JP2023003813A - Bathing assistance rail unit device - Google Patents

Abstract

To enhance safety in assisting bathing by using a bathing assistance shower carry where a chair unit has a tilt function and a bathing assistance rail unit device.SOLUTION: A bathing assistance rail unit device 10 includes a discrimination mechanism 40 for discriminating whether a bathtub 2 has a size corresponding to a tilt of a chair unit 3c of a bathing assistance shower carry 3. The discrimination mechanism 40 includes: a linkage part 41 to link with a movement of a connection mechanism 30 with an extension operation of a rail 20; and an engagement part 43 arranged in the linkage part 41. The linkage and the extension operation are permitted/prevented in accordance with success of engagement between extension permission means 2e or extension prevention means 2d arranged in a predetermined part 2p of the bathtub 2 and the engagement part 43.SELECTED DRAWING: Figure 5

Description

The present invention relates to a rail unit device used in combination with a shower carry for assisting bathing, and more particularly to a rail unit device for bathing assistance suitable for a shower carry equipped with a chair unit with a tilt mechanism.

This type of rail unit device includes a pedestal and rails (see Patent Documents 1 and 2, etc.). Rails are housed in the pedestal and mounted in a deployable manner. When in use, the rails are unfolded over the bathtub. A person requiring assistance is seated on the chair unit of the shower carrier for bathing assistance used in combination with the rail unit device. In this state, the chair unit is transferred from the carriage of the shower carrier for bathing assistance to the rail of the rail unit device. Subsequently, the chair unit is lowered by the lift function of the chair unit, and the person requiring care is put into the bathtub together with the chair unit to take a bath. Thereafter, the person requiring assistance is taken out of the bathtub and transferred to the carriage of the shower carrier for bathing assistance by performing the reverse procedure.

JP 2015-058054 A JP 2019-051113 A

A chair unit of a shower carrier for bathing assistance also has a tilting mechanism. Tilt extends the longitudinal dimension of the chair unit. The front-rear direction of the chair unit when in use is oriented in the longitudinal direction of the bathtub. On the other hand, the long dimension of the bathtub may not correspond to the dimension of the tilted seating unit. As a result, the footrest of the chair unit may get caught in the bathtub, or the person requiring assistance sitting on the chair unit may be injured unexpectedly. Therefore, it is necessary to tilt the chair unit after grasping that the size of the bathtub to be used is compatible with tilting. However, it is not easy to visually determine whether or not the bathtub is of a tiltable size. It is also possible to neglect judgment. It is conceivable to install the sensor on the footrest of the chair unit, but in that case waterproofing is required because the sensor enters the tank together with the footrest, and wiring of the sensor signal line becomes a problem.
SUMMARY OF THE INVENTION In view of such circumstances, it is an object of the present invention to improve the safety of bathing assistance using a bathing assistance shower carrier and a bathing assistance rail unit device having a chair unit with a tilt function.

As a result of diligent research and development to solve the above-mentioned problems, the inventor has provided a rail unit device with a function to determine whether the bathtub is of a tilt-compatible size, and if it is not of a tilt-compatible size, the rail unit device I came up with the idea of limiting the operation of
The present invention has been made based on such an idea, and is a rail unit device that supports a chair unit for bathing assistance so that it can be guided,
a pedestal;
a rail mounted on the pedestal;
a connecting mechanism for movably connecting the rails to the pedestal between an accommodation position accommodated in the pedestal and a deployed position above the bathtub;
a discrimination mechanism that discriminates whether or not the size of the bathtub corresponds to the tilt of the chair unit;
wherein the discriminating mechanism includes an interlocking portion that interlocks with the movement of the connecting mechanism accompanying the unfolding operation of the rail, and an engaging portion that is provided in the interlocking portion, and is provided at a predetermined location of the bathtub The interlocking and thus the deployment operation is permitted or prevented depending on whether the deployment permitting means or the deployment blocking means and the engaging portion are engaged with each other.

