Nursing device

Abstract

Provided is a care device comprising: a base on which a person to be cared is taken; a rear caster disposed at a rear portion of the base in the riding direction; a front caster provided in the front of the base and having a wheel diameter larger than that of the rear caster; and a middle caster provided between the rear caster and the front caster of the base, the middle caster having a wheel diameter larger than that of the rear caster.

Description

Technical Field

[0001] This specification relates to a care device that assists a care receiver in his or her movements. Background Art

[0002] With the development of an aging society, the demand for nursing devices is increasing. Most nursing devices assist the care receiver with various movements by driving a support component that supports a portion of the care receiver's body. Furthermore, the care receiver can be moved by being equipped with casters for mobility. The introduction of nursing devices reduces the physical burden on both the care receiver and the caregiver, and also alleviates the shortage of caregivers. Patent Document 1 discloses a technical example of such a nursing device.

[0003] Patent Document 1 discloses a nursing device comprising a pair of front casters, an intermediate caster, and a rear caster, each arranged on the left and right sides of a main frame. The intermediate casters are positioned outside the smallest area of ​​a trapezoidal shape encompassing the pair of front casters and the pair of rear casters. Furthermore, the disclosure discloses that the intermediate casters and the rear casters have the same diameter but a smaller diameter than the front casters, and that the front casters have a locking function. Thus, the intermediate casters are positioned on the outside in the left and right directions, thereby improving the stability of the nursing device and preventing interference with a bed or the like.

[0004] Patent document 1: International Publication No. 2021 / 210077. Utility Model Content

[0005] Issues to be addressed

[0006] However, the caster structure of the nursing device disclosed in Patent Document 1 may not always provide good performance. For example, on imperfect surfaces with steps and bumps, the contact state of the multiple casters becomes unstable, thus reducing the maneuverability of the nursing device when navigating steps and bumps. To improve maneuverability, the wheel diameter of the casters can be increased, but this has the disadvantage of causing interference with other devices such as wheelchairs. Furthermore, given the imperfect surface, the locking function of the pair of front casters may not necessarily stabilize the stationary state of the nursing device.

[0007] Therefore, the problem to be solved in this specification is to provide a care device having a caster structure that suppresses interference with other devices and improves passability compared to conventional ones.

[0008] Means for solving problems

[0009] This specification discloses a nursing device comprising: a base for carrying a person being cared for; rear casters arranged at the rear of the base in the riding direction; front casters arranged at the front of the base and having a wheel diameter larger than that of the rear casters; and intermediate casters arranged between the rear casters and the front casters of the base and having a wheel diameter larger than that of the rear casters.

[0010] In addition, the present specification discloses a nursing device comprising: a base for carrying a person being cared for; rear casters provided at the rear of the base in the riding direction; front casters provided at the front of the base; intermediate casters provided between the rear casters and the front casters of the base; and four or more locking mechanisms, which are respectively provided on four or more casters among a plurality of casters including the rear casters, the front casters and the intermediate casters to lock the casters.

[0011] Utility model effect

[0012] According to the disclosed nursing device, by providing the middle casters having a larger wheel diameter than the rear casters, interference with other devices such as wheelchairs can be suppressed, and the ability to travel over steps and uneven surfaces on the ground can be improved compared to the past.

[0013] Furthermore, according to the disclosed care device, by providing a locking mechanism on each of four or more casters, the stationary state of the care device can be stabilized compared to conventional methods on an undesirable floor surface with uneven surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view showing the overall structure of the care device according to the embodiment.

[0015] Figure 2 It is a perspective view showing the overall structure of the nursing device.

[0016] Figure 3 This is a three-dimensional view of the base and foot support parts of the care device viewed from below.

[0017] Figure 4 This is a side view used to explain the structure and function of the caster in detail.

