JP2018140028A - Bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathtub in which a pillow part can be moved vertically freely, and which can further improve design properties and a relaxation effect.SOLUTION: A bathtub comprises: a bottom surface part; a side surface part for surrounding the bottom surface part, extending upward from the bottom surface part and having a backrest part; a support part provided on the backrest part; a shaft part extending in a vertical direction, in which only a partial range in the vertical range of the shaft part is supported to the support part so as to move freely in the vertical direction, thereby moving along the backrest part over a prescribed range of the vertical direction; and a pillow part which is attached to the shaft part, and in a state of covering the shaft part and the support part, moving in the vertical direction over the prescribed range along the backrest part with the shaft part.SELECTED DRAWING: Figure 1

Description

  Aspects of the invention generally relate to a bathtub.

  A bathtub provided with a pillow part that can move up and down along the backrest part is known (for example, Patent Document 1). The bather adjusts the height of the pillow portion according to height, etc., and supports the head on the pillow portion while placing the back against the backrest portion. Thereby, a bather can be bathed in a more weak state, and the relaxation effect at the time of bathing can be heightened.

  In such a bathtub, for example, a plate member provided with a plurality of concavities and convexities arranged vertically is fixed to the backrest part, or a plurality of concavities and convexities arranged vertically are formed directly on the surface of the backrest part. The pillow part engages with any one of the irregularities. Thereby, the height of the pillow part is adjusted by the position of the unevenness to be engaged, the pillow part can be moved up and down, and the height of the pillow part can be fixed.

  Since the unevenness is provided corresponding to the movable range of the pillow part, it exists in a wide range from top to bottom. Therefore, a part of the unevenness is always exposed to at least one of the upper part and the lower part of the pillow part, and the design of the bathtub is deteriorated. Further, depending on the height of the pillow part, there are irregularities in the backrest part below the pillow part, so that irregularities may come into contact with the back, neck, etc. during bathing, which may impair the relaxation effect.

JP 2005-279034 A

  This invention is made | formed based on recognition of this subject, and it aims at providing the bathtub which improved the design property and the relaxation effect more, enabling the pillow part to move up and down.

  The first invention surrounds the bottom surface portion, the bottom surface portion, extends upward from the bottom surface portion, has a side portion having a backrest portion, a support portion provided in the backrest portion, and extends in the vertical direction. The shaft portion that moves along the backrest portion over the predetermined range in the vertical direction by being supported by the support portion so as to be movable in the vertical direction only in a part of the vertical range, and A pillow portion that is attached to the shaft portion and moves in the vertical direction over the predetermined range along the backrest portion together with the shaft portion in a state of covering the shaft portion and the support portion. It is the bathtub characterized by this.

  According to this bathtub, since the support portion supports only a part of the shaft portion in the vertical direction so as to be movable in the vertical direction, the support portion can be reduced in size. The pillow portion always covers both the shaft portion and the support portion regardless of the position in the vertical direction. Thereby, while being able to improve the design property of a bathtub, it can suppress that a axial part, a support part, etc. contact a bather, and can improve a relaxation effect more. Therefore, it is possible to provide a bathtub with improved design and relaxation effect while allowing the pillow portion to move up and down.

  According to a second invention, in the first invention, the left and right inner surfaces or the left and right outer surfaces of the shaft portion are formed in a planar shape, and the support portion is formed in a planar shape on the left and right inner surfaces or left and right surfaces. By pressing the outer surface of the tub, the shaft portion is slidably supported.

  According to this bathtub, since the support portion supports the shaft portion slidably by pressing the left and right inner surfaces or the left and right outer surfaces formed in a planar shape in the shaft portion, the pillow portion is moved up and down. When the height is adjusted by moving in the direction, continuous adjustment is possible instead of multistage adjustment. Accordingly, the bather can easily finely adjust the height of the pillow portion according to the height and the like, so that the pillow portion can be arranged at a height more suitable for the height and the relaxation effect can be further improved.

  In a third aspect based on the second aspect, the support portion has a protruding portion protruding from the backrest portion, and the shaft portion is cylindrical so that at least a part of the protruding portion can be accommodated. And the left and right end portions of the receiving portion to be stored in the cylindrical portion in the projecting portion have elasticity, the cylindrical portion having an opening extending in the vertical direction on the backrest portion side. The support portion is a bathtub characterized in that the shaft portion is slidably supported by pressing the left and right inner surfaces of the cylindrical portion with the left and right end portions of the receiving portion.

  According to this bathtub, the shaft portion can be slidably supported by the support portion with a simple structure. Further, since at least a part of the protruding portion is accommodated in the internal space of the shaft portion, the support portion can be further downsized, and the shaft portion and the support portion can be more reliably covered with the pillow portion.

  A fourth invention is the bathtub according to the third invention, wherein the width of the opening is smaller than the width of the receiving portion.

  According to this bathtub, since the width of the opening is smaller than the width of the receiving portion, the force that would cause the tube portion to come off from the receiving portion when the bather is adjusting the height of the pillow portion. Even if it is unexpectedly added to the pillow part, the cylinder part is caught by the receiving part, so that the shaft part can be made difficult to come off from the support part, and the height of the pillow part can be adjusted more easily. .

  5th invention is further equipped with the prescription | regulation part which prescribes | regulates the overflow level of the water stored in the space enclosed by the said bottom face part and the said side part in any one invention of 1st-4th, A support part is a bathtub characterized by being arranged above the overflow water level.

  According to this bathtub, it can suppress that a support part is immersed in the hot water in a bathtub. Thereby, the stain | pollution | contamination and deterioration of a support part are suppressed, and a shaft part can be supported by a support part so that a movement is appropriately possible over a long period of time.

  According to a sixth invention, in any one of the first to fifth inventions, the support portion supports the shaft portion so as to be movable in the vertical direction, and also in a direction perpendicular to the backrest portion. It is a bathtub characterized by supporting the axis part so that movement is possible.

  According to this bathtub, for example, when extending the outer peripheral part of the pillow part to the vicinity of the backrest part and covering the shaft part and the support part more reliably, the backrest part is bent concavely in the vertical direction, etc. Moreover, when the pillow part is moved in the vertical direction, the outer peripheral part of the pillow part can be prevented from coming into contact with the backrest part. While improving the flexibility of bathtub design, such as enabling the shape of a curved backrest, the outer periphery of the pillow comes into contact with the backrest, obstructing the movement of the pillow, or scratching the backrest It can be suppressed.

  According to the aspect of the present invention, there is provided a bathtub in which the pillow portion can be moved up and down and the design and relaxation effect are further improved.

It is a perspective view showing a bathtub concerning an embodiment typically. It is a perspective view showing a bathtub concerning an embodiment typically. It is a top view showing typically a part of bathtub concerning an embodiment. It is sectional drawing which represents typically a part of bathtub concerning embodiment. It is sectional drawing which expands and partially represents some bathtubs which concern on embodiment. It is sectional drawing which represents typically a part of bathtub concerning embodiment. It is sectional drawing which expands and represents typically the part of the pillow part of the bathtub which concerns on embodiment. Fig.8 (a)-FIG.8 (c) are sectional drawings which expand and typically represent the part of the pillow part of the bathtub which concerns on embodiment. Fig.9 (a) and FIG.9 (b) are sectional drawings which expand and typically represent the part of the pillow part of the bathtub which concerns on embodiment. It is a perspective view showing a part of bathtub concerning an embodiment typically. FIG. 11A and FIG. 11B are perspective views schematically showing a part of the bathtub according to the embodiment. It is a perspective view showing typically the water discharging part of the bathtub concerning an embodiment. It is sectional drawing which represents typically the water discharging part of the bathtub which concerns on embodiment. It is a front view which represents typically the water discharging part of the bathtub which concerns on embodiment. It is a perspective view which represents typically an example of the use condition of the bathtub concerning an embodiment. Fig.16 (a)-FIG.16 (l) are explanatory drawings which represent typically an example of the procedure of the bathing of the bathtub which concerns on embodiment. It is a top view which represents a part of reference bathtub typically. FIG. 18A to FIG. 18C are reference views schematically showing the movement of the shaft portion. It is a top view which represents typically the modification of the bathtub which concerns on embodiment. It is sectional drawing which represents typically the modification of the bathtub which concerns on embodiment. It is sectional drawing which represents typically the modification of the bathtub which concerns on embodiment. Drawing 22 (a) and Drawing 22 (b) are top views showing typically the modification of the support part of the bathtub concerning an embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
1 and 2 are perspective views schematically showing a bathtub according to the embodiment.
As illustrated in FIGS. 1 and 2, the bathtub 10 includes a bathtub body 12. The bathtub body 12 includes a bottom surface portion 14 and a side surface portion 16. The side surface portion 16 surrounds the bottom surface portion 14 and extends upward from the bottom surface portion 14. More specifically, the side surface portion 16 surrounds the outer edge of the bottom surface portion 14. Thereby, in the bathtub 10, hot water can be stored in the space SP inside the bathtub main body 12 surrounded by the bottom face portion 14 and the side face portion 16, and bathing can be performed in the bathtub main body 12.

  The side surface portion 16 includes a first inner side surface 21 and a second inner side surface 22. The first inner surface 21 has a backrest 30 that supports the back of the bather. The second inner surface 22 is disposed at a position facing the first inner surface 21. That is, the second inner surface 22 is an inner surface on the leg side of the bather whose back is in contact with the backrest 30. The bather can take a bath with the back in contact with the backrest 30.

  Here, in the present specification, when viewed from the bather whose back is in contact with the backrest 30, the upper part is “upper”, the lower part is “lower”, the front is “front”, and the rear is “rear”. The right side is “right side” and the left side is “left side”.

  The backrest 30 has an inclination angle of 45 ° or less with respect to the horizontal direction, for example. Thereby, in the bathtub 10, the upper body can be brought down and can be bathed so that it may become supine. Hereinafter, in the present specification, a state where the upper body is tilted to take a bath so as to be on its back is referred to as “sleeping bath”. The bathtub 10 is not limited to a bathtub that allows sleeping, but may be a bathtub that bathes in a posture that sits in the bathtub body 12.

  The shape of the bathtub body 12 viewed from above is an elliptical shape that is long in the front-rear direction. The shape of the bathtub body 12 viewed from above is not limited to an elliptical shape, and may be a rectangular shape, a square shape, a circular shape, or the like. The shape of the bathtub body 12 may be an arbitrary shape that enables sleeping.

