JP6960106B2 - Bathtub pillow - Google Patents

Description

Aspects of the present invention generally relate to bathtub pillows.

Bathtub pillows that are installed in bathtubs are known so that bathers can rest their heads and take a bath comfortably. In such a bathtub pillow, for example, as in Patent Document 1, there is a type having a storage space inside so that it can be installed while covering a functional part such as a water discharge device.

Since the head of the bather is placed on the bathtub pillow, it is preferable that at least the upper surface of the bathtub pillow is made of a relatively soft material having elasticity. However, if the entire bathtub pillow is made of a soft material, it may not be able to support the load on the bather's head and may bend downward. In particular, a type of bathtub pillow having a storage space inside has a problem that the storage space cannot be properly maintained due to downward bending.

Therefore, in a type of bathtub pillow having a storage space inside, a support portion for supporting the load of the bather's head and a support portion are arranged above the support portion, and at least the upper surface is formed of a material softer than the support portion. It is considered to form a bathtub pillow with the head rest.

When the bathtub pillow is formed by the support part and the head resting part, when removing the bathtub pillow from the bathtub for cleaning etc., the operator grasps the head resting part forming the upper surface and applies a force upward. Highly likely to be removed. At this time, the head mounting portion made of a material softer than the support portion is bent, and if this is repeated, there is a problem that a crease due to the bending is formed on the upper surface of the head mounting portion. For this reason, it is desired that a bathtub pillow having a storage space inside can suppress deformation of the storage space without impairing cushioning properties, and can prevent creases from being generated on the upper surface.

Japanese Unexamined Patent Publication No. 2016-8428

The present invention has been made based on the recognition of such a problem, and it is possible to suppress the deformation of the internal storage space without impairing the cushioning property, and it is possible to suppress the occurrence of creases on the upper surface of the bathtub. The purpose is to provide pillows for use.

The first invention is a bathtub pillow that is installed in a bathtub and on which a bather's head can be placed, and has a pair of side portions, a rear end portion that connects the rear ends of the pair of side portions, and a rear end portion. To form a support portion for supporting the load of the bather's head and an upper surface provided on the support portion on which the bather's head is placed, and between the pair of side portions. A head-mounting portion that forms a storage space for accommodating the functional portion of the bathtub together with the support portion by covering the upper part of the space is provided, and the hardness of the head-mounting portion is the hardness of the support portion. The connection line on the storage space side, which is softer than the hardness of the bathtub and represents the outer edge of the connection surface between the rear end portion and the head mounting portion, is a bathtub pillow having a curved point. Is.

According to this bathtub pillow, the bathtub pillow is formed by the hard support portion and the soft head resting portion, so that the storage space is deformed when the bather's head is placed without impairing the cushioning property. Can be suppressed. The connection line on the storage space side is curved with an inflection point. As a result, even when the operator grasps the front end of the head mounting portion made of a soft material and applies a force upward to remove the bathtub pillow from the bathtub, the head mounting portion is connected from the front end. It is possible to make it difficult to apply force to the line by the "principle of the lever". Therefore, as compared with the case where a connection line extending linearly in the left-right direction is formed, for example, the head mounting portion formed of a soft material with respect to the support portion is greatly bent from the connection line as a base point, and the head mounting portion is bent. It is possible to prevent the occurrence of creases on the upper surface of the surface. For example, since the connection line on the storage space side has a curved shape having an inflection point, when the head mounting portion is repeatedly bent, the connection line is the same as the base point as compared with a linear connection line or the like. It is possible to prevent bending at a point. For example, the bent portion of the head mounting portion can be shifted back and forth. Therefore, even when the head mounting portion is repeatedly bent, it is possible to prevent a large crease from being generated on the upper surface of the head mounting portion. As described above, it is possible to provide a bathtub pillow that can suppress the deformation of the internal storage space without impairing the cushioning property and can suppress the occurrence of creases on the upper surface.

A second invention is a bathtub pillow according to the first invention, wherein the vicinity of the center of the connection line on the storage space side in the left-right direction is located in front of the inflection point.

Since the vicinity of the center of the head mounting portion in the left-right direction is easier to grip and apply force than the end portion in the left-right direction, there is a high possibility that a large force is applied to the head mounting portion. Further, when the portion of the front end of the head mounting portion near the center in the left-right direction of the storage space is gripped, the distance from the pair of side portions of the support portion becomes long, so that the other front end of the head mounting portion is held. Compared to the case where the portion is gripped, the force of the "lever principle" is more likely to be applied to the head resting portion. Therefore, as described above, when the portion near the center of the storage space of the head mounting portion is gripped by locating the vicinity of the center of the connection line on the storage space side in the left-right direction in front of the inflection point, etc. In addition, it is possible to make it difficult for the force based on the "lever principle" with the connection line as the base point to be applied to the head mounting portion. As a result, it is possible to more reliably prevent the head-mounting portion from being greatly bent with the connection line as the base point and causing a crease mark on the upper surface of the head-mounting portion.

In the third aspect of the invention, in the second invention, the connection line on the storage space side has a curved portion curved so as to be convex toward the front side, and the apex portion of the curved portion is the storage. A bathtub pillow provided near the center of the connection line on the space side in the left-right direction.

According to this pillow for bathtub, even when the part near the center of the storage space of the head resting part is gripped, the force based on the "leck principle" based on the connection line is applied to the head resting part. It can be difficult to hang.

A fourth invention is a bathtub pillow according to any one of the first to third aspects, wherein at least a part of the connection line on the storage space side has a corrugated shape.

According to this bathtub pillow, since at least a part of the connecting line has a corrugated shape, that is, a shape having a plurality of inflection points and apex parts which are nodes, a large crease mark due to a large bending of the head rest portion. Can be more reliably suppressed from being generated on the upper surface of the head resting portion.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least a part of the connection line on the storage space side is located in front of the virtual line connecting the rear ends of the pair of side portions. It is a pillow for bathtubs, which is characterized by the fact that it is used.

According to this bathtub pillow, even when the operator grabs the front end of the head resting part made of a soft material and applies a force upward to remove the bathtub pillow from the bathