JP7221188B2 - Chair - Google Patents

Description

The present invention relates to a chair (including a legless chair).

Armrests provided on conventional chairs and legless chairs are used to rest the elbows or rest the forearms, which are fixed in a substantially horizontal state or flip-up type armrests in a substantially horizontal state. It was common to have one that made it possible to rotate up and down.
Such chairs with armrests or legless chairs are generally used for sitting for rest, and the armrests were used only for resting the elbows or resting the forearms at most. Met.

However, in recent years, with the spread of smartphones and tablets, there are more and more opportunities to do entertainment or work using only the wrists and fingertips for a long time while sitting on a chair or legless chair. It is done to maintain the same posture and posture for a long time. And taking such a posture for work etc. is a posture that raises the arms and lowers the head, which is not a sitting posture for resting, so-called smartphone posture. An increasing number of people are suffering from the problem of a straight neck (see Figure 8, which shows the conventional posture that places a load on the neck), which causes pain due to the load placed on the neck, shoulders, and back due to posture and posture. There is a problem that a large load is applied.

In order to solve the problems caused by such changes in the use of new chairs and legless chairs, it is no longer possible to deal with them only with the armrests that were provided in conventional chairs and legless chairs. ing.

As a remedy for this, it is necessary to maintain a comfortable posture of the upper body and head, and gently hold the upper arm and forearm, which have been lifted in the air for a long time, from below so that the patient can concentrate on the work of the wrist and fingers. be.

JP-A-9-267678 JP 2013-215224 A

In the chair and the legless chair described in Patent Documents 1 and 2 above, since the armrests have a flip-up mechanism and the foldable armrests provide the armrests when in use, the upper arms and forearms of the seated person can be positioned at any angle. Therefore, there is a problem that it is impossible to obtain a proper posture for long hours of work.
Therefore, it is intended to provide left and right arm support mechanisms not only to put the elbows on or rest the elbows on, but also to reduce the fatigue of the arms, etc. during the posture of the seated person, smartphones, work, etc.

The present invention is based on the following configurations.
(1) A pedestal that rotates the upper part of the seat of a chair or a legless chair, a seat part that bends the left and right sides obliquely upward to stabilize and hold the waist, and a seat part that bends the rear of the seat surface upward and left and right shoulders. The backrest part and the headrest part protruding to the left and right are connected by hinges that move and hold them back and forth, respectively. A holding part is provided.
(2) The seat portion and the backrest portion, and the backrest portion and the headrest are connected by hinges, respectively, and can be fixed at an appropriate angle by rotating each in the vertical direction.
(3) The upper arm and forearm of the backrest and the arm holder are also connected by hinges. The angle is fixed, and the forearm is pivoted from the front front position obliquely inward to the left and right by a hinge that connects the upper arm and the forearm, or the pivot and angle are fixed.
(4) The seated person adjusts the backrest angle to reduce fatigue and the head holding angle to be gentle on the neck according to the above (2) in order to adjust the seated posture to one's own comfort.
Then, the holding angle is adjusted according to the above (3) by holding the upper arm or forearm from below so that the seated person can work for a long time, such as a smartphone, an electronic book, or work with fine hands.

The present invention allows a seated person to spread the left and right arm support parts to the left and right when sitting down and sit comfortably, and is compatible with the body shape and posture of the seated person for purposes such as smartphone operation and reading of the seated person. The angle of the backrest and the headrest can be adjusted, and in order to take a posture according to the purpose of the seated person, it is possible to pick up an object such as a smartphone and relieve the burden on the seated person's posture, and the burden on the arm and the fatigue of the seated person are reduced. The position and angle of the upper arm and forearm can be freely adjusted and set in order to obtain a and Furthermore, when standing up from a seated posture, it is possible to easily stand up by spreading the left and right arms to the left and right.

(Example 1)
6 is a perspective view showing an implementation method when a chair portion covered with a cushion cover is placed on the pedestal portion of No. 6. FIG. It is the perspective view which showed the method which mounted the chair frame part on the pedestal frame of 16. FIG. (A) It is the right view which showed the state which turned up and down the arm holding|maintenance part of the chair part which covered the cushion cover. (B) It is the right view which showed the state which rotated the arm holding part of a frame part up and down. (A) is a plan view showing a state in which the forearms of the chair covered with the cushion cover are rotated left and right. (B) is a plan view showing a state in which the forearm portion of the frame portion is rotated left and right; Fig. 10 is a front view showing a state in which a person is sitting on a chair covered with a cushion cover and using a smartphone or the like; Fig. 10 is a right side view showing the pivoting state of the backrest portion of the chair covered with the cushion cover; Fig. 10 is a right side view showing the pivoted state of the headrest of the chair covered with the cushion cover; Fig. 10 is a right side view showing a so-called straight-necked posture in which a load is applied to the neck, shoulders, and back of a conventional chair, causing pain. Fig. 10 is a right side view showing a state in which a smartphone or the like is used on a chair covered with a cushion cover; Fig. 10 is a perspective view showing a state in which a person can relax on a chair covered with a cushion cover even when not working. (Example 2) Fig. 10 is a perspective view showing a method of placing a chair having legs covered with cushion covers; It is the perspective view which showed the implementation method at the time of mounting the chair part of a chair frame on a leg part.

