JP2023122949A - Table for wheelchair - Google Patents

Abstract

To provide a table for a wheelchair which enables a user to take a favorable sitting posture.SOLUTION: A table 1 for a wheelchair is foldable and includes a pair of right and left intersected legs 20 capable of adjusting the height of a top board 10. The table includes: the top board 10 having a nearly semi-circular recessed part 15; the pair of right and left intersected legs 20 where first leg bodies 21 and second leg bodies 26 are arranged in an X-shape and rotatably connected via connection pins 30; and a connection plate 70 arranged to be disposed over lower end parts of the right and left first leg bodies 21. The connection plate 70 has recessions 72 where foot supports of the wheelchair can pass.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair table used when sitting on a wheelchair and eating.

Many people, such as the elderly and the physically handicapped, eat while sitting on a wheelchair, and many wheelchair tables suitable for eating have been developed. Such a wheelchair table can be broadly classified into a table that is attached to a wheelchair body and a table that has legs and can stand on its own.

As a type of table attached to a wheelchair body, there is a table that uses an armrest of the wheelchair and attaches the table to the armrest (see Patent Document 1, for example). On the other hand, as a self-supporting type table having legs, there are a wheelchair table suitable for a standard wheelchair (see, for example, Patent Document 2) and a dining table with casters (see, for example, Patent Document 3).

JP 2013-111091 A Utility Model Registration No. 3213668 JP 2013-215499 A

When eating while seated in a wheelchair, poor posture makes it difficult to take in, chew, and swallow food, and it has been pointed out that the risk of aspiration increases. To prevent aspiration when eating in a wheelchair, the soles of the feet should be firmly in contact with the floor or a footrest, the thighs should be firmly in contact with the seat, the body should be firmly in contact with the backrest, and the crotch and knees should be flexed at right angles. One posture is preferred.

The positional relationship between the wheelchair and the table, specifically the height of the table, the floor or the footrest, the distance between the table and the backrest, etc., are important points for obtaining the above-mentioned preferable sitting posture. In general wheelchairs, the height of each part is basically fixed except for the foot support, so it is necessary to adjust the height etc. on the table side.

When the table is attached using armrests, it is relatively easy to adjust the distance between the table and the backrest, but it is difficult to adjust the height because the table is fixed to the armrests. On the other hand, with a self-supporting type table, it is easy to adjust the height of the table, but the legs of the table come into contact with the wheelchair, making it difficult to bring the table sufficiently close to the backrest.

Since the wheelchair table is basically not used except when eating, storability is also important, for example, it can be stored compactly. Particularly when used in facilities for the elderly, hospitals, etc., a wheelchair table that is compact and has a small storage space is preferable because of the large number of tables. It is difficult to say that the consideration of the storability of conventional wheelchair tables has been sufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wheelchair table that allows a favorable sitting posture.

The present invention is a foldable wheelchair table provided with a pair of left and right crossed legs for adjusting the height of the top plate, comprising a top plate having a substantially semicircular concave portion, a first leg and a second leg. A pair of left and right crossed legs arranged in an X shape and rotatably connected via a connecting pin; and a connecting body, wherein the first connecting body is provided with a recess through which a foot support of a wheelchair can pass.

The wheelchair table according to the present invention further comprises a height-adjustable footrest, wherein the front end of the footrest is rotatably connected to the first connecting body, and a height adjustment means is provided on the rear rear surface of the table. characterized by comprising

In the wheelchair table according to the present invention, the upper ends of the left and right first legs are rotatably attached to the back surface of the top plate rear part, and the left and right second legs are hung on the upper ends of each other. A leg angle adjusting means connected by a second connecting body attached so as to pass over, moving the second connecting body forward and backward, and varying the crossing angle of the second leg with respect to the first leg. characterized by

In the wheelchair table according to the present invention, the crossing leg is folded by moving the second connecting body to the upper end side of the first leg, and when the crossing leg is folded, the second connecting body The table is located in the concave portion of the top plate, and is configured so that the folded table can be carried using the second connecting body as a handle.

