JP3200102U - Self-propelled wheelchair - Google Patents

Abstract

[PROBLEMS] To easily perform a series of actions such as lowering and excreting underwear and trousers in a wheelchair, raising the underwear and trousers by one's own power. It provides a wheelchair with a structure that allows you to take a nap while taking an easy posture. The seat portion is composed of a seat surface with a hole and a cushion portion that is placed on the seat surface and surrounds the hole and is detachable from the remaining portion. On both the left and right sides of the seat portion, armrest portions that are firmly fixed and extend long in the front-rear direction are provided. Since it is easy to lift the waist by placing the tip of the elbow on the armrest and pressing firmly, it is possible to easily remove the cushion piece 19 and lift the underwear and pants while lifting one waist. . Further, the backrest part falls backwards, and at that time, the foot part is also lifted to be in a chaise longue state. [Selection] Figure 2

Description

  The present invention relates to a self-propelled wheelchair that a user operates by himself / herself, and particularly to a self-propelled wheelchair that can actively support a self-supporting life in a room.

In Japan, aging has progressed, and as of 2013, the proportion of elderly people aged 65 and over accounted for 25% and the proportion of elderly people aged 75 and over in the total population was 12%. Along with such an increase in the number of elderly people, the number of elderly people who need nursing care has reached about 5.64 million people, including mild people.
It is impossible to handle all such elderly people by home care by their families, and expectations for facility care are further increasing.

The facilities include nursing care facilities for the elderly, special nursing homes for the elderly, pay nursing homes, etc., and the number of care workers, nurses, etc. is defined. For example, in a nursing care facility for the elderly, it is stipulated that one care worker is arranged for four residents. This ratio is determined in consideration of appropriate care for residents, but it is said that care work is "low wages for work, but it is difficult to secure human resources year by year." It has become.
In response to this, the Ministry of Health, Labor and Welfare is trying to support the securing of human resources by revising nursing care rewards and raising wages for nursing care workers, but this measure alone will address the current crisis situation. Is difficult.

By the way, what is said to be particularly hard work at the nursing site is assistance during excretion, but when excretion, lower the underwear and pants, transfer it from the wheelchair to the toilet, and excrete this time. All assistance in a series of actions such as transferring from a toilet bowl to a wheelchair and raising underwear and pants is necessary, and assistance for the assistant is particularly difficult physically. In addition, it is easy to have physiological dislikes such as “dirty” and “odor” for the excretion of others, and the person being cared for also says, “I do not want to take care of the bottom”. Many people have a sense of resistance.
Thus, the assistance operation for a series of actions performed during excretion is a heavy burden not only for the assistant but also for the person who is being assisted.

In addition, many elderly people who need assistance during excretion as described above sit on a wheelchair and spend part of their body during the day.
Therefore, if you can take a nap as it is in a wheelchair when you are tired, you can take a nap everywhere and there is no need to transfer to bed, so you need assistance in daytime life Will drop dramatically.

JP 2013-34788 A

The current self-propelled wheelchair, as shown in Patent Document 1, places importance on the folding function.
Therefore, there are not many opportunities for folding for the elderly who continue to use the wheelchair all the time. Rather, as mentioned above, from the viewpoint of the daytime life of the elderly and the assistance burden on the caregiver side. The most important function is the priority.

  The present invention has been made by paying attention to the above-mentioned conventional problems, and by using the physical functions left by wheelchair users, the underwear and trousers are lowered and excreted in the wheelchair. Providing a wheelchair with a specially designed structure so that a series of actions of raising pants can be easily performed by one's own power The purpose is to provide wheelchairs.

  In addition, the present invention provides a wheelchair with a specially designed structure so that when a user of a wheelchair gets tired, he can take a nap while taking a comfortable posture in the wheelchair. The object is to provide a new and useful wheelchair that can significantly reduce the necessary scenes.

