JPH0319375Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a chair for elderly people with weak legs or physically disabled people.

[Background Art] Getting up from a chair or sitting down on a chair is extremely painful and difficult for elderly people with weak legs and disabled people who have difficulty bending and stretching their knees.
In other words, when you stand up from a chair or sit down, you must bend your knees slightly forward while taking your weight on them, or bend your knees while leaning your knees slightly forward while taking your weight on them. Moreover, such movements are extremely difficult for elderly people with weak legs and disabled people who have difficulty bending and stretching their knees. In particular, when standing up from a chair, it is necessary to lift the body up with the knees, and this movement is extremely painful.

[Purpose of the invention] The present invention was made in view of the above points, and its purpose is to provide a chair that allows the user to easily stand up from the chair and sit down. be.

[Disclosure of the invention] Thus, the chair according to the present invention has a base plate 5 on which the seat 2 is provided, which is disposed on the seat support base 1 so as to be movable back and forth, and the seat 2 is moved forward and backward while lifting the seat 2.
The base plate 5 is provided with a link device 17 for moving the seat 2 forward, and the seat support 1 is provided with a moving drive device 18 for moving the board 5 rearward after the seat 2 has been moved forward. The above object is achieved by providing a drive device 3 for operating the seat 2 in this manner.The present invention will be described in detail below with reference to examples.

Connecting plates 8, 8 are hung on both sides of the front lower surface of the seat 2, and rear connecting plates 9, 9 are hung down on both sides of the rear lower surface of the seat 2, respectively. A rod 10 is installed. Legs 15 are attached to the lower surface of the seat support 1, and a drive device 3 is provided on the upper surface of the seat support 1. Drive device 3
A link device 17 is provided with wheels 16 on both sides so that the upper surface of the seat support 1 can be moved back and forth by the wheels 16, and a rear end upper surface of the seat support 1 is provided with wheels 16 on both sides. It is formed by a moving drive device 18 consisting of a cylinder attached to a cylinder and operated by air pressure or hydraulic pressure. The link device 17 is formed with the following structure. That is, support plates 7, 7 are provided upright on both sides of the rear upper surface of the substrate 5, and the base ends of two bars 11, 11 are pivotally connected to the support plates 7, 7, respectively, so as to be vertically movable. Further, a reducer 12 is provided on the output shaft of the electric motor 4 provided on the upper surface of the substrate 5, and a threaded rod 13 is led out from the reducer 12. The threaded rod 13 is rotationally driven by the electric motor 4. For example, by making the reducer 12 rotatable relative to the electric motor 4, the screw rod 13 is rotated in the direction of arrow A in FIG. 1a. The threaded rod 13 is rotatably screwed into a threaded cylinder 14 having a threaded groove on its inner periphery so as to be able to be screwed forward and backward. The link device 17 is formed in this way, and the link mechanism section is connected to the electric motor 4, the threaded rod 13, and the threaded tube 1 by the two bars 11, 11.
4 respectively form a drive mechanism section. As shown in FIG. 2, a switch 6 is connected to the electric motor 4 via a control device 19 incorporating a sequence circuit, etc., and the control device 19 is also connected to a pneumatic or hydraulic control device of a moving drive device 18. be. Link device 17 formed as described above
Accordingly, the seat 2 is arranged and supported on the seat support base 1 via the base plate 5. That is, as shown in FIG. The seat 2 is supported by being pivoted to. Here, by rotating the two bars 11, 11 that constitute the link mechanism section upward, the seat 2 is moved upward and tilted forward.
To operate seat 2 in this way, each bar 1
Settings 1 and 11 have been made. In other words, in the illustrated embodiment, if shown by the fulcrums a, b, c, and d of each bar 11, 11 in FIG. 1a, =, <
,
ab〓,〓 are set so that seat 2 operates as described above. Of course, the link configuration conditions are not limited to these only.
Even if it is ac ≠, <, 〓
The point is that the link mechanism section should be constructed under such conditions that the line connecting ac rotates in a direction opposite to the clockwise direction in FIG. 1a. When seat 2 moves upward and leans forward in this way,
Since the front end upper surface of the seat 2 is rotated around the lower end of the connecting plate 8, this portion is moved forward.

