JP2006230851A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively support stand-up action of a person who is not mobile such as an elderly, a handicapped person by a simple method without requiring any motor or a complicated driving mechanism. <P>SOLUTION: At a chair where a seat part 4 is fitted to a leg part 1 in a vertically movable state, an arm 9 whose front end is made to be a foot-placing step 10 is fitted to the leg part. The rear end of the arm is connected to the lower surface of the seat part through a connection rod 11 so as to push up the seat part through the connection rod linked with stand-up motion in which the body weight is applied to the foot-placing step. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a chair that facilitates standing up of a person with weak legs such as an elderly person or a handicapped person, and in particular, relates to a standing up auxiliary chair that allows a seat portion to be pushed up in conjunction with a standing up action.

  Conventionally, as a chair for assisting a standing motion of a person with weak legs such as an elderly person or a handicapped person, for example, there is a chair that is lifted and lowered using a driving means such as a motor. (For example, refer to Patent Document 1).

In addition, for example, the seat part is lifted in conjunction with the rising operation without using such power means.For example, the armrest part is attached to the seat part integrally, and the front end of the armrest part is attached at the time of standing up. There are some which, by depressing, rotate the seat part, which is rotatably attached at the front end, so that the rear part can be lifted. (For example, refer to Patent Document 2).
Japanese Patent No. 3202151 (page 5-6, FIG. 8) JP-A-8-187137 (2nd page, FIG. 5)

  Among the above-mentioned conventional standing auxiliary chairs, the former that uses a driving means such as a motor to raise and lower the seat is complicated and expensive, and is heavy and heavy. This requires a power source and the like, so that it is difficult to move and the place of use is limited.

  In addition, although the latter is designed to rotate the seat with the armrest, the structure is simple and does not require a power source, but the armrest for supporting the body moves and the seat also rotates, If you put your weight on the armrest when standing up, your balance may be lost, especially for those who use this type of chair, such as elderly people, which could cause unexpected accidents such as falls. Further, in many cases, a person who needs this type of chair has a problem that his arm is weak and cannot be operated so that the function can be sufficiently exhibited.

  This invention makes it a subject to solve the problem which the chair provided with the function which assists the said conventional standing motion.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a chair in which a seat part is attached to a leg part so that the leg part can be raised and lowered. It is attached so as to be able to swing, and the rear end of this arm is pivotally attached to the lower surface of the seat via a connecting rod, so that the seat moves to the arm via the connecting rod in conjunction with the rising motion that puts weight on the footrest step. It is characterized in that it can be pushed up like a lever.

  The invention described in claim 2 is characterized in that, in the configuration of the invention described in claim 1 above, the connecting rod is limited to a turnbuckle whose length can be adjusted.

  Among the present inventions, the first aspect of the present invention is such that the footrest step is swingably attached to the leg portion via the swing arm, and the seat portion is pushed up in conjunction with the downward movement of the footrest step. Therefore, the seat is lifted in accordance with a natural motion of standing up by putting weight on the footrest step, and assists the user's standing motion. Therefore, the standing up motion of a person with weak legs such as an elderly person or a handicapped person can be effectively supported by simple means without requiring any motor or complicated drive mechanism. Further, since the seat is not tilted or the seat is not driven by arm force, it is excellent in safety and can be easily operated by natural operation without requiring arm force. Furthermore, since a power source is not required and the structure is simple, it is easy to carry and move and is not limited in place of use. For example, it has many excellent effects that it can be incorporated into a wheelchair.

  Further, in the invention according to claim 2, since the connecting rod is constituted by a turnbuckle capable of adjusting the length, it is easy to adjust the positional relationship between the seat portion and the footrest step, and each height suitable for the user. There is an effect that the position can be easily set.

  Hereinafter, the present invention will be described in detail based on illustrated embodiments.

