JP3188766U - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sitting chair in which a waist rest portion can be closely applied to a waist according to a seated person's body shape, whereby a sitting chair which does not get tired even when sitting for a long time is provided. SOLUTION: A seat portion 3 on which a person's buttocks can be placed, a waist rest portion 4a arranged above the rear portion of the seat portion 3 and capable of leaning a person's waist, and a waist rest portion 4a thereof. A U-shaped frame body 4 having an extending portion 4b extending from both left and right sides to an intermediate position in the front-rear direction of the seat portion 3 is provided, and the extending portion 4b of the U-shaped frame body 4 is placed at an intermediate position in the front-rear direction of the seat portion 3. The height position and the front-rear direction position of the hip rest portion 4a can be adjusted above the rear portion of the seat portion 3 by pivotally attaching to the U-shaped frame body 4 and swinging the U-shaped frame body 4. [Selection diagram] Fig. 1

Description

  The present invention relates to a seat chair suitable for use in a seat or the like.

  A conventional seat chair includes a seat portion on which a person's buttocks can be placed and a backrest portion pivotally attached to the rear end portion of the seat portion so that the inclination angle can be adjusted (for example, , See Patent Document 1).

Utility Model Registration No. 2560278

  However, the seat chair according to Patent Document 1 has a problem in that, when seated, the waist is slightly separated from the backrest portion, so that the user quickly gets tired. Further, even if a waistline portion is provided to bend the waist, there is a problem that it is difficult to fit the waistline portion to the waist according to the body shape of the seated person.

  The present invention has been made in view of the above-mentioned problems, and the seat chair can be placed on the lower back according to the body shape of the seated person so that it does not get tired even when sitting for a long time. Is intended to provide.

In order to achieve the above object, a seat chair according to the present invention comprises:
A seat on which a person's buttocks can be placed, a waist that is placed above the back of the seat and can bend the person's waist, and extends forward from the left and right sides of the waist A U-shaped frame having a portion,
The extending portion of the U-shaped frame is pivotally attached to an intermediate position in the front-rear direction of the seat part or a front side position relative to the intermediate position in the front-rear direction, and the U-shaped frame is swung to thereby The height position and the front-rear direction position of the lower back part can be adjusted above the rear part of the body (first device).
In the present invention, the “seat chair” is a generally defined seat chair, that is, a chair that does not have legs and sits on a backrest or a backrest, and this generally defined chair. It includes the concept of both a chair with a leg and a base on the child.

  In the present invention, it is preferable that the U-shaped frame body is provided with a handle portion that is further bulged forward from the extending portion and can be gripped by a human hand (second device).

  According to the seat chair of the present invention, the extending portion of the U-shaped frame is pivotally attached to the front-rear direction intermediate position of the seat or the front-side position relative to the front-rear intermediate position, and the U-shaped frame is swung. By moving, the height position and the front-rear direction position of the waistline part are adjusted above the rear part of the seat part, so that the height position and the front-rear direction position of the waistline part are adjusted according to the position of the waist of the seated person Can be adjusted. Therefore, it is possible to fit the waistline to the waist according to the body shape of the seated person, and this has the effect of being less fatigued even if sitting for a long time.

  Further, by providing the U-shaped frame body with a handle portion that is further bulged forward from the extending portion and can be grasped by a human hand, the handle portion can be attached when the seated person stands up. Because you can grab and stand up using the strength of your arms, you can reduce the burden on your hips and knees when you stand up.

1 is an overall perspective view of a seat chair according to an embodiment of the present invention. It is a side view of a sitting chair. (A) is a top view of the same chair, (b) is a bottom view of the same chair. (A) is a use example explanatory drawing of the same seat, (b) is a riser explanatory drawing of a seated person. It is a side view of the seat chair which concerns on a modification.

  Next, specific embodiments of a seat chair according to the present invention will be described with reference to the drawings.

<General description of the chair>
A seat chair 1 shown in FIG. 1 includes a seat portion 3 installed on a pair of leg members 2, and a U-shaped frame body 4 having a substantially U shape in plan view is provided above the seat portion 3. It is arranged and configured.

  As shown in FIG. 3 (a), the seat portion 3 is large enough to allow a person's buttocks to be placed, and is formed in a substantially rectangular shape in the front half and a substantially semicircular shape in the rear half. Support members 5 are erected on the left and right sides of the seat portion 3 at the middle position in the front-rear direction.

<Description of U-shaped frame>
The U-shaped frame body 4 has a waistline portion 4a that is disposed above the rear portion of the seat portion 3 and can bend a person's waist. On both the left and right sides of the waistline portion 4a, extending portions 4b extending to the middle position in the front-rear direction of the seat portion 3 are integrally provided. The extending portion 4b is integrally provided with a handle portion 4c that is further bulged forward and can be grasped by a human hand.
In the U-shaped frame 4, the distance between the left and right extending portions 4 b is set to be equal to or greater than the width of the human torso, and the left and right extension of the U-shaped frame 4 when sitting. The torso of the seated person is inserted between the protruding parts 4b. The extending portion 4b of the U-shaped frame body 4 also serves as an elbow rest, and can be seated with the elbow placed on the extending portion 4b so as to reduce fatigue during sitting.

<Description of tilt angle adjustment mechanism>
As shown in FIG. 2, the extending portion 4 b of the U-shaped frame body 4 is rotatably attached to the column member 5 of the seat portion 3 via an inclination angle adjusting mechanism 6.
The tilt angle adjusting mechanism 6 allows the tilt angle of the U-shaped frame 4 to be adjusted, and the U-shaped frame 4 is in a horizontal state as represented by a two-dot chain line in FIG. Oscillation range θ between a horizontal position and an inclined position that forms a predetermined angle (for example, about 25 ° to 30 °) with respect to this horizontal position and is inclined upward as shown by a solid line in FIG. It is configured to be adjustable within.
Specifically, the tilt angle adjusting mechanism 6 is a ratchet mechanism known per se, and gradually (for example, six steps) and automatically by raising the U-shaped frame 4 upward from the horizontal position. The lock is released at a predetermined tilt angle, and the U-shaped frame body 4 is rocked forward beyond the tilt position to be returned to the horizontal position. Therefore, the U-shaped frame 4 can be in various inclined states within the swing range θ in addition to the inclined position shown by the solid line in FIG. To achieve an optimum inclination state.

  Although detailed explanation by illustration is omitted, both the seat portion 3 and the U-shaped frame body 4 are configured by mounting a cushion material on a rigid frame member and covering the cushion material with a cover member.

In addition, as the leg member 2, for example, a metal pipe material, bent wood, or the like formed by bending in a lateral U shape, a triangular shape, a columnar shape, or the like can be applied. . In the present embodiment, the leg member 2 is formed by bending a metal pipe material in a lateral U shape.
As shown in FIG. 3B, in the pair of leg members 2, the front mounting interval W ₂ is wider than the rear mounting interval W ₁ , and an inverted C shape is seen from the bottom. Is arranged. Thereby, when using the seat 1 as a regular seat, the lower knee part of the bent leg can be easily put between the seat 3 and the floor from the front side of the seat 3.

<Explanation of usage examples>
In the seat 1 configured as described above, as shown in FIG. 4A, the buttocks of the user M are placed on the seat 3, and the legs are, for example, lightly assembled with crossed legs. The feet are placed on the floor in front of the seat part 3 and the waist is bent on the waist part 4a of the U-shaped frame 4, and the elbow is placed on the extension part 4b which also serves as an elbow rest. use. In addition, there is also a mode of use in which the leg is bent and the under knee portion is placed between the seat portion 3 and the floor to sit upright.

<Description of effects>
According to the seat 1 of the present embodiment, as shown in FIG. 2, the U-shaped frame 4 is positioned between a horizontal position represented by a two-dot chain line in the drawing and an inclined position represented by a solid line in the drawing. The height position and the front-rear direction position of the waistline part 4a are adjusted above the rear part of the seat part 3 by swinging at the position of the seat part 3, so that the height position of the waistline part 4a is adjusted to the position of the waist of the seated person And the front-rear direction position can be adjusted. Accordingly, as shown in FIG. 4 (a), the waistline portion 4a can be applied to the waist in accordance with the body shape of the seated person (user M), and this makes it less likely to get tired even if sitting for a long time. There is.
Further, the U-shaped frame body 4 is provided with a handle portion 4c that is further bulged forward from the extending portion 4b and can be grasped by a human hand. When standing up as shown in (b), it is possible to stand up using the arm force by grasping the handle portion 4c, and to reduce the burden on the waist and knees when standing up.

  As mentioned above, although the seat chair of this invention was demonstrated based on one embodiment, this invention is not limited to the structure described in the said embodiment, The structure is suitably changed in the range which does not deviate from the meaning. Is something that can be done.

  For example, in the above embodiment, as shown in FIG. 2, the example in which the extending portion 4 b of the U-shaped frame body 4 is pivotally attached to the intermediate position in the front-rear direction of the seat portion 3 is shown. Instead, as shown in FIG. 5, there may be an embodiment in which the extending portion 4 b of the U-shaped frame body 4 is pivotally attached to the front side position relative to the middle position in the front-rear direction of the seat portion 3. That is, the column members 5 are erected on the left and right sides at a predetermined position between the front end of the seat portion 3 and the intermediate position in the front-rear direction, more specifically on the front side of the seat portion 3 in the front-rear direction intermediate position. The extending portion 4b of the U-shaped frame 4 is extended until it reaches the column member 5, and the extending portion 4b of the U-shaped frame 4 can be rotated to the column member 5 via the tilt angle adjusting mechanism 6. You may make it attach to.

  The seat chair of the present invention has a characteristic that it can fit the waist of the waist exactly according to the body shape of the seated person, and it has the characteristic that it will not get tired even if it sits for a long time, so in seats etc. It can be suitably used for the purpose of maintaining the posture when sitting for a long time.

DESCRIPTION OF SYMBOLS 1 Seat chair 2 Leg member 3 Seat part 4 U-shaped frame 4a Lumbar part 4b Extension part 4c Handle part 6 Inclination angle adjustment mechanism

Claims (2)

A seat on which a person's buttocks can be placed, a waist that is placed above the back of the seat and can bend the person's waist, and extends forward from the left and right sides of the waist A U-shaped frame having a portion,
The extending portion of the U-shaped frame is pivotally attached to an intermediate position in the front-rear direction of the seat part or a front side position relative to the intermediate position in the front-rear direction, and the U-shaped frame is swung to thereby A seat chair characterized in that the height position and the front-rear direction position of the waistline part can be adjusted above the rear part of the body. The seat chair according to claim 1, wherein the U-shaped frame body is provided with a handle portion that is further bulged forward from the extending portion and can be gripped by a human hand.

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