JP2010273783A - Bathing care device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathing care device used for bathing a care receiver seated on a chair member by putting the care receiver into a bathtub and taking the care receiver out of the bathtub together with the chair member. <P>SOLUTION: The bathing care device 10 includes: the chair member 11 including a seat surface 11a and a backrest 11b; a vertically telescopic fluid pressure actuator 12; a base 13 to which the lower end of the fluid pressure actuator 12 is attached and fixed; pulleys 14a, 14b, 15a, and 15b attached to the upper end of the fluid pressure actuator 12; wires 16a and 16b laid over the pulleys 14a, 14b, 15a, and 15b; and lifting support members 17a, 17b, 18a, and 18b for supporting the chair member 11 in lifting along the telescoping direction of the fluid pressure actuator 12. The first ends of the wires 16a and 16b are attached and fixed to the base 13, while the second ends of the wires 16a and 16b are attached and fixed to the chair member 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bathing apparatus, and more particularly, to a bathing care apparatus used for taking a person requiring care (user, care recipient) into and out of a bathtub together with the chair member while sitting on the chair member. Is.

In Patent Literature 1, a telescopic cylinder that is detachably installed on the inner bottom of a bathtub, a horizontal arm that is attached so as to extend laterally from the telescopic cylinder, A telescope type telescopic device with a chair provided with a chair member provided so as to be rotatable in the same plane is disclosed.
Further, in Patent Document 1, the horizontal arm portion is attachable to and detachable from the telescopic cylinder by engaging and disengaging a hook portion formed at a tip portion with a pin of the telescopic cylinder. Is disclosed.
Further, in Patent Document 1, a slider plate is provided between the chair member and the horizontal arm portion so that the chair member can slide with respect to the horizontal arm portion. It is disclosed that it is rotatably attached to the slider plate by a support pin.

Patent Document 2 discloses a pedestal attached to an end of a telescopic cylinder, an outer sleeve fixed to the pedestal so as to surround the telescopic cylinder, and left and right front and rear sides of the outer sleeve. A wide slider that is attached and expanded and contracted in the axial direction, a mounting portion that is attached to the tip of the slider and that faces the head of the telescopic cylinder, and one end that is separated from the mounting portion A telescope-type telescopic device is disclosed that includes a hook member that is attached in a holding state and is provided so that the other end bears a load portion.
Patent Document 2 discloses that the eaves member is provided so as to be rotatable about the attachment portion, and the load portion is a user who rides on a chair provided in the eaves member. ing.

In Patent Document 3, an elevating lift cylinder standing on one end of a bathing apparatus main body, an arm rotatably connected to an upper end of the elevating cylinder, and a tip of the arm are provided. A bathing device with a chair is disclosed.
Further, Patent Document 3 discloses that a drive device is provided that sends hydraulic pressure to the lifting cylinder for driving.

  Patent Document 4 discloses a bathing lifter provided with a cylinder device protruding from a bathroom, an arm mechanism supported by the cylinder device and moved up and down, and a chair suspended at the tip of the arm mechanism. Yes.

Patent Document 5 discloses a water pressure raising / lowering bathing apparatus in which a chair is mounted on the upper end side of a cylinder rod of a hydraulic cylinder.
Further, Patent Document 5 discloses that the cylinder rod of the hydraulic cylinder is raised only by the tap water pressure.

Patent Document 6 discloses a bathing care lifting device including a piston / cylinder device, a stay connected to a piston rod of the piston / cylinder device, and a seat for seating supported by the stay. .
Patent Document 6 discloses that the piston rod of the piston / cylinder device is raised only by the water pressure of tap water.

Patent Document 7 discloses a telescope-type actuator including a telescope-type cylinder, an elastomeric bellows coaxially inserted inside the telescope-type cylinder, and a cloth cylinder covering the outer periphery of the bellows. Has been.
Patent Document 7 discloses that the elastomeric bellows of the telescopic cylinder is extended only by the water pressure of tap water.

JP 2006-326227 A (pages 2-7, FIGS. 3-6) JP 2006-158680 A (pages 2 to 6, FIGS. 5 and 6) Japanese Patent Laid-Open No. 10-230006 (pages 2 to 4, FIGS. 1 to 3) JP 2000-229114 A (pages 2 to 4, FIG. 1) JP 2001-104435 A (pages 2 to 4, FIGS. 1 to 3) Japanese Patent Laying-Open No. 2005-288106 (pages 2-7, FIG. 1) Japanese Patent Laying-Open No. 2005-69251 (pages 2 to 4, FIG. 1)

The technique of Patent Document 1 has the following problems.
[Problem 1a] Since the distal end portion (hook portion) of the horizontal arm portion is directly attached to the telescope type cylinder, the vertical movement distance of the chair member is the stroke amount (expansion / contraction of the telescope type cylinder). The amount of stroke of the telescopic cylinder must be increased in order to obtain a sufficient vertical movement distance of the chair member, and the telescopic cylinder becomes longer and the manufacturing cost increases. Furthermore, the telescopic cylinder upright is easy to fall down and is dangerous.

  [Problem 1b] Since the horizontal arm is attached to the telescope cylinder in a cantilevered state, the load applied to the horizontal arm (the weight of the chair member and the weight of the care recipient who sits on the chair) In order to stably and reliably support the weight), the strength of the lateral arm portion and the telescopic cylinder must be increased, and the manufacturing cost increases.

  [Problem 1c] Since the chair member is rotatably attached to the slider plate, and the slider plate is slidably attached to the lateral arm portion, a care recipient who sits on the chair member may In order to stably and reliably support the weight, the strength of the slider plate and the lateral arm portion must be increased, resulting in an increase in manufacturing cost.

  [Problem 1d] Since the telescope-type cylinder is installed at the inner bottom of the bathtub, the telescope-type cylinder is soaked in the hot water in the bathtub. In addition to being unsanitary and easy for bacteria to grow from the scale attached to the telescope type cylinder, the inside of the bathtub is narrowed by the installation space of the telescope type cylinder, so it is difficult for caregivers with large physiques to take a bath.

The technique of Patent Document 2 has the following problems.
[Problem 2a] Since the eaves member is directly attached to the telescope cylinder from the attachment portion via the slider, the vertical movement distance of the chair is the same as the stroke amount of the telescope cylinder. There is the same problem as the problem 1a.

  [Problem 2b] Since the eaves member is attached to the telescopic cylinder from the attachment portion via the slider in a cantilever state, in order to stably and reliably support the load applied to the eaves member, Since the strength of each member (the saddle member, the mounting portion, the slider, and the telescopic cylinder) has to be increased and the manufacturing cost increases, there is the same problem as the problem 1b.

The technique of Patent Document 3 has the following problems.
[Problem 3a] Since the arm is directly attached to the lift cylinder, the vertical movement distance of the chair is the same as the stroke amount of the lift cylinder, and there is the same problem as the problem 1a.

  [Problem 3b] Since the arm is attached to the upper end of the elevating cylinder in a cantilevered state, the arm and the elevating cylinder are strengthened in order to stably and reliably support the load applied to the arm. Since the manufacturing cost must be increased, there is the same problem as the problem 1b.

  [Problem 3c] The driving device for sending hydraulic pressure to the elevating cylinder for driving is required.

The technique of Patent Document 4 has the following problems.
[Problem 4a] Since the arm mechanism is directly attached to the cylinder device, the vertical movement distance of the chair is the same as the stroke amount of the cylinder device, and there is the same problem as the problem 1a.

  [Problem 4b] Since the arm mechanism is attached to the cylinder device in a cantilever state, in order to stably and reliably support the load applied to the arm mechanism, the strength of the arm mechanism and the cylinder device is increased. Since the manufacturing cost must be increased, there is the same problem as the problem 1b.

The technique of Patent Document 5 has the following problems.
[Problem 5a] Since the chair is directly attached to the upper end of the cylinder rod of the hydraulic cylinder, the vertical movement distance of the chair is the same as the stroke amount of the hydraulic cylinder, and the same problem as the problem 1a. There is.

  [Problem 5b] Since the chair is attached to the upper end of the cylinder rod of the hydraulic cylinder in a cantilevered state, the chair and the chair can be used in order to stably and surely support the weight of a care recipient on the chair. Since the strength of the hydraulic cylinder has to be increased and the manufacturing cost increases, there is the same problem as the problem 1b.

  [Problem 5c] Since the cylinder rod of the hydraulic cylinder is kept in an elevated state only by the tap water pressure, if tap water flows out of the hydraulic cylinder for some reason or the tap water pressure decreases, The cylinder rod descends. In addition, since the cylinder rod is kept in an elevated state only by the tap water pressure, the chair attached to the cylinder rod may move up and down and shake or sink.

The technique of Patent Document 6 has the following problems.
[Problem 6a] Since the stay is directly attached to the piston rod of the piston / cylinder device, the vertical movement distance of the seat for seating is the same as the stroke amount of the piston / cylinder device. Have the same problem.

  [Problem 6b] Since the stay is attached to the piston rod of the piston / cylinder device in a cantilever state, the stay and the piston / cylinder device can be used to stably and reliably support the load applied to the stay. Since the manufacturing cost increases because the strength of the steel must be increased, there is the same problem as the problem 1b.

  [Problem 6c] Since the piston rod of the piston / cylinder device is raised only by the tap water pressure, there is the same problem as the problem 5c.

The technique of Patent Document 7 has the following problems.
[Problem 7a] Since the elastomeric bellows and the cloth cylinder are used, the elastomeric bellows and the cloth cylinder are easily damaged and broken, and the elastomeric bellows and the cloth cylinder are likely to deteriorate over time. Regular replacement is necessary and the operation cost is high.

  [Problem 7b] Since the elastomer bellows is stretched only by the tap water pressure, it has the same problem as the problem 5c.

  The present invention has been made in order to solve the above-described problems, and its purpose is to provide a bathing care used for bathing a person in need of care with the chair member in and out of the bathtub together with the chair member. An object of the present invention is to provide a bathing care apparatus that is highly safe, low in manufacturing cost, hard to break down, hygienic and does not narrow the inside of a bathtub.

The invention described in claim 1
A chair member (11) having a seat surface (11a) and a dorsal fin (11b);
A telescopic device (12) that expands and contracts in the vertical direction;
A base (13) to which the lower end of the telescopic device (12) is attached and fixed;
Pulleys (14a, 14b, 15a, 15b) attached to the upper end of the telescopic device (12);
Wires (16a, 16b) hung on the pulleys (14a, 14b, 15a, 15b) and first ends of the wires (16a, 16b) are fixedly attached to the base (13), and the wires ( The second end of 16a, 16b) is fixedly attached to the chair member (11);
A bathing care apparatus (10, 30) provided with an elevating support member (17a, 17b, 18a, 18b) for supporting the chair member (11) ascending and descending along the expansion / contraction direction of the expansion / contraction apparatus (12). Technical features.

