JP3788455B2 - Folding chair - Google Patents

Description

  The present invention relates to a folding chair.

  Recently, in order to diversify outdoor leisure and enable various hobbies, there is an increasing demand for a folding chair that can be relaxed and foldable in a rod shape. If it can be folded into a rod shape, for example, even when there is a limited storage space such as an RV, it can be mounted on the vehicle, which is very convenient.

  Conventionally, as described in JP-A-2002-253379, JP-A-2002-17501, and the like, there is a folding chair in which a backrest and a seating surface are made of a hard plate material and a flexible cushion is placed thereon.

  However, in the folding chair with such a structure, the posture of the person sitting is fixed and cannot be held for a long time. In addition, the contact area between the seated person and the folding chair is very small, and there is a problem that the buttocks and back corresponding to the contact part hurt. Moreover, even if it can be folded flat with the minimum height, the width and depth cannot be reduced, which is inconvenient for storage.

  In order to solve such a problem, as described in JP-A-2002-233429 and JP-A-2001-78854, the backrest and the seating surface are made of cloth, and the left and right ends are locked to the members. The folding chair is devised. The cloth body that locks the left and right can support the collar portion having the maximum load with a wide contact area. However, the folding chair having such a structure has a problem that the backrest is sufficiently long and cannot be tilted backward in order to obtain stability, and the upper body is easily fatigued. Moreover, even if it can be folded flat with the minimum height, the problem that the width and depth cannot be reduced has not been solved.

  In particular, in order to improve the seating comfort, as described in JP 2000-135144 A, JP 2000-316660 A, JP 2000-287777 A, and JP 8-187138 A, the user can sit from the backrest. The surface is composed of an integral cloth body, and contrivances have been made to maximize the contact area between the folding chair and the seated person. They can be folded into bars with minimal height and width. However, the armrest that can support from the elbow to the hand and can put the whole body weight on the standing up movement could not be folded in the same direction as the leg. Furthermore, in order to fold it into a rod shape, fix the four corners of the cloth body to the member, or lock the upper and lower ends to the member, and hang the cloth body from the back or shoulder to the waist, hips, and thighs. It will be supported to wrap. However, while the posture can be freely changed, the lumbar region and the buttocks portion with the largest load sink, and the lumbar region is broken, the internal organs are compressed, blood flow is deteriorated, and a long sitting posture becomes difficult.

  A person can sit relaxed if his thigh is close to horizontal, his knees are slightly upward, and his back is tilted backwards. By sitting in this way, the spine of the person sitting is maintained in a loose S-shape, the waist is stretched, and the hip joint between the femur and pelvis is broken. Therefore, there is no feeling of pressure especially in the viscera, and it is possible to sit for a long time without disturbing blood flow.

A bag portion is provided at both ends of the cloth body having a seating surface and a back surface, the bag portion is passed through two L-shaped members arranged in parallel, and the L-shaped member is connected to a leg of a link structure, There are also folding chairs that are supported by legs that are supported by a reinforcing structure and that enable the desired posture as described above. However, the two L-shaped members require structural strength, and this structure must be maintained when stored. Even if it can be folded flat with a minimum width, The problem remains that depth cannot be reduced.
JP 2002-253379 A JP 2002-17501 A JP 2002-233429 A JP 2001-78854 A JP 2000-135144 A JP 2000-316660 A JP 2000-287777 A JP-A-8-187138

  An object of the present invention is to provide an armrest that can support from the elbow to the hand and can apply the whole body weight when standing up, and can fold the armrest in the same direction as the leg, The seat surface that can support the knee slightly upward and the back surface that supports the back and inclines backward is a continuous flexible cloth body, and the cloth body is pulled to the left and right. An object of the present invention is to provide a folding chair that can be supported by a member and can be folded into a rod shape.

  In one aspect of the folding chair of the present invention, the seat surface portion and the back portion inclined rearward are formed of a cloth body, and the upper half supports the left end and the right end of the back portion, and the lower end of each leg configuration. One end of each of the left long leg and the right long leg serving as the front foot is pivotally attached to substantially the center of each of the left long leg and the right long leg. It has a left seat member and a right seat member to support. The left long leg and the left seat member, and the right long leg and the right seat member can be folded, respectively.

