KR20040014176A - A wheel chair - Google Patents

Abstract

PURPOSE: To provide a wheelchair equipped with a device for overcoming obstacles which can easily overcome obstructions such as bumps or the like while moving. CONSTITUTION: The wheelchair has the device for overcoming obstacles comprising a supporting frame disposed on a pivotally connected rectangular link, an auxiliary wheel frame, an operating frame, a connecting frame and an elastic body. The elastic body urges the auxiliary wheel frame to be pulled up to the upward direction, auxiliary wheels rotationaly move to the side of front wheels with downward or upward movement of an operation lever. When the auxiliary wheels engage the ground at the backward of the front wheels, with further possible upward movement of the operation lever, the auxiliary wheels rotationaly move to the side of front wheels furthermore and the front wheels move upwardly, higher than the auxiliary wheels.

Description

Wheelchair {A WHEEL CHAIR}

The present invention relates to a wheelchair provided with an obstacle climbing device that can easily ride an obstacle such as a step while driving.

Conventional wheelchairs are generally composed of seats, parking wheels, front wheels, steering wheels, etc., fixed to a pipe-shaped body frame, and can be classified into a guardian operation type and a user operation type. Or it can classify as a user drive type.

The above wheelchairs are all driven on the road, indoors, etc. by the parking wheels and the front wheels in the state of carrying one person, and are made of wheels of small diameter in order to improve steering of the front wheels.

Therefore, when there are obstacles such as a step on the road or indoors, a lot of trouble is taken to ride over them.

As a general method of the obstacle climbing by a wheelchair, a guardian or the like tilts the entire wheelchair to the rear to raise the front wheel to the height of the obstacle, and then moves over the obstacle by advancing the wheelchair. In addition, when the guardian is a weak woman or an elderly person, it is dangerous and difficult to tilt the entire wheelchair backward.

Since such a problem exists in a wheelchair, various proposals have been made in the past. For example, Japanese Unexamined Patent Application Publication No. 8-38552 discloses that the rear wheel is additionally installed at the rear of the parking wheel in addition to the parking wheel and the front wheel, and when the front wheel rides over the obstacle, the rear wheel is operated so that the entire wheelchair is inclined backward. If the inclined amount is inclined, the entire wheel chair is supported by the rear wheel, the front wheel is lifted to the height of the obstacle, and the entire wheelchair is advanced to ride over the obstacle, and then the operation of returning the rear wheel to its original position is performed. It is. Thus, by installing the rear wheel in the wheelchair, the wheelchair is prevented from falling backward when the wheelchair rides over an obstacle.

Further, Japanese Laid-Open Patent Publication No. 59-185159 discloses an auxiliary wheel device in a trolley frame from a front wheel between a front wheel and a rear wheel of a transport cart in a general cart-type transport truck, and when the transport cart rides over an obstacle, the auxiliary wheel By lowering the injured front wheel to devise over the obstacle is disclosed.

In addition, Japanese Laid-Open Patent Publication No. 2001-112837 discloses a wheelchair which can bathe an elderly person, a sick person, an uncomfortable leg person, a person with a disability, a physically disabled person, etc., lying down or sitting, without taking a lot of hands. An invention of a bathing system is disclosed.

The invention disclosed in Japanese Patent Laid-Open No. 59-185159 discloses a wheel for obstacle occupancy in addition to a normal driving wheel and a front wheel, and the front wheel is operated by grounding the wheel for climbing by operating the wheel for climbing. It is designed to allow people to jump over obstacles. In addition, it is necessary to operate the riding wheels both before and after the ride, and the configuration of the operation device itself is complicated, and the operation is cumbersome and the operation is performed when the user himself rides on a wheelchair. This very difficult problem exists.

In addition, the invention disclosed in Japanese Patent Laid-Open No. 2001-112837 discloses that the wheelchair can be moved in a lying state, but the stability thereof is insufficient while the wheelchair is in a lying state, and there is a risk of rolling sideways. In addition, when moving to a bathing car, there may be obstacles such as a step, and in this case, a guardian or the like must conventionally cross the step by injuring the front wheel, and in particular, the wheelchair is in danger of lying down. This is high.

The present invention has been made in view of the above problems, and its object is applicable to any type of wheelchair, regardless of the protector operation type and the user operation type, the power traveling type and the protector or the user drive type. It is to provide a wheelchair equipped with a device that rides over obstacles such as a step characterized in that the operation is very easy.

In addition, by providing the obstacle climbing device of the present invention in the wheelchair of the bathing system disclosed in the above publication, even when the user is lying down, the stability is not lacking and it can be safely moved to the bathing car.

1 is a perspective view of a wheelchair 10a according to a guardian operation type.

2 is a cross-sectional view of II-II of wheelchair 10a.

3 is a cross-sectional view of II-II of the wheelchair 10a in which the auxiliary wheel is grounded.

4 is a cross-sectional view of II-II of the wheelchair 10a in which the front wheels are injured.

5 is a cross-sectional view of II-II of the wheelchair 10a with the auxiliary wheels returned to their original positions.

6 is a sectional view of the wheelchair 10b according to the user operation type.

7 is a cross-sectional view of the wheelchair 10b with the auxiliary wheel grounded.

8 is a cross-sectional view of the wheelchair 10b in a state where the front wheel is injured.

9 is a cross-sectional view of the wheelchair 10b with the auxiliary wheels returned to their original positions.

10 is a perspective view of the wheelchair 10c.

11 is a front view of the wheelchair 10c.

12 is a cross-sectional view of II-II of wheelchair 10c.

13 is a cross-sectional view of II-II of the wheelchair 10c with the auxiliary wheels grounded.

14 is a cross-sectional view of II-II of the wheelchair 10c with the front wheels injured.

15 is a cross-sectional view of II-II of the wheelchair 10c with the auxiliary wheels returned to their original positions.

Fig. 16 is a sectional view of the wheelchair 10d by the user operation type.

17 is a cross-sectional view of the wheelchair 10d with the auxiliary wheels grounded.

18 is a cross-sectional view of the wheelchair 10d in which the front wheels are injured.

19 is a cross-sectional view of the wheelchair 10d with the auxiliary wheels returned to their original positions.

20 is a front view of the wheelchair when the transverse frame can be rotated up and down.

21 is a front view of the wheelchair in a state where the transverse frame is suspended above and below.

22 is a side view of a wheelchair equipped with an obstacle climbing device 50.

23 is a side view of a wheelchair with the pedestal horizontally;

24 is a diagram illustrating an example of a bathtub.

25 is a view showing a wheelchair before a bathtub is introduced.

It is a figure which shows the wheelchair after bathtub introduction.

27 is a sectional view of the bath opening and closing portion.

It is a figure which shows the net of a base.

29 is a sectional view of the bath.

30 is a diagram illustrating an example of a bathing car.

31 is a plan view of the box portion.

It is a side view which shows a box part.

33 is a diagram illustrating another example of a wheelchair.

34 is a detailed view of the slide frame.

35 is a detailed view of the slide section.

36 is a detailed view of the lock lever.

37 is a view showing a hydraulic cylinder.

It is a figure which shows the state which folded the wheelchair provided with the obstacle climbing apparatus.

Fig. 39 is a diagram illustrating an obstacle climbing device.

FIG. 40: is a figure which shows the case where the elastic body 56 is hooked by the pivot point E. FIG.

FIG. 41: is a figure which shows the state in which the elastic body 56 was caught by the pivot point E, and the front wheel floated.

(Explanation of symbols for the main parts of the drawing)

10... Wheelchair 20. Chair frame

25…. 30 handle; Parking wheel

35. Front wheel 40... Seat

45.. Back part 50. Obstacle Rising Device

51. Support frame 52... Operation frame

53. Auxiliary wheel frame 54... Connecting frame

55. Auxiliary wheel 56. Elastomer

60... Transverse frame 65... Cross frame bearing

100... Wheelchair 108, 108 '. Balance

109,109 '... Pedestal 121. tub

157,157 ', 157 "… wheelchair lift 162… front wheel

163. Parking wheel 170... Oil press

180... Wheelchair frame

By the invention described in claim 1,

A wheelchair comprising a chair frame, a handle provided on the chair frame, a pair of parking wheels and front wheels rotatably supported on the chair frame, and an obstacle climbing device installed below the chair frame, wherein the obstacle climbing The device has a support frame, an auxiliary wheel frame, an operating frame, a connecting frame and an elastic body disposed on a quadrilateral link that are pivotally connected to each other, the support frame being vertically supported in a substantially vertical direction with its upper side fixedly supported on the chair frame The operating frame is pivotally attached at a pivot point A at an intermediate position of the support frame, and both end sides are provided as operating levers extending in the front-rear direction, or one end is rearward or front of the chair frame. An operation lever extending in one of the directions, wherein the auxiliary wheel frame faces the operation frame. On the side, the one side is pivoted at the pivot point (B) at the lower end of the support frame, and the auxiliary wheel is pivoted so as to be able to rotate to the other end side extending rearward, and the connecting frame is pivoted at one end. Pivoted to the operation frame at the point (C), the other end is pivoted to the auxiliary wheel frame at the pivot point (D), the elastic force exerts a force to pull up the auxiliary wheel frame upwards, the auxiliary wheel Is rotated to the front wheel side by moving downward or upward of the operation lever and landed on the rear of the front wheel, and then further rotates the operation lever to the front wheel side by further lowering or moving the operation lever to the front wheel side. It is a wheelchair that is injured above the wheel.

