JP2001008773A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which combines the rotating motion of a seat part and forward and backward sliding movement motion in order to ease the action that a physically handicapped old man, physically handicapped person or child to seat and erect in front of a table or desk and which ensures the stable operation thereof and prevents the inadvertent movement of the entire part of the chair. SOLUTION: A base body is turnably mounted at the top end of an immovable leg 1 which is made immovable with respect to a floor surface in at least a use state and a seat part 4 disposed in the upper part of the base body is mounted at the base body sldingly movably back and forth relative to the base body. Moving legs 5 provided with rolling rings 8 at their bottom ends are installed under the front of the seat part and are so set that the rolling rings roll on the floor surface at all times. The seat part is supported by these moving legs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair for facilitating the movement of an elderly or physically handicapped person or a child with a physical disability sitting and standing in front of a table or desk. Related to a chair that rotates and moves back and forth stably.

[0002]

2. Description of the Related Art Heretofore, a swivel chair in which a seat is rotatably provided in a horizontal plane on a stanchion erected at a central portion of a radially extending support leg or a disc-shaped grounding plate is very common. It is also known that a caster is attached to the tip of each of the supporting legs so as to be movable. On the other hand, a wooden or pipe chair (hereinafter referred to as a "normal chair") of a type in which four legs are provided from the lower surface of the seat portion and the legs are directly grounded to the floor surface is also very common.

[0003] Usually, the ordinary chair is set on a dining table. When sitting, the chair is pulled backward and the user sits away from the table, and then moves the chair a little while moving his / her weight forward. Pull to move closer to the table. This action, which is nothing for a healthy person, is often difficult for elderly people with physical disabilities, for the physically handicapped, or for children whose feet do not reach the floor. Caregivers and adults need to assist in moving the chair. . Also, when standing up from a state of sitting at a predetermined position on the table, assistance is required similarly.

[0004] However, as long as the body can move to some extent, it is important not only to do the minimum necessary to promote independence and also to suppress the recovery and progress of the medical condition, but also to provide nursing care. It is also demanded in reducing human labor. For this reason, casters and rollers may be provided at the lower ends of the legs of the ordinary chair so that the chair can be moved so that even an elderly or physically handicapped person can move the chair back and forth with a small force. When standing up with the edge of the table sometimes, the chair moves backward with the extension of the legs, and when you try to sit again, the seat part is separated, and it may fall down, which is very dangerous . In addition, when using the swivel chair, a method of rotating the seat and sitting sideways, and then rotating the seat forward to sit on the front of the table is also considered. There is a large space between the table and the edge of the table, and it is necessary to move the swivel chair closer to the table, which has the same problem as described above.

Incidentally, Japanese Patent Application Laid-Open No. 7-2222638 discloses that
At the upper end of the column vertically established from the floor, the seat of the chair body is supported so as to be rotatable in a horizontal plane, and the seat is urged to always face the front when there is no load, There is also disclosed a rotary slide chair in which a seat can be slid forward and backward, and the seat is biased so as to be displaced forward. However, the rotating slide chair described in this publication can be stably slid and moved only in a structure in which the columns are completely fixed to the floor surface,
In other words, even if the center of gravity is greatly displaced from the support during the sliding movement of the seat, the support is stabilized because the support is fixed to the floor surface.

[0006]

SUMMARY OF THE INVENTION In view of the above situation, the present invention seeks to solve the above problem. An elderly person, a physically handicapped person or a child with a physical disability sits in front of a table or desk and stands up. In order to facilitate the operation, the present invention provides a chair in which the rotational movement of the seat and the sliding movement in the front-rear direction are combined, and the chair operates stably and the whole chair does not unexpectedly move.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a base member is rotatably mounted on an upper end of an immovable leg which is immovable with respect to a floor at least in a use state. A seat disposed above the body is attached to the base so as to be slidable back and forth, and a movable leg provided with a rolling wheel at the lower end is provided below the front of the seat, so that the rolling wheel is always on the floor surface. The chair was set so that it rolled on the upper side, and the movable leg supported the seat.

More specifically, the seat is mounted on the base so as to be slidable in the front-rear direction via a mounting frame provided in the center with a movement space for receiving the base. Are guided by rolling guides provided by guide rails provided on both sides in the moving space of the mounting frame.

Here, locking means for suppressing movement at the end of movement of the seat portion may be provided at the front and rear portions of the mounting frame in the moving space and the front and rear portions of the base body. Rotational positioning means for suppressing rotation of the seat portion may be provided between the immovable leg and the base body in a state where the seat portion faces forward, a state where the seat portion is rotated by 90 degrees, and an intermediate state as appropriate. preferable.

Further, when the movable legs are provided on both sides of the front portion of the seat, the rotation of the seat and the movement of the seat back and forth are extremely stabilized. In addition, it is preferable that the rolling wheel is a caster because the direction of operation can be easily changed when the seat rotates and moves back and forth.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows a typical embodiment of a chair of the present invention, and FIGS. 2 to 8 show details thereof, wherein reference numeral 1 denotes a stationary leg, 2 denotes a base body, 3 denotes a mounting frame,
4 denotes a seat, 5 denotes a movable leg, 6 denotes a backrest, and 7 denotes an armrest.

In the chair according to the present invention, a base member 2 is rotatably mounted on an upper end of a fixed leg 1 which is immovable with respect to a floor at least in a use state, and a seat portion disposed above the base member 2. 4 is attached to the base body 2 so as to be slidable back and forth, and a movable leg 5 provided with a rolling wheel 8 at a lower end is provided below a front portion of the seat portion 4 so that the rolling wheel 8 always moves on the floor surface. It has a basic structure in which it is set to roll and the movable leg 5 supports the seat 4.

Here, the seat 4 is mounted on the base 2 via a mounting frame 3 so as to be slidable back and forth.
Specifically, the mounting frame 3 is a frame body provided with a moving space 9 for receiving the base body 2 at the center, and includes four rollers 10 provided on the front, rear, left and right sides of the base body 2. ,
Rolling guides are provided by guide rails 11 provided on both sides of the mounting frame 3 in the moving space 9. In the present embodiment, two movable legs 5 are provided on both sides of the front portion of the seat portion 4, and the rolling direction of the rolling portion 8 provided at the lower end of the movable leg 5 when the seat portion 4 rotates and moves back and forth. Uses casters that can be turned easily.

Further, it is preferable that locking means 12, 12 for suppressing movement at the end of movement of the seat portion 4 are provided at the front and rear portions of the mounting frame 3 in the moving space 9 and the front and rear portions of the base body 2. . Here, as the locking means 12, an appropriate means can be adopted as long as it has a structure that gives a resistance to the movement of the seat 4. In the present embodiment, the tip is attached to one of the mounting frame 3 and the base body 2. An inflated protrusion 12a is provided, and the
In the above, an example is shown in which a catcher 12b is provided to receive and resiliently clamp, that is, an example in which a ball catcher is provided. However, the present invention is not limited to this example, and it is possible to provide a magnet catcher or use a locking means that is completely immovable by a latch.

The rotation positioning means 13 for suppressing the rotation of the seat 4 in a state in which the seat 4 faces forward with respect to the immovable leg 1, a state in which the seat 4 is rotated by 90 degrees, and an intermediate state as appropriate. Is provided between the stationary leg 1 and the base body 2. Here, as the rotation positioning means 13, the ball plunger 13 a arranged upwardly is provided on the upper end of the fixed leg 1, and is located on the lower surface of the base body 2 and on the circumference with respect to the rotation center of the seat 4. An example in which a plurality of recesses or small holes 13b for engaging the ball plunger 13a are provided. For example, first small holes 13b,... For engaging the ball plunger 13a with the seat portion 4 facing directly in front are provided, and the second small holes 13b are rotated 90 degrees from the first small holes 13b,. Are provided, and third small holes 13b,... Are provided in the middle thereof as necessary.

