JPS62139652A - Nursing wheelchair - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A0 OBJECTS OF THE INVENTION (1) Industrial Field of Application The present invention relates to an assistance wheelchair, particularly to an assistance wheelchair that can be folded and carried.

(2) Prior Art In the past, many assistance wheelchairs have been realized that are foldable and portable, but in all of them the frame is simply folded and the wheels can be moved to be towed.

(3) Problems to be solved by the invention The above-mentioned conventional products are not compact enough to be conveniently transported even when folded, and it is difficult to find a place to store them with the wheels still attached when carrying them for leisure. It turns out.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an assistance wheelchair that can be folded into an extremely compact size, where there is no need to worry about where to place it, and which is easy to transport. do.

B2 Structure of the Invention (Means for Solving Problems 11) The assistance wheelchair according to the present invention has first and second cases in the shape of a rectangular box that can be opened and closed and that are connected to each other at one end;
and a support disposed between the first and second cases to change the posture between the folded state between the two cases when the second case is closed and the upright state when the second case is opened in response to the opening and closing operations of both cases. a locking mechanism attached to the support mechanism to maintain the upright state; a seat provided to the support mechanism so as to take a posture parallel to the first case in the upright state; a seat that is removable and rotatable; A front rear wheel attached to both ends of the case; a rod-shaped handle protruding from the other end of the second case; and a transportation device provided on the outer surface of the other end wall of either the first or second case. Equipped with wheels and;

(2) Function When in use, the first and second cases are opened to bring the support mechanism into an upright state, and the locking mechanism maintains the upright state, and each wheel is attached to the first case. In this state, the carer can be used as a wheelchair by placing the carer on the seat parallel to the first case and pushing the handle.

When not in use, each wheel is removed, the locking mechanism is released, and the first and second cases are closed. This causes the support mechanism to be folded between the first and second cases. Therefore, the assistance wheelchair, which has a trunk-like appearance, can be easily carried.

Furthermore, by pulling the handle while rolling the transport wheels, transport becomes easier.

(3) Example Below, an example of the present invention will be explained with reference to the drawings. First, in FIGS. 1 to 3, this assistance wheelchair is
First and second cases 1 and 2 in the shape of a rectangular box that can be opened and closed and connected to each other at one end, and the first and second cases 1
．． a support mechanism 3 provided between the first case 2, a seat 4 supported by the support mechanism 3, a pair of rear wheels 5 detachably attached to one end of the first case l, and a pair of rear wheels 5 detachably attached to the other end of the first case l. It includes casters 6 as a pair of front wheels.

One end of the first and second cases 1.2 is connected to a pair of hinges 7.
and both cases 1.2 are connected to each other by the first
As shown in FIGS. 3 to 3, they are rotatable between an open state in which they are substantially perpendicular to each other and a closed state in which their open ends abut against each other. An engaging metal fitting 8 is rotatably supported at the other end of the first case l, and an engagement fitting 8 is rotatably supported at the other end of the second case 2.
A locking pin 9 capable of locking the locking metal fitting 8 when closed is implanted. Therefore, by locking the locking metal fitting 8 to the locking pin 9, the closed state of the first and second cases 1.2 is maintained.

In FIG. 4, the support mechanism 3 includes a pair of vertical rods 10 supported by a first case 1, a pair of horizontal rods 12 supported by a second case 2 via a pair of support fittings 11, and both horizontal rods 10. Rod I2
and a connecting plate 13 that interconnects the two. One ends of both vertical rods 10 are supported by both side plates of the first case 1 via pins 14, respectively. On the other hand, the support fitting 11 is attached to the second case 2
These supporting metal fittings 11 are fixedly installed on the inner surface of both side plates of
are respectively provided with elongated holes 15 extending in the longitudinal direction of the second case 2, and pins 16 protruding from one end of the horizontal rod 12 are slidably fitted into each elongated hole 15. Moreover, each vertical rod 1 is located near the other end of each horizontal rod 12.
0 is connected via a pin 17. Also, connecting plate 1
3 is installed between the portions of both horizontal rods 12 near the other end.