ADVANTAGE OF THE INVENTION According to this invention, the wheelchair table which can take a preferable sitting posture can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the wheelchair table 1 of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the wheelchair table 1 of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view of the wheelchair table 1 of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the wheelchair table 1 of 1st Embodiment of this invention. Fig. 2 is a bottom view of the wheelchair table 1 according to the first embodiment of the present invention in which the crossing legs 20 are folded; 1 is a side view of the wheelchair table 1 according to the first embodiment of the present invention in a state where the crossing legs 20 are folded; FIG. It is a figure which shows the state which is carrying the wheelchair table 1 with the crossing leg 20 of 1st Embodiment of this invention folded. It is a figure which shows the usage condition of the wheelchair table 1 of 1st Embodiment of this invention. It is a figure which shows the usage condition of the wheelchair table 1 of 1st Embodiment of this invention.

1, 2, 3, and 4 are a perspective view, a front view, a plan view, and a side view, respectively, of a wheelchair table 1 according to a first embodiment of the present invention. 5, 6, and 7 are a bottom view and a side view of the wheelchair table 1 according to the first embodiment of the present invention with the crossing legs 20 folded, respectively, and the wheelchair table 1 with the crossing legs 20 folded. It is a figure which shows the state which is carrying. 8 and 9 are diagrams showing the state of use of the wheelchair table 1 according to the first embodiment of the present invention.

The X-axis, Y-axis, and Z-axis in the drawings and specification correspond to the X-axis, Y-axis, and Z-axis of the three-dimensional orthogonal coordinates, and the X (X-axis) direction, Y (axis) direction, and Z (axis) The directions match the X-axis direction, Y-axis direction, and Z-axis direction of the three-dimensional orthogonal coordinates. In the specification, the +X direction means the direction of the X-axis arrow shown in the drawing, and the -X direction means the direction opposite to the X-axis arrow shown in the drawing. The same applies to the +Y direction, -Y direction, +Z direction, and -Z direction.

A wheelchair table 1 according to a first embodiment of the present invention is a foldable wheelchair table provided with a pair of left and right cross legs 20 whose height of a top plate 10 can be adjusted. 1 to 6, the +X direction is the front, the -X direction is the rear, the +Z direction is the left, the -Z direction is the right, the +Y direction is the top, and the -Y direction is the bottom. The longitudinal direction of the top plate 10 is parallel to the Z-axis, parallel to the X-axis.

The top plate 10 has a rectangular shape in a plan view, and has a substantially semicircular concave portion 15 at its rear portion (see FIG. 3). The concave portion 15 is provided so that the torso of the person 200 seated on the wheelchair 100 can be accommodated therein. The outer peripheral edge 12 of the upper surface 11 of the top plate 10 is slightly raised to prevent objects from falling. The width (Z direction) of the top plate 10 is set larger than the width of the wheelchair 100 .

The crossing leg 20 comprises a first leg 21 and a second leg 26 arranged in an X-shape through a connecting pin 30 so as to be rotatable relative to each other. The cross legs 20 are attached to the left and right sides of the top plate 10, respectively, and the top plate 10 is supported by the pair of left and right cross legs 20.例文帳に追加The left and right cross legs 20 have the same shape and structure. The space between the left and right crossing legs 20 is set larger than the width of the wheelchair 100, and the height of the crossing legs 20 is set so that the top plate 10 is higher than the arm support (armrest) 104 of the wheelchair 100. ing. Thereby, the wheelchair 100 can be put under the wheelchair table 1 (see FIG. 8).

The first leg 21 is an elongated thick plate-like member, and the lower end 22 is located on the front side and contacts the floor surface 300 . The first leg 21 has a lower end 22 and an upper end 23 that are substantially semicircular in side view, and has a through hole in the center in the longitudinal direction through which the connecting pin 30 is inserted. The upper end 23 of the first leg 21 is rotatably attached to a leg fixture 35 fixed to the back surface 13 of the top plate 10 via a connecting pin 32 . A non-slip tape (not shown) is attached to a portion of the lower end 22 of the first leg 21 that is in contact with the floor surface 300 .