The present embodiment will be described in more detail. First,
The immovable leg 1 does not easily move with respect to the floor surface when used to sit on a chair, and has a sufficiently large contact area so as to be able to stably support the chair by itself, or the contact portion occupies. The structure is not particularly limited as long as it has a large area. However, in the present embodiment, an example in which the pillar 15 is erected at the center of the disc-shaped ground plate 14 is illustrated. In the present embodiment, three or more adjusters 16 are provided around the lower surface of the ground plate 14. Then, the base body 2 is rotatably connected to the upper end of the pillar 15 via a rotary connecting member 17. The rotating shaft 17 is rotatably fitted on the upper end of the hollow pipe-shaped pillar 15.
8 and a connecting plate 1 for fixing to the lower surface of the base body 2
The rotating shaft 18 is rotatably connected to the pillar 15 in a rotatable and non-removable state, and the connecting plate 19 is fixedly screwed to a lower surface of the base body 2. Since the base 2 is integrated with the connecting plate 19 of the rotary connecting tool 17, it is not necessary to distinguish it. Therefore, in the present embodiment, the ball plunger 13a is fixed upward to the flange plate 20 fixed to the upper end of the pillar 15, and the connection plate 1
9 are formed with small holes 13b.

As shown in FIGS. 2 and 3, the mounting frame 3 has a frame structure in the present embodiment, and has a moving space 9 for the base body 2 formed at the center thereof. An attachment body 21 having guide rails 11 and 11 formed on both sides is attached. The mounting body 21 is formed by bending a steel plate, and the rail portion 2 is formed by stepping down both side portions of a closing plate 22 large enough to cover the moving space 9.
3 and 23, and a cover portion 24 having a substantially U-shaped cross section which is open inward continuously to the rail portion 23 is formed, and the roller 10 rolls on the rail portion 23 and the cover portion 24 Protected in a retaining state. The movable legs 5, 5 are provided on both sides of the front portion of the mounting frame 3.
Is installed below.

Then, as shown in FIG. 3, FIG. 5, and FIG. 6, the base body 2 forms side plates 26, 26 by raising both side edges of a substrate 25 for fixing the rotary connecting member 17,
The shafts 27 are rotatably provided at the front and rear portions of the side plate 26, and the rollers 10,... Are attached to the ends thereof. , That is, the mounting frame 3 and the seat portion 4 are slidable back and forth with respect to the base body 2 mounted on the stationary leg 1.

In the chair according to the present invention, the mounting frame 3
The seat 4 is attached to the upper part of the seat 4, the backrest 6 is provided upright at the rear of the seat 4, and the armrest 7 is attached across the seat 4 and the backrest 6. The fixed leg 1, the base 2, the mounting frame 3, and the movable leg 5 are used as basic common components to reduce costs, and the seat 4, the backrest 6, and the armrest 7 are designed by changing. And chairs of various designs.

In the present embodiment, the armrest 7 is provided with the seat 4.
The armrest 7 has a structure in which the height can be adjusted, or the front part is displaced up and down around a portion connected to the backrest part 6. It is also preferable to use a structure in which the angle can be adjusted by adjusting the angle, or a structure in which the structure can be slid forward or backward in order to support the hand when standing up from a seated state, and a composite structure combining these structures. You can also.
Further, the seat portion 4 is for stabilizing a seated state,
In order to prevent the seated person's buttocks and the seat surface from slipping when the seat portion 4 is moved forward, a bulging portion 28 bulging upward is provided at a front portion of the seat surface.