The support mechanism 3 configured in this manner can be used in an upright state when the first and second cases 1, 2 are in the open state as shown in FIG. 4, and in an upright state when the first and second cases 1.2 are closed. The posture can be changed between the folded state shown by the two-dot chain line and the folded state shown in FIG. In particular, since the pin 16 at one end of each horizontal rod 12 is slidable along the long hole 15 of the support metal fitting 11, it is formed by the first and second cases 1.2, the vertical rod 10, and the horizontal rod 12. Even though the links are not parallelograms, the posture change between the standing state and the folded state is performed smoothly.

When the support mechanism 3 is in the upright state, the connecting plate 13
The seat 4 is provided on the connecting plate 13, which is substantially parallel to the case 1. Therefore, when the support mechanism 3 is in the upright state, the seat 4 is also substantially parallel to the first case. A backrest portion 18 is connected to the rear end of the connecting plate 13 so as to be rotatable between a position that is approximately perpendicular to the seat 4 and a position that is in contact with the seat 4, and is approximately perpendicular to the seat 4. In order to prevent the backrest from rotating rearward, support cables 19 are stretched across both sides of the backrest 18 and both ends of the connecting plate 13.

When the support mechanism 3 is in the folded state, not only the support mechanism 3 but also the seat 4 and the backrest part 18 that is folded toward the seat 4 are accommodated in the first and second cases 1 and 2. .

A locking mechanism 20 is attached to the support mechanism 3 to maintain its upright state. The locking mechanism 20 includes a pin 16
．． 17, a shaft 21 is installed across both horizontal bars 12, and a locking shaft 2 is installed across the middle part of both vertical bars 10.
2, and a locking hook 23 which can be locked onto the locking shaft 22 from above and is rotatably supported by the shaft 21.

In this locking mechanism 20, the engagement hook 23 is configured such that it can engage with the locking shaft 22 when the support mechanism 3 is in the upright state.
The length of the support mechanism 3 is determined, and when the support mechanism 3 is engaged, the attitude change of the support mechanism 3 is prevented and the upright state is maintained. Further, when the engagement state of the engagement hook 23 with the locking shaft 21 is released, the attitude of the support mechanism 3 can be changed from the standing state to the folded state.

Referring also to FIG. 5, inside the first case 1, a wheel storage section 24 for storing the rain rear wheels 5 and the picture casters 6 is provided. This wheel storage portion 24 is connected to the support mechanism 3.
In order to avoid obstructing the folded state,
It is provided near one end of the first case 1, and a housing 25 is fixed to the inner surface of the first case 1. Moreover,
A portion of the first case 1 is cut out as a notch 126 at a portion corresponding to the housing 25, and the lid 26 is supported by a hinge 27 or the like at a portion near the other end of the first case 1 so as to be openable and closable.

A fall prevention fitting 29 is rotatably supported by a pin 28 at one end of the first case l. This fall prevention fitting 29
The pin 28 is formed in a straight line with a cross section in a substantially U-shape that opens on the side opposite to the first case, and the length of the pin 28 to one end of the fall prevention fitting 29 is shorter than the length to the other end. The anti-fall fitting 29 is protruded from the outer surface of the central portion in the width direction of the first case 1 in order to support the fall prevention fitting 29 at the intermediate portion thereof. Moreover, the length from the pin 28 to one end of the fall prevention fitting 29 is such that one end of the pin 28 is connected to the lid 26.
The l[26] is selected to such an extent that it can hold down and prevent the lid 26 from opening, and when the fall prevention fitting 29 is rotated to a position where it is removed from the lid 26, the l[26] can be opened.