The second leg 26 is an elongated thick plate-like member, and the lower end 27 is located on the rear side and contacts the floor surface 300 . The second leg 26 has a substantially semicircular lower end 27 and an upper end 28 in a side view, and has a through hole in the longitudinal center through which the connecting pin 30 is inserted. The second leg 26 is arranged inside (from the center) of the first leg 21 , and upper ends 28 of the left and right second legs 26 are connected by a connecting rod 40 . A non-slip tape (not shown) is attached to a portion of the lower end 27 of the second leg 26 that is in contact with the floor surface 300 .

The connecting rod 40 is a round rod and engages with a top plate height adjuster 50 attached to the back surface 13 of the top plate 10 . In this embodiment, the connecting rod 40 corresponds to the second connecting body.

The connecting pin 30 is inserted through a through-hole provided in each of the first leg 21 and the second leg 26 to rotatably connect the first leg 21 and the second leg 26 .

The leg fixture 35 is an L-shaped angle member slightly shorter than the length (X direction) of the top plate 10 . The leg fixtures 35 are fixed on both sides of the back surface 13 of the top plate 10 in parallel with the X-axis. A through hole is provided at a position slightly forward from the rear end of the leg attachment 35, and the upper end 23 of the first leg 21 is rotatably attached thereto via the connecting pin 32. As shown in FIG.

The top plate height adjuster 50 is an adjuster that changes the height of the top plate 10 by moving forward and backward a connecting rod 40 that connects the upper ends 28 of the left and right second legs 26 . When the connecting rod 40 is moved backward, the intersection angle .theta. The crossing angle θ between the bipod 26 and the first leg 21 is increased, and the position of the top plate 10 is lowered. The top plate height adjuster 50 can be said to be leg angle adjusting means for varying the crossing angle between the second leg 26 and the first leg 21 .

The top plate height adjuster 50 is attached to a pushing tool 51 having a threaded portion 52 and pushing out the connecting rod 40 rearward, and to the tip of the pushing tool 51 so that the connecting rod 40 does not largely separate from the back surface 13 of the top plate 10. - 特許庁and a pusher support 60 that supports the pusher 51 and has a female threaded portion with which the threaded portion 52 of the pusher 51 is screwed.

The pusher support 60 is a hollow rectangular pipe material slightly shorter than the width (Z direction) of the top plate 10, and is attached to the front end of the back surface 13 of the top plate 10 in parallel with the Z axis. A female threaded portion with which the threaded portion 52 of the pusher 51 is screwed is provided at the center of the pusher support 60 in the longitudinal direction. Pusher 51 has threaded portion 52 parallel to the X-axis when attached to pusher support 60 . The pusher 51 has a knob 53 at the proximal end of the threaded portion 52, and the threaded portion 52 advances and retreats by rotating the knob 53. As shown in FIG.

The support plate 55 is a plate material having a substantially L shape in side view and having a length (in the Z direction) of about ⅓ that of the connecting rod 40 . The support plate 55 is not connected to the connecting rod 40 and supports the front and lower portions of the connecting rod 40 . The support plate 55 has a connector 58 on the front surface into which the tip of the threaded portion 52 of the pusher 51 is rotatably fitted. Therefore, even if the pusher 51 is screwed in, the support plate 55 retreats without rotating. The movement of the connecting rod 40 is restricted by the support plate 55 , and the support plate 55 and pusher 51 can also be said to be a stopper that prevents the movement of the connecting rod 40 .

The wheelchair table 1 of this embodiment further includes a pair of left and right guide rails 65 on the back surface 13 of the top plate 10 for guiding the movement of the connecting rod 40 when moving forward and backward. The guide rail 65 is an elongated belt-like member and is attached to the inner side (from the center) of the left and right leg attachments 35 in parallel with the X axis. The distance between the guide rail 65 and the back surface 13 of the top plate 10 is set slightly larger than the diameter of the connecting rod 40 . The guide rail 65 is bent at its front and rear ends and is attached at its front end to the pusher support 60 and at its rear end to a fixture 67 attached slightly behind the connecting pin 32 .

