JP3300300B2 - Handrail for bathtub - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail for a bathtub, and more particularly, to a handrail removably attached to an upper end portion of a thick side wall plate of the bathtub.

[0002]

2. Description of the Related Art As in 1993, a law on the development and spread of welfare equipment, the "Welfare Equipment Law," was enacted.

[0003] Handrails for bathrooms have also been popularized as one of inexpensive and convenient welfare tools, and are useful for bathing for the physically handicapped, the elderly, and lower grade children (hereinafter referred to as bathers).

[0004] Of these handrails for bathrooms, when the handrail is directly fixed to the bathroom wall, especially when an amateur fixes it to an existing wall, depending on the wall material, there is a case where there is no sufficient fixing force, so there is an unexpected There is a risk of accidental peeling of the flakes.

[0005] Therefore, handrails for bathtubs, which are easy to check the strength (tested with the apron surface deformation test of the bathtub according to JIS) and can be easily attached even by an amateur, have come into general use.

Various proposals have been made for such handrails for bathtubs. For example, Japanese Utility Model Laid-Open Publication No. 3-39482,
JP-A-3-60590, JP-A-4-4630, JP-A-4-43189, JP-A-4-4889
No., JP-A-4-54290, JP-A-6-4849
Various proposals have been made in Japanese Patent Laid-Open No. 0, JP-A-11-47016, and the like.

The present applicant has also proposed a handrail for a bathtub shown in FIG.

This will be described. This bathtub railing 1
Reference numeral 00 denotes a downward U-shaped straddling member 2 and a thick side wall plate (also referred to as an apron) 3 of the straddling member 2 (see FIG. 1).
Press plate 5 with handle 104 in the bathtub to fix to
And a vertical U-shaped gripper 6 for a bather standing outside the bathtub of the straddling member 2. The pressing plate 5 is formed of a stainless steel plate, and an elastic protective plate 7 is provided on one surface thereof. One end of the screw rod 108 is connected to the center of the other surface via a pin coupling mechanism.

The screw rod 108 is screwed to a polyethylene nut rotatably fitted to one foot plate 2a of the straddling member 2.

The handle 104 is externally fitted to the other end of the screw rod 108 via the nut.

The handle 104 has a threaded rod 1
The other end of 08 forms a cavity that can be advanced and retracted in the axial direction.

Therefore, when the handle 104 is rotated, the nut is integrally rotated, so that the other end of the screw rod 108 advances and retreats from the hollow portion. The position does not change.

Therefore, the handrail 100 for a bathtub is convenient for a bather who can easily get in and out of the bathtub with a little support when entering and leaving the bathtub.
Since the position of the handle 104 in the bathtub does not change, the amount of protrusion can be learned by custom, and the bath lid can be opened with the handrail 100 attached.

By the way, when providing such a handrail 100 for a bathtub, the following problems were expected.

[0015] That is, 1) a bathtub using a handrail has a large or small capacity, and there is a case where the handrail is obstructed when the handrail is attached, or a case where there is no trouble even if the handrail is attached. Yes,

2) The user of the handrail desirably eases the bather who needs a little support, but the degree of the need for the support varies considerably. There is a difference in the force applied to the

3) Since handrails are generally installed by bathers or their families, there is an individual difference in the tightening force of the screws.

4) There are various ways of gripping the handrail, and the directions of force are different, so that the tightening force may be insufficient.

5) The bathtub is also made of FRP, stainless steel,
There are various types such as unit baths, cypress baths, hollows, tiles, etc., and various problems such as diversification in the thickness and shape of the bathtub apron have been expected.

For this reason, the handling specifications for the bathtub handrail 100 include meticulous handling instructions and precautions to prevent the above-mentioned problems.
For example, in order to prevent the screw from being loosened due to the depressed deformation of the thick side wall plate due to excessive tightening of the screw rod 108, the nut to which the screw rod 108 is screwed is made of polyethylene, and if the screw is excessively tightened, the screw thread will be crushed. In order to prevent excessive tightening, a configuration has been adopted.

[0021]

However, if the nut is made of synthetic resin and the screw rod is also made of synthetic resin, the screw rod becomes long, and the handle 104 protrudes greatly into the bathtub, or if the nut is excessively tightened. A new problem has been identified in that too much attention is paid to insufficient surface pressure on the screw surface.

Therefore, the present invention is intended to simplify as much as possible the contents of the handling explanation for preventing the occurrence of the aforementioned problems on the occasion of solving such newly found problems. Also aimed at solving these problems.

