KR19990046037A - Multifuctional bed for an immovable person - Google Patents

Abstract

The present invention can be switched to a chair and a bed according to the user's operation to facilitate the care and handing out of the elderly and critically ill elderly people who can not move by their own power, multifunctional bed for the incompetent behaviors to facilitate the bowel movements and tricycles, bathing Regarding, the multifunctional bed for the incompetence of the present invention, the saddle 20 is installed on the upper surface so that the user can sit, the rolling wheel 12 is installed on the lower surface to move freely, the rolling wheel 12 The hydraulic cylinder installed between the body 10, the height of the saddle is adjusted by the hydraulic cylinder installed between the saddle 20 and one side of the upper surface of the body 10, installed on one side of the body 10. The backrest 40, the angle of which is adjusted by the, and the foot rest hinged to the other side of the upper surface of the body 10, the footrest is adjusted by the hydraulic cylinder installed on the other side of the body 10 30 and the hydraulic device for stretching and contracting the pistons of the hydraulic cylinder, so that the behavioral deviation can be operated by the chair of the backrest and the legrest at the most comfortable angle, the bowel movement of the inconvenience and The bath can be carried out on the bed, allowing the caregiver to deal with the behavioral deficit, and to reduce the contact area with the behavioral impairment, thereby preventing the back sore or the pressure sore.

Description

Multifunctional bed for an impaired person {Multifuctional bed for an immovable person}

The present invention relates to a multi-functional bed for a disabled person, more specifically, it is possible to automatically switch to a chair and bed according to the user's operation to facilitate the care and handing out of the elderly and the intensive care unit that can not move by their own power, The present invention relates to a multifunctional bed for the disabled, which facilitates bowel movements, tricycles and bathing.

A person with a disability refers to an elderly person, a disabled person, a patient, etc. whose daily activities are difficult to do by themselves, and those who need the protection of society such as family members or carers. In particular, in the modern society where the importance of the social security system is becoming more important, it is essential to minimize the social loss that can be caused to society by ensuring the treatment and comfortable living of the disabled.

Therefore, the present invention was devised for the convenience of the caregiver who lifts, nursing or caring for the disabled as well as the disabled.

BACKGROUND ART Conventional patient beds used by elderly, disabled, and patients who are inconvenient in mobility in hospitals, homes, nursing homes, nursing homes, etc. are divided into two halves so that the front end of the bed can be folded and a screw penetrates the front end. It was a configuration that can stand up or lay down the upper body of the behavioral discomfort by rotating with a rotary knob.

Therefore, in order for a disabled person using a conventional patient's bed to watch television, eat, talk, or read a television, a caregiver nursing the disabled person holds a rotation knob installed on one side of the bed and rotates several times. The tip angle should be upright, and the impaired person using this patient's bed will be able to stand with his legs stretched out.

However, such a conventional patient bed is not able to simply rotate the rotation handle itself to raise the behavioral deviation, and need a caregiver who can rotate the rotation handle, and turn the rotation handle several times a day Manual work was very cumbersome, so the caregiver was difficult and structurally forced to stand only the tip of the bed, so there was a problem that the comforter could not sit with his legs bent to provide the comfort of the chair.

In addition, the conventional patient bed has to use a separate toilet and a bathroom, there was a lot of difficulties, such as the caregiver to lift the behavioral deficiency during the movement and defecation of such a discomfort.

In addition, the conventional patient bed is a structure that can not adjust the height of the bed, the behavior of the behavioral discomfort in consideration of the size of the behavioral discomfort can not be facilitated, it was difficult to move the behavioral deviation to the examination table or examination table, etc. there was.

In addition, the conventional patient bed has a problem such that the back contact or bedsores occur when the behavioral discomfort is used for a long time because the area is in contact with the behavioral discomfort.

On the other hand, a picnic armchair that is folded back to the backrest and the legrest is commercially available separately from the conventional patient bed, but this is a method that the user manually manipulates the angle of the backrest and the legrest by hand. It is not suitable, and the function of bowel movement and bath is not considered at all, and it was developed separately from the patient bed. In addition, it is possible to adjust the angle of the backrest and the legrest in chairs used in beauty salons, barber shops, and express buses. There is, but it does not have the function of the toilet, bed and bath bed, because it is operated by manual there was a problem that could not be used for the disabled.