  The bathtub 10 may be a single bathtub used for an artificial bath or the like, or may be a bathtub used for a unit bath (system bath). The installation method of the bathtub 10 may be any installation method such as a stationary type, an embedded type, and a semi-embedded type.

  The bottom surface portion 14 includes a first bottom surface 41, a second bottom surface 42, and a support portion 44. The first bottom surface 41 is provided between the first inner side surface 21 and the second inner side surface 22. The second bottom surface 42 is provided between the first bottom surface 41 and the second inner side surface 22. The support portion 44 is provided between the first bottom surface 41 and the second bottom surface 42.

  The first bottom surface 41 is a surface for placing the buttocks of the bather in the sleeping state. The support portion 44 is provided in front of the user whose back is in contact with the backrest portion 30 rather than the backrest portion 30 and the first bottom surface 41, and suppresses the forward movement of the buttocks of the bather in the sleeping posture. In order to do so, it is formed to protrude upward from the first bottom surface 41. That is, the support part 44 supports the bather's buttocks in the sleeping posture. The second bottom surface 42 is a placement portion that is provided in front of the support portion 44 and is provided at a position higher than the first bottom surface 41 in order to place the bather's legs.

  Thus, the 2nd bottom face 42 is provided in the position higher than the 1st bottom face 41, and the position of a bather's leg is made higher than the position of a buttocks. Thereby, the posture of the bather in the sleeping state can be brought close to the posture (hereinafter referred to as “neutral posture”) that places the least burden on the body due to the structure of the human musculoskeletal system. The bather in the sleeping state can be weakened and the relaxation effect can be further enhanced.

  The bathtub body 12 further includes a pillow portion 50, a drain port 51, an overflow port 52, injection ports 53 and 54, and a suction port 55.

  The pillow part 50 is provided in the backrest part 30 of the side part 16 so that it can move to the up-down direction and the front-back direction over a predetermined range. The pillow part 50 has the head mounting surface 50a which can mount the bather's back head in the state which faced the upper side. In the bathtub 10, the position of the head placement surface 50 a can be adjusted according to the height of the bather by moving the pillow part 50 up and down and back and forth along the inclination of the backrest part 30. A portion below the head placement surface 50a of the pillow portion 50 is curved into a convex curved surface (see FIG. 7). The curved surface portion below the head placement surface 50a is formed in a curved shape that easily fits the base of the bather's neck. Thereby, it can make it easy to support a bather's head more appropriately.

  The pillow part 50 has the water outlet 50b. The water outlet 50b is provided below the head placement surface 50a. The water discharge port 50b discharges hot water toward the neck of the bather in a state where the back of the head is placed on the head placement surface 50a. Thereby, for example, the neck of a bather in a sleeping state can be warmed. Moreover, a part of the hot water discharged from the water outlet 50b hits the bather's neck and also hits the bather's shoulder and chest. Thereby, for example, the upper body of the bather in the sleeping state can be more easily warmed.

  The water outlet 50b is formed in a slit shape long in the left-right direction. The water outlet 50b discharges a strip-shaped water flow extending in the left-right direction. The length of the water outlet 50b in the left-right direction is, for example, about 20 cm to 30 cm. The length of the water outlet 50b in the left-right direction is longer than the average width of a human neck, for example. Thereby, while being able to apply hot water appropriately to the neck part of the bather in a sleeping state, it can make it easy to apply hot water to a bather's shoulder, a chest, etc.

  The drain port 51 is provided on the first bottom surface 41 of the bottom surface portion 14. That is, the drain outlet 51 is provided at the lowest position in the space SP inside the bathtub body 12. For example, a drain plug that opens and closes the drain port 51 is provided in the drain port 51. By plugging the drain outlet 51 with the drain plug, hot water can be stored in the bathtub body 12. And the hot water accumulated in the bathtub main body 12 can be discharged | emitted outside by opening the drain port 51. FIG.

  The overflow port 52 is provided in the upper part of the second inner surface 22. The position of the overflow port 52 is not limited to the second inner side surface 22 and may be an arbitrary position on the side surface portion 16. The overflow port 52 communicates with the overflow line 60 (see FIG. 6), and when the hot water level in the bathtub body 12 (in the space SP) reaches the height of the overflow port 52, the overflow water is supplied to the overflow line 52. 60. The overflow pipe 60 allows hot water flowing from the overflow port 52 to flow to an external drain pipe or the like. Thereby, it can suppress that hot water overflows on the outer side of the bathtub main body 12. FIG.

  As described above, the lower end of the overflow port 52 functions as a defining portion that defines the overflow level of hot water stored in the space surrounded by the bottom surface portion 14 and the side surface portion 16. The defining portion is not limited to the lower end of the overflow port 52, and may be, for example, the rim of the bathtub main body 12 (the upper end of the bathtub main body 12).

  The injection port 53 is provided in the lower part of the backrest 30. The injection port 53 injects hot water toward the waist of a bather in a sleeping state. Thereby, a bather's waist etc. can be stimulated and the relaxation effect can be heightened more. In this example, the injection port 53 injects hot and cold water aiming at the position of the spinal column standing muscle which is the antigravity muscle of the bather. Moreover, in this example, the bathtub main body 12 has the two injection ports 53 located in a line with right and left. The number of injection ports 53 is not limited to two, and may be one or three or more.

  The injection port 54 is provided on the second bottom surface 42. In this example, the bathtub main body 12 has a total of six injection ports 54, two on the left and right and three on the front and rear. Each injection port 54 is arranged so as to have a square shape that spreads toward the front. Each injection port 54 injects bubbles toward a bather's leg in a sleeping state. Thereby, a bather's leg etc. can be stimulated and the relaxation effect can be heightened more. The number of the injection ports 54 is not limited to six and may be any number.

  The suction port 55 is provided below the overflow port 52 on the second inner surface 22. The position of the suction port 55 may be an arbitrary position below the overflow port 52. The suction port 55 sucks in hot water stored in the bathtub body 12. The bathtub 10 sucks hot water stored in the bathtub main body 12 from the suction port 55, discharges the sucked hot water from the water discharge port 50 b of the pillow part 50, and jets it from the injection port 53. That is, the bathtub 10 discharges hot water from the water outlet 50 b and jets hot water from the injection port 53 by circulating hot water in the bathtub body 12.

FIG. 3 is a plan view schematically showing a part of the bathtub according to the embodiment.
FIG. 4 is a cross-sectional view schematically showing a part of the bathtub according to the embodiment.
4 corresponds to a cross section taken along line A1-A2 of FIG.
As shown in FIGS. 3 and 4, the first inner side surface 21 further includes a right shoulder pad 31, a left shoulder pad 32, a right hand pad 33, a left hand pad 34, a right groove part 35, and a left groove part 36. Have.

  The right shoulder rest 31 and the left shoulder rest 32 are provided on the left and right sides of the upper portion of the backrest 30. The right shoulder pad 31 and the left shoulder pad 32 support the shoulder of the bather in the sleeping state. The right shoulder rest 31 and the left shoulder rest 32 are formed integrally with the backrest 30, for example. Therefore, the right shoulder rest 31 and the left shoulder rest 32 are flush with the backrest 30. The right shoulder rest 31 and the left shoulder rest 32 are flush with the backrest 30 in the left-right direction. Here, “level” is, for example, a state in which the difference in height between the highest point and the lowest point of two surfaces is 10 mm or less in a cross section in a plane parallel to the horizontal direction and the vertical direction. . The right shoulder rest 31 and the left shoulder rest 32 may protrude forward from the backrest 30. The right shoulder pad 31 and the left shoulder pad 32 may have any shape that can support the shoulder of the bather in the sleeping state.

  The right hand holding part 33 and the left hand holding part 34 are provided on the left and right sides of the lower part of the backrest part 30. The right hand holding part 33 and the left hand holding part 34 can place the bather's hand in the sleeping state.

  As shown in FIG. 4, the left hand support 34 is inclined downward toward the front. The shape of the right hand pad 33 is symmetrical to the shape of the left hand pad 34. Therefore, the right hand holding part 33 is also inclined downward toward the front in the same manner as the left hand holding part 34.

  The right groove portion 35 and the left groove portion 36 are provided on both left and right sides of the central portion in the vertical direction of the backrest portion 30. The right side groove part 35 and the left side groove part 36 are recessed more than the backrest part 30 toward the rear side of the bather whose back is in contact with the backrest part 30. The right groove part 35 and the left groove part 36 are recessed from the backrest part 30 in the direction orthogonal to the surface of the backrest part 30, for example. In other words, the right groove portion 35 and the left groove portion 36 are recessed on the back side from the backrest portion 30.

  Thereby, when the bather presses the right hand support part 33 and the left hand support part 34 and raises his / her upper body by his / her hand, the elbow of the bather is placed on the back side of the backrest part 30. Allows to be located. In other words, the right side groove part 35 and the left side groove part 36 can accommodate the elbow of the bather when the bather raises the upper body by pressing the right hand support part 33 and the left hand support part 34 by hand.

  As shown in FIG. 4, the lower portion of the left groove portion 36 is inclined downward toward the front and is continuous with the left hand holding portion 34. That is, the left hand rest 34 and the left groove 36 form an inclined surface that is continuously inclined downward toward the front. The shape of the right groove 35 is symmetrical to the shape of the left groove 36. The lower portion of the right groove portion 35 is inclined downward toward the front and is continuous with the right hand holding portion 33, similarly to the left groove portion 36.

  The inclination angle of the lower part of the right groove part 35 and the lower part of the left groove part 36 with respect to the horizontal direction is larger than the inclination angle of the right hand holding part 33 and the left hand holding part 34 with respect to the horizontal direction. The right hand holding part 33, the left hand holding part 34, the right groove part 35, and the left groove part 36 have, for example, a concave curved shape that is recessed on the back side. Therefore, the inclination angle of the right groove portion 35 is larger than the inclination angle of the right hand holding portion 33. The inclination angle of the left groove 36 is larger than the inclination angle of the left hand support 34.

  The inclination angle of the right hand holding part 33 and the left hand holding part 34 with respect to the horizontal direction is, for example, 10 ° or more. The inclination angle of the lower part of the right groove part 35 and the lower part of the left groove part 36 with respect to the horizontal direction is, for example, 10 ° or more. The right hand pad 33, the left hand pad 34, the right groove 35, and the left groove 36 are not limited to curved surfaces, but may be linear inclined surfaces.