[0018] Figure 5 It is a perspective view showing the overall structure of the care device in a modified form. DETAILED DESCRIPTION

[0019] 1. Overall Structure of Nursing Device 1 According to Embodiment

[0020] Reference Figures 1 to 3 The overall structure of the nursing device 1 according to the embodiment will be described. Figure 1As shown by the arrow on the upper right of , determine the front, back, left, and right of the nursing device 1. Figure 1 The right side of the nursing device 1 is the main driving direction when the nursing device 1 is moving, and the rear side of the nursing device 1 ( Figure 1 The left side of the care receiver is the rear side of the care receiver's boarding direction on the care device 1. The care device 1 is used for transferring between two locations indoors, such as between a care receiver's bed and a wheelchair, or between a wheelchair and a toilet seat. Furthermore, the care device 1 can also be used to transport the care receiver even when the two locations are separated. For example, the care device 1 is used to transport the care receiver from the living room to a bathroom, dining room, or toilet.

[0021] The nursing device 1 supports the upper body of the person being cared for, and assists in the standing up action from the sitting position to the standing position and the sitting down action from the standing position to the sitting position. Here, the standing position refers to the position in which the buttocks are lifted from the seat surface and the legs are extended, including the standing position and the bending position. That is, the standing position includes the standing position in which the upper body is roughly upright, and the forward bending position in which the upper body is leaning forward. Moreover, in order to improve the passability, the nursing device 1 has improved the structure of the casters compared to the prior art. Figure 1 and Figure 2 As shown, the nursing device 1 is composed of a base 2, a footrest member 3, an arm member 5, a support member 6, a driving unit 7, and a control unit (not shown).

[0022] The base 2 is the area on which the person being cared for rests. The base 2 is equipped with a footrest 3, an arm member 5, and a drive unit 7. The base 2 is formed by a pair of left and right pipe frames 21, a pair of left and right assembly frames 22, a pair of left and right front plate frames 23, and a rear plate frame 24. The pipe frames 21 are formed by bending metal pipes. The middle portions 212 of the left and right pipe frames 21 extend horizontally in the front-to-back direction at a position slightly higher than the ground S, and are arranged in parallel and spaced apart from each other. The front portion 211 of the pipe frame 21 is bent upward. A pair of left and right assembly frames 22 in the shape of upright plates are provided in front of the front portions 211 of the pair of pipe frames 21.

[0023] A swing support 29 is provided on each of the pair of assembly frames 22. A pair of left and right front casters 25 are provided below the pair of assembly frames 22. Specifically, the front casters 25 are located at the front of the base 2. A pair of left and right position adjustment members 281 are provided at the upper ends of the front portions 211 of the pair of pipe frames 21. The position adjustment members 281 are manual adjustment mechanisms that allow a caregiver or the like to adjust the front-to-back position of the knee abutment member 28 to suit the care recipient's physique, etc.

[0024] The knee abutment component 28 is located above the middle portion 212 of the tube frame 21 and is a portion for the knees of the person being cared for to abut. The position of the knees is determined by the knee abutment component 28, and the standing-up and sitting-down movements of the person being cared for are stabilized. The knee abutment component 28 is formed by a base plate 282, a knee abutment body 283, and two connecting rods 284. The base plate 282 is formed using a metal plate material in a manner extending in the left and right directions and is arranged slightly forward of the vertical direction. The knee abutment body 283 is formed of elastically deformable polyurethane foam and is mounted on the rear side of the base plate 282. The two connecting rods 284 are formed using metal rods to connect the base plate 282 to the left and right position adjustment parts 281.

[0025] like Figure 3 As shown, the middle portion 212 of the pipe frame 21 is connected by an auxiliary pipe 214 extending in the left-right direction. The auxiliary pipe 214 is made of the same material as the pipe frame 21 and has the same diameter. A drive unit mounting seat 216 is provided between the left and right middle portions 212 on the front side of the auxiliary pipe 214. The lower portion of the drive unit 7 is mounted on the drive unit mounting seat 216. The rear portions 213 of the left and right pair of pipe frames 21 are formed by bending inward. The bent ends of the left and right rear portions 213 are connected and integrated. The connection between the middle portion 212 and the auxiliary pipe 214 and the connection between the rear portions 213 are connected, for example, by welding.