  FIG. 1 is an overall perspective view of a chair having a standing assist function according to the present invention, and FIGS. 2 and 3 are perspective views of a leg portion and a lower side of the seat portion, respectively. As shown in the figure, the basic structure of the chair of the present invention is such that a leg 1 to which a caster 1a is attached and a height can be adjusted via a gas cylinder device 2 on the leg 1 as in the conventional structure. The support 3 is provided and a seat 4 attached to the upper end of the support 3. Therefore, the seat portion 4 is urged by the gas cylinder device 2 so as to be constantly raised, and the operation of the gas cylinder device 2 is stopped by operating the lock lever 5 provided on the side. The seat portion 4 can be fixed and held at an arbitrary height position.

  Here, in the chair of the present invention, a member 6 is fixed in the lateral direction on the front side of the leg 1 (left front in FIG. 1), and between the pair of support pieces 7, 7 protruding from the member 6, An arm 9 is swingably attached by a shaft 8 penetrating the support piece 7.

  A metal rod 10 is attached to the tip of the arm 9 (lower side in FIG. 2) so as to be substantially T-shaped so as to penetrate in the lateral direction, and this metal rod 10 forms a footrest step. Further, the lower end of the connecting rod 11 is rotatably connected to the rear end of the arm 9 by a shaft 12, and the other end (upper end side) of the connecting rod 11 is a seat portion 4 as shown in FIG. It is connected to a receiving portion 14 provided on the lower surface of the shaft via a shaft 13 so as to be rotatable.

  The chair of this invention has said structure.

  Next, the function of the chair of the present invention having the above configuration will be described. First, in normal use, the seat 4 is seated, and the lock lever 5 is operated as necessary to place the seat 4 in a desired position. What is necessary is just to adjust height and it can be used like a normal chair in this way. At this time, the foot may be placed on the footrest step 10 while sitting on the seat portion 4, as long as the foot is placed on the footrest step 10 and the lock lever 5 is not operated even when a load is applied. The seat portion 4 does not inadvertently move up and down, and is fixed and held in that position.

  Then, when standing up, it is only necessary to place the foot on the footrest step 10 and operate the lock lever 5 with the weight moved to the footrest step 10 side to release the lock of the column 3. Thus, the seat portion 4 is movable up and down. Therefore, when trying to stand up on the footrest step 10 in this state, the arm 9 swings around the shaft 8 due to the weight applied to the footrest step 10, and this arm 9 acts like a lever to oppose the opposite side. The seat portion 4 is pushed up via the connecting rod 11 attached to. Therefore, as the foot is lowered, the butt is pushed upward, and in combination with the urging force of the gas cylinder device 2 that supports the support column 3 of the seat portion 4, the rising motion is assisted, and the leg is weak. It is possible to stand alone without the assistance of others.

  In addition, if it sets so that the footrest step 10 may contact | connect the ground in the state which stood up in this way, stability will be good and it is preferable also from the surface of handleability. This can be easily realized, for example, by configuring the connecting rod 11 with a turnbuckle whose length can be adjusted.

  As described above, the chair of the present invention is used.

  In the illustrated embodiment, a foot-shaped step 10 is illustrated as an example of the footrest step 10, but the footrest step 10 may be formed integrally with the distal end side of the arm 9 that functions like a lever. The shape is not limited to that shown in the figure.

It is the whole perspective view showing the best embodiment of the chair of the present invention. It is an expansion perspective view of a leg part. It is a perspective view of the lower surface of a seat part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leg part 2 Gas cylinder apparatus 3 Support | pillar 4 Seat part 5 Lock lever 6 Member 7 Supporting piece 8 Axis 9 Arm 10 Metal rod (foot resting step)
11 connecting rod 12 shaft 13 receiving portion 14 shaft

Claims (2)

In a chair in which a seat is attached to the leg so as to be movable up and down, an arm having a front foot as a footrest is attached to the leg so as to be swingable, and the rear end of the arm is attached to the lower surface of the seat via a connecting rod. A chair characterized in that the seat is pushed up like a lever by an arm via a connecting rod in conjunction with a rising motion that puts weight on a footrest step by being pivotally attached. The chair according to claim 1, wherein the connecting rod is formed of a turnbuckle so that the length can be adjusted.

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