Depending on whether or not the bathtub has a tiltable size, a deployment permitting means or a deployment prevention means is provided at a predetermined position of the bathtub in advance. Specifically, in the case of a bathtub of a tiltable size, a deployment permitting means is provided. The deployment of the rail is permitted by the engagement between the deployment permitting means and the engaging portion, and the shower carry with the tilting function can be used. In the case of a bathtub of a non-tilting size, a deployment prevention means is provided. A structure that is originally present in the bathtub (such as a stile grip, which will be described later) may be used as the deployment prevention means. The deployment of the rail is prevented by the engagement between the deployment blocking means and the engaging portion, making it impossible to use the shower carry with a tilt function. As a bathing assistant, there is no need to consciously determine in advance whether or not the bathtub is of a tiltable size. As a result, the safety of bathing assistance can be improved.

As a function of the discriminating mechanism, in a bathtub of a non-tilt compatible size, the interlocking and thus the deployment operation may be prevented by engaging the deployment prevention means with the engaging portion. The interlocking and thus the deployment operation may be permitted by the deployment permitting means preventing engagement between the deployment prevention means and the engaging portion.
As the deployment-preventing means or deployment-allowing means, a structure that is originally present in the bathtub (such as a frame grip described later) may be used, or may be added to the bathtub afterwards.
As described above, a structure that is originally present in the bathtub (such as a stile grip, which will be described later) may be used as the deployment prevention means, and the deployment permitting means may be retrofitted to a bathtub of a tilt-compatible size. The deployment permitting means may prevent engagement between the structure originally present in the bathtub and the engaging portion.
Conversely, a structure that is originally present in the bathtub may be used as the deployment permitting means, and the deployment prevention means may be retrofitted to the bathtub that does not support tilting.

Preferably, the unfolding prevention means is a groove-shaped frame grip along the lower edge of the frame of the bathtub. Since the structure originally present in the bathtub is used as the deployment prevention means, there is no need to attach a dedicated deployment prevention means separately. In other words, a shower carrier with a tilting function cannot be used in a bathtub that is not provided with a deployment permitting means, and the safety of bathing assistance can be ensured.
When the engaging portion includes an engaging roller that can be engaged with the stile grip and the stile grip is provided with a deployment permitting plate as the deployment permitting means, the engagement roller is adapted to the deployment. It is preferable to be able to roll on the allowable plate and ride on the frame. As a result, in a bathtub of a size corresponding to tilting, the deployment permitting means composed of the deployment permitting plate prevents the engagement of the deployment prevention means composed of the stile grips and the engaging portion composed of the engagement rollers, thereby preventing the rails from moving. Deployment is allowed and the shower carry is enabled.

The connection mechanism includes a connection arm that spans the rail and the mount and is rotatably connected to the mount around a first axis parallel to the extending direction of the rail,
The interlocking portion may include an interlocking arm rotatably connected to the connecting arm about a second axis parallel to the first axis, and the interlocking arm may be provided with the engaging portion. preferable.
The connecting arm is rotated when the rail is deployed. In conjunction with this, the interlocking arm tries to rotate. At this time, the interlocking of the interlocking arm, the rotation of the connecting arm, and the extension of the rail are prevented or allowed depending on whether the engagement between the engaging portion and the deployment preventing means or the deployment permitting means is successful.

The rail unit device for bathing assistance restrains the interlocking arm so that it cannot rotate when the rail is in the housed position, and when the rail is deployed from the housed position toward the deployed position, the interlocking arm is restrained. It is preferable to have a regulation mechanism that permits rotation. This can prevent the discriminating mechanism from rattling when the rail is in the retracted position. Attempts to deploy the rails can activate the discriminating mechanism.

It is preferable that a rotational moment is applied to the interlocking arm in a direction in which the engaging portion moves toward the predetermined position when the rail is deployed from the stored position toward the deployed position. Thus, when the rail is to be deployed, the discriminating mechanism is activated so that the engaging portion can be reliably engaged with either the deployment permitting means or the deployment blocking means.
The rotational moment may be applied by the weight of the interlocking arm. For example, it is preferable that the center of gravity of the interlocking arm when the rail is deployed from the stored position toward the deployed position is arranged above the second axis and closer to the bathtub than the second axis. . It is preferable that the engagement roller is arranged above the center of gravity.
In the housed position, even if the center of gravity of the interlocking arm is not necessarily arranged on the bathtub side of the second axis, the movement of the connecting arm and the interlocking arm when the rail is deployed from the housed position causes the movement of the connecting arm and the interlocking arm. The center of gravity of the interlocking arm may be displaced toward the bathtub from the second axis.