In FIG. 6, a grounding piece 30 is rotatably provided at the other end of the fall prevention fitting 29. This grounding piece 30 is formed in an abbreviated shape, and one end of the grounding piece 30 is rotatably supported by a shaft 31 at the other end of the fall prevention fitting 29 . Moreover, the fall prevention fitting 29 includes a leaf spring 3 that comes into contact with the grounding piece 30.
2 is fixedly installed, and this leaf spring 32 allows the grounding piece 3 to
0 is resiliently held in a posture with the other end facing the rear side as shown by the solid line in FIG. 6, and a posture with the other end facing downward as shown by the two-dot chain line. Moreover, when the grounding piece 30 is in a posture with its other end facing rearward, the grounding piece 30 is positioned above the road surface 33 on which the rear rain wheel 5 and both casters 6 are in contact with the ground.
The bent portion 30a of is located. In addition, when the other end of the grounding piece 30 is directed downward, the rain rear wheel 5 slightly floats off the road surface 33. This posture change of the grounding piece 30 between the two postures is possible by applying a force to the grounding piece 30 that resists the spring force of the leaf spring 32.

Further, when the first and second cases 1 and 2 are closed and transported, the fall prevention fitting 29 rotates its other end toward the lid 26 side, thereby increasing the amount of protrusion from the first and second cases 1.2. However, in this case, in order to ensure that the fall prevention metal fitting 29 holds down the M26 by rotating the fall prevention metal fitting 29 further than the direction along the longitudinal direction of the first case l,
A stopper pin 34 that comes into contact with the fall prevention fitting 29 is protrudingly provided on the outer surface of the first case l.

In FIG. 7, at both corners of one end of the first case 1,
Guide members 35 are each fixedly provided. Guide holes 36 extending in the width direction of the first case 1 are provided in these guide members 35 and on both sides of the first case 1, respectively.
Axles 37 for pivotally supporting each rear wheel 5 are movably inserted into these guide holes 36, respectively.

On the other hand, a pair of elongated holes 38 for regulating the movement of each axle 37 are bored in one end wall of the first case l, and a barb member 39 is inserted into each elongated hole on the third day. Axle 37
is screwed onto the inner end of the Therefore, each axle 37 is movable in the axial direction within a range in which each screw member 39 contacts both ends of each elongated hole 38 . Moreover, by tightening each screw member 39, the axial position of each axle 37 is fixed.

Referring also to FIG. 8, the outer end of each axle 37 is provided with a substantially U-shaped support portion 37a that opens outward. The regulating pieces 41 are rotatably supported through pins 40 that are perpendicular to each other. These regulating pieces 41 protrude from the axle 37 on both sides when rotated perpendicularly to the axle 37, and when the axle 37 protrudes to the maximum extent, there is a gap between the first case 1 and the regulating pieces 41. The rear wheel 5 can be rotatably supported by the axle 37. Furthermore, when the regulating pieces 41 rotate on the same axis as the axle 37, they do not protrude to the sides of the axle 37, and when the axle 37 is pulled into the guide hole 36, each regulating piece 41 also guides the axle 37. drawn into the hole 36.

In FIG. 9, at both corners of the other end of the first case 1,
Guide members 42 are each fixedly provided. These guide members 42 and the first case 1 are provided with insertion holes 43 that are vertical during use. Further, the guide member 42 is provided with a screw hole 44 that opens facing the middle part of the insertion hole 43 and is perpendicular to the insertion hole 43. On both sides of the first case 1, a screw hole 44 that opens facing the middle part of the insertion hole 43 is provided. Holes 45 are respectively drilled. A screw member 4 is inserted into the through hole 45 from the outside into the screw hole 44.
6 are screwed together, and these screw members 46 can protrude from the screw hole 44 into the insertion hole 43.

On the other hand, each caster 6 is provided with a spindle 47 that can be inserted into the insertion hole 43 from the outside, and the tip of the screw member 46 is formed on the outer surface of each spindle 47 when inserted into the insertion hole 43. An annular engagement groove 48 is provided that can be engaged. Therefore, by inserting the support shaft 47 into the insertion hole 43 and engaging the screw member 46 with the engagement groove 48, the caster 6 is attached to the first case l, and in this state, the caster 6 rotates around the support shaft 47. It can be rotated to Also, by loosening the screw member 46 and separating it from the engagement groove 48, the caster 6 can be moved to the first position.
It can be removed from case 1.