  The depth DN from the backrest 30 of the right groove 35 and the left groove 36 is, for example, not less than 2 cm and not more than 20 cm. As a result, when raising the upper body, the elbow of the bather can be properly stored, and the right groove 35 and the left groove 36 become excessively deep so that the right groove 35 and the left groove 36 can be hand-held. It can suppress becoming difficult to stick an elbow. For example, it is possible to make the upper body of the bather easier to wake up.

  As shown in FIG. 4, the first bottom surface 41 is substantially horizontal in the front-rear direction. In other words, the first bottom surface 41 is provided between the backrest portion 30 and the support portion 44, is connected to the lower end of the support portion 44, and is a horizontal portion that is horizontal in the front-rear direction. Here, “horizontal” means, for example, a state in which the angle of the line segment connecting the highest point and the lowest point in the plane is 10 ° or less.

  The support part 44 is inclined upward toward the front. The inclination angle of the support portion 44 with respect to the horizontal direction is larger than the inclination angle of the backrest portion 30 with respect to the horizontal direction at the same height. As described above, the inclination angle of the backrest 30 with respect to the horizontal direction is 45 ° or less. On the other hand, the inclination angle of the support portion 44 with respect to the horizontal direction is, for example, larger than 45 ° and smaller than 90 °.

  The lower end 30a of the backrest part 30 is connected to the first bottom surface 41 which is a horizontal part. The inclination angle of the backrest 30 with respect to the horizontal direction is the horizontal direction of the support 44 at the same height from the position 30b at the same height as the upper end 44a of the support 44 to the first bottom surface 41 (lower end 30a). It is smaller than the inclination angle with respect to.

  In this example, the first bottom surface 41 is also horizontal in the left-right direction (see FIG. 3). The first bottom surface 41 is substantially a horizontal plane. The length L2 in the front-rear direction of both side portions of the first bottom surface 41 is longer than the length L1 in the front-rear direction of the center portion of the first bottom surface 41. The first bottom surface 41 may have, for example, an inclination of about several degrees that descends toward the drain port 51. The first bottom surface 41 may have a so-called drainage gradient.

  In this example, the 2nd bottom 42 which is a mounting part for mounting a bather's leg is also substantially horizontal. The second bottom surface 42 is a horizontal surface that is substantially horizontal in the front-rear direction and the left-right direction. In the bottom surface portion 14, the front side of the support portion 44 is horizontal throughout.

FIG. 5 is a cross-sectional view schematically illustrating an enlarged part of the bathtub according to the embodiment.
As shown in FIG. 5, the backrest 30 includes a first region R1 and a second region R2. The second region R2 is continuously provided above the first region R1. Moreover, the backrest part 30 has the bending line FL. The bending line FL is provided at the boundary portion between the first region R1 and the second region R2. The second region R2 is bent with respect to the first region R1. The bent line FL is a bent portion so that the inclination angle changes in the backrest portion 30 and extends linearly in the left-right direction. The bending line FL is provided at a position higher than the upper end 44a of the support portion 44, for example. Here, “bending” is, for example, a state in which two surfaces having different inclination angles are connected via a round or chamfering with a radius of 2 cm or less.

  The inclination angle θ2 with respect to the horizontal direction of the second region R2 is larger than the inclination angle θ1 with respect to the horizontal direction of the first region R1. The inclination angle θ1 of the first region R1 is, for example, not less than 10 ° and not more than 45 °. The inclination angle θ2 of the second region R2 is, for example, an angle obtained by adding an angle of 5 ° to 30 ° to the angle of the inclination angle θ1.

  The first region R1 and the second region R2 may have an inclined surface shape or a curved surface shape. Moreover, the backrest part 30 does not necessarily need to be bent. For example, the backrest 30 may have a concave curved surface that is recessed downward. Thereby, the inclination angle of the upper part of the backrest part 30 can be made larger than the inclination angle of the lower part of the backrest part 30 as in the case of bending. The backrest 30 may have any shape with different inclination angles between the lower part and the upper part. For example, in a cross section parallel to the front-rear direction and the vertical direction, the inclination angle with respect to the horizontal direction of the line segment connecting the lower end and the upper end of the first region R1 is the horizontal direction of the line segment connecting the lower end and the upper end of the second region R2. What is necessary is just to be different from the inclination angle with respect to.

  The backrest 30 has a steep slope 38. The steeply inclined portion 38 is provided between the lower center of the backrest portion 30 and the first bottom surface 41. The inclination angle of the steeply inclined portion 38 with respect to the horizontal direction is larger than the inclination angle of the lower center of the backrest portion 30 with respect to the horizontal direction. The inclination angle θ1 of the first region R1 is, for example, the inclination angle of the portion above the steeply inclined portion 38 in the first region R1.

  The pillow part 50 is provided in 2nd area | region R2. The pillow part 50 moves up and down and back and forth within a predetermined range MA1 in the second region R2. In other words, the pillow part 50 moves in the inclination direction of the backrest part 30 within the predetermined range MA1. In FIG. 5, the pillow part 50 represents the state which exists in the highest position. The distance ML that the pillow part 50 moves along the backrest part 30 is, for example, 155 mm or more.

  The bending line FL is provided below the lower end of the pillow portion 50 at the lowest position with a predetermined interval DT. The predetermined interval DT is, for example, 100 mm or more. More specifically, the predetermined interval DT is 100 mm or more in the length along the backrest 30. More preferably, the predetermined interval DT is 140 mm or more and 200 mm or less in the length along the backrest 30.

  In addition, as shown in FIG. 5, the second region R <b> 2 has an inclination angle larger than the inclination angle of the first region R <b> 1, so that the first region R <b> 1 gives a bathing feeling to the bather, and the second region R <b> 2. R2 can bend the bather's back (spine). Accordingly, the bather presses the body against the backrest portion 30 and the support portion 44 by using the “spring force F of the back to straighten the back” that works unconsciously on the bather with the back bent. You can gain power.

  The support part 44 supports the bather's buttocks in the sleeping state, and applies a force f1 opposite to the direction in which the body of the bather slides along the inclination of the backrest 30 to the bather's body (buttock). Further, the pillow part 50 supports a lower BBH (base part of the head and neck) of the back of the bathing person in the sleeping state, and is opposite to the direction in which the body of the bather slides down along the inclination of the backrest part 30. The force f2 is applied to the body (head) of the bather. That is, the lower part BBH of the back of the head is caught on the pillow part 50 in the sliding direction.

  In this way, while supporting the bather's buttocks with the support portion 44, the bather's back is appropriately bent, and the spring force F of the back that works unconsciously by the bather is used to take the bather's backrest 30. Press on. Thereby, a bather can be weakened appropriately and it can be made to sleep in a more relaxed state. In addition, by hooking the lower part BBH of the back of the bather on the pillow part 50, the bather can be made more weak and sleep in a more relaxed state.

  The shape of the pillow part 50 may be an arbitrary shape capable of placing (supporting) at least the lower BBH of the occipital region of the bather. The head placement surface 50a may be a surface having an arbitrary shape on which the lower BBH of the back head of the bather with the face facing upward can be placed. For example, in a state where the lower BBH of the bather's occipital region is placed on the pillow portion 50, the bather's occipital point MBP (the portion of the occipital region protruding to the rearmost side) is in contact with the backrest 30. Also good.

  The bending line FL is preferably arranged at a position where the back of the bather is bent as close to the bather's waist as possible. Thereby, compared with the case where a bather's back is bent in the position close | similar to a bather's chest, for example, it can suppress making a bather feel the difficulty of breathing accompanying the bending of a back. You can make the bather sleep more relaxed.

FIG. 6 is a cross-sectional view schematically showing a part of the bathtub according to the embodiment.
6 corresponds to a cross section taken along line B1-B2 of FIG.
As shown in FIG. 6, the lower end of the overflow port 52, which is a defining part that defines the overflow level of the water in the bathtub body 12, is the head mounting surface 50 a in a state where the pillow part 50 is disposed at the lowest position. It is provided below the position H2 that is 120 mm higher than the position H1. More specifically, the position H1 is the position of the lower end of the head placement surface 50a in a state where the pillow part 50 is disposed at the lowest position.

  The 5% tile value of the length HL from the occipital region (occipital point MBP) to the mouth of an adult Asian woman who is relatively short worldwide is about 195 mm. More specifically, the length HL is the length from the occipital point MBP to the mouth in a direction perpendicular to the frontal plane (a plane that divides the human body into the ventral side and the dorsal side). In other words, it is the length in the front-rear direction (horizontal direction) from the human occipital point MBP to the mouth in an upright position facing the front. Taking into account the inclination of the sleeping bath and the state of pulling the chin, the length in the height direction from the head placement surface 50a to the mouth does not become smaller than about 120 mm. Accordingly, the overflow port 52 is provided below a position H2 that is 120 mm higher than the position H1 of the head placement surface 50a in a state where the pillow part 50 is disposed at the lowest position. Accordingly, even when a bather having a relatively small physique adds hot water to the bathtub main body 12 with the height of the pillow portion 50 at the lowest position, the water level of the hot water in the bathtub main body 12 is the mouth of the bather. It is possible to prevent the bather from feeling uncomfortable.

  For example, it is preferable to set the overflow water level OFL at the lower end (the defining portion) of the overflow port 52 between the position H1 and the position H2. Thereby, for example, when a bather having a relatively high height sleeps with the height of the pillow portion 50 at the highest position, the bather's shoulder and chest are prevented from excessively protruding from the water surface. be able to. Therefore, bathers of various physiques can be made to sleep comfortably.

  As illustrated in FIG. 6, the bathtub 10 further includes an overflow pipe 60, a pump 62, and circulation pipes 64 and 66.

  The overflow pipeline 60 is connected to the overflow port 52. Further, the overflow pipe 60 can be connected to a drain pipe 68 connected below the drain port 51. The overflow pipe 60 allows hot water flowing from the overflow port 52 to flow to the drain pipe 68.

  The pump 62 is connected to the suction port 55 via the circulation pipe 64 and is connected to the pillow part 50 and the injection port 53 via the circulation pipe 66. The pump 62 supplies hot water sucked from the suction port 55 to the pillow part 50 and the injection port 53. Thereby, hot water is discharged from the water outlet 50 b of the pillow part 50 and hot water is injected from the injection port 53 according to the drive of the pump 62. In other words, the pump 62 is a pump for circulating hot water in the space SP of the bathtub body 12. The circulation pipes 64 and 66 are connected to the pump 62 and pass hot water to be circulated.