  The present invention has been made to solve the above problems, and the invention of claim 1 is based on a seat surface with a hole and a portion placed on the seat surface, and a portion surrounding the hole is a surplus portion. On the other hand, a seat composed of a detachable cushion, and an armrest that is firmly fixed to the left and right sides of the seat, extends in the front-rear direction, and serves as a storage box with a flat top surface, and rear Equipped with a backrest with a reclining function that tilts in the direction, supports the armrest, lifts the waist, and opens the hole on the seating surface so that it can be excreted using the hole while sitting Thus, a self-propelled wheelchair that makes it possible to take a nap in an easy posture by defeating the backrest portion.

  According to a second aspect of the present invention, in the self-propelled wheelchair according to the first aspect, the foot portion is connected to the backrest portion via a link mechanism so as to be interlocked, and the backrest portion is attached to the seat portion by a reclining function. When it rotates, the foot part also rotates in the same direction with respect to the seat part, and the backrest part and the foot part change from a posture close to a normal chair to a posture that is almost linear in a side view. This is a self-propelled wheelchair characterized by

  According to a third aspect of the present invention, in the self-propelled wheelchair according to the second aspect, the link member of the link mechanism is provided with a latching concave portion, and an operation portion having an advancing / retracting shaft is provided on the fixed frame side supporting the seat portion. The link mechanism is locked when the advance / retreat shaft advances and is latched in the latch recess, and the link mechanism is unlocked when the advance / retract axis is retracted and the latch is released. A self-propelled wheelchair characterized by being locked.

  According to a fourth aspect of the present invention, in the self-propelled wheelchair according to the second or third aspect, a gas spring is interposed between one link member of the link mechanism and the fixed frame side supporting the seat portion. The self-propelled wheelchair is returned to the state before the rotation by the elastic biasing force of the gas spring.

  A fifth aspect of the present invention is the self-propelled wheelchair according to any one of the first to fourth aspects, wherein the cushion portion is detachable.

  A sixth aspect of the present invention is the self-propelled wheelchair according to any one of the first to fifth aspects, wherein the footrest is of a flip-up type.

According to the self-propelled wheelchair of the present invention, a wheelchair user can easily perform a series of actions such as lowering and excreting underwear and trousers and raising the underwear and trousers with his own power in the wheelchair. it can.
When a wheelchair user gets tired, he can take a nap while taking a comfortable posture in the wheelchair.
It should be noted that the present invention is particularly useful not only for elderly people but also for people who always use a wheelchair indoors.

1 is a perspective view of a self-propelled wheelchair according to an embodiment of the present invention. It is a disassembled perspective view of the seat part of the wheelchair of FIG. It is a perspective view of the seat surface of FIG. It is a perspective view of the armrest part of FIG. It is a side view of FIG. It is explanatory drawing of the locking means of FIG. It is explanatory drawing when performing an excretion act with the wheelchair of FIG. It is explanatory drawing of the positional relationship of the toilet bowl and wheelchair in FIG. It is explanatory drawing of the positional relationship of a toilet bowl and a seat surface (wheelchair) similarly to FIG. It is explanatory drawing when taking a nap with the wheelchair of FIG. It is explanatory drawing which shows the state which enjoys footbath with the wheelchair of FIG.

A self-propelled wheelchair 1 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the wheelchair 1 includes a frame body 3 that is assembled three-dimensionally. In this embodiment, the frame body 3 is made of aluminum. However, the frame body 3 is not limited to this. For example, the frame body 3 may be made of iron, titanium, carbon, magnesium, or the like. The frame body 3 is substantially left-right symmetric, and a drive wheel 5 and a grip ring 7 and a small free wheel 9 for changing the direction are attached to both outer sides in the left-right direction.

In addition, seats 11 are attached to portions of the frame body 3 that are laid horizontally on both the left and right sides. As shown in FIG. 2, the seat portion 11 has a two-layer structure, and the lower portion is a rectangular plate-like seat surface 13. The seat surface 13 is fixed to the frame body 3. As shown in FIG. 3, a low wall rises from the three edges of the seating surface 13, and there is no wall only on the front side. The edge of this wall is rounded 13R. The seat surface 13 is inclined upward on the rear side to form a raised portion 13A. This is because the shape of the toilet bowl described later is taken into consideration.
A slightly long hole 15 is formed in the seat surface 13 in the front-rear direction. As shown in the enlarged view, the edge of the hole 15 is curved and rounded 15R.

