JP2014226528A - Chair capable of displacing gradient of seat part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which is conceived from a nobel view point, by which handicapped people and elderly people with weakened physical fitness can sit and stand up easily by their own power because such people have difficulty in sitting on and standing up from a chair and often require assistance of helper or the like.SOLUTION: A chair capable of displacing gradient of a seat part is constituted to make the motion of sitting and standing up easy by being formed so that a seating person does not sit in a seat part of the chair by sinking his/her body and the seat part 2 is located near an upright body beforehand.

Description

  In the present invention, when the seat is not in use, the seat is inclined at about 45 degrees to 60 degrees at the top, and when a person is seated, the weight pushes down the seat against the force that pushes up the seat, and at the bottom There is a seating part that stops in an almost horizontal state of use, and when a person stands up, the force that pushes up the seating part rises while assisting the standing-up operation, and stops at an inclination of about 45 to 60 degrees at the top. It is related with the chair characterized by this.

  The height of the seating part of the chair is almost horizontal when working, and the knees are slightly higher when comforting. In some cases, you should bend your knees, bend your knees, lower your buttocks to the height of the seat while applying a load on your thigh muscles, and if the seated person stands, bend your upper body slightly forward Put the whole weight on the knees, stretch the thigh muscles, raise the buttocks from the seating part, and stand upright.

  As described above, in the chair with the seating portion fixed, the seating and standing operations physically impose a burden on the knees, waist, and thighs.

  JP2009-219702

As described in Patent Document 1, there is one that adjusts the angle of the seating portion and the backrest for the seated person, but the seating portion does not wait in advance according to the posture of the seated person in advance, and the angle adjustment is also electric A motor is used.
Registration Utility No. 3079418

  As disclosed in Patent Document 2, there is a reclining seat that uses an electric motor to assist an operation in which a seated person stands up.

  Armrests for assisting seating and standing movements (arm support) and backrests (back support) for seating movement and seating stability are effective elements, but especially those with physical disabilities and elderly people with weak muscles However, there is a need for a chair having a function that makes it easier to sit and stand up by oneself and that does not require the use of power such as an electric motor or the operation of equipment in order to minimize the assistance effort of helpers and the like.

  In order to solve the problems as described above, the present invention does not bend the hips in the air and lower the buttocks to the seating section, but the seating section is waiting near the buttocks of the person who is sitting. If you put your weight on it, you can sit stably in a fixed position, and when you stand up, tilt the upper body slightly forward to reduce the weight applied to the seating part, so that the seating part can be It is possible to lift up from below and stand upright.

  The ability of people with physical disabilities, people with no physical strength after illness, elderly people with weak muscles, etc. to sit and stand on their own chairs without waiting for the help of helpers gives them more freedom of action and physical function. It is expected to contribute to the improvement of health and health, and the labor of helpers will also be released and will be used for more effective work.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of the present invention, in which a seat 2 that is pivotably attached to a front portion of a chair body 1 by a hinge 3 is always pushed up by a gas spring 5. 5 is pivotally connected to a slider 8 by a pivot 7. The slider 8 is given an arbitrary position by a feed screw 10 rotated by a knob 11 along a guide rail 9, and the lower end of the gas spring 5 is It is fixed to the chair body 1 via the pivot 6 and bears the load applied to the seat 2. When the seat 2 is loaded from above, the gas spring 5 is compressed, and the free end of the seat 2 abuts against the chair body 1 and stops. When the load applied to the seating portion 2 is removed, the seating portion 2 rises due to the repulsive force of the gas spring 5 and stops at the position where the gas spring 5 is extended to the longest. The reason why the gas spring 5 is used in the embodiment shown in FIG. 1 is that the gas spring 5 subjected to a load can obtain a substantially constant repulsive force over the entire stroke, and the expansion and contraction due to the load can provide a motion that acts as a brake. This is because there is an advantage that the movement of the seating portion 2 is smooth at a constant speed.

  The position of the pivot 7 that supports the gas spring 5 is adjusted in order to obtain an appropriate support force according to the weight of the person sitting on the seat 2, but the knob 8 is turned and the slider 8 is moved to the seat 2 by the feed screw 10. When the pivot 7 is moved close to the fixed end by the hinge 3, the gas spring 5 is compressed even if the load applied to the seating portion 2 is small, and on the contrary, the slider 8 is moved to the free end side of the seating portion 2. The farther the position is from the fixed end of the seating portion 2, the larger the load of the seating portion 2 that compresses the gas spring 5 is required, so that a repulsive force suitable for the weight of the seated person can be obtained.

In order to appropriately adjust the distance between the seating portion 2 and the floor 4 according to the length of the leg of the seated person, the embodiment shown in FIG. The arm support (armrest) 12 and the back support (backrest) 13 are not indispensable elements in the construction of the chair according to the present invention, but the operations such as sitting and standing can be performed stably and easily, and the risk of falling is prevented. Is a valid element.

  FIG. 2 and FIG. 3 show conceptual diagrams of the implementation state of the present invention. In FIG. 2, when the person 19 who is about to sit now stands on the back of the seating portion 2, the distance between the buttocks and the seating portion 2 is small, so that it is easy to touch this, and the weight is directly applied to the seating portion 2. If so, the seat 2 descends with the upper body resting and stops at the lowermost position to the state shown in FIG. 3. When standing up, the upper body is tilted slightly forward to reduce the weight on the seat 2 The buttocks are lifted by the ascending force of the seating portion 2, and can stand upright in the state shown in FIG. 2 with almost no physical strength.

Different forms of carrying out the invention

  FIG. 4 shows an example in which a coil spring 15 is used in place of the gas spring 5 in the first embodiment.

  FIG. 5 shows an example in which a torsion coil spring 16 is used in place of the gas spring 5 in the first embodiment.

  FIG. 6 shows an example in which a leaf spring 17 is used in place of the gas spring 5 in the first embodiment.

  FIG. 7 shows that the seat 18 is positioned in front of the chair body 1 when the seat 2 is in an inclined state by attaching the member 18 between the hinge 3 connecting the chair body 1 and the seat 2 in the first embodiment. This shows that the person who is seated is in a standby state closer to the person who is seated and that the operation of sitting and standing up becomes easier.

  Overall side view of one embodiment of the present invention   and   Conceptual diagram of the state of using the present invention   Partial side view of Embodiment 2 of the present invention   The partial side view of Example 3 of this invention.   The partial side view of Example 4 of this invention.   The partial side view which showed the structure which improves usability further in Example 5 of this invention.

  The chair according to the present invention facilitates the operation of not only disabled people and elderly people but also workers who frequently sit and stand up, and can be one of the furniture that is convenient not only in hospitals and nursing homes but also in general homes. It will be a powerful product for furniture makers, office machine makers, etc.

1: Chair body 2: Seating part 3: Hinge 4: Floor 5: Gas spring 6: Pivot 7: Pivot 8: Slider 9: Guide rail 10: Feed screw 11: Knob 12: Arm support 13: Back support 14: Leg Part 15: Coil spring 16: Torsion coil spring 17: Leaf spring 18: Member 19: Person

Claims (1)

  A seat that is pivotally attached to the chair body with a hinge at the front end and can move in the vertical direction around the hinge at the front is applied with a constant force to push it upward from below. When the person is seated in this state, the seating part sinks and settles in a state of almost horizontal use at the bottom, and the person stands up. Is a chair comprising a seating portion that is restored to an inclined position of about 45 degrees to 60 degrees again by a push-up force from below according to a reduction in weight applied to the seating portion.

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