  The pump 62 is provided, for example, in a space below the second bottom surface 42. In this way, by disposing the pump 62 at a position below the backrest 30 below the second bottom surface 42, it becomes difficult for the bather to hear the operation sound of the pump 62, and the relaxation effect is reduced by the operation sound of the pump 62. Can be suppressed. In addition, by disposing the pump 62 in the space below the second bottom surface 42, it is not necessary to reduce the length of the front, rear, left, and right inside the bathtub body 12, and the area within the bathtub body 12 can be secured.

  In this example, hot water is discharged from each of the water outlet 50 b and the injection port 53 of the pillow portion 50 by driving one pump 62. For example, by providing a three-way valve or the like at a branch portion between the water discharge port 50 b and the injection port 53, hot water may be selectively supplied to only one of the water discharge port 50 b and the injection port 53. Alternatively, hot water may be discharged from only one of the water discharge port 50 b and the injection port 53 by individually providing a pump for each of the water discharge port 50 b and the injection port 53.

FIG. 7 is a cross-sectional view schematically showing an enlarged portion of the pillow portion of the bathtub according to the embodiment.
As illustrated in FIG. 7, the bathtub 10 further includes a support portion 80, a shaft portion 82, and a water discharge portion 84. The bathtub 10 includes, for example, two support portions 80 arranged in the vertical direction and the front-rear direction. The support 80 is provided on the backrest 30 of the bathtub body 12. The support portion 80 is disposed above the overflow water level OFL defined by the overflow port 52 in the backrest portion 30 (see FIG. 6).

Fig.8 (a)-FIG.8 (c) are sectional drawings which expand and typically represent the part of the pillow part of the bathtub which concerns on embodiment.
FIG. 8A corresponds to a cross section taken along line C1-C2 of FIG.
FIG. 8B corresponds to a cross section taken along line D1-D2 of FIG.
As shown in FIG. 8A and FIG. 8B, the support portion 80 includes a protruding portion 80a, a receiving portion 80b, and a screw 80c. The protruding portion 80 a protrudes from the backrest portion 30. The protruding portion 80a protrudes in a direction perpendicular to the backrest portion 30, for example. The protrusion 80a has a substantially cylindrical shape. The protrusion 80a is attached to the bathtub body 12 via a screw 80c. That is, the support part 80 is screwed to the bathtub body 12. The attachment method of the support part 80 is not restricted to the above, The arbitrary methods which can be attached to the bathtub main body 12 may be sufficient. The shape of the protrusion 80a is not limited to a cylindrical shape, and may be any shape.

  The to-be-stored part 80b is attached to the upper part of the protrusion part 80a at predetermined intervals with the bathtub main body 12. As shown in FIG. The accommodated portion 80b protrudes at least in the left-right direction from the distal end side of the protrusion 80a. The shape of the storage portion 80b viewed from above is, for example, a circular shape. Therefore, in this example, the accommodated portion 80b protrudes in the left-right direction and the front-rear direction from the distal end side of the protruding portion 80a. The shape of the storage portion 80b may be any shape that protrudes at least in the left-right direction from the distal end side of the protrusion 80a.

  The left and right end portions of the protruding portion 80b have elasticity. For example, an elastic material such as rubber is used for the receiving portion 80b. In this case, substantially the entire receiving portion 80b has elasticity.

  The shaft portion 82 extends in the up-down direction and the front-rear direction, and is supported by the support portion 80 so as to be movable in the up-down direction only in a part of the up-down direction and the front-rear direction. It moves along the backrest 30 over MA2 (see FIG. 9). That is, the shaft portion 82 moves in the inclination direction of the backrest portion 30.

  The shaft portion 82 includes a cylindrical portion 82a and an opening portion 82b. The cylindrical portion 82a is provided in a cylindrical shape so that at least a part of the protruding portion 80a can be stored. The cylindrical portion 82a has a cylindrical shape that can store the receiving portion 80b of the support portion 80. In other words, the accommodated portion 80b is a portion that is accommodated in the cylindrical portion 82a of the protruding portion 80a. The cylinder part 82a is a square cylinder shape, for example. The shape of the cylindrical portion 82a may be any shape corresponding to the shape of the accommodated portion 80b.

  The opening part 82b is provided in the backrest part 30 side of the cylinder part 82a. The opening 82b extends in the up-down direction and the front-rear direction. In other words, the opening part 82b opens the cylinder part 82a downward. The opening portion 82b allows the protruding portion 80a to be inserted in a state where the cylindrical portion 82a stores the stored portion 80b. Thereby, the opening part 82b enables the cylinder part 82a to move along the backrest part 30 in the vertical direction and the front-rear direction.

  The lateral width (the width in the left-right direction) of the opening 82b is larger than the lateral width of the projecting portion 80a and smaller than the lateral width of the accommodated portion 80b. Accordingly, the accommodated portion 80b can be accommodated in the cylindrical portion 82a, and the projecting portion 80a can be inserted into the opening portion 82b. The to-be-stored part 80b accommodated in the cylinder part 82a engages with the cylinder part 82a in the left-right direction. Thereby, the movement to the left-right direction of the axial part 82 is controlled. Further, a part of the cylindrical portion 82 a enters between the accommodated portion 80 b and the backrest portion 30. Thereby, the movement of the shaft portion 82 in the direction perpendicular to the backrest portion 30 is restricted. That is, the shaft portion 82 is prevented from coming off from the support portion 80 in the direction perpendicular to the backrest portion 30. Therefore, the shaft part 82 can be moved only in the vertical direction and the front-rear direction (inclination direction of the backrest part 30).

  The left and right inner surfaces S1 and S2 of the cylindrical portion 82a (shaft portion 82) are formed in a planar shape. The support part 80 pushes the shaft part 82 in the vertical direction and the front-rear direction by pressing the left and right inner side surfaces S1, S2 formed in a planar shape of the cylindrical part 82a at the left and right end parts E1, E2 of the accommodated part 80b. Support slidable in the direction. The widths of the left and right inner side surfaces S1, S2 of the cylindrical portion 82a are slightly narrower than the widths of the left and right end portions E1, E2 of the accommodated portion 80b (diameter of the accommodated portion 80b). The cylinder part 82a accommodates the accommodating part 80b in the internal space, and slightly deforms the accommodating part 80b. As a result, the left and right inner side surfaces S1, S2 of the cylindrical portion 82a can be pressed by the left and right ends E1, E2 of the accommodated portion 80b.

  The length L11 in the direction perpendicular to the backrest 30 of the accommodated portion 80b is shorter than the length L12 in the direction perpendicular to the backrest 30 inside the cylindrical portion 82a. Accordingly, the shaft portion 82 moves in a direction perpendicular to the backrest portion 30 by the difference between the length L11 and the length L12 in a state where the accommodation portion 80b is accommodated in the cylindrical portion 82a. Can do. That is, the support portion 80 supports the shaft portion 82 so as to be movable in the vertical direction and the front-rear direction, and also supports the shaft portion 82 so as to be movable in a direction perpendicular to the backrest portion 30.

  In this example, two support portions 80 are provided side by side in the front-rear direction. The number of support portions 80 may be one, or may be three or more. The number of the support portions 80 may be any number that can support the shaft portion 82 so as to be movable. The shape of the support portion 80 and the shape of the shaft portion 82 are not limited to the above, and may be any shape that can move the shaft portion 82. For example, as shown in FIG. 8C, the left and right outer surfaces S3 and S4 of the shaft portion 82 are formed in a flat shape, and the left and right outer surfaces S3 and S4 formed in a flat shape are pressed, The shaft portion 82 may be slidably supported. That is, the shaft portion 82 may be supported so as to be slidable. In this case, the shaft portion 82 may be sandwiched by one support portion 80, or the shaft portion 82 may be sandwiched by a pair of support portions 80 as shown in FIG.

Fig.9 (a) and FIG.9 (b) are sectional drawings which expand and typically represent the part of the pillow part of the bathtub which concerns on embodiment.
As shown in FIG. 7, FIG. 9A and FIG. 9B, the pillow part 50 is attached to the shaft part 82. Thereby, the pillow part 50 is located in the up-down direction and the front-back direction along the inclination of the backrest part 30 between the highest position shown in FIG. 9A and the lowest position shown in FIG. Moving. Moreover, the pillow part 50 and the axial part 82 can be stopped in the arbitrary positions between the highest position and the lowest position by the frictional force which arises between each to-be-stored part 80b and the axial part 82. FIG.

  The support by which the shaft portion 82 can be moved by the support portion 80 is not limited to the configuration using the friction force. For example, the structure of the support part 80 is engaged with the shaft part 82 using a latch mechanism, a gear mechanism, or the like, and moves the shaft part 82 while changing the engaged state (engaged position) by applying a force. Thus, a configuration in which the shaft portion 82 is stopped at an arbitrary position between the highest position and the lowest position may be employed. As described above, the support portion 80 may be a member that movably supports the shaft portion 82 by engagement attachment.

  The water discharger 84 discharges water on the neck of the bather. The water discharger 84 is provided below the head placement surface 50 a of the pillow part 50. The water discharge portion 84 is attached to the shaft portion 82. Thereby, the water discharger 84 follows the movement of the pillow part 50. The water discharger 84 moves in the inclination direction of the backrest 30. That is, the water discharger 84 is provided so as to be movable up and down over the predetermined range MA3 along the backrest 30. The water discharger 84 is connected to the circulation pipe 66. Moreover, the water discharge part 84 is arrange | positioned adjacent to the water discharge port 50b of the pillow part 50. FIG. Thereby, the water discharge part 84 discharges the hot water supplied from the circulation piping 66 from the water discharge port 50b of the pillow part 50. FIG.

  The pillow portion 50 has a hollow dome shape, and covers the support portions 80, the shaft portion 82, and the water discharge portion 84 when attached to the shaft portion 82. The pillow part 50 moves in the vertical direction and the front-rear direction over a predetermined range MA1 along the backrest part 30 together with the shaft part 82 in a state of covering each support part 80, the shaft part 82, and the water discharge part 84.

  The pillow part 50 covers each support part 80, the axial part 82, and the water discharging part 84, for example in the front-back direction, the left-right direction, and an upper direction (direction perpendicular | vertical with respect to the backrest part 30). That is, the pillow part 50 suppresses that each support part 80, the axial part 82, and the water discharging part 84 will be visually recognized by the bather etc. Thereby, the beauty of the bathtub 10 can be improved.

FIG. 10 is a perspective view schematically showing a part of the bathtub according to the embodiment.
10, the state which looked at the pillow part 50, the axial part 82, and the water discharging part 84 from diagonally downward is represented typically.
As shown in FIG. 10, a pair of attachment members 50 c and 50 d for detachably attaching the pillow part 50 to the shaft part 82 are provided inside the hollow pillow part 50.