According to the present invention, the rails of the rail unit device can be deployed when the bathtub is of a tiltable size, while the rails cannot be deployed when the bathtub is not of a tiltable size, so that the chair unit can be moved over the bathtub. Can not. This can improve the safety of bathing assistance.

FIG. 1 is an explanatory plan view of a bathroom in which a bathing assistance system according to one embodiment of the present invention is arranged. FIG. 2 is a front view of the bathroom during bathing assistance. FIG. 3 is a front view showing the rail unit device for bathing assistance of the bathing assistance system installed in a bathtub of a tiltable size, with the rails of the device in an accommodated state. 4 is a perspective view in the state of FIG. 3. FIG. FIG. 5 is a front view showing the rail unit device installed in the bathtub of the size corresponding to the tilt, in a state immediately after the start of the rail deployment operation of the device. FIG. 6 is a front view showing the rail unit device installed in the tilt-compatible bathtub, in a state in which the rails of the device are in the process of being deployed. FIG. 7 is a front view showing the rail unit device installed in the tiltable bathtub with the rails of the device in an unfolded state. FIG. 8 is a front view showing a rail unit device for bathing assistance installed in a bathtub of a size that does not support tilting, with the rails of the device in an accommodated state. FIG. 9 is a front view of a state in which the rails of the rail unit device are about to be deployed with respect to the non-tilt-compatible bathtub.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, for example, in a care facility, a bathing assistance system S is installed to assist a person A requiring care in bathing. The bathing assistance system S includes a bathing assistance shower carry 3 and a bathing assistance rail unit device 10 . The shower carry 3 has a carriage 3a, a first rail 3b and a chair unit 3c. A chair unit 3c is mounted on a hand-push type cart 3a via a horizontal rail 3b. The chair unit 3c has a tilt mechanism 3d. The tilt extends the chair unit 3c back and forth. The front-rear direction of the chair unit 3c during bathing is directed to the width direction of the bathtub 2 of the bathroom 1 (longitudinal direction, left-right direction in FIG. 1).

As the bathtub 2, as shown by the solid line in FIG. 2, a wide bathtub 2A corresponding to the tilting size, and as indicated by the two-dot chain line in FIG. Sometimes there is. The width (longitudinal dimension) of the tiltable bathtub 2A is, for example, 1400 mm or more. The width (longitudinal dimension) of the non-tilt-compatible bathtub 2B is, for example, about 1200 mm, which is about the same as that of a general bathtub.
A nursing facility may have a plurality of bathtubs 2, one of which may be a tiltable bathtub 2A and another may be a non-tiltable bathtub 2B.

As shown in FIG. 1, frame grips 2d are formed on the front and both sides of the bathtub 2. As shown in FIG. As shown in FIGS. 4 and 8, the frame grip 2d has a groove shape extending along the lower edge of the frame 2c.

As shown in FIGS. 3 and 4, a tiltable size bathtub 2A is retrofitted with a deployment permitting plate 2e as a deployment permitting means. The deployment permitting plate 2e is formed in a vertical flat plate shape. The deployment permitting plate 2e is fitted in a predetermined portion 2p on the back side of the bathroom in the frame grip 2d of the side portion 2w facing the side space 1s of the bathtub 2A. The outer surface of the deployment permitting plate 2e is substantially flush with the vertical outer surface of the side portion 2w of the bathtub 2A.

As shown in FIG. 8, a bathtub 2B of a non-tilting size is not provided with a deployment permitting means such as a deployment permitting plate 2e (FIG. 4). In the bathtub 2B, the frame grip 2d is also exposed at a predetermined portion 2p on the bathroom back side of the side portion 2w. A frame grip 2d at a predetermined portion 2p of the bathtub 2B constitutes deployment prevention means.

As shown in FIGS. 1 and 2, a bathing assistance rail unit device 10 is arranged in the lateral space 1s. The rail unit device 10 is used in combination with the shower carrier 3, and supports the chair unit 3c so as to be able to be guided when the person requiring care enters the bath.