[0026] The rear plate frame 24 is formed of a metal plate-shaped member that is elongated in the left-right direction. It is fixed to the upper side of the rear portion 213 of the pipe frame 21 by welding. A pair of left and right rear casters 27 are provided on the lower surface of the rear portion of the rear plate frame 24. Specifically, the rear casters 27 are provided at the rear of the base 2 in the direction of boarding.

[0027] The left and right front plate frames 23 are each formed using a metal plate-shaped member. The front plate frames 23 are secured to the front of the middle portion 212 of the pipe frame 21 by welding and are configured to extend outward. Caster mounting holes 231 are provided on the outer sides of the left and right front plate frames 23. A pair of left and right intermediate casters 26 are provided below the left and right caster mounting holes 231. Specifically, the intermediate casters 26 are positioned between the rear casters 27 and the front casters 25 of the base 2.

[0028] The footrest component 3 is a roughly thin plate-shaped portion on which the caregiver places his or her feet. In order to improve the mechanical strength, a lattice-shaped intersecting protrusion 34 is provided on the lower surface of the footrest component 3. A pair of left and right U-shaped mounting and disassembly grooves 30 for the tube frame 21 to be inserted are provided on the front edge of the footrest component 3. In addition, a pair of left and right mounting and disassembly portions 35 for the tube frame 21 to be inserted are provided on the lower surface of the footrest component 3. Each mounting and disassembly portion 35 is composed of a pair of gripping claws that can be elastically deformed in a manner that increases or decreases the separation distance between the front ends. The caregiver lowers the footrest component 3 and inserts the tube frame 21 into the mounting and disassembly groove 30 and the mounting and disassembly portion 35, thereby enabling the footrest component 3 to be installed on the base 2 without using tools.

[0029] On the upper surface of the footrest 3, a plurality of protrusions 37 are regularly arranged to prevent the feet of the caregiver from slipping. The footrest 3 has an inclination that becomes lower from the center portion 31 in the left-right direction toward the left peripheral portion 32 and the right peripheral portion 33, at least when the caregiver is not placing his feet. Therefore, when the care device 1 is used in a bathroom or the like, even if water drops fall on the upper surface of the footrest 3, the water drops will flow out of the device along the inclination. In addition, when the caregiver places his feet, the footrest 3 elastically deforms in such a way that the inclination becomes gentler. As a result, even when the caregiver is riding, water drops on the footrest 3 automatically flow out of the device. In addition, since the inclination of the footrest 3 becomes gentle, the caregiver will not feel discomfort on the soles of their feet.

[0030] like Figure 1 As shown in FIG, the arm member 5 is formed into a shape that is bent in the middle when viewed from the side. Figure 1 and Figure 2 In the figure, the outer cover of the arm part 5 is omitted. A swing shaft 51 is provided at the lower part of the arm part 5. The swing shaft 51 is supported by the swing support seat 29 of the left and right assembly frames 22 in a swingable manner. In order to limit the swing angle range of the arm part 5, a stopper mechanism (not shown) is provided near the swing support seat 29. As a result, the arm part 5 can swing forward and upward and backward and downward with the swing support seat 29 of the base 2 as the swing center. The arm part 5 swings forward and upward when the person being cared for stands up ( Figure 1 Furthermore, arm member 5 swings rearward and downward when the care receiver takes a seat.

[0031] A battery and a linkage mechanism (not shown) are housed within the arm member 5. The battery serves as a power source for the drive unit 7 and the control unit. A swing member 52 is provided on the rear side of the upper portion of the arm member 5. The swing member 52 swings relative to the arm member 5. However, in the initial state before the care recipient comes into contact with the support member 6, the swing member 52 is restrained by the linkage mechanism and does not swing. In addition, the applicant of this application disclosed a detailed structural example of the linkage mechanism in International Publication No. 2018 / 167856.

