JP2003126164A - Table appliance of wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table appliance which can be contained to the side of a wheelchair normally and be placed over a person's knee in a wheelchair in a horizontal direction when using it. SOLUTION: A table appliance of a wheelchair has a table shaft which slides freely in a cross direction and sets a table at a front part within a supporting tube fixed on the side of a wheelchair, a linear cross direction groove which is formed on an external surface of the table shaft in a cross direction, a protrusion which juts out from an inner face of the supporting tube and fits into the cross direction groove, a circumferential groove which runs at right angles with the cross direction groove so that the protrusion fits at a table pulling out position, a spring which biases the table shaft backward, and a stopper appliance which arrests a table in a horizontal situation by turning and pulling out a table. The table is contained inside a wheel at the side of a wheelchair.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table device that can be pulled out to the front of a wheelchair.

[0002]

2. Description of the Related Art In a conventional wheelchair, when a person in a wheelchair eats or reads a book as it is,
It would be nice to have a table. However, this table usually interferes with getting on and off the wheelchair.

[0003]

SUMMARY OF THE INVENTION In view of the above, the present invention provides a table device for convenience of use by a person in a wheelchair, which is normally stored on the side surface of the wheelchair. , A table device that can be set horizontally above the knees of a person in a wheelchair during use is provided.

[0004]

A table device for a wheelchair according to the present invention is slidably assembled in a front and rear direction in a support cylinder attached to a vehicle body frame at a position lower than an armrest inside a wheel on a lateral side of the wheelchair. A table is attached to the front part of the table support rod, and the stored state of the table is lower than the armrest inside the wheel on the side of the wheelchair, and the table is pulled out and rotated to move the table to the seat of the wheelchair. It is configured to be kept horizontally at the upper front part of the.

The table device for a wheelchair according to the present invention is
A support cylinder provided on the side of the wheelchair, a table support rod that is slidably combined in the support cylinder in the front-rear direction and has a table attached to the front portion, and a straight line formed in the front-rear direction on the outer surface of the table support rod. -Shaped front-rear groove, a protrusion protruding from the inner surface of the support cylinder and fitted into the front-rear groove, and a circle orthogonal to the front-rear groove so that the protrusion fits at the position where the table is pulled out. Circumferential groove,
A spring for urging the table support rod backward is provided, and the table can be pulled out and stored in a fitted state of the convex portion and the longitudinal groove, and the convex portion and the circumferential groove are fitted together. In a combined state, the table is rotatable, and a stopper device for stopping the table in a horizontal state by pulling out and rotating the table is provided, and the table is stored inside the wheel on the side of the wheelchair. Is.

In this way, a person in a wheelchair can form a table above his or her knees while sitting. This table can be stored along the side of the wheelchair, inside the wheel, at a lower position than the armrest, so it does not interfere with the operation of the operating wheel provided along the outside of the wheel, and it is normally not used until now. Acts as a street wheelchair.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 to 7 show an embodiment of the table device of the present invention. 1 is a schematic perspective view of a wheelchair equipped with the table device of the present invention, FIG. 2 is a side view for explaining the table device of the present invention, FIG. 3 is an explanatory view of a stored state of the table device of the present invention, and FIG. 4 is a book. FIG. 5 is an explanatory view of the relationship between the support cylinder and the table support rod in the housed state of the table device of the invention, FIG. 5 is an explanatory view of the table set state of the table device of the invention, and FIG. 6 is support in the table set state of the table device of the invention. FIG. 7 is an explanatory view of the relationship between the cylinder and the table support rod, and FIG. 7 is an explanatory view of the relationship between the longitudinal groove and the circumferential groove of the table device of the present invention.