As shown in FIGS. 3 and 4 , the rail unit device 10 includes a pedestal 11 , a second rail 20 and a connecting mechanism 30 . A rail 20 is mounted on the frame 11 . The extending direction of the rails 20 is directed horizontally in the depth direction of the bathtub 2 (transverse direction, the direction perpendicular to the paper surface in FIG. 3).

As shown in FIGS. 3 and 4, a connecting mechanism 30 is provided between the rail 20 and the mount 11. As shown in FIG. The connecting mechanism 30 includes a pair of connecting arms 31 provided at both ends of the rail 20 and a deployment shaft portion 32 for each connecting arm 31 . The connecting arm 31 spans the rail 20 and the pedestal 11 . The shape of the connecting arm 31 is, for example, a substantially triangular plate shape. An end forming the base of the triangle of the connecting arm 31 is fixed to the bottom surface of the rail 20 . A connecting arm 31 protrudes from the bottom surface of the rail 20 in a direction orthogonal to the extending direction of the rail 20 . A protruding end of the connecting arm 31 is rotatably connected to the bracket 12 of the pedestal 11 via the deployment shaft 32 . The deployment shaft portion 32 is arranged on the horizontal _first axis L1 parallel to the extending direction of the rail 20 . As a result, as shown in FIGS. 3 to 7, the rails 20 are moved to the retracted position (FIG. 3) and the deployed position (FIG. 7) around the _first axis L1 with respect to the gantry 11 via the connecting mechanism 30. is rotatably connected between the

As shown in FIG. 3, the rails 20 in the storage position are stored in the pedestal 11 while being tilted downward. As shown in FIG. 7, rails 20 in the deployed position are supported horizontally on bathtub 2 . As the rail 20 is deployed, the connecting arm 31 is rotated around the _first axis L1.

As shown in FIGS. 3 and 4, the connection mechanism 30 is linked with a discrimination mechanism 40 that discriminates whether or not the bathtub 2 has a tiltable size. The determination mechanism 40 includes an interlocking arm 41 (interlocking portion) and an engaging roller 43 (engaging portion). An intermediate portion of the interlocking arm 41 is rotatably coupled to an intermediate portion of the coupling arm 31 on the back side of the bathroom in the coupling mechanism 30 via a coupling shaft portion 42 . The connecting shaft portion 42 is arranged on a _second axis L2 parallel to the _first axis L1. As shown in FIGS. 3 to 7, the interlocking arm 41 rotates (revolves) together with the connecting arm 3 around the _first axis L1 in conjunction with the movement of the connecting mechanism 30 accompanying the unfolding operation of the rail 20. and can rotate (rotate) about the _second axis L2 with respect to the connecting arm 31 .

As shown in FIG. 3, the interlocking arm 41 has, for example, a substantially Y shape when viewed from the front. Specifically, the interlocking arm 41 includes a trunk arm portion 44 and branch arm portions 45, 46, and 47 at both ends thereof. As shown in FIG. 3 , when the rail 20 is in the retracted position, the trunk arm portion 44 stands substantially upright so as to extend upward from the connecting shaft portion 42 . An engaging arm portion 45 and a locking arm portion 46 are bifurcated from the upper end portion (tip portion) of the trunk arm portion 44 . A regulating arm portion 47 at the lower end portion (base end portion) of the trunk arm portion 44 is formed in an L shape and extends downward from the connecting shaft portion 42 .

As shown in FIG. 3, an engagement roller 43 is rotatably (rotated) provided at the tip of an engagement arm 45 projecting from the upper end of the trunk arm 44 toward the bathtub 2 side. When the rail 20 is in the retracted position, the engagement roller 43 is arranged above the _second axis L2, further above the center of gravity g41 of the interlocking arm ₄₁ , and on the bathtub 2 side of the center of gravity _g41 . (Predetermined location 2p side). Preferably, when the rail 20 is in the retracted position, the engaging roller 43 is close to and faces the predetermined portion 2p.