The invention described in claim 2
In the bathing care apparatus (10, 30) according to claim 1,
A base (19, 31) on which the base (13) is placed;
A rotating shaft (19b) that pivotally supports the base (13) and the pedestal (19, 31) directly under the telescopic device (12);
A fixing mechanism (19g) for fixing and holding the base (13) with respect to the base (19, 31);
The base (13) is technically characterized in that the base (13) is rotatably attached to the base (19, 31) by the rotation shaft (19b).

The invention according to claim 3
In the bathing care apparatus (10, 30) according to claim 2,
A leg member (20) on which the pedestal (19, 31) is placed;
The leg member (20) is technically characterized in that its height can be varied according to the bathtub (BTa, BTb).

The invention according to claim 4
In the bathing care apparatus (10, 30) according to claim 2 or claim 3,
A technical feature is that a fixing member (21) for fixing the pedestal (19, 31) to the bathtub (BTa, BTb) is provided.

The invention described in claim 5
In the bathing care apparatus (10, 30) according to any one of claims 1 to 4,
A footrest (24) slidably attached to the seat surface (11a) of the chair member (11);
A technical feature is that the feet of the care recipient seated on the chair member (11) are placed on the footrest (24) slid from the seat surface (11a) of the chair member (11).

The invention described in claim 6
In the bathing care apparatus (10, 30) according to any one of claims 1 to 5,
A technical feature is that the armrest (22) is rotatably attached to the backrest (11b) of the chair member (11).

The invention described in claim 7
In the bathing care apparatus (10, 30) according to any one of claims 1 to 6,
The lifting support member is
Slider plates (17a, 17b) fixedly attached to the chair member (11);
Slide guides (18a, 18b) that are attached and fixed to the base (13) and extend in the expansion / contraction direction of the expansion / contraction device (12),
The slider plate (17a, 17b) is technically characterized by being slidably supported with respect to the slide guide (18a, 18b).

The invention according to claim 8 provides:
In the bathing care apparatus (10, 30) according to any one of claims 1 to 7,
The pulleys (14a, 14b, 15a, 15b) are composed of a first pulley (14a, 15a) and a second pulley (14b, 15b),
The wire (16a, 16b) is technically characterized in that it is stretched over the first pulley (14a, 15a) and the second pulley (14b, 15b).

The invention according to claim 9 is:
In the bathing care apparatus (10, 30) according to any one of claims 1 to 8,
A technical feature is that a plurality of sets of the pulleys (14a, 14b, 15a, 15b) and the wires (16a, 16b) are provided.

The invention according to claim 10 is:
In the bathing care apparatus (10, 30) according to any one of claims 1 to 9,
The second end of the wires (16a, 16b) is technically characterized in that it is attached and fixed to the lower side of the seat surface (11a) of the chair member (11).

The invention according to claim 11
In the bathing care apparatus (10, 30) according to any one of claims 1 to 10,
The base (13) is technically characterized by being installed outside the bathtub (BTa, BTb).

The invention according to claim 12
In the bathing care apparatus (10) according to any one of claims 1 to 11,
The telescopic device (12) is technically characterized in that it is disposed on the back side of the back (11b) of the chair member (11).

The invention according to claim 13
In the bathing care apparatus (30) according to any one of claims 1 to 11,
The telescopic device (12) is technically characterized in that it is disposed on the side surface side of the back (11b) of the chair member (11).

The invention according to claim 14
In the bathing care apparatus (10, 30) according to any one of claims 1 to 13,
The telescopic device (12)
A cylinder (12a);
A locking hole (40a) formed through the peripheral wall of the cylinder (12a);
The three-way valve (45) connected to the cylinder (12a), the three-way valve (45), and a water injection side for flowing tap water into the cylinder (12a), and tap water in the cylinder (12a) Switching to a drain side to be discharged and a water stop side to stop the flow of tap water into the cylinder (12a);
A piston (12b) inserted through the cylinder (12a);
A fluid pressure actuator comprising a pressing member (41) inserted between an inner bottom surface of the cylinder (12a) and the piston (12b),
The piston (12b)
A stopper (44) that protrudes when tap water pressure is applied;
The tap water pressure is applied to the stopper (44) when pressed by the pressing member (41), and the tap water pressure is not applied to the stopper (44) when not pressed by the pressing member (41). The water pressure applying member (42, 47) to be attached is attached,
To extend the piston (12b)
First, the three-way valve (45) is switched to the water injection side, and the water pressure of tap water that has flowed into the cylinder (12a) is applied to the piston (12b), and the water pressure of tap water is also applied to the pressing member (41). The pressure member (41) is moved toward the water pressure application member (42, 47) to press the water pressure application member (42, 47), and the stopper (44) is moved to the locking hole ( When the position coincides with the position of 40a), the water pressure applying member (42, 47) applies tap water pressure to the stopper (44), the stopper (44) protrudes, and the locking hole ( 40a) is fitted and locked to fix the piston (12b) to the cylinder (12a),
Thereafter, the three-way valve (45) is switched to the water stop side so that the water pressure of tap water is not applied to the pressing member (41), and the water pressure applying member (42, 47) of the pressing member (41) By releasing the pressure, the application of tap water pressure to the stopper (44) by the water pressure application member (42, 47) is released,
To retract the piston (12b)
First, the stopper (44) and the locking hole are formed by switching the three-way valve (45) to the water injection side and applying the water pressure of tap water flowing into the cylinder (12a) to the piston (12b). (40a) is released,
After that, the three-way valve (45) is switched to the drainage side to prevent the tap water from being applied to the piston (12b).

The invention according to claim 15 is:
In the bathing care apparatus (10, 30) according to claim 14,
When the three-way valve (45) is switched to the water injection side to extend the piston (12b) and the stopper (44) is engaged with and locked with the locking hole (40a), the locking A technical feature is that a first flowing water path (43a, 42a, Sd, 42c) for flowing tap water out of the hole (40a) is provided.

The invention described in claim 16
In the bathing care apparatus (10, 30) according to claim 14 or 15,
In order to retract the piston (12b), the three-way valve (45) is switched to the water injection side, and when the engagement between the stopper (44) and the locking hole (40a) is released, the locking hole ( The technical feature is that a second flowing water path (43a, 42d) for draining tap water from 40a) is provided.

The invention described in claim 17
In the bathing care apparatus (10, 30) according to any one of claims 14 to 16,
The inside of the piston (12b) is a cavity,
A relief valve (46) connected to a cavity in the piston (12b);
A water injection hole (40h) that is formed through the piston (12b) at a location where tap water pressure is applied and communicates with a cavity in the piston;
When an excessive load equal to or greater than a set load is applied to the piston (12b) and the air pressure in the piston (12b) becomes higher than the set pressure of the relief valve (46), the relief valve (46) is opened, The air in the piston (12b) is discharged to the outside through the relief valve (46),
When the air pressure in the piston (12b) decreases, tap water of an amount corresponding to the decrease in the air pressure enters the piston (12b) through the water injection hole (40h),
When the air pressure in the piston (12b) falls below the set pressure of the relief valve (46), the relief valve (46) is closed, leaving the tap water that has entered the piston (12b) by that time, It is technically characterized that the tap water having the above amount of water is stopped from entering the piston (12b) from the water injection hole (40h).

<Explanation of terms>
Reference numerals and the like in parentheses described in [Means for Solving the Problems] described above correspond to reference numerals and the like of constituent members described in [Mode for Carrying Out the Invention] described later.
The correspondence between the constituent members described in [Means for Solving the Problems] and the constituent members described in [Mode for Carrying Out the Invention] is as follows.

The “extension device” corresponds to the fluid pressure actuator 12.
The “elevating support member” corresponds to the slider plates 17a and 17b and the slide guides 18a and 18b.
The “first pulley” corresponds to the pulleys 14a and 15a, and the “second pulley” corresponds to the pulleys 14b and 15b.
The “locking hole” corresponds to each through hole 40a of the cylinder 12a.
The “pressing member” corresponds to the disk member 41.
The “water pressure applying member” corresponds to the stopper member 47 and the stopper guide 42.
The “first flowing water path” includes a through hole 43a of the seal member 43, a through hole 42a of the stopper guide 42, a space Sd, and a gap between each groove 42c of the stopper guide 42 and each stopper 44 (both sides in the longitudinal direction of each groove 42c). ).
The “second flowing water path” is configured by the through holes 43 a of the seal member 43 and the grooves 42 d of the stopper guide 42.
The “water injection hole” corresponds to each through hole 40h of the workpiece IB.

  According to claim 1, the same operation and effect as described in [1] and [2] of [Operation and effect of first embodiment] described later can be obtained.

  According to claim 2, the same operation and effect as described in [3] of [Operation and effect of first embodiment] can be obtained.

  According to the third aspect, the same operation and effect as described in [4] of [Operation and effect of the first embodiment] can be obtained.

  According to the fourth aspect, the same operation and effect as described in [5] of [Operation and effect of the first embodiment] can be obtained.

  According to the fifth aspect, the same operation / effect as described in [Operation / Effect of Third Embodiment] described later can be obtained.

  According to claim 6, the same operation and effect as described in [6] of [Operation and effect of first embodiment] can be obtained.

  According to claim 7, the same operation and effect as described in [7] of [Operation and effect of first embodiment] can be obtained.

  According to the eighth aspect, the same operation and effect as described in [8] of [Operation and effect of the first embodiment] can be obtained.

  According to the ninth aspect, the same operation and effect as described in [9] of [Operation and effect of the first embodiment] can be obtained.

  According to the tenth aspect, the same operation and effect as described in [10] of [Operation and effect of the first embodiment] can be obtained.

  According to the eleventh aspect, the same operation and effect as described in [11] of [Operation and effect of the first embodiment] can be obtained.

  According to the twelfth aspect, the same operation and effect as described in [12] of [Operation and effect of the first embodiment] can be obtained.

  According to the thirteenth aspect, the same operation / effect as described in [Operation / Effect of Second Embodiment] described later can be obtained.

  According to the fourteenth aspect, the same operation and effect as described in [1] to [4] of [Operation and effect of the fourth embodiment] described later can be obtained.

  According to the fifteenth aspect, the same operation and effect as described in [5] of [Operation and effect of the fourth embodiment] can be obtained.

  According to the sixteenth aspect, the same operation and effect as described in [6] of [Operation and effect of the fourth embodiment] can be obtained.

