JP2000042037A - Motor-driven wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven wheelchair capable of easily adjusting the position and height of a small article. SOLUTION: A holder 6 is screwed to one side part of a car body frame 1, plural positioning holes 11 are perforated on a stopper loading plate 9 at the upper part, a shift post 14 is rotatably and vertically movably supported by the guide pipe 8 of the holder 6, a planar almost C-shaped stopper 18 is fitted to the shift post 14 and a pin 19 to be fitted to one of the plural positioning holes 11 is inserted to the lower surface. Then, a horizontal guide part 15 is welded to the upper end part of the shift post 14, an arm 21 is slidably support by the horizontal guide part 15 and a supporting bar 22 for attaching a control box 25 extended in a direction orthogonal to the guide direction of the horizontal guide part 15 is welded to one end part of the arm 21. Once the adjustment work is applied to the shift post 14, the stopper 18 and the arm 21, thereafter it is adusted only by the rotating operation of the screw knob 13 of the guide pipe 8 and the operation of the pin 19 of the stopper 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wheelchair, and more particularly to an improved structure for mounting a small article such as a control box.

[0002]

2. Description of the Related Art In a conventional electric wheelchair, a guide pipe 8 having a screw knob 13 is provided on one side of a body frame 1 constituting a wheelchair via an inverted L-shaped bracket 27, as partially shown in FIG. A shift post 14 extending in the vertical direction is rotatably and vertically movably inserted into and supported by the guide pipe 8, and a horizontal guide cylinder 15 is welded to the upper end of the shift post 14 so as to be welded. The arm 21 is slidably inserted and supported,
A support bar 22 extending in a direction orthogonal to the guide direction of the horizontal guide tube 15 is welded to one end of the arm 21, and a control box (not shown) is attached to the support bar 22 via a fastener.

In the above configuration, when using an electric wheelchair, first, a user is seated on the electric wheelchair, the shift post 14 is turned, the support bar 22 is positioned in front of the user, and the shift post 14 is rotated. And / or moving up and down, and appropriately moving the arm 21 in the front-rear direction of the electric wheelchair to position the control box at a location where the user can easily operate, and then screw-tighten the screw knob 13 to fix the shift post 14. Preparation is complete.
When the preparation is completed, the user operates the switches and levers of the control box as appropriate to drive the drive device, and the electric wheelchair travels to a predetermined place at a predetermined speed.

[0004]

The conventional electric wheelchair is
As described above, when the user gets on and off, the screw post 13 is loosened and the shift post 14 is rotated or moved up and down, so that the position and height of the small articles such as the control box are shifted each time the shift post 14 is rotated. Becomes For this reason, the position and height must be finely readjusted every time the shift post 14 is rotated, and there has been a problem that the operation is very complicated and troublesome.

The present invention has been made in view of the above problems, and has as its object to provide an electric wheelchair capable of easily adjusting the position and height of a small article.

[0006]

According to the first aspect of the present invention, in order to achieve the above object, a driving device is driven to drive a wheelchair. Attach the holder and provide a plurality of positioning recesses on the upper part, and support the shift post in the holder so that it can rotate and move up and down,
A stopper is attached to the shift post, the stopper has a positioning protrusion that fits into one of the plurality of positioning recesses, a horizontal guide is provided above the shift post, and an arm is provided on the horizontal guide. The arm is slidably supported, and the arm is provided with a supporting member for attaching a small article extending in a direction intersecting the guide direction of the horizontal guide portion.

The holder comprises a bracket attached to one side of the vehicle body frame, and a guide pipe attached to the bracket to support the shift post substantially vertically. A stopper mounting plate located on the pipe is attached, a through hole communicating with the upper opening of the guide pipe is provided in the stopper mounting plate, and a plurality of positioning holes forming the positioning recess are provided at predetermined intervals, and the guide is provided. It is preferable that a screw member that comes into contact with and separates from the peripheral surface of the shift post be attached to the pipe.

The stopper is formed in a substantially C-shape in a plane and fitted into the shift post. A pin constituting the positioning projection is provided on the lower surface of the stopper, and a fastener is provided at both free ends of the stopper. It is desirable to attach each. Further, it is preferable that the horizontal guide portion is formed in a cylindrical shape, and a screw member that comes into contact with and separates from the peripheral surface of the arm is attached to the horizontal guide portion.

Here, the vehicle body frame in the claims may be composed of a single frame, or may be composed of a plurality of separable frames. Further, the positioning concave portion may be a penetrating positioning hole, or may be a bottom positioning hole. Further, the horizontal guide portion is preferably a rectangular tube shape, but any structure that can smoothly slide the supporting arm can be used as a cylindrical, U-shaped, C-shaped,
Or it may be U-shaped. In addition, the small articles include at least one or more operation control boxes, various instruments, trays, or electric wheelchair articles having substantially the same size or weight as these.

As the support member, various shapes of bars and plates can be used as long as the support member extends from one side in the width direction of the vehicle body to the other side when the electric wheelchair is used. This support member is preferably provided at the end of the arm, but may be provided at other portions as appropriate. The substantially C-shaped plane of the stopper includes a U-shaped, U-shaped, horseshoe-shaped, or a similar shape thereof. A gap may be provided between the two free ends of the stopper, and a small gap may or may not be provided.

According to the first aspect of the present invention, when the electric wheelchair is used, the height of the shift post supported by the holder is adjusted so that the user of the electric wheelchair can easily use the small articles, and the shift post is used. Rotate to position the support member in front of the user, adjust the position and height of the shift post and the support member in consideration of the user's convenience, etc., and fit the positioning protrusion of the stopper into the appropriate positioning recess. Regulate the rotation of the shift post. When the rotation of the shift post is restricted in this way, if the small article is arranged at a place where the user can easily use the arm by moving the arm, the user can use the small article.

According to the second aspect of the present invention, if the shift post supported by the guide pipe is slid in the vertical direction, the height of the shift post is adjusted so that the user can easily use the small article. can do. Further, when a predetermined positioning hole out of the plurality of positioning holes in the stopper mounting plate and the positioning projection of the stopper are fitted, the rotational position of the shift post is regulated, and the positional shift is prevented. In addition, if the screw member of the guide pipe is screwed, the screw member comes into contact with the shift post and is fixed, so that the play of the shift post can be prevented. Conversely, if the screw member is loosened, the shift post can be slid in the vertical direction.

According to the third aspect of the present invention, when the fastener of the stopper is tightened, the space between both free ends of the stopper is narrowed, and the stopper can be fixed to the shift post.
The height of the shift post can be freely determined. In addition, if a stopper pin is fitted into a predetermined positioning recess of the plurality of positioning recesses, it is possible to freely determine the rotational position of the shift post and prevent the shift post from shifting. Further, according to the fourth aspect of the present invention, the horizontal guide portion supports the arm in a penetrating state with a simple configuration. Also,
If the arm is appropriately moved in the front-rear direction of the electric wheelchair and the screw member of the horizontal guide portion is screwed, the screw member comes into contact with the arm and is fixed, thereby preventing displacement of the arm.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. As shown in FIGS. 1 to 3 and the like, the electric wheelchair according to the present embodiment has a holder 6 screwed to one side of the body frame 1 constituting the wheelchair, and the shift post 14 is rotatable on the holder 6, and A stopper 18 is detachably fitted near the lower part of the shift post 14 so as to be vertically movable, and the arm 21 is slidably inserted and supported in the horizontal guide part 15 at the upper end of the shift post 14. A support bar 22 for attaching a control box 25 is welded to the arm 21.

The vehicle body frame 1 includes a chassis frame and a seat frame removably mounted on the chassis frame. The vehicle body frame 1 has casters 2 serving as front wheels rotatably supported on both front sides thereof. A battery cover (not shown) accommodating a plurality of power supplies and a power supply from the power supply run from the lower center to the rear. A pair of driving devices (not shown) driven by the motors are respectively installed, and driving wheels (not shown) serving as rear wheels are fitted to output shafts of the respective driving devices.

