JPH08257062A - Structure of chair allowing to stand from sitting state - Google Patents

Abstract

PURPOSE: To facilitate the independent sitting on standing up from a chair of a patient, contribute to the movement between the seat of an automobile and a wheelchair, and extend the moving range of the patient. CONSTITUTION: When a seat 4 is lifted to a leg base 1, a horizontal shaft 16, a horizontal shaft 17 and a backrest 8 are together pulled and moved by the circular movement of the connecting beam power point hole 13 of a connecting beam 10 from an origin position 23 within a guide cam groove 11 to a final point position 25 by a fixed length between the connecting beam power point hole 12 and connecting beam power point hole 13 of the connecting beam 10. The above motion is carried out on both lateral sides of a chair. Thus, the backrest 8 is moved forward to the seat 4 by the distance from the origin position 23 to the final point position 25. By the forward movement of the backrest 8, the backrest 8 is guided by the guide cam groove 11 having a special curve, gradually laid vertically, and raised together with the seat 4.

Description

Detailed Description of the Invention

[0001]

[Industrial field of use] To provide a chair structure that makes it easy for persons with physical disabilities, elderly people, and other people with weak legs to easily sit and stand on a chair without the help of an attendant. In particular, the height of the seat can be designed to be low, and it can be used as a car chair.

[0002]

2. Description of the Related Art In the conventional products, only the seat of the chair is lifted up. For this reason, the backrest leans forward together with the seat and pushes the patient's body forward while standing upright. Further, in a chair in which the seat and the backrest are separated from each other, only the seat tilts and lifts the buttocks, so that the clothes are pulled in close contact with the backrest, causing physical and mental discomfort to the patient. .

[0003]

[Problems to be Solved by the Invention] The chair actuating mechanism lifts the seat in an inclined manner, and at the same time, the backrest rises nearly vertically, and the backrest moves the seat forward,
The patient stood up and sat down easily without resorting to the help of a caregiver.

[0004]

[Means for Solving the Problems] Raise the seat upright. 2. The backrest rises near the vertical. 3. The backrest moves forward. By operating the above three operations at the same time and further reducing the height, it is possible to design as a chair for an automobile.

[0005]

[Operation] By human power or electric motor, hydraulic mechanism,
As shown in FIGS. 1 to 4, the buttocks of the patient sitting on the chair are tilted and lifted.

The figure shows the main frame of the chair.
1 to 4, at this time, due to the curved curve of the cam of the guide cam groove (11), the backrest (8) rises vertically closer than the seat position and the backrest (8) advances and the back of the patient is backed up. Hold the position vertically or at any set angle and push it forward to stand up naturally.

[0007]

EXAMPLE The structure of the chair of the present invention is as shown in FIG.
The footrest front part (2) of the footrest (1) and the seat front surface (5) of the seat (4) are connected by a plurality of hinges (7).

Referring to FIGS. 1 and 2, the structure of the seat (4) of the chair is shown. FIG. 2 is an enlarged view of the main part of the seat (4). The left and right seat sides (6) of the seat (4) have guide cam grooves (11), respectively, and have two horizontal axes E (16) and F (1).
7) penetrates through the guide cam groove (11) and moves back and forth along the cam groove.

In FIG. 2, a horizontal axis E (16) and a horizontal axis F (17) penetrating the left and right guide cam grooves (11) are the backrest shaft holes C (below the left and right backrests 8). 14) penetrates through the backrest shaft hole D (15) in a rotatable state.

In FIG. 2, the E horizontal axis end (18) of the horizontal axis E (16) is then the connecting rod B of the left and right connecting rods (10) and the B force point hole (1).
It penetrates 3) in a rotatable state. However, horizontal axis E
(16) It has a structure in which the backrest (8) and the connecting rod (10) do not come off from the end of the horizontal axis F (17).

In FIG. 1, next, the connecting rod A force application holes (12) of the left and right connecting rods (10) are rotatably fixed to the side surface fixed positions (22) of the left and right foot stand side surfaces (3). Install.

Although not shown in the figure, the seat (4) is placed against the footrest (1) by human power, an electric motor, a hydraulic mechanism or the like.
As shown in FIG. 3, the front part (2) of the footrest (1) and the front surface (5) of the seat (4) are connected by a plurality of hinges (7) as shown in FIG. The seat (4) is lifted in an inclined state with the hinge (7) as a fulcrum. The state of progress of this lifting action is illustrated in FIGS. 1 to 3 and 4.