The invention described in claim 2,

A chair frame, a handle provided on the chair frame, a pair of parking wheels and a front wheel supported to pivot on the chair frame, an obstacle climbing device provided on the lower part of the chair frame, and the chair frame in a horizontal direction A wheelchair having a transversal frame, wherein the obstacle climbing device has a support frame, an auxiliary wheel frame, an operation frame, a connection frame, and an elastic body disposed on a quadrilateral link that are pivotally connected to each other, and the support frame has an upper side thereof. It is supported by the transverse frame and is installed vertically in a substantially vertical direction, and the operation frame is pivotally attached at pivot point A at an intermediate position of the support frame, and both ends are operated levers extending in the front-rear direction, Or, one end side is provided with an operation lever installed to either one of the rear or front of the chair frame The auxiliary wheel frame is on the side opposite to the operation frame so that one end side pivots at the pivot point B on the lower end side of the support frame and is rotatable on the other end side extending rearward. The wheel is pivoted, the connecting frame is pivotally attached to the operation frame at one end of the pivot point C, the other end is pivotally attached to the auxiliary wheel frame at the pivot point D, and the elastic body is the auxiliary wheel frame. To raise upwards, the auxiliary wheel rotates to the front wheel side by moving downward or upward of the operation lever and lands on the rear of the front wheel, and then moves the operation lever further downward or upward to move the front lever. It is a wheelchair which further rotates to the wheel side and floats the said front wheel upwards than the said auxiliary wheel.

In general, the front wheel is a wheel of a relatively small diameter because it is important to the steering of the wheelchair, it is difficult to ride over the obstacle. Therefore, according to the invention of Claims 1 and 2, when the wheelchair is in contact with the obstacle, the user or guardian can ground the auxiliary wheel to float the front wheel so that the obstacle can be easily carried over.

The invention described in claim 3,

The obstacle climbing device has the pivot point more than the imaginary line α connecting the pivot point A and the pivot point B in a state where the auxiliary wheel is grounded and the front wheel is floating. A virtual line β connecting (A) and the pivot point D or a virtual line γ connecting the support frame or the transverse frame and the pivot point D is a wheelchair positioned forward. .

According to the invention of claim 3, it is possible to maintain the injured state without grounding the auxiliary wheels before passing the obstacles, to avoid friction caused by the grounding of the auxiliary wheels, and to consume the user or guardian when driving the wheelchair. Feel the energy. In addition, after passing the obstacle, the auxiliary wheel automatically returns to its original position due to the change in the direction of tension of the elastic body, and the wheelchair can be smoothly driven after the obstacle climbs. That is, the user or guardian does not have the trouble of returning the obstacle climbing device to the original position.

The invention described in claim 4,

The operation lever installed in the rear is a wheelchair having a foot portion.

The invention described in claim 5,

The operation lever extended forward is a wheelchair located in front of the seat below.

According to the invention of claim 4 and claim 5, the protector can be injured by the foot by the user by using the operation lever to easily ground the auxiliary wheel of the obstacle climbing device.

The invention according to claim 6,

The operation lever extending forward is a wheelchair in which an elastic body is mounted, and a grip portion is installed at one front end of the operation lever, and the grip portion can be stretched by attaching the elastic body to the grip portion.

If the operation lever is present in front of the wheelchair, there is a possibility of contact with the foot of the user seated in the seat. In this case, by allowing the operation lever to be stretched as shown in claim 6, the operation lever can be extended forward from the seat of the wheelchair only when necessary to ride over an obstacle, so that the user can use the operation lever. It can be reduced to the position where it is not.

The invention according to claim 7,

The auxiliary wheel frame is a wheelchair having a plurality of pivot holes, and the pivot point B and the pivot point D are provided in any one of the pivot holes.

According to the invention of claim 7, the lengths of the pivot point B and the pivot point D can be adjusted, and it is possible to adjust how much the front wheels are raised.

The invention according to claim 8,

The wheelchair is joined to one end of either side of the traverse frame so that the traverse frame can be rotated in the up and down direction, and further includes a traverse frame pivot that is joined to the left and right sides of the chair frame, and the traverse frame pivot. It is a wheelchair which is joined in the opposite position to the chair frame to which the part is joined and which has a cross frame bearing part which can be engaged with the other end of the said cross frame.

The invention according to claim 9,

The transverse frame may include a pivot joint rotatably joined to the traverse frame pivot; An obstacle climbing device joining unit joined to the support frame of the obstacle climbing device and having an L-shaped moving groove; And a transverse frame coupling portion which is engageable with the transverse frame bearing portion and part of which is inserted in the obstacle climbing device joint, and which has an extension pin joined to the transverse frame coupling portion in the moving groove, An elastic body is mounted inside the ascending device junction, and this elastic body is mounted on the transverse frame coupling portion, and the transverse frame coupling portion moves left and right along the moving groove by the left and right movement of the extension pin.

According to the invention of Claims 8 and 9, the transverse frame can be rotated upward by folding the transverse frame into the engaged state and non-engaged state with the transverse frame bearing portion joined to the chair frame, and the wheelchair can be folded.

The invention described in claim 10,

The chair has a support pin for supporting the traverse frame on the track when the traverse frame is rotated upward by the traverse frame pivot, as a lower portion of the seat in the frame of the chair frame. It is wheelchair bonding to frame.

According to the invention of claim 10, when the wheelchair is folded, the transverse frame can be supported by the support pins. In addition, even when the wheelchair is unfolded, when the obstacle climbing device is not used, the obstacle climbing device can be stored by walking upward with the support pin.

The invention according to claim 11,

The obstacle climbing device has a rotatable groove in which the pivot joining portion has a U-shaped or inverted Ko-shape, the obstacle climbing device joining portion is inserted into the pivot joining portion, and the projection portion joined to the obstacle climbing apparatus joining portion in the rotary groove. The obstacle climbing device is rotatable back and forth along the rotary groove, the obstacle climbing device is a wheelchair that can rotate back and forth.

Folding wheelchairs have a chair structure with a cross structure under the seat. In the case of the wheelchair having such a structure, when the wheelchair is folded, the obstacle climbing device and the cross structure may come into contact with each other so that the wheelchair may not be fully folded, and according to the invention of claim 11, the obstacle climbing device can be rotated forward. In this case, by placing the obstacle climbing device forward, contact with the cross structure can be avoided. Thus, even a wheelchair having a cross structure can fully fold a wheelchair as in the prior art.

The invention according to claim 12,

The elastic body is a wheelchair which is either coil spring or rubber.

The elastic body may be any one as long as it can have a tension between the pivot point (A) and the pivot point (D). However, in consideration of availability, price, and durability, it is preferable to use a coil spring or rubber.

The invention according to claim 13,

A wheelchair comprising a trolley and a pedestal, wherein the trolley comprises the obstacle climbing device according to any one of claims 1 to 12, wherein the pedestal comprises a foot, a seat, and a back, and the pedestal includes the footrest and the foot. It is a wheelchair which can change an angle in the seat part and the connection part of the whole part or a part of the said backrest part, can be fixed at a desired angle, and the whole pedestal can be arranged horizontally.

According to the invention described in claim 13, the angle of the wheelchair can be freely changed, for example, it can be moved as a bed. In addition, when the angle is changed and the obstacle is crossed, the stability is insufficient at the time of running, and there is a risk of rolling horizontally. However, this can be avoided by providing the obstacle climbing device in the wheelchair.

The invention according to claim 14,

The foot is made of a footrest and a footrest, and the back is made of a backrest, a slide stroke part and a headrest mat part, and is a wheelchair in which the pedestal and the cart can be separated.

The invention according to claim 15,

The pedestal is a wheelchair that can move back and forth along the bogie frame.

The invention described in claim 16,

The pedestal is a wheelchair that can move from side to side along a frame installed at right angles to the pedestal on a trolley frame under the pedestal seat.

The invention described in claim 17,

An elevator is provided in the trolley, the front end of the elevator is connected to a slide frame, and the pedestal can move up and down by moving the elevator up and down through the slide frame.

The invention described in claim 18,

The said slide stroke part is a wheelchair which can move back and forth, left and right, front and rear, right and left in the said backrest part.

According to the invention as set forth in any one of claims 14 to 18, the pedestal and the trolley can be separated, moved back and forth, left and right, front and rear and right and left, thereby improving the flexibility of the positional relationship between the pedestal and the trolley.

The invention described in claim 19,

A bath for bathing, the other end of which is arranged to be opened and closed, an introduction member for introducing a support of a wheelchair to the head (front) and the bottom is provided, and a water passage is arranged in the tub, 19. A bath comprising a hot tub from which hot water can be discharged from the inside of the bathtub and a lift placed under the bathtub to enable the movement of the entire bath, and the wheelchair according to any one of claims 13 to 18. It is a bathing system.

The invention described in claim 20,

A bathing car equipped with a bath and a water supplying and discharging device for supplying to the bath, which is transportable, and which is capable of bathing: a box disposed at the rear of the bathing car to be accessible by an introduction member ; A lift for transferring the wheelchair to the bathing car; A wheelchair having one rail at the ceiling of the bathing car and two rails at the bottom of the bath to access the box; And a wheelchair according to any one of claims 13 to 18.