In addition, even if the conventional patient bed or other angle adjustment chair is operated by manual, its structure is complicated, the operation noise is too high, and it is difficult to be widely used in homes and nursing homes due to the high cost of purchase such as separately purchased. There was this.

An object of the present invention for solving the above problems, by adjusting the adjustment period can be operated by the chair of the chair and the backrest of the most uncomfortable behavior yourself, the defecation and bathing of the disabled person can be carried out on the bed The caregiver is convenient to handle the mobility impaired, and because the height of the chair and bed can be adjusted to provide a multifunctional bed for the mobility impaired to facilitate the movement of the impaired person to another examination table or examination.

Another object of the present invention is to provide a multifunctional bed for a disabled person who reduces the contact area with the disabled person and prevents back sores or bedsores, and uses hydraulic cylinders, which is relatively inexpensive to manufacture, and makes noise free. have.

1 is a perspective view showing a state in which a multifunctional bed for a disabled person according to a preferred embodiment of the present invention is used as a chair.

FIG. 2 is a side cross-sectional view illustrating a state in which the multifunctional bed for the disabled person of FIG. 1 is used as a bed (bath bed).

3 is a cross-sectional view showing a state in which the water barrier wall of FIG. 2 is fastened to a legrest.

Figure 4 is a perspective view showing another embodiment of the concave-convex cushion of FIG.

5 is a hydraulic circuit diagram illustrating a hydraulic apparatus for driving the height adjusting cylinder and the angle adjusting cylinder of FIG. 1.

FIG. 6 is a state diagram illustrating a state in which the user uses the multifunctional bed for the incompatibility of FIG.

In order to achieve the above object, the multifunctional bed for the incompetence of the present invention, in the configuration of the multifunctional bed for the incompetence of the bed and the chair, the saddle is installed on the upper surface so that the user can sit, so that the movement is free Rolling wheel is installed on the lower surface, the body is adjusted to the height of the saddle by the hydraulic cylinder installed between the rolling wheel and the saddle, hinged to one side of the upper surface of the body so that the user can lean back or lie down, The hydraulic cylinder is installed on one side of the body and the backrest is adjusted to the angle, the user is hinged to the other side of the upper surface of the body so that the user can bend or spread the leg, the hydraulic cylinder is installed on the other side of the body Connected to the legrest and the hydraulic cylinders, the angle of which is adjusted by the internal hydraulic pressure of the hydraulic cylinders By section is characterized in that comprises a hydraulic device for elongation and contraction of the piston of the hydraulic cylinder.

In addition, the body has a toilet with a lid in the saddle to facilitate the bowel movement of the incompatibility, the toilet is pressed in the direction of the toilet seat fixed to the body by a toggle clamp, the front and rear ends of the body It is preferable that it is a removable toilet seat fixed.

In addition, the body is preferably provided with an armrest having a shape protruding upwards to allow the user to lean on the left and right edges of the saddle in order to prevent the inconvenience of the inconvenience and to prevent the water from overflowing to the saddle during the bath.

In addition, a drainage port is formed in the saddle so that the bath water of the backrest and the legrest which is horizontal when the user bathes is collected and drained in one place, and a step is formed at the edges of the backrest and the legrest, and the backrest and the legrest are formed. A drain groove may be formed on the surface of the bath to guide the bath water to the drain hole.

In addition, the backrest is preferably provided with a concave-convex cushion in which a plurality of concave-convex is formed to reduce the contact area with the user.

The hydraulic apparatus may include a hydraulic tank for storing hydraulic oil, a hydraulic pump for supplying the hydraulic oil stored in the hydraulic tank by an electric motor to a supply path connected to the hydraulic cylinder at a high pressure, and a constant pressure in the supply path. A relief valve forming a pressure relief, a pressure gauge indicating the pressure of the supply passage, and a pressure switch connected to the hydraulic pump to selectively determine the supply direction of each supply passage according to an operation between adjustments, and the same pressure to a plurality of hydraulic cylinders. It may include a hydraulic booster for supplying the pressure oil of.

The bath may further include a water barrier wall formed at a height of a predetermined height or more at the edges of the backrest and the legrest to prevent the overflow of bath water during bathing, and a coupling tool formed to be detachable from the backrest and the legrest on one side. desirable.