A substantially inverted U-shaped back frame 3 is erected on the back of the body frame 1 via a fastener so as to be tiltable, and a seat back is mounted on the back frame 3. On the right and left sides of the body frame 1, substantially inverted L-shaped pipes are respectively erected via fasteners, and a plate-shaped armrest guard 4 and a detachable armrest 5 are screwed to the pipes, respectively. ing.

As shown in FIGS. 3 to 5, the holder 6 has a substantially plate-shaped bracket 7 which is screwed to one side of the body frame 1 via bolts, and is vertically welded to the surface of the bracket 7. And a cylindrical guide pipe 8 which supports the shift post 14 vertically therethrough. The bracket 7 has an upper end bent toward the front side, and a stopper mounting plate 9 located on the guide pipe 8 is horizontally welded to the upper end of the bracket 7. A through-hole 10 communicating with the upper portion is formed, and a plurality of positioning holes (three in this embodiment) 11 located around the through-hole 10 are formed at predetermined intervals. A screw hole is formed in the peripheral surface on the front surface side of the guide pipe 8, and a nut 12 communicating with the screw hole is welded. The knob 13 is screwed.

The shift post 14 is shown in FIGS. 3, 6 (a) and 6 (b).
As shown in FIG. 2, a rectangular tubular horizontal guide portion 15 extending in the front-rear direction (left-right direction in FIG. 2) of the electric wheelchair is horizontally welded to the upper end of the cylindrical shape. Rubber 16 for closing is fitted. Horizontal guide 15
A screw hole is drilled in the upper part of the side surface, and a nut communicating with the screw hole is welded. A screw knob 17 that comes into contact with and separates from the peripheral surface of the arm 21 is screwed into the nut.

As shown in FIG. 3, the stopper 18 is formed in a substantially C-shaped plane so as to surround the shift post 14, and is mounted on the stopper mounting plate 9. This stopper 18
A pin 19 is vertically inserted into the lower surface, and the pin 19 is selectively fitted into one of the plurality of positioning holes 11. Screw holes are respectively formed in the free ends of the stopper 18 so as to penetrate therethrough. Screws 20 are screwed into the pair of screw holes. Therefore, by appropriately rotating the screw 20, the stopper 18 can be firmly fixed to the shift post 14, or the stopper 18 can be shifted in the vertical direction of the shift post 14.

Further, as shown in FIGS. 3 and 7, the support bar 22 is formed in a cylindrical shape, is horizontally welded to one end of the rectangular cylinder arm 21, and is supported from one side of the body frame 1. It is orthogonally oriented to the other side, and a plug 23 for closing is fitted at the open end. A pair of upper and lower clamps 24 are clamped to the support bar 22 via fasteners, and a control box 25 is supported and mounted on the pair of clamps 24 via fasteners.

In the above configuration, when using an electric wheelchair, first, a user is seated on the electric wheelchair, and the height of the shift post 14 is set so that the user can easily operate the control box 25. Then, the stopper 20 is fitted and fixed to the shift post 14 by screwing. Next, the shift post 14 is turned to support the support bar 2.
2 is positioned roughly in front of the user, and the position and height of the shift post 14 and the support bar 22 are set in consideration of the convenience of the user.
The pin 19 is fitted to restrict the rotational position of the shift post 14, and the screw knob 13 of the guide pipe 8 is screwed to prevent the shift post 14 from rattling.

Next, the arm 21 is appropriately moved in the front-rear direction of the electric wheelchair, and the control box 25 is positioned at a place where the user can easily operate.
When the arm 21 is fixed by screwing the screw knob 17 of No. 5, the preparation is completed. When the preparation is completed in this way, the user operates the switch of the control box 25 and the lever 26 as appropriate to drive the drive device, and the electric wheelchair travels to a predetermined place at a predetermined speed.