According to the inventions of Claims 19 and 20, a bath tub which can enter a water as it is a wheelchair, and a bathing car provided with the same are possible, and a large work space is provided with a relatively simple facility without requiring a large number of protectors as in the prior art. It is possible to carry the person bathing directly to the bathtub without having to need it.

An example of embodiment of the wheelchair provided with the obstacle climbing apparatus of this invention is demonstrated in detail based on drawing. 1 is a perspective view of a wheelchair 10a according to a guardian operation type, and FIG. 2 is a cross-sectional view of II-II of the wheelchair 10a of FIG. 1.

The wheelchair 10a is pivotally fixed to the chair frame 20 constituting the appearance of the wheelchair, the handle 25 extending upwardly from the chair frame 20 to the rear, and the rear frame lower of the chair frame 20 so as to be rotatable. A pair of parking wheels 30, a pair of left and right front wheels 35 pivotally fixed to the lower portion of the front of the chair frame 20, seat 40 fixed to the upper portion of the chair frame 20, The obstacle backing device 50 provided between the left and right handles 25 and the lower part of the seat part 40 and provided in the frame shape of the chair frame 20 is comprised. In the present embodiment, since the obstacle climbing device 50 is provided in the wheelchair 10a having the simplest structure, the parts constituting the wheelchair 10a other than the obstacle climbing device 50 will be described. It is good to have structure. Therefore, needless to say, for example, the handle 25 may swing up and down, and an additional function may be provided in the wheelchair 10a, such as a device for adjusting the height of the handle. .

The obstacle climbing device 50 is mounted to the support frame 51 which is lower than the seat 40 and vertically installed in the frame shape of the chair frame 20 so as to be oriented substantially vertically. Four frames including the support frame 51 have a quadrilateral pivotal connection (hereinafter, a quadrilateral link).

That is, a quadrilateral link pivotally connecting four frames is more than an operation frame 52 having one end pivoted to a pivot point A of the support frame 51 and a pivot point A of the support frame 51. The auxiliary wheel frame 53, one end of which is pivoted to the lower pivot point B, and one end of the auxiliary frame, 53, the pivoting point C of which is attached to the operation frame 52. In addition to being formed by a connecting frame 54 pivotally attached to the pivot point (D), the pivot points (A, B, C, D) are pivotally fixed so as to be able to rotate with a bolt or the like, respectively. Therefore, the shape of the quadrilateral of the quadrangle link is deformable. In addition, the connecting frame 54 has both ends of the pivot point (C) and the pivot point (D), but not both ends, the pivot point (C) and pivot point (D) is installed on the connection frame 54 It is good to have.

At least one auxiliary wheel 55 is pivotally fixed to the auxiliary wheel frame 53 so as to be rearward from the pivot point D. FIG.

Further, at one end behind the pivot point C of the operation frame 52, a footrest portion 52a is provided for allowing the guardian to operate the obstacle climbing device 50.

In addition, an elastic body 56 is interposed between the pivot point A and the pivot point D, and a force is applied to the pivot point D to approach the pivot point A. And the rear of the auxiliary wheel frame 53, that is, the footrest portion 52a and the auxiliary wheel 55, are operated upward. The operation frame 52 is appropriately hung on the chair frame 20 so as not to rise more than a predetermined level in the raised position. The elastic body 56 may be any material having elasticity such as coil springs or rubber, but coil springs and rubber are easily available and suitable for durability.

In addition, a plurality of pivot holes 53a are drilled in the auxiliary wheel frame 53, and the movement trajectory of the auxiliary wheels 55 can be changed by selecting and pivoting the positions of the pivot point D and the auxiliary wheels 55. FIG. You may be.

As a matter of course, since the auxiliary wheels 55 are grounded, the front wheels 35 are floated, and as shown in FIG. 2, the distance L ₁ of the vertical line to the ground from the pivot point B and the pivot point B are as shown in FIG. 2. The relationship between the distance L ₂ from)) to the outer diameter of the auxiliary wheel is L ₁ <L ₂ .

EXAMPLE

Next, the operation state of the wheelchair 10a provided with the obstacle climbing device 55 will be described. Before using the wheelchair 10a, the obstacle climbing device 50 is provided under the seat 40 and in the frame shape of the chair frame 20.

The user of the wheelchair 10a is seated on the seat 40, and the guardian is located at the rear of the wheelchair 10a to grasp the handle 25 to push the wheelchair 10a to travel.

In the traveling process of the wheelchair 10a, as shown in FIG. 2, the front wheel 35 may contact the step part Z. As shown in FIG. In this case, since the front wheel has a small wheel diameter, the front wheel may not easily ride depending on the height of the step portion Z.

In such a case, the guardian lowers the operation frame 52 by rotating the footrest portion 52a of the operation frame 52 downward with the foot or the hand. With the lowering of the operating frame 52, the pivot point C is lowered, and the pivot point D is also lowered, thereby lowering the auxiliary wheel 55 provided in the auxiliary wheel frame 53. The auxiliary wheel 55 is grounded by the lowering of the auxiliary wheel 55. The figure in this case is shown in FIG.

In this grounded state, the auxiliary wheels 55 are grounded and the front wheels 35 are raised by further pressing the footrest 52a of the operation frame 52 downward to rotate. At this time, the wheelchair 10a is inclined rearward appropriately, so that the front wheel 35 is slightly lifted, so that the operation frame 52 is easily pushed downward, and the injury to the height of the step portion Z of the front wheel 35 is easy. Let's do it.

In this way, by pressing the footrest portion 52a downward, the front wheel 35 rises above the step portion Z, and the wheelchair 10a is supported by the parking wheel 30 and the auxiliary wheel 55 in a state. do. The figure in this case is shown in FIG.

Moreover, in the state where the front wheel shown in FIG. 4 floats, the pivot point D of a quadrangle link is located below, and is ahead of the virtual line which connects pivot point A and pivot point B. Moreover, in FIG. It is fixed by walking so as to be located on the right side in the cross section. Therefore, in the virtual line β connecting the pivot point A and the pivot point B and the virtual line β connecting the pivot point A and the pivot point D, the virtual line β is the virtual line. It is located in front of (alpha) ahead (right side in sectional drawing). In this state, the obstacle climbing device 50 is prevented from returning to the state shown in FIG. 2 by the elasticity of the elastic body 56 connecting the pivot point A and the pivot point D. FIG.

In the state of FIG. 4, when the wheelchair 10a is further pushed forward, the auxiliary wheel 55 is prevented from moving forward by the step portion Z, and the auxiliary wheel 55 acts to move backward. That is, at the moment when the pivot point D becomes the virtual line α (that is, the virtual line β becomes behind the virtual line α) (left side in cross section), it is accompanied by a change in the direction of the tension of the elastic body 56. The obstacle climbing device 50 automatically returns to the rear side. In addition, the front wheel 35 is grounded at the upper portion of the step portion Z, and the auxiliary wheel 55 is in a state of being separated from the ground. This state is shown in FIG.

In addition, when the wheelchair 10a is pushed forward to move forward, the parking wheel 30 comes into contact with the stepped portion Z, but the parking wheel 30 has a larger wheel diameter than the stepped portion Z, and thus the stepped portion Z You can easily ride over and move forward.

As described above, when the passenger rides over the step portion Z with the wheelchair 10a, the guardian simply pushes the footrest portion 52a of the operation frame 52 downward to easily ride the obstacle without any subsequent operation. Will be.

That is, the downward press of the auxiliary wheel 55 of the obstacle climbing device 50 is operated by the guardian or the hand, but the downward press of the auxiliary wheel 55 after the obstacle is crossed is automatically controlled by the tension of the elastic body 56. This can be done.

Example 2

Next, the case of the wheelchair 10b by a user operation type is demonstrated. 6 to 9 are cross-sectional views of the wheelchair 10b. The wheelchair 10b has the first embodiment and the same except that the operation lever 52b is disposed at the lower front part of the seat 40 so that the user can operate the obstacle climbing device 50 while seated on the seat 40. The configuration is the same. In some cases, however, the footrest portion 52a may not be provided at the rear end of the pivot point C of the operation frame 52.

The operation lever 52b is formed integrally with the operation frame 52 or is integrally joined to the operation frame 52. In the traveling process of the wheelchair 10b, as shown in FIG. 6, the front wheel 35 may contact the step part Z. In this case, since the front wheel is small, the wheel may not easily ride depending on the height of the step portion Z. In this case, the user seated on the seat 40 extends the hand downwards, pulls up the operating lever 52b upwards, and moves the center of the user himself slightly to the rear, as shown in FIG. 7. 55 is grounded. In this state, when the operation lever 52b is further pulled upward, as shown in FIG. 8, the front wheel 55 is in a state where the height of the step portion Z rises.

In the state shown in Fig. 8, the user seated on the seat 40 rotates the operation hand mounted on the side of the outer circumference of the parking wheel 30 to advance the wheelchair 10b so that the auxiliary wheel 55 Since the advance is prevented by the stepped portion Z, it acts to move relatively backwards. That is, at the moment when the pivot point D becomes the virtual line α (that is, the virtual line β becomes behind the virtual line α) (left side in cross section), it is accompanied by a change in the direction of the tension of the elastic body 56. The obstacle climbing device 50 automatically returns to the rear side. In addition, the front wheel 35 is grounded at the upper portion of the step portion Z, and the auxiliary wheel 55 is in a state of being separated from the ground. This state is shown in FIG.