Hereinafter, a multifunctional bed for a disabled person according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

First, as shown in Figures 1 and 2, the multifunctional bed for the behavioral discomfort of the present invention, the chair and the bed can be used, the bowel movement and the treatment of the behavioral discomfort is easy, the bed is switched to the bath As a configuration which makes it possible, it comprises the body 10, the backrest 40, the legrest 30, and the hydraulic apparatus.

That is, the body 10 is a hexahedral shape as a whole, and the saddle 20 is installed on the upper surface of the user, that is, the impaired person can sit, and rolls in four directions at the four corners of the lower surface so as to move freely. The free rolling wheel 12 is installed, the four height adjustment cylinders 14 are installed between the rolling wheel 12 and the body 10, respectively, to adjust the height of the saddle 20.

Therefore, since the height of the saddle 20 can be adjusted, it is possible to facilitate the activity of the disabled in consideration of the body size of the disabled, and to adjust the height of the bed according to the height of the examination table or examination table (not shown) It is easy to move the inconvenience.

In addition, the backrest 40 is hinged to one side of the upper surface of the body 10 so that the user can lean or lie on the back is formed in a foldable plate structure, the body 10 and the backrest 40 The angle of the upper and lower sides of the angle is adjusted by the angle adjusting cylinder 44 which is installed at both ends hinged to the lower surface.

Therefore, based on the saddle 20, the backrest 40 is parallel to each other or inclined upward to allow the user to stand the upper body.

In addition, the legrest 30 is hinged to the other side of the upper surface of the body 10 so that the user can bend or spread the leg is formed of a folding plate structure, the body 10 and the legrest The angle of the upper and lower sides of the 30 is respectively adjusted by the angle adjusting cylinder 34 hingedly installed at both ends thereof.

Here, one angle adjustment cylinder 34 installed on the legrest 30 is installed, and two angle adjustment cylinders 44 installed on the backrest 40 to support a heavier load are installed. It is preferable.

Therefore, the legrest 30 is based on the saddle 20 to be side-by-side horizontal or inclined downward to allow the user to bend the legs.

That is, when both the backrest 40 and the legrest 30 are parallel to each other on the basis of the saddle 20, the user will be in a bed state where the user can lie down to bed or take a bath. In addition, when the backrest 40 and the legrest 30 are inclined upward and downward, respectively, based on the saddle 20, the user is in a chair state where the user can sit and watch television or read. At this time, the user operates the backrest angle adjusting section 67a and the legrest angle adjusting section 66a connected to the angle adjusting cylinders 34 and 44 to fit the angle of the backrest 40 and the legrest 30 to their own fit. It can be adjusted to a comfortable state.

Thus, the multifunctional bed for the non-competal behavior of the present invention is connected to the angle adjustment cylinders 34 and 44 to adjust the internal hydraulic pressure of the angle adjustment cylinders 34 and 44 by the angle adjustment cylinder 34 and It is provided with a hydraulic device for extending and contracting the pistons of the height adjustment cylinder (14).

On the other hand, the multifunctional bed for the incompetence of the present invention caregivers to remove the inconvenience of handling faeces by moving the user to the toilet or put a portable toilet in the buttocks of the user, the saddle (20) so that the user's bowel movements are comfortable ), A toilet 24 having a lid 26 is embedded.

That is, the toilet 24 is detachable from the saddle 20 and fixes the toilet seat 27 in which a concave groove having a shape corresponding to the distal end of the toilet 24 is formed on the lower surface of the saddle 20. On the other side of the other side, a toggle clamp 29, one end of which is retracted by the bending of the handle, is installed, connected to one end of the toggle clamp 29, and shaped to correspond to the rear end of the toilet 24. A concave groove is formed so that when the one end of the toggle clamp 29 is advanced, the toilet seat 28 for urging the toilet 24 toward the toilet seat 27 is installed, so that the front end and the rear end of the toilet 24 are provided. It is a configuration for fixing the part to the bottom of the saddle (20).

Therefore, when the user defecates, the user or caregiver is positioned at the hip of the user to open the lid 26 of the toilet 24 exposed to the outside, and when the toilet 24 is used, the user defecates in the position of lying down or sitting down. This is possible, and after the bowel movement is closed again the lid 26, the caregiver to operate the handle of the toggle clamp 29 installed on the bottom of the saddle 20 inside the body 10 to reverse the toilet seat 28 By separating the toilet seat (27) and the toilet seat 24 is free from the toilet seat 28, and then the contents of the toilet seat 24 can be easily handled by transporting the toilet.