The center part of the part near the other end of the first case 1 has a step stool 4.
9, and this step stool 49 is attached to the first case 1 so that it can be flipped up to the side of the seat 4 when the support mechanism 3 is in the upright state, as shown by the two-dot chain line in FIG. It is pivotally supported in the center by a hinge 50 or the like. Also, stepping stone 49
A stopper 51 that comes into contact with the first case 1 is fixedly provided in order to prevent the first case 1 from rotating toward the side protruding outward from the first case 1.

When this step stool 49 is raised to the side of the seat 4, the person to be assisted is placed in the first case l in order to approach the seat 4 which has been raised up.
This makes it possible to step into the seat, making it easy to seat the person being assisted. Furthermore, when the step stool 49 is lowered, the person being cared for on the seat 4 can place their feet on the step stool 49.

Further, an engagement fitting 8 provided on the first case 1 to maintain the closed state of the first and second cases 1 and 2 is provided on the step stool 49.

In FIG. 1O, guide members 52 are fixedly installed at both corners of the second case 2 on the other end side. These guide members 52 and the other end wall of the second case 2 have a large diameter sliding hole 53 and a small diameter guide hole 5 extending in the longitudinal direction of the second case 2.
4 are drilled in parallel. Both ends of a handle 55 formed by bending a round bar into a substantially U-shape are slid into each sliding hole 53, and the middle part of the handle 55 is connected to the second case 2.
protrudes from the other end wall.

On the other hand, brackets 56 are fixedly installed on both inner sides of one end of the second case 2.
6, a rotation shaft 57 orthogonal to the axle 37 is rotatably supported. A brake rod 58 is fixed to one end of each rotating shaft 57 for braking by pressing against the outer peripheral surface of the rear wheel 5, and a lever 5 for rotationally driving the rotating shaft 57 is attached to the other end.
9 is fixedly installed.

One end of a wire 60 is connected to each lever 59, and when the lever 59 is placed in the position shown by the solid line in FIG. 10 without pulling the wire 60, the brake bar 58 is also placed in the position shown by the solid line in FIG. It is located at a position where it does not protrude outward from the second case 2 and can be stored between the first and second cases 1.2. When the wire 60 is pulled and the lever 59 is rotated to the position PL shown by the two-dot chain line, the brake rod 58 protrudes outward from the second case 2 to a position P close to the rear wheel 5.
Rotate up to 1'. When the wire 60 is further pulled and the lever 59 is rotated to a position P2 shown by a two-dot chain line, the brake rod 58 is rotated to a position P2' where it comes into pressure contact with the outer peripheral surface of the wheel 5, thereby causing the rotation of the rear wheel 5. is braked.

In the middle part of the handle 56 protruding from the second case 2, there is a
A pair of brake levers 61 that can be rotated are provided, and the other ends of wires 60 that movably pass through the guide hole 54 and protrude outward are connected to these brake levers 61, respectively. Ru.

On the outer surface of the second case 2, a pair of screw members 62 (second to
(see Fig. 5) are screwed together so that they can move forward and backward. These screw members 62 can protrude from the inner surface of the sliding hole 53 so as to come into pressure contact with both ends of the handle 55, and by tightening the screw members 62, the position of the handle 55 is fixed.

On the outer surface of one end wall of the first case 1, a pair of transport wheels 63 having a rotational axis perpendicular to the axis of the axle 37 are mounted on the road surface 33 when the first and second cases 1 and 2 are closed and transported. It is arranged so that it can roll.

