JP2006346400A - Foldable chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable chair which can be easily stored since front and rear surfaces can be formed flat in a folded state, be easily assembled by anyone since the chair is spontaneously formed just by slightly inclining a seat plate forward, be conveniently carried by handle holes, and further, is reliable in strength though it has a simple structure. <P>SOLUTION: In the foldable chair, inside a roughly quadrangular chair body frame, a support leg supported at the upper ends by hinges or the like so as to be freely opened/closed, bored with a center support hole provided with a locking groove for locking the locking part of the seat plate and bored with the handle hole on the upper part is provided. On the upper front surface of the chair body frame, the seat plate is provided, which is supported on both sides at slightly lower center part by hinges or the like so as to be freely opened, the handle hole is bored at the upper part and the locking part is formed at the lower part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a folding chair that can be viewed as a single plate when viewed from the side in a folded state, and can be easily opened and closed by its own weight.

  As a conventional technique, each part forming the chair is composed of four plates, and the four plates are connected to each other by a hinge-type mechanism or the like, and the folding chair is integrated with each other. There is. (See Patent Document 1)

  Further, as another conventional technique, a seat plate is attached to a part of a support column with a hinge so as to be rotatable with respect to the support column, and a rotation shaft is provided at a position below the seat plate on the support column. There is a folding chair that is configured to be mounted rotatably. (See Patent Document 2)

Further, as another conventional technique, in a portable foldable chair provided with a sheet fabric on a foldable chair frame, a pair of foldable armrests having a cup rack on the chair frame, a detachable legrest and a headrest Is provided. This makes it possible to support not only the buttocks and back as well as the entire body, including both arms, legs, and head, in a balanced manner when used when resting in the garden or outdoors, thus improving comfort. There is a portable folding chair. (See Patent Document 3)
Japanese Utility Model Publication No. 63-120951 Utility Model Registration No. 3089610 JP 2000-135144 A

  In the former, it is inconvenient to carry in the stage before assembling, and since each member is formed in a concavo-convex shape, it is difficult to store, and there is a possibility that it is caught in and out of surroundings.

  The middle man also has the same problems as described above, and has many members, which increases the cost, and has a problem in strength.

  In the latter, it is composed of a sheet fabric and a frame and has been developed for portable use.

The present invention has been made in view of the above problems, and the object thereof is easy to store because the front and rear surfaces can be formed in a flat shape in a folded state.
In addition, the chair is voluntarily formed by simply tilting the seat plate slightly forward, and anyone can easily assemble it, and the handle hole is convenient for carrying.
Furthermore, the present invention proposes a folding chair that is simple in structure but reliable in strength.

In order to achieve the above object, the present invention provides a foldable chair having a seat plate near a central portion of a substantially rectangular chair body frame, the upper end of which is supported by a hinge or the like so as to be freely opened and closed. A support hole formed with a locking groove for locking the stop portion is provided, and a support leg formed with a handle hole is provided at the upper portion, and the upper front surface of the chair body frame is slightly below the center portion. Both sides are supported by a hinge or the like, and a handle hole is formed in an upper part formed to be openable and closable, and a seat plate formed with a locking part in the lower part is provided.
Further, in the seat plate, a portion supported by a hinge or the like is used as a fulcrum, and the weight of the upper portion is made heavier than the weight of the lower portion.
And the handle hole of a support leg and the handle hole of a seat board are penetrated.
The thickness of the seat plate and the thickness of the upper part of the chair body frame are the same.
Furthermore, the sum of the thickness of the plate and the thickness of the support leg and the thickness of the lower portion of the chair body frame are the same.

The present invention has the following effects.
1) A structure that can be sufficiently used as a chair by simply locking the locking portion of the seat plate to the support hole (locking groove) of the support leg, while having a simple configuration of the chair body frame, the support leg, and the seat plate. Become. .
2) In the seat plate, the part supported by a hinge or the like is used as a fulcrum and the weight of the upper part is made heavier than the weight of the lower part. Can assemble the chair automatically.
3) By passing through the handle hole of the support leg and the handle hole of the seat plate, it can be easily carried by grasping with the hand.
4) The sum of the thickness of the seat plate and the upper portion of the chair body frame is the same as the thickness of the lower portion of the chair body frame, the sum of the thickness of the seat plate and the thickness of the support legs, and the chair body frame. Since the front and rear surfaces can be formed in a flat shape by making the thickness of the lower part of the same the same, it is easy to store and not easily scratched.