The configuration of the legless chair shown in FIG. 1 is such that the seat portion 2 is placed on the pedestal portion 6 so as to rotate, the backrest portion and the headrest portion move back and forth, and an arbitrary angle can be maintained. In the left and right portions, the upper left arm 4AR (see FIGS. 3 and 4) that moves up and down from the horizontal front position to the diagonally downward direction and the left upper arm 4AR (see FIGS. 3 and 4) that moves up and down. It is composed of a right arm 4BL that moves horizontally from the position to the inside and a left forearm 4BR that moves in the same manner.

The frame structure 10 of the legless chair shown in FIG. The upper right arm 14AL and the upper left arm 14AR are attached to the right and left of the protruding portion of the upper part of the backrest, and the left and right hinges 22 move the upper right arm 14AL and the upper left arm 14AR up and down from the horizontal forward position diagonally downward. It can be moved and held at an arbitrary angle, and the forearms connected by hinges 23 to each end can be moved horizontally left and right from the front position obliquely inward, or can be moved left and right by the hinge 23 . and a left forearm 14BR that moves in the same manner.

A turntable 24 is provided between the base portion 16 and the seat portion 12 so that the seat portion can be rotated left and right.

In the frame structure, as shown in FIG. 2, the left and right side portions 12 of the seat surface are bent obliquely upward, and the width of the raised rear portion 3A and the central portion 3B of the backrest are the same, and the upper portion 13 corresponds to the shoulder. The part is configured as a wide width that protrudes to the left and right.

As shown in FIGS. 8 and 9, the backrest and headrest can be moved back and forth by a ratchet mechanism or the like to hold the upper body and neck of the seated person at any desired angle.

The arms 4R and 4L are movable in multiple stages from a substantially horizontal position P1 to a lower position P2 by a hinge 22 having a ratchet mechanism or the like, and are fixed at a position desired by the seated person to hold the arms. A hinge 23 having a ratchet mechanism or the like allows the forearm at the tip of the arm to move in multiple steps from the front parallel extension position P11 to the front arm crossed position P12. and hold the forearm. Alternatively, it can be freely moved left and right simply by the hinge 23 .

The structure of the backrest, headrest, upper arm, forearm, and each hinge allows the seated person to maintain their desired posture as shown in Figs. It is possible to prevent numbness and fatigue of the upper arm and forearm by holding the upper arm and forearm from below. Also, as shown in FIG. 12, the forearms can be drawn to the upper half of the body so that the body can be hugged and wrapped, so that a relaxing effect can be obtained. In addition, you can expect a sense of security and a relaxing effect as if you were holding a hugging pillow.

In addition, when sitting or leaving the seat, the upper arm and forearm can be moved up and down and widened to the left and right.

In addition, if the upper arm and the forearm move left and right without using the hinge 23 and move to enclose the seated person, and if the same function as described above, such as holding the arm from below, occurs, synthetic resin etc. A flexible material may be used.

13 and 14 show the state of being installed on the chair leg.

1 Chair with cushion cover 2 Seat of chair with cushion cover.
3 Backrest portion 4L of chair portion Left arm holding portion 4R of chair portion covered with cushion cover Right arm holding portion of chair portion covered with cushion cover 5 Headrest portion 6 Base portion 10 Chair frame Fig. 12 Frame seat portion 13 Frame backrest portion 14L Frame left arm holding part 14R Frame right arm holding part 15 Frame headrest part 16 Frame base 20 Frame backrest hinge 21 Frame headrest hinge 22 Frame upper arm hinge 23 Frame forearm hinge

Claims (1)

A pedestal that rotates the seat to hold the upper body of the seated person, a seat that bends the left and right sides diagonally upward and bends the rear of the seat upward to stabilize and hold the waist, and both left and right shoulders. The backrest and headrest protruding to the left and right are connected by hinges so that they can be moved and held back and forth, respectively. The overall structure is movable and connected with hinges so that it can be supported or held from below. The arm of the upper arm holding part and the forearm arm are connected by a hinge so that it can move up and down diagonally downward and be held at an arbitrary angle. It was connected by a hinge so that it could rotate horizontally to the left and right and be held at an arbitrary angle, and the left and right arm support parts could be operated independently including) chairs.

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