JP5917229B2 - Bathing wheelchair - Google Patents

Description

  The present invention relates to a bathing wheelchair suitable for use by a person who is inconvenient and needs assistance (hereinafter referred to as a person requiring assistance).

  2. Description of the Related Art Conventionally, a bathing apparatus that bathes a person who needs assistance on a wheelchair is known (see, for example, Patent Documents 1 and 2). Such a bathing apparatus has a dedicated wheelchair (bathing wheelchair) separately from the bathtub. The bathing wheelchair disclosed in Patent Documents 1 and 2 includes a cart portion with casters and a chair portion that is disposed on the cart portion and on which a bather sits. There are two types of wheelchairs for bathing (for example, see Patent Document 1) in which the carriage part and the chair part do not separate from each other, and the type in which the carriage part and the chair part separate (for example, see Patent Document 2).

Japanese Patent No. 2572559 JP 2008-149000 A

  By the way, for example, the present applicant is considering improvement of a bathing apparatus that allows a bather to take a bath while being placed on a wheelchair so that the bather can bathe safely and comfortably and can reduce the labor of the bather. . Along with this improvement, we are also considering improving the bathing wheelchair.

  The bathing wheelchair under consideration is switched to three postures (first to third postures). A 1st attitude | position is an attitude | position used when transferring a care recipient mainly to a bathing apparatus. A 2nd attitude | position is an attitude | position used when bathing mainly a care recipient. A 3rd attitude | position is an attitude | position used when performing a washing operation mainly.

  A bathing wheelchair that can be switched to such three postures can be expected to be convenient for both the care recipient and the caregiver. However, it has been found that there is a point to be devised for safety when switching the posture when adopting a configuration that can switch to such three postures.

  In view of the above points, an object of the present invention is to provide a bathing wheelchair that is easy to use and highly safe for both the care recipient and the caregiver.

  In order to achieve the above object, a bathing wheelchair according to the present invention includes a cart unit having a caster and a chair unit disposed on the cart unit, the chair unit having a first posture, For switching from the second posture to the third posture, and for switching from the third posture to the second posture. It is the structure (1st structure) in which operation of this is impossible.

  In this configuration, the bathing wheelchair is provided so as to be switchable between three postures. For this reason, it is possible to provide a bathing wheelchair that both the care recipient and the caregiver feel comfortable to use. Further, by making certain operations impossible among the operations for switching the posture, it is possible to improve the safety of the person requiring assistance.

  In the bathing wheelchair having the first configuration described above, the chair portion is provided so that the entire chair portion is rotatable with respect to the carriage portion, and the chair portion is rotated with respect to the seat surface portion and the seat surface portion. A backrest portion that is movably provided; the second posture is a posture in which the entire chair portion is rotated from the first posture; and the third posture is the first posture. It is good also as a structure (2nd structure) which is the attitude | position from which the inclination with respect to the said seat surface part of the said backrest part was changed. According to the present configuration, it is possible to provide a bathing wheelchair in which a person requiring assistance and / or a caregiver can feel comfortably for each operation such as transfer to a bathing apparatus, bathing, and washing. In addition, it is preferable that the third posture is a posture in which the inclination of the footrest portion provided so as to be rotatable with respect to the seat surface portion is changed in addition to the backrest portion.

  The bathing wheelchair having the first or second configuration includes a first operation lever used for switching to the second posture and a second operation lever used for switching to the third posture. A first safety mechanism that disables the switching operation by the second operation lever when the second posture is set, and a switching by the first operation lever when the third posture is set. A second safety mechanism that disables the operation (third configuration). According to this structure, it is easy to suppress the number of parts added in order to introduce a safety mechanism.

  In the bathing wheelchair having the third configuration, the first safety mechanism includes a first lock shaft that moves in conjunction with the second operation lever when the second posture is set, and the first safety mechanism. A first restricting portion that disables disengagement of the first engaging groove that engages with the lock shaft of the second safety mechanism, and the second safety mechanism has the third posture when the third posture is reached. A second lock shaft that moves in conjunction with the first control lever, and a second restricting portion that disables disengagement between the second engagement groove that engages with the second lock shaft ( (4th structure) may be sufficient.