Reference numeral 17 denotes a cushion portion. The cushion portion 17 has substantially the same rectangle as the seat surface 13, and the entire surface including the hole 15 is covered when the seat surface 13 is covered from above. The cushion portion 17 is divided into cushion pieces 19, 21, and 23, which are arranged to form a rectangle as a whole. The cushion piece 19 has a symmetrical tongue-like shape and extends rearward from the front end. The cushion pieces 21 and 23 have a shape obtained by dividing a portion excluding the cushion piece 19 from the entire cushion portion 17 by a central axis in the left-right direction. When only the cushion piece 19 is removed, the whole hole 15 of the seat surface 13 is exposed with a margin.
The cushion piece 19 has a main body enclosed in a cover bag, and the main body has a three-layer structure as shown in the enlarged sectional view of FIG. 2, and a relatively hard cushion 19B is placed on the aluminum thin plate 19A. A relatively soft cushion 19C is placed thereon and integrated.
On the other hand, although not shown in the figure, the cushion pieces 21 and 23 are composed of only a relatively hard sponge 19B and a relatively soft sponge 19C, and do not include the aluminum thin plate 19A.
As shown in FIG. 1, the cushion piece 19 is placed on the hole 15 of the seat surface 13 and the periphery thereof, but the cushion piece 19 has a rigid aluminum thin plate 19 </ b> A as a bottom plate. There is no possibility of getting into the hole 15.

Reference numeral 25 denotes a foot portion, and leg supports 29 are attached to foot side link members 27, 27 arranged on the left and right sides of the foot portion 25. A footrest portion 31 is connected to the lower end side of each foot side link member 27. Since the footrest 31 is a flip-up type, even if the balance is slightly lost when a force is applied to the foot, the foot does not enter the gap.
As shown in the cross-sectional view of FIG. 1, the footrest 31 is fixed by welding an aluminum thin plate 31 </ b> B onto an aluminum pipe 31 </ b> A formed by an extension of the foot-side link member 27, as shown in an enlarged cross-sectional view. A cushion 31C wrapped with a cover is placed thereon. The lower side of the cushion 31C is a plywood 32A, and a relatively hard sponge material 32B is placed thereon. A hole is made in the aluminum thin plate 31B, and a bolt is inserted into the aluminum thin plate 31B from the lower side. The tip end side is embedded in the sponge 32B of the cushion 31C, and the cushion 31C is fixed on the aluminum thin plate 31B.
Further, as shown in another enlarged view of FIG. 1, each foot side link member 27 is rotatably connected to the frame body 3 via a connection pin 33 at a portion near the upper end.
One frame member extends forward from both the left and right sides of the frame body 3, and a receiving recess 35 is fixed to the tip of the frame member. A portion near the lower end of the foot side link member 27 enters the receiving recess 35 from the front side and is received.

Reference numeral 37 denotes an armrest portion, and the armrest portion 37 is provided on each of the left and right sides of the seat portion 11.
As shown in FIG. 4, the armrest portion 37 is composed of a storage box 39 that extends relatively long in the front-rear direction and a lid 41 with a flat top surface that closes the upper opening, and is attached to the outside in the left-right direction. The lid 41 is connected to the storage box 39 by the hinge 43. The armrest portion 37 has high strength due to the structure described above. The armrest portion 37 has a relatively large left and right width dimension on the front side, so that the entire front of the elbow of the wheelchair user can be stably placed.
Since the armrest portion 37 has a structure that can be stored as described above, the armrest portion 37 is useful as a storage place for small articles such as glasses, medicines, and cosmetics.
The armrest portion 37 serves as a part of the link mechanism on both the left and right sides.
As shown in FIG. 5, the front side of the storage box 39 is rotatably connected to the upper end side of the foot side link member 27 via a connection pin 45.