  Further, one end of the leg structure is rotatably attached to the front end of the left seat member and the right seat member, and the other end is turned to the front foot of the left leg and right leg. It is desirable to further have a left front column and a right front column that are movably attached, and that the left front column and the right front column have a structure that can be expanded and contracted.

  In a different aspect of the folding chair of the present invention, the seat surface portion and the rear portion inclined rearward are formed of a cloth body, and the leg structure includes a left leg structure, a right leg structure, a rear leg structure, and a left armrest described below. It consists of a structure, a right armrest structure and a front leg structure.

  In the left leg structure, the upper half can hold the left side of the back of the cloth body, the lower leg is the left forefoot, and one end is pivotable to the approximate center of the left leg. The left short leg is attached and the other end is the left hind leg.

  The right leg structure can hold the right side of the back part of the cloth body at the upper half, the right long leg with the lower end as the right forefoot, and one end pivotable to the approximate center of the right long leg. The right short leg is attached and the other end is the left hind leg.

  The rear leg structure has one end pivotably attached to the upper part of the left long leg and the other end pivotably attached to the right short leg, and one end is the upper part of the right long leg. The lower left hind leg and the lower left hind leg are attached to each other at the intersection. It is possible to move.

  The left armrest structure includes a left front pillar body having a structure in which the lower part can be expanded and contracted, a left seat surface member capable of holding one left end side of the seat surface portion of the cloth body, a left armrest body, and a left link body. The lower end of the left front column is pivotally attached to the lower end of the left long leg, and the front of the left seat member is pivotably attached to the other end, and the left armrest has a left link at the rear. The front link body is pivotably attached to one end of the body, the front is pivotally attached to the upper end of the left front pillar body, and the other end of the left link body is pivotally attached to the approximate center of the left long leg body.

  The right armrest structure includes a right front pillar body having a structure in which the lower part can be expanded and contracted, a right seat member that can hold the right end side of the seat surface portion of the cloth body, a right armrest body, and a right link body. The lower end of the right front column is pivotally attached to the lower end of the right long leg, and the front of the right seat member is pivotably attached to the other end, and the right armrest is rearwardly linked to the right link. The front link body is pivotally attached to one end of the body, the front is pivotally attached to the upper end of the right front pillar body, and the other end of the right link body is pivotally attached to the approximate center of the right long leg body.

  The front leg structure has one end pivotably attached to the upper side of the right front pillar, the other end pivotably attached to the lower end of the left long leg, and one end above the left front pillar. It consists of a right-lowering front leg that is pivotably attached to the lower end and is pivotally attached to the lower end of the right long leg.The left-lowering front leg and the right-lowering front leg rotate with each other at the intersection. It is possible to move.

  The rear of the left seat member is pivotally attached to the approximate center of the left long leg, and the rear of the right seat member is pivotally attached to the approximate center of the right leg. The left seat member and the left armrest can be folded together with the right long leg member, the right seat member and the right armrest, respectively.

  Furthermore, the left front pillar body and the right front pillar body have a rod-shaped member whose lower end is rotatably attached to the lower end of the left long leg body or the right long leg body, and a hole larger than the outer shape of the rod-shaped member, Further, it is desirable that the rod-like member has a telescopic nested structure composed of a coreless member that is slidable in the axial direction.

  In addition, the front leg structure and / or the rear leg structure has a hole structure or a concave structure through which the other leg penetrates in the center of one leg, and the shaft that communicates the two through the hole structure or the concave structure. It is desirable to be able to rotate relative to each other.

  In a different aspect of the folding chair of the present invention, the folding chair is a folding chair in which a seat surface portion and a back portion inclined backward are formed of a continuous cloth body, and the leg configuration includes a left leg structure, a right leg structure described below, It consists of a rear leg structure, a left armrest structure, a right armrest structure, and a front leg structure.

  In the left leg structure, the upper half can hold the left side of the back of the cloth body, the lower leg is the left forefoot, and one end is pivotable to the approximate center of the left leg. The left short leg is attached and the other end is the left hind leg.