Therefore, there is no need to defecate in a very uncomfortable posture to lift the waist when defecating using a separate toilet 24 as in the prior art, there is no inconvenience such as the caregiver to move the user to the toilet to see the bowel movement.

On the other hand, the body of the present invention is upwards to make the user more comfortable, and to allow the user to lean on the left and right sides of the saddle 20 to prevent water from overflowing to the side of the saddle 20 when taking a bath. An armrest 22 having a protruding shape is installed.

Here, the armrest 22 is provided with the backrest angle adjustment bar 67a and the legrest angle adjustment bar 66a as mentioned above to facilitate the user's operation.

In addition, the multi-functional bed for a disabled person of the present invention, the user lying on the bed is a configuration that can take a bath, such as shower or tricycle, the bath water of the backrest 40 and the legrest 30 to form a horizontal when the user bathes A drain hole 20b is formed in the saddle 20 to be collected and drained, and a stepped portion is formed at an edge of the backrest 40 and the legrest 30, and the saddle 20, the backrest 40 and the leg are formed. Drainage grooves 20a, 30a, 40a are formed on the surface of the support 30 to guide the bath water to the drain 20b.

Here, a drain pipe 18 connected to the drain port 20b is installed inside the body 10, and a valve 17 that opens and closes the drain pipe 18 is installed and drained through the drain pipe 18. A drain tank 16 is installed to temporarily store the bath water so that the bath water does not overflow to the outside of the bed, and after the bath is finished, the caregiver can carry the bath water to the bathroom for easy treatment. It was made.

In addition, not only this, the multifunctional bed for the incompetence of the present invention, as the water barrier wall 50 is detachably installed at the edges of the backrest 40 and the legrest 30 so as to completely prevent the overflow of the bath water. , The water barrier wall 50 is formed to a height or more than a predetermined height, the coupling member is formed to be detachable with the backrest 40 and the legrest 30 on one side.

Here, as shown in Figure 3, the coupler, one side is coalesced by a spring 55 built into the water barrier wall 50, the other side is protruded to the outside of the water barrier wall 50 to stretch and contract Is hinged to the other end of the movable table 54 so that the one end is folded through the movable table 54 and the through holes 30b and 40b formed at the edges of the backrest 40 and the legrest 30. It has a fixed handle 52 that is coupled.

Here, the movable table 54, one end portion is widened to the guide 56 that is embedded and fixed to the water barrier wall 50 is inserted, the widened guide 56 to the outside of the guide 56 is external The stopper 57 is installed so as not to be separated, and the spring 55 is installed between the widened end of the guide 56 and the stopper 57 to support the coal drop, and the through holes 30b and 40b are provided. In the form of a rectangular groove is formed on one side of the cylindrical inner diameter, the eccentric protrusion protruded eccentrically to the hinge portion of the fixed handle 52 can be inserted.

Accordingly, the fixing handle 52 is torsionally rotated through the through hole 30b formed in the legrest 30 so that the eccentric protrusion is bent when the position of the eccentric protrusion is out of the position of the string groove. By pulling the movable movable table 54 while pressing the legrest 30, the fixing of the water barrier wall 50 and the legrest 30 is firmly performed, and the bath water has the water barrier wall 50 and the legrest ( 30) to prevent leakage. In addition, by installing a rubber packing member (not shown) on the bottom of the water barrier wall 50 can be made more robust assembly.

In addition, the configuration of the coupler can be applied to the barrier wall 50 in a very wide variety, the technical idea of the coupler is modified and changed by those skilled in the art within the scope without departing from the technical spirit of the present invention. It is easy.

Here, the water barrier wall 50 is to be installed in the same configuration in the backrest 40, as shown in Figure 6, to make the multifunctional bed for the behavioral discomfort of the present invention in the shape of a bed, the water barrier wall 50 After assembling the backrest 40 and the legrest 30, the caregiver can bathe the behavioral deficit so that the bath water does not overflow, and it is possible to bathe the behavioral discomfort in the home or the ward, There is no need.