The operation of the thus constructed chair of the present invention will be described with reference to FIGS. First, in the initial state in which the seat 4 is located at the rear end, the protrusions 1 of the locking means 12 provided at the front of the mounting frame 3 and the front of the base 2 respectively.
2a and the catcher 12b are elastically engaged to loosely restrain the state. When the occupant or the caregiver moves the seat 4 forward from this initial state, the locking means 12 at the front part is disengaged, and the guide rails 11, 11 move on the rollers 10,. The mounting frame 3, that is, the seat portion 4 slides forward with respect to the body 2. At this time, since the rolling wheels 8, 8 of the movable legs 5, 5 always roll on the floor surface, even if the seat portion 4 and the center of gravity of the seated person are shifted forward with respect to the pillar 15, it is stably supported. It is possible to In a sliding displacement state in which the seat portion 4 is located at the front end, the projections 12a of the locking means 12 provided on the rear portion of the mounting frame 3 and the rear portion of the base body 2 are elastically engaged with the catchers 12b. And the state is loosely restrained.

As shown in FIG. 8, in the initial state (see FIG. 8 (a)) in which the seat 4 is located at the rear end, it is possible to rotate the left and right about the pillar 15 of the fixed leg 1 as a center. It is possible. FIG. 8 (b) shows a state rotated 90 degrees clockwise, and FIG. 8 (c) shows a state rotated 90 degrees counterclockwise. In each rotation state, the ball plunger 13a constituting the rotation positioning means 13 is engaged with the corresponding small hole 13b to loosely restrain the state.
At this time, since the rolling wheels 8, 8 of the movable legs 5, 5 always roll on the floor surface, it is possible to stably support the seat 4 regardless of how the seat portion 4 rotates with respect to the pillar 15. It is possible. still,
The rotation of the seat 4 is possible even in the sliding displacement state in which the seat 4 is located at the front end.

The chair shown in FIG. 9 has a handlebar 2 behind the backrest 6 so that the caregiver can easily slide and rotate the seat 4 forward and backward.
9 is installed horizontally. Specifically, the rear part of the armrests 7, 7 is extended rearward, and a rod is provided between the ends to form the handlebar 29. Accordingly, it is easy for the caregiver to apply force when sliding and rotating the seat portion 4 back and forth while holding the handle rod 29. Also, when moving the chair according to the present invention, the rear part of the chair is lifted with the handle rod 29 to lift the immovable leg 1 from the floor,
If only the rolling wheels 8, 8 of the movable legs 5, 5 are in contact with the floor, the chair can be easily moved even if the chair is heavy.

Further, the chair shown in FIGS. 10 to 13 is still another embodiment, and only the configuration different from the chair will be briefly described. Other configurations are the same as those described above, and therefore, the same configurations are denoted by the same reference numerals and description thereof will be omitted. First, the chair shown in FIG. 10 has one movable leg 5 provided in the seat 4, that is, in the center of the front part of the mounting frame 3. In this case, it is assumed that the stationary leg 1 itself has sufficient stability. Next, in the chair shown in FIG. 11, when only one movable leg 5 shown in FIG.
The rolling wheels 8 are attached to both ends of the horizontal rod 31. The chair shown in FIG. 12 has a structure in which a box body 32 is adopted as the immovable leg 1, and the base body 2 is rotatably connected to the upper surface of the box body 32. A drawer 33 is provided on at least one side so as to be able to be pulled out, so that when the chair is used for a meal such as a napkin or for other purposes, equipment according to the purpose can be stored. A caster 34 is provided on the lower surface of the box body 32 so that the caster 34 can protrude and retract so that the caster 34 can be easily moved by moving the chair when the chair moves, and the caster 34 is pulled into the box body 32 when the chair is seated. Is immovable. The chair shown in FIG. 13 is obtained by modifying the shape of the seat 4 of the chair shown in FIG. By forming and positioning the feet of the occupant on both sides of the protrusion 35, the occupant is prevented from falling down, and the occupant pushes the seat 4 laterally with the knee when the occupant turns the chair. Have to be able to.