[0032] The swing member 52 has a base plate 53 on its rear side. The base plate 53 is formed into a generally rectangular shape using a rigid metal or resin plate. The base plate 53 has a handle 54 on its front surface. The handle 54 is formed into a generally rectangular frame shape and extends upward from the arm member 5. The handle 54 is gripped by the caregiver and is also the part the caregiver grips to move the nursing device 1.

[0033] The support member 6 is provided on the rear side of the base plate 53. The support member 6 supports a portion of the care recipient's body and moves relative to the base 2. The support member 6 is configured to include an upper body support portion 61 and a pair of left and right armpit support portions 62. The upper body support portion 61 is attached to the rear surface of the base plate 53. The upper body support portion 61 is formed by laminating a hard cushioning member and a soft cushioning member (not shown). The upper body support portion 61 supports the care recipient's upper body, primarily from the chest to the vicinity of the abdomen.

[0034] A pair of left and right armpit supports 62 are attached to the base plate 53 and are located on either side of the upper body support 61. The armpit supports 62 are formed into an L-shape bent at an obtuse angle. They are formed from a core member and peripheral members (not shown). The armpit supports 62 extend under the armpits of the care recipient to support their upper body. The upper body support 61 and armpit supports 62 may also be covered with protective covers made of cloth or leather.

[0035] The drive unit 7 drives the arm member 5 and the support member 6. A linear actuator having a fixed portion 71 and a movable portion 72 is used as the drive unit 7. The fixed portion 71 is a cylindrical member with a step that is long in the vertical direction and has an opening at the top. The lower end of the fixed portion 71 is attached to the drive unit mounting seat 216 of the base 2. The movable portion 72 is a thin, round rod-shaped member that is long in the vertical direction. The upper end of the movable portion 72 is connected to a link mechanism. The lower portion of the movable portion 72 is inserted into the opening of the fixed portion 71.

[0036] A motor 711 is provided in front of the thick-diameter portion at the bottom of the fixed portion 71. The motor 711 drives the extension and contraction of the movable portion 72 by switching the direction of the current supplied by the control unit. As a result, the movable portion 72 performs telescopic movement relative to the fixed portion 71. Furthermore, a bellows 81 is provided to cover the sliding portion where the fixed portion 71 and the movable portion 72 slide, thereby preventing water from getting on them. This improves the water resistance of the nursing device 1. The drive unit 7 performs a first extension movement from the minimum length to a predetermined mid-length, and a second extension movement from the mid-length to the maximum length.

[0037] By the first extension action of the drive unit 7, the support member 6 is driven via the link mechanism and swings forward and upward. By the second extension action of the drive unit 7, the arm member 5 is driven via the link mechanism and swings forward and upward. In this way, the support member 6 moves upward and also forward relative to the base 2. Thus, the nursing device 1 assists the person being cared for in standing up. In addition, by the contraction action of the drive unit 7, the arm member 5 swings backward and downward, and the support member 6 moves downward and also backward. Thus, the nursing device 1 assists the person being cared for in sitting down.

[0038] The control unit, not shown in the figure, is composed of an operator and a control main body. The operator has an up button and a down button for operating the drive unit 7. The operator is operated by an auxiliary caregiver. The control main body is a computer device having a CPU and operating through software. The control main body controls the current flowing through the motor of the drive unit 7 based on the operation information of the up button and the down button. In this way, the action and stop of the drive unit 7, as well as the switching between the extension action and the contraction action, are controlled. From the description so far, it can be seen that the arm part 5, the support part 6 and the drive unit 7 constitute a nursing execution part that assists the standing up action and the sitting down action of the person being cared for.

[0039] 2. Caster wheel diameter

[0040] Here, reference Figure 4 The wheel diameter (diameter) of the caster is described. Generally speaking, the larger the wheel diameter DF of the front caster 25, the better the drivability (passability) of the nursing device 1 when it moves forward. In addition, in the front caster 25, there is almost no need to consider interference with other devices such as a wheelchair, so it is preferred that the wheel diameter DF of the front caster 25 is as large as possible. Specifically, the wheel diameter DF is preferably greater than 90 mm, and is set to 100 mm in this embodiment. As a result, the nursing device 1 has good passability, such as traveling over steps and bumps on an undesirable ground surface S, and traveling stably on a ground surface S that is easily soaked and slippery.