  According to the seventeenth aspect, the same operation and effect as described in [7] of [Operation and effect of the fourth embodiment] can be obtained.

The principal part cross-sectional front view of the bathing care apparatus of the first embodiment 10 embodying the present invention (a state in which the chair member 11 is raised). The principal part cross-section right view of the bathing care apparatus 10 of 1st Embodiment (state which the chair member 11 rose). The principal part sectional front view of bathing care device 10 of a 1st embodiment (state where chair member 11 descended). The principal part cross-sectional right side view of the bathing care apparatus 10 of the first embodiment (a state in which the chair member 11 is lowered). The principal part top view of the bathing care apparatus 10 of 1st Embodiment. The principal part top view of the bathing care apparatus 10 of 1st Embodiment. The front view of the bathing care apparatus 30 of 2nd Embodiment which actualized this invention (The state which the chair member 11 rose). The principal part cross-sectional right side view of the bathing care apparatus 30 of the second embodiment (a state in which the chair member 11 is raised). A front view of bathing care device 30 of a 2nd embodiment (state where chair member 11 descended). The principal part cross-sectional right side view of the bathing care apparatus 30 of the second embodiment (a state in which the chair member 11 is lowered). The principal part top view of the bathing care apparatus 30 of 2nd Embodiment. The principal part top view of the bathing care apparatus 30 of 2nd Embodiment. Explanatory drawing for demonstrating the footrest 24 of 3rd Embodiment used with the bathing care apparatus 10 and 30 of 1st Embodiment or 2nd Embodiment. FIG. 14A is a longitudinal cross-sectional view of a cylinder 12a of a fluid pressure actuator (extension device) 12 of a fourth embodiment used in the bathing care devices 10 and 30 of the first embodiment or the second embodiment. FIG. 14B is a left side view of the cylinder 12a. The longitudinal cross-sectional view of piston 12b of the fluid pressure actuator 12. FIG. FIG. 16A is a top view of the piston 12 b of the fluid pressure actuator 12. FIG. 16B is a bottom view of the piston 12b. FIG. 17A is a top view of the disk member 41 of the fluid pressure actuator 12. FIG. 17B is a longitudinal sectional view of the disk member 41. FIG. 17C is a bottom view of the disk member 41. FIG. 18A is a top view of the stopper guide 42 of the fluid pressure actuator 12. FIG. 18B is a front view of the stopper guide 42. FIG. 18C is a bottom view of the stopper guide 42. FIG. 19A is a top view of the seal member 43 of the fluid pressure actuator 12. FIG. 19B is a longitudinal sectional view of the seal member 43. FIG. 20A is a left side view of the stopper 44 of the fluid pressure actuator 12. FIG. 20B is a top view of the stopper 44. FIG. 20C is a front view of the stopper 44. FIG. 20D is a bottom view of the stopper 44. FIG. 20E is a right side view of the stopper 44. Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). The principal part enlarged view of FIG. The principal part enlarged view of FIG. The principal part enlarged view of FIG. The principal part enlarged view of FIG. The principal part enlarged view of FIG. The principal part enlarged view of FIG. Explanatory drawing for demonstrating operation | movement of the fluid pressure actuator 12 (schematic principal part longitudinal cross-sectional view of the fluid pressure actuator 12). The principal part enlarged view of FIG.

  Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In each embodiment, the same constituent members are denoted by the same reference numerals, and duplicated descriptions are omitted for portions having the same contents.

<First Embodiment>
FIG. 1 is a cross-sectional front view of an essential part of the bathing care apparatus 10 of the first embodiment (a state in which the chair member 11 is raised).
FIG. 2 is a cross-sectional right side view of a main part of the bathing care apparatus 10 (a state in which the chair member 11 is raised).
FIG. 3 is a cross-sectional front view of an essential part of the bathing care apparatus 10 (a state in which the chair member 11 is lowered).
FIG. 4 is a cross-sectional right side view of the main part of the bathing care apparatus 10 (a state in which the chair member 11 is lowered).
FIG. 5 is a top view of an essential part of the bathing care apparatus 10.
FIG. 6 is a top view of an essential part of the bathing care apparatus 10.

The bathing care device 10 includes a chair member 11 (a seat surface 11a, a backrest 11b, a frame 11c), a fluid pressure actuator 12 (an expansion / contraction device: a cylinder 12a, a piston 12b), a base 13, pulleys 14a, 14b, 15a, 15b, The wires 16a and 16b, slider plates 17a and 17b, slide guides 18a and 18b, a pedestal 19, a rotating shaft 19b, a fixing mechanism 19g, a leg member 20, a fixing member 21, an armrest 22, a protective cover 23, and the like.
The bathing care apparatus 10 is set in a substantially box-shaped Western-style bathtub (Western-style bathtub) BTa installed on the floor BF of the bathroom.

The chair member 11 includes a seat surface 11a, a backrest 11b, a frame 11c, and the like.
The substantially flat seat surface 11a and the backrest 11b are integrally formed of a synthetic resin material.
The frame 11 c is composed of two L-shaped metal plates arranged at intervals, and a substantially horizontal portion of each metal plate is attached and fixed to the seat surface 11 a of the chair member 11.

The fluid pressure actuator 12 includes a cylindrical cylinder 12a and a piston (cylinder rod) 12b.
The base 13 is made of a metal plate, and the lower end portion of the cylinder 12 a is attached and fixed to the base 13.
The base 13 is installed outside the short side of the Western-style bathtub BTa.
The fluid pressure actuator 12 is disposed on the back side of the back 11 b of the chair member 11.

Each pulley 14a, 14b, 15a, 15b is attached to a flat upper end of a piston 12b protruding from above the cylinder 12a.
The wire 16a is stretched over the pulleys 14a and 14b, the first end (one end) of the wire 16a is attached and fixed to the upper surface of the base 13, and the second end (other end) of the wire 16a is a chair member. 11 is attached and fixed to an L-shaped bent portion of a metal plate constituting the frame 11c.
The wire 16b is stretched over the pulleys 15a and 15b, the first end of the wire 16b is attached and fixed to the upper surface of the base 13, and the second end of the wire 16b is a metal plate constituting the frame 11c of the chair member 11. It is fixedly attached to the bent part of the L-shape.
That is, the second ends of the wires 16 a and 16 b are fixedly attached to the lower side of the seat surface 11 a of the chair member 11.

  The pulleys 14a and 14b, the pulleys 15a and 15b, and the wires 16a and 16b are arranged in parallel. The fixed pulley mechanism including the pulleys 14a and 14b and the wires 16a, and the pulleys 15a and 15b and the wires 16b. The fixed pulley mechanism has the same structure and the same dimensions.

Each of the slider plates 17a and 17b is composed of an L-shaped substantially vertical portion of each metal plate constituting the frame 11c of the chair member 11. That is, the slider plates 17 a and 17 b are fixedly attached to the chair member 11.
Each of the slide guides 18a and 18b is made of a long metal material having a U-shaped cross section and is arranged in parallel.
The lower end portions (fixed end portions) of the slide guides 18a and 18b are attached and fixed to the upper surface of the base 13, and the upper end portions (free end portions) of the slide guides 18a and 18b are expanded and contracted in the piston 12b of the fluid pressure actuator 12. It is extended to.

The slider plates 17a and 17b are respectively fitted to the slide guides 18a and 18b and supported so as to be slidable.
A plurality of bearings (not shown) are provided between the slider plates 17a and 17b and the slide guides 18a and 18b, and the slider plates 17a and 17b are connected to the slide guides 18a and 18b via the bearings. On the other hand, it can slide smoothly without rattling.
Therefore, the raising / lowering support member comprised from each slider board 17a, 17b and each slide guide 18a, 18b supports that the chair member 11 raises / lowers along the expansion-contraction direction of piston 12b of the fluid pressure actuator 12. FIG.

The pedestal 19 includes a flat plate 19a, a rotating shaft 19b, frames 19c and 19d, a fixing screw 19e, an attachment member 19f, a fixing mechanism 19g, and the like.
The base 13 is placed on the flat plate 19 a of the pedestal 19.
The rotation shaft 19 b pivotally supports the base 13 and the flat plate 19 a of the pedestal 19 immediately below the fluid pressure actuator 12. That is, the rotation shaft 19 b is disposed on the extension of the central axis of the fluid pressure actuator 12.
The base 13 is attached to the pedestal 19 so as to be rotatable by a rotation shaft 19b.

The fixing mechanism 19g fixes and holds (locks) the base 13 with respect to the base 19.
The fixing mechanism 19g may have any structure as long as the base 13 can be securely fixed and held. For example, the fixing mechanism 19g includes a through hole provided in both the base 13 and the pedestal 19 and the transparent hole. A structure including a fixing pin inserted through the hole is conceivable.

Each of the frames 19c and 19d is made of a metal long cylindrical material having a rectangular cross section, and is arranged on two long side edges of the western-style bathtub BTa so as to be arranged in parallel.
Each of the frames 19c and 19d is composed of three cylindrical members, and the three cylindrical members are telescopically inserted into the three cylindrical members, and the three cylindrical members are fixed using a fixing screw 19e. A flat plate 19a of a pedestal 19 is attached and fixed to the upper surface of the cylindrical member, an attachment member 19f is attached and fixed to an end portion of one cylindrical member, and a leg member 20 is attached to an end portion of the other cylindrical member. Is attached and fixed, the length of each frame 19c, 19d can be optimally adjusted according to the length of the short side of the Western-style bathtub BTa.
The attachment member 19f is made of a long metal member having a rectangular cross section, and is placed on the long side edge of the Western-style bathtub BTa.

The pedestal 19 is placed and fixed on the leg member 20.
The leg member 20 includes frames 20a to 20c and a fixing screw 20d.
Each of the frames 20a to 20c is made of a metal long cylindrical material having a rectangular cross section.
Each of the frames 20a and 20b is composed of two tubular members, and the two tubular members are telescopically inserted into the two tubular members, and the two tubular members are fixed by using a fixing screw 20d. The frames 19c and 19d of the pedestal 19 are attached and fixed to the end of the cylindrical member, and the frame 20c is attached and fixed to the end of the lower cylindrical member.
The frame 20c is placed on the bathroom floor BF.
Therefore, by adjusting the expansion and contraction of each frame 20a, 20b and fixing with the fixing screw 20d, the height of the leg member 20 can be varied in accordance with the Western-style bathtub BTa.

The fixing member 21 is made of a substantially rectangular metal plate, and is fixedly attached to the frame 19 d of the pedestal 19.
And the base 19 is fixed with respect to the western-style bathtub BTa by making the fixing member 21 contact | abut inside the long side edge of Western-style bathtub BTa.