  In the bathing wheelchair having any one of the first to fourth configurations, the first posture is a posture used when a bather is transferred, and the second posture is used when bathing. The third posture may be a configuration (fifth configuration) that is a posture used during the washing operation.

  According to the present invention, it is possible to provide a bathing wheelchair that is easy to use and highly safe for both the care recipient and the caregiver.

Schematic side view showing a bathing wheelchair according to an embodiment of the present invention and a bathing apparatus to which the bathing wheelchair is applied The schematic side view which shows the attitude | position at the time of bathing in the bathing apparatus with which the wheelchair for bathing which concerns on embodiment of this invention is applied Schematic top view of a bathing apparatus to which a bathing wheelchair according to an embodiment of the present invention is applied The schematic side view in case the wheelchair for bathing which concerns on embodiment of this invention is a movement attitude | position The schematic front view in case the wheelchair for bathing concerning the embodiment of the present invention is a movement posture Schematic rear view when a wheelchair for bathing according to an embodiment of the present invention is in a moving posture Schematic side view when the wheelchair for bathing according to the embodiment of the present invention is tilted The schematic side view in case the wheelchair for bathing concerning the embodiment of the present invention is a full reclining posture The schematic plan view which expanded and showed a part of the back side of the wheelchair for bathing which concerns on embodiment of this invention FIG. 3 is a schematic cross-sectional view for explaining an operation when switching from a moving posture to a tilt posture in a bathing wheelchair according to an embodiment of the present invention. 9 is a schematic cross-sectional view at the ZZ position in FIG. 9 when the bathing wheelchair according to the embodiment of the present invention is in a tilted posture. In the wheelchair for bathing concerning the embodiment of the present invention, a schematic sectional view for explaining operation in the case of switching from a movement posture to a full reclining posture 9 is a schematic cross-sectional view at the XX position in FIG. 9 when the bathing wheelchair according to the embodiment of the present invention is in a full reclining posture. The figure which shows the state at the time of operating a tilt operation lever in the arrow C direction from the state of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a bathing wheelchair according to an embodiment of the present invention will be described in detail with reference to the drawings.

<Outline of bathing device>
First, a configuration example of a bathing apparatus to which a bathing wheelchair according to an embodiment of the present invention is applied will be briefly described with reference to FIGS. 1 to 3. FIG. 1 is a schematic side view showing a bathing wheelchair 1 according to an embodiment of the present invention and a bathing apparatus 100 to which the bathing wheelchair 1 is applied. FIG. 2 is a schematic side view showing a posture at the time of bathing in the bathing apparatus 100 to which the bathing wheelchair 1 according to the embodiment of the present invention is applied. FIG. 3 is a schematic top view of the bathing apparatus 1 to which the bathing wheelchair according to the embodiment of the present invention is applied. FIG. 3 is a top view of bathing apparatus 100 in the state shown in FIG.

  As shown in FIGS. 1 and 2, the bathing apparatus 100 is provided so as to be able to receive the fixed base 101 supported by the floor surface F and the bathing wheelchair 1, and is rotated in the vertical direction with respect to the fixed base 101. And a movable bathtub 102 that can be provided. The driving means for the movable bathtub 102 is not particularly limited, and for example, a hydraulic cylinder, an air cylinder, or the like can be used.

  When the movable bathtub 102 receives the bathing wheelchair 1 in the bathtub, the bathtub upper surface 102a is inclined with respect to a horizontal plane (a plane parallel to the floor F) (the state shown in FIG. 1). As shown in FIG. 3, the movable bathtub 102 has a notch 103 formed from one end 102 b in the longitudinal direction (corresponding to the horizontal direction in FIG. 3) toward the inside.

  When the bathing wheelchair 1 movably provided by the cart unit 10 with casters is moved toward the movable bathtub 102, the support rod 13 provided in the cart unit 10 enters the notch 103. As the support rod 13 enters the cutout portion 103, the chair portion 20 disposed on the carriage portion 10 enters the bathtub of the movable bathtub 102. At this time, the lower part side of the carriage unit 10 sinks under the movable bathtub 102. Further, the bathing wheelchair 1 is moved by an assistant.