Reference numeral 47 denotes a backrest portion, and a backrest seat 51 is attached to the backrest side link members 49, 49 arranged on the left and right sides of the backrest portion 47. A headrest pillow 53 is fixed to the backrest sheet 51 at a site where the head hits.
A lower end side of each backrest side link member 49 is rotatably connected to the frame body 3 via a connecting pin 55.
As shown in FIG. 5, the armrest portion 37 is connected to the backrest side link member 49, and the rear side of the storage box 39 is rotated via the connecting pin 57 at a position near the backrest side link member 49 and its lower end. It is connected freely.
The armrest portion 37 is stably positioned on both the left and right sides of the seat portion 11 by this connection structure.

As described above, a link mechanism is configured on both the left and right sides of the seat portion 11, and the foot side link member 27 and the backrest side link member 49 are rotatably supported with respect to the frame body 3. The link member 27 to the storage box 39 (armrest portion 37) to the backrest side link member 49 are rotatably connected.
Accordingly, the front and rear foot portions 25 and the backrest portion 47 are aligned with respect to the seat portion 11 (the frame body 3), so that it can be in the state of a chaise longue in a straight line as viewed from the side. It is also free to do. That is, a reclining function is provided.

1 and 2 show the standing posture. In order to maintain the standing posture, the above-described link mechanism locking means is provided.
The locking means regulates the counterclockwise rotation of one leg-side link member 27 with respect to the frame body 3. In FIG. 1, reference numeral 59 denotes a connecting piece, which is fixed to the frame body 3 and extends toward the foot side link member 27. A cylindrical guide 61 is fixed to the extending portion of the connecting piece 59 in a state of penetrating in the axial direction. The guide 61 does not mean a narrowly defined cylinder, but includes a fixing fitting such as a nut.

  Two types of notches are formed inward from the end surface of the guide 61 on the outer side. These are fitting recesses 63 and 65. The fitting recess 63 has a tongue-like shape, extends in the axial direction, and has a semicircular arc shape at the back end of the cut. A pair of fitting recesses 63 are formed to face each other in the diameter direction. The fitting recess 65 has an arc shape shorter than the semicircular arc. A pair of fitting recesses 65 are also formed opposite to each other in the diameter direction, and the adjacent fitting recesses 63 and the fitting recesses 65 are shifted by 90 °.

Reference numeral 67 denotes a cylindrical grip portion, and one end side in the axial direction is closed as a top portion. And the unevenness | corrugation 69 is formed in the outer periphery of the top part side so that it may be easy to grasp with a finger.
A tongue piece 71 is connected to the other end side of the grip portion 67. The tongue piece 71 extends axially forward. A pair of tongue pieces 71 are formed facing each other in the diameter direction.
The locking means having the above outer shape has a configuration shown in FIG.
An advance / retreat shaft 73 is fixed to the center of the grip portion 67 in the axial direction. The advance / retreat shaft 73 extends beyond the other end of the grip portion 67.

The grip portion 67 is located coaxially with respect to the above-described guide 61 from the outer side of the penetration, and the advance / retreat shaft 73 enters the guide 59.
When the tongue piece 71 on the gripping portion 67 side is fitted into the fitting recess 63 on the guide 61 side, the gripping portion 67 comes closest to the guide 61 and the edges of each other come into contact with each other. At this time, the advancing / retracting shaft 73 protrudes greatly from the end portion on the inner side of the guide 61.
On the other hand, when the tongue 71 on the grip portion 67 side is fitted in the fitting recess 65 on the guide 61 side, the grip portion 67 is separated from the guide 61 and the edges of each other do not contact each other. At this time, the advancing / retracting shaft 73 slightly protrudes from the inner end of the guide 61.
Since the advance / retreat shaft 73 is elastically urged in the extension direction by a spring (not shown) in the guide 61, the above-described fitted state is stably maintained.
When the gripping portion 67 is moved away from the guide 61 against the biasing force of the spring, it is released from any of the fitting states. By changing between 65 and 65, the extension degree of the advance / retreat shaft 73 can be changed.

Reference numeral 75 denotes a latching piece. The retaining piece 75 is fixed to the foot side link member 27. The hooking piece 75 is disposed on the inner side with respect to the connecting piece 59 described above, and the plate surfaces are opposed substantially parallel to each other with a slight gap therebetween.
As shown in FIG. 5, the latching piece 75 is formed with a latching recess 77 by notching the edge. In this latching recess 77, when the gripping portion 67 side is in a fitted state with the fitting recess 63 and the advance / retreat shaft 73 advances to the maximum and protrudes from the guide 61, the advance / retreat shaft 73 is latched, The locked state is established and the counterclockwise rotation is restricted.

FIG. 6 shows the latched state from the side. In the (A) direction, the fitting recess 63 can be seen in front, and in the (B) direction, the fitting recess 65 can be seen in front.
FIG. 6A shows a locked state (the tongue 71 is fitted in the fitting recess 63). The advancing / retracting shaft 73 protrudes greatly beyond the latching piece 75 and is latched by the latching recess 77.
FIG. 6 (2) shows a state in which the grip portion 67 has been retracted to release the fitting for switching.
FIG. 6 (3) shows an unlocked state. The tip of the advance / retreat shaft 73 is in front of the hooking piece 75. Even in the unlocked state, the tongue piece 71 is fitted in the fitting recess 65, so that it does not rotate even if the gripping portion 67 accidentally hits the periphery.

  The connecting piece 59 is also used as an attachment part of the connecting pin 33 for rotating connection of the foot side link member 27 with respect to the frame body 3, and is therefore arranged on the left and right sides of the seat portion 11.

Reference numeral 79 denotes a gas spring. The upper end side of the gas spring 79 is rotatably connected to the backrest side link member 49, and the lower end side is rotatably connected to the frame body 3.
This gas spring 79 is mounted on the link mechanism side provided with the locking means described above. This elastic urging force acts in a direction to maintain the backrest 47 in a standing posture.
The gas spring 79 may be mounted on the side without the link mechanism, or may be mounted on both sides in order to increase the biasing force.

In the locked state, the foot 25 side hangs down due to its own weight, is received by the receiving recess 35 and is prevented from rotating clockwise, and the backrest 47 side is in an upright state. 1 and 2 show this state.
On the other hand, when the unlocked state is established, the link mechanism can be moved, and when the backrest portion 47 is tilted, the foot portion 25 is lifted.

The wheelchair 1 has the above-described configuration, and as shown in FIG. 7, the wheelchair 1 can sit on the seat 11 and perform the excretion as it is.
As shown in FIG. 8, the wheelchair 1 (the seat 11 is not shown for the convenience of visual recognition) is caused to travel back, and the horizontal portion of the frame body 3 hits the inclined portion on the rear side of the toilet bowl (B). Back up. At this time, as shown in FIG. 9 (only the seating surface 13 of the seating portion 11 is shown for convenience of viewing), the hole 15 of the seating surface 13 is just above the opening of the toilet bowl (B). The hole 15 is designed so that the crotch hits when sitting normally on the wheelchair 1, so if you back to this position, the state where you sat on the wheelchair 1 is when you hit the buttocks on the toilet (B) It will be in the same state.
Therefore, at this position, the cushion piece 19 is removed, the underwear and trousers are lowered, excreted, the underwear and trousers are raised, and finally the cushion piece 19 is attached again, so that a series of actions associated with excretion can be performed without transfer operation. You can do everything. The cushion piece 19 is attached / detached and the underwear is raised / lowered while floating one side of the waist, but since the entire part of the elbow can be placed on the armrest 37 and pressed, the center of gravity can be utilized by using the armrest 37. Can be lifted to easily float one waist. Moreover, since the footrest part 31 is a flip-up type, it does not come off the footrest part 31 even if the foot moves when the waist is lifted.