Next, the chair shown in FIGS. 14 to 16 has a structure in which a caregiver can push and move the chair while sitting on the seat 4, that is, to walk around an indoor or outdoor neighborhood as a wheelchair. You can do it. In the chair of the present embodiment, a pair of wheels 36, 36 are fixedly mounted on both sides of a rear portion of the mounting frame 3 with a support frame 37, and the immovable leg 1 is provided between the wheels 36, 36 so as to be able to move up and down. 3 is provided with a movable leg 5 at the front part in the same manner as described above.
Here, the fixed leg 1 is configured to move up and down by stepping on a petal 38. When moving the chair itself, the fixed leg 1 is raised and the wheels 36, 36 are moved.
Ground, and can move freely with the movable leg 5 at the front. When sitting at a table or a desk, the immovable leg 1 is lowered and the wheels 3
Float the 6,36 from the floor and regulate the movement of the chair. Of course, also in the chair of the present embodiment, the seat 4 can be rotated around the fixed leg 1 with the fixed leg 1 grounded, and the rolling wheel 8 of the movable leg 5 can swing in all directions. And casters. In the present embodiment, the movable leg 5 has an inverted triangular shape when viewed from the front and has strength, and one rolling wheel 8 is provided on the top thereof to constitute a tricycle when moving. The legs 5 can be of various forms.

FIG. 17 shows an electric motorized means for moving the seat 4 forward and backward. Pinions 39,... 40 are rotated by an electric motor 42 via a transmission means 41 comprising a belt and a pulley, and racks 43 provided on both sides of the moving space 9 of the mounting frame 3 instead of the guide rails are engaged with the pinions 39,. Let
Thus, the mounting frame 3, that is, the seat portion 4 is slid forward and backward by the electric motor 42.

As described above, the chair according to the present invention has the seat 4
Slides back and forth and rotates, so when sitting on the chair arranged close to the front of the table, first rotate the seat 4 by 90 degrees in the initial state of the rear end, and With the body turned sideways, an elderly person or a physically handicapped person accompanied by a caregiver, or a physically handicapped elderly person or a physically handicapped person or a child who can walk without assistance is seated on the seat 4. Then, after the seat 4 is rotated 90 degrees to face the front, the seat 4 is slid forward to reduce the gap between the seated person and the front edge of the table. By doing so, it is possible not only to reduce the possibility of dropping foods and articles on the floor surface during work on the table such as a meal, but also to stabilize the sitting state. On the other hand, in the case of leaving the chair, the seat 4 is first slid backward while being seated to return to the initial state, and then the seat 4 is rotated 90 degrees and the seat 4 is turned sideways. So, you can stand up with your caregiver or on your own.

Also, the chair according to the present invention, and FIGS.
By combining with the table shown in FIG. 0, seating can be performed more stably, and foods and articles are less likely to drop on the floor during work such as meals on the table. That is, the table 44 shown in FIG. 18 is provided with an auxiliary top plate 46 that can be pulled out to the abdomen of the occupant on the lower surface of the front edge of the top plate 45. FIG.
The table 44 shown in FIG. 9 is provided with a pair of auxiliary top plates 47, 47 which can be pulled back and forth on the lower surface of the front edge of the top plate 45 so as to sandwich the occupant. The table 44 shown in FIG. 20 is provided on the lower surface of the front edge of the top plate 45.
A pair of auxiliary top plates 48, 48 are provided so as to be rotatable and pulled out so as to sandwich a seated person.

The chair of the present invention described above is not limited to the above-described embodiment, but includes the technical idea of the present invention, that is, the immovable leg 1.
And the movable leg 5, and the seat 4 can be slid forward and backward and rotatable with respect to the immobile leg 1 while the movable leg 5 is in contact with the ground, so that even a person with a physical disability can easily sit and take off. The structure and the mechanism can be changed as long as a structure is provided that can always realize a stable sitting state.