Next, to explain the operation of this embodiment, when the assistance wheelchair is not used, the first and second cases 1.2
is closed and the engagement fitting 8 is engaged with the locking bin 9. At this time, both wheels 5 and both casters 6 are stored in the wheel storage part 24, and the axle 37 is also pulled inward. . The support mechanism 3 is also in a folded state in accordance with the closure of the first and second cases 1.2.
stored in between. Furthermore, the handle 55 is in a state of being pushed into the first case 2, and its position is fixed by a screw member 62. Moreover, the fall prevention fitting 29 is rotated until it comes into contact with the stopper bin 34 in order to press the lid 26 at the end where the grounding piece 30 is disposed, and the amount of outward protrusion from the first case l is comparatively large. The target is small.

In such a state, as shown in FIG.
3 can be grounded on the road surface 33 and rolled, and the first wheel 63 can be rotated by grasping the handle 55.
And the second case 1.2 can be easily transported. Moreover, in this closed state, the overall size is relatively small, and the first and second cases 1.2
It can be placed in a relatively narrow space, for example, it can be loaded into the trunk of a passenger car and transported, so there is no need to worry about where to put it.

To use the assistance wheelchair, first, open the lid 26 by rotating the fall prevention fitting 29, and take out the pair of rear wheels 5 and the pair of casters 6 from the wheel storage section 24. Then, close the lid 26. , the fall prevention fitting 29 is connected to its grounding piece 3.
0 is rotated so as to protrude from the first case 1, and the lid 26 is held down by the fall prevention fitting 29.

Next, the screw members 39 are loosened to cause each axle 37 to protrude outward, and the screw members 39 are tightened at the maximum protruding position to fix the position of each axle 37. The rear wheels 5 are fitted into the protruding parts of the axle 37 from the outside, and by making the regulating piece 42 at the tip of the axle 37 perpendicular to the axle 37, the attachment of the wheels 5 to the first case 1 is completed. do. On the other hand, the spindle 47 of each caster 6 is inserted into the insertion hole 43 with the screw member 46 loosened. Thereafter, each caster 6 is tightened to engage the engagement groove 48 by tightening the screw member 46.
Attachment to the first case 1 is completed.

In this state, when the engagement between the engagement fitting 8 and the locking pin 9 is released and the second case 2 is opened in an upright position, the support mechanism 3 performs a posture change operation from the folded state to the upright state.
Therefore, the engaging hook 23 is engaged with the locking shaft 22 and locked, thereby fixing the upright state of the support mechanism 3.

In this manner, when the first and second cases 1.2 are opened, the brake rods 58 do not protrude laterally from the second case 2, and even if the brake lever 61 is operated, the brake rods 58 do not protrude from the second case 2. It will not rotate until it comes into pressure contact with 5. Therefore, as shown by the two-dot chain line in FIG. 10, the handle 55 is pulled upward and the screw member 62 is used to fix the handle 55 in that position.

By doing this, the wire 60 is pulled and the lever 59 is moved to the position i.
P1, and the brake rod 58 moves to position PL accordingly.
Therefore, by operating the brake lever 61, the brake rod 58 can be rotated to position P2' to perform braking.

When placing the person to be assisted on the seat 4, the step stool 49 is raised toward the seat 4 side. This allows the person to be assisted to enter the first case 1 and approach the seat 4, making it easier to sit on the seat 4.

After sitting on the seat 4, the step stool 49 can be lowered, and the person being cared for on the seat 4 can put their feet on the step stool 49. At this time, since the stopper 51 comes into contact with the upper surface of the first case 1, the step stool 49 will not open below the first case 1.

In this manner, when the person being assisted is seated on the seat 4, the assistance wheelchair moves when the caregiver pushes the handle 55.

If the person being cared for in seat 4 bends backwards,
There is also a risk that the assistance wheelchair may fall backwards, but since the grounding piece 30 is disposed at the end of the fall prevention fitting 29 extending rearward from the first case 1, the bent part of this grounding piece 30 By making contact with the road surface 33, the vehicle 30a is prevented from falling backward.