In addition, when the wheelchair 10b is pushed forward to move forward, the parking wheel 30 comes into contact with the stepped portion Z, but the parking wheel 30 has a larger wheel diameter than the stepped portion Z, so the stepped portion Z You can easily ride over and move forward.

In addition, in the operation lever 52b, a user's grip portion 52c (FIG. 6) is provided, the grip portion 52c can be stretched and stretched, and the grip portion 52c is provided in the operation lever 52b. By constructing a structure that resists and stretches the elastic body 52d such as coil springs or rubbers mounted therein, the operation lever 52b is extended to facilitate the operation by extending the gripping portion 52c. When the hand is removed from the gripping portion 52c at the time point, the gripping portion 52c is automatically compressed by the tension of the elastic body 52d to return to its original state. By setting it as such operation lever 52b, it becomes possible to prevent the operation lever 52b which protrudes to the front part not to disturb a user.

Example 3

When the obstacle climbing device 50 is mounted on the wheelchair 10a and the wheelchair 10b, the support frame 51 is installed downward from the seat 40, and the obstacle climbing device 50 is mounted thereon. In the case of the wheelchair having such a configuration, the seat 40 is required to be made of a hard material such as plate, iron, aluminum, etc. because of the necessity that the seat 40 and the support frame 51 are joined. In addition, in a normal wheelchair, the back portion 45 and the seating portion 40 may be made of fabric or the like in order to improve the comfort when seated or on the occasion of folding. In such a case, it is difficult to provide the support frame 51 under the seat portion 40 as shown in the first and second embodiments.

Therefore, in this embodiment, the case where the obstacle climbing device 50 is mounted on the wheelchair 10c in the case of the seat portion 40c and the backrest portion 45c, which is made of a soft material such as fabric, will be described. 10 is a perspective view of the wheelchair 10c in the case where the support frame 51 which is lower than the seat 40c and fixed in the frame shape of the chair frame 20 in the longitudinal direction cannot be mounted. 11 is a front view of the wheelchair 10c.

The wheelchair 10c is pivotally fixed to the chair frame 20 constituting the outline of the wheelchair, the handle 25 extending upward from the chair frame 20 to the rear, and pivotally fixed to the rear of the rear of the chair frame 20. It consists of a pair of parking wheels 30, a pair of left and right front wheels 35 pivotally fixed below the front part of the chair frame 20, and a soft material such as a fabric provided on the chair frame 20. Obstacles 45c made of a soft material such as a fabric provided between the seat portion 40c, the left and right handles 25, and a lower portion of the seat portion 40c and provided in a frame shape of the chair frame 20. It consists of a climbing device 50 and a transverse frame 60. It is sectional drawing of II-II of the wheelchair 10c in FIG.

The transverse frame 60 is arrange | positioned inside the frame of the chair frame 20 in the horizontal direction, and it is preferable to be joined to the front side.

The obstacle climbing device 50 is attached to the transverse frame 60, and the support frame 51 is joined to the transverse frame 60. In addition, the obstacle climbing device 50 has four frames including the support frame 51 is a quadrilateral link. Since this quadrilateral link is the same as that of Example 1 and Example 2, description is abbreviate | omitted. That is, the support frame 51, the operation frame 52, the auxiliary wheel frame 53 and the connecting frame 54, and the elastic body 56 between the pivot point (A) and pivot point (D) Is jammed.

Next, the operation mode of the guardian operation type of the wheelchair 10c provided with the obstacle climbing device 50 will be described. Before using the wheelchair 10c, the transverse frame 60 is disposed in the frame shape of the chair frame 20 and is lower than the seat 40c, and the obstacle climbing device 50 is bonded to the transverse frame 60. do.

The user of the wheelchair 10c is seated on the seat 40c, and the guardian is located at the rear of the wheelchair 10c to grasp the handle 25 to push the wheelchair 10c to travel.

In the running process of the wheelchair 10c, the front wheel 35 may contact the step part Z as shown in FIG. In this case, since the front wheel has a small wheel diameter, the front wheel may not easily ride depending on the height of the step portion Z.

In such a case, the guardian lowers the operation frame 52 by rotating the footrest portion 52a of the operation frame 52 downward by pressing the foot or hand. Along with the lower side of the operation frame 52, the pivot point C falls, and the pivot point D also falls. Therefore, the auxiliary wheel 55 provided in the auxiliary wheel frame 53 also descends. The auxiliary wheels 55 are grounded by the lowering of the auxiliary wheels 55. The figure in this case is shown in FIG.

In this grounded state, the auxiliary wheels 55 are grounded and the front wheels 35 are raised by further pressing the footrest 52a of the operation frame 52 downward to rotate. At this time, the wheelchair 10c is properly inclined rearward so that the front wheel 35 is slightly lifted, so that the operation frame 52 can be easily pushed down, and the injury to the height of the step portion Z of the front wheel 35 is easy. Let's do it.

In this way, by pressing the footrest portion 52a downward, the front wheel 35 rises above the step portion Z, and the wheelchair 10c is supported by the parking wheel 30 and the auxiliary wheel 55. do. The figure in this case is shown in FIG.

Moreover, in the state where the front wheel shown in FIG. 14 floats, the pivot point D of a quadrilateral link will be in the state located downward, and is ahead of the virtual line which connects pivot point A and pivot point B. Moreover, in FIG. It is fixed by walking so as to be located on the right side in the cross section. Therefore, in the virtual line α connecting the pivot point A and the pivot point B and the virtual line β connecting the pivot point A and the pivot point D, the virtual line β is the virtual line. It is located in front of (alpha) ahead (right side in sectional drawing). In this state, the obstacle climbing device 50 is prevented from returning to the state shown in FIG. 12 by the tension of the elastic body 56 connecting the pivot point A and the pivot point D. FIG.

In the state of FIG. 14, when the wheelchair 10c is further pushed forward, the auxiliary wheel 55 is prevented from moving forward by the step portion Z, and the auxiliary wheel 55 acts to move backward. That is, at the moment when the pivot point D becomes the virtual line α (that is, the virtual line β becomes behind the virtual line α) (left side in cross section), it is accompanied by a change in the direction of the tension of the elastic body 56. The obstacle climbing device 50 automatically returns to the rear side. In addition, the front wheel 35 is grounded at the upper portion of the step portion Z, and the auxiliary wheel 55 is in a state of being separated from the ground. This state is shown in FIG.

In addition, when the wheelchair 10c is pushed forward to move forward, the parking wheel 30 comes into contact with the stepped portion Z, but the parking wheel 30 has a larger wheel diameter compared with the stepped portion Z, so the stepped portion Z You can easily ride over and move forward.

As described above, when the guardian rides over the step portion Z with the wheelchair 10c, the guardian simply pushes the footrest portion 52a of the operation frame 52 downward to easily ride the obstacle without any subsequent operation. Will be.

That is, the downward press of the auxiliary wheel 55 of the obstacle climbing device 50 is operated by the protector by the foot or the hand, but the upper pressing of the auxiliary wheel 55 after the obstacle is crossed by the tension of the elastic body 56 is automatically performed. This can be done.

Example 4

Moreover, since the wheelchair 10c shown in Example 3 is a guardian operation type, the case of the wheelchair 10d by the user operation type when the cross-frame 60 is installed in a wheelchair is demonstrated. 16 to 19 are sectional views of the wheelchair 10d. The wheelchair 10d is the third embodiment except that the operation lever 52b is disposed below the front of the seat 40c so that the user can operate the obstacle climbing device 50 while seated on the seat 40c. The configuration is the same. In some cases, however, the footrest portion 52a may not be provided at the rear end of the pivot point C of the operation frame 52.

The operation lever 52b is formed integrally with the operation frame 52 or is integrally joined to the operation frame 52. In the traveling process of the wheelchair 10d, as shown in FIG. 16, the front wheel 35 may contact the step part Z in some cases. In this case, since the wheel diameter is small, the front wheel may not easily ride over by the height of the stepped portion Z. In this case, the user seated on the seat 40c extends his / her hand downwards, pulls up the operating lever 52b upwards and moves the center of the user himself slightly to the rear, as shown in FIG. 17. 55 is grounded. In this state, when the operation lever 52b is further pulled upward, as shown in FIG. 18, the front wheel 55 is in a state where the height of the step portion Z rises.

In the state shown in Fig. 18, the user seated on the seat 40c rotates the operation hand wheel mounted on the side of the outer circumference of the parking wheel 30 to advance the wheelchair 10d so that the auxiliary wheel 55 Since the advance is inhibited by the stepped portion Z, it acts to move relatively backwards. That is, at the moment when the pivot point D becomes the virtual line α (that is, the virtual line β becomes behind the virtual line α) (left side in cross section), it is accompanied by a change in the direction of the tension of the elastic body 56. The obstacle climbing device 50 automatically returns to the rear side. In addition, the front wheel 35 is grounded at the upper portion of the step portion Z, and the auxiliary wheel 55 is in a state of being separated from the ground. This state is shown in FIG.

In addition, when the wheelchair 10d is pushed forward to move forward, the parking wheel 30 comes into contact with the stepped portion Z, but the parking wheel 30 has a larger wheel diameter compared to the stepped portion Z. You can easily ride over and move forward.

