JP2010158284A - Seat surface moving chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely sit in a chair and stand up from the chair at ease without putting burdens on the lower body. <P>SOLUTION: In the chair whose seat surface 11 is turned forward by a spring 14a, the raised state of a backrest 13 is maintained at all times by a linking mechanism including a freely turnably connected armrest 12 and the seat surface 11, even while the seat surface 11 is turned, and the lower back and the back of a user can be put on the backrest 13 during movement when sitting on the chair and when standing up from the chair. In such a manner, the user is not put in an uneasy state, and the user can sit down and the stand up safely and at ease. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seat-surface moving chair that can be safely and safely seated or stood up without imposing a burden on the legs and hips.

  For example, Patent Document 1 discloses a chair that allows a person who has a weakened leg or a weak person to sit or stand up without placing a burden on the knee joint.

As shown in FIG. 9, this chair is obtained by attaching a U-shaped spring 4 between a lower plate 2 and a seat surface 3 constituting a seat 1 of the chair, and the U-shaped spring 4 is attached. The seat surface 3 is configured to be locked to the lower plate 2 by a stopper 5 using a hook.
In such a chair, when the stopper 5 is released in the sitting state, the seat surface 3 is urged by the reaction force of the U-shaped spring 4 and jumps up in an arc as shown by the broken line in the figure (up to 45 degrees). ). Therefore, a person sitting on a chair can stand up with the reaction force of the U-shaped spring without placing an unnecessary burden on the knee if the armrest is put in place with both hands.
On the other hand, in the case of sitting, the raised seat surface 3 is inclined at 45 degrees. Therefore, if sitting from that state, the impact at the time of sitting can be mitigated by the reaction force of the spring 4.
Since the seating surface 3 assists in this way, it is possible to sit or stand up without placing a burden on the knee joint.

Utility Model Registration No. 3022144

However, in the above, the seat is bent and the hips are applied to the seat plate that has jumped up, and the weight is gradually moved to the seat surface to sit down. At that time, the waist and back that are moving are not supported anywhere and cannot be deposited anywhere, so they are placed in an uneasy state. Therefore, unintentionally, he will sit down with a “dosun” asshole. In particular, those who have weakened or weak legs cannot move their weight well, so it is thought that anxiety is strong and it is difficult to sit down.
Also, when standing up from this chair, when the waist is pushed by the seat and the waist is lifted, the waist and back are not supported anywhere and can not be left anywhere, so those with weakened legs or weak There is a problem that people still feel uneasy.

  SUMMARY OF THE INVENTION An object of the present invention is to make it possible to sit and stand up safely and safely without placing a burden on the legs and legs.

  In order to solve the above-described problems, in the present invention, the front surface is pivotably attached to the front of the seating portion, and the rear portion is pivotally connected to the lower portion of the backrest so that the seating surface is placed on the seating portion. And an armrest with one end pivotally attached to the support columns provided on both sides of the seating portion and the other end pivotably connected above the backrest, and the seating surface pivoted to the front side of the seating portion. It is composed of an elastic member that urges the seat so that the backrest stands while the seat is rotating.

  By adopting such a configuration, the backrest can always be kept in an upright state by a link mechanism constituted by an armrest and a seat surface that are rotatably connected. Therefore, when you sit down, put your hips on the seat that has been bent and bounced, for example, if you put your hands on the armrests and gradually move your weight to the seat, the standing backrest touches your waist and back. Because it supports, you can sit safely without burdening your legs. At this time, the impact at the time of sitting relaxes the elastic member and assists in sitting. Therefore, you can sit naturally. On the other hand, when standing up from a chair, when the hips are lifted, they are pushed up to the seating surface, and at the same time, the standing backrest supports the hips and back, so you can stand up without worrying about your legs and hips. it can. In this way, when sitting and standing up, the moving hips and back are entrusted to the backrest, so that you can sit and stand up safely and safely without being in an uneasy state.

  Further, at this time, it is possible to adopt a configuration provided with a stopper mechanism that engages with the seating surface or the backrest and stops the seating surface on the seating portion.

  By adopting such a configuration, the stopper mechanism is engaged with the seating surface or the backrest when the chair is not used, and fixes the seating surface to the seating portion. By doing so, it can be treated as a normal chair. Further, the stopper mechanism can be used during the sitting, and the seating surface is fixed to the seating portion, so that the seated user can be prevented from receiving a pressing force to rise.

