JP3709421B2 - A self-supporting chair that stands up naturally - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[Technical Field] The present invention relates to a self-supporting chair that can be stood up naturally so that a sick person or an elderly person can easily stand up by themselves without borrowing the power of another person from a sitting chair.
[0002]
[Prior art]
In general, when standing up from a sitting chair, it is extremely difficult to stand up with just the knees and legs without using the strength of the arms, and even a healthy person usually increases the overall weight by extending the hand on the armrest. He lifts his hips, moves his weight to the knees and legs, and then stands up straight with his knees and legs.
[0003]
However, even for a healthy person, it is not easy to lift the waist by supporting the weight with the power of the hands and arms on the armrests, and it will put a heavy burden on the knees and legs, even if it is a sick person with no physical strength or an elderly person Since the strength of the hands and arms, as well as the knees and legs, are weak, it is extremely difficult for a person to stand up from a chair by themselves.
[0004]
For this reason, conventionally, there is a chair that assists easy to stand up by tilting the seat plate forward by utilizing the lever action with the front portion of the armrest as a power point. (For example, see Patent Document 1)
[Patent Document 1]
Design registration No. 1075828 (perspective view)
[0005]
Moreover, what is operated using mechanical power, such as a motor, is also proposed. (For example, see Patent Document 2)
[Patent Document 2]
JP2001178787
[0006]
Further, there is a proposal of a configuration that uses a spring to assist the rising. (For example, see Patent Document 3)
[Patent Document 3]
JP-A-10-179644
[0007]
[Problems to be solved by the invention]
The configuration of Patent Document 1 that is a conventional proposal is that the fulcrum is provided in the center of the armrest itself, and the rear part and the rear part of the seat plate are linked. When standing up, the front part of the armrest part is pushed down with the arm, It seems that the seat plate 13 is inclined at the rear part to lift the buttocks to make it easier to stand up.
[0008]
However, if you push down the front part of the armrest with your arm, you will feel uneasy about the lateral balance and you will have to support a considerable amount of weight with your arm. Even if assistance is made, it is difficult to stand up and the front part of the armrest moves up and down, it is actually difficult to use, there is no gap between the trunk and arm of the seated person, and there is a caregiver It is difficult for the caregiver's arm to enter the armpit and to hold it.
[0009]
In addition, when the front part of the armrest is pushed down with the arm, the rear end of the seat plate is lifted and lifts the butt of the seated person, but the reaction of pushing the body backward acts on the arm, obstructing the movement of the center of gravity and making it difficult to stand up.
[0010]
In addition, the movements of the armrest and the seat plate are uniquely determined, and it is difficult to use because a certain movement is forced for the seated person to stand.
[0011]
In the apparatus using the mechanical force of Patent Document 2, the motor is heavy, the troublesomeness of connecting to an outlet and the installation location are limited, and it is difficult to move indoors.
[0012]
The thing using the spring of patent document 3 needs to match the rising speed with a spring, and is not flexible.
[0013]
The present invention does not lift the weight with the force of the arm and support the weight with the arm to stand up, but promotes the slight arm force with this action, and further uses the weight load on the sole. The chair that promotes self-poweredness that can stand up easily with your own power, and in particular, the armrest is not a vertical movement, but a feature that pushes and opens both sides of the seat. Thus, the upper body is tilted forward and it stands up in a natural state, and a work space is generated beside the seated person to make it easier for a caregiver to hold it.
[0014]
[Means for Solving the Problems]
The present invention relates to an armchair in which a seat plate 3 is provided on the upper surface of a frame 2 having an armrest portion 1, and the front end of the lower surface of the seat plate 3 is attached to a seating shaft 4 provided on the frame 2. In addition to being tiltable, the free ball portion 5 a at the tip of the operating rod 5 that supports the armrest portion 1 and opens sideways is brought into contact with the lower surface of the seat plate 3.
[0015]
A hooking portion 6 serving as a fulcrum for the operating rod 5 is provided on the push-up plate 7, and a lower edge of the push-up plate 7 is provided on the lower frame body of the frame body 2 and is attached to the fulcrum shaft 8 so as to be tiltable. 9 is fixed to the rear edge of the lever 9 so that a load is applied to the tip of the lever tread 9 so that the attachment portion 6 of the operating rod 5 is pushed up.
[0016]
Therefore, by placing the hand on the armrest 1 and pushing it open in the lateral direction, the seat plate 3 is tilted forward by the lever action of the operating rod 5, and the center of gravity of the person standing up from the chair moves forward tilting, and at the same time the lever plate 9 is applied. The forward leaning of the seat plate 3 is further strengthened by the weight load, and the waist is pushed out together with the protruding armrest portion 1 to promote the power of the person trying to stand up, so that it can stand up very easily by itself. .
[0017]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the seat plate 3 of the chair can be tilted, and the free ball portion 5a at the tip of the laterally-opening operating rod 5 on both sides supporting the armrest portion 1 is brought into contact with the lower surface of the chair so that it becomes a fulcrum of the operating rod 5 The lower edge of the push-up plate 7 provided with the attachment portion 6 is fixed to the rear edge of the lever tread plate 9 that is tiltably attached to the fulcrum shaft 8 of the lower frame body of the frame body 2. By applying a load, together with the push-up plate 7, the attachment portion 6 of the operating rod 5 is further pushed up.
[0018]
When a person sitting on a chair tries to stand up, first, when he puts his hand on the armrest 1 and pushes it open in the lateral direction of the seat with the force of his arm, both actuating rods 5 use the heel 6 as a fulcrum. The free ball portion 5a at the tip as the action point is pushed up, and the seat plate 3 brought into contact therewith is pushed up.
[0019]
In this case, the upper and lower hands are tilted forward because the arms and shoulders are trying to align the left and right hands and shoulders by pushing the arms open to both sides of the seating surface. Instead of hindering movement, it is easy to balance the center of gravity to the left and right, and the upper body of the seated person is pushed forward without swaying, facilitating forward movement of the center of gravity and facilitating standing up.
[0020]
Furthermore, depending on the shape of the armrest portion or the rotation direction of the operating rod 5, the joints of the shoulder and the wrist rotate, the back of the hand faces rearward, and the upper body is pushed forward.
[0021]
Then, as shown in FIG. 3, the hip a is lifted while the knee of the sitting tree is stretched, the center of gravity of the body moves forward, and the arm b is pulled slightly backward, so that the head c and the chest d protrude. Thus, the center of gravity of the moved weight is slightly over the vicinity of the knee e.
[0022]
At this time, the weight load has moved to the heels of both feet that are in contact with the front edge of the lever tread 9, and the rear edge of the lever tread 9 pushes the push-up plate 7 by lever action as shown in FIG. Raise and push up the rear part of the seat plate 3 in contact with the free ball part 5a of the upper working rod 5 to lift and push out the buttocks a on the upper part, so that the upper body of the body moves right above the knee and is in an upright state. Become.
[0023]
In this case, as the push-up plate 7 is tilted forward, the armrest portion 1 of the operating rod 5 having the heel portion 6 is also pushed forward, and the upper body of the body is pushed forward together with the hand holding the armrest portion 1 to the front. Helps move the body's center of gravity.
[0024]
Further, the tip of the operating rod 5 pushes up the seat plate 3 by the action of the arm pushing the armrest 1 and the action of the rod stepping on the lever stepping plate 9. At this time, the tip of the operating rod 5 is operated by the seated person. Because it can move freely according to the situation, it can follow the will of the seated person and stand up with any movement.
[0025]
When the seated person puts his hand on the armrest 1 and the caregiver steps on the lever tread plate 9, the center of gravity of the seated person increases, and the seated person approaches the caregiver to create a gap between the trunk and the arm. Easy to hold.
[0026]
In other words, in this application, only by the side opening movement of the arm of the armrest part, the inclination of the seat plate 3 moves the center of gravity to promote the power of the standing person, and almost no load on the arm and knee is applied. You can easily put your body in a vertical state and stand up easily with your own power.
[0027]
Therefore, even a sick person or a weak elderly person can stand up in a natural state with little force on his knees and legs with only his small hand. Further, since the present invention has a simple structure, the invention of claim 1 can be applied to a wheelchair, an automobile seat, or a Western-style toilet seat, and the invention of claim 2 is a seat chair without legs. It is also applicable to the case of.
[0028]
【The invention's effect】
The present invention supports the armrest 1 and leverages the lever 5 to push it laterally on both sides of the seat plate. At the same time, by applying a weight load to the tip of the lever step plate 9, the rear portion of the tiltable seat plate 3 is provided. This is a solution that pushes up with a strong inclination and is not solved only by a heavy mechanism, but provides a solution that combines a simple mechanism and ergonomics.
[0029]
In other words, in general, arm strength and leg strength are required to stand up from a chair, but in the present invention, the lever action allows the arm to stand up easily with a slight arm force. , Can stand up with the distribution according to the leg strength, the tilting action of the seat plate 3 helps the person who sits down, significantly reduces the force on the arm, and with little weight on the knees and legs, It has the effect of being able to stand up naturally in the natural state, and it has the effect of being able to stand up very easily with its own small power even for the sick and weak elderly.
[Brief description of the drawings]
FIG. 1 is a side view of the present invention.
FIG. 2 is a front view of the present invention.
FIG. 3 is a side view showing a use state of the present invention.
FIG. 4 is a side view showing a use state of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Armrest part 2 Frame 3 Seat plate 4 Attaching shaft 5 Actuation rod 6 Attaching portion 7 Push-up plate 8 Support shaft 9 Lever tread