The armrest 22 is pivotally attached to the backrest 11b of the chair member 11 using a hinge 22a (see FIG. 5).
A fixing mechanism 22b for fixing and holding the armrest 22 in a state in which the armrest 22 is rotated to a position away from the seat surface 11a of the chair member 11 and fixing the armrest 22 in a normal use state (lock) is provided on the hinge 22a. Is provided.

The protective cover 23 has a substantially cylindrical shape with the upper end closed. The protective cover 23 is divided into an upper part (not shown) and a lower part (not shown), and the lower end of the lower part is attached and fixed to the base 13. The upper part is attached and fixed to a roller stay (not shown) at the upper end of the piston 12b, and the upper part and the lower part are telescopically fitted and telescopic.
Therefore, as the piston 12b retracts / extends, the upper part slides relative to the lower part of the protective cover 23, and the protective cover 23 is also retracted / expanded.

  The protective cover 23 is covered with movable parts of the bathing care apparatus 10 (fluid pressure actuator 12, pulleys 14a, 14b, 15a, 15b, wires 16a, 16b, slide guides 18a, 18b).

[Operation Method of First Embodiment]
The bathing care apparatus 10 of the first embodiment is operated according to the following procedure.

<Procedure 1>
As shown in FIGS. 1 and 2, the piston 12b of the fluid pressure actuator 12 is extended (raised) upward from the cylinder 12a, and the chair member 11 is lifted and pulled up above the Western-style bathtub BTa.

<Procedure 2>
As shown in FIG. 5, the base 13 is rotated with respect to the pedestal 19 so that the front side of the seating surface 11a of the chair member 11 faces the outside of the long side of the Western-style bathtub BTa, and the base 13 is used by using the fixing mechanism 19g. The base 13 is fixedly held on the base 19.
Next, the armrest 22 is rotated with respect to the back 11b of the chair member 11 so that the armrest 22 is located at a position P away from the seating surface 11a of the chair member 11, and the armrest 22 is attached to the armrest 22 using the fixing mechanism 22b. Fix and hold at position P.

<Procedure 3>
After the care recipient (user, care recipient) is seated on the chair member 11, as shown in FIG. 5, the armrest 22 is rotated with respect to the backrest 11b of the chair member 11, and the fixing mechanism 22b is used. The armrest 22 is fixed and held at the position Q in the normal use state.
Next, the fixed holding of the base 13 by the fixing mechanism 19g is released.
Subsequently, as shown in FIG. 6, the base 13 is rotated with respect to the pedestal 19 so that the front side of the seating surface 11a of the chair member 11 faces the inner side of the western-style bathtub BTa, and the base 13 is used by using the fixing mechanism 19g. The base 13 is fixedly held on the base 19.

<Procedure 4>
As shown in FIGS. 3 and 4, the piston 12b of the fluid pressure actuator 12 is retracted (lowered) downward into the cylinder 12a, and the chair member 11 is lowered and pulled down into the western-style bathtub BTa. A care recipient sitting on the member 11 is bathed in the hot water stretched in the Western-style bathtub BTa.

<Procedure 5>
When bathing of the care recipient is completed, as shown in FIGS. 1 and 2, the piston 12b of the fluid pressure actuator 12 is extended upward from the cylinder 12a, and the chair member 11 is raised and pulled up above the Western-style bathtub BTa.

<Procedure 6>
The fixed holding of the base 13 by the fixing mechanism 19g is released.
Next, as shown in FIG. 5, the base 13 is rotated with respect to the base 19 so that the front side of the seat surface 11a of the chair member 11 faces the outside of the long side of the Western-style bathtub BTa, and the fixing mechanism 19g is moved. The base 13 is fixedly held on the pedestal 19 by using.
Subsequently, the fixing and holding of the armrest 22 by the fixing mechanism 22b is released, and the armrest 22 is rotated with respect to the back 11b of the chair member 11 so that the armrest 22 is at a position P away from the seat surface 11a of the chair member 11. Move.
Then, the care recipient is lowered from the chair member 11 and the bathing care is terminated.

[Operations and effects of the first embodiment]
According to the bathing care apparatus 10 of the first embodiment, the following actions and effects can be obtained.

[1] The lower end portion of the cylinder 12a of the fluid pressure actuator 12 is attached and fixed to the base 13, and pulleys 14a, 14b, 15a and 15b are attached to the upper end portion of the piston 12b of the fluid pressure actuator 12.
The pulleys 14 a and 14 b are each provided with a wire 16 a, the first end of the wire 16 a is attached and fixed to the base 13, and the second end of the wire 16 a is attached and fixed to the chair member 11.
Further, a wire 16b is stretched over each pulley 15a, 15b, a first end portion of the wire 16b is attached and fixed to the base 13, and a second end portion of the wire 16b is attached and fixed to the chair member 11.

Therefore, when the piston 12b extends upward, the wires 16a and 16b hung on the pulleys 14a, 14b, 15a and 15b are pushed up, and the chair member 11 attached and fixed to the wires 16a and 16b is pulled up. .
When the piston 12b is retracted downward, the wires 16a and 16b hung on the pulleys 14a, 14b, 15a and 15b are pulled down, and the chair member 11 attached and fixed to the wires 16a and 16b is also pulled down. .

At this time, since the vertical movement distance of the chair member 11 is twice the stroke amount (expansion / contraction amount) of the piston 12b, the vertical movement distance of the chair member 11 can be sufficiently obtained without increasing the stroke amount of the piston 12b. it can.
That is, compared with the techniques of Patent Documents 1 to 6, in the first embodiment, the stroke amount of the piston 12b can be halved.

Accordingly, it is possible to reduce the size of the fluid pressure actuator 12 and to reduce the manufacturing cost of the fluid pressure actuator 12 and also to reduce the height of the fluid pressure actuator 12, the upright fluid pressure actuator 12 falls down. This makes it difficult to improve safety.
Therefore, according to the first embodiment, the problems 1a, 2a, 3a, 4a, 5a, and 6a can be solved.

[2] The elevating support member constituted by the slider plates 17a and 17b and the slide guides 18a and 18b supports the chair member 11 ascending and descending along the expansion / contraction direction of the piston 12b of the fluid pressure actuator 12.
Further, as described above, the chair member 11 is moved up and down using the pulleys 14a, 14b, 15a, 15b and the wires 16a, 16b.

  That is, in the first embodiment, the lifting support members (slider plates 17a and 17b, slide guides 18a and 18b) and the pulleys 14a and 14b are used without using the cantilevered structure as in the techniques of Patent Documents 1 to 6. , 15a and 15b and the wires 16a and 16b, the load (weight of the care recipient) applied to the chair member 11 can be stably and reliably supported in a balanced manner.

Accordingly, in the first embodiment, each member (elevating support member, pulleys 14a, 14b, 15a, 15b, wires 16a, 16b, fluid pressure actuator 12) related to the raising / lowering of the chair member 11 is compared with the techniques of Patent Documents 1-6. ) Does not require excessive strength, so that the manufacturing cost can be reduced.
Therefore, according to the first embodiment, the problems 1b, 2b, 3b, 4b, 5b and 6b can be solved.

  [3] The rotation shaft 19 b pivotally supports the base 13 and the flat plate 19 a of the pedestal 19 immediately below the fluid pressure actuator 12. The base 13 is attached to the pedestal 19 so as to be rotatable by a rotation shaft 19b.

  That is, in the first embodiment, each member (elevating support member, pulleys 14a and 14b) related to raising and lowering of the chair member 11 is used without using the structure (the slider plate and the lateral arm portion) as in the technique of Patent Document 1. , 15a, 15b, wires 16a, 16b, and fluid pressure actuator 12) are rotated with respect to the pedestal 19, so that a care recipient sits on the chair member 11 and is loaded. The base 13 can be stably and reliably rotated with good balance.

Therefore, in 1st Embodiment, compared with the technique of patent document 1, each member (the base 13, the flat plate 19a of the base 19, and the rotating shaft 19b) which concerns on rotation of the chair member 11 does not need excessive intensity | strength. Manufacturing cost can be reduced.
Therefore, according to the first embodiment, the problem 1c can be solved.

  In the first embodiment, since the base 13 can be fixedly held with respect to the pedestal 19 by the fixing mechanism 19g, when the care recipient gets on and off the chair member 11 or raises or lowers the chair member 11. If the base 13 is fixedly held, the care recipient is prevented from falling from the chair member 11 and safety is improved.

[4] By adjusting the expansion and contraction of the frames 20a and 20b and fixing with the fixing screws 20d, the height of the leg member 20 can be varied in accordance with the Western-style bathtub BTa.
Therefore, according to 1st Embodiment, it is possible to set the bathing care apparatus 10 freely and easily to any height Western-style bathtub BTa, and versatility is high.

[5] The base 19 is fixed to the Western-style bathtub BTa by bringing the fixing member 21 made of a substantially rectangular metal plate into contact with the inner side of the long side edge of the Western-style bathtub BTa.
Therefore, according to 1st Embodiment, if it is a Western-style bathtub BTa of a general dimension shape, it is possible to set the bathing care apparatus 10 reliably, and its versatility is high.

[6] The armrest 22 is rotatably attached to the backrest 11b of the chair member 11 using a hinge 22a.
Therefore, according to the first embodiment, the armrest 22 does not get in the way when the care recipient gets on and off the chair member 11 by rotating the armrest 22 to a position away from the seat surface 11a of the chair member 11. Even a care recipient who is incapable of moving the body can easily get on and off the chair member 11.

[7] The elevating support member is composed of slider plates 17a and 17b and slide guides 18a and 18b.
Therefore, according to the first embodiment, the elevating support member can be manufactured with a simple structure at low cost, and the manufacturing cost of the bathing care apparatus 10 can be reduced.

[8] The wire 16a is stretched over the pulley 14a (first pulley) and the pulley 14b (second pulley). The wire 16b is stretched over the pulley 15a (first pulley) and the pulley 15b (second pulley).
Therefore, according to 1st Embodiment, compared with the case where each wire 16a, 16b is spanned over only one pulley, it is possible to support each wire 16a, 16b stably, reliably, and a chair. The member 11 can be raised and lowered smoothly.

  If one of the pulleys 14a and 14b is omitted and one of the pulleys 15a and 15b is omitted so that the wires 16a and 16b can be mounted on only one pulley, it is manufactured as compared with the first embodiment. Cost can be reduced.

[9] Two sets of constant pulley mechanisms, that is, a fixed pulley mechanism including the pulleys 14a and 14b and the wire 16a and a fixed pulley mechanism including the pulleys 15a and 15b and the wire 16b are provided.
Therefore, according to 1st Embodiment, the chair member 11 can be raised / lowered stably and reliably compared with the case where a fixed pulley mechanism is one set.