As shown in FIG. 5, when the bathtub is a tiltable bathtub 2A, the engaging roller 43 when the rail 20 moves from the stored position to the deployed position abuts ( engagement) to roll on the deployment permitting plate 2e.
As shown in FIG. 9, when the bathtub is a bathtub 2B that does not support tilting, when the rails 20 are about to be unfolded, the engagement rollers 43 can be engaged with the frame grips 2d at the predetermined locations 2p. is.

As shown in FIG. 3, a cushioning material 48 made of rubber or foamed resin is provided on the side surface of the locking arm portion 46 on the bathtub 2 side. As shown in FIG. 9, the cushioning material 48 is brought into contact with the corner portion of the frame 2c when the engagement roller 43 is engaged with the frame grip 2d.

As shown in FIG. 3, the engaging arm portion 45 is provided with a small piece-like upper stopper 53 . A lower stopper 54 is provided on the side surface of the regulation arm portion 47 facing the bathtub 2 . The lower stopper 54 is made of a cushioning material such as rubber or foamed resin.

As shown in FIG. 3 , when the rail 20 is in the retracted position, the upper stopper 53 abuts against the upper surface of the unfolding shaft portion 32 . Due to this contact, the interlocking arm 41 is prevented from rotating in the forward direction (the direction in which the locking roller 43 moves toward the predetermined location 2p, counterclockwise in FIG. 3). In addition, the lower stopper 54 abuts against the surface of the beam member 13 of the pedestal 11 opposite to the bathtub. This contact prevents the interlocking arm 41 from rotating in the opposite direction (the direction in which the locking roller 43 moves away from the predetermined point 2p, clockwise in FIG. 3). Therefore, when the rail 20 is in the retracted position, the interlocking arm 41 is constrained by the restricting mechanism 50 so as not to rotate in both forward and reverse directions. As a result, the trunk arm portion 44 is held in a substantially upright posture, and the engagement roller 43 is held at a position facing the predetermined portion 2p in close proximity.

The expansion shaft portion 32 and the beam member 13 constitute a restricting mechanism 50 that restricts the movement of the interlocking arm 41 when the rail 20 is in the retracted position.
The deployment shaft portion 32 is provided as forward direction restricting means 51 that restricts forward rotation of the interlocking arm 41 .
The beam 13 is provided as a reverse direction restricting means 52 that restricts reverse rotation of the interlocking arm 41 .

The bathing assistance system S is used as follows when assisting the person requiring assistance A in bathing.
As shown in FIG. 1 , the person requiring care A is seated on the chair unit 3 c of the shower carrier 3 for bathing assistance, and the person requiring care A is transported to the bathroom 1 .
In the bathroom 1, the operation of unfolding the rail 20 of the rail unit device 10 for bathing assistance is performed. Along with this, the connecting arm 31 is rotated, and the interlocking arm 41 is rotated in conjunction therewith.

As shown in FIG. 5, when the rail 20 is slightly moved from the stored position in the deployment direction, the rotational movement of the connecting arm 31 about the _first axis L1 causes the connecting shaft portion 42 to move to the opposite side of the bathtub 2. (right in FIG. 5). Along with this, the lower end stopper 54 of the interlocking arm 41 is displaced away from the reverse direction regulating means 52 to the opposite side of the bathtub 2 (to the right in FIG. 5). Therefore, the restriction mechanism 50 allows the interlocking arm 41 to rotate when the rail 20 is deployed. The contact between the upper stopper 53 and the deployment shaft portion 32 is maintained. Therefore, the trunk arm portion 44 is inclined toward the bathtub 2 side toward the upper end portion. Due to this inclination, the center of gravity g41 of the interlocking arm ₄₁ is reliably positioned closer to the bathtub 2 and above the _second axis L2 than the _second axis L2. As a result, a rotational moment due to its own weight is applied to the interlocking arm 41 so that the engagement roller 43 is directed toward the bathtub 2 side, that is, toward the predetermined location 2p. As a result, the engaging roller 43 can be reliably engaged with the deployment permitting means or deployment preventing means at the predetermined portion 2p.