  Further, at this time, it is possible to employ a configuration provided with a buffer mechanism for restricting the rotation of the seat surface.

  By adopting such a configuration, the rotational speed of the seat is slowed down so that seating on the seat and standing up from the seat can be gently supported.

  Further, at this time, a wheelchair configuration including the seat surface, the armrest, and the elastic member, and including either one or both of the stopper mechanism and the buffer mechanism can be employed.

  By adopting such a configuration, when sitting on the wheelchair or getting off the wheelchair, the waist and back in motion can be left in the backrest, so it will not be placed in an anxious state and it will be handicapped People can use it safely and with peace of mind.

  Since the present invention is configured as described above, it is possible to sit and stand up safely and safely without placing a burden on the legs and hips.

Perspective view of an embodiment Side view of the embodiment AA 'sectional view of FIG. (A) Action explanatory drawing of embodiment, (b) The principal part expanded sectional view of Fig.4 (a) Action explanatory diagram of the embodiment (A) Side view of Example 1, (b) Action explanatory diagram of FIG. 6 (a) (A) Side view showing another embodiment of the first embodiment, (b) Operation explanatory diagram of FIG. Side view of Example 2 Action explanatory diagram of conventional example

  The best mode for carrying out the present invention will be described below with reference to the drawings. As shown in FIG. 1, the seat surface moving chair of this form includes a seating portion 10, a seat surface 11, an armrest 12, a backrest 13, an elastic member 14, and a stopper mechanism 15.

As shown in FIG. 1, the seating portion 10 is a portion on which the seating surface 11 is placed. In this embodiment, a frame constituting the leg portion 16 is used.
In other words, in this embodiment, the leg portion 16 has a total of four legs 16a, b, two at the front and at the rear, and the crosspieces 17a-c between the front legs 16a and the rear legs 16b and between the rear legs 16b. It has a combined frame structure. For this reason, as shown in the figure, the seating portion is formed by using the cross rails 17a to 17c. In addition, the code | symbol 18 in a figure is a spacer for making the seat surface 11 horizontal.

The seat surface 11 is obtained by passing the seat plate 11c to the two rods 11a and 11b, and the interval between the two rods 11a and 11b (in this embodiment, the width of the seat plate 11c) is the width of the frame of the seat portion 10. The rods 11a and 11b are placed on the frame in the same manner as in FIG.
Shafts 20a and 20b are attached to both ends of the rods 11a and 11b. The shafts 20a and 20b at the both ends protrude from the front (end) shaft 20a of the seating surface 11 to the outside and the rear (end) shaft 20b protrudes to the inside, respectively. It comes to be connected. Therefore, the seat portion 10 and the backrest 13 are provided with bearing portions 21a, 21b for supporting the shafts 20a, 20b.
That is, the bearing portion 21a of the seating portion 10 is a metal plate provided with a hole so that the shaft 20a is fitted therein. For example, a sintered oil-impregnated bearing (oilless bearing) or the like is fitted into the hole. In this case, the rotation can be performed smoothly. As shown in FIG. 1, the bearing portion 21a is attached to the side surface of the frame (crosspieces 17a, b) in front of the seating portion so that the bearing portions 21a, 21b do not bite into the frame (crosspieces 17a, b). By doing so, the rod of the seating surface 11 can be placed on the frame (the crosspieces 17a, 17b) in a state where the seating surface 11 is rotatably connected.
On the other hand, the bearing portion 21b of the backrest is provided with a hole below the backrest 13 so as to fit the shaft 20b.

Here, the backrest 13 is obtained by passing a backrest plate member between two rod members. The width of the backrest 13 is slightly narrower than the width of the seating portion 10, and the backrest 13 is placed inside the frame of the seating portion 10. It fits. By doing so, the rods 11a, b of the seating surface 11 can be placed on the frame (the crosspieces 17a, b) in a state where the seating surface is rotatably connected.
Further, in this embodiment, a hole is provided in the middle of the back member 13 of the backrest 13 so that the armrest 12 is rotatably connected.

As shown in FIG. 1, the armrest is provided with shafts 22a and 22b at both ends of the square pole, and the other end 22b provided with the shafts 22a and 22b is fitted into the hole above the backrest 13 and attached. It is. At this time, for example, a sintered oil-impregnated bearing is fitted into the hole so as to be freely rotatable.
On the other hand, the shaft 22a at one end of the armrest 12 is connected to the pillars 23 provided on both sides of the seating portion.