  When the support rod 13 reaches a predetermined position on the back side of the notch 103, the notch 103 is liquid-tightly closed by a seal member (not shown). In this state, the movable bathtub 102 is rotated so that the bathtub upper surface 102a is parallel to the horizontal plane (see FIG. 2). As the movable bathtub 102 rotates, the bathing wheelchair 1 sandwiched between the seal members is also lifted up and rotated without the carriage unit 10 and the chair unit 20 being separated.

  In a state where the bathtub upper surface 102a of the movable bathtub 102 is horizontal (state shown in FIG. 2), hot water is supplied into the movable bathtub 102, and the bather sitting on the chair portion 20 of the bathing wheelchair 1 enters the bathing state. . When the bather on the wheelchair 1 for bathing leaves after bathing, the operation opposite to the above-described operation is performed. That is, the hot water in the bathtub is first removed, and the movable bathtub 102 is inclined by a predetermined angle from the horizontal state. And the closed state by a sealing member is open | released, and a bather retreats out of a bathtub, when an assistant moves the wheelchair 1 for bathing out of a bathtub.

<Composition of wheelchair for bathing>
Next, the bathing wheelchair 1 applied to the bathing apparatus 100 as described above will be described in detail. The bathing wheelchair 1 is configured to be switched to three postures in consideration of, for example, a bather (a person who needs assistance) and the convenience of the assistant. Among the three postures, a moving posture that is mainly used when a bather who sits (sits down) on the bathing wheelchair 1 is transported (for example, transport between the bed and the bathing device 100). Is included. This moving posture corresponds to the first posture of the present invention.

  FIG. 4 is a schematic side view when the bathing wheelchair 1 according to the embodiment of the present invention is in a moving posture. FIG. 5 is a schematic front view of the bathing wheelchair 1 according to the embodiment of the present invention in a moving posture. FIG. 6 is a schematic rear view when the bathing wheelchair 1 according to the embodiment of the present invention is in a moving posture. As shown in FIGS. 4 to 6, the bathing wheelchair 1 includes a carriage unit 10 and a chair unit 20 on which a bather is placed.

  The carriage unit 10 includes a lower frame unit 11, an upper frame unit 12, a support rod 13 that is erected on the lower frame unit 11 and supports the upper frame unit 12, and is attached to the lower frame unit 11. And four casters 14 that can move.

  The chair part 20 is disposed on the carriage part 10 by being supported by the upper frame part 12. The chair portion 20 includes a seat surface portion 21 on which a bather places a buttock, a backrest portion 22 that serves as a backrest of the bather, and a footrest portion 23 on which the bather places a lower limb. The seat surface portion 21 is attached to the upper frame portion 12 (cart 10) so as to be rotatable in the vertical direction. The backrest portion 22 and the foot support portion 23 are attached to the seat surface portion 21 so as to be rotatable in the vertical direction.

  Handrails 24 are provided on the left and right sides of the seat surface portion 21 (expressions taking FIG. 5 and FIG. 6 in mind). The handrail 24 is fixed to the seat surface portion 21 and rotates as the seat surface portion 21 rotates. A pillow part 25 is attached to the upper side of the backrest part 22 so that the height can be adjusted. In addition, side support portions 26 that support the upper limbs are provided on the left and right sides of the backrest portion 22 (expressions with FIGS. 5 and 6 in mind). The pillow part 25 and the side support part 26 rotate as the backrest part 22 rotates.

  As shown in FIG. 6, a traveling handle 40 that is used when an assistant travels the bathing wheelchair 1 is provided on the upper rear side of the bathing wheelchair 1. In addition, as shown in FIG. 6, a tilt operation lever 50 for placing the bathing wheelchair 1 in a tilted posture is provided on the right side of the back surface of the bathing wheelchair 1. Moreover, as shown in FIG. 6, the full reclining operation lever 60 for making the bathing wheelchair 1 into a full reclining attitude | position is provided in the back left side of the bathing wheelchair 1. As shown in FIG. The positions where the tilt operation lever 50 and the full reclining operation lever 60 are provided may be interchanged. The tilt operation lever 50 is an example of the first operation lever of the present invention. The full reclining operation lever 60 is an example of the second operation lever of the present invention.