However, for a chair formed as described above,
In the seated state as shown in FIG. It is maintained. When standing up from a seated position as shown in Figure 1a,
By operating the push button of the switch 6 and operating the electric motor 4, the threaded rod 13 is driven to rotate. At this time, the threaded rod 13 is rotationally driven in a direction in which it comes out of the threaded cylinder 14, and the threaded cylinder 14 moves forward, so that the seat 2 is lifted up by the threaded cylinder 14. When the seat 2 is lifted in this way, the seat 2 is lifted up as shown in Figure 1b.
is tilted forward by the action of the bars 11,1 of the link mechanism. Therefore, the seat 2 that moves upwards lifts the seated person's buttocks, and the seat 2 that tilts forward pushes the seated person's buttocks closer to the standing position. . Furthermore, as the seat 2 leans forward, its front end upper surface moves forward by the dimension H in Fig. It becomes a state. In this state, you can stand up by simply stretching your knees a little, but if you continue as shown in Figure 1b, if you straighten your knees and straighten them, the back of your knees will hit the top of the front end of the seat 2, which is moving forward.
The patient is unable to straighten his or her knees, which hinders his or her ability to stand up. Therefore, in the present invention, when the seat 2 is raised to the state shown in FIG.
The operation of the electric motor 4 is stopped and the moving drive device 18 is activated. and mobile drive device 1
The link device 1 is connected to the plunger rod 20 by retracting the plunger rod 20 by the operation of the link device 8.
Move 7 back. When the link device 17 is moved backward in this way, the seat 2 attached to the link device 17 is also moved backward, and the seat 2 is placed behind the back of the knees with the knees stretched as shown in Fig. 1c.
The upper surface of the front end of the front end of the knee is positioned so that there is no hindrance to the movement of stretching the knees and standing up. In this way, the user can easily stand up from the seat 2 using the push-up force of the seat 2.

Next, to sit on the seat 2, stand in front of the chair in the state shown in FIG. Link device 1
Move forward with 7. When the seat 2 moves forward in this manner, the back side of the knee is pushed by the upper surface of the front end of the seat 2, the knee is bent forward, and the buttocks are placed on the upper surface of the seat 2. When the state returns to the state shown in FIG. 1b, the moving drive device 18 is stopped by the action of the control device 19, and the electric motor 4 is rotated in the opposite direction. Then, the threaded rod 13 is rotationally driven in the direction of spiraling into the threaded cylinder 14, the threaded cylinder 14 retreats, and the seat 2 is lowered.Furthermore, with this lowering, the bars 11, 11 of the link mechanism section are moved. As a result, the seat 2 returns from the forward tilted state to the horizontal state shown in FIG. 1a. In this way, the user can sit with his buttocks resting on the seat 2 and his weight leaning toward the seat 2.

The drive device 3 in the above embodiment is shown as the drive device 3 for moving the seat 2 forward while lifting and tilting the seat 2 forward, and then moving the seat 2 backward. is not limited to the structure described above, and various mechanistically conceivable structures can be adopted.

[Effects of the invention] As described above, in the present invention, the link device is provided on the board to move the seat forward while lifting the seat and tilting it forward. By tilting the chair, you can lift your buttocks on the seat when getting up from the chair, which reduces the burden on the knees of elderly people and people with physical disabilities, and allows them to stand up more easily. By moving the seat forward when the seat is lifted and tilted forward by a link device, the knees can be in a forward-leaning state, which is the initial state when standing up from a chair, and a smooth rising motion can be achieved. In addition, the board on which the seat is attached is placed on a seat support base so as to be movable back and forth, and the seat support base is provided with a moving drive device that moves the board backwards after the seat has been moved forward. , the seat is lifted and tilted forward using the link device, the seat is moved forward, and then the seat support is moved rearward using the moving drive device. The seat can be moved rearward while standing up, and when the user stretches his/her knees when standing up, the rear side of the knees can be prevented from hitting the receding seat, thereby causing no hindrance to the movement of standing up.

[Brief explanation of the drawing]

FIGS. 1a, b, and c are front views showing the chair in use according to an embodiment of the present invention, and FIG. 2 is a front view of the same chair. 1 is a seat support, 2 is a seat, 3 is a drive device, 5
17 is a link device, and 18 is a moving drive device.

Claims (1)

[Scope of utility model registration request] A board on which a seat is mounted is arranged on a seat support base so as to be movable back and forth, and a link device is provided on the board to move the seat forward while lifting and tilting the seat forward. A chair in which a seat support is provided with a moving drive device for moving the seat backwards.