Referring to FIGS. 5, 6 and 7, the relationship among the guide cam groove (11), the connecting rod (10), the horizontal axis E (16), the horizontal axis F (17) and the backrest (8) at this time. Will be expanded and explained. The right end of the guide cam groove (11) in the figure is the origin position (23),
The middle position is the middle point position (24) and the left end is the final point position (25).
And

FIG. 5 is a view when the seat (4) is not lifted up with respect to the pedestal (1), and the communication rod A force application hole (12) of the communication rod (10) is on the side surface (3) of the pedestal. Side fixed position (2
2), the connecting rod B power point hole (13) is the backrest (8).
At the E-horizontal end (18) of the horizontal axis E (16).
At this time, the connecting rod B force point hole (13), the horizontal axis E (16), and the horizontal axis F (17) are the origin position (23) of the guide cam groove (11).
Exists.

In FIG. 5, from the mounting position of the connecting rod A power point hole (12) of the connecting rod (10) to the connecting rod B power point hole (13).
The length is up to the left and right of the chair. Seat (4) from when the seat (4) is not raised against the footrest (1)
As shown in FIG. 6, the contact rod A power point hole (1
The horizontal axis E (16) and the horizontal axis F (17) coaxial with the connecting rod B force point hole (13) with 2) as a fulcrum form an arc, and the inside of the guide cam groove (11) is moved from the origin position (23). It gradually moves to the intermediate point position (24). Therefore, the horizontal axis E (16),
The backrest (8) coaxial with the horizontal axis F (17) is the seat (4)
To move forward.

In FIG. 7, the seat (4) is placed against the footrest (1).
Is further lifted, horizontal axis E (16), horizontal axis F (1
7) and the backrest (8) move from the intermediate point position (24) in the guide cam groove (11) to the final point position (25).
This phenomenon of movement means that the backrest (8) pushes the patient forward.

When the seat (4) is tilted and lifted with respect to a patient who is seated on a chair, the patient's body becomes unstable because of a gap between the back and the backrest (8) due to an angle. The above-mentioned forward movement of the backrest (8) means that the back of the patient is entrusted to the backrest (8) from sitting to standing.

When seated, the angle between the seat (4) and the backrest (8) is 5 to 10 degrees ergonomically. Backrest (8)
Of the guide cam groove (1
The backrest (8) is guided to 1) and gradually becomes vertical and rises with the seat (4). The special curve is the cam curve of the guide cam groove (11), and the backrest angle of seat fold is 5 to 5.
The origin position (23) is set at 10 degrees, the position where the backrest (8) gradually becomes closer to the vertical position is set as the midpoint position (24), and the position at which the patient's back is pushed out is the final point position (25). The special curve was drawn by picking up each position point from the drawing of the angle change of the backrest (8). On the contrary, when seated, three actions are simultaneously activated to make the patient sit upright.

FIG. 8 shows the horizontal axis E (16) and the horizontal axis F (17).
Instead, the backrest cross beam (9) is strengthened to provide a plurality of cam rollers G (20) and cam rollers H (21), which are associated with the guide cam groove (11),
The same result is obtained by associating the contact rod (10) with (21). In FIG. 9, since the patient's buttocks slide forward like a slide when the seat (4) is lifted up, a slip stopper (26) which can be pulled out forward is provided below the leg stand (1). . An armrest (27) is provided on the backrest (8).

[0020]

[Effects of the Invention] When a physically handicapped patient stands up and sits in a chair, the caregiver turns both hands to both sides of the patient and ties both hands at the back of the patient, and the patient turns both hands around the caregiver's neck to hold the neck. Later, he tied his hands and stood the patient. Because of that, most caregivers end up injuring the tibia. The present invention is a single operation,
Seat (4) lifts up diagonally and at the same time backrest (8)
Ascend vertically and move the backrest (8) forward to erect the patient. On the contrary, when seated, it has the opposite effect,
The three actions operate at the same time, and it is easy for the patient to easily sit and stand on the chair without imposing a physical burden on the patient.
Furthermore, it contributes to the movement between the car seat and the wheelchair, and expands the range of action of the patient.

[Brief description of drawings]

FIG. 1 is a skeleton structure view of a chair as seen from an oblique front side.

FIG. 2 is an enlarged view of a main part of the present invention as seen obliquely from the front.