If one of the two sets of constant pulley mechanisms is omitted and only one set of constant pulley mechanisms is used, the manufacturing cost can be reduced as compared with the first embodiment.
If a plurality of sets of constant pulley mechanisms having the same configuration as the two sets of constant pulley mechanisms are provided, the chair member 11 can be raised and lowered more stably and reliably.

[10] The second ends of the wires 16 a and 16 b are fixedly attached to the lower side of the seat surface 11 a of the chair member 11.
Therefore, according to 1st Embodiment, compared with the case where the 2nd end part of each wire 16a, 16b is attached and fixed to the upper side of the seat surface 11a of the chair member 11, the chair member 11 is raised / lowered stably and reliably. be able to.

[11] The base 13 on which each member (lifting support member, pulleys 14a, 14b, 15a, 15b, wires 16a, 16b, fluid pressure actuator 12) related to the raising and lowering of the chair member 11 is placed is a Western-style bathtub BTa. It is installed outside the short side.
Therefore, in the first embodiment, only the chair member 11, the vicinity of the second ends of the wires 16a and 16b, and the fixing member 21 are immersed in the hot water stretched in the Western-style bathtub BTa.
Moreover, in the state which raised the chair member 11 and pulled up the western style bathtub BTa, no member of the bathing care apparatus 10 exists in the western style bathtub BTa.

Therefore, according to 1st Embodiment, since the member except the 2nd edge part vicinity of each wire 16a, 16b is not immersed in hot water among each member which concerns on raising / lowering of the chair member 11, each said member is hard to break down. In addition, since scale does not adhere to each member, bacteria do not grow and it is hygienic. In addition, since the interior of the Western-style bathtub BTa does not become narrow, even a care recipient with a large physique can easily take a bath.
Therefore, according to the first embodiment, the problem 1d can be solved.

[12] The fluid pressure actuator 12 is disposed on the back side of the back 11 b of the chair member 11.
Therefore, the bathing care apparatus 10 according to the first embodiment is suitable for setting the western style bathtub BTa having a long side compared to the Japanese style bathtub.

[13] The movable parts (fluid pressure actuator 12, pulleys 14a, 14b, 15a, 15b, wires 16a, 16b, slide guides 18a, 18b) of the bathing care device 10 are covered with the protective cover 23, and the movable parts are exposed. Therefore, there is no fear that a care recipient sitting on the chair member 11 or a caregiver performing bathing care of the care recipient needs to touch the movable part, and an accident in which the movable part is touched and injured can be prevented.
In addition, since the small movable part is covered with the protective cover 23 and cannot be seen by the human eye, the bathing care apparatus 10 having an excellent beauty can be provided.

<Second Embodiment>
FIG. 7 is a front view of the bathing care apparatus 30 according to the second embodiment that embodies the present invention (a state in which the chair member 11 is raised).
FIG. 8: is a principal part cross-section right view (state in which the chair member 11 rose) of the bathing care apparatus 30 of the second embodiment.
FIG. 9 is a front view of the bathing care apparatus 30 of the second embodiment (a state in which the chair member 11 is lowered).
FIG. 10: is a principal part cross-section right side view (state in which the chair member 11 is lowered) of the bathing care apparatus 30 of the second embodiment.
FIG. 11 is a top view of the main part of the bathing care apparatus 30 of the second embodiment.
FIG. 12 is a top view of the main part of the bathing care apparatus 30 of the second embodiment.

  The bathing care device 30 includes a chair member 11 (a seat surface 11a, a backrest 11b, a frame 11c), a fluid pressure actuator 12 (an expansion / contraction device: a cylinder 12a, a piston 12b), a base 13, pulleys 14a, 14b, 15a, 15b, The wires 16a and 16b, slider plates 17a and 17b, slide guides 18a and 18b, a rotating shaft 19b, a fixing mechanism 19g, a leg member 20, a fixing member 21, an armrest 22, a protective cover 23, a pedestal 31, and the like.

  The bathing care apparatus 30 of the second embodiment is different from the bathing care apparatus 10 of the first embodiment only in the following points.

  [A] The bathing care apparatus 30 is set in a substantially box-shaped Japanese style bathtub (Japanese style bathtub) BTb installed on the floor BF of the bathroom.

  [A] The base 13 is installed outside the short side of the Western-style bathtub BTa.

  [C] The fluid pressure actuator 12 is disposed on the left side surface of the chair member 11 toward the back rod 11b.

[D] The pedestal 31 is placed and fixed on the leg member 20.
The pedestal 31 includes a flat plate 19a, a rotating shaft 19b, a fixing mechanism 19g, an attachment member 31a, a fixing screw 31b, and the like.

The base 13 is placed on the flat plate 19 a of the base 31.
The rotating shaft 19 b pivotally supports the base 13 and the flat plate 19 a of the base 31 immediately below the fluid pressure actuator 12.
And the base 13 is attached with respect to the base 31 so that rotation is possible by the rotating shaft 19b.
The fixing mechanism 19 g fixes and holds the base 13 with respect to the base 31.

The upper ends of the frames 20a and 20b of the leg member 20 are fixedly attached to the lower surface of the flat plate 19a.
The attachment member 31a is made of a long metal member having a rectangular cross section, and is placed on the short edge of the Japanese-style bathtub BTb. The attachment member 31a is composed of two cylindrical members, and the two cylindrical members are telescopically inserted into and retractable, and the two cylindrical members are fixed using fixing screws 31b. The length of the attachment member 31a can be optimally adjusted according to the length of the short side of the bathtub BTb.

The fixing member 21 is attached and fixed to the attachment member 31 a of the pedestal 31.
And the base 31 is fixed with respect to the western-style bathtub BTa by making the fixing member 21 contact | abut inside the long side edge of Japanese-style bathtub BTb.

[Operation and Effect of Second Embodiment]
The operation method of the bathing care apparatus 30 of the second embodiment is the same as the operation method of the bathing care apparatus 10 of the first embodiment.

According to the bathing care apparatus 30 of the second embodiment, the same actions and effects as the above [1] to [11] of the actions and effects of the first embodiment can be obtained.
And in 2nd Embodiment, the fluid pressure actuator 12 is arrange | positioned at the side surface side of the spine 11b of the chair member 11. FIG.
Therefore, the bathing care apparatus 30 of the second embodiment is suitable for setting in a Japanese style bathtub BTb having a shorter long side compared to the Western style bathtub BTa, and even in a narrow Japanese style bathtub BTb compared to the Western style bathtub BTa, Easy to bathe.

<Third Embodiment>
3rd Embodiment materializes the structure of the footrest 24 used with the bathing care apparatus 10 and 30 of 1st Embodiment or 2nd Embodiment.
FIG. 13 is an explanatory diagram for explaining the footrest 24.

The footrest 24 includes a slide guide 24 a, a slider 24 b, a slide plate 24 c, a heel pressing member 24 d, and the like, and is slidably attached to the seat surface 11 a of the chair member 11.
The slide guide 24 a is made of a long metal material having a U-shaped cross section, and is fixedly attached to the lower surface of the seat surface 11 a of the chair member 11.

The slider 24b is made of a long metal plate, is fitted to the slide guide 24a, is slidably supported, and is fixedly attached to the lower surface of the flat slide plate 24c.
A plurality of bearings (not shown) are provided between the slide guide 24a and the slider 24b, and the slider 24b can slide smoothly with respect to the slide guide 24a via the bearing without rattling. ing.
A substantially cylindrical scissor retaining member 24d is attached and fixed to the top surface of the distal end portion of the slide plate 24c.

[Operation and Effect of Third Embodiment]
As shown in FIG. 13A, when the slide plate 24c of the footrest 24 is slid toward the slide guide 24a, the slide plate 24c is housed on the lower surface side of the seat surface 11a of the chair member 11. The portion below the knee of the care recipient who sat on the chair member 11 hangs down from the seat surface 11a.
In this state, as shown in FIG. 5, FIG. 6 or FIG. 11 and FIG. 12, when the base 13 is rotated with respect to the pedestals 19 and 31, the lower part from the knee of the care recipient's foot is the bathtub BTa. , BTb may be caught on the long edge.

  If the legs of the care recipient are caught on the long edges of the bathtubs BTa and BTb, the rotation of the base 13 with respect to the pedestals 19 and 31 is hindered, and the care recipient may be injured.

Therefore, as shown in FIG. 13B, when the slide plate 24c of the footrest 24 is pulled out from the lower surface side of the seating surface 11a of the chair member 11, the feet of the care recipient sitting on the chair member 11 are Since the heel of the person requiring care is pushed up on the slide plate 24c and the heel of the care recipient is brought into contact with the heel pressing member 24d, the foot of the care recipient is substantially held by the slide plate 24c and is lowered from the knee of the foot of the care recipient. This part will not hang down from the seating surface 11a.
In this state, as shown in FIG. 5, FIG. 6 or FIG. 11 and FIG. 12, if the base 13 is rotated with respect to the pedestals 19 and 31, the portion below the knee of the care recipient's foot is the bathtub. It is possible to prevent catching on the long edges of BTa and BTb.

  Therefore, according to the third embodiment, the feet of the care recipient are not caught on the long side edges of the bathtubs BTa and BTb, so that the base 13 can be reliably and easily rotated with respect to the bases 19 and 31, and The caregiver's foot injury can be prevented to increase safety.

<Fourth embodiment>
4th Embodiment materializes the structure of the fluid pressure actuator 12 used with the bathing care apparatus 10 and 30 of 1st Embodiment or 2nd Embodiment.
In addition to the cylinder (outer cylinder) 12a and the piston (inner cylinder) 12b, the fluid pressure actuator 12 includes a disk member 41, a stopper guide 42, a seal member 43, a stopper (locking pin) 44, a three-way valve 45, a relief valve 46, It is composed of a plug member 47 and the like.

14A is a longitudinal sectional view of the cylinder 12a, and FIG. 14B is a left side view of the cylinder 12a.
The cylinder 12a is made of a metal cylinder whose bottom is closed and whose top is open.
At the same height position on the side wall of the cylinder 12a, three oval through holes 40a are formed penetrating with the same interval in the circumferential direction of the cylinder 12a.

A tap water inlet / outlet hole 40b is formed through the portion of the side wall of the cylinder 12a close to the bottom surface.
The inlet / outlet hole 40b is attached from the three-way valve 45 to a water tap (not shown) via a hose (not shown).

  The three-way valve 45 is switched between a water injection side for flowing tap water into the cylinder 12a, a drain side for discharging tap water in the cylinder 12a, and a water stop side for stopping the flow of tap water into the cylinder 12a. It is done.