In addition, in the operation lever 52b, a user's grip portion 52c (FIG. 16) is provided, the grip portion 52c can be stretched and stretched, and the grip portion 52c is provided in the operation lever 52b. By constructing a structure that resists and stretches the elastic body 52d such as coil springs or rubbers mounted therein, the operation lever 52b is extended to facilitate the operation by extending the gripping portion 52c. When the hand is removed from the gripping portion 52c at the time point, the gripping portion 52c is automatically compressed by the tension of the elastic body 52d to return to its original state. By setting it as such operation lever 52b, it becomes possible to prevent the operation lever 52b which protrudes to the front part not to disturb a user.

Example 5

In the wheelchair 10c and the wheelchair 10d of the third and fourth embodiments, since the transverse frame 60 is arranged in the frame shape of the chair frame 20 in the transverse direction, the chair frame 20 cannot be folded. By installing the transverse frame rotating part 63 at one end of the left and right to be rotated in the vertical direction with the transverse frame 60, and for coupling the transverse frame 60 to the other end of the chair frame 20 The transverse frame bearing part 65 is installed. The front view of the wheelchair in this case is shown in FIG. In addition, in the frame shape of the chair frame 20, as a lower part of the seating portion 40c, and on the track when the transverse frame 60 is rotated upward from the traverse frame pivot 63, a traverse frame ( 60 support pins 72 are installed. In addition, in the drawing of this specification, when the transverse frame rotation part 63 is provided to the left direction toward the figure, and the transverse frame bearing part 65 is installed to the right direction, it demonstrates, When these are installed to the left and right sides, Naturally, these explanations are also reversed in correspondence.

In addition, the transverse frame 60 is a pivot joint 67 connected to the traverse frame pivot 63, an obstacle climbing device joint 68 joined to the obstacle climbing device 50, and a cross frame bearing. Combination with the section 65 is composed of a cross frame coupling portion 69 that holds the cross frame 60 horizontally. Furthermore, the transverse frame 60 and the transverse frame are mounted by mounting the transverse frame coupling part 69 inside the obstacle climbing device joint 68 and resisting the elastic spring (coil spring or rubber) (not shown). It becomes possible to operate the state in which the bearing part 65 is engaged (coupling state) and the state separated from the coupling (non-coupling state). This operation installs the elongation pin 70 in the transverse frame coupling portion 69, and also installs the moving groove 71 in the obstacle climbing device joining portion 68 to move the elongation pin 70 to the left and right. do. By moving the extension pin 70 to the left and right along the movable groove 71, the transverse frame coupling portion 69 is moved left and right, and the engagement state and the non-engagement state with the transverse frame bearing portion 65 can be manipulated. Will be.

Therefore, in order to pivot upwards in order to fold the horizontal frame 60 held in the horizontal direction, a portion of the transverse frame coupling portion 69 is moved to the obstacle climbing device coupling portion 68 by moving the extension pin 70 to the left. As it is fitted, the length of the transverse frame 60 is temporarily shorter than the width of the wheelchair. By holding the extension pin 70 upward while holding the extension pin 70, the transverse frame 60 rotates upward with the joining point X as the point.

The transverse frame 60 is rotated to the position of the support pin 72 and the transverse frame 60 is fastened upward by the transverse frame coupling portion 69 through the support pin 72. When the transverse frame coupling portion 69 passes through the support pin 72, the transverse frame coupling portion 69 is moved by the action of an elastic body (not shown) by moving the extension pin 70 from the left side to the right side. Returning to the position of the, the transverse frame 60 is also returned to its original length (width of the chair) it is possible to hang the transverse frame 60 with the support pin 72. This state is shown in FIG.

As such, when the wheelchair is folded, the crossing frame 60 is able to fold the wheelchair in order to rotate the junction frame X as a point.

If you want to use the obstacle climbing device 50 in a state where the wheelchair is folded, the above operation may be reversed. That is, since the transversal frame 60 hung on the support pin 72 moves the extension pin 72 to the left side, a part of the transverse frame coupling part 69 is inserted into the obstacle climbing device joint 68. , The length of the transverse frame 60 is shorter than the width of the wheelchair. In this state, the transverse frame 60 is separated from the locking of the support pin 72.

The transverse frame 60 away from the support pin 72 is rotated downward and moved to just before the horizontal position. By moving the extension pin 70 in the left direction, a portion of the transverse frame coupling portion 69 is inserted into the obstacle climbing device joint 68 so that the length of the transverse frame 60 is shorter than the width of the wheelchair. In this state, the transverse frame 60 is moved to a horizontal position, and the transverse frame coupling portion 69 is moved to the right direction by moving the extension pin 70 in the right direction to engage with the cross frame bearing portion 65. Let's do it. As a result, the transverse frame 60 can be kept horizontal. Such operation allows the user or guardian to make the state shown in FIG. 20, and the obstacle climbing device 50 can be used by performing the operation of the third embodiment or the fourth embodiment.

In addition, since only the transverse frame 60 can be rotated up and down by using the junction X of the transverse frame pivot 63 and the pivot joint 67 as a point, the obstacle climbing device 50 is a wheelchair. When folded, it is present at the center or rear of the seat portion 40c. Moreover, in the case of a foldable wheelchair, the chair frame 20 may have the cross structure like FIG. 20 under the seat part 40c. This allows the wheelchair to be folded and to distribute the load such as the weight of the user to the seat 40c and to increase the strength of the wheelchair.

In the case of such a wheelchair, even when the wheelchair is folded, the obstacle climbing device 50 is located at the center or the rear of the lower portion of the seat 40c and overlaps in a cross structure, and may not be fully folded. In such a case, there arises a problem that the wheelchair in the folded state becomes unstable, and that the wheelchair becomes wide when folded.

Therefore, in order to prevent the crossover structure and the obstacle climbing device 50 from overlapping, the obstacle climbing device 50 may be rotated forward. This case will be described next.

The obstacle climbing device 68 of the transverse frame 60 is further inserted into the pivot joint 67, and the obstacle climbing device joint 68 and the transverse frame joint 69 can be rotated back and forth.

In addition, the obstacle climbing device 68 has a protrusion 73, and the rotating joint 67 forms an inverted U-shaped (or U-shaped) rotating groove 74, and the protrusion 73 is the above-mentioned. It is to be able to rotate back and forth along the rotary groove (74). Fig. 39 shows an obstacle climbing device in this case.

When folding the wheelchair, by moving the extension pin 70 to the left side, a part of the transverse frame coupling part 69 is inserted into the obstacle climbing device joint 68, so that the length of the transverse frame 60 is temporarily larger than the width of the wheelchair. It will be short. While holding the extension pin 70 by the user or guardian, the transverse frame 60 rotates upward with the joining point X as the point by lifting the extension pin 70 upward. At this time, the obstacle climbing device junction portion 68 is further rotated backward along the inverted U-shape of the rotary groove 74, so that the protrusion 73 moves along the inverted U-shaped shape of the rotary groove 74, thereby preventing the obstacle multiplier. 50 rotates and moves forward. That is, the obstacle climbing device junction part 68 is shifted to the right direction, and the projection part 73 can move back, At this time, the obstacle containing the auxiliary wheel 55 by rotating the obstacle climbing device junction part 68 backwards. Since the climbing device 50 moves forward, the obstacle climbing device junction 68 moves to the left along the rotary groove 74. As a result, the obstacle climbing device 50 is fixed forward.

After passing through the process described above, the transverse frame 60 rotates upward with the junction point X as a point by pulling the extension pin 70 upward while the extension pin 70 is held by the user or guardian. . The transverse frame 60 rotates to the position of the support pin 72, and the transverse frame 60 is fastened upward by the transverse frame coupling portion 69 through the support pin 72. When the transverse frame coupling portion 69 passes through the support pin 72, the transverse frame coupling portion 69 is moved by the action of an elastic body (not shown) by moving the extension pin 70 from the left side to the right side. The traverse frame 60 also returns to its original length (width of the wheelchair). Therefore, it is possible to hang the transverse frame 60 with the support pin 72. In addition, since the obstacle climbing device 50 is located in the front, the wheelchair can be folded so that it does not come into contact with the structure of the wheelchair, and is the same as the conventional one. The wheelchair in the folded state is shown in FIG.

If you want to use the obstacle climbing device 50 in a state where the wheelchair is folded, the above operation may be reversed. That is, since the transversal frame 60 hung on the support pin 72 moves the elongation pin 72 to the left direction, a part of the transverse frame coupling part 69 is inserted into the obstacle climbing device joint 68, The length of the transverse frame 60 is shorter than the width of the wheelchair. In this state, the transverse frame 60 is separated from the locking of the support pin 72.

The transverse frame 60 away from the support pin 72 is rotated downward and moved to the front of the horizontal position. After moving, the obstacle climbing device joining portion 68 is moved forward along the inverted U-shape of the rotary groove 74 to move the projection 73 along the inverted U-shape of the rotary groove 74, thereby preventing the obstacle multiplier ( 50) rotates backward and moves. That is, since the protrusion 73 can move forward by shifting the obstacle climbing device joint 68 in the right direction, the obstacle climbing device joint 68 is rotated forward. Since the obstacle climbing device 50 including the auxiliary wheels 55 is moved to the rear by rotating forward, the obstacle climbing device joining unit 68 moves to the left along the rotary groove 74. As a result, the obstacle climbing device 50 is fixed to the rear side.