In addition, when the unlocked state as described above is set, reclining is possible, and as shown in FIG. 10, when the backrest portion 47 is tilted, the foot portion 25 is raised and a chaise longue state is obtained. Since the backrest portion 47 falls against the urging force of the gas spring 79, the backrest portion 47 gradually falls down. When the backrest portion 47 is inclined to a certain degree, the backrest portion 47 becomes a chaise longue and can take a nap in an easy posture. Therefore, when you are tired and want to take a nap, you no longer need to return to your bed. That is, also in this case, a transfer operation with a particularly large burden on the assistant is not necessary.
Since the storage box 39 of the armrest portion 37 is substantially horizontal even in this state, even if it is in a chaise longue, the stored item does not jump out.

  Moreover, as shown in FIG. 11, the footrest 31 can be lifted up and the footrest can be enjoyed by putting the tip of the foot into the container (Y) placed in front while holding the footrest 31 with its own foot. .

As mentioned above, although the embodiment of the present invention has been described in detail, the specific configuration is not limited to this embodiment, and even if there is a design change without departing from the gist of the present invention, the invention can be devised. included.
In addition, although explanation was abbreviate | omitted, what was normally equipped in the existing wheelchair, such as a brake, a grip, and a seatbelt, is similarly equipped in the wheelchair of this invention.

DESCRIPTION OF SYMBOLS 1 ... Wheelchair for self-propelled 3 ... Frame body 5 ... Drive wheel 7 ... Grip ring 9 ... Swivel small wheel 11 ... Seat part 13 ... Seat surface 15 ... Hole 17 ... Cushion part 19, 21, 23 ... Cushion piece 25 ... Foot part 27 ... Leg side link member 29 ... Leg support 31 ... Side-lifting type footrest 33 ... Connection pin 35 ... Receiving recess 37 ... Armrest 39 ... Storage box 41 ... Lid body 43 ... Hinge 45 ... Connection pin 47 ... Backrest Portion 49 ... Backrest side link member 51 ... Backrest sheet 53 ... Pillow portion 55 ... Connection pin 57 ... Connection pin 59 ... Connection piece 61 ... Guide 63, 65 ... Fitting recess 67 ... Grabbing portion 69 ... Concavity / convex 71 ... Tongue piece 73 ... Advancing and retracting shaft 75 ... Hanging piece 77 ... Hanging recess 79 ... Gas spring B ... Toilet bowl Y ... Container

Claims (6)

A seat portion including a seat surface with a hole, and a cushion portion that is placed on the seat surface and surrounds the hole, the cushion portion being detachable with respect to the remaining portion;
Armrests that are firmly fixed to the left and right sides of the seat, extend long in the front-rear direction, and serve as a storage box with a flat top surface;
With a backrest with a reclining function that falls backwards,
By supporting the armrest, floating the waist, opening the hole in the seating surface, it becomes possible to excrete using the hole while sitting on the seat,
A self-propelled wheelchair that makes it possible to take a nap in an easy posture by defeating the backrest. In the self-propelled wheelchair according to claim 1,
The foot part is connected to the backrest part via a link mechanism so as to be interlocked. When the backrest part is rotated with respect to the seat part by the reclining function, the foot part is also in the same direction with respect to the seat part. A self-propelled wheelchair characterized by rotating to change the backrest and the foot from a posture close to a normal chair to a posture close to a straight line in a side view. In the self-propelled wheelchair according to claim 2,
The link member of the link mechanism is provided with a latching recess, and an operation part having an advance / retreat axis is provided on the fixed frame side that supports the seat part,
When the advance / retreat shaft advances and is latched in the latch recess, the link mechanism is locked, and when the advance / retract axis is retracted and the latch is released, the link mechanism is unlocked. A self-propelled wheelchair characterized by In the self-propelled wheelchair according to claim 2 or 3,
A gas spring is interposed between one link member of the link mechanism and the side of the fixed frame that supports the seat portion, and the state before the rotation is restored by the elastic biasing force of the gas spring. A self-propelled wheelchair. In the self-propelled wheelchair according to any one of claims 1 to 4,
A self-propelled wheelchair characterized by a removable cushion part. In the self-propelled wheelchair according to any one of claims 1 to 5,
A self-propelled wheelchair characterized in that the footrest is a flip-up type.

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