The right leg structure can hold the right side of the back part of the cloth body at the upper half, the right long leg with the lower end as the right forefoot, and one end pivotable to the approximate center of the right long leg. The right short leg is attached and the other end is the right hind leg.

  One end of the left seat member that supports the left end of the seat surface portion is pivotally mounted at the approximate center of the left long leg body, and the right end of the seat surface portion is supported at the approximate center of the right long leg body. One end of the right seat member is rotatably attached, and the left long leg and the left seat member, and the right long leg and the right seat member can be folded, respectively.

  In addition, the rear leg structure has one end pivotably attached to the upper part of the left long leg, the other end pivotably attached to the right short leg, and one end of the right long leg. And a lower left rear leg that is pivotably attached to the left short leg, and has a hole structure through which the other penetrates at the center. It is desirable that they can be rotated with respect to each other by a shaft passing through the hole structure and communicating with each other.

  The left armrest structure consists of a left front pillar body with a telescopic structure that allows the lower part to expand and contract, a left seat surface member that can hold the left end of the seat surface portion of the cloth body, a left armrest body, and a left link body. The lower end of the column is pivotally attached to the lower end of the left long leg, and the other end of the left seat member is pivotally attached near the other end. The front link body is pivotably attached to one end of the body, the front is pivotally attached to the upper end of the left front pillar body, and the other end of the left link body is pivotally attached to the approximate center of the left long leg body. The right armrest structure consists of a right front pillar body with a telescopic structure that allows the lower part to expand and contract, a right seat member that can hold the right edge of the seat surface portion of the cloth body, a right armrest body, and a right link body. The lower end of the right long leg is pivotably attached to the lower end of the right leg, the other end of the right seat member is pivotally attached to the other end, and the right armrest has a right link body at the rear. It is desirable that the front end is pivotably attached to one end, the front is pivotably attached to the upper end of the right front pillar body, and the other end of the right link body is pivotally attached to the approximate center of the right long leg.

  Furthermore, the front leg structure has one end pivotably attached to the upper side of the right front pillar, the other end pivotably attached to the lower end of the left long leg, and one end of the left front pillar. A hole structure that is pivotably attached to the upper side and has a lower-end front leg that is pivotally attached to the lower end of the right long leg, and the other has a hole passing through the other in the center. It is desirable that they can be rotated with respect to each other by a shaft passing through the hole structure and communicating with each other.

  According to the present invention, the armrest can be supported from the elbow to the hand, and the armrest that can put the weight of the whole body when standing up is provided, the armrest can be folded in the same direction as the leg, and the thigh is horizontally leveled. The seat surface that can support the knee slightly upwards and the back surface that supports the back and tilts backward is a continuous flexible cloth body, and the member is stretched to the left and right. It is possible to provide a folding chair that can be supported and folded in a rod shape.

  The present invention is not limited to the configuration and shape shown in the best mode described below.

  An embodiment of the present invention will be described with reference to the drawings. 1 to 4 show an open leg state of a folding chair according to an embodiment of the present invention. FIG. 1 is a right side view, FIG. 2 is a front view, and FIG. 3 is a left side view. FIG. 4 is a rear view.

  The cloth body (10) is a continuous flexible cloth body, a seat surface portion (10a) that supports the user's thigh, and a back surface portion (10b) that is inclined rearward and supports the user's back. It consists of. Any known material or sewing may be used.

  The frame structure of the folding chair includes a left leg structure, a right leg structure, a rear leg structure, a left armrest structure, a right armrest structure, and a front leg structure.

  The left leg structure has a left long leg (21) whose upper half can hold one side of the left end of the back part (10b) of the cloth body (10) and whose lower end is the left front leg (62), and one end is The left long leg (21) is attached to the substantially center of the left long leg (21a) so as to be rotatable (21a), and the other end includes a left short leg (22) serving as a left rear leg (64). In the illustrated example, the foot (62) is attached to the front leg structure described later, but either may be used. A pair of flat members (24) may be fixed to the ends of the left short legs (22), and the flat members (24) may be rotatably attached to the left long legs (21). The flat member (24) is attached to a left seat surface member (23) to be described later so as to be rotatable.