Thereafter, by moving the extension pin 70 to the left direction, a portion of the transverse frame coupling portion 69 is inserted into the obstacle climbing device joint 68 so that the length of the transverse frame 60 is shorter than the width of the wheelchair. In this state, the transverse frame 60 is moved to a horizontal position, and the transverse frame coupling portion 69 is moved to the right direction by moving the extension pin 70 in the right direction to engage with the transverse frame bearing portion 65. Let's do it. Thereby, the transverse frame 60 can be kept horizontal. Such operation allows the user or protector to be in the state shown in FIG. 20, and the obstacle climbing device 50 can be used by performing the operation of the third embodiment or the fourth embodiment.

In addition, in this specification, although the elastic body 56 of the obstacle climbing apparatus is demonstrated when it is hooked on the pivot point A, it connects to not only the pivot point A but the support frame 51 and the transverse frame 60. You may be. This state is shown in FIG. In this case, when the point where the support frame 51 or the transverse frame 60 of the elastic body 56 is hooked is set to the pivot point E and the pivot point D, the front wheel 35 is in a floating state, When the wheel 55 is in contact with the stepped portion Z, the virtual line α connecting the pivot point A and the pivot point B and the virtual point connecting the pivot point E and the pivot point D In the line γ, the virtual line γ is located in front of the virtual line α (right side in cross section). In this state, the obstacle climbing device is prevented from returning to its original state by the tension of the elastic body 56 connecting the pivot point E and the pivot point D. FIG. This state is shown in FIG.

In this state, when the wheelchair is further pushed forward, the auxiliary wheel 55 is prevented from moving forward by the step portion Z, and the auxiliary wheel 55 acts to move backward. That is, at the moment when the pivot point D becomes the virtual line α (that is, the virtual line γ becomes behind the virtual line α) (left side in cross section), it is accompanied by a change in the direction of the tension of the elastic body 56. The obstacle climbing device 50 automatically returns to the rear side. In addition, the front wheel 35 is provided in the upper portion of the step portion Z, and the auxiliary wheel 55 can be in a state away from the ground.

Example 6

In addition, although the obstacle climbing device 50 and the wheelchair provided with the above-mentioned were explained from Example 1 to Example 5, the wheelchair may be used by an elderly person, a sick person, an uncomfortable person, etc. in a sick state. .

It is also one of the problems to bathe such people comfortably without using their hands and using enormous equipment, large costs, etc., and an invention for solving this problem is disclosed in Japanese Laid-Open Patent Publication No. 2001-112837. . The invention disclosed in this publication discloses an upper part of a wheelchair, such as a bed or a stretcher, so that a wheelchair, a bath, and a bath, which can be easily bathed, can be carried back, and a bath can be bathed. It is a bathing system which consists of a combination of these 2 or 3 characters.

Even when using the wheelchair disclosed in the above publication, the movement is necessary, and it is necessary to ride over obstacles such as a step. Therefore, by providing the obstacle climbing device 50 described above from the first embodiment to the wheelchair disclosed in the above publication, it is possible to easily ride the obstacle. In particular, when the user is in a state of looking upwards, such as a bed, it is difficult to ride over the obstacle, so it is very effective to provide the obstacle climbing device 50 of the present invention. Below, the specific example in this case is explained in full detail.

The wheelchair 100 basically consists of a pedestal 109 and a trolley 108. The trolley 108 has a relatively small wheel <front wheel 162> in the front part and a relatively large wheel <parking wheel 163> in the rear part to facilitate the movement, and furthermore, the obstacle climbing device 50 Is equipped. The obstacle climbing device 50 may be mounted as in any of the first to fourth embodiments. That is, when the support frame 51 is joined downward from the pedestal 109 (Example 1 and Example 2), the transverse frame 60 is installed in the trolley 108, and the support frame 51 crosses. Any one of the cases (Examples 3 to 5) may be bonded to the frame 60. The pedestal 109 consists of a foot, a seat portion 106 and a back portion. The foot is composed of the footrest 102 and the footrest 101, and the back is the backrest 104, the slide stroke 103, the headrest mat 105 and, as necessary, the handle portion 107 It is preferable to make. The external appearance is shown in FIG.

Fig. 22 shows a typical form when the wheelchair is used as a normal wheelchair. The wheelchair 100 is composed of a pedestal 109 and a cart 108. The trolley | bogie 108 is shape | molded by connecting the front wheel 162 and the parking wheel 163 with a pipe, a U-shaped frame, etc., mutually. The upper portion 164 on which the pedestal 109 is mounted consists of a U-shaped frame, and the roller 112 installed in the pedestal is inserted into the U-shaped frame, and the pedestal roller 112 moves to move the bogie ( The pedestal 109 itself may be moved on 108. In order to fix the pedestal 109 to the trolley 108, a locking lever 111 is provided at the upper portion 164. Moreover, the roller 117 is provided in the vicinity of the front-end | tip of the backrest part 104. As shown in FIG. This roller is useful when the pedestal 109 of the wheelchair 100 enters the bath 121.

The pedestal 109 is formed of the foot, the seat 106 and the back as described above, the foot is composed of the footrest 102 and the footrest 101, the back portion 104, the handle portion 107, the slide stroke portion 103 and the headrest mat portion 105 is preferable. They can vary in angle at the junctions 113, 114, 115 and 116 of each other and are adapted to lock at the desired angle. Adjustment and fixing of an angle can be performed by the hinge with a locking function, for example. Since the pedestal 109 enters the water during bathing, it is preferable to have a mat on the net to drain water well when coming out of the bath after bathing. Water should fall down between the nets and not remain on the mat. This form is as shown in FIG. It goes without saying that it can also be used as a normal wheelchair having the obstacle climbing device 50 in the form of FIG. 22. At this time, it is possible to sit in a comfortable mood by appropriately placing a cushion or a mat on the pedestal 109.

23 shows a state where the pedestal 109 is horizontal. The slide stroke portion 103 is arranged to be connected to the headrest mat portion 105 and to enter and exit the backrest portion 104 so that the position of the headrest mat portion 105 can be adjusted. The pedestal 109 can move on the bogie 108 through the roller 112 or the like in the bogie 108. It is also possible to use the stand 109 as a lifter in a state where the stand 109 of the wheelchair 100 is leveled. That is, for example, a sick person or a sick person can be conveyed by moving the trolley | bogie 108 in the state lying on the pedestal 109. FIG. Therefore, if there is an obstacle during this movement, it must rely on lifting up the front wheel 162 to ride over the obstacle.

Moreover, it is very difficult to pull up the front wheel 162 in such a state as to lay down such a sick person or a sick person, and since it lacks a sense of stability, it is easy to roll sideways. Thus, by using the obstacle climbing device 50 connected to the trolley 108 in any one of the first to fifth embodiments, it is possible to easily ride the obstacle and to prevent it from rolling laterally. . Since the method of using the obstacle climbing device 50 is the same as in the first to fifth embodiments, description thereof is omitted.

In addition, the slide stroke part 103 is installed in the backrest part 104 so that expansion and contraction is possible, and it can move back and forth. In addition, a groove is formed in a portion of the slide stroke portion 103 connected to the backrest portion 104, and one point can be fastened with a screw or the like to move back, front, left, right, left, and right. The headrest mat portion 105, that is, the slide stroke portion 103, for example, it can be fixed by the locking portion 181 as shown in FIG.

In addition, the backrest 104 of the wheelchair 100 can change the angle depending on the person riding on the pedestal 109 or according to the required work. For example, FIG. 25 shows a state where the wheelchair 100 enters the bathtub. The dotted line shows the state of the backrest part 104 at the time of bathing, and the solid line shows the state of the backrest part 104 before entering a bath. The handle part 107 becomes a handle part at the time of bathing.

Another embodiment of the wheelchair 100 is shown in FIG. 33. This wheelchair configuration basically adds a function to that described in FIG. 22.

The wheelchair 100 'includes a trolley 108' and a pedestal 109 ', and the trolley connects the front wheel 162 and the parking wheel 163 to the wheelchair frame 180, and the wheelchair frame 180 ), The oil press 170 is installed. In addition, the obstacle climbing device 50 is mounted on the wheelchair frame 180 of the cart 108 'similarly to the wheelchair 100. The obstacle climbing device 50 is joined downward from the wheelchair frame 180.

The upper part of the oil pressure machine 170 is connected to the slide frame 171, and the roller 85 provided in the pedestal 109 'enters into this slide frame 171, and the pedestal 109' can move back and forth. . The roller 85 can be fixed by the locking lever 183. Since the oil press 170 is cylindrical in shape, the oil press 170 is disposed in the cylindrical cylinder case 177 to prevent rotation of the hydraulic cylinder. The pedestal 109 'of the wheelchair 100' can be moved up and down by the action of the hydraulic cylinder. The height of the pedestal 109 ′ may be adjusted by the hydraulic lever 178. This is not limited to the oil pressure machine, and it is also possible to use elevating by an electric power such as an electric type elevating machine or by elevating by an attractive force. 37 is an enlarged view of the oil press 170.

The pedestal 109 'consists of the foot, the seat 106 and the back, the foot consists of the footrest 102 and the footrest 101, the back of the back 104, the slide stroke 103 ), The headrest mat portion 105 and the handle portion as necessary. They can be varied in angle at each other's connection point and can be fixed at a desired angle. The headrest mat part 105 can move the slide part 175 (FIG. 35) back and forth and left and right through the slide stroke part 103. FIG. The slide stroke portion 103 can fix the headrest mat portion 105 to a desired position by the slide portion locking portion 181 in the slide portion 175.