  The attachment members 50c and 50d are provided side by side in the vertical direction (front-rear direction). The attachment member 50 c is provided on the upper end side (rear end side) in the pillow part 50. The attachment member 50d is provided on the lower end side (front end side) in the pillow portion 50. The attachment members 50c and 50d are formed in a clip shape. The attachment members 50 c and 50 d restrict the movement of the pillow part 50 in the left-right direction with respect to the shaft part 82 by sandwiching both side surfaces of the shaft part 82. The mounting members 50c and 50d are configured so that the lower end (front end) and the upper end (rear end) of the shaft portion 82 are sandwiched between the mounting member 50c and the mounting member 50d. Restrict movement in the (front-rear direction). In other words, the shaft portion 82 is provided on the back side of the pillow portion 50 and has an elongated shape extending in the vertical direction within a range between the upper end and the lower end of the pillow portion.

  Thus, by sandwiching the shaft portion 82 between the mounting members 50c and 50d, the movement of the pillow portion 50 in the front-rear and left-right directions with respect to the shaft portion 82 is restricted, and the pillow portion 50 is attached to the shaft portion 82. The attachment method of the pillow part 50 to the shaft part 82 is not limited to the above, and any attachment method that can be detachably attached to the shaft part 82 may be used.

  The water discharger 84 has an elongated shape extending in the left-right direction. The length in the left-right direction of the water discharge portion 84 corresponds to the length in the left-right direction of the water discharge port 50 b of the pillow portion 50. The water discharge part 84 discharges the strip | belt-shaped water flow extended in the left-right direction via the water discharge port 50b.

FIG. 11A and FIG. 11B are perspective views schematically showing a part of the bathtub according to the embodiment.
FIG. 11A and FIG. 11B show a state where the pillow part 50 is removed from the shaft part 82. FIG. 11A shows a state where the shaft portion 82 is at the highest position, and FIG. 11B shows a state where the shaft portion 82 is at the lowest position.

  As illustrated in FIGS. 11A and 11B, the bathtub 10 further includes a pair of water supply portions 86 and 88 and a pair of supply pipes 90 and 92. Each water supply part 86 and 88 is provided in the backrest part 30. As shown in FIG. Each water supply part 86 and 88 is arranged side by side in the left-right direction so that the axial part 82 may be pinched | interposed. Each water supply part 86 and 88 is provided in the position covered with the pillow part 50 in the whole range of the movement range of the pillow part 50. As shown in FIG.

  Each water supply part 86 and 88 is provided so that the bathtub main body 12 may be penetrated, and is connected with the circulation piping 66 in the back surface side of the bathtub main body 12 (refer FIG. 7, FIG. 9). Therefore, as represented by the virtual line VL1 in FIGS. 11A and 11B, the position of the water supply unit 86 does not change even when the water discharge unit 84 is moved up and down. Similarly, as represented by the virtual line VL2, even when the water discharger 84 is moved up and down, the position of the water supply unit 88 does not change. The circulation pipe 66 is divided into two branches on the way, and is connected to the water supply units 86 and 88. The circulation pipe 66 supplies hot water supplied from the pump 62 to each of the water supply units 86 and 88.

  The supply pipes 90 and 92 connect the water discharge unit 84 and the water supply units 86 and 88, and supply hot water supplied from the water supply units 86 and 88 to the water discharge unit 84. Each of the supply pipes 90 and 92 has flexibility that changes its shape in accordance with the movement of the water discharger 84. Thereby, even when the water discharger 84 can be moved up and down, hot water can be appropriately supplied to the water discharger 84. For each supply pipe 90, 92, for example, a rubber tube or a metal flexible hose is used.

  The water discharger 84 has a horizontally long shape extending in the left-right direction, and has connecting portions 84a, 84b connected to the supply pipes 90, 92 at both ends in the left-right direction. The connecting portion 84a extends rightward from one end of the water discharging portion 84. The connection portion 84b extends leftward from the other end of the water discharge portion 84. Thus, each connection part 84a, 84b is extended in the left-right direction from the both ends of the left-right direction of the water discharging part 84. As shown in FIG.

  The supply piping 90 connects the water supply part 86 and the connection part 84a. The supply pipe 92 connects the water supply unit 88 and the connection unit 84b. Thereby, the hot water supplied from the circulation pipe 66 is supplied to the water discharge part 84 through the water supply parts 86 and 88 and the supply pipes 90 and 92.

  The connection portions 84a and 84b are not necessarily provided at both ends of the water discharge portion 84, and may be provided at least at one end in the left-right direction of the water discharge portion 84. When the water discharge part 84 has only one connection part, one water supply part and supply piping are sufficient.

  The pillow part 50 is provided on the front side of the backrest part 30 so that no load from the front acts on the supply pipes 90 and 92 regardless of the height of the water discharge part 84 within the predetermined range MA3. The supply pipes 90 and 92 are covered. That is, in this example, the pillow part 50 also functions as a cover that covers the supply pipes 90 and 92. Therefore, in this example, the pillow part 50 which is a cover moves up and down following the movement of the water discharge part 84.

  A cover that covers the supply pipes 90 and 92 may be provided separately from the pillow portion 50. The cover does not necessarily have a function as a pillow for supporting the bather's head. Further, the cover does not necessarily follow the movement of the water discharger 84. The cover can cover the supply pipes 90 and 92 so that the load from the front does not act on the supply pipes 90 and 92 regardless of the height of the water discharger 84 within the predetermined range MA3. Configuration may be sufficient.

FIG. 12 is a perspective view schematically illustrating a water discharge portion of the bathtub according to the embodiment.
FIG. 13 is a cross-sectional view schematically illustrating the water discharger of the bathtub according to the embodiment.
As shown in FIGS. 12 and 13, the water discharger 84 includes the housing 100, the current plate 102, the water flow path forming member 104, the packing 106, and the lid 108.

  The casing 100 has a substantially rectangular box shape with an upper opening. The connection portions 84 a and 84 b are provided at both ends of the housing unit 100. Hot and cold water supplied from the connection portions 84 a and 84 b is stored in the housing portion 100.

  The lid 108 is attached above the casing 100 and closes the opening above the casing 100. Further, the lid part 108 forms a gap in front of the casing part 100. Thereby, the housing | casing part 100 and the cover part 108 form the slit-shaped water outlet 84c extended in the left-right direction in front of the water discharging part 84. FIG. Hot water supplied from the connecting portions 84a and 84b is discharged forward from the water outlet 84c.

  The water discharge port 84c performs wide water discharge extending in the left-right direction. Here, the “wide water discharge” is, for example, a water discharge form in which the length of the water flow discharged from the water discharge port 84c in the left-right direction is longer than the length of the water flow discharged from the water discharge port 84c in the vertical direction. In other words, the length of the water outlet 84c in the left-right direction is longer than the length of the water outlet 84c in the vertical direction. The length of the water outlet 84c in the left-right direction is, for example, twice or more the vertical length of the water outlet 84c. The length of the water outlet 84c in the left-right direction is, for example, about 20 cm to 30 cm. The length of the water outlet 84c in the left-right direction is longer than the average width of a human neck, for example. Thereby, hot water can be appropriately applied to the bather's neck and shoulders.

  The packing 106 is provided between the housing unit 100 and the lid unit 108. The packing 106 is made of an elastic material such as rubber, and suppresses water from leaking in a direction other than the water discharge port 84 c from between the housing unit 100 and the lid unit 108.

  By supplying hot water from both the left and right sides to the casing portion 100 that is long in the left-right direction, it is possible to prevent the water discharged from the water outlet 84c from being biased in the left-right direction. For example, it is possible to prevent the water overflowing upward from the housing unit 100 from being biased in the left-right direction. Therefore, it is possible to discharge a clean belt-like water flow from the water outlet 84c.

  The rectifying plate 102 has a plurality of openings 102a arranged in the left-right direction. The rectifying plate 102 is provided in the upper part in the housing unit 100. The rectifying plate 102 rectifies the flow of water so that water overflows uniformly from the casing 100 in the left-right direction by passing hot water accumulated in the casing 100 through each opening 102a. Thereby, it can suppress more that the deviation which arises in the left-right direction is produced in the water discharged from the water discharge port 84c.

  The water flow path forming member 104 is provided between the rectifying plate 102 and the lid part 108 in the housing part 100. The water flow path forming member 104 blocks the upward flow of water that has passed through each opening 102a of the rectifying plate 102. In the water flow path forming member 104, the water that has passed through each opening 102a of the rectifying plate 102 once flows backward, turns back at the end of the water flow path forming member 104, and moves forward, thereby flowing through the water outlet 84c. Form a water pathway.

  By forming the water flow path as described above, the water that has passed through each opening 102a of the rectifying plate 102 is discharged from the water outlet 84c as compared with the configuration in which the water flows directly upward to the water outlet 84c. It is possible to further suppress the occurrence of unevenness in water in the left-right direction. The water flow discharged from the water discharge port 84c can be made into a more beautiful belt shape.

FIG. 14 is a front view schematically illustrating the water discharger of the bathtub according to the embodiment.
As shown in FIG. 14, the vertical width W2 of both ends of the water discharge port 84c is wider than the vertical width W1 of the central portion of the water discharge port 84c. Thereby, the water discharging part 84 makes the flow volume of the hot water discharged from the both ends of the water discharge port 84c larger than the flow volume of the hot water discharged from the center part of the water discharge port 84c. Thereby, it can suppress that the strip | belt-shaped water flow discharged from the spout 84c gathers in the center as it flows below. Therefore, the water flow discharged from the water discharge port 84c can be made into a more beautiful belt shape.

FIG. 15 is a perspective view schematically illustrating an example of a use state of the bathtub according to the embodiment.
As shown in FIG. 15, the strip-shaped hot water of the water discharge portion 84 discharged from the water discharge port 50 b of the pillow portion 50 hits the neck of the bather. Moreover, a part of the strip-shaped hot water discharged from the water discharger 84 flows to the bather's chest through the bather's neck and also flows to the bather's shoulder through the body and backrest 30 of the bather. .

  Thereby, for example, when a bather with high height sleeps with the pillow portion 50 at the highest position, and the shoulders, chest, etc. come out above the water surface, the bather's upper body is appropriately warmed. be able to.