The right leg structure has a right long leg (26) whose upper half can hold one side of the right end of the back portion (10b) of the cloth body (10) and whose lower end is the right front leg (61), and one end is The right long leg (26) is pivotally mounted (26a) at the approximate center, and the other end includes a right short leg (27) which serves as a right rear leg (63). In the illustrated example, the foot (61) is attached to the front leg structure described later, but either may be used. The right short leg (27) may be configured such that a pair of flat members (29) are fixed to the ends and the flat member (29) is rotatably attached to the right long leg (26). The flat member (29) attaches a right seat member (28), which will be described later, in a rotatable manner.

  In the rear leg structure, one end is attached to the upper part of the left long leg (21) so as to be rotatable (21c) and the other end is attached to the right short leg (27) so as to be rotatable (27b). The leg (31) and one end are attached to the upper part of the right long leg (26) to be rotatable (26c), and the other end is attached to the left short leg (22) to be rotatable (22b), The pair of flat members (34) and the two rod-like members (32), (33) are formed as an integral left lower rear leg. Therefore, it has a hole structure through which the lower right hind leg body (31) passes in the center of the lower left hind leg body. The lower right hind leg body (31) and the left lower hind leg body can be rotated relative to each other by an axis (31a) passing through the hole structure and communicating with both.

  The left armrest structure includes a left front pillar body (42) having a telescopic structure in which the lower part can be expanded and contracted, a left seat surface member (23) capable of holding one left end of the seat surface part (10a) of the cloth body (10), and a left armrest It consists of a body (41) and a left link body (43).

  Further, as shown in the simplified diagram showing the left side in FIG. 6, the left front column (42) has a rod-like member (42c) attached to the lower end of the left long leg (21) so as to be rotatable (42a). The telescopic nesting structure has a hole larger than the outer shape of the rod-shaped member (42c), and the core-shaped member (42b) in which the rod-shaped member (42c) is slidable in the axial direction. The right front pillar (47) has a similar structure.

  In this way, the left front pillar (42) and the right front pillar (47) have a nested structure, so that the body weight of the whole body is horizontally increased during the standing up motion, and the left armrest (41) and the right armrest (46 ) Can be stably supported, and when folded, the left front column (42) and the right front column (47) are extended by the nesting structure, and the left armrest (41) and the right armrest (46) Folds in the same direction.

  The lower end of the left front pillar (42) is pivotably attached (42a) to the lower end of the left long leg (21), and the front of the left seat member (23) is pivotable toward the other end ( 23b), the left armrest (41) is attached to the left link body (43) at one end of the left link body (43) (41b) and the front is turnable to the upper end of the left front pillar (42) ( 41a), and the other end of the left link body (43) is pivotably attached (43a) to the approximate center of the left long leg body (21).

  The right armrest structure includes a right front pillar body (47) having a nested structure in which the lower part can be expanded and contracted, a right seat member (28) capable of holding one right end of the seat surface portion (10a) of the cloth body (10), and a right armrest It consists of a body (46) and a right link body (48).

  The lower end of the right front pillar (47) is pivotably attached to the lower end of the right long leg (26) (47a), and the front of the right seat member (28) is pivotable toward the other end ( 28b), the right armrest (46) is attached to the right link body (48) at one end of the right link body (46b) and the front is turnable to the upper end of the right front pillar (47) ( 46a), and the other end of the right link body (48) is pivotally attached (48a) to the approximate center of the right long leg body (26).

  The front leg structure has one end attached to the upper right column (47) so as to be rotatable (51b) and the other end attached to the lower end of the left long leg (21) (51c). The lower front leg (51) is attached to one end of the left front pillar (42) so as to be pivotable (53a) and the other end is pivotable to the lower end of the right long leg (26) (52a). A pair of flat members (54) and two rod-shaped members (52), (53) are attached to a lower right front leg body. Therefore, it has a hole structure through which the lower left front leg (51) passes in the center of the lower right front leg. The right-lowering front leg and the left-lowering front leg (51) are rotatable with respect to each other by an axis (51a) that passes through the hole structure and communicates the two.

  As a member to be used, a known lightweight material such as an aluminum alloy is used, and a known high-strength material such as stainless steel is used for a plate member and a shaft member which are rotatable. The foot is preferably made of hard synthetic rubber, and synthetic rubber or artificial resin is preferably attached to the end of the member.