Specifically, as shown in FIG. 5, when the bathtub 2A is of a tiltable size, when the rails 20 are expanded slightly, the engaging rollers 43 hit the expansion permitting plate 2e due to the slight inclination of the interlocking arms 41. . In other words, the deployment permitting plate 2e prevents the engaging roller 43 from engaging with the frame grip 2d (deployment preventing means) at the predetermined portion 2p. As a result, interlocking between the connecting mechanism 30 and the interlocking arm 41 is permitted, and thus the unfolding operation of the rail 20 is permitted.

Thereafter, as the rail 20 is deployed, the interlocking arm 41 is lifted and the engagement roller 43 rolls upward on the deployment permitting plate 2e. At this time, the upper stopper 53 moves upward from the deployment shaft portion 32 . Further, as shown in FIGS. 6 and 7, the engagement roller 43 rolls on the side surface of the frame 2c above the deployment permitting plate 2e and wraps around the corner of the frame 2c to the upper surface of the frame 2c. Thus, as shown in FIG. 7, the rails 20 can be deployed above the bathtub 2A.

As shown in FIG. 1, the rail 3b of the shower carry 3 is connected in a straight line to the developed rail 20. As shown in FIG. Next, as shown in FIG. 2, the chair unit 3c is moved from the rail 3b onto the rail 20 and further onto the bathtub 2A. Subsequently, the chair unit 3c is lowered by the lift mechanism 3g of the chair unit 3c. In this way, the person requiring assistance A can enter the bathtub 2 together with the chair unit 3c and take a bath.
As shown by the solid line in FIG. 2, the chair unit 3c is tilted by the tilting mechanism 3d as needed. Since the bathtub 2A is of a tiltable size, even if the chair unit 3c is tilted, the footrest 3f does not interfere with the bathtub 2A, and the person A requiring care is not injured unexpectedly.
After that, the person requiring assistance is taken out of the bathtub 2 and transferred to the carriage 3a of the shower carrier 3 for bathing assistance by the reverse procedure.

On the other hand, when the bathtub 2B is of a non-tilting size (FIG. 8), when the rails 20 are to be deployed from the stored position to the deployed position, as shown in FIG. 2d is fitted and engaged. In addition, the cushioning material 48 is brought into contact with the corner portion of the frame 2c. This prevents interlocking between the connecting mechanism 30 and the interlocking arm 41 . As a result, the deployment operation of the rails 20 is blocked, so that the rails 20 cannot be deployed any further. As a result, it becomes physically impossible to move the chair unit 3 c onto the bathtub 2 . Therefore, the caregiver can surely recognize that the tilting mechanism 3d of the chair unit 3c cannot be used because the bathtub 2B is of a non-tilting size.

In short, the rail unit device 10 is provided with a function of determining whether or not the bathtub 2 has a tiltable size. Specifically, depending on whether or not the engaging roller 43 of the discriminating mechanism 40 is engaged with the deployment allowing means 2e or the deployment preventing means 2d, the interlocking between the linking mechanism 30 and the interlocking arm 41, and thus the rail 20 is deployed. Allowed or prevented. This can improve the safety of bathing assistance. As a caregiver, there is no need to determine in advance whether the bathtub 2 to be used is of a tiltable size or not, and the risk of safety being compromised due to neglect of determination can be eliminated.
By using a post-installed deployment permitting plate 2e as the deployment permitting means, it is possible to deal with bathtubs that have already been supplied to the market.
By using the structure (the frame grip 2d) that is originally present in the bathtub 2 as the deployment prevention means, it is not necessary to prepare a dedicated deployment prevention means. Further, safety can be ensured by disabling the shower carry 3 unless the deployment permitting plate 2e is attached.
By arranging the discriminating mechanism 40 and the deployment permitting plate 2e on the far side of the bathroom 1, it is possible to prevent the shower carry 3 from being a hindrance to bathroom users who do not need it. Moreover, it is possible to avoid spoiling the design of the bathroom.

