JP2020018681A - Chair - Google Patents

Abstract

To provide a comfortable chair.SOLUTION: A chair 1 according to the present invention comprises a leg part 2, and a seat part 3 supported by the leg part 2. The seat part 3 comprises an outer shell 34, an inner shell 33 arranged on the outer shell 34, and a cushion material 31 arranged on the inner shell 33. The outer shell 34 comprises a concave part 341. A space S that allows the inner shell 33 to bend toward a bottom wall 343 of the outer shell 34 when a load is applied to the seat part 3, exists between the inner shell 33 and the bottom wall 343 constituting the concave part 341 of the outer shell 34.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a chair.

  Patent Literature 1 discloses a chair including a seat and a leg supporting the seat. The seat of the chair has a holding member for holding the seat body. The holding member includes a first holding member having a recess for accommodating the seat body, and a second holding member having a recess for accommodating the first holding member. A rib is provided on the bottom surface of the first holding member. The top of the rib is in contact with the bottom wall constituting the recess of the second holding member. According to such a configuration, the chair disclosed in Patent Literature 1 can secure rigidity against a load applied to a seat when a user sits.

JP 2010-154916 A

  In the chair of Patent Literature 1, since the top of the rib is in contact with the bottom wall forming the concave portion of the second holding member, the first holding member does not bend when the user sits down, and the seating becomes firm.

  An object of the present invention is to provide a comfortable chair.

The present invention is a chair including a leg and a seat supported by the leg,
The seat includes an outer shell, an inner shell disposed on the outer shell, and a cushion material disposed on the inner shell,
The outer shell has a concave portion,
Between the inner shell and the bottom wall forming the recess of the outer shell, when a load is applied to the seat portion, the inner shell is allowed to bend toward the bottom wall of the outer shell. There is a space to do,
It is characterized by:

In the chair according to the present invention,
The inner shell includes a concave portion that accommodates the cushion material,
A bottom wall constituting a recess of the inner shell is housed in a recess of the outer shell,
The space exists between a bottom wall of the inner shell and a bottom wall of the outer shell,
Is preferred.

In the chair of the present invention,
In the vicinity of the periphery of the upper surface of the bottom wall of the outer shell, a protruding portion extending upward and abutting on the lower surface of the bottom wall of the inner shell is formed, or near the periphery of the lower surface of the bottom wall of the inner shell, A protruding portion that extends downward and contacts the upper surface of the bottom wall of the outer shell is formed,
In a state in which no load is applied to the seat, the lower surface of the bottom wall of the inner shell does not contact the upper surface of the bottom wall of the outer shell, so that the space is formed inside the protruding portion.
Is preferred.

  In the chair of the present invention, when the user sits on the seat portion and a load is applied, the inner shell bends toward the outer shell, so that the sitting comfort is good.

It is a perspective view of a chair. FIG. 2 is a sectional view taken along line II-II of FIG. 1. It is the perspective view of the inner shell seen from the lower surface side.

  The present invention will be described with reference to the drawings. The embodiment described below shows a preferred specific example of the present invention. The present invention is not limited to the following embodiments, and can be appropriately changed without departing from the gist of the present invention.

  The chair 1 of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the chair 1. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a perspective view of the inner shell 33 viewed from the lower surface side. In the following, for convenience of explanation, coordinate axes (vertical direction, left-right direction, front-back direction) are set as shown in FIG. These coordinate axes are defined based on the occupant. Note that the “lower surface” is a surface opposite to the “upper surface”, that is, a “back surface”.

  As shown in FIG. 1, the chair 1 includes a leg 2, a seat 3, and a backrest 4. The leg 2 includes a front leg 21 and a rear leg 22. The front leg 21 and the rear leg 22 are connected to a side surface of the seat 3, specifically, a side portion of a support member 35 described later.

  The seat 3 is substantially rectangular in plan view. As shown in FIG. 2, the seat 3 includes a cushion material 31, a cover member 32, an inner shell 33, an outer shell 34, and a support member 35. The cushion material 31 is made of, for example, polyurethane. The cover member 32 covers the upper surfaces of the cushion material 31 and the inner shell 33. The support member 35 is made of a pipe. The support member 35 has a rectangular closed shape and is locked on the lower surface of the outer shell 34.

  As shown in FIG. 2, the inner shell 33 is disposed on the outer shell 34. The inner shell 33 has a recess 331 that is recessed downward. The cushion material 31 is accommodated in the recess 331. As shown in FIGS. 2 and 3, a plurality of pins 333 extending downward are formed near the periphery of the lower surface of the bottom wall 332 constituting the recess 331. A large number of through holes 334 are formed in a region of the bottom wall 332 inside the pins 333. Thereby, the bottom wall 332 is easily bent downward when a load is applied.

  As shown in FIG. 2, the outer shell 34 includes a concave portion 341 recessed downward, and a locking portion 342. The inner shell 33 is housed in the recess 341. The locking portion 342 is a groove provided around the bottom wall 343 on the lower surface side of the bottom wall 343 constituting the recess 341. The support member 35 is locked to the locking portion 342. A protruding portion 344 that protrudes upward is formed near the periphery of the upper surface of the bottom wall 343. The protrusion 344 is formed at a position corresponding to the pin 333. The protrusion 344 has a through hole through which the pin 333 passes. A large number of through holes 345 are formed in a region of the bottom wall 343 inside the protruding portion 344.

  The pin 333 passes through a through hole provided in the protrusion 344 and is locked on the lower surface of the bottom wall 343. Thus, the inner shell 33 is attached to the outer shell 34. The lower surface of the bottom wall 332 of the inner shell 33 abuts on the upper surface of the protrusion 344. As a result, the lower surface of the bottom wall 332 of the inner shell 33 and the upper surface of the bottom wall 343 of the outer shell 34 do not come into contact with each other in the entire region inside the protruding portion 344, and a space S is formed therebetween. You. That is, the space S is formed between the lower surface of the bottom wall 332 and the upper surface of the bottom wall 343 by the height of the protruding portion 344.

  In the chair 1 of the present invention, unlike the chair of the related art, there is no rib on the lower surface of the bottom wall 332 of the inner shell 33 in contact with the upper surface of the bottom wall 343 of the outer shell 34. The lower surface of the bottom wall 332 of the inner shell 33 and the upper surface of the bottom wall 343 of the outer shell 34 are not in contact with each other, and the space S extends between them. Thereby, when the user sits on the seat portion 3 and a load is applied downward, the bottom wall 332 of the inner shell 33 can bend into the space S toward the bottom wall 343 of the outer shell 34. . Therefore, the sitting comfort is improved.

<Modification>
(1) Instead of extending upward from the upper surface of the bottom wall 343 of the outer shell 34, the projecting portion 344 extends downward from the lower surface of the bottom wall 332 of the inner shell 33 and contacts the upper surface of the bottom wall 343 of the outer shell 34. It may be configured as follows.

(2) The chair 1 may be a folding chair.

1 Chair 2 Leg 3 Seat 31 Cushion 33 Inner shell 331 Concave 332 Bottom wall 34 Outer shell 341 Concave 343 Bottom wall 344 Projection

Claims (3)

A chair comprising a leg and a seat supported by the leg,
The seat includes an outer shell, an inner shell disposed on the outer shell, and a cushion material disposed on the inner shell,
The outer shell has a concave portion,
Between the inner shell and the bottom wall forming the recess of the outer shell, when a load is applied to the seat portion, the inner shell is allowed to bend toward the bottom wall of the outer shell. There is a space to do,
A chair characterized by that: The inner shell includes a concave portion that accommodates the cushion material,
A bottom wall constituting a recess of the inner shell is accommodated in a recess of the outer shell,
The space exists between the bottom wall of the inner shell and the bottom wall of the outer shell,
The chair according to claim 1. In the vicinity of the periphery of the upper surface of the bottom wall of the outer shell, a protruding portion extending upward and abutting on the lower surface of the bottom wall of the inner shell is formed, or near the periphery of the lower surface of the bottom wall of the inner shell, A protruding portion that extends downward and contacts the upper surface of the bottom wall of the outer shell is formed,
In a state in which no load is applied to the seat, the lower surface of the bottom wall of the inner shell does not contact the upper surface of the bottom wall of the outer shell, so that the space is formed inside the protruding portion.
The chair according to claim 2.

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