  FIG. 5 is a perspective view showing a state in which the folding chair of this embodiment is folded. The cloth body is not shown for explanation.

  As shown, the left long leg (21), the left seat member (23) and the left armrest (41), the right long leg (26), the right seat member (28) and the right armrest (46). Are folded in the same direction so that the depth direction is minimized, and are folded so that the width direction is minimized by the rear leg structure and the front leg structure, thereby forming a rod shape as a whole.

It is a right view which shows the folding chair of one Example of this invention. It is a front view which shows the folding chair of one Example of this invention. It is a left view which shows the folding chair of one Example of this invention. It is a rear view which shows the folding chair of one Example of this invention. It is a perspective view which shows the state which folds the folding chair of one Example of this invention, and illustration was abbreviate | omitted for description. It is the simplified diagram which showed the left side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cloth body 10a Seat surface part 10b Back surface part 21 Left long leg body 21a, 21c, 22b, 23b Rotating shaft 22 Left short leg body 23 Left seat surface member 24, 29, 34, 54 Flat member 26 Right long leg body 26a , 26c, 27b, 28b Rotating shaft 27 Right short leg 28 Right seat member 31 Right lowering leg 31a Rotating shaft 32, 33 Rod member 41 Left armrest 41a, 41b, 42a, 43a Rotating shaft 42 Front left Column 42b Coreless member 42c Rod-shaped member 43 Left link body 46 Right armrest body 46a, 46b, 47a, 48a Rotating shaft 47 Right front column body 48 Right link body 51 Left lowering front leg body 51a, 51b, 51c, 52a, 53a times Moving shaft 52, 53 Bar-shaped member 61, 62, 63, 64 Feet

Claims (6)