  The tilt posture is a posture in which the entire chair portion 20 is rotated in the vertical direction with respect to the carriage portion 10 from the moving posture, and corresponds to the state shown in FIG. This tilt posture is a posture included in the above-described three postures, and is a posture mainly used when bathing using the bathing apparatus 100. The bathing wheelchair 1 shown in FIG. 1 is tilted.

  The rotation direction of the chair unit 20 relative to the carriage unit 10 when changing from the moving posture to the tilting posture is a direction in which the bather sitting on the chair unit 20 falls backward (a direction indicated by an arrow r in FIG. 4). The amount of rotation of the chair unit 20 with respect to the carriage unit 10 is not particularly limited, but can be about 20 °, for example. In the tilt posture and the moving posture, the angles of the backrest portion 22 and the footrest portion 23 with respect to the seat surface portion 21 are the same. Further, this tilt attitude corresponds to the second attitude of the present invention.

  The full reclining posture is a posture in which the inclination of the backrest portion 22 and the footrest portion 23 is changed while the state of the seating surface portion 21 is the same (state where the seating surface is horizontal) when compared with the moving posture, The state shown in FIG. This full reclining posture is a posture included in the above-described three postures, and is a posture mainly used in the washing operation. This full reclining posture corresponds to the third posture of the present invention. When switching from the moving posture to the full reclining posture, the handrail 24 is not changed in inclination from the moving posture. For this reason, the handrail 24 functions as a side fence that prevents the bather (assistant) from falling off the wheelchair during the washing operation.

  When the moving posture is changed to the full reclining posture, the rotation direction of the backrest portion 22 and the footrest portion 23 that rotate in the vertical direction with respect to the seat surface portion 21 is the same direction, and the bather sitting on the chair portion 20 faces backward. In a direction (indicated by arrow r in FIG. 4). Although it does not specifically limit in a full reclining attitude | position, The backrest part 22 can be made into the state inclined about 15 degrees, for example with respect to the seat surface part 21 (horizontal state).

  In addition, although the inclination angle of the footrest portion 23 is changed so that the bather has a comfortable posture in accordance with the change of the inclination angle of the backrest portion 22, the angle of the footrest portion 23 may be changed depending on circumstances. Changes need not be made. In detail, the foot receiving portion 23 includes a legrest 231 that can be rotated in the vertical direction with respect to the seat surface portion 21, and a footrest 232 that can be rotated in the vertical direction with respect to the legrest 231. When changing from the moving posture to the full reclining posture, the legrest 231 rotates with respect to the seat surface portion 21 and the footrest 232 rotates with respect to the legrest 231.

  The bathing wheelchair 1 is provided so that an operation for switching from a moving posture to a tilting posture and a reverse operation (from a tilting posture to a moving posture) can be performed. The bathing wheelchair 1 is provided so that an operation for switching from a moving posture to a full reclining posture and vice versa (an operation from a full reclining posture to a moving posture) can be performed.

  On the other hand, the bathing wheelchair 1 is provided with an operation for switching from a tilting posture to a full reclining posture and an operation for switching from a full reclining posture to a tilting posture are impossible. This considers, for example, the safety of a bather (a person who needs assistance). Hereinafter, this safety mechanism will be described in detail. FIG. 9 is a schematic plan view showing a part of the back side of the bathing wheelchair 1 according to the embodiment of the present invention in an enlarged manner, and is a view for clearly showing cutting positions in the cross-sectional views shown below. .

(First safety mechanism)
First, the first safety mechanism that disables the operation for switching from the tilt posture to the full reclining posture will be described.

  Prior to the description of the first safety mechanism, an operation for switching from the moving posture to the tilt posture will be described. FIG. 10 is a schematic cross-sectional view for explaining the operation in the case of switching from the moving posture to the tilt posture in the bathing wheelchair 1 according to the embodiment of the present invention, and is a cross-sectional view at the XX position in FIG. 9. . FIG. 10A is a diagram when the bathing wheelchair 1 is in a moving posture. FIG. 10B is a diagram illustrating a state in which the bathing wheelchair 1 is being switched from the moving posture to the tilting posture. FIG. 10C is a view when the bathing wheelchair 1 is in a tilted posture.