In the wheelchair table 1 constructed as described above, the connecting rod 40 is pushed backward by pushing the pushing tool 51, the crossing angle θ of the crossing leg 20 becomes smaller, and the position of the top plate 10 becomes higher. Conversely, when the pusher 51 is loosened, the connecting rod 40 moves forward while being supported by the support plate 55, the crossing angle .theta.

The crossing leg 20 can be folded so that the first leg 21 and the second leg 26 overlap when the connecting rod 40 is fully moved rearward so as to come into contact with the rear end of the guide rail 65 . Furthermore, since the first leg 21 is rotatably connected to the top plate 10 via the connecting pin 32, the cross leg 20 can be folded compactly so as to be in contact with the back surface 13 of the top plate 10 (Fig. 6). For this reason, it is convenient to carry, and the storage space is small and excellent in storability.

When the wheelchair table 1 is folded as described above, the connecting rod 40 is positioned in the middle portion of the concave portion 15 in the front-rear direction in plan view due to the positional relationship between the connecting pin 32 and the rear end of the guide rail 65 with respect to the top plate 10 . (See Figure 5). Therefore, the wheelchair table 1 can be carried by using the connecting rod 40 as a handle (see FIG. 7).

In the wheelchair table 1 of this embodiment, a connecting plate 70 is attached so as to extend over the lower ends 22 of the left and right first legs 21 . The connecting plate 70 has a function as a reinforcing tool for preventing twisting of the left and right first legs 21 and a function as a mounting base for mounting the footrest 80 . The connecting plate 70 is provided with recesses 72 slightly inward (closer to the center) from the left and right ends. A mounting portion 75 for the footrest 80 is provided between the left and right concave portions 72 . In this embodiment, the connecting plate 70 corresponds to the first connecting body.

The concave portion 72 is provided so that the foot support (footrest) 105 of the wheelchair 100 can pass through when the wheelchair 100 is put under the wheelchair table 1 (see FIGS. 8 and 9). Therefore, the wheelchair 100 can be pushed into the wheelchair table 1 until the back support 102 of the wheelchair 100 touches the rear end of the top plate 10 . Thereby, the person 200 seated on the wheelchair 100 can sufficiently approach the top plate 10 .

The footrest 80 is a rectangular flat plate and is large enough to place the feet of the person 200 sitting on the wheelchair 100 . The footrest 80 is rotatably attached at its front end to the upper end of the attachment portion 75 of the connecting plate 70 via a hinge 85, and can be raised so as to be aligned with the connecting plate 70 in a side view. (See Figure 6). When the footrest 80 is laid down, it rotates around the hinge 85 , and the receiving member 87 of the height adjuster 86 comes into contact with the floor surface 300 to support the footrest 80 .

The footrest 80 has a height adjuster 86 for adjusting the height of the footrest 80 on the rear surface 82 . The height adjuster 86 is composed of a receiving member 87 that contacts the floor surface 300 and supports the load, and a connector 88 having a threaded portion that connects the receiving member 87 and the footrest 80 . A female screw portion into which a connector 88 is screwed is provided at the rear portion of the rear surface 82 of the footrest 80 , and the receiving material 87 is connected to the footrest 80 by screwing the connector 88 into the female screw portion. The height of the footrest 80 is adjusted by changing the length of the connector 88. - 特許庁

The relationship between the wheelchair table 1 and the wheelchair 100 as described above will be described. The wheelchair 100 shown in FIGS. 8 and 9 generally includes a push handle 101, a back support (backrest) 102, a seat (seat) 103, arm supports 104, foot supports 105, drive wheels 107, hand rims 108, and casters 110. wheelchair 100.