FIG. 15 is a longitudinal sectional view of the piston 12b.
FIG. 16A is a top view of the piston 12b, and FIG. 16B is a bottom view of the piston 12b.

The piston 12b is made of a metal cylinder whose bottom surface and top surface are closed, and its inside is a cavity.
A circular through hole 40e is formed through the upper surface of the piston 12b.
The through hole 40e communicates with a cavity in the piston 12b, and a relief valve 46 is attached to the through hole 40e. That is, the relief valve 46 is connected to the cavity in the piston 12b.
A through hole 40f is formed through the center of the bottom surface of the piston 12b.
Three circular through holes 40g are formed through the bottom surface of the piston 12b at the same interval, and each through hole 40g is disposed at the same distance from the through hole 40f.
Each through hole 40f, 40g communicates with a cavity in the piston 12b.

  17A is a top view of the disk member 41, FIG. 17B is a longitudinal sectional view of the disk member 41, and FIG. 17C is a bottom view of the disk member 41. FIG.

The disk member 41 includes metal disks 41a and 41b, a metal cylinder 41c, and bolts 41d.
Each of the disks 41a and 41b is fixedly attached to the upper and lower openings of the cylinder 41c.
The outer diameter of the cylinder 41c is smaller than the outer diameter of each of the disks 41a and 41b, and the central axis of the cylinder 41c coincides with the center of each of the disks 41a and 41b.

A bolt 41d is attached and fixed using a nut at the center of the upper surface of the disk 41a, and the bolt 41d protrudes upward from the disk 41a.
Two circular ellipsoidal through holes 41e communicating with the inside of the cylinder 41c are formed through the disk 41a.

  In the circular plate 41b, five circular through holes 41f communicating with the inside of the cylinder 41c are formed penetrating at the same interval, and eight through holes 41g not communicating with the inside of the cylinder 41c are formed at the same interval. A through hole is formed.

  18A is a top view of the stopper guide 42, FIG. 18B is a front view of the stopper guide 42, and FIG. 18C is a bottom view of the stopper guide 42.

The stopper guide 42 is made of a metal disk, and a circular through hole 42 a is formed through the center of the stopper guide 42.
In the stopper guide 42, three circular through holes 42b are formed penetrating at the same interval.

On the upper surface of the stopper guide 42, three grooves 42c are formed from the recess 42e to the peripheral edge. Each groove 42c avoids each through hole 42b and is arranged radially with the same interval. The longitudinal center part of each groove 42c is formed deep, and both longitudinal parts of each groove 42c are formed shallow.
Three grooves 42d are formed in the lower surface of the stopper guide 42 from the vicinity of the center to the peripheral edge. Each groove 42d is arranged directly below each groove 42c.
In the center of the upper surface of the stopper guide 42, a bowl-shaped recess 42e is formed.

FIG. 19A is a top view of the seal member 43, and FIG. 19B is a longitudinal sectional view of the seal member 43.
The seal member 43 is made of a disk made of a flexible material (for example, rubber, synthetic resin, etc.).
A circular through hole 43 a is formed through the center of the seal member 43.
In the seal member 43, three circular through holes 43b are formed penetrating at the same interval.

  20A is a left side view of the stopper 44, FIG. 20B is a top view of the stopper 44, FIG. 20C is a front view of the stopper 44, FIG. 20D is a bottom view of the stopper 44, and FIG. (E) is a right side view of the stopper 44.

Each stopper 44 is made of a substantially rectangular metal column having the same dimensions.
A tapered portion 44 a that is inclined downward toward the tip portion is formed above the tip portion of each stopper 44.
A locking portion 44b is formed by cutting off the rear end portion of each stopper 44.
A locking portion 44c is formed by cutting off the lower end of each stopper 44.

FIG. 21 to FIG. 27 and FIG. 34 are explanatory views for explaining the operation of the fluid pressure actuator 12 and are schematic longitudinal sectional views of the main part of the fluid pressure actuator 12.
28 is an enlarged view of the main part of FIG. 21, FIG. 29 is an enlarged view of the main part of FIG. 22, FIG. 30 is an enlarged view of the main part of FIG. 23, FIG. FIG. 33 is an enlarged view of a main part of FIG. 27, and FIG. 35 is an enlarged view of a main part of FIG.

  21 to 35 show a state in which the members constituting the fluid pressure actuator 12 (cylinder 12a, piston 12b, disk member 41, stopper guide 42, seal member 43, stopper 44, plug member 47) are assembled. Is.

21 to 35, in order to make the explanation of the operation of the fluid pressure actuator 12 easier to understand, the state in which the fluid pressure actuator 12 is cut into a comb shape is illustrated to show important members (the through hole 40a of the cylinder 12a, the stopper guide). 42, two grooves 42c and 42d, and a stopper 44) are shown, and in addition, the inlet / outlet hole 40b of the cylinder 12a is changed from the actual position (see FIG. 14).
Further, FIGS. 21 to 33 and FIGS. 34 and 35 are different from each other in the portion taking the longitudinal section of the fluid pressure actuator 12.

  The plug member 47 is made of a metal umbrella-like material, and has an inverted conical main body portion 47a having a flat upper end, a handle portion 47b protruding upward from the center of the main body portion 47a, and a coil spring inserted through the handle portion 47b. 47c.

Each stopper 44 is fitted to the longitudinal center of each groove 42 c of the stopper guide 42, and the main body 47 a of the plug member 47 is fitted to the recess 42 e of the stopper guide 42.
The upper surface of the stopper guide 42 to which the stoppers 44 and the stopper members 47 are attached is fixedly attached to the outer bottom surface of the piston 12b using bolts (not shown).
A seal member 43 is attached to the bottom surface of the stopper guide 42.
Therefore, the piston 12b, the stopper guide 42, and the seal member 43 are integrated to form the workpiece IB.

As shown in FIGS. 34 and 35, the through holes 40g of the piston 12b, the through holes 42b of the stopper guide 42, and the through holes 43b of the seal member 43 are formed to have the same diameter and communicate with each other. One through hole 40h is formed by the overlapped through holes 40g, 42b, and 43b.
That is, three through holes 40h are formed through the work IB at the same interval. Each through hole 40h is disposed at the same distance from the through hole 40f of the piston 12b and communicates with a cavity in the piston 12b.

The handle 47b of the plug member 47 is slidably inserted into the through hole 40f of the piston 12b.
The coil spring 47c of the plug member 47 presses the main body portion 47a of the plug member 47 against the concave portion 42e of the stopper guide 42 to hold the main body portion 47a and the concave portion 42e in a liquid-tight state.

In order to assemble the fluid pressure actuator 12, the disk member 41 is first inserted into the cylinder 12a, and then the workpiece IB is inserted. That is, the disk member 41 is inserted between the inner bottom surface of the cylinder 12a and the piston 12b.
Here, the outer diameters of the piston 12b, the discs 41a and 41b, the stopper guide 42, and the seal member 43 are formed to have substantially the same diameter that is slightly smaller than the inner diameter of the cylinder 12a.

[Operation Method of Fluid Pressure Actuator 12]
In the fluid pressure actuator 12 of the fourth embodiment, the piston 12b (work IB) is lifted (extension motion) according to the operations of the following steps 1 to 4, and the piston 12b is lowered (according to the operations of procedures 5 to 7). (Retraction operation) is performed.

<Procedure 1>
As shown in FIGS. 21 and 28, the three-way valve 45 is switched to the water injection side, and the tap water w is caused to flow into the cylinder 12a from the inlet / outlet hole 40b.
Then, the tap water w fills a space Sa surrounded by the outer wall surface of the cylinder 41c of the disk member 41, the respective discs 41a and 41b of the disk member 41, and the inner wall surface of the cylinder 12a.

<Procedure 2>
As shown in FIGS. 22 and 29, the tap water w filling the space Sa passes from the through holes g of the disc 41b of the disc member 41 to the disc 41b of the disc member 41 and the inner bottom surface of the cylinder 12a. It flows into the enclosed space Sb and fills the space Sb.
Then, an upward pressing force is applied to the disk 41 b of the disk member 41 by the water pressure of the tap water w filling the space Sb, the disk member 41 is lifted, and the disk 41 a comes into contact with the seal member 43.

As a result, the bolt 41 d of the disk member 41 passes through the through hole 42 a of the stopper guide 42 from the through hole 43 a of the seal member 43 and abuts against the main body portion 47 a of the stopper member 47 to be pressed. That is, when the water pressure of the tap water w is applied to the disk member 41, the disk member 41 moves toward the work IB (plug member 47), and the disk member 41 presses the main body portion 47 a of the plug member 47.
Then, the main body 47a moves upward against the spring force of the coil spring 47c, the main body 47a and the recess 42e of the stopper guide 42 are separated from each other, and the liquid-tight state is broken.

  At this time, since the locking portion 44b provided at the rear end portion of each stopper 44 is in contact with the protrusion provided on the stopper guide 42, each stopper 44 is locked and does not move to the rear end side. Therefore, there is no possibility that the rear end portion of each stopper 44 hinders the operation of the plug member 47.

  Thereafter, the tap water w fills the space Sc in the cylinder 41 c of the disk member 41, first passes through the through holes 41 e of the disk member 41, then passes through the through holes 42 a of the stopper guide 42, and then continues. The space Sd that passes through the gap between the main body 47a and the recess 42e of the plug member 47 and is surrounded by the main body 47a, the rear end of each stopper 44, and the outer bottom surface of the piston 12b is filled.

  Then, upward pressure is applied to the work IB (piston 12b, stopper guide 42, seal member 43) by the water pressure of the tap water w filling each of the spaces Sa to Sd, and the work IB moves up in the cylinder 12a. go.

At this time, the outer diameter of each member (piston 12b, stopper guide 42, seal member 43) constituting the workpiece IB is formed to be substantially the same diameter slightly smaller than the inner diameter of the cylinder 12a. A gap (for example, several mm of comma) is formed in the inner wall.
Therefore, the tap water w filling the space Sd passes through the gaps between the grooves 42c of the stopper guide 42 and the stoppers 44 (both sides in the longitudinal direction of the grooves 42c) and enters the gap between the workpiece IB and the inner wall of the cylinder 12a. Inflow.

The tap water w filling the space Sc passes through the grooves 42d of the stopper guide 42 from the through holes 41e of the disk member 41 through the through holes 43a of the seal member 43, and between the workpiece IB and the inner wall of the cylinder 12a. Flows into the gap.
As a result, the tap water w flowing into the gap between the workpiece IB and the inner wall of the cylinder 12a functions as a lubricating liquid, and the workpiece IB slides smoothly without rattling in the cylinder 12a.