1 is a folding chair.
Reference numeral 2 denotes a rectangular chair body frame made of wood or the like, and has a thickness T of the upper portion 2a that is approximately half of a thickness T1 of the lower portion 2b.
Reference numeral 3 denotes a support leg which is formed at the top of the chair body frame 2 with its upper end supported by a hinge CB and is openable and closable. A support hole 3a provided with a locking groove 3a1 for stopping is drilled, and a handle hole 3b is drilled at the upper center.
4 is a seat plate which is supported on the front surface of the upper portion 2a of the chair body frame 2 and is openable to the chair body frame 2 with hinges CB1 on both sides slightly below the center portion. A handle hole 4a is drilled, both sides of the central part are formed in a stepped shape 4b, and a mushroom-like locking portion 4c is formed in the lower part.

An example of use of the folding chair 1 will be described below.
First, a hand (not shown) is put into the handle hole 3b of the support leg 3 to support the folding chair 1, and the other hand (not shown) just tilts the upper end of the seat plate 4 forward slightly by its own weight. At the same time as it falls forward, the locking portion 4c enters the support hole 3a and automatically assembles the folding chair 1, and the locking portion 4c is locked in the locking groove 3a1 to complete the assembly.

  The folding chair 1 is structured to receive the reaction force H by the locking portion 4c (locking groove 3a1) by sitting on the seat plate 4 (weight TG), and is stable in strength.

The folding chair in the above embodiment is preferably made of wood, but may be made of other materials such as plastic or aluminum.
Moreover, what is necessary is just to determine the magnitude | size of the whole folding chair as needed.
Furthermore, each part may have another shape as long as it has a similar function.

  The front view of the folding chair which shows embodiment of this invention.   The rear view of the folding chair which shows embodiment of this invention.   The side view of the folding chair which shows embodiment of this invention.   The top view of the folding chair which shows embodiment of this invention.   The side view at the time of folding chair assembly start which shows embodiment of this invention.   The side view of the folding chair assembly intermediate | middle time point which shows embodiment of this invention.   The side view at the time of completion | finish of folding chair assembly which shows embodiment of this invention.   The top view at the time of the end of folding chair assembly which shows embodiment of this invention.

Explanation of symbols

1 --- folding chair 2 --- chair body frame 2a--upper 2b--lower 3 --- support leg 3a--support hole 3a1-locking groove 3b--handle hole 4 --- seat plate 4b -Stepped 4c-Locking part T-Thickness CB-Hinge TG-Weight H-Reaction force

Claims (5)

  In a foldable chair, a locking groove that locks the locking portion of the seat plate is provided in the vicinity of the center portion of the substantially rectangular chair body frame that is supported by a hinge or the like and that can be opened and closed. In addition to drilling a support hole, a support leg is formed by drilling a handle hole in the upper part, and the chair body frame is supported by hinges etc. on both sides slightly below the center part, and can be opened and closed. A folding chair characterized in that a handle hole is formed in the upper part and a seat plate is provided with a locking part formed in the lower part.   2. The folding chair according to claim 1, wherein a portion of the seat plate supported by a hinge or the like is used as a fulcrum, and the weight of the upper portion is made heavier than the weight of the lower portion.   The folding chair according to claim 1 or 2, characterized in that the handle hole of the support leg and the handle hole of the seat plate are penetrated.   4. The folding chair according to claim 1, wherein the total thickness of the seat plate and the upper part of the chair body frame is the same as the lower part of the chair body frame.   The folding chair according to claim 1, 2, 3 or 4, wherein the total thickness of the seat plate and the support legs is the same as the thickness of the lower portion of the chair body frame.

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