In this embodiment, the support post 23 is formed by extending the front leg 16a upward. The support 23 is bent inward to form an L shape, and a bearing portion 21a is formed outside the L-shaped portion. This bearing portion 21a is provided with a hole in the same manner as the previous one, and is rotatable by inserting, for example, a sintered oil-impregnated bearing.
At this time, in this embodiment, since the bearing portion 21a is provided on the outside of the L shape, the armrest 12 and the backrest 13 are connected to each other by fitting the shaft via the spacer 24 and adjusting the dimensions when attaching to the column 23. It is supposed to do. In this way, by projecting the armrest 12, collision with the rods 11a and 11b of the seating surface 11 is avoided.
In this embodiment, the support post 23 is provided by extending the front leg 16a, but is not limited thereto. Instead of extending the front legs 16a, the front legs 16a may be formed on the frames (crosspieces 17a, b) on both sides of the seating portion 10. At this time, if the formed support column 23 collides with the rods 11a, b of the seating surface 11, the support column 23 is provided so as to protrude on the outer side surface of the frame (the crosspieces 17a, b), so that it can be avoided. Good. Of course, the length of the armrest 12 is also adjusted accordingly.

In this embodiment, the elastic member 14 uses a kick spring (coil spring) 14a. The kick spring 14a is built in the rod 11a of the seating surface 11 as shown in FIG. 3 (cross section AA ′ in FIG. 2). It is mounted on the shaft 20a of the rod 11a (only one is shown in FIG. 3, but it is provided on both sides). Therefore, the seat surface 11 is urged by the spring 14a so as to rotate to the front side of the seating portion 10.
In this embodiment, the kick spring 14a is shown as the elastic member 14, but the elastic member 14 is not limited to this. Other than this, for example, a member exhibiting elasticity such as rubber, elastic resin, and air cylinder can be used.

The movable chair is provided with a stopper mechanism 15. The stopper mechanism 15 uses a hook 25 as shown in FIG.
That is, the hook 25 is attached to the side portion of the seating portion 10 and is urged by the coil spring 26 and engaged with the pin 27 provided on the rod 11a of the seating surface 11 as shown in FIG. . The hook 25 is connected to a support 28 (front leg) 23 via a link mechanism 29 and a lever 28 rotatably attached.
Therefore, in this stopper mechanism 15, when the seat surface 11 is lowered as shown by the broken line in FIG. 4A, the pin 27 of the rod 11 a rotates by pushing the head of the hook 25. Further, when the seat surface 11 rotates and the rod 11a of the seat surface 11 is placed on the frame 17a, the hook 25 is urged by the spring 26 and rotates as shown by the solid line in FIG. Engages (fits) the pin 27 of 11a.
On the other hand, to release the stopper mechanism 15, the lever 28 is moved inward (pulled forward while sitting down). Then, the link mechanism 29 is actuated as shown by the arrow in FIG. 4A, and the hook 25 is rotated, so that the engagement with the pin 27 can be released.
At this time, the hook 25 can be kept in the operating state by the spring 26 even if the lever 28 is released.

  This configuration is configured as described above. For example, when the chair is not in use, the seat 25 is mounted on the seat portion 10 with the hook 25 engaged with the pin 27 as shown in FIG. Keep it in place.

In use, the lever 28 is moved forward to release the stopper mechanism 15. Then, the seat surface 11 is pushed and rotated by the kick spring (elastic member) 14a, and as shown in FIG. 5, the seat surface 11 is raised by, for example, about 50 ° (this angle is appropriately determined depending on the form of the chair and use conditions). become. At this time, the backrest 13 is always kept upright by a link mechanism composed of the armrest 12 and the seat surface 11 (for example, the length of the armrest 12 and the length of the rods 11a, b of the seat surface 11). The height is adjusted so as to maintain the standing state.Of course, it is necessary to consider the mounting position of the members 11 and 12 on the backrest 13).
Therefore, when the hips are bent and the hips are raised and the hands are put on the armrests 12 and the weight is gradually moved to the seating surface 11, the standing backrest 13 hits the waist and back and supports the waist and back. . On the other hand, the seat surface 11 is supported by the reaction force of the spring 14a and assists in sitting. Therefore, it is possible to sit in a natural state without imposing a burden on the legs.
At this time, as shown in FIG. 4A, the hook 25 is pushed and rotated by the pin 27 and engages with the pin 27 simultaneously with the seating to fix the seating surface 11. As a result, no pressing force is applied by the kick spring (elastic member) 14a, so that the seat can be seated stably. Moreover, since the seating surface 11 is fixed, it is possible to continue sitting.