<Procedure 3>
As shown in FIG. 23 and FIG. 30, when the workpiece IB moves up in the cylinder 12a due to the water pressure of the tap water w and each stopper 44 comes to the position of each through hole 40a of the cylinder 12a, the tip of each stopper 44 is Each is in a state that matches the position of each through hole 40a.

At this time, the water pressure of the tap water w filling the space Sd is applied to the rear end portion of each stopper 44, and each stopper 44 is pressed toward the tip end side by the water pressure. The tip portions are fitted into the respective through holes 40a and protrude from the outer peripheral wall surface of the cylinder 12a.
As a result, each stopper 44 is locked in each through hole 40a of the cylinder 12a, the work IB is fixedly held with respect to the cylinder 12a, and the ascent of the work IB is stopped.

  Here, since each through hole 40a of the cylinder 12a has an oval shape, each stopper 44 is securely fitted to each through hole 40a even if the work IB is slightly rotated in the cylinder 12a. .

  At this time, since the locking portion 44c provided at the tip of each stopper 44 abuts against the protrusion provided on the stopper guide 42, each stopper 44 is locked and does not separate from the stopper guide 42. There is no possibility that 44 will drop out of the cylinder 12a.

Since each through hole 40a of the cylinder 12a has an oval shape, the tap water w filling the space Sd becomes a gap between each groove 42c of the stopper guide 42 and each stopper 44 (both sides in the longitudinal direction of each groove 42c). And flow out from the gaps on both sides of each through hole 40a fitted with each stopper 44 to the outside of the cylinder 12a as shown by an arrow α.
Therefore, if the tap water w flows out from each through hole 40a of the cylinder 12a, it can be determined that the workpiece IB is fixedly held with respect to the cylinder 12a.
Then, if the tap water w flows out from each through hole 40a of the cylinder 12a, the three-way valve 45 is switched to the water stop side to stop the inflow of the tap water w into the cylinder 12a.

<Procedure 4>
As shown in FIGS. 24 and 31, when the three-way valve 45 is switched to the water stop side and the inflow of the tap water w into the cylinder 12 a is stopped, the water pressure of the tap water w is not applied to the disk member 41, The disk member 41 descends to the inner bottom surface of the cylinder 12a by its own weight.

Then, the contact between the bolt 41d of the disk member 41 and the main body portion 47a of the plug member 47 is released, and the bolt 41d does not press the main body portion 47a, so that the main body is driven by the spring force of the coil spring 47c of the plug member 47. The portion 47a is pressed against the recess 42e of the stopper guide 42, and the main body 47a and the recess 42e are held in a liquid-tight state.
As a result, after the tap water w filling the space Sd flows out from each through hole 40a of the cylinder 12a, the space Sd is filled with air.

That is, when the water pressure of the tap water w is no longer applied to the disc member 41, the pressure on the main body portion 47a of the plug member 47 by the bolt 41d of the disc member 41 is released, and the tap water w flows out of the space Sd and is filled with air. Therefore, the application of the water pressure of the tap water w to each stopper 44 is also released.
That is, the stopper member 47 applies the water pressure of the tap water w to each stopper 44 when the main body 47a is pressed by the bolt 41d of the disk member 41, and each stopper 44 when the main body 47a is not pressed by the bolt 41d. This prevents the water pressure of the tap water w from being applied.

  The spring force of the coil spring 47c of the plug member 47 is such that the liquid-tight state between the main body 47a and the recess 42e of the stopper guide 42 is not broken even when the water pressure of tap water w is applied to the main body 47a. Is set.

<Procedure 5>
As shown in FIG. 25, the three-way valve 45 is switched to the water injection side, and the tap water w flows into the cylinder 12a from the inlet / outlet hole 40b.
Then, an upward pressing force is applied to the workpiece IB by the water pressure of the tap water w.
At this time, the space Sd is filled with air, and the water pressure of the tap water w is not applied to the rear end of each stopper 44. In addition, a tapered portion 44 a is provided at the tip of each stopper 44.

Therefore, when an upward pressing force is applied to the workpiece IB, the tapered portion 44a slides on the upper edge portion of the through hole 40a of the cylinder 12a, and the stoppers 44 are located on the inner side of the grooves 42c of the stopper guide 42, respectively. The stopper 44 b of each stopper 44 is held in contact with the protrusion of the stopper guide 42.
As a result, the engagement between the tip of each stopper 44 and each through hole 40a of the cylinder 12a is released, and the work IB slightly rises in the cylinder 12a due to the water pressure of the tap water w applied to the work IB. .

<Procedure 6>
As shown in FIG. 26 and FIG. 32, the fitting between the distal end portion of each stopper 44 and each through hole 40a of the cylinder 12a is released, and the work IB slightly rises in the cylinder 12a due to the water pressure of the tap water w, When the respective grooves 42d of the stopper guide 42 reach the positions of the respective through holes 40a of the cylinder 12a, the respective grooves 42d are in agreement with the positions of the respective through holes 40a.
Then, the tap water w in the cylinder 12a passes through each groove 42d of the stopper guide 42 via the through hole 43a of the seal member 43, and is indicated by an arrow α from each through hole 40a of the cylinder 12a to the outside of the cylinder 12a. Flows out.

Therefore, if the tap water w flows out from each through hole 40a of the cylinder 12a, it can be determined that the fitting between each stopper 44 and each through hole 40a in the cylinder 12a is released.
Therefore, when the tap water w flows out from each through hole 40a of the cylinder 12a, the three-way valve 45 is switched to the drain side, and the tap water w in the cylinder 12a is caused to flow out of the inlet / outlet hole 40b.

If the three-way valve 45 is left switched to the water injection side without switching to the drain side, and tap water w continues to flow into the cylinder 12a from the inlet / outlet port 40b, the inside of the cylinder 12a from the inlet / outlet port 40b Almost all of the tap water w flowing into the water flows out from the through holes 40a.
For this reason, even if the tap water w continues to flow into the cylinder 12a from the inlet / outlet 40b, the workpiece IB rises to a certain position, and the workpiece IB continues to rise and does not leave the cylinder 12a.

<Procedure 7>
As shown in FIG. 27 and FIG. 33, when the three-way valve 45 is switched to the drain side and the tap water w in the cylinder 12a is caused to flow out of the inlet / outlet hole 40b, the water pressure of the tap water w is not applied to the work IB. Depending on the outflow speed of w, the workpiece IB descends in the cylinder 12a by its own weight.
At this time, since the disk member 41 also descends in the cylinder 12a by its own weight, the disk member 41 and the workpiece IB finally return to the state shown in FIGS.

[Operations and effects of the fourth embodiment]
According to the fluid pressure actuator 12 of the fourth embodiment, the following operations and effects can be obtained.

[1] In the fourth embodiment, the fluid pressure actuator 12 can be used simply by connecting the three-way valve 45 to a faucet faucet provided in the bathroom via a hose. Since no drive device is required, it can be easily installed in any bathroom.
Therefore, according to the fourth embodiment, the problem 3c can be solved.

  [2] In the fourth embodiment, the raising / lowering operation of the piston 12b can be easily switched only by the switching operation of the three-way valve 45, and the operability is excellent.

[3] When the piston 12b is raised, the stoppers 44 are locked in the through holes 40a of the cylinder 12a, and the piston 12b (work IB) is fixedly held (locked) with respect to the cylinder 12a, Even if the tap water w flows out of the cylinder 12a or the water pressure of the tap water w decreases due to a reason (for example, failure of the three-way valve 45, hose disconnection or hose breakage), the piston 12b is not lowered. Absent.
Therefore, in the fluid pressure actuator 12 of the fourth embodiment, once the piston 12b is raised to a predetermined position set by each through hole 40a of the cylinder 12a, the piston 12b is unnecessarily lowered against the intention of the operator. Can be prevented.

Further, as described in the first embodiment, in the bathing care devices 10 and 30, the care recipient is seated on or lowered from the chair member 11 with the piston 12b raised.
In the fluid pressure actuator 12 of the fourth embodiment, when the piston 12b is raised, the piston 12b is fixed and held stably by the stoppers 44, not by the water pressure of the tap water w, so that the piston 12b is stably and reliably fixed. Since it is held, it is possible to prevent the chair member 11 from moving up and down and shaking or sinking, and it is easy to use.
Therefore, according to the fourth embodiment, the problems 5c, 6c, and 7b can be solved.

[4] In the fourth embodiment, since the elastomer bellows and the cloth cylinder of Patent Document 7 are not used, and only the seal member 43 is not made of metal among the constituent members, the structure of the fluid pressure actuator 12 is strong. It is difficult to cause secular change and the operation cost is low.
Therefore, according to the fourth embodiment, the problem 7a can be solved.

  [5] In the fluid pressure actuator 12 of the fourth embodiment, the three-way valve 45 is switched to the water injection side to raise (extend) the piston 12b, and each stopper 44 is fitted to each through hole 40a of the cylinder 12a. When locked, a first water flow path for flowing tap water w from each through hole 40a (through hole 43a of seal member 43 → through hole 42a of stopper guide 42 → space Sd → each groove of stopper guide 42) 42c and the stoppers 44 are provided (spaces in the longitudinal direction of the grooves 42c).

  Therefore, according to the fourth embodiment, it can be determined that the work IB is fixedly held with respect to the cylinder 12a when the tap water w flows out from the through holes 40a of the cylinder 12a.

  [6] In the fluid pressure actuator 12 of the fourth embodiment, the three-way valve 45 is switched to the water injection side in order to lower (retract) the piston 12b, and the engagement between the stoppers 44 and the through holes 40a of the cylinder 12a is released. When this is done, a second water flow path (the through holes 43a of the seal member 43 → the respective grooves 42d of the stopper guide 42) for flowing out the tap water w from the respective through holes 40a is provided.

Therefore, according to the fourth embodiment, when the tap water w flows out from each through hole 40a of the cylinder 12a, it is confirmed that the fitting between each stopper 44 and each through hole 40a in the cylinder 12a is released. Can be judged.
Further, as described in the procedure 6, even when the three-way valve 45 is left switched to the water injection side without switching to the drain side, almost all of the tap water w flowing into the cylinder 12a from the inlet / outlet hole 40b is left. Since it flows out from each through hole 40a, the ascent of the work IB is restricted to a certain position, and the work IB continues to rise and does not leave the cylinder 12a.

[7] As shown in FIGS. 34 and 35, the work IB has three through holes 40h formed therethrough. The through hole 40h is formed by overlapping the through hole 40g of the piston 12b, the through hole 42b of the stopper guide 42, and the through hole 43b of the seal member 43.
That is, each through hole 40h is provided at a location where the pressure of the tap water w is applied by the piston 12b.

