JP2016097047A - Backrest and chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a backrest which can exert comfort and easy feeling to a user by means of an appropriate bending.SOLUTION: A backrest 10 is attached to a chair body 20 including a seat part 30 supported by a support part 40 and includes: long plate-shaped members 11 juxtaposed plurally at intervals and including an attachment part 111 to a chair body 20 on a base end side; and a connection member 12 connecting tip sides of the plural plate-shaped members 11. Each of the plate-shaped members 11 is a flexible member formed by cutting a bamboo in a longitudinal direction and is arranged such that front and rear faces are adjacent alternately in a juxtaposing direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a backrest and a chair including the backrest.

  As a conventional chair, Patent Document 1 discloses a configuration having a backrest in which a plurality of elongated bamboo materials are arranged in parallel and the upper ends are connected by a rubber belt. In this chair, when the weight is applied to the backrest, the backrest is greatly elastically deformed by the bending of the bamboo.

JP 2002-95545 A

  However, simply placing a plurality of bamboo materials in parallel as in the above-described conventional chair may cause excessive deformation of the backrest, which impairs comfort and stability. Further, when the bamboo material is made large in this way, there is a possibility that plastic deformation occurs in the backrest.

  Therefore, the present invention aims to provide a backrest that can give the user comfort and a sense of security by appropriate adjustment, and further aims to provide a chair provided with this backrest.

  The object of the present invention is a backrest that is attached to a chair body in which a seat portion is supported by a support portion, and a plurality of backrests that are arranged in parallel with a space between each other and that have an attachment portion to the chair body on the base end side. Each of the plate-like members is a flexible member formed by cutting bamboo in the longitudinal direction. This is achieved by a backrest that is arranged so that the front and back surfaces are adjacent to each other in the parallel direction.

  The backrest is preferably provided with a reinforcing member on the back surface on the base end side of the plate-like member.

  Further, the object of the present invention is achieved by a chair attached to a chair body in which the backrest is supported by a seat portion.

  In this chair, it is preferable that the seat portion includes a plurality of elongated members arranged at intervals from each other, the plate-like members are inserted between the elongated members, and the backrest is the chair. It can be configured to be attached to the body.

  ADVANTAGE OF THE INVENTION According to this invention, the backrest which can give a user a comfort and a feeling of comfort by moderate adjustment can be provided, and also a chair provided with this backrest can be provided.

It is a perspective view of the chair concerning one embodiment of the present invention. It is a front view of the chair shown in FIG. It is AA sectional drawing of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 are a perspective view and a front view, respectively, of a chair according to an embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line AA in FIG. As shown in FIGS. 1 to 3, the chair 1 of the present embodiment is configured with a backrest 10 attached to a chair body 20.

  The backrest 10 includes a plurality of long plate-like members 11 arranged in parallel with a space between each other, and a connecting member 12 that connects the distal ends of the plurality of plate-like members 11. The plate-like member 11 is a flexible member formed into a thin plate shape by cutting bamboo along the longitudinal direction, and is attached to the chair body 20 on the base end side opposite to the connecting member 12. 111.

  The plate-like member 11 is formed by cutting bamboo in the longitudinal direction as described above, and has a fiber density distribution in the thickness direction. That is, the surface side of the plate-like member 11 is the bamboo skin side, and the fiber density is high, while the back side of the plate-like member 11 is the bamboo side, and the fiber density is low. For this reason, the bending that occurs when a predetermined load is applied to the plate-like member 11 is larger when the front side is convex than when the rear side is convex.

  The backrest 10 of the present embodiment utilizes such a difference in fiber density between the front and back surfaces of bamboo, and is arranged so that the front surface 11a and the back surface 11b of the plate-like member 11 are alternately arranged as shown in FIG. By doing so, the front and back surfaces of each plate-like member 11 are configured to be adjacent in the parallel direction. Although the plate-like member 11 is a single layer in this embodiment, it may be a laminate of a plurality of bamboo materials. In this case, the back surface of another bamboo material is adhered to the surface of one bamboo material. It is preferable to stack them sequentially.

  The connecting member 12 is composed of a pair of plate-like bodies that sandwich the front and back surfaces of the front end portion of the plate-like member 11. Although the material of the connection member 12 is not specifically limited, For example, the same bamboo material as the plate-shaped member 11 can be used.