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a general self-driving wheelchair. Main wheels 3 are rotatably attached by axles on both sides of a vehicle body 2 formed by connecting pipe frames 8. Inside a wheel 3, an armrest 4 is provided. A seat 6 that forms a seat and a backrest 7 that extends from the seat 6 to a grip 5 that is formed on the upper rear portion of the vehicle body 2 are provided. The footrest 9 provided and the vehicle body 2 in front of the main wheels 3
The wheelchair 1 is provided with a caster 10 rotatably attached to a vertical frame of the wheelchair, and a person on the wheelchair 1 grips and operates a wheel 11 that is attached to the outside of the wheel 3 with a space therebetween to move the wheelchair 1 forward and backward. It is a structure that can be operated such as rotation. This wheelchair 1 has a variety of shapes, but is generally configured on the market, and in addition to this, a brake device 12, a legrest 13 for supporting a calf of a person on the wheelchair 1, and the like are provided. There is.

The present invention provides a table device 20 which is effectively applied to such a wheelchair 1 and which can be effectively pulled out and stored. The table device 20 of the present invention is a table support rod 2 which is slidably assembled in a front-rear direction in a support cylinder 21 attached to a vehicle body frame 2 at a position lower than an armrest 4 inside a wheel 3 on a side of a wheelchair 1.
A table 22 is attached to the front part of the wheelchair 3, and the stored state of the table 22 is lower than the armrest 4 inside the wheel 3 on the lateral side of the wheelchair 1. When the table 22 is pulled out and rotated, the table 22 is wheelchaired. It is a configuration in which the seat 6 of No. 1 is kept horizontally at the upper front portion.

The table device 20 will be described in more detail below. The table device 20 includes a support cylinder 21 provided on the side of the wheelchair 1, a table support rod 23 having a table 22 attached to a front portion of the support cylinder 21 slidably assembled in the front-rear direction, and a table support rod. 23
A straight longitudinal groove 24 formed in the front-back direction on the outer surface of the
A convex portion 25 protruding from the inner surface of the support cylinder 21 and fitted into the longitudinal groove 24, and a table support rod 23 orthogonal to the longitudinal groove 24 so that the convex portion 25 fits in the position where the table 22 is pulled out. Circumferential groove 2 formed on the outer surface of the
6 and a spring 27 for urging the table support rod 23 rearward, the table 22 can be pulled out and stored in the fitting state of the convex portion 25 and the longitudinal groove 24, and the convex portion 25 and the circumferential direction can be stored. The table 2 in the fitted state with the groove 26
2 becomes a rotatable state, and the stopper device 2 stops the table 22 in a horizontal state when the table 22 is pulled out and rotated.
8 is provided, and the table 22 is stored inside the wheel 3 on the side of the wheelchair 1.

The support cylinder 21 is fixed to the inverted L-shaped support member 29 fixed to the pipe frame 8 constituting the vehicle body 2 by the bolt screw 30 by the bolt screw 33 so as to be arranged on the side of the wheelchair 1. The spring 27 is a coil spring inserted through the outer circumference of the table support rod 23, the front end of which is in contact with the rear end of the support cylinder 21, and the rear end of which is a support plate 32 which is fixed to the rear end of the table support rod 23 by a screw 31. Abutted and held. The support plate 32 constitutes a movable side stopper 40 of a stopper device 28 described later.

The table device 20 is a stopper device 28 for stopping the table 22 in a horizontal state when the table 22 is pulled out and rotated toward a predetermined horizontal state.
Is equipped with. This structure is used for the support plate 3 of the coil spring 27.
The movable side stopper 40 is formed by projecting a part of 2 and the movable side stopper 40 contacts the corner portion 29A of the inverted L-shaped support member 29 by the rotation of the table 22, and the table 22 is held at this position. Hold horizontally. Therefore, the movable stopper 4 that operates together with the table support rod 23
0 and an inverted L-shaped support member 29 which is a fixed side stopper attached to the vehicle body 2 constitute a stopper device 28.

The circumferential groove 26 is formed on the outer surface of the table support rod 23 so as to be orthogonal to the front-rear groove 24 at the maximum drawing position of the table 22. Therefore, when the table 22 is rotated from the outer side to the inner side at the maximum pull-out position of the table 22, the convex portion 25 moves to the fitting from the longitudinal groove 24 into the circumferential groove 26, and the convex portion 25 is moved. The table 22 can be rotated by the engagement between the table 22 and the circumferential groove 26.

In the above-mentioned structure, the table 22 is stored in the coil spring 27 as shown by the dotted line in FIG.
7A, the table 22 is retracted to 22A, the table support rod 23 is retracted to 23A, and the movable stopper 40 is retracted to 40A. In this state, the convex portion 25 has the longitudinal groove 24.
Is fitted to. When the table 22 is pulled forward against the force of the spring 27 from this stored state, the convex portion 25 causes the front-back groove 2 to move.
The table 22 is pulled out forward while being fitted in 4, and the spring 27 is in a compressed and substantially maximum pulled-out position. This state is shown by a solid line in FIG. 2, and the convex portion 25 is located at the intersection of the longitudinal groove 24 and the circumferential groove 26. By rotating the table 22 from the outer side to the inner side as shown by the arrow P in FIG. 3 from this state, the fitting of the convex portion 25 shifts from the front-rear direction groove 24 to the circumferential groove 26, and the convex portion 25. The table 22 can be largely rotated by the engagement of the groove 22 with the circumferential groove 26. When this rotation reaches approximately 270 °, the movable stopper 40 comes into contact with the corner portion 29A of the fixed stopper 29 and stops, and in this stopped state, the table 22 is held in a horizontal state by its own load.

When the table 22 is to be housed, it is rotated from the inner side to the outer side as shown by an arrow Q in FIG. As shown by the solid line position in Fig. 2, it is in a substantially vertical hanging state. In this state, the convex portion 25 is located at the intersection of the longitudinal groove 24 and the circumferential groove 26, and the convex portion 25 is fitted from the circumferential groove 26 into the longitudinal groove 24 by the extension force of the return spring 27. When the projections 25 and the longitudinal grooves 24 are fitted to each other, the table 22 retracts to the dotted line state in FIG.

When the support cylinder 21 is formed by molding a metal such as aluminum or a synthetic resin, the convex portion 25 may be formed by forming a straight convex shape on the inner surface of the support cylinder 21. In the embodiment, in order to reduce the frictional resistance between the convex portion 25 and the circumferential groove 26 and the longitudinal groove 24, the convex portion 25
Is a ball, and a bolt screw 46 for accommodating the ball 25 and a spring 45 for pressing the ball 25 toward the table support rod 23 is screwed into the support cylinder 21.
As a result, the ball 25 is brought into contact with the circumferential groove 26 and the longitudinal groove 24 to rotate.

As described above, since the table 22 can be pulled out from the side surface of the vehicle body 2 and can be stored in the side surface of the vehicle body 2, it does not interfere with the running operation of the wheelchair 1 and can be used according to the usage state. Can be used. The table device 20 may be provided on either the left or right side of the wheelchair 1. However, if the table device 20 is provided on one side, if the table 22 is a long and long object, the table 22 will be stored. When doing so, it hits the lower brake device 12 and cannot be stored. In this case, by mounting the table device 20 on the left and right sides of the wheelchair 1 inside the wheels 3, the table 22 can be used widely and shortly.

In the table device 20 of the present invention, since the table 22 is housed inside the wheel 3 on the side of the wheelchair 1 in the housed state, it is attached to the frame 8 of the vehicle body 2 below the armrest 4. Has been. It is easier to use the table 22 if the table 22 is located closer to the person sitting on the wheelchair 1 than it is. In consideration of this, a notch 48 is formed at the rear end of the table support rod 23 so as not to collide with the pipe frame 8 when the table 22 is pulled out and rotated. This allows the table 22
Can be brought close to a person sitting in the wheelchair 1 when it turns to a horizontal state.