[0041] Next, the smaller the wheel diameter DR of the rear caster 27, the closer the footrest part 3 can be to the ground S and configured lower, which can suppress interference with other devices. In addition, by configuring the footrest part 3 lower, the effect of facilitating the boarding movement of the person being cared for is produced. The height at which the footrest part 3 is configured is restricted by the rear caster 27 provided on the lower side, and in the previous structure, it is also restricted by the intermediate caster 26. In this embodiment, the front portion of the upper surface of the footrest part 3 where the feet are not placed is provided as a protruding portion protruding upward, and the intermediate caster 26 is provided on the lower side of the protruding portion. As a result, the height of the placement surface on the upper surface of the footrest part 3 where the feet can be placed can be lower than the upper end of the intermediate caster 26 without being restricted by the wheel diameter DM of the intermediate caster 26. In other words, the height dimension H of the upper surface of the footrest part 3 relative to the ground S can be made smaller than the wheel diameter DM of the intermediate caster 26.

[0042] Specifically, the wheel diameter DR of the rear caster 27 is preferably 60 mm or less, and in this embodiment is set to 50 mm. Therefore, the height dimension H of the upper surface of the footrest 3 does not significantly exceed 50 mm. Thus, when the nursing device 1 is brought close to a care receiver M seated in a wheelchair 9, the footrest 3 can be inserted underneath without interfering with the pair of left and right footrests 91 of the wheelchair 9. As a result, the nursing device 1 can be brought sufficiently close to the care receiver M, making it easier for the care receiver M to board the wheelchair.

[0043] Next, the wheel diameter DM of the middle caster 26 is set to take into account both the improvement of passability and the suppression of interference with other devices. Regarding the improvement of passability, in an undesirable ground S, the front caster 25 may not always be able to exert good passability, and may temporarily float from the ground S due to the influence of steps and bumps. In this case, the middle caster 26 assists the front caster 25, or replaces the front caster 25 to take on the role of maintaining good passability. Therefore, from the perspective of passability, it is preferred that the wheel diameter DM of the middle caster 26 be larger, and the maximum can also be consistent with the wheel diameter DF of the front caster 25.

[0044] On the other hand, as a means of suppressing interference with other devices, it is assumed that the footrest part 3 is deeply inserted between the left and right front wheels 92 of the wheelchair 9. In this case, the protruding portion of the footrest part 3 or the intermediate caster 26 may interfere with the wheelchair 9. Therefore, from the perspective of suppressing interference, it is preferable to set the wheel diameter DM of the intermediate caster 26 to be smaller, or it can be reduced to a size close to the wheel diameter DR of the rear caster 27. However, making the wheel diameter DM consistent with the wheel diameter DR as disclosed in Patent Document 1 cannot take into account the improvement of passability and therefore cannot be adopted. In addition, by reducing the wheel diameter DM of the intermediate caster 26, it is advantageous in terms of the total weight and manufacturing cost of the nursing device 1. When comprehensively considering the above matters, it is preferred that the wheel diameter DM of the intermediate caster 26 is smaller than the wheel diameter DF and larger than the wheel diameter DR. In this embodiment, the wheel diameter DM is set to 75 mm.

[0045] The three wheel diameters (DF, DR, and DM) described above achieve a balance between improving the maneuverability of the nursing device 1 and preventing interference with other devices. Furthermore, the pair of front casters 25, the pair of middle casters 26, and the pair of rear casters 27 each have steering capabilities. This allows the nursing device 1 to move not only straight and around, but also sideways and turn in place, enabling free directional changes and movement even on narrow surfaces like toilets and bathrooms.

