JP2013192758A - Bathtub with handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathtub with handrail which is capable of preventing a hand of a bathing person from slipping when the bathing person tries to push his or her upper half body upward through the use of a handrail and further reducing a burden of the bathing person.SOLUTION: In a bathtub with handrail, opposite internal wall surfaces 4a and 4b are provided with movement aid handrails 10 for supporting a bathing person trying to stand up from a sitting posture and further having flat pressed surfaces 10a to which downward pressures are applied by palms of hands of the bathing person trying to push his or her upper body upward. When the bathing person presses the pressed surfaces 10a of a pair of handrails 10 arranged on the opposite internal wall surfaces 4a and 4b, the pressed surfaces 10a of the pair of handrails 10 are inclined downward inside the bathtub so that the bathing person can apply pressing forces to the pressed surfaces 10a with his or her arms close to the sides of the body.

Description

  The present invention relates to a bathtub with a handrail.

2. Description of the Related Art Conventionally, there is known a bathtub in which a handrail is attached to each of the opposing inner wall surfaces in order to assist a bather in getting up from a sitting posture (for example, Patent Document 1). And the thing of the type by which the upper surface was formed substantially horizontal is known as the handrail provided in the bathtub.

FIG. 7 is a diagram showing a state where a bather stands up by pushing up his / her upper body upward using this type of handrail. As shown in this figure, the bather M puts his left and right hands on the upper surfaces of a pair of handrails 11 attached at the same height relative to the opposing inner walls of the bathtub 1, and is perpendicular to the upper surface. The upper body is pushed up by applying a force (P in FIG. 7) to.

JP 2000-166793 A

However, when the bather M pushes up the upper body using the handrail 11, the bather himself applies the force perpendicular to the upper surface of the handrail 11, so that he / she tries to stand the lower arm A <b> 2 substantially perpendicular to the upper surface. Overhangs the elbow and eventually opens the sides. When the armpits are opened, the angle α between the upper arm A1 and the torso becomes larger than when the armpits are tightened, and the elbow that is the center of rotation of the upper arm A1 and the lower arm A2 is further away from the torso. Therefore, the force around the shoulder required to push up the upper body cannot be efficiently transmitted, and the burden on the bather M when pushing up the upper body is increased. Therefore, in order to reduce the burden on the bather M, it is desirable to cause the bather M to apply a force to the upper surface of the handrail 11 with the sides tightened.

However, when force is applied to the upper surface of the handrail 11 with the sides tightened, as shown in FIG. 8, the elbow is closer to the torso than when the sides are opened, and the upper surfaces of the lower arm A2 and the handrail 11 Since the angle β formed by the normal line becomes larger than when the side is opened, the force applied to the handrail 11 easily acts in a direction parallel to the upper surface of the handrail 11. Therefore, when the bather M pushes up the upper body, the hand easily slips on the upper surface of the handrail 11, and the bather may be injured.

The present invention has been made to solve the above problems, and when a bather pushes his / her upper body up using a handrail, the bather's hand is prevented from slipping and the burden on the bather is reduced. It aims at providing the bathtub with a handrail which can be done.

The bathtub with a handrail according to the present invention assists the operation when the bather stands up from the sitting posture, and the pressed surface portion is a plane on which a pressing force is applied downward by the bather's palm when the bather pushes up his / her upper body. When the bather presses the pressed surface portion of the pair of handrails provided on each of the opposing inner wall surfaces in the bathtub with the handrail provided on the inner wall surfaces of the bathtub facing the operation assisting handrail, The pressed surface portions of the pair of handrails are respectively inclined downward in the bathtub so that the person can apply a pressing force to the pressed surface portion with the sides tightened.

When the pressed surface part of the pair of handrails is inclined downward inside the bathtub, in order to apply a force perpendicular to the pressed surface part, the bather brings the elbow closer to the torso and puts the force downward on the opposite side of the torso. Both arms must be placed so that can be added. Usually, when a bather pushes up the upper body of his / her body, a force is applied to the pressed surface portion in a direction perpendicular to the pressed surface portion so as to apply as much force as possible to the pressed surface portion. By inclining each of them inward and downward of the bathtub, when the bather pushes up the upper body, the bather can naturally bring the elbow closer to the trunk and tighten the sides. Thus, when the bather pushes up the upper body, the force applied to the arm can be effectively applied as a force for lifting the upper body. Further, since the bather applies a force perpendicular to the pressed surface portion, the force applied by the bather can be prevented from acting in a direction parallel to the pressed surface portion. Therefore, the present invention can prevent the bather's hand from slipping when the bather pushes up the upper body, and can reduce the burden on the bather.