[0023]

In order to achieve the above object, the gist of the present invention is as follows. 1) A downwardly U-shaped straddling member and the straddling member are straddled on a thick side wall plate of a bathtub. After the installation, the pressing plate with a handle to be fixed, and a vertical gripper for a bather provided on the straddling member, the distal end of the screw rod is connected to the pressing plate, the proximal end of the screw rod In the handrail for a bathtub in which the handle is provided and the screw bar is screwed to a nut provided on a U-shaped foot plate in the bathtub, a straddling member having a large space between the U-shaped foot plates, and A thick wall reinforcing plate for using a screw rod having a small screw advance / retreat stroke to reduce the amount of protrusion of the handle into the bathtub is detachable between the pressing plate and the thick side wall plate. The handrails for the bathtub are fixed to correspond to the thick side walls of various thicknesses It is in the tub handrail, characterized in, and 2) a wall thickness correction plate according to claim 1, and having a thickness-thin more, in tubs handrail that allow selection from these.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments shown in the accompanying drawings. 1 is a cross-sectional view of a main part of an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of the embodiment of FIG.
FIG. 1 is a front view of the parts shown in FIG. 1 and the parts common to FIG. 4 showing the conventional example are omitted.

A handrail 1 for a bathtub according to an embodiment of the present invention.
Is, for example, 45 mm with respect to the thickness of the thick side wall plate 3 of the bathtub.
From 80mm to 80mm, or from 80mm to 11mm
Like the range that can be adjusted up to 5 mm, the adjustment range is expanded to about 35 mm to cope with the diversification of the apron thickness, and the stroke range of the screw rod 8 is restricted to be reduced to facilitate the screwing operation. Thus, the tightening force is to be made uniform.

The handrail 1 for a bathtub includes a downwardly U-shaped straddling member 2 made of sheet metal such as stainless steel and a straddling member 2.
Pressing plate 5 with handle 4 provided inside the bathtub for detachably fixing to the thick side wall plate 3 of the bathtub
And a vertical U-shaped gripper (grip) 6 (see FIG. 4) for the bather standing upright outside the bathtub of the straddling member 2.

The gripping portion 6 is made of foamed PP as a core material and is formed by two-layer molding in which the gripping portion is covered with an elastomer, so that slipping is prevented and safety is secured.

The pressing plate 5 and the handle 4 are connected as follows.

The tip side of the screw rod 8 with respect to the pressing plate 5 is
The pressing plate 5 is connected to the non-pressing side of the pressing plate 5 so that the pressing plate 5 can swing slightly upward, and the base portion of the screw rod 8 is closer to the base end than the pressing portion.
The handle 4 is fitted over the flanged nut 9.

The nut 9 with the flange is connected to the straddling member 2.
The flanged nut 9 and the handle 4 are integrated by a plurality of screw pins 10 screwed in. The nut 9 with flange is also rotated when the handle 4 is rotated. It rotates together.

A cylindrical hollow portion 11 is formed at the center of the handle 4, and the flanged nut 9 opposite the flange side is fitted therein, and the proximal end of the threaded rod 8 is screwed back and forth. -Make sure that you can

Therefore, when the handle 4 is rotated forward and backward, the nut with flange 9 is rotated integrally, the screw rod 8 is advanced and retreated, and the pressing plate 5 presses or releases the thick side wall plate 3. .

The tip end of the screw rod 8 and the pressing plate 5 are
The following structure is adopted in order to cause the pressing plate 5 to swing slightly upward.

A pair of circular pins 12, 12 are integrally formed in the left and right radial directions on the distal end side of the screw rod 8, and a semicircular portion 13 is formed on the distal end surface in a side view. At the center of the anti-pressing side, there is formed a concave portion in which the circular pin 12 can be press-fitted and fixed and the semicircular arc portion 13 can smoothly contact.

Accordingly, the pressing plate 5 is provided with a pair of circular pins 12.
, So that the pressing surface of the pressing plate 5 can also be brought into close contact with the thick side wall plate 3, which is tentatively inclined, so that a pressing force perpendicular to the apron surface is given, and thus the pressing force is increased. .

Here, the handle 4, the pressing plate 5, the threaded rod 8, and the nut 9 with the flange are particularly improved as follows.

The handle 4 is an injection-molded product made of foamed PP (made of synthetic resin), and has a disk-shaped grip portion 13 and a small cylindrical base portion 14. The handle 4 is formed on the outer periphery of the disk of the disk-shaped grip portion 13. Four small hemispherical potches 15, 15,... Are integrally formed.

The diameter of the disk-shaped grip portion 13 is about 65 to 70 mmφ, which is a size convenient for gripping an eagle by an adult.
The outer diameter of the small hemispherical potch 15 is about 75 mmφ, and the thickness of the disc is about 30 mm, so that even a user with a weak fingertip can easily grasp the eagle, and thereby obtain the necessary pressing force. . The horizontal length of the handle 4, that is, the amount of protrusion of the handle 4 in the bathtub is suppressed to about 50 mm.

The pressing plate 5 is an injection-molded product made of PP (made of synthetic resin) and is formed in a horizontally long rectangular plate shape of about 105 mm × 135 mm, and a pair of horizontally parallel upper and lower edges on the pressing surface. The groove 16 is formed, and a wall thickness correction plate 17 described later can be detachably mounted in the groove 16, and through holes 18 are provided at four corners inside the groove 16.

Therefore, as shown in FIG. 1, a rubber plate 20 having hollow feet 19 which are pushed into the through holes 18 and fitted.
Can be attached to the pressing surface of the pressing plate 5.

A shallow rubber plate fitting concave portion 21 is formed to prevent the rubber plate 20 from being reduced in thickness due to settling of the rubber and to prevent the rubber plate 20 from shifting, thereby preventing the rubber plate 20 from protruding when pressed. , Keeping the initial elasticity.

The rubber plate 20 protrudes a number of vertical and horizontal ribs on the side of the thick side wall plate 3 to ensure the pressing.

The screw rod 8 is made of free-cutting brass (metal).
Unlike the above-mentioned conventional screw rod of a synthetic resin such as POM, it can be configured to have a small diameter, and together with the free-cutting brass (metal) of the flanged nut 9, the overall diameter can be reduced. As a result, the diameter of the small cylindrical base 14 of the handle 4 is reduced, which is convenient for grasping the eagle.

In order to reduce the amount of protrusion of the handle 4 in the bathtub, a metal screw rod 8 capable of increasing the screw surface pressure is adopted, the axial length thereof is shortened, and the screw rod 8 is advanced and retracted. -Limit the work, and thus the handle 4
The axial length of the hollow portion 11 (the stroke 22
mm), and as a result, the protrusion amount of the handle 4 is reduced.

A washer 22 is provided at the base end of the screw rod 8 to serve as a screw stopper for the screw rod 8. Of course, the stopper for retreating the screw rod 8 is an end face of the screw rod 8.

When a stopper collar (not shown) is loosely fitted to the screw rod 8, the screwing stroke is further restricted.
In addition, since the stroke of the screw rod 8 is restricted and only the central part of the screw rod 8 is used, the flanged nut 9 is used.
Therefore, the number of screw threads engaged with the screw can always be optimized, the surface pressure of the screw surface can be secured, and the pressing force of the pressing plate 5 and the loosening of the screw can be prevented.

Of course, if the screw rod 8 is excessively tightened, a high-quality rubber plate 20 is used to enable the use of permanent deformation of the rubber to make it possible to set the rubber rod 20 together. It can be avoided by the elasticity with the correction plate 23,
In addition, since the strength of the apron surface of the bathtub by the deformation test has been known in advance, and the handle 4 is gripped by an eagle, the apron surface is not deformed by excessive tightening of the hand of an adult male. I have to.

As described above, the nut with flange 9 is made of a metal such as free-cutting brass, and the flange portion is formed by forging, and the screw portion is formed by shaving. Sandwich the foot plate 2a with the base 14;
Easy to assemble.

A washer for reducing rotational friction between the flange portion and the foot 2a, that is, a plastic washer 24 is attached to the flange portion to reduce unnecessary frictional force at the time of tightening.

With the improved handle 4, pressing plate 5, screw rod 8 and flanged nut 9 as described above, the protrusion of the handle 4 in the bathtub is about 2 /
3 and the handle 4 has a small cylindrical base 1
4 can be formed, it becomes possible to grasp the eagle and the palm jointly, it is also convenient for the elderly, it is easy to exert the turning power of the hand, and furthermore, the shortage of the screw rod 8 is prevented,
In addition, the loosening of the screw can be prevented by securing the meshing screw thread, and the above problems can be solved as much as possible.

As described above, in the handrail 1 for a bathtub according to the present embodiment, the straddling member 2 restricts the screw rod 8 from advancing and retreating while expanding the interval between the foot plates as much as possible. In order to reduce the amount of protrusion of the handle 4 and to optimize the number of threads engaged with the threaded rod 8 and the nut 9 with a flange, the thickness of the thick side wall plate 3 of the bathtub and the pressing force at the time of installation are reduced. The following wall thickness correction plate 17 is used for uniform pressure distribution.

2 and 3, the wall thickness correcting plate 17 is an injection-molded product made of PP (made of synthetic resin), and is formed of a horizontally long rectangular plate having substantially the same dimensions as the pressing plate 5.