The present invention is not limited to the above embodiments, and various forms can be adopted without departing from the scope of the invention.
For example, the deployment blocking means may be retrofitted to non-tilt size bathtubs. A structure originally present in the bathtub may be used as the deployment permitting means.
The connecting mechanism may be parallel links. The rail 20 may be adapted to move parallel to the pedestal 11 .
Even when the rail 20 is in the retracted position, the center of gravity g41 of the interlocking arm ₄₁ may be arranged closer to the bathtub ₂ than the second axis L2.
A rotational moment may be applied to the interlocking arm 41 by biasing means such as a spring or rubber so that the engaging roller 43 moves toward the predetermined portion 2p.
In the case of a bathtub 2B of a non-tilting size, the engagement between the engagement roller 43 and the frame grip 2d is manually released to unfold the rail 20, and the chair unit 3c is not tilted. Carry 3 may be used.

INDUSTRIAL APPLICABILITY The present invention is applicable, for example, to bathing assistance equipment in nursing homes.

A Person requiring assistance S Bathing assistance system L ₁ First axis L ₂ Second axis 1 Bathroom 1 s Space 2 Bathtub 2A Tilt-compatible bathtub 2B Non-tilt-compatible bathtub 2c Frame 2d Frame grip (deployment prevention means)
2e deployment permission plate (deployment permission means)
2p Predetermined portion 2w Side portion 3 Shower carrier for bathing assistance 3a Cart 3b Rail 3c Chair unit 3d Tilt mechanism 3f Footrest 3g Lift mechanism 10 Rail unit device for bathing assistance 11 Stand 12 Bracket 13 Beam 20 Rail 30 Connecting mechanism 31 Connecting arm 32 deployment shaft portion 40 discrimination mechanism 41 interlocking arm (interlocking portion)
42 connecting shaft portion 43 engaging roller (engaging portion)
44 trunk arm portion 45 engagement arm portion 46 locking arm portion 47 regulation arm portion 48 cushioning material 50 regulation mechanism 51 forward direction regulation means 52 reverse direction regulation means 53 upper stopper 54 lower stopper

Claims (6)

A rail unit device that guideably supports a chair unit for bathing assistance,
a pedestal;
a rail mounted on the pedestal;
a connecting mechanism for movably connecting the rails to the pedestal between an accommodation position accommodated in the pedestal and a deployed position above the bathtub;
a discrimination mechanism that discriminates whether or not the size of the bathtub corresponds to the tilt of the chair unit;
wherein the discriminating mechanism includes an interlocking portion that interlocks with the movement of the connecting mechanism accompanying the unfolding operation of the rail, and an engaging portion that is provided in the interlocking portion, and is provided at a predetermined location of the bathtub A rail unit device for bathing assistance, characterized in that the interlocking and thus the deployment operation are permitted or prevented depending on whether or not the deployment permitting means or the deployment blocking means is engaged with the engaging portion. The interlocking and thus the deployment operation is blocked by the deployment blocking means being engaged with the engaging portion, or the deployment permitting means prevents the deployment blocking means and the engaging portion from engaging with each other. 2. The rail unit device for bathing assistance according to claim 1, wherein the interlocking and thus the unfolding motion is permitted by the rail unit device for bathing assistance. The deployment prevention means is a groove-shaped frame grip along the lower edge of the frame of the bathtub,
When the engaging portion includes an engaging roller that can be engaged with the stile grip and the stile grip is provided with a deployment permitting plate as the deployment permitting means, the engagement roller is adapted to the deployment. 3. The bathing assistance rail unit device according to claim 2, wherein the bathing assistance rail unit device is capable of rolling on the tolerance plate and riding on the frame. The connection mechanism includes a connection arm that spans the rail and the mount and is rotatably connected to the mount around a first axis parallel to the extending direction of the rail,
The interlocking portion includes an interlocking arm rotatably connected to the connecting arm about a second axis parallel to the first axis, and the interlocking arm is provided with the engaging portion. A bathing assistance rail unit device according to any one of claims 1 to 3. a restriction mechanism that restricts the interlocking arm so that it cannot rotate when the rail is in the housed position, and permits rotation of the interlocking arm when the rail is deployed from the housed position toward the deployed position. The rail unit device for bathing assistance according to claim 4, characterized in that: 5. A rotational moment is applied to the interlocking arm in a direction in which the engaging portion moves toward the predetermined position when the rail is deployed from the stored position toward the deployed position. 6. The rail unit device for bathing assistance according to 5.

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