The roller 174 is provided in the lower part of the sheet | seat part 106, and the frame which this roller 174 installed in the orthogonal direction to the base 109 'on the bogie slide frame 171 and under the sheet | seat 106 ( By moving along 176, the seat rest can be moved left and right (up and down in the drawing). This part is enlarged and shown in FIG. At this time, a locking lever 179 for locking the left and right movements is provided. The frame 176 is not fixed to the trolley | bogie 108 'nor the pedestal 109' except having fixed the left and right frames by the front and back frame 186, and is supported by the roller 174.

The slide frame 171 is composed of a U-shaped frame, and rollers 182, 184, 185 and the like are installed in the frame, and the rollers are inserted into the U-shaped slide frame 171 to move the frame to the bogie ( 108 'may move the pedestal 109' itself back and forth (left and right in the figure). A locking lever 183 is provided in the trolley 108 'to fix the die support 109' to the trolley 108 '(FIG. 36).

As well as the wheelchair of the embodiment shown in FIG. 33, the use similar to the wheelchair of the embodiment of FIG. 22 is possible. Although the wheelchair shown in FIG. 33 does not show a handle part, it may be provided with a handle part. In addition, in the embodiment shown in FIG. 33, the pedestal 109 ′ can be moved back and forth and left and right. In addition, the pedestal 109 'can be lifted up and down by the oil press 170 and the like, and a wheelchair can be conveniently used. The movement of the pedestal 109 'to the left and right is particularly effective when the wheelchair 100' is moved in a horizontal state to move the sick person or the like from the wheelchair 100 'to the bed or from the bed to the wheelchair 100'. In addition, when there is an obstacle such as a step or a threshold during this movement, it is possible to easily ride over by using the obstacle climbing device 50 mounted on the lower portion of the wheelchair frame 180.

Next, the situation in which the user enters the bathtub while in a wheelchair and bathes afterwards will be described. The person bathing receives the backrest part 104 slightly upward as shown in FIG. 4 in the state lying on the horizontal support | restor, or sitting in a wheelchair, and puts the slide stroke part 103 in the backrest part 104, The position is set downward, and the footrest part 101 and the footrest part 102 are made into the horizontal state. In this state, the bogie is moved to the position of the bathtub.

The outline of the bathtub 121 is shown in FIG. The other end of the bath 121, in this case, is openable to the end in the right direction toward the drawing. The rail 122 is provided in the bottom part of the bathtub 121 one by one from side to side, and the rail 123 is provided in the head part by one from side to side. The left end toward the figure is the head washing machine 138 in which the head of the bathing person is located. Since this part is in a high position, the rail 123 is provided inclined upwardly from the bathtub bottom part. Drainage holes 133 and 132 are formed in the bottom of the bath 121 and the head washing unit 138. It is preferable that the water passage 128 is provided at the center of the side surface of the bathtub 121. Although a rail is used in FIG. 24 when introducing a wheelchair into a bath, not only this but a roller and a groove | channel can also be used.

The water passage 128 is, for example, provided with a stainless steel plate in an L-shape and installed in the bath 121, so that hot water can pass between the stainless steel plate and the bath. The plate is not limited to stainless steel, but may be other metal such as iron or aluminum. The plate also serves as a reinforcement of the bath at the same time. The hot water nozzle 129 is provided in the bathtub in the water passage 128. These are for spraying hot water from the hot water supply nozzle. The situation of the water passage 128 is shown in FIG. In addition, the tub 121 is mounted on the tub lifts 124 and 140 to move the tub.

FIG. 26 shows a state in which a pedestal is introduced into the bath 121. The roller 117 of the pedestal enters the rail 123, and the same roller 112 enters the rail 122, so the pedestal 109 is introduced into the bath 121. The handle 107 is to be gripped by hand when bathing. The trolley 108 is separated from the pedestal 109 to be in a state of waiting under the bath 121. The bathtub 121 is mounted on the lift 124, and can be moved to Shanghai, and adjust the height of the bathtub in accordance with the physique of the person bathing, protector, and makes it easy to work.

The state which opened the bathtub opening-and-closing part 125 is shown to FIG. 27 (A). 27B shows the bottom of the bath 121. Two rails are provided in the bottom of the bathtub 121, and the roller of the base 109 enters the said rail. The tub opening and closing part 125 is opened and closed by the hinge member 131. When closed, rubber packing is applied to the flange 141 surface so as to prevent leakage, and is also locked by the locking member 130.

In FIG. 24, the bathtub opening-closing part 125 is opened, the bathtub 121 is approached with the pedestal 109 mounted on the trolley 108 from the right direction toward the drawing, and only the pedestal 109 is moved in the bathtub. The bogie 108 waits under the bath while bathing. In FIG. 27A, the tub 121 is moved up and down by the tub lift so that the roller 112 of the pedestal 108 on the trolley 109 can move to the rail 122 of the tub 121. By properly moving) to match the positions of the upper portion of the trolley 164 and the rail 122, the pedestal roller 112 can easily move to the bath rail 122 to enter the pedestal 109 into the bath 121. When the rail 122 is positioned at the entrance, that is, the opening and closing part 125 at a position higher than the head washing unit 138, the pedestal 109 can be smoothly introduced into the bathtub.

It is as above-mentioned to put the backrest part 104 in the slightly upward position in putting the pedestal 109 into the bathtub 121 (FIG. 25). The roller 117 provided near the tip end of the backrest part 104 enters the rail 123 and helps the pedestal 109 enter the bathtub. The rails 122 and 123 and the trolley | bogie upper part 164 have a U-shape shape, and the roller 117 enters in a U-shape. However, the rail 123 is L-shaped up to the middle, and the front side is L-shaped, and the roller 117 enters the rail 123 easily. In addition, when the die holder 109 is introduced into the bathtub 121, the handle 107 is reversed to the head washing unit 138 so that the guard member pulls it to further move the pedestal 109. It can be done easily. When the pedestal 109 is introduced into the bathtub 121, the opening and closing part 125 is closed and locked. If necessary, the position of the bath lift is moved to the height of the guardian or the bather and fixed at a position where it is easy to protect. The bogie 108 waits under the tub lift.

In this manner, after the pedestal 109 is introduced into the bath 121, the usual bathing is performed. It is preferable that the person taking the bath grab the handle 107 in order to maintain the stability of the body.

Next, the bath difference will be described. 30 shows an overall view of the bathing car. The bath car 151 is equipped with a bathtub 121, a hot water supply facility, a drainage facility, and also introduces a box 156 and a wheelchair for bathing preparation, such as changing clothes of a bather, into a bathtub 121. It has a wheelchair lift 157 for moving the wheelchair. The box 156 is disposed in-house except when bathing, and is pushed out of the car when bathing. The box 156 is easily moved in and out of the car by rails provided on the floor of the bathing car. In addition to the rail, a rail and a groove can also be used as a rail, and the rail is not limited to a rail. The box 156 is intended to widen the space in the narrow car even a little when bathing. Before the start of bathing, the rear gates 154 and 155 of the car are opened, pushed out of the car, and used as a bath preparation room. Take clothes, change gymnastics and other necessary treatments. In order to facilitate the movement of the box 156, two rails are provided on the floor of the bathing car. In addition, a rail may be installed on the ceiling of the bathing vehicle to assist the movement of the box 156.

A bathing car can carry and move what is necessary for bathing, such as a bathtub, for a person to bathe, and can provide a bathing service at a desired place.

In bathing, first, the rear gates 154 and 155 of the car are opened. The rear gates 154 and 155 may be any one side open or both sides open, but it is preferable that the rear gates 154 and 155 can be rotated 270 degrees in both sides open. After opening the rear gates 154 and 155 of the bathing car, the wheelchair lift 157 is lowered to the wide ground. This state is indicated by 157 "in Fig. 32A. The box 156 is pushed out of the car to increase the space. The rear gate 168 of the box 156 is lifted up to open it. Fig. 32 (A) Shows that the rear gate 168 of the box is raised to 168 ". The wheelchair is moved with the person bathing on the wheelchair lift 157 "lowered to the ground. The wheelchair lift 157" is lifted up to the position of 157 'and the wheelchair is moved into the box 156 in this state. Move it. In addition, the rear gate 168 of the box 156 is closed. After preparing clothes to be changed in the box 156, a wheelchair carrying a bathing person, for example, as shown in FIG. 25, the backrest part 104 is slightly raised, and the pedestal 109 is attached to the bathtub lane 122. ), The lock lever 111 of the pedestal 109 is operated, and the pedestal 109 and the trolley 108 are unlocked. Finally, the roller 112 of the pedestal upper part 164 enters the rail 122, removes the pedestal 109 from the trolley, and introduces only the pedestal 109 into the bathtub 121.

31 shows a state in which the box 156 is pushed out of the vehicle. About one third of the floor of the box supports the pushed out portion of the car floor. In addition, the wheelchair lift 157 also supports the box 156 in a raised state after the pedestal 109 is introduced into the bathtub.

In the above, the wheelchair, the bath, and the bath provided with the obstacle climbing apparatus were demonstrated. By combining these two or three characters properly, an efficient bathing system can be formed. The bathing system can be configured by a combination of both a wheelchair and a bath, and a combination of three of a wheelchair, a bath and a car. These bathing systems can bathe the elderly, the sick and the disabled in a single caregiver, and are composed of a very efficient bathing system.