When the user gets off the electric wheelchair,
If the screw knob 13 of the guide pipe 8 is loosened, the pin 19 of the stopper 18 is removed from the positioning hole 11, and the shift post 14 is turned to move the support bar 22 away from the front of the user, the user can easily move from the electric wheelchair. You can get down to

According to the above configuration, once the shift post 14, the stopper 18, and the arm 21 are adjusted once,
After that, only the rotation operation of the screw knob 13 of the guide pipe 8 and the operation of the pin 19 of the stopper 18 are sufficient.
The screwing operation of the screw 20 of the stopper 18 and the screwing operation of the screw knob 17 of the horizontal guide portion 15 can be omitted. Therefore, the work of finely re-adjusting the position and height of the control box 25 every time the shift post 14 rotates can be speeded up, smoothed, simplified, and facilitated. Furthermore, the number of parts is small with a simple configuration, and the operability is very good.

[0025]

As described above, according to the first aspect of the present invention, there is an effect that the operation of adjusting the position and height of a small article can be simplified and facilitated with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an embodiment of an electric wheelchair according to the present invention.

FIG. 2 is a main part side view showing the embodiment of the electric wheelchair according to the present invention.

FIG. 3 is an exploded perspective view showing an embodiment of the electric wheelchair according to the present invention.

FIG. 4 is a plan view showing a holder in the embodiment of the electric wheelchair according to the present invention.

FIG. 5 is an explanatory view showing a holder in the embodiment of the electric wheelchair according to the present invention.

FIG. 6 is an explanatory view showing a shift post in the embodiment of the electric wheelchair according to the present invention, wherein FIG. 6 (a) is a side view and FIG. 6 (b) is a front view.

FIG. 7 is a plan view showing an arm and a support bar in the embodiment of the electric wheelchair according to the present invention.

FIG. 8 is a perspective view of a main part showing a conventional electric wheelchair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 6 Holder 7 Bracket 8 Guide pipe 9 Stopper mounting plate 10 Through hole 11 Positioning hole 12 Nut 13 Screw knob (screw member) 14 Shift post 15 Horizontal guide portion 17 Screw knob (screw member) 18 Stopper 19 Pin 20 Screw ( Fasteners) 21 Arm 22 Support bar (support member) 25 Control box (small article)

Claims (4)

[Claims] 1. An electric wheelchair for driving a wheelchair by driving a driving device, wherein a holder is mounted on one side of a body frame constituting the wheelchair, a plurality of positioning recesses are provided on an upper portion thereof, and the holder is shifted. The post is rotatable and vertically movable, and a stopper is attached to the shift post, and the stopper is provided with a positioning projection that fits into any one of the plurality of positioning recesses. A horizontal guide portion is provided, the arm is slidably supported on the horizontal guide portion, and a support member for attaching a small article extending in a direction intersecting the guide direction of the horizontal guide portion is provided on the arm. Electric wheelchair. 2. The holder comprises: a bracket attached to one side of the vehicle body frame; and a guide pipe attached to the bracket to support the shift post substantially vertically. A stopper mounting plate located on the pipe is attached, a through hole communicating with the upper opening of the guide pipe is provided in the stopper mounting plate, and a plurality of positioning holes forming the positioning recess are provided at predetermined intervals, and the guide is provided. The electric wheelchair according to claim 1, wherein a screw member that comes into contact with and separates from the peripheral surface of the shift post is attached to the pipe. 3. The stopper is formed in a substantially C-shape in a plane and fitted into the shift post. A pin constituting the positioning projection is provided on a lower surface of the stopper, and a fastener is provided on both free ends of the stopper. The electric wheelchair according to claim 1 or 2, wherein the electric wheelchair is attached. 4. The electric wheelchair according to claim 1, wherein the horizontal guide portion is formed in a cylindrical shape, and a screw member that comes into contact with and separates from the peripheral surface of the arm is attached to the horizontal guide portion.