FIG. 3 is a view of the chair in the middle of the process of change in operation, as seen obliquely from the front.

FIG. 4 is a view of the end of the stroke of the change in the operation of the chair as seen diagonally from the front.

FIG. 5 is an enlarged side view of the main operation of the seat (4) showing a seated state.

FIG. 6 is an enlarged side view of the main operation, showing the seat (4) in the middle of operation.

FIG. 7 is an enlarged side view of the main movements of the seat (4) showing the end of movement.

FIG. 8 is an enlarged view of a separate structure of the main part of the present invention as seen obliquely from the front.

[Explanation of symbols]

 Footrest (1) Footrest front (2) Footrest side (3) Seat (4) Seat front (5) Seat side (6) hinge (7) Backrest (8) Backrest crossbeam (9) Connecting rod (10) ) Guide cam groove (11) Communication rod A force point hole (12) Communication rod B force point hole (13) Backrest shaft hole C (14) Backrest shaft hole D (15) Horizontal axis E (16) Horizontal axis F (17) E Horizontal axis end (18) F Horizontal axis end (19) Cam roller G (20) Cam roller H (21) Side fixed position (22) Origin position (23) Intermediate point position (24) Final point position (25) Anti-slip (26 ) Armrest (27)

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[Procedure amendment]

[Submission date] July 11, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Figure 9

[Correction method] Added

[Correction content]

FIG. 9 is a view showing the chair of FIG. 1 with a non-slip (26) and an armrest (2).
FIG. 7 is a view seen from the front diagonally, in which 7) is provided.

Claims (2)

[Claims] 1. Referring to FIGS. 1 and 2, there are guide cam grooves (11) on left and right seat side surfaces (6), and two or more horizontal axes E (16) and horizontal axes F (17) are provided. Movably penetrates through the guide cam groove (11), and rotatably penetrates through the backrest shaft holes C (14) and the backrest shaft holes D (15) of the left and right backrests (8). Next, the horizontal axis E (16) shows the left and right connecting rods (1
The connection rod B force application hole (13) of 0) is rotatably penetrated. Left and right connecting rods (10) connecting rod A power point hole (12)
Is rotatably attached to the side surface fixed positions (22) of the left and right foot stand side surfaces (3). In FIG. 5, the length from the mounting position of the connecting rod A force point hole (12) of the connecting rod (10) to the connecting rod B force point hole (13) is constant on both sides of the chair. As the seat (4) is lifted from the pedestal (1), in FIG. 6, the horizontal axis E (16) is coaxial with the connecting rod B power point hole (13) with the connecting rod A power point hole (12) as a fulcrum. Axis F (17)
Moves in an arc. The track traces gradually move from the origin position (23) to the intermediate point position (24) and the final point position (25) in the guide cam groove (11) of the seat side surface (6).
Therefore, the backrest (8) coaxial with the horizontal axis E (16) and the horizontal axis F (17) moves forward. At this time, the backrest (8) is vertical by the special curve of the guide cam groove (11),
Alternatively, it rises at a set angle as required. Therefore, the patient sitting on the chair lifts his / her waist and at the same time the back is pushed forward and stands up. However, the horizontal axis E (16),
A guide cam groove (11) through which the horizontal axis F (17) penetrates, a backrest shaft hole C (14) of the backrest (8), a backrest shaft hole D.
(15) The insertion order of the connecting rod B force application hole (13) is not restricted by design. 2. A horizontal axis E (16) and a horizontal axis F (17) are shown in FIG.
Instead, a plurality of cam rollers G (20) and cam rollers H (21) are rotatably attached to the backrest (8), associated with the guide cam groove (11), and associated with the cam roller with a connecting rod (10). The result is the same with the method. In FIG. 9, since the patient's buttocks slide forward like a slide when the seat (4) is lifted up, a slip stopper (26) that can be pulled out forward is provided below the leg stand (1). Also,
An armrest (27) is provided on the backrest (8) to protect the patient's body from slipping. Thus, with one operation, 1. Lift the seat (4) diagonally 2. At the same time, raise the backrest (8) vertically or at any angle; 3. Further, the backrest (8) is moved forward to raise the patient. As described above, the three actions work simultaneously to facilitate the sitting and standing of the patient on the chair. Further, if this structure is installed on both the vehicle and the wheelchair, the patient can be facilitated to move between the vehicle seat and the wheelchair seat. The structure of the chair which can stand up from the sitting state of this invention.