On the other hand, as shown in Figure 1, the backrest 40 is provided with a concave-convex cushion 42 in which a plurality of wave-shaped concave-convex irregularities are repeatedly formed in a waveform to reduce the contact area with the user, or in Figure 4 As shown in the figure, an uneven cushion 46 in which a plurality of cushion-type unevennesses are formed continuously and repeatedly may be installed. Here, the uneven type cushion 46 has a through hole 46a for draining the bath water when bathing, and is normally detachable plug having a shape corresponding to the through hole 46a to seal the through hole 46a. 46b can be provided. In addition, the shape of the concave-convex cushion may be applied in various ways.

Therefore, the area in contact with the behavioral impairment can be reduced to prevent the occurrence of back sores or bedsores when the behavioral impairment is used for a long time lying down.

On the other hand, Fig. 5 shows an example of a hydraulic circuit diagram of the hydraulic device for driving the multifunctional bed for the disabled person of the present invention.

As illustrated in FIG. 5, the hydraulic apparatus sucks the hydraulic oil stored in the hydraulic tank 60 and the hydraulic oil stored in the hydraulic tank 60 by the electric motor 62 through the filter 61. The hydraulic tank 60 supplies a hydraulic pump 63 for supplying to the supply path connected to the angle adjusting cylinders 34 and 44 and the height adjusting cylinder 14 in a state of high pressure, and the pressure oil supercharged when the pressure of the hydraulic oil is excessively supplied. The relief valve 64 which forms a fixed hydraulic pressure in the said supply path by draining with a furnace, and the pressure gauge 65 which shows the pressure of the said hydraulic oil are comprised.

In addition, the supply passage is branched into a supply passage connected to the angle adjustment cylinders 34 and 44 and a supply passage connected to the height adjustment cylinder 14, and a supply passage branched to the angle adjustment cylinder 34. Is again branched into a supply passage connected to the angle adjustment cylinder 44 of the backrest 40 and the angle adjustment cylinder 34 of the legrest 30.

Here, each of the supply paths connected to the angle adjustment cylinders 34 and 44 of the backrest 40 and the legrest 30 receives the pressure oil supplied from the hydraulic pump 63 between the legrest angle adjustment period 66a and According to the operation of the backrest angle adjustment section (67a) to switch the direction to each supply path branched to the angle adjustment cylinder 34 of the backrest 40 and the angle adjustment cylinders 34, 44 of the legrest 30 to supply Directional valves 66 and 67 are provided.

On the other hand, the supply path connected to the height adjustment cylinder 14, a pair of groove valve 68 and the drain valve 69 for adjusting the speed and direction of the supplied pressure oil and a plurality of the height adjustment cylinder (14) Hydraulic booster 70 for supplying the pressure oil of the same pressure is installed in the.

Therefore, when the user operates the legrest angle adjustment section 66a and the backrest angle adjustment section 67a installed in the armrest 22, the pressure oil supply direction of the direction switching valves 66 and 67 is switched to the angle adjustment cylinder ( It is possible to adjust the angle of the backrest 40 and the legrest 30 by extending and contracting the pistons of the heads 34 and 44. When the user operates the groove valve 68, the hydraulic booster 70 is used. The flow of the pressure oil of the height adjustment cylinder 14 is switched to adjust the height of the bed by extending and contracting the piston of the height adjustment cylinder 14.

Here, the hydraulic circuit diagram is for driving the angle adjustment cylinders 34, 44 and the height adjustment cylinder 14, it is possible to configure various types of hydraulic circuit diagrams, and the description of the hydraulic circuit diagram for this purpose Is easy to modify and change those skilled in the art without departing from the spirit of the present invention.

Therefore, it is possible for the impaired person to manipulate the angle of the legrest 30 and the backrest 40 from time to time to live in a comfortable posture, and by automating the hydraulic system, the structure is rather simple, thus reducing the noise during operation. By combining chairs and beds, which had to be purchased separately, there is an advantage that the purchase cost is cheap and can be widely used in homes and nursing homes.

In addition, the multifunctional bed for the non-functioning person of the present invention can be driven by an electric device including a screw rod which is screwed by an electric motor and an electric motor, in addition to using such a cylinder, and a manual hydraulic jack as the height adjusting means. It is also possible to configure by installing a manual screw device, such as an angle adjusting means.