It is a folding chair that forms a seat surface portion and a back portion that is inclined rearward with a cloth body,
Leg configuration consists of left leg structure, right leg structure, rear leg structure, left armrest structure, right armrest structure and front leg structure,
In the left leg structure, the upper half can hold the left side of the back of the cloth body, the lower leg is the left forefoot, and one end is pivotable to the approximate center of the left leg. It consists of a left short leg that is attached and the other end is the left hind leg,
The right leg structure can hold the right side of the back part of the cloth body at the upper half, the right long leg with the lower end as the right forefoot, and one end pivotable to the approximate center of the right long leg. It consists of a right short leg that is attached and the other end is the right hind leg,
The rear leg structure has one end pivotably attached to the upper part of the left long leg and the other end pivotably attached to the right short leg, and one end is the upper part of the right long leg. The lower left hind leg and the lower left hind leg are attached to each other at the intersection. Is movable,
The left armrest structure consists of a left front pillar body with a structure in which the lower part can expand and contract, a left seat surface member that can hold the left end side of the seat surface part of the cloth body, a left armrest body, and a left link body,
The lower end of the left front column is pivotally attached to the lower end of the left long leg, and the front of the left seat member is pivotably attached to the other end, and the left armrest has a left link at the rear. It is pivotally attached to one end of the body, the front is pivotally attached to the upper end of the left front pillar, and the other end of the left link body is pivotally attached to the approximate center of the left long leg,
The right armrest structure consists of a right front pillar body with a structure in which the lower part can expand and contract, a right seat surface member that can hold the right end side of the seat surface part of the cloth body, a right armrest body, a right link body,
The lower end of the right front column is pivotally attached to the lower end of the right long leg, and the front of the right seat member is pivotably attached to the other end, and the right armrest is rearwardly linked to the right link. It is pivotally attached to one end of the body, the front is pivotally attached to the upper end of the right front pillar, and the other end of the right link body is pivotally attached to the approximate center of the right long leg,
The front leg structure has one end pivotably attached to the upper side of the right front pillar, the other end pivotably attached to the lower end of the left long leg, and one end above the left front pillar. It consists of a right-lowering front leg that is pivotably attached to the lower end and is pivotally attached to the lower end of the right long leg. Is movable,
The rear of the left seat member is pivotally attached to the approximate center of the left long leg, and the rear of the right seat member is pivotally attached to the approximate center of the right leg. The folding chair is characterized in that the left seat member and the left armrest, and the right long leg member, the right seat member and the right armrest can be folded. The left front column and the right front column have a rod-like member whose lower end is rotatably attached to the lower end of the left long leg or the right long leg, and a hole larger than the outer shape of the rod-like member. The folding chair according to claim 1 , wherein the folding chair is a telescopic nested structure including a core hollow member that is slidable in an axial direction. The front leg structure and / or the rear leg structure have a hole structure or a concave structure through which the other leg penetrates in the center of one leg, and pass through the hole structure or the concave structure and communicate with each other on an axis. The folding chair according to claim 1 , wherein the folding chair is rotatable. It is a folding chair that is formed of a continuous cloth body with a seat surface portion and a back portion that is inclined rearward.
Leg configuration consists of left leg structure, right leg structure, rear leg structure, left armrest structure, right armrest structure and front leg structure,
In the left leg structure, the upper half can hold the left side of the back of the cloth body, the lower leg is the left forefoot, and one end is pivotable to the approximate center of the left leg. It consists of a left short leg that is attached and the other end is the left hind leg,
The right leg structure can hold the right side of the back part of the cloth body at the upper half, the right long leg with the lower end as the right forefoot, and one end pivotable to the approximate center of the right long leg. It consists of a right short leg that is attached and the other end is the right hind leg,
One end of the left seat member that supports the left end of the seat surface portion is pivotally mounted at the approximate center of the left long leg body, and the right end of the seat surface portion is supported at the approximate center of the right long leg body. One end of the right seat member is rotatably attached, the left long leg and the left seat member, and the right long leg and the right seat member can be folded respectively.
The rear leg structure has one end pivotably attached to the upper part of the left long leg and the other end pivotably attached to the right short leg, and one end is the upper part of the right long leg. And the other end of the lower left leg is pivotally attached to the left short leg, and has a hole structure through which the other penetrates at the center of either It is possible to rotate with the shaft that passes through the hole structure.
The left armrest structure consists of a left front pillar body with a nested structure that allows the lower part to expand and contract, a left seat surface member that can hold the left end side of the seat surface portion of the cloth body, a left armrest body, a left link body,
The lower end of the left front pillar is pivotally attached to the lower end of the left long leg, and the other end of the left seat member is pivotally attached near the other end. It is pivotally attached to one end of the link body, the front is pivotally attached to the upper end of the left front pillar, and the other end of the left link body is pivotally attached to the approximate center of the left long leg,
The right armrest structure consists of a right front pillar body with a nested structure that allows the lower part to expand and contract, a right seat surface member that can hold the right end of the seat surface portion of the cloth body, a right armrest body, a right link body,
The lower end of the right front column is pivotally attached to the lower end of the right long leg, and the other end of the right seat member is pivotably attached to the other end. It is pivotally attached to one end of the link body, the front is pivotally attached to the upper end of the right front pillar body, and the other end of the right link body is pivotally attached to the approximate center of the right long leg body. Folding chair characterized by. The front leg structure has one end pivotably attached to the upper side of the right front pillar, the other end pivotably attached to the lower end of the left long leg, and one end above the left front pillar. It has a hole structure that is attached to the lower end of the right long leg so that the other end is pivotably attached to the lower end of the right long leg. The folding chair according to claim 4 , wherein the folding chair can be rotated by a shaft passing through the hole structure and communicating with each other. Left front pillar, left seat member, left armrest, left link body, right front pillar, right seat member, right armrest with lower stretchable structure A folding chair consisting of a body, a right link body, and other structures,
The lower end of the left front column is pivotably attached to the other structure, the front of the left seat member is pivotally attached to the other end, and the left armrest is rearwardly connected to one end of the left link body. It is pivotally attached, the front is pivotably attached to the upper end of the left front pillar, and the other end of the left link is pivotally attached to the other structure,
The lower end of the right front column is pivotably attached to other structures, the front of the right seat member is pivotally attached to the other end, and the right armrest is rearwardly connected to one end of the right link. A folding chair characterized in that it is pivotably attached, the front is pivotably attached to the upper end of the right front pillar body, and the other end of the right link body is pivotally attached to another structure.

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