In the present invention, it is preferable that the handrail includes a gripping portion that is gripped by the bather when the bather stands up. The gripping portion has a pressed surface portion, and is below the pressed surface portion in a cross-sectional view. A finger-hanging portion protruding in an acute angle shape in the normal direction to the side is provided.

In this invention comprised in this way, when a bather grasps the holding part which has a to-be-pressed surface part, he can put a finger on a finger-hanging part. In particular, in the present invention, this finger-hanging portion protrudes at an acute angle in the direction in which the pressed surface portion is pressed by the bather in a cross-sectional view of the handrail, so that the fingertip is compared with the case where it protrudes at an obtuse angle. With this, you can pinch the finger grip firmly. Accordingly, since the bather's hand can be more firmly fixed to the grip portion, it is possible to prevent the slipping of the hand more surely, and this makes it easier to maintain the side tightened state. It is possible to reduce the burden on the bather more reliably.

  According to the bathtub with a handrail of the present invention, it is possible to prevent the bather's hand from slipping and to reduce the burden on the bather when the bather pushes his / her upper body up with the handrail.

The whole perspective view of the bathtub with a handrail concerning the embodiment of the present invention. The schematic sectional drawing of the bathtub with a handrail cut along the XX line of FIG. The top view of the bathtub with a handrail in embodiment of this invention. The figure showing a mode when a bather grasped the handrail in embodiment of this invention. The figure showing a mode when a bather pushes up the upper body of self using the bathtub with a handrail in embodiment of this invention. The figure showing the cross-sectional shape of other embodiment of the handrail in this invention. The figure showing a mode when a bather pushes up the upper body of a self using the conventional handrail in the state which opened the side. The figure showing a mode when a bather pushes up his upper body using the conventional handrail in the state which tightened the side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall perspective view of a bathtub with a handrail according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the bathtub with a handrail cut along line XX in FIG. FIG. 3 is a plan view of the bathtub with a handrail in the present embodiment.

As shown in FIGS. 1 to 3, the bathtub 2 with a handrail of the present embodiment includes an inner tank part 4, a rim part 6, an outer tank part 8, and a handrail 10.

The handrail 10 is for assisting the bather when he / she stands up from the sitting posture, and as shown in FIG. 4, the shape of the cross section perpendicular to the longitudinal direction of the handrail 10 has rounded corners. It is an equilateral triangle. And this handrail 10 is comprised so that all may become the same cross-sectional shape along the longitudinal direction.

Each of the handrails 10 is attached to each of the long side walls (4a and 4b) of the inner tub portion 4 facing the long side in the bathtub 2 with a handrail having a rectangular shape in plan view. More specifically, the handrail 10 is attached to each of the long side walls 4a and 4b by screwing screws or the like into the handrail 10 via the leg members 12 from the back side of the long side walls 4a and 4b. In the present embodiment, the handrail 10 can be gripped by all the portions where the leg members 12 are not provided in the longitudinal direction, and the grippable portion corresponds to the gripping portion of the present invention.

In addition, in this embodiment, since the handrail 10 is attached so that one side surface thereof is parallel to the inner side surface of the attachment side long side wall, the leg member 12 may be a rectangular parallelepiped and has a complicated shape. Therefore, the manufacturing cost of the leg member 12 can be kept low.

Moreover, since the long side wall 4a, 4b is formed so that it may become perpendicular | vertical with respect to a horizontal surface, and the cross-sectional shape of the handrail 10 is a substantially equilateral triangle, it is attached to the long side wall 4a, 4b. One side surface 10a of the handrail 10 is tilted by 30 degrees with respect to the horizontal plane as shown in FIG. That is, one side surface 10 a of the pair of handrails 10 is inclined to the lower side inside the inner tank part 4. The pair of handrails 10 are attached to the long side walls 4a and 4b of the inner tank portion 4 so as to have the same height. Further, as shown in FIG. 3, the pair of handrails 10 are attached to positions that are symmetrical with respect to the center line C in the short direction of the inner tank portion 4.