As described above, according to the multifunctional bed for the incompetent behavior of the present invention, the incompatibilities themselves can be operated by the chair of the most comfortable angle by adjusting the adjustment period, the bowel movement and bathing of the incompetent behavior can be carried out on the bed It is convenient for the caregiver to handle the impaired, and the height of the chair and the bed can be adjusted so that the impaired person can easily move to another examination table or the examination room, and to reduce the contact area with the impaired to prevent back sores or bedsores. It has an effect.

Claims (9)

In constructing a multifunctional bed for a disabled person that can combine a bed and a chair, The saddle 20 is installed on the upper surface so that the user can sit, and the rolling wheel 12 is installed on the lower surface so that the user can move freely, and the saddle is provided by a hydraulic cylinder installed between the rolling wheel 12 and the saddle 20. The height of the body 10 is adjusted; A backrest (40) hinged to one side of the upper surface of the body (10) so that the user can lean or lie on his back and whose angle is adjusted by a hydraulic cylinder installed on one side of the body (10); A footrest 30 hinged to the other side of the upper surface of the body 10 so that the user can bend or spread the leg by bending, and the angle of which is adjusted by a hydraulic cylinder installed on the other side of the body 10; And A hydraulic device connected to the hydraulic cylinders to expand and contract the pistons of the hydraulic cylinder by adjusting the internal hydraulic pressure of the hydraulic cylinders; Multifunctional bed for a disabled person characterized in that it comprises a. According to claim 1, The body 10 is a toilet 24 having a lid 26 in the saddle 20 is built in, the toilet 24 is fixed to the body by a toggle clamp 29 Multifunctional bed for the incompetent behavior, characterized in that the removable toilet seat 24 is pressed in the direction of the toilet seat fixing (27) fixed to the body. According to claim 1, wherein the body (10) multifunctional bed for the disabled, characterized in that the left and right sides of the saddle 20 protruding upwardly armrest (22) is installed so that the user can lean on the arm. The saddle according to claim 1, wherein a drain hole 20b is formed in the saddle so that the bath water of the backrest 40 and the legrest 30 which is horizontal when the user bathes is collected and drained to one place, and the backrest 40 is formed. And a stepped portion is formed at the edge of the legrest 30, and drainage grooves 20a and 30a for guiding bath water to the drain hole 20b on the surfaces of the saddle 20, the backrest 40 and the legrest 30 are provided. ) 40a is a multi-functional bed for the disabled. The drain pipe 18 is connected to the drain port 20b, and a valve 17 for opening and closing the drain pipe 18 is formed, and the drain pipe 18 is drained through the drain pipe 18. Multifunctional bed for a disabled person, characterized in that for installing a drain tank (16) for temporarily storing the bath water. According to claim 1, The backrest (40) is a multifunctional bed for a disabled person, characterized in that a plurality of uneven cushions (42, 46) are formed to reduce the contact area with the user is formed. The hydraulic device of claim 1, wherein the hydraulic device comprises: a hydraulic tank 60 for storing the pressurized oil and a hydraulic pump for supplying the pressurized oil stored in the hydraulic tank by an electric motor to a supply path connected to the hydraulic cylinder at a high pressure. 63), a relief valve 64 for forming a constant pressure in the supply passage, a pressure gauge 65 indicating the pressure in the supply passage, and the hydraulic pump 63, connected to each supply passage according to an operation between adjustments. Multi-functional bed for disabled people characterized in that it comprises a direction switching valve (66) (67) for selectively determining the supply direction of the hydraulic booster (70) for supplying pressure oil of the same pressure to the plurality of hydraulic cylinders. The method of claim 1, wherein the backrest 40 and the legrest 30 is formed at a height higher than a predetermined height so as to prevent the overflow of the bath water when bathing, and the backrest 40 and the legrest 30 and one side Multifunctional bed for a behavioral discomfort, characterized in that it further comprises a water barrier wall 50 is formed with a coupler detachable. The movable table 54 and the backrest 40 of claim 7, wherein one side of the coupler is coalesced by a spring 55 embedded in the water barrier wall, and the other side protrudes out of the water barrier wall 50. And a fixed handle 52 which is hinged to the other side of the movable table 54 so as to penetrate through the through-holes 30b and 40b formed at the edge of the legrest 30. Multifunctional bed for the disabled.