  As shown in FIG. 10, a substantially V-shaped connection fitting 51 is attached to the tip of a tilt operation lever 50 (see also FIG. 6) provided along the back surface of the backrest portion 22. The connection fitting 51 is attached to the tilt operation lever 50 so as to be rotatable in the vertical direction. A lock shaft 52 is provided at the distal end of the connection fitting 51 (the end opposite to the end connected to the tilt operation lever 50). A positioning plate 53 provided with two grooves 53 a and 53 b that engage with the lock shaft 52 is attached to the upper frame portion 12 (which constitutes the carriage portion 10).

  In the moving posture, as shown in FIG. 10A, the lock shaft 52 engages with the first groove 53 a of the positioning plate 53. For this reason, the whole chair part 20 does not rotate with respect to the trolley | bogie part 10, but a movement attitude | position can be maintained. A compression spring 54 is loosely fitted to the tip end side of the tilt operation lever 50, and the engagement between the lock shaft 52 and the first groove 53a is maintained by the urging force of the compression spring 54. Yes.

  When changing from the moving posture to the tilt posture, the tilt operation lever 50 is pulled up in the direction against the urging force of the compression spring 54 (the direction of the arrow A1 in FIG. 10B). By this operation, the lock shaft 52 attached to the distal end portion of the connection fitting 51 moves in a direction (in the direction of arrow A2 in FIG. 10B) that comes out of the first groove portion 53a. When the engagement between the lock shaft 52 and the first groove portion 53a is released, the entire chair portion 20 rotates in the direction of the arrow R1 in FIG. To do.

  By releasing the force applied to the tilt operation lever 50 after the rotation, the lock shaft 52 engages with the second groove 53b of the positioning plate 53 as shown in FIG. The engagement between the lock shaft 52 and the second groove 53b is maintained by the urging force of the compression spring 54, and the bathing wheelchair 1 is in a tilted posture.

  It should be noted that switching from the tilt posture to the moving posture is also performed using the tilt operation lever 50, and an operation reverse to the switching from the moving posture to the tilt posture may be performed. That is, by operating the tilt operation lever 50, the engagement between the lock shaft 52 and the second groove portion 53b is released, and the entire chair portion 20 is rotated about the rotation shaft 55 in the direction opposite to the arrow R1. What is necessary is just to obtain engagement with 52 and the 1st groove part 53a.

  FIG. 11 is a schematic cross-sectional view at the ZZ position of FIG. 9 when the bathing wheelchair 1 according to the embodiment of the present invention is in a tilted posture. When the bathing wheelchair 1 is shifted from the moving posture to the tilted posture (when the bathing wheelchair 1 is shifted from the state shown in FIG. 10B to the state shown in FIG. 10C), the pipe 71 attached to the seat surface portion 21 is Rotate together by turning the entire chair 20 to lower its position. The pipe 71 lowered in position presses the baffle plate 72 attached to the upper frame portion 12 so as to be rotatable in the vertical direction. The baffle plate 72 is attached to the upper frame portion 12 while being urged by a spring member 72a (see FIG. 12, for example, a tension spring), and the pipe 71 is against the urging force of the spring member 72a. 72 is pressed.

  By the way, as shown in FIG. 11, the full reclining operation lever 60 has a lock shaft 61 attached to the tip thereof. By engaging the lock shaft 61 with the groove 62a provided in the positioning plate 62 fixed to the seat surface portion 21, the rotation of the backrest portion 22 (also the foot support portion 23) with respect to the seat surface portion 21 is prohibited. The

  As described above, the baffle plate 72 is pressed by the pipe 71 when the bathing wheelchair 1 is shifted from the moving posture to the tilting posture. Then, the baffle plate 72 pressed by the pipe 71 is pushed down at the distal end side to reach a position where the movement of the lock shaft 61 accompanying the operation of the full reclining operation lever 60 is obstructed. For this reason, in the tilted posture, by operating the full reclining operation lever 60, the lock shaft 61 (an example of the first lock shaft of the present invention) and the groove 62a (an example of the first engagement groove of the present invention) The engagement cannot be released. That is, with the first safety mechanism including the pipe 71 and the baffle plate 72 (an example of the first restricting portion of the present invention), the bathing wheelchair 1 performs an operation for switching from the tilted posture to the full reclining posture. I can't do it.