  The chair body 20 includes a seat portion 30 on which a user sits and a support portion 40 that supports the seat portion 30. The seat portion 30 is configured in the same manner as the backrest 10, and includes a plurality of elongated members 31 that are arranged in parallel at intervals, and a connecting member 32 that connects the distal ends of the plurality of elongated members 31. . The elongate member 31 can be formed from bamboo like the plate-like member 11, and is arranged so that the front and back surfaces are adjacent to each other in the parallel direction.

  The support portion 40 includes a pair of legs 41 and 41 disposed on the left and right sides of the seat portion 30, and a front horizontal member 42 and a rear portion that connect the front and rear upper portions of the pair of legs 41 and 41, respectively. The side horizontal member 43 is provided. Moreover, the support part 40 is provided with the backrest mounting part 44 and the seat part mounting part 45 by which the base end side of the backrest 10 and the seat part 30 is detachably mounted.

  The backrest mounting portion 44 is fixed to the front portion between the pair of legs 41 and 41 so as to extend horizontally, and has a plurality of mounting holes 441 for individually accommodating the mounting portions 111 of the plate-like members 11. ing. The seat mounting portion 45 is fixed so as to extend horizontally behind the backrest mounting portion 44 between the pair of legs 41, 41, and individually accommodates the base end portions 311 of the respective elongated members 31. A plurality of mounting holes 311 are provided. The seat portion 30 has a length that allows the user to sit with its legs extended, and the lower surface side is supported by being in contact with the front lateral member 42 while being mounted on the seat mounting portion 45. . The plate-like members 11 of the backrest 10 are inserted between the elongated members 31 connected to each other in the seat portion 30, and the backrest 10 and the seat portion 30 intersect with each other in a side view. The plate-like member 11 and the elongated member 31 are formed such that the width from the crossing portion is slightly smaller on the distal end side than on the proximal end side.

  In the chair 1 having the above configuration, when the user leans on the backrest 10 while sitting on the seat portion 30, the backrest 10 bends in the direction of the arrow as shown in FIG. Since the backrest 10 is arranged so that the front and back surfaces of the plate-like member 11 made of bamboo are adjacent to each other in the parallel direction, as shown in FIG. 2, the surface 11a side with a relatively high fiber density faces the front. While the plate-like member 11 tends to be greatly deformed by the load, the plate-like member 11 with the back surface 11b side having a relatively low fiber density facing the front has a small deformation, so that the deformation of the adjacent plate-like member 11 is reduced. Suppress. As a result, excessive bending of the backrest 10 as a whole can be prevented, and the user can obtain a sense of security as well as a comfortable feeling of use. Moreover, the deformation | transformation of the backrest 10 can be suppressed, the plastic deformation of the plate-shaped member 11 can be prevented, and durability can be improved.

  Further, the seat portion 30 is configured in the same manner as the backrest 10 and the backrest 10 and the seat portion 30 are crossed in a side view, so that the user's whole body can be relaxed depending on the appropriateness of the backrest 10 and the seat portion 30. Can give an effect. When the chair 1 is not used, it can be stored compactly by removing the backrest 10 and the seat portion 30 from the support portion 40.

  As shown in FIG. 3, the plate-like member 11 is provided with a reinforcing member 13 on the back side on the base end side. The reinforcing member 13 extends from an upper position to a base end with respect to a position where the backrest 10 and the seat portion 30 intersect, and by restricting the bending of the plate-like member 11 at this portion, the bending of the backrest 10 is desired. It is possible to improve the user's comfort by generating from the height position. When bamboo material is used as the reinforcing member 13, it is preferably arranged so that the surface side with high fiber density is exposed.

DESCRIPTION OF SYMBOLS 1 Chair 10 Backrest 11 Plate-shaped member 11a Front surface 11b Back surface 111 Attachment part 12 Connection member 20 Chair main body 30 Seat part 31 Elongate member 40 Support part

Claims (4)

A backrest that is attached to a chair body with a seat supported by the support,
A plurality of plate-like members that are arranged in parallel with a space between each other, and have an attachment portion to the chair body on the base end side;
A connecting member that connects the tip end sides of the plurality of plate-like members,
Each said plate-like member is a flexible member formed by cutting bamboo in the longitudinal direction, and a backrest that is disposed so that the front and back surfaces are adjacent to each other in the parallel direction.   The backrest according to claim 1, wherein a reinforcing member is provided on the back surface of the base end side of the plate-like member.   A chair, wherein the backrest according to claim 1 or 2 is attached to a chair body in which a seat portion is supported by a support portion. The seat portion includes a plurality of elongated members arranged at intervals from each other,
The chair according to claim 3, wherein the plate-like members are inserted between the elongated members, and the backrest is attached to the chair body.

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