In order to prevent the table 22 from jumping out forward when the table 22 is stored, instead of the return spring 27, a recess in which the ball 25 fits slightly deeply is formed in the longitudinal groove in the table stored state. Can be achieved by doing. With this configuration, when the table is stored, the ball 25 fits into the concave portion and the table 2
2 is prevented from jumping forward due to vibration, and the table 22 can be pulled out and set in a horizontal state as described above by strongly pulling the table 22 forward against the spring force that pushes the ball.

The present invention is not limited to the above-described embodiment, and various modifications can be considered without departing from the technical scope of the present invention, and include various embodiments related thereto.

[0021]

According to the present invention, a person in a wheelchair can form a table above his or her knees while sitting. This table can be stored along the side of the wheelchair, inside the wheel, at a lower position than the armrest, so it does not interfere with the operation of the operating wheel provided along the outside of the wheel, and it is normally not used until now. Acts as a street wheelchair.

According to a second aspect of the present invention, by fitting the support cylinder and the table support rod together with the front and rear grooves and the circumferential groove and the projections that are fitted into the grooves, the table can be stably drawn and stored. In the stored state of the table, the table does not hit the wheels even if the wheelchair sways left and right. Further, by providing the return spring, the table can be conveniently stored, and the table can be stored and held at a predetermined position, and the table can be prevented from jumping forward due to vibration while the wheelchair is running.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a wheelchair equipped with the table device of the present invention.

FIG. 2 is a side view for explaining the table device of the present invention.

FIG. 3 is an explanatory diagram of a stored state of the table device of the present invention.

FIG. 4 is an explanatory view of a relationship between a support cylinder and a table support rod in a housed state of the table device of the present invention.

FIG. 5 is an explanatory diagram of a table set state of the table device of the present invention.

FIG. 6 is an explanatory view of the relationship between the support cylinder and the table support rod in the table set state of the table device of the present invention.

FIG. 7 is an explanatory view of the relationship between the longitudinal groove and the circumferential groove of the table device of the present invention.

[Explanation of symbols]

1 …… Wheelchair 2 ... Body 4 ... Armrest 8: Body structure frame 20 ... Table device 21 ... Support tube 22 ... table 23 ... Table support rod 24 ... Front-rear groove 25 ... Convex part 26 ... Circumferential groove 27 ... Spring 28: Stopper device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mikako Kawamura             Shizuoka Prefecture Hamamatsu City Shimbashicho 1103 Wise Co., Ltd.             In gear F-term (reference) 3B060 AB01 AB06 AC05                 3B084 KA02 KA05

Claims (2)

[Claims] 1. A table is attached to a front portion of a table support rod which is slidably combined in a front and rear direction in a support cylinder attached to a vehicle body frame at a position lower than an armrest inside a wheel on a side of a wheelchair. The stored state of the table is lower than the armrest inside the wheel on the side of the wheelchair, and when the table is pulled out and rotated, the table is kept horizontal in the front upper part of the seat of the wheelchair. Table device. 2. A support cylinder provided on a lateral side of a wheelchair, a table support rod having a table attached to a front portion thereof which is slidably combined in the support cylinder in a front-rear direction, and a front and rear portion on an outer surface of the table support rod. Direction linear groove formed in the direction, a convex portion projecting from the inner surface of the support cylinder and fitted into the longitudinal groove, and the front-back direction so that the convex portion fits in the position where the table is pulled out. A circumferential groove that is orthogonal to the groove and a spring that biases the table support rod backward are provided, and the table can be pulled out when the convex portion and the front-rear groove are fitted to each other. The table is provided with a stopper device that makes the table rotatable when the table and the circumferential groove are engaged with each other, and stops the table in a horizontal state when the table is pulled out and rotated. A wheelchair table device configured to be housed inside a wheel on the side of a wheelchair.