A relief valve 46 is attached to the through hole 40e of the piston 12b, and the inside of the piston 12b is filled with air.
Therefore, even if each space Sa to Sd is filled with tap water w by the air pressure inside the piston 12b and the lower opening of each through hole 40h of the workpiece IB is exposed to the tap water w, the space Sa to Sd The tap water w does not enter the piston 12b through each through hole 40h.

However, when an excessive load equal to or greater than the set load is applied to the piston 12b and the air pressure inside the piston 12b becomes higher than the set pressure of the relief valve 46, the relief valve 46 is opened, and the air inside the piston 12b It is discharged to the outside through the through hole 40 e through 46.
Then, the air pressure inside the piston 12b decreases, and the amount of tap water w corresponding to the decrease in the air pressure passes from each through hole 41e of the disk member 41 through each through hole 40h of the workpiece IB, and inside the piston 12b. Invade into.

  Then, when the air pressure inside the piston 12b decreases and becomes equal to or lower than the set pressure of the relief valve 46, the relief valve 46 is closed, leaving the tap water w that has entered the piston 12b up to that point, and a larger amount of water. The tap water w is stopped from entering the piston 12b through the through holes 40h of the workpiece IB.

  Therefore, even if the tap water w continues to flow into the cylinder 12a from the inlet / outlet hole 40b when an excessive load that is equal to or greater than the set load is applied to the piston 12b, the rise of the piston 12b corresponds to the set load. It is constrained by.

  Therefore, in the fluid pressure actuator 12 of the fourth embodiment, a part of the body of the care recipient (for example, a hand, a leg, etc.) is sandwiched between some members of the bathing care devices 10 and 30, and the piston 12b is prevented from rising. Thus, when an excessive load that is equal to or greater than the set load is applied to the piston 12b, the piston 12b will resist the load even if the tap water w continues to flow into the cylinder 12a from the inlet / outlet hole 40b. It will not continue to rise.

As a result, according to the fourth embodiment, it is possible to prevent an accident in which an excessive force is applied to the body when a part of the body of the care recipient is sandwiched between the bathing care devices 10 and 30. Yes, it can increase safety.
The set load of the piston 12b may be set to an appropriate value by adjusting the set pressure of the relief valve 46.

<Another embodiment>
The present invention is not limited to the above-described embodiments, and may be embodied as follows. Even in this case, operations and effects equivalent to or higher than those of the above-described embodiments can be obtained.

(1) In the bathing care devices 10 and 30 of the first embodiment or the second embodiment, the fluid pressure actuator 12 driven by tap water is used as an expansion / contraction device.
However, the present invention may be embodied in any configuration as long as it is a telescopic device that expands and contracts in the vertical direction. For example, a cylinder device having the same configuration as Patent Documents 1 to 7 and a hydraulic actuator driven by hydraulic pressure Alternatively, a fluid pressure actuator driven by air pressure, a telescopic device having a rack and pinion mechanism and rotating the pinion with an electric motor may be used.

(2) In the bathing care devices 10 and 30 of the first embodiment or the second embodiment, the elevating support member constituted by the slider plates 17a and 17b and the slide guides 18a and 18b is used.
However, the present invention may be embodied in any configuration as long as it is a lifting support member capable of supporting the chair member 11 to move up and down. For example, a plurality of tubular members are telescopically inserted and expanded. A member that is free or a member that includes a rack and pinion mechanism may be used.

(3) In the fluid pressure actuator 12 of the fourth embodiment, three sets of the through hole 40a and the stopper 44 of the cylinder 12a are provided, but one set, two sets, or four or more sets of the through hole 40a and the stopper 44 may be provided. Good.
The fewer the through holes 40a and the stoppers 44 are provided, the more the manufacturing cost can be reduced.

DESCRIPTION OF SYMBOLS 10,30 ... Bathing care apparatus 11 ... Chair member 11a ... Seat surface 11b ... Backrest 11c ... Frame 12 ... Fluid pressure actuator (extension apparatus)
12a ... Cylinder 12b ... Piston 13 ... Base 14a, 15a ... First pulley 14b, 15b ... Second pulley 16a, 16b ... Wire 17a, 17b ... Slider plate (lifting support member)
18a, 18b ... Slide guide (lifting support member)
19, 31 ... Base 19b ... Rotating shaft 19g ... Fixing mechanism 20 ... Leg member 21 ... Fixing member 22 ... Armrest 23 ... Protective cover 24 ... Footrest BF ... Bathroom floor BTa ... Western style bathtub BTb ... Japanese style bathtub 40a ... Through hole (locking hole)
40h ... through hole (water injection hole)
41 ... Disk member (pressing member)
42 ... Stopper guide (water pressure application member)
43 ... Seal member 44 ... Stopper 45 ... Three-way valve 46 ... Relief valve 47 ... Plug member (water pressure applying member)

Claims (17)

A chair member having a seat surface and a dorsal fin;
A telescopic device that expands and contracts in the vertical direction;
A base on which the lower end of the telescopic device is fixedly mounted;
A pulley attached to the upper end of the telescopic device;
A wire hung on the pulley, a first end portion of the wire is fixedly attached to the base, and a second end portion of the wire is fixedly attached to the chair member;
A bathing care apparatus, comprising: an elevating support member that supports the chair member ascending and descending along the expansion / contraction direction of the expansion / contraction apparatus. The bathing care apparatus according to claim 1,
A pedestal on which the base is placed;
A rotating shaft that pivotally supports the base and the pedestal directly under the telescopic device;
A fixing mechanism for fixing and holding the base with respect to the base,
The bathing care apparatus according to claim 1, wherein the base is attached to the base so as to be pivotable by the pivot shaft. In the bathing care apparatus according to claim 2,
A leg member on which the pedestal is placed;
The bathing care apparatus characterized in that the leg member can change its height in accordance with the bathtub. In the bathing care apparatus according to claim 2 or claim 3,
A bathing care apparatus comprising a fixing member for fixing the pedestal to a bathtub. In the bathing care apparatus according to any one of claims 1 to 4,
A footrest that is slidably attached to the seat surface of the chair member;
A bathing care apparatus, wherein a foot of a care recipient seated on the chair member is placed on the footrest slid from a seating surface of the chair member. In the bathing care apparatus according to any one of claims 1 to 5,
A bathing care apparatus comprising an armrest that is pivotally attached to a backrest of the chair member. In the bathing care apparatus according to any one of claims 1 to 6,
The lifting support member is
A slider plate attached and fixed to the chair member;
A slide guide attached and fixed to the base and extending in the expansion and contraction direction of the expansion and contraction device,
The bathing care apparatus, wherein the slider plate is slidably supported with respect to the slide guide. In the bathing care apparatus according to any one of claims 1 to 7,
The pulley comprises a first pulley and a second pulley,
The bathing care apparatus characterized in that the wire is stretched over the first pulley and the second pulley. In the bathing care apparatus according to any one of claims 1 to 8,
A bathing care apparatus comprising a plurality of sets of the pulley and the wire. In the bathing care apparatus according to any one of claims 1 to 9,
The bathing care device, wherein the second end of the wire is fixedly attached to the lower side of the seat surface of the chair member. In the bathing care apparatus according to any one of claims 1 to 10,
The bathing care apparatus characterized in that the base is installed outside the bathtub. In the bathing care apparatus according to any one of claims 1 to 11,
The expansion and contraction device is disposed on the back side of the back of the chair member. In the bathing care apparatus according to any one of claims 1 to 11,
The expansion and contraction device is disposed on the side of the back of the chair member. In the bathing care apparatus according to any one of claims 1 to 13,
The telescopic device is
A cylinder,
A locking hole formed through the peripheral wall of the cylinder;
The three-way valve connected to the cylinder, the three-way valve includes a water injection side for flowing tap water into the cylinder, a drain side for discharging tap water in the cylinder, and tap water flows into the cylinder. Being able to switch to the still water side to stop
A piston inserted through the cylinder;
A fluid pressure actuator comprising an inner bottom surface of the cylinder and a pressing member inserted between the pistons,
In the piston,
A stopper that protrudes when tap water is applied,
A water pressure application member is attached so that tap water pressure is applied to the stopper when pressed by the pressing member, and tap water pressure is not applied to the stopper when not pressed by the pressing member. ,
To extend the piston,
First, the three-way valve is switched to the water injection side, and the water pressure of tap water flowing into the cylinder is applied to the piston, the water pressure of tap water is applied to the pressing member, and the pressing member is applied to the water pressure applying member. When the water pressure applying member is pressed and the stopper is in a state where it matches the position of the locking hole, tap water is applied to the stopper by the water pressure applying member, and the stopper is The piston is fixedly held in the cylinder by being protruded and fitted into the locking hole to be locked.
Thereafter, the stopper by the water pressure application member is switched by switching the three-way valve to the water stop side so that the water pressure of the tap water is not applied to the pressure member and the pressure of the water pressure application member by the pressure member is released. Cancel the application of tap water pressure to
To retract the piston,
First, by switching the three-way valve to the water injection side and applying the water pressure of tap water that has flowed into the cylinder to the piston, the fitting of the stopper and the locking hole is released,
Thereafter, the three-way valve is switched to the drainage side to prevent the tap water from being applied to the piston. The bathing care apparatus according to claim 14,
First flowing water for flowing tap water from the locking hole when the three-way valve is switched to the water injection side to extend the piston and the stopper is fitted and locked to the locking hole. A bathing care apparatus characterized by having a route. The bathing care apparatus according to claim 14 or 15,
In order to retract the piston, the three-way valve is switched to the water injection side, and when the fitting between the stopper and the locking hole is released, a second flowing water path for flowing tap water from the locking hole is provided. Bathing care device characterized by comprising. The bathing care apparatus according to any one of claims 14 to 16,
The inside of the piston is a cavity,
A relief valve connected to a cavity in the piston;
A water injection hole that is formed to penetrate at a location where tap water pressure is applied at the piston and communicates with a cavity in the piston,
When an excessive load equal to or higher than a set load is applied to the piston, and the air pressure in the piston becomes higher than the set pressure of the relief valve, the relief valve is opened, and the air in the piston is externally passed through the relief valve. Discharged into
When the air pressure in the piston is reduced, tap water of an amount corresponding to the decrease in the air pressure enters the piston through the water injection hole,
When the air pressure in the piston becomes equal to or lower than the set pressure of the relief valve, the relief valve is closed, leaving the tap water that has entered the piston up to that point, and the tap water with a larger amount of water from the water injection hole. A bathing care apparatus characterized in that the intrusion into the piston is stopped.

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