Fig.16 (a)-FIG.16 (l) are explanatory drawings which represent typically an example of the procedure of the bathing of the bathtub which concerns on embodiment.
FIG. 16A to FIG. 16L are substantially the same as the state shown in FIG. Therefore, in FIG. 16A to FIG. 16L, detailed reference numerals are omitted for convenience.

  As shown in FIG. 16A, the back is brought into contact with the backrest 30, the buttocks are supported by the support 44, and the legs are placed on the second bottom surface 42 to take a bath. When doing so, first, as shown in FIG. 16B, both hands are placed on the right hand holding part 33 and the left hand holding part 34.

  Next, as shown in FIG. 16C to FIG. 16E, the upper body is raised while pressing the right hand holding part 33 and the left hand holding part 34 with both hands. At this time, in the bathtub 10, by storing both elbows in the right groove portion 35 and the left groove portion 36, the right hand holding portion 33 and the left hand holding are kept in a state where the elbows are bent toward the back side while suppressing the opening of the both collars. The part 34 can be manually pressed, and the bather can easily raise his / her upper body by the force generated by the pressing.

  Next, as illustrated in FIG. 16F, the collar portion is slid rearwardly from the support portion 44 toward the backrest portion 30 along the horizontal first bottom surface 41. Next, as shown in FIG. 16G, one leg or both legs are placed on the support portion 44. Next, as shown in FIG. 16 (h), by applying force to the legs placed on the support portion 44 and both hands applied to the right hand holding portion 33 and the left hand holding portion 34, the collar portion is further slid backward. And put the buttocks on the lower part of the backrest 30 (first region R1).

  Next, as shown in FIGS. 16 (i) and 16 (j), both legs are placed one by one on the horizontal first bottom surface 41. That is, the posture is crouched on the first bottom surface 41. And as represented to FIG.16 (k) and FIG.16 (l), by applying force to both legs, it stands on the 1st bottom face 41, and takes a bath from the bathtub 10. FIG.

  In addition, when bathing in and out of the bathtub 10, legs can be placed on the second bottom surface 42 that is higher than the first bottom surface 41 and horizontal. Thereby, it can make it easy to straddle the bathtub main body 12, and it can make it easier to bathe and bath with respect to the bathtub 10.

FIG. 17 is a plan view schematically showing a part of a reference bathtub.
In FIG. 17, the right side groove part 35, the left side groove part 36, etc. are not provided in the backrest part, but the reference bathtub BT which made the backrest part a uniform inclined surface is represented. In such a bathtub BT, when raising the upper body by pressing the hand against the backrest part from the state of sleeping, it is necessary to open the heel widely so that the elbow does not interfere with the backrest part as shown in FIG. is there. However, it may be difficult to raise the upper body because it is difficult to apply a large force to the hand if the heel is opened widely.

  Due to the structure of the human musculoskeletal system, when applying force by pressing both hands against the target, it is preferable that both the arms are closed because the force is easily applied. Moreover, in order to maximize the power of both arms due to the structure of the human musculoskeletal system, it is preferable to apply force by pressing both hands against the target with the elbows bent.

  In the bathtub 10 according to the present embodiment, by providing the right groove portion 35 and the left groove portion 36, the right hand holding portion and the left hand holding portion with the elbows bent toward the back side while suppressing the opening of both sides as much as possible. Can be pressed by hand (see FIGS. 3 and 16C). And the bather can raise the upper body easily by the force by this press. In addition, the right hand holding part 33 and the left hand holding part 34 where the bather's hand will be disposed in the sleeping state are pressed as they are to raise the upper body. Therefore, compared with the case where the rim of the bathtub 10 is gripped and the upper body is raised, the power point of the pressing force for getting up is provided at a position close to the body of the bather such as the right hand holding part 33 and the left hand holding part 34. Thus, the upper body can be raised in the bather with less pressing force.

  Unlike the body raising method for gripping a rim or the like, when the body is raised by pressing the right hand holding part 33 and the left hand holding part 34 in the bathtub main body 12 in which hot water accumulates, the body is raised. When the right hand holding part 33 and the left hand holding part 34 are pressed, the hand may slip or it may be necessary to apply force to the arm unnecessarily to balance the hand so that the hand does not slip. Arise.

  On the other hand, in the bathtub 10, the right hand holding part 33 and the left hand holding part 34 are inclined downward so as to be a substantially vertical surface with respect to the forward obliquely upward force necessary for raising the upper body. Therefore, when pressing the right hand support 33 and the left hand support 34 to raise the upper body, it becomes difficult to apply a force along the surfaces of the right hand support 33 and the left hand support 34 and the hand slips. The bather does not need to apply unnecessary force on the arm to balance the arm so that it does not slip.

  Moreover, in the bathtub 10, the lower part of the right side groove part 35 inclines below toward the front, and the lower part of the left side groove part 36 inclines below toward the front. This makes it possible to press the right groove part 35 and the left groove part 36 according to the angle of rising of the upper body when the right hand holding part 33 and the left hand holding part 34 are pressed to raise the upper body. The upper body can be raised more easily.

  Moreover, in the bathtub 10, the inclination angle with respect to the horizontal direction of the lower part of the right side groove part 35 and the lower part of the left side groove part 36 is larger than the inclination angle with respect to the horizontal direction of the right hand holding part 33 and the left hand holding part 34. Accordingly, the inclination angle of the right groove part 35 and the left groove part 36 is set so that the right hand holding part 33 and the left hand holding part 34 are inclined so that the surface is substantially perpendicular to the direction in which the force is applied in accordance with the rising angle of the upper body. By making it larger than the inclination angle, it is possible to make the bather more likely to wake up.

  Further, in the bathtub 10, the right shoulder rest 31 and the left shoulder rest 32 protrude flush with the backrest 30 or forward. Thereby, even when the right side groove part 35 and the left side groove part 36 for putting the elbow are provided, it is possible to suppress the bather's shoulder from sinking to the back side from the backrest part 30 in the sleeping state. it can. Thereby, it can be made to bathe comfortably in the state where it was weaker.

  In the above embodiment, the right shoulder rest 31 and the left shoulder rest 32 are provided on the left and right sides of the backrest 30. The shoulder rest may be provided only on one of the left side and the right side of the backrest 30. In the above embodiment, the right hand holding part 33 and the left hand holding part 34 are provided on the left and right sides of the backrest part 30. The hand rest may be provided only on one of the left side and the right side of the backrest 30. In the above embodiment, the right groove 35 and the left groove 36 are provided on the left and right sides of the backrest 30. The groove may be provided only on the left side or the right side of the backrest 30.

  As described with reference to FIG. 16, when the bather stands up from the sleeping state, the buttocks that are in contact with the support 44 are slid in the direction of the backrest 30 on the horizontal first bottom surface 41 (FIG. 16). 16 (f)). Thereafter, the leg is pulled and the back of the leg is placed on the support portion 44 (see FIG. 16G). Then, by applying a force that stretches the leg from that state, the buttocks are placed on the backrest 30 and raised along the inclination of the backrest 30 (see FIG. 16 (h)).

  In the bathtub 10, the inclination angle of the support part 44 is made larger than the inclination angle of the backrest part 30 at the same height. As a result, when a force to stretch the knee is applied from the state where the back of the foot is placed on the support portion 44, the back of the foot follows the inclination of the support portion 44 before the buttocks rise along the inclination of the backrest portion 30. It can suppress rising. Thereby, the buttocks can be finally moved to a position higher than the lowermost end (for example, heel) of the back of the leg (see FIG. 16 (i)), and the body can easily stand up in the bathtub body 12. Therefore, it is possible to easily stand up from the sleeping state while enabling sleeping in a state where the legs are arranged at a position higher than the buttocks.

  In the bathtub 10, the lower end 30 a of the backrest 30 is connected to the first bottom surface 41. The inclination angle of the backrest 30 is smaller than the inclination angle of the support 44 at the same height from the same height as the upper end 44 a of the support 44 to the first bottom surface 41. As a result, the heel portion that is in contact with the support portion 44 is slid in the direction of the backrest portion 30 on the horizontal first bottom surface 41, and the heel portion is directly moved from the state in which the legs are attracted and the back of the legs is placed on the support portion 44. Can be raised along the inclination of the backrest 30 from the first bottom surface 41. Therefore, the rising operation can be performed more easily.

  By making the inclination angle of the support portion 44 larger than the inclination angle of the backrest portion 30 at the same height, the heel portion can be raised along the inclination of the backrest portion 30, while hot water is accumulated in the bathtub main body 12. Since the backrest 30 provided on the back is easy to slip, when the force to extend the knee is greatly applied from the state where the back of the leg is placed on the support 44, the buttocks rapidly rises along the inclination of the backrest 30. And your knees may be stretched out. In the state where the knees are fully extended, if the back of the legs slips when the back of the legs is moved to an easily standing part in the bathtub, the legs are again moved to another easily standing part in the bathtub main body 12 to prevent falling. It becomes difficult to put out and may fall.

  In the bathtub 10, the backrest part 30 has the bending line FL provided in the boundary part of 1st area | region R1 and 2nd area | region R2, and the inclination angle of 2nd area | region R2 is from the inclination angle of 1st area | region R1. Is also big. As a result, when the collar rises along the inclination of the backrest 30, the collar contacts the bending line FL. Thereby, it is possible to easily stop the sudden rise of the buttocks by the bending line FL. That is, it is easy to stop the rise of the buttocks at a position where the buttocks abut on the bending line FL and the knee is not fully stretched. In the middle waist state, since the knee is not fully extended, even when the back of the leg slips, it is possible to easily perform the operation of moving the back of the leg to an easily standing part in the bathtub body 12 in order to prevent falling. The rising operation can be performed more safely.

  In the bathtub 10, the bending line FL is provided at a position higher than the upper end 44 a of the support portion 44. Thereby, since the position which stops a raise of a buttocks becomes a position higher than the upper end 44a of the support part 44, a buttocks can be moved to a position higher than the whole leg sole, and the rising operation | movement in the bathtub main body 12 is performed more. Easy posture. Therefore, the rising operation can be performed more easily and safely.

  Moreover, in the bathtub 10, in the bottom face part 14, the front side rather than the support part 44 is horizontal over the whole. Thus, the bather can stand on the horizontal bottom surface portion 14 (second bottom surface 42) on the front side of the support portion 44 when straddling the bathtub body 12 to enter the bathtub body 12. Thereby, it can make it easy to go in and out with respect to the bathtub main body 12, and can suppress the fall of the bather in the case of going into and out of the bathtub main body 12.