As shown in FIGS. 2 and 4, the pair of handrails 10 attached in this way constitutes a pressed surface portion in which one side surface 10 a directed upward is pressed by the palm of the bather, and the inner tank portion 4. One side surface 10b directed to the bottom surface 14 and one side surface 10c directed to the side surface of the inner tub portion 4 form a sandwiched portion sandwiched between the thumb and other fingers when the bather grasps the handrail 10, and these In the vicinity of the portion where the side surfaces intersect, a force (Pa, Pb in FIG. 4) is applied to the refracted fingertip when the handrail 10 is gripped, thereby constituting a finger hook portion 10d sandwiched between the fingertips.

Next, how to apply a force to the handrail 10 of the bather when the bather pushes up the upper body in the rising operation of the bather of the present embodiment will be described. FIG. 5 is a diagram showing a bather pushing up his / her upper body.

When the bather M pushes up the upper body, he or she can naturally apply a force perpendicularly to the pressed surface portion 10a in an attempt to apply a large force to the pressed surface portion 10a inclined inward and downward of the inner tank portion 4. Arrange the arm to the correct position. In order to apply a force perpendicular to the pressed surface portion 10a, the arm must be arranged so that the lower arm A2 is substantially perpendicular to the pressed surface 10a by bringing the elbow closer to the torso. The angle α formed by the body and the upper arm A1 is naturally reduced and the sides are tightened.

In this state, the bather M applies a force to the pressed surface 10a in order to push up the upper body of the bather M. When pushing up the upper body, the side of the bather M is hard to open, and the force applied to the arm at this time effectively acts as a force for raising the upper body. As a result, the bather M can easily push up the upper body with a small burden. In addition, since the bather M can apply a force perpendicular to the pressed surface 10a with the sides tightened, the applied force is not dispersed in a direction parallel to the pressed surface portion 10a, and the palm is It is possible to prevent sliding on the pressed surface portion 10a.

Moreover, in this embodiment, a bather puts a finger on the finger-hanging part 10d of the handrail 10 and the hand-holding part 10d is pinched by applying force to the fingertip, whereby the hand can be fixed to the handrail 10 more reliably. Therefore, it is possible to prevent the hand from slipping and rotating around the central axis S of the handrail 10.

Furthermore, as shown in FIG. 2, in this embodiment, when the bathtub 2 with a handrail is viewed from above, the entire area of the handrail 10 is configured to include the pressed surface portion 10a. When placing a hand, the palm of the hand can be placed on the pressed surface portion 10a. Therefore, when the bather pushes up the upper body, the bather is naturally in a state where his / her side is tightened, so that the burden on the bather can be more reliably reduced.

In the embodiment of the present invention, the cross-sectional shape of the handrail 10 is a regular triangle with rounded corners, but the present invention is not limited to this, for example, as shown in FIG. Of course, other polygons such as a pentagonal shape may be used. In the example shown in FIG. 6, for example, the upper surface 30a of the handrail 30 can be a pressed surface portion, and the protruding portion protruding at an acute angle downward in the normal line direction of the pressed surface portion 30a can be the finger hook portion. .

2 ... Bathtub with handrail 4 ... Inner tank part 4a, 4b ... Long side wall 6 ... Rim part 8 ... Outer tank part 10 ... Handrail 10a ... Pressed surface part (one side surface of handrail 10)
10b, 10c: One side surface 10d of the handrail 10 ... Finger hook 12 ... Leg member 14 ... Bottom surface

Claims (2)

An assisting handrail having a pressed surface portion which is a flat surface to which a bathing person pushes up his / her upper body and a pressing force is applied downward by the palm of the bather when the bather pushes up his upper body. In the bathtub with a handrail provided on each inner wall facing the bathtub,
When the bather presses the pressed surface portion of the pair of handrails provided on each of the opposing inner wall surfaces, the bather can apply a pressing force to the pressed surface portion in a state where the bather is tightened on the side. Furthermore, the to-be-pressed surface part which said pair of handrail has inclined the bathtub inner side downward, respectively, The bathtub with a handrail characterized by the above-mentioned. The handrail includes a gripping part that is gripped by the bather when the bather stands up,
The grip portion includes the pressed surface portion, and is provided with a finger hook portion that protrudes at an acute angle in a normal direction toward the lower side of the pressed surface portion in a cross-sectional view. The bathtub with a handrail as described in.

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