  On the other hand, when standing up, the lever 28 of the stopper mechanism 15 is pushed (outward) to be released. Then, when the user stands up with his / her hips lifted, the seat surface 11 is pushed by the kick spring (elastic member) 14a and simultaneously stands up. At the same time, since the back and back are supported by the standing backrest 13, the user can stand up without placing a burden on the legs and hips.

  In this way, since the moving waist and back are entrusted to the backrest, they are not put in an uneasy state, and can sit and stand up safely and securely.

In the first embodiment, as shown in FIGS. 6 and 7, a buffer mechanism (shock absorber) 30 is provided.
6 (a) and 6 (b) uses an air cylinder 30a as the buffer mechanism 30, and the air cylinder 30a is a link having two joints as shown in FIGS. 6 (a) and 6 (b). The mechanism 31 is used to regulate the rotation of the seat surface 11. By using the air cylinder 30a in this way, the rotational speed of the seat surface 11 can be made slower than that of the spring 14a alone. Therefore, it is possible to sit and stand up safely and safely.
Since other configurations and operational effects are the same as those of the embodiment, the same reference numerals are given and descriptions thereof are omitted.

On the other hand, the thing of Fig.7 (a), (b) uses the gear 30b and the rail 30c for the buffer mechanism 30. FIG.
That is, the seat 30 is provided with a gear 30 b and a fan-shaped rail 30 c that meshes with the gear 30 b is attached to the seat surface 11. At this time, a load for regulating the rotation of the gear 30b, such as a brake shoe, is attached to the gear 30b. By doing so, the rotational speed of the seating surface 11 is slowed down so that the user can easily sit on the seat and stand up from the seat.
Since other configurations and operational effects are the same as those of the embodiment, the same reference numerals are given and descriptions thereof are omitted.

The second embodiment shows a wheelchair provided with the seating surface 11, the armrest 13, the backrest 13, and the elastic member 14. In this wheelchair, the stopper mechanism 15 or the buffer mechanism 30 is not described, but it is natural that the stopper mechanism 15 and the buffer mechanism 30 are provided.
In this wheelchair, when sitting on the wheelchair or when getting off the wheelchair, the waist and back in motion are left behind, so there is no rest. Therefore, in particular, people with physical disabilities can use it safely and with peace of mind.
In addition, since it is the same as that of the actual thing form about a structure and effect other than the part of a wheel, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

DESCRIPTION OF SYMBOLS 10 Seating part 11 Seat surface 12 Armrest 13 Back 14 Elastic member 14a Kick spring 15 Stopper mechanism 17a-c Crosspiece 21a, b Bearing part 22a, b Shaft 23 Strut 29 Link mechanism 30 Buffer mechanism 30a Air cylinder 30b Gear 30c Rail

Claims (4)

A front surface that is pivotally attached to the front of the seating portion and a rear portion that is pivotally connected to the lower portion of the backrest, and a seating surface placed on the seating portion;
An armrest with one end pivotally attached to the column portions provided on both sides of the seating portion and the other end pivotally connected above the back;
An elastic member that urges the seating surface to rotate to the front side of the seating portion;
A seat surface moving chair in which the backrest stands up during rotation of the seat surface.   The seat surface moving chair according to claim 1, further comprising a stopper mechanism that engages with the seat surface or the backrest and stops the seat surface on the seating portion.   The seat surface moving chair according to claim 1 or 2, further comprising a buffer mechanism for restricting rotation of the seat surface. A front surface that is pivotally attached to the front of the seating portion and a rear portion that is pivotally connected to the lower portion of the backrest, and a seating surface placed on the seating portion;
An armrest with one end pivotally attached to the column portions provided on both sides of the seating portion and the other end pivotally connected above the back;
The wheelchair is composed of an elastic member that urges the seating surface to rotate to the front side of the seating part, and the backrest stands up during the rotation of the seating surface.
A seat surface moving chair provided with either or both of a stopper mechanism that engages with the seat surface or the backrest and stops the seat surface on a seating portion and a buffer mechanism that restricts rotation of the seat surface.

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