  In the bathtub 10, a steeply inclined portion 38 is provided in the lower center of the backrest portion 30. If the length of the first bottom surface 41 in the front-rear direction is too short, the amount of movement for sliding the buttocks in the direction of the backrest 30 is shortened, making it difficult to place the back of the leg on the support 44. On the other hand, in order to increase the length of the first bottom surface 41 in the front-rear direction, if the support portion 44 is provided farther to the front side, it becomes difficult to bring the buttocks into contact with the support portion 44 in a sleeping state, It becomes difficult to sleep while the buttocks are in contact with the support portion 44. On the other hand, in the bathtub 10, a steeply inclined portion 38 having a larger inclination angle with respect to the horizontal direction than the backrest portion 30 is provided between the backrest portion 30 and the first bottom surface 41. For this reason, the lower part of the backrest part 30 which becomes a dead space that does not contribute much to the state of sleeping is shortened by the steeply inclined part 38, thereby suppressing the loss of the feeling of sleeping, while reducing the distance of the first bottom surface 41. Can be long. Therefore, it is possible to facilitate the rising operation while suppressing the feeling of sleeping in the sleeping state in a state where the buttocks are in contact with the support portion 44.

  In the bathtub 10, the first bottom surface 41 is also horizontal in the left-right direction, and the length in the front-rear direction of both side portions of the first bottom surface 41 is longer than the length in the front-rear direction of the center portion of the first bottom surface 41. . Thereby, when entering / exiting the bathtub main body 12, a leg can be put on the side part of the 1st bottom face 41, and it can make it easy to enter / exit the bathtub main body 12 more. In addition, since the length in the front-rear direction of the center portion of the first bottom surface 41 is shorter than the length in the front-rear direction of both side portions, it is possible to suppress an increase in the distance between the backrest portion 30 and the support portion 44. . Therefore, it is possible to facilitate the rising operation while suppressing the feeling of sleeping in the sleeping state in a state where the buttocks are in contact with the support portion 44.

  Moreover, in the bathtub 10, the lower end of the overflow port 52 which is a prescription | regulation part which prescribes | regulates the overflow level of the water in the space SP of the bathtub main body 12 of the head mounting surface 50a of the state which has arrange | positioned the pillow part 50 in the lowest position. It is provided below the position H2 that is 120 mm higher than the position H1.

  As a result of intensive studies on the relationship between sleeping posture and the human head structure, the applicant has studied from the occipital region (occipital point MBP) of an adult Asian woman with a relatively short height worldwide. The 5% tile value of the length is about 195 mm, and the length in the height direction from the head placement surface 50 a to the mouth is about 120 mm, considering the inclination of the sleeping bath and the state where the jaw is pulled. I got new knowledge that it never gets smaller. More specifically, the length from the occipital point MBP to the mouth is the length from the occipital point MBP to the mouth in a direction perpendicular to the frontal plane (a plane that divides the human body into the ventral side and the dorsal side). In other words, it is the length in the front-rear direction (horizontal direction) from the human occipital point MBP to the mouth in an upright position facing the front. Therefore, by setting the overflow port 52 as described above, the bather having a relatively small physique adds the hot water to the bathtub body 12 with the height of the pillow portion 50 being the lowest position. It can suppress that the water level of the hot water in the main body 12 exceeds a bather's mouth, and gives a bather an unpleasant feeling.

  In order to maintain the sleeping state, it is preferable to support the bather's buttocks by the support portion 44, but the body of the bather generates buoyancy due to hot water accumulated in the bathtub body 12 below the surface of the water. For this reason, it is not easy to firmly support the collar portion with the support portion 44. Also, if the body floats due to buoyancy, the bather will unconsciously apply force to the muscles to balance the body, so it may not be able to fully weaken and obtain a sufficient relaxation effect .

  On the other hand, in bathtub 10, by providing 1st field R1 and 2nd field R2 in backrest part 30, giving a bathing feeling to a bather by 1st field R1, rather than 1st field R1 The bather's back can be bent by the second region R2 having a large inclination angle. Thereby, the bather can use the “spring force F of the back to straighten the back” to work on the bather unconsciously in a state where the back is bent. You can get the force to press the body. Moreover, since the pillow part 50 which can move up and down is provided in 2nd area | region R2, even when the pillow part 50 exists in the lowest position, a bather's back in a sleeping state can be bent by 2nd area | region R2. The bather can obtain a force to press the body against the backrest 30 and the support 44 of the bathtub body 12. From the above, the backrest 30 of the bathtub main body 12 without burdening the body while the bather can sleep at the position of the pillow 50 that matches his / her height by moving the pillow 50 up and down. And the force which presses a body to the support part 44 can be obtained, and it can bathe in the weak state.

  Moreover, in the bathtub 10, since the bending line | wire FL is provided below the lower end of the pillow part 50 made into the lowest position and spaced apart from the lower end, even if the pillow part 50 exists in the lowest position, it is 2nd more reliably. The bather's back in the sleeping state can be bent by the region R <b> 2, and the bather can obtain the force of pressing the body against the backrest 30 and the support 44 of the bathtub body 12.

  The predetermined interval DT is 100 mm or more. Accordingly, the bather can sleep at the position of the pillow portion 50 that matches his / her height, and more securely puts the body on the backrest portion 30 and the support portion 44 of the bathtub body 12 without imposing a burden on the body. A pressing force can be obtained, and bathing can be performed in a weak state.

  In addition, as a result of diligent examination on the relationship between the posture of the sleeping bath and the heat-retaining effect of the sleeping bath, if the shoulder or chest protrudes above the water surface in the sleeping bath posture, We obtained new knowledge that the warming effect during and after bathing is higher when hot water is applied to the neck than hot water applied to the chest.

  In the bathtub 10, a water discharge portion 84 that discharges water is provided at the neck of the bather so that the water discharge portion 84 follows the movement of the pillow portion 50. Thereby, even if a tall bather's shoulder, chest, etc. have come out above the surface of the water, it is possible to suppress the chill felt by the upper body. Also, by bathing hot water from the water discharger 84 and warming the neck and chest of the bather, for example, bathing while suppressing the burden (water pressure) on the bather's heart as compared to a bathing form that immerses to the neck. The person's upper body can be warmed appropriately.

  In the bathtub 10, the pillow part 50 covers the supply pipes 90 and 92 so that the load from the front does not act on the supply pipes 90 and 92 regardless of the height of the water discharge part 84 in the predetermined range MA3. Thereby, for example, a load is applied to the supply pipes 90 and 92 from the front by a part of the body of the bather (head, back, arms, etc.), and the flexible supply pipes 90 and 92 are crushed and blocked. Can be suppressed. Therefore, water discharge can be continued without delay.

  In the bathtub 10, since the support part 80 supports only the partial range of the up-down direction and the front-back direction of the axial part 82 so that a movement to an up-down direction is possible, the support part 80 can be reduced in size. The pillow portion 50 always covers both the shaft portion 82 and the support portion 80 regardless of the position in the vertical direction or the front-rear direction. Thereby, while being able to improve the design property of the bathtub 10, it can suppress that the axial part 82, the support part 80, etc. contact a bather, and can improve a relaxation effect more. Therefore, it is possible to provide the bathtub 10 with improved design and relaxation effect while allowing the pillow portion 50 to move up and down and back and forth.

  In the bathtub 10, the support part 80 supports the shaft part 82 slidably by pressing the left and right inner surfaces S1, S2 or the left and right outer surfaces S3, S4 formed in a planar shape of the shaft part 82. . Since the shaft portion 82 is slidably supported in this way, when the height is adjusted by moving the pillow portion 50 in the vertical direction, continuous adjustment is possible instead of multistage adjustment. Become. Therefore, the bather can easily finely adjust the height of the pillow portion 50 in accordance with the height and the like, so that the pillow portion can be arranged at a height more suitable for the height and the relaxation effect can be further improved.

  In the bathtub 10, the support part 80 supports the axial part 82 slidably by pressing the left and right inner surface S1, S2 of the cylinder part 82a with the left and right ends E1, E2 of the accommodated part 80b. Accordingly, the shaft portion 82 can be slidably supported by the support portion 80 with a simple structure. Further, since at least a part of the projecting portion 80a is accommodated in the internal space of the shaft portion 82, the support portion 80 can be further reduced in size, and the shaft portion 82 and the support portion 80 are more reliably covered by the pillow portion 50. be able to.

  In the bathtub 10, the lateral width of the opening 82b is smaller than the lateral width of the accommodated portion 80b. Thereby, even when a bather adjusts the height of the pillow part 50, even if a force that causes the cylinder part 82a to come off from the accommodated part 80b is unexpectedly applied to the pillow part 50, the cylinder Since the portion 82a is hooked on the accommodated portion 80b, the shaft portion 82 can hardly be detached from the support portion 80, and the height of the pillow portion 50 can be adjusted more easily.

  In the bathtub 10, the support part 80 is arrange | positioned above the overflow water level OFL. Thereby, it can suppress that the support part 80 is immersed in the hot water in the bathtub main body 12. FIG. Thereby, the dirt and deterioration of the support part 80 can be suppressed, and the shaft part 82 can be supported by the support part 80 so as to be appropriately movable over a long period of time.

FIG. 18A to FIG. 18C are reference views schematically showing the movement of the shaft portion.
18 (a) and 18 (b), the length L11 in the direction perpendicular to the backrest 30 of the receiving portion 80b is the length in the direction perpendicular to the backrest 30 inside the cylindrical portion 82a. The case where it is substantially the same as the length L12 is schematically shown. In this case, the shaft portion 82 cannot move in a direction perpendicular to the backrest portion 30.

  With respect to the shaft portion 82 that does not move in the direction perpendicular to the backrest portion 30, the outer peripheral portion 50f of the pillow portion 50 is extended to the vicinity of the backrest portion 30, so that the shaft portion 82 and the support portion 80 can be covered more securely. On the other hand, when the backrest 30 is curved in a concave shape in the vertical direction, as shown in FIG. 18B, when the pillow 50 is moved in the vertical direction and the front-rear direction, the outer peripheral portion 50f of the pillow 50 The shaft portion 82 may come into contact with the backrest portion 30 and the movement of the pillow portion 50 may be hindered, or the backrest portion 30 may be damaged.