[0046] 3. Caster locking mechanism

[0047] Next, the locking mechanism of the casters will be described. When considering an undesirable ground surface S with steps and bumps, it is believed that the locking mechanism of the front casters disclosed in Patent Document 1 is insufficient in terms of the stability of the static state of the nursing device 1. That is, depending on the condition of the ground surface S, it is assumed that the left and right pair of front casters float from the ground surface S, and one or both of the pair of locking mechanisms cannot fully exert their locking function. In addition, when the nursing device 1 is used in the bathroom, the casters are prone to slipping due to water. In these cases, the static state of the nursing device 1 becomes unstable, which may cause obstacles to the movements of the person being cared for. Therefore, it is necessary to improve the locking mechanism of four or more of the six casters including the front casters 25, the middle casters 26 and the rear casters 27.

[0048] In this embodiment, a locking mechanism 251 is provided on each of the left and right front casters 25, and a locking mechanism 261 is provided on each of the left and right middle casters 26. A total of four locking mechanisms (251, 261) are foot-operated, each of which is locked and released by the caregiver's foot. Casters equipped with foot-operated locking mechanisms (251, 261) are widely available in various models and are inexpensive. Therefore, the nursing device 1 has a wide range of design freedoms, and even in embodiments where the number of locking mechanisms (251, 261) is increased compared to conventional designs, it is possible to suppress cost increases.

[0049] The reason for not providing a locking mechanism on the rear caster 27 is that, even if a locking mechanism were provided, locking and unlocking the rear caster 27 would be difficult to perform using a foot pedal if the footrest 3 were in proximity with or interfering with another device, such as the wheelchair 9. Furthermore, it is believed that even on a floor S with steps or uneven surfaces, at least two of the front casters 25 and the middle casters 26 would be in contact with the floor S, enabling the locking function to be achieved through a locking operation. Therefore, the necessity for a locking mechanism on the rear caster 27 is minimal, and it is considered to be redundant. Therefore, from a cost-effective perspective, it is preferably omitted.

[0050] In addition, general locking mechanisms have various types, methods and structures. The locking mechanisms (251, 261) used in the embodiment lock the rotation and direction change of the caster in the locked state after the locking operation. That is, the locking mechanism (251, 261) limits the rotation of the caster around the axle extending in the horizontal direction in the locked state, and limits the rotation of the axle in the horizontal plane without changing the direction of the caster. As a result, there will be no trouble (trouble) such as the direction of the caster changing after the locking operation and it being difficult to perform the release operation. The nursing device 1 has four or more locking mechanisms (251, 261). On the ground S with steps and bumps, at least two of the four locking mechanisms (251, 261) perform the locking function, so that the static state is stable.

[0051] The nursing device 1 of the embodiment includes intermediate casters 26 having a larger wheel diameter than the rear casters 27. This prevents interference with other devices such as the wheelchair 9 and improves the maneuverability of the nursing device 1 when traveling over steps and uneven surfaces on the floor S. Furthermore, by providing a total of four locking mechanisms (251, 261) on the pair of front casters 25 and the pair of intermediate casters 26, the stationary state of the nursing device 1 can be stabilized compared to conventional methods even on uneven surfaces such as the uneven floor S.

[0052] 4.Deformation method

[0053] Next, refer to Figure 5The following describes a modified form of the locking mechanisms (251, 261). In this modified form, a locking mechanism 252 is provided on each of the left and right front casters 25, and a locking mechanism 262 is provided on each of the left and right middle casters 26. Unlike the pedal-operated locking mechanisms (251, 261) of the embodiment, these four locking mechanisms (252, 262) are remotely operated. For example, the locking mechanisms (252, 262) can be remotely locked and unlocked using locking wires (253, 263).

[0054] Specifically, a locking lever 85 is provided at a suitable location on the upper front portion of the arm member 5, where it is easily accessible to the caregiver and difficult for the caregiver to reach. The locking lever 85 may be positioned at other preferred locations. The locking lever 85 extends four locking wires (253, 263). Two locking wires 253 are operably connected to the locking mechanisms 252 of the pair of front casters 25. The other two locking wires 263 are operably connected to the locking mechanisms 262 of the pair of middle casters 26.