[0030]

According to the chair of the present invention constructed as described above, the base is rotatably mounted on the upper end of the immovable leg which is immovable with respect to the floor at least in use, and is disposed above the base. A seat is attached to the base so as to be slidable back and forth, and a movable leg provided with a rolling wheel at a lower end is provided at a front portion of the seat so that the rolling wheel always rolls on the floor. And the movable leg supports the seat, so that the disabled elderly, disabled, or children approach the table or desk in front of themselves or their caregiver. In this state, the user can easily sit or stand up, and the forward and backward sliding movement and rotation of the seat portion are extremely stable, and it is extremely safe even if the entire chair does not suddenly move.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a chair according to the present invention.

FIG. 2 is a partially exploded perspective view showing a relationship between a fixed leg and a mounting frame.

FIG. 3 is a partially exploded perspective view showing the relationship between the base body and the mounting frame.

FIG. 4 is a partially exploded perspective view showing a relationship between a mounting frame and a seat.

FIG. 5 is a transverse sectional view showing the relationship between the base body and the mounting frame.

FIG. 6 is a longitudinal sectional view showing the relationship among the immovable legs, the base body, and the mounting frame.

FIG. 7 is an explanatory plan view for explaining a forward and backward sliding operation of the chair according to the present invention.

FIG. 8 is an explanatory plan view for explaining a rotation operation of the chair according to the present invention.

FIG. 9 is an overall perspective view of a chair showing a first modified example.

FIG. 10 is an overall perspective view of a chair showing a second modification.

FIG. 11 is an overall perspective view of a chair showing a third modification.

FIG. 12 is an overall perspective view of a chair showing a fourth modification.

FIG. 13 is an overall perspective view of a chair showing a fifth modification.

FIG. 14 is an overall perspective view of a chair according to another embodiment.

FIG. 15 is a rear view of the chair set in the sitting mode.

FIG. 16 is a rear view of the chair set in the wheelchair mode.

FIG. 17 is a simplified perspective view showing a modified example of the mechanism for moving the seat back and forth.

FIG. 18 is a perspective view showing a mode in which a chair and a table of the present invention are used in combination.

FIG. 19 is a perspective view showing a mode in which the table is used in combination with the table of the first modified example.

FIG. 20 is a perspective view showing a mode in which the table is used in combination with the table of the second modified example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fixed leg 2 base 3 mounting frame 4 seat 5 movable leg 6 backrest 7 armrest 8 rolling wheel 9 moving space 10 roller 11 guide rail 12 locking means 13 rotation positioning means 14 ground plate 15 leg 16 adjuster 17 Rotating connector 18 Rotating shaft 19 Connecting plate 20 Flange plate 21 Mounting body 22 Closure plate 23 Rail part 24 Cover part 25 Substrate 26 Side plate 27 Shaft 28 Swelling part 29 Handlebar

Claims (6)

[Claims] 1. A base body is rotatably mounted on an upper end of an immovable leg which is immovable with respect to a floor at least in a use state, and a seat disposed above the base body is moved back and forth with respect to the base body. A movable leg provided with a rolling wheel at the lower end is provided below the front of the seat, and the rolling wheel is set so as to always roll on the floor. A chair characterized by supporting a part. 2. The seat is mounted on the base so as to be slidable back and forth through a mounting frame provided at a central portion of a movement space for receiving the base, and is provided on the front, rear, left and right sides of the base. 2. The chair according to claim 1, wherein the four rollers are rolled and guided by guide rails provided on both sides in the movement space of the mounting frame. 3. The chair according to claim 1, wherein locking means for restraining movement at the end of movement of the seat is provided at the front and rear portions of the mounting frame in the movement space and at the front and rear portions of the base body. 4. A rotation positioning means for suppressing rotation of the seat in a state in which the seat faces forward with respect to the immovable leg, a state in which the seat is rotated by 90 degrees, and a state in-between as appropriate. The chair according to any one of claims 1 to 3, which is provided between the chair and the base body. 5. The chair according to claim 1, wherein said movable leg is provided on both sides of a front portion of said seat portion. 6. The wheel according to claim 1, wherein said rolling wheel is a caster.
The chair according to any one of Items 1 to 5,