  On the other hand, in the bathtub 10, the support portion 80 supports the shaft portion 82 so as to be movable in the vertical direction and the front-rear direction, and supports the shaft portion 82 so as to be movable in a direction perpendicular to the backrest portion 30. To do. As a result, as shown in FIG. 18C, the outer peripheral portion 50 f of the pillow portion 50 extends to the vicinity of the backrest portion 30, and the shaft portion 82 and the support portion 80 can be covered more securely, while the backrest portion 30. When the pillow portion 50 is moved in the up-down direction and the front-rear direction, the outer peripheral portion 50f and the shaft portion 82 of the pillow portion 50 come into contact with the backrest portion 30 when the pillow portion 50 is curved in a concave shape in the up-down direction. This can be suppressed. While improving the degree of freedom of design of the bathtub 10 such as enabling the shape of the curved backrest portion 30, the outer peripheral portion 50 f and the shaft portion 82 of the pillow portion 50 come into contact with the backrest portion 30, and the movement of the pillow portion 50 is obstructed. Or the backrest 30 can be prevented from being damaged.

FIG. 19 is a plan view schematically illustrating a modified example of the bathtub according to the embodiment.
Note that components that are substantially the same in function and configuration as those in the above embodiment are given the same reference numerals, and detailed descriptions thereof are omitted.
As shown in FIG. 19, in the bathtub 10 a, the right shoulder rest 31 and the left shoulder rest 32 are provided on the left and right sides of the upper portion of the backrest 30 more laterally than the backrest 30. Moreover, in the bathtub 10 of the said embodiment, the right side groove part 35 and the left side groove part 36 are provided in each side of the backrest part 30, the right side shoulder pad part 31, and the left side shoulder pad part 32. FIG. On the other hand, in the bathtub 10 a, the right groove 35 is provided between the right shoulder rest 31 and the right hand rest 33 on the side of the backrest 30, and the left groove 36 is located on the side of the backrest 30. , The left shoulder pad 32 and the left hand pad 34 are provided.

  Thus, the right shoulder rest 31 and the left shoulder rest 32 do not necessarily have to be formed integrally with the backrest 30. For example, when the width of the bathtub body 12 in the left-right direction is relatively narrow and the width of the backrest portion 30 cannot be widened, the right shoulder rest 31 and the left shoulder rest 32 as in the bathtub 10a illustrated in FIG. May be provided on the side of the backrest 30.

  Even when the right shoulder rest 31 and the left shoulder rest 32 are provided on the side of the backrest 30, the right shoulder rest 31 and the left shoulder rest 32 are flush with the backrest 30 or forward. It is preferable. Thereby, as mentioned above, it can suppress that a bather's shoulder sinks in the back side rather than the backrest part 30 in a sleeping state, and it can be made to bathe comfortably in the state where it was weaker. .

FIG. 20 is a cross-sectional view schematically illustrating a modified example of the bathtub according to the embodiment.
As shown in FIG. 20, in the bathtub 10 b, the backrest 30 has a stepped portion 39. The step portion 39 is provided at the lower portion of the backrest portion 30. For this reason, in the bathtub 10 b, the lower end 30 a of the portion of the backrest portion 30 that continuously descends and slopes forward is positioned above the first bottom surface 41.

  Thus, the lower end 30 a of the backrest 30 does not necessarily have to be connected to the first bottom surface 41. The backrest part 30 may have a part with a larger inclination angle than the support part 44 in the same height.

  However, it is preferable that the lower end 30 a of the portion of the backrest portion 30 that continuously descends and tilts forward is positioned below the upper end 44 a of the support portion 44. As a result, as described above, the collar part that is in contact with the support part 44 is slid in the direction of the backrest part 30 on the horizontal first bottom surface 41, and the collar part can be easily raised along the inclination of the backrest part 30. can do. This makes it easy for the bather to get up.

FIG. 21 is a cross-sectional view schematically showing a modification of the bathtub according to the embodiment.
FIG. 21 schematically shows a state in which the portion of the first bottom surface 41 of the bathtub body 12 is cut in a cross section parallel to the left-right direction and the up-down direction and viewed from the front side.
As shown in FIG. 21, in the bathtub 10 c, the first bottom surface 41 has a concave curved surface shape in which a center portion in the left-right direction is recessed below both end portions in the left-right direction. Thus, the 1st bottom face 41 should just be horizontal at least in the front-back direction, and does not necessarily need to be horizontal in the left-right direction.

  For example, as shown in FIG. 21, the first bottom surface 41 is formed in a concave curved surface shape. That is, the 1st bottom face 41 is made into the curved surface form which is easy to fit a bather's buttocks. Accordingly, for example, when the buttock that is in contact with the support portion 44 is slid in the direction of the backrest portion 30 on the first bottom surface 41 that is horizontal in the front-rear direction, bathing is performed by the left and right curved surfaces of the first bottom surface 41. The person's buttocks can be appropriately guided to the backrest 30. For example, it is possible to prevent the bather's buttocks from slipping into the right groove 35 or the left groove 36. Accordingly, it is possible to make the bather easily get up.

  On the other hand, as shown in FIG. 3 and the like, when the first bottom surface 41 is formed in a horizontal plane, it is possible to easily stand on the first bottom surface 41 when taking a bath, for example. For example, the fall of the bather can be more reliably suppressed, and the safety can be further improved. Moreover, when draining the water in the bathtub main body 12, it can suppress that a water remains in the 1st bottom face 41, etc., and can also improve drainage.

Drawing 22 (a) and Drawing 22 (b) are top views showing typically the modification of the support part of the bathtub concerning an embodiment.
22 (a) and 22 (b) correspond to the cross-sectional shape shown in FIG. 8 (b).
As shown in FIG. 22A, in this example, the accommodated portion 80b of the support portion 80 extends in the vertical direction (front-rear direction) and has a plurality of contact portions 80d. Each contact portion 80d is provided side by side in the vertical direction, protrudes in the left-right direction, and contacts the left and right inner surfaces S1, S2 of the cylindrical portion 82a. Each contact portion 80d is provided at, for example, both ends in the up-down direction and the center portion in the up-down direction of the accommodated portion 80b. In this example, a total of six abutment portions 80d are provided, three on each side. The number of each contact portion 80d is not limited to six and may be any number.

  In this example, support part 80 has a plurality of projection parts 80a arranged in the up-and-down direction. The support part 80 has, for example, two projecting parts 80a and is attached to the backrest part 30 by two screws 80c. The number of protrusions 80a may be one, or three or more.

  The accommodated portion 80b extends in the vertical direction, and connects between the protruding portions 80a. In other words, the support portion 80 in this example has a shape in which the received portions 80b of the two support portions 80 illustrated in the above embodiment are connected.

  As described above, in the configuration in which the accommodated portion 80b is extended in the vertical direction and the plurality of contact portions 80d are provided, the shaft portion 82 can be appropriately supported even by one support portion 80, for example. In addition, for example, when the protrusions 80a are connected by the storage portions 80b, the rigidity between the protrusions 80a can be increased as compared with the configuration in which the two support portions 80 are provided. Thereby, the twist of the axial part 82 etc. can be suppressed and the rattling of the pillow part 50 can be suppressed, for example.

  In FIG. 22A, a substantially semicircular contact portion 80d is shown. On the other hand, FIG. 22B shows a substantially triangular contact portion 80d. In the substantially triangular contact part 80d, the contact area with the inner side surfaces S1 and S2 of the cylindrical part 82a can be reduced as compared with the substantially semicircular contact part 80d. By providing a plurality of contact portions 80d to increase the number of contact points with the inner side surfaces S1 and S2 of the cylinder part 82a and reducing the contact area with the inner side surfaces S1 and S2 of the cylinder part 82a, for example, the shaft part 82 It is possible to suppress the generation of sound at the contact portion between the shaft portion 82 and the support portion 80 when the slider is slid. Thereby, the quality of the bathtub 10 can be improved more, for example.

  The shape of each contact portion 80d is not limited to the above, and may be any shape that can appropriately support the shaft portion 82 and can minimize the contact area with the inner side surfaces S1 and S2.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, and the like of each element included in the bathtub 10 and the like are not limited to those illustrated, and can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  10, 10a to 10c bathtub, 12 bathtub body, 14 bottom surface portion, 16 side surface portion, 21 first inner surface, 22 second inner surface, 30 backrest portion, 31 right shoulder rest portion, 32 left shoulder rest portion, 33 right hand rest 34, left hand rest, 35 right groove, 36 left groove, 38 steep slope, 39 step, 41 first bottom surface (horizontal portion), 42 second bottom surface (mounting portion), 44 support portion, 50 pillow portion , 51 Drain port, 52 Overflow port (regulation part), 53, 54 Injection port, 55 Suction port, 60 Overflow pipe, 62 Pump, 64, 66 Circulation pipe, 68 Drain pipe, 80 Support part, 82 Shaft part, 84 Water discharge part, 86, 88 Water supply part, 90, 92 Supply piping, 100 Case part, 102 Current plate, 104 Water flow path forming member, 106 Packing, 10 Lid, FL bending line, R1 first region, R2 second region

Claims (6)

The bottom,
A side part surrounding the bottom part, extending upward from the bottom part and having a backrest part;
A support provided on the backrest;
It moves along the backrest over a predetermined range in the vertical direction by extending in the vertical direction and being supported by the support portion so as to be movable in the vertical direction only in a part of the vertical direction. The shaft,
A pillow portion that is attached to the shaft portion and covers the shaft portion and the support portion, and moves in the vertical direction over the predetermined range along the backrest portion together with the shaft portion,
A bathtub characterized by comprising. The left and right inner surfaces or the left and right outer surfaces of the shaft portion are formed in a planar shape,
2. The bathtub according to claim 1, wherein the support portion slidably supports the shaft portion by pressing the left and right inner surfaces or the left and right outer surfaces formed in a planar shape. The support part has a protruding part protruding from the backrest part,
The shaft portion includes a cylindrical portion that is provided in a cylindrical shape and has an opening extending in the vertical direction on the backrest portion side so that at least a part of the protruding portion can be stored.
The left and right ends of the receiving portion stored in the cylindrical portion in the protruding portion have elasticity,
The said support part supports the said axial part so that sliding is possible by pressing the left and right inner surface of the said cylinder part with the said right and left edge part of the said to-be-stored part. Bathtub.   The bathtub according to claim 3, wherein a width of the opening is smaller than a width of the receiving portion. Further comprising a defining part for defining an overflow level of water stored in a space surrounded by the bottom surface part and the side surface part,
The bathtub according to any one of claims 1 to 4, wherein the support part is disposed above the overflow water level.   The said support part supports the said axial part so that it can move also to the perpendicular | vertical direction with respect to the said backrest part while supporting the said axial part so that it can move to the said up-down direction. The bathtub as described in any one of.

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