The wheelchair table 1 can stand on its own, has a width larger than that of the wheelchair 100, and a top plate 10 higher than an arm support 104 of the wheelchair 100.例文帳に追加When the wheelchair 100 is inserted into the wheelchair table 1 from the side of the concave portion 15 of the top plate 10, the arm support 104 of the wheelchair 100 is placed under the top plate 10, and the foot support 105 of the wheelchair 100 is placed below the connecting plate 70. Since the recess 72 can be passed through, the wheelchair 100 can be sufficiently brought close to the wheelchair table 1 (see FIGS. 8 and 9).

In the wheelchair table 1, the heights of the top plate 10 and the footrest 80 are adjustable, so that the person 200 seated on the wheelchair 100 can take a seated posture that is preferable for meals, that is, the soles 202 on the table 80 and the thighs. The part 204 can be firmly grounded on the seat 103, the upper body 206 can be firmly grounded on the back support 102, the crotch 208 and the knee 210 can be bent at right angles, and the arm 212 can be comfortably placed on the top plate 10. can be placed.

When the seat 103 and the back support 102 are inclined as in the wheelchair 100 of FIG. Cushions 150, 151, etc., may be placed between them. When using the wheelchair table 1, as shown in FIG. 9, the wheelchair table 1 and the wheelchair 100 are tied together using a fixture 120 such as a string. The fixture 120 may be provided on the wheelchair table 1 .

Although the wheelchair table according to the present invention has been described above using the wheelchair table 1 of the first embodiment, the wheelchair table according to the present invention is not limited to the above-described embodiment, and the gist thereof is not changed. It can be changed within the range.

In the above embodiment, the top plate height adjuster 50 is a top plate height adjuster that includes the pusher 51, the support plate 55, and the pusher support 60. However, the top plate height adjuster is , the crossing angle between the first leg 21 and the second leg 26 of the crossing leg 20 can be adjusted, and is not limited to the above embodiment. The material of the wheelchair table is not particularly limited, but wood is preferable for the top plate, cross legs, connecting plate, and footrest.

As described above, the preferred embodiments have been described with reference to the drawings, but those skilled in the art will easily envision various changes and modifications within the obvious scope upon looking at this specification. Accordingly, such changes and modifications are intended to be within the scope of the invention as defined by the appended claims.

1 Wheelchair table 10 Top plate 20 Crossing leg 21 First leg 22 Lower end 26 Second leg 30 Connecting pin 40 Connecting rod 50 Top plate height adjuster 51 Pusher 70 Connecting plate 72 Recess 80 Footrest 86 Height Adjuster 100 Wheelchair 102 Back support 103 Seat 104 Arm support 105 Foot support 150, 151 Cushion material 200 Seated person 202 Sole 208 Crotch 210 Knee 212 Arm 300 Floor surface

Claims (4)

A foldable wheelchair table comprising a pair of left and right crossed legs with an adjustable top plate height,
a top plate having a substantially semicircular recess;
a pair of left and right crossed legs in which a first leg and a second leg are arranged in an X shape and are rotatably connected via a connecting pin;
a first connecting body provided so as to extend over the lower ends of the left and right first legs;
with
A wheelchair table, wherein the first connecting body is provided with a recess through which a foot support of a wheelchair can pass. Furthermore, it has a footrest with adjustable height,
2. The wheelchair table according to claim 1, wherein the footrest has a front end rotatably connected to the first connecting body, and a height adjusting means provided on the back surface of the rear portion of the footrest. The upper ends of the left and right first legs are rotatably attached to the back surface of the top plate rear part,
The left and right second legs are connected by a second connecting body attached so as to extend over the upper ends of each other,
3. The wheelchair according to claim 1, further comprising leg angle adjusting means for moving said second connecting body forward and backward to vary an angle of intersection of said second leg with respect to said first leg. table. The cross leg is folded by moving the second connecting body to the upper end side of the first leg,
When the cross leg is folded, the second connecting body is positioned in the concave portion of the top plate,
4. The wheelchair table according to claim 3, wherein the table is folded using the second connecting body as a handle and is portable.

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