  Note that by switching from the tilt posture to the moving posture, the pressing of the baffle plate 72 by the pipe 71 is released. For this reason, when returning to the moving posture, it is possible to switch to the full reclining posture by operating the full reclining operation lever 60.

(Second safety mechanism)
Next, a second safety mechanism that makes the operation for switching from the full reclining posture to the tilt posture impossible will be described.

  Prior to the description of the second safety mechanism, the operation when switching from the moving posture to the full reclining posture will be described. FIG. 12 is a schematic cross-sectional view for explaining an operation in the case of switching from the moving posture to the full reclining posture in the bathing wheelchair 1 according to the embodiment of the present invention, and is a cross-sectional view at the YY position in FIG. 9. is there. FIG. 12A is a diagram when the bathing wheelchair 1 is in a moving posture. FIG. 12B is a diagram illustrating a state in which the bathing wheelchair 1 is being switched from the moving posture to the full reclining posture. FIG.12 (c) is a figure in case the wheelchair 1 for a bathing is a full reclining attitude | position.

  As described above, in the moving posture, the lock shaft 61 of the full reclining operation lever 60 and the groove 62a of the positioning plate 62 are engaged (see FIG. 12A). For this reason, the movement posture is maintained without the backrest portion 22 (and the foot support portion 23) rotating relative to the seat surface portion 21. A compression spring 63 is loosely fitted on the front end side of the full reclining operation lever 60, and the engagement between the lock shaft 61 and the groove 62a is maintained by the urging force of the compression spring 63.

  When changing from the moving posture to the full reclining posture, the full reclining operation lever 60 is pulled up in the direction against the urging force of the compression spring 63 (the direction of arrow B in FIG. 12B). As a result of this operation, the lock shaft 61 moves in the direction of coming out of the groove 62a. When the engagement between the lock shaft 61 and the groove portion 62a is released, the backrest portion 22 rotates about the rotation shaft 64 in the R2 direction of FIG. In addition, the footrest portion 23 also rotates in conjunction with the rotation of the backrest portion 22.

  A positioning plate 65 provided with an engagement hole 65 a that engages with the lock shaft 61 is attached to the backrest portion 22. The engagement hole 65a has a long hole shape. When the backrest portion 22 is rotated around the rotation shaft 64, the positioning plate 65 and the seat surface portion 21 come into contact with each other at a predetermined position. And thereby, as shown in FIG.12 (c), the position (angular position) of the backrest part 22 is determined, and the bathing wheelchair 1 will be in a full reclining attitude | position.

  It should be noted that the switching from the full reclining posture to the moving posture may be performed such that the operation opposite to the switching from the moving posture to the full reclining posture is performed. That is, the backrest portion 22 may be rotated about the rotation shaft 64 in the direction opposite to the arrow R2 direction so that the engagement between the lock shaft 61 and the groove portion 62a is obtained.

  FIG. 13 is a schematic cross-sectional view at the XX position in FIG. 9 when the bathing wheelchair 1 according to the embodiment of the present invention is in a full reclining posture. FIG. 14 is a diagram showing a state when the tilt operation lever 50 is operated in the direction of arrow C from the state of FIG. To be precise, FIGS. 13 and 14 are cross-sectional views in a wider range than the position XX in FIG.

  When the bathing wheelchair 1 is shifted from the moving posture to the full reclining posture (when moving from the state shown in FIG. 12B to the state shown in FIG. 12C), the bathing wheelchair 1 is connected to the tilt operation lever 50. The metal fitting 51 rotates. Then, due to the action of the compression spring 54, the lock shaft 52 provided at the distal end portion of the connection fitting 51 is pushed to the farthest rearmost end of the first groove portion 53a (see FIG. 13). For this reason, if the engagement between the lock shaft 52 and the first groove portion 53a is to be released, a longer stroke than the stroke for moving the tilt operation lever 50 is required when changing the movement posture to the tilt posture.

  In the moving posture, due to the presence of the first metal fitting 81 provided on the tilt operation lever 50, the lock shaft 52 does not reach the innermost end of the first groove 53a regardless of the action of the compression spring 54. No (see FIG. 10A). That is, the first metal fitting 81 is brought into contact with the frame 221 provided in the backrest portion 22, so that the lock shaft 52 is prevented from reaching the innermost portion of the first groove portion 53a. It stays at a substantially middle position of the groove 53a. For this reason, the above-described stroke difference occurs.

