partial seats is a backrest of a partial backrest corresponding to the position where the seating surface of the partial seat is substantially horizontal and the horizontal arrangement thereof. Between the surface and a position directly opposite to the surface, rotatably connected to the corresponding partial backrest, and at least one set of two adjacent backrests of the plurality of partial backrests In the part, of the two partial backrests The side backrest portion is connected to the leg frame on the right side so as to be rotatable around a vertical axis relative to the leg frame as a rotation axis. The left back portion is connected to the leg frame on the left side so as to be rotatable about a vertical axis relative to the leg frame as a rotation axis. Chair. 2. The folding chair according to claim 1, wherein a left portion of a right partial back portion of the two partial back portions and a left portion of the two partial back portions. A folding chair, wherein the right side of the backrest is supported by the leg frame so as to be movable in the front-rear direction relative to the leg frame. 3. The folding chair according to claim 1, wherein the one partial seat and the one partial backrest corresponding to the partial seat are in use with a seating surface for one person. A folding chair characterized by forming a backrest surface.