When braking while driving, the brake lever 61 can be rotated toward the handlebar 55, and the brake rod 58 can be moved toward the rear wheel 5.
The rear wheels 5 are braked by pressing against the rear wheels 5. Furthermore, when stopping for a relatively long period of time, the handle 55 can be fixed by pulling it further upwards than the position indicated by the two-dot chain line in FIG. Since the wheel 58 is in pressure contact with the rear wheel 5, running can be stopped even if the handle 55 is released. Furthermore, the grounding piece 30 may be rotated as shown by the two-dot chain line in FIG.
Since the tip of the wheel 0 touches the road surface 33 and the rear wheel 5 floats,
Running can be stopped.

After using the wheelchair, the handle 55 is pushed into the second case 2, the brake rod 58 is rotated into the second case 2, and the engagement state of the engagement hook 23 with the locking shaft 22 is released. Afterwards, the second case 2 is closed. As a result, the support mechanism 3 is connected to the first and second cases 1. It is folded in two. Therefore, the engaging fittings 8 are engaged with the locking pins 9, and each rear wheel 5 and each caster 6 are removed from the first case 1 and stored in the wheel storage brake 24. At the same time, the axle 37 is pulled into the first case 1, and the fall prevention fitting 29 is rotated as shown in FIG. 11.

C1 Effects of the Invention As described above, the wheelchair of the present invention includes first and second cases in the form of rectangular surfaces that can be opened and closed and that are connected to each other at one end;
and a support disposed between the first and second cases to change the posture between the folded state between the two cases when the second case is closed and the upright state when the second case is opened in response to the opening and closing operations of both cases. a locking mechanism attached to the support mechanism to maintain the upright state; a seat provided to the support mechanism so as to take a posture parallel to the first case in the upright state; a seat that is removable and rotatable; The front and rear wheels attached to both ends of the case; and the rod-shaped handle protruding from the other end of the second case are provided, so that when not in use, each case can be placed inside the first and second cases configured like a trunk. Components can be assembled and transported, and they can be easily placed even in relatively narrow spaces. Moreover, when in use, the device can be brought into a usable state with a simple operation such as opening the first and second cases. Furthermore, since conveyance wheels are disposed on the outer surface of the other end wall of either the first or second case, by towing the handle while moving the conveyance wheels,
Transport becomes easier.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view in use, FIG. 2 is a view in the direction of the ■ arrow in FIG. 1, and FIG. 3 is a view in the direction of the ■ arrow in FIG. Fig. 4 is a cross-sectional view taken along line IV-fV in Fig. 3, Fig. 5 is a view taken in the direction of the ■ arrow in Fig. 2, Fig. 6 is an enlarged view of the ■ section in Fig. 4, and Fig. 7 is a cross-sectional view taken along the ■ arrow in Fig. 3. -■ line enlarged cross-sectional view Figure 8 is a view taken along the ■ arrow in Figure 7, Figure 9 is an enlarged cross-sectional view taken along the line IX-IX in Figure 1, and Figure 10 is a cross-sectional view taken along the line X-X in Figure 2. FIG. 11 is a front view when not in use. DESCRIPTION OF SYMBOLS 1... First case, 2... Second case, 3... Support mechanism, 4... Seat, 5... Rear wheel, 6... Caster as front wheel, 20...・Lock mechanism, 55
...Handle, 63...Transportation wheel patent Applicant: Sawafuji Electric Co., Ltd. Fig. 6 Fig. 4 Fig. 3 W ° Alternative Fig. 8 Fig. 7 Fig. 11 Fig. 11

Claims (1)

[Claims] First and second cases in the shape of a rectangular box that can be opened and closed and connected to each other at one end; a state in which the first and second cases are folded between the two cases when the two cases are closed, and a state in which the two cases are in an upright state when they are opened; a support mechanism disposed between the first and second cases to change the posture in response to opening/closing operations; a locking mechanism attached to the support mechanism to maintain the upright state; a seat provided on the support mechanism so as to be in a parallel posture; front and rear wheels detachably and rotatably attached to both ends of the first case; first and second wheels;
An assistance wheelchair characterized by comprising: a rod-shaped handle protruding from the other end of the case; and transport wheels arranged on the outer surface of one of the other end walls of the second case.