  By the way, as shown in FIGS. 13 and 14, the tilt operation lever 50 is disposed on the lower side with a space from the first metal fitting 81, and cooperates with a frame 221 constituting the backrest portion 22. A second metal fitting 82 that restricts the amount of lifting of the lever is provided. The second metal fitting 82 does not come into contact with the frame 221 at the amount of movement (stroke) of the tilt operation lever 50 required when switching between the movement posture and the tilt posture.

  On the other hand, in the full reclining posture, the second metal fitting 82 and the frame 221 come into contact with each other, so that the lock shaft 52 (an example of the second lock shaft of the present invention) and the first groove portion 53a (second of the present invention). A stroke sufficient to release the engagement with one example of the engagement groove) cannot be obtained. That is, by the second safety mechanism including the second metal fitting 82 (an example of the second restricting portion of the present invention), the bathing wheelchair 1 performs an operation for switching from the full reclining posture to the tilting posture. I can't.

  Note that, by switching from the full reclining posture to the moving posture, the lock shaft 52 returns to a substantially intermediate position of the first groove portion 53a. For this reason, when returning to the moving posture, it is possible to switch to the tilt posture by operating the tilt operation lever 50.

<Others>
The embodiment described above is an exemplification of the present invention, and the scope of application of the present invention is not limited to the configuration of the embodiment described above.

  For example, the bathing apparatus 100 to which the bathing wheelchair of the present invention is applied is merely an example, and the configuration of the bathing apparatus to which the bathing wheelchair of the present invention is applied may be in another form.

  The present invention is widely applicable to bathing wheelchairs that can be switched to at least three postures, and the three postures may be other than the postures described above. The present invention can also be applied to an apparatus to which postures other than the three postures described above are added.

DESCRIPTION OF SYMBOLS 1 Bathing wheelchair 10 Bogie part 14 Caster 20 Chair part 21 Seat surface part 22 Backrest part 50 Tilt operation lever (1st operation lever)
52 Lock shaft (second lock shaft)
53a 1st groove part (2nd engagement groove)
60 Full reclining control lever (second control lever)
61 Lock shaft (first lock shaft)
62a Groove (first engagement groove)
72 baffle plate (first regulating part: part of first safety mechanism)
82 2nd metal fitting (2nd control part: a part of 2nd safety mechanism)

Claims (5)

A carriage section having casters;
A chair portion disposed on the carriage portion,
The chair portion is different from the first position to sit bather, a second position obtained by moving a bather sitting from the first posture in a direction tilted rearward, and the second position The mechanism is provided so as to be switchable to a third posture obtained by moving the bather sitting from the first posture backward in a direction to tilt backward ,
A bathing wheelchair characterized in that an operation for switching from the second posture to the third posture and an operation for switching from the third posture to the second posture are impossible. The chair portion is provided so that the entire chair portion is rotatable with respect to the cart portion,
The chair portion includes a seat surface portion and a backrest portion that is rotatably provided with respect to the seat surface portion.
The second posture is a posture in which the entire chair portion is rotated from the first posture,
2. The bathing wheelchair according to claim 1, wherein the third posture is a posture in which an inclination of the backrest portion with respect to the seat surface portion is changed from the first posture. A first operating lever used to switch to the second posture;
A second operating lever used to switch to the third posture;
A first safety mechanism that disables a switching operation by the second operating lever when the second posture is set;
The bathing wheelchair according to claim 1, further comprising a second safety mechanism that disables the switching operation by the first operation lever when the posture is the third posture. When the first safety mechanism is in the second posture, the first lock shaft that moves in conjunction with the second operation lever, and the first engagement that engages with the first lock shaft. Including a first restricting portion that disables the engagement with the groove,
When the second safety mechanism is in the third posture, the second lock shaft that moves in conjunction with the first operation lever, and the second engagement that engages with the second lock shaft. The bathing wheelchair according to claim 3, further comprising a second restricting portion that disables the engagement with the joint groove. The first posture is a posture used when transferring a bather,
The second posture is a posture used during bathing,
The bathing wheelchair according to any one of claims 1 to 4, wherein the third posture is a posture used in a washing operation.

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