[0055] When the caregiver pushes the lock lever 85 in for the first time, the four lock wires (253, 263) are simultaneously pulled in a direction toward the lock lever 85. As a result, the lock wires (253, 263) are pulled in each of the four lock mechanisms (252, 262), performing a locking operation. Even if the caregiver releases their hand from the lock lever 85, the locked state of the lock mechanisms (252, 262) after the locking operation is maintained. In other words, the lock lever 85 uses an alternating lever arrangement.

[0056] By the caregiver's second lever operation, the four locking wires (253, 263) are pulled out together in a direction away from the locking rod 85. As a result, in each of the four locking mechanisms (252, 262), the locking wires (253, 263) are returned and the release operation is performed. Even if the caregiver takes his hand off the locking rod 85, the released state of the locking mechanism (252, 262) after the release operation is maintained. Thereafter, each time the lever operation is performed, the locking operation and the release operation of the locking mechanism (252, 262) are alternately performed remotely. According to the modified embodiment, as in the embodiment, the stationary state of the nursing device 1 can be stabilized compared to the past. In addition, the four locking mechanisms (252, 262) can be operated together using one locking rod 85, so the operability is very good.

[0057] 5. Variations and Applications of the Implementation Methods

[0058] In addition, the nursing device 1 of the embodiment is suitable for use in a bathroom or shower room, and regardless of the place of use, it produces an effect of improving passability and stabilizing the static state compared to the past. In addition, the front caster 25, the middle caster 26 and the rear caster 27 of the nursing device 1 are respectively provided with a left and right pair, but it can also be a structure with five casters in which any one caster is not a left and right pair but a central one. Moreover, in the nursing device with five casters, by providing a locking mechanism on three casters, the static state can be stabilized. On the other hand, the nursing device can also have more than seven casters and more than four locking mechanisms. In addition, in the application method, a remote-operated locking mechanism can also be provided on the rear caster 27, and operated from the locking rod 85. In addition, the embodiment and application method can be variously modified and applied.

[0059] Description of Reference Numerals

[0060] 1: Nursing device; 2: Base; 21: Tube frame; 25: Front caster; 251, 252: Locking mechanism; 253: Locking line; 26: Middle caster; 261, 262: Locking mechanism; 263: Locking line; 27: Rear caster; 3: Foot placement part; 5: Arm part; 6: Support part; 7: Drive part; 71: Fixed part; 72: Movable part; 81: Bellows; 85: Locking rod; 9: Wheelchair; DF, DM, DR: Wheel diameter; H: Height dimension; M: Person being cared for.

Claims

1. A nursing device, characterized in that: include: Abutment, for the person being cared for; rear casters, provided at the rear of the base in the boarding direction; a front caster wheel, provided at the front portion of the base, having a wheel diameter larger than that of the rear caster wheel; as well as The middle caster is provided between the rear caster and the front caster of the base and has a wheel diameter larger than that of the rear caster.

2. The nursing device according to claim 1, characterized in that The wheel diameter of the rear caster is less than 60 mm, and the wheel diameter of the front caster is greater than 90 mm.

3. The nursing device according to claim 1 or 2, characterized in that The nursing device includes four or more locking mechanisms, and the four or more locking mechanisms are respectively provided on four or more casters among a plurality of casters including the rear caster, the front caster, and the middle caster, to lock the casters.

4. A nursing device, characterized in that: include: Abutment, for the person being cared for; rear casters, provided at the rear of the base in the boarding direction; Front casters, arranged at the front of the base; an intermediate caster disposed between the rear caster and the front caster of the base; and More than four locking mechanisms are respectively provided on more than four casters among a plurality of casters including the rear caster, the front caster and the middle caster, for locking the casters.

5. The nursing device according to claim 4, characterized in that The four locking mechanisms are arranged on the left and right pair of front casters and the left and right pair of middle casters.

6. The nursing device according to claim 4 or 5, characterized in that At least one of the four or more locking mechanisms locks the rotation and orientation change of the caster.

7. The nursing device according to claim 4 or 5, characterized in that At least one of the four or more locking mechanisms is capable of remote operation.

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