Claims (2)

In an armchair in which a seat plate 3 is provided on the upper surface of a frame 2 having an armrest portion 1, the armrest portion 1 that pushes the rear portion of the seat plate 3 attached to be tiltable in the lateral direction on both sides of the seat plate. The tilting mechanism provided on the lower frame of the frame 2 is provided with a means for pushing up the lever by the lever of the operating rod 5 that supports the lifting rod 7 and the push-up plate 7 provided with the attaching portion 6 as a fulcrum of the operating rod 5. Means fixed to the rear edge of the lever tread 9 and applying a load to the tip of the lever tread 9 to further push up the attachment portion 6 of the operating rod 5 and to make the inclination of the seat plate 3 stronger; The center of the seated person is moved forward by the inclination of the seat 3 by pushing the armrest portion 1 laterally on both sides of the seat, the weight of the lever tread 9 is applied, and the seat 3 is inclined. When you stand up from a chair, you can help yourself and get up very easily. Naturally stand up self-promoting chair is characterized by. The rear part of the seat plate 3 that can be tilted by being attached to the frame 2 is pushed up by the tip of the lever 杆 5 that opens laterally with the attachment part 6 as a fulcrum, and the center of gravity of the person's body weight The self-supporting chair that can stand up naturally according to claim 1, wherein the chair is moved forwardly.

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