As described above, the obstacle climbing device shown in the first to sixth embodiments, a wheelchair provided with the obstacle, or a bathing system using the wheelchair can be realized.

From Example 1 to Example 4, an obstacle climbing device having a toggle structure made of a quadrilateral link, an elastic body such as a coil spring, rubber, etc. can be provided. When the guardian or the user is in contact with the obstacle, the guard wheel or the user can simply move the operation unit in one direction with his feet or hands to lower and operate the auxiliary wheel of the obstacle climbing device, thereby injuring the front wheel and riding over obstacles such as steps.

In addition, after the ride, the auxiliary wheel of the obstacle climbing device can be returned to its original position simply by advancing the wheelchair, and thus, it is possible to easily ride the obstacle such as a step.

In addition, in the obstacle climbing device shown in the fifth embodiment, since the traverse frame can be rotated upward, the wheelchair itself can be folded. Further, by allowing the obstacle climbing device to rotate forward from the rear, even if the chair frame of the wheelchair has a cross structure, contact between the obstacle climbing device and the cross structure can be avoided, and it can be folded in the same width as before.

Further, by using the wheelchair equipped with the obstacle climbing device shown in Example 6 in the bathing system, for example, the wheelchair can be moved to the bathing car while maintaining stability even when the sick person is lying down. Conventionally, when there is an obstacle such as a step when moving a wheelchair to a bathing car, in the past, the front wheel of the wheelchair was injured as the guardian injured while lying on the sick person, but in particular, the wheelchair stability is insufficient as it lies down. However, there was a risk of rolling sideways and the like, but by providing an obstacle climbing device, the wheelchair can be easily moved to the bathing car while maintaining stability. In addition to having a function as a normal wheelchair, the wheelchair itself also has a function as a stretcher for carrying injured people and a bathing function. The wheelchair can also be leveled and its length can be adjusted according to the height of the person in the wheelchair. It can have such features.

Claims (20)

A wheelchair comprising a chair frame, a handle provided on the chair frame, a pair of parking wheels and front wheels rotatably supported by the chair frame, and an obstacle climbing device provided below the chair frame, The obstacle climbing device has a support frame, an auxiliary wheel frame, an operation frame, a connecting frame and an elastic body disposed on quadrilateral links pivotally connected to each other, The support frame is vertically installed with the upper end fixed to the chair frame and oriented almost vertically, The operation frame is pivotally attached at a pivot point A at an intermediate position of the support frame, and both ends are operated levers extending in the front-rear direction, or one end is rearward or frontward of the chair frame. It becomes the operation lever installed extended, The auxiliary wheel frame is on the side opposite to the operation frame, and the auxiliary wheel pivots at one end side pivotally at pivot point B at the lower end side of the support frame, and rotatably at the other end side extending rearward. It is, One end of the connecting frame is pivotally attached to the operation frame at the pivot point (C), and the other end is pivotally attached to the auxiliary wheel frame at the pivot point (D), The elastic body exerts a force to pull the auxiliary wheel frame upward; The auxiliary wheel rotates to the front wheel side by moving downward or upward of the operation lever and lands on the rear of the front wheel, and then further rotates to the front wheel side by moving the operation lever further downward or upward to move the front wheel side. The wheelchair characterized in that to rise above the auxiliary wheel. A chair frame, a handle provided on the chair frame, a pair of parking wheels and front wheels rotatably supported on the chair frame, an obstacle climbing device installed on the lower part of the chair frame, and the chair frame are disposed in a horizontal direction A wheelchair with a transverse frame The obstacle climbing device has a support frame, an auxiliary wheel frame, an operation frame, a connecting frame and an elastic body disposed on quadrilateral links pivotally connected to each other, The support frame is vertically installed with the upper end side supported by the transverse frame in a substantially vertical direction. The operation frame is pivotally attached at a pivot point A at an intermediate position of the support frame, and both ends are operated levers extending in the front-rear direction, or one end is rearward or frontward of the chair frame. It becomes the operation lever installed extended, The auxiliary wheel frame is on the side opposite to the operation frame, and the auxiliary wheel pivots at one end side pivotally at pivot point B at the lower end side of the support frame, and rotatably at the other end side extending rearward. It is, One end of the connecting frame is pivotally attached to the operation frame at the pivot point (C), and the other end is pivotally attached to the auxiliary wheel frame at the pivot point (D), The elastic body exerts a force to pull the auxiliary wheel frame upward; The auxiliary wheel rotates to the front wheel side by moving downward or upward of the operation lever and lands on the rear of the front wheel, and then further rotates to the front wheel side by moving the operation lever further downward or upward to move the front wheel side. The wheelchair characterized in that to rise above the auxiliary wheel. The said obstacle climbing device connects the said pivot point A and the said pivot point B in Claim 1 or 2 with the said auxiliary wheel being grounded, and the said front wheel floating. An imaginary line β connecting the pivot point A and the pivot point D, or an imaginary line connecting the support frame or the transverse frame and the pivot point D, rather than the imaginary line α. Wheelchair (γ) is located in front. The wheelchair according to any one of claims 1 to 3, wherein the operation lever provided to extend rearward has a foot rest. The wheelchair according to any one of claims 1 to 4, wherein the operation lever extending forward is located below the front of the seat. 6. The operation lever of claim 5, wherein the operation lever extended forwardly has an elastic body mounted therein, and a grip portion is provided at one front end of the operation lever, and the grip portion is stretchable by attaching the elastic body to the grip portion. Wheelchairs characterized in that. The said auxiliary wheel frame has a some pivot hole, The said pivot point B and the said pivot point D are provided in any one of the said pivot holes, The said auxiliary wheel frame of any one of Claims 1-6. There is wheelchair. The wheelchair is according to any one of claims 2 to 7, wherein the wheelchair is rotatably joined to one end of either side of the cross frame so as to be rotatable in the up and down direction, and furthermore, Joined transverse frame pivots, and And a transverse frame bearing portion joined to an opposite position to the chair frame to which the transverse frame pivot is joined and capable of engaging with the other end of the traverse frame. According to any one of claims 2 to 8, The transverse frame is a rotating joint portion rotatably joined to the transverse frame rotating portion; An obstacle climbing device joining unit joined to the support frame of the obstacle climbing device and having an L-shaped moving groove; And Composed with the transverse frame bearing portion, a part of the transverse frame coupling portion is inserted into the obstacle climbing device junction, Install the extension pin bonded to the transverse frame coupling portion in the moving groove, An elastic body is mounted inside the obstacle climbing device joint part, and the elastic body is mounted on the transverse frame coupling part, and the transverse frame coupling part moves left and right along the moving groove by left and right movement of the extension pin. Wheelchair. The said wheelchair is a lower part of the said seat part in the frame shape of the said chair frame, and when the said transverse frame is rotated upwards by the said transverse frame rotation part, The said wheelchair is in any one of Claims 2-9. And a support pin for supporting the transverse frame on the track to the chair frame. The obstacle climbing device has the rotational joining portion having a U-shaped or an inverted U-shaped rotating groove according to claim 9 or 10, The obstacle climbing device junction is inserted into the pivot joint; A projection portion joined to the obstacle climbing device junction portion in the rotary groove, And said obstacle climbing device is rotatable back and forth along said rotation groove so that said obstacle climbing device can rotate back and forth. The wheelchair according to any one of claims 1 to 11, wherein the elastic body is either coil spring or rubber. A wheelchair consisting of a bogie and a pedestal, The said trolley | bogie is equipped with the obstacle climbing apparatus as described in any one of Claims 1-12, The pedestal is composed of a foot, a seat and a back, and the pedestal can be angle-changed at all or part of the connecting portion of the foot, the seat, and the back, and can be fixed at a desired angle. Wheelchairs, characterized in that the entire base can be arranged horizontally. The method of claim 13, wherein the foot portion comprises a footrest and a footrest, wherein the back portion consists of a backrest, a slide stroke and a headrest mat, and the pedestal and the bogie can be separated. Wheelchair. The wheelchair according to claim 13 or 14, wherein the pedestal can move back and forth along the bogie frame. The wheelchair according to any one of claims 13 to 15, wherein the pedestal can move left and right along a frame installed at right angles to the pedestal on a bogie frame under the pedestal seat. 17. The pedestal according to any one of claims 13 to 16, wherein an elevator is installed on the trolley, the tip of the elevator is connected to a slide frame, and the pedestal is moved up and down by the shanghai of the elevator through the slide frame. Wheelchair characterized by being removable. 18. The wheelchair according to any one of claims 13 to 17, wherein the slide stroke portion can move back and forth, left and right, front and rear and right and left in the backrest portion. A bath for bathing, the other end of which is arranged to be opened and closed, an introduction member for introducing a pedestal of a wheelchair to the head (front) and the bottom is provided, and a water passage is arranged in the tub and the water passage A bath to allow hot water to be discharged from the inside of the bathtub, and also to place a lift in the lower part of the bathtub to enable shandong throughout the bathtub, and The bathing system which consists of a wheelchair as described in any one of Claims 13-18. As a bath vehicle equipped with a bath and a water supply and discharge facility for supplying the bath, and which can be transported and bathed, A box disposed at the rear of the bathing vehicle so as to be accessible by an introduction member; A lift for transferring the wheelchair to the bathing car; A wheelchair having one rail at the ceiling of the bathing car and two rails at the bottom of the bath to access the box; And The bathing system which consists of a wheelchair as described in any one of Claims 13-18.