The wall thickness correcting plate 17 has a pair of fitting projections 25, which are horizontally parallel to the upper and lower edges of the pressing plate 5 side.
25 is provided so as to be fitted into the concave groove 16 of the pressing plate 5 and the concave grooves 26 of the other wall thickness correcting plate 17 for mounting.

Four through holes 27 for the correction plate are provided at the four corners inside the fitting projection 25, and the through holes 27 for the correction plate are formed in the same position and size as the through holes 18 provided in the pressing plate 5. The foot 19 of the rubber plate 20 can be pushed and fitted.

By changing the thickness of the wall thickness correction plate 17, a plurality of types such as a thick (20 mm) wall thickness correction plate 17A and a thin (10 mm) wall thickness correction plate 17B are prepared. A wide wall thickness correction plate (not shown) which is enlarged in the direction is prepared to cope with the diversification of the thickness of the thick side wall plate 3 of the bathtub or to disperse the pressing force.

On both sides of the wall thickness correction plate 17, the ears 2
Projections 8, 28 are provided, which are gripped to facilitate separation and facilitate handling of the wall thickness correction plate 17. Note that FIG.
In the figure, 31 is a grid-like rib.

In the bathtub handrail 1, a step 29 is generally formed on the outer surface of the apron in order to enlarge the upper edge surface of the thick side wall plate 3 of the bathtub. The level difference correction plate 23 is provided in an overlapping manner.

The step difference correction plate 23 is a rectangular plate made of polyethylene and having a thickness of 5 mm, and has a double-sided tape attached to one surface thereof. Therefore, the step correction plate 30 is stacked to a predetermined thickness and adhered directly below the step 29 of the thick side wall plate 3 to make the outer surface of the apron flush.

Since an adhesive made of double-sided tape is applied to the step correction plate 23, the foot plate 2b of the bathtub handrail 1 is always fixed via the elastic protection plate 30. Therefore, even if a force in the direction orthogonal to the pressing of the bathtub handrail 1 (a force in the direction orthogonal to the paper surface of FIG. 1) acts, this force can be coped with and prevents the bathtub handrail 1 from coming off unexpectedly. ing.

[0060]

According to the present invention, the amount of protrusion of the handle protruding into the bathtub is reduced, so that it does not hinder bathing. Of course, in order to reduce the amount of protrusion, the screw rod is advanced and retracted. Since the stroke is small and the axial length of the hollow portion of the handle is shortened, the handle can be made compact.

Further, since the interval between the U-shaped foot plates is increased, a general-purpose handrail for a bathtub can be provided in accordance with the thickness of the diversified thick side wall plate (apron).

The wall thickness compensating plate can absorb the difference between the small stroke of the threaded rod and the large stroke of the U-shaped foot plate.

As a result, it is possible to easily obtain a predetermined pressing force even for a person with a weak fingertip by reducing the rotation of the handle, and to prevent accidental detachment due to loosening of the screw.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the embodiment of FIG. 1;

FIG. 3 is a front view of the parts shown in FIG. 1;

FIG. 4 is a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Handrail for bathtub, 2 ... Straddling member, 3 ... Thick side wall plate, 4
... Handle, 5 ... Pressing plate, 6 ... Grip part, 8 ... Screw rod, 9
... Flanged nut, 11 ... Cavity, 17 ... Wall thickness correction plate

──────────────────────────────────────────────────続 き Continuation of the front page (72) Takashi Katayama 4-627-2 Kajiwara, Takatsuki-shi, Osaka Prefecture Aron Kasei Co., Ltd. Takatsuki Works (56) References Japanese Utility Model Application Hei 6-82988 (JP, U) (58 ) Surveyed field (Int.Cl. ⁷ , DB name) E04F 11/18 A47K 3/02-4/00 F16B 2/00-2/26

Claims (2)

(57) [Claims] A downward U-shaped straddling member, a pressing plate with a handle for fixing the straddling member after straddling the thick side wall plate of a bathtub, and a bather provided on the straddling member A vertical grip portion, comprising connecting the distal end of a screw rod to the pressing plate, providing the handle on the base end side of the screw rod, and providing the screw rod on a U-shaped foot plate in the bathtub. In a handrail for a bathtub screwed to a nut, a straddling member having a large space between the U-shaped foot plates and a screw advance / retreat stroke for reducing the amount of protrusion of the handle in the bathtub are reduced. By using a screw-bar, a wall-thickness reinforcing plate for each of the detachable interposition between the pressing plate and the thick-walled side plate, the handrail for the bathtub can be made to correspond to the thick-walled side plate of various thicknesses. A handrail for bathtubs, characterized by being fixedly attached. 2. A handrail for a bathtub, wherein the wall thickness compensating plate of claim 1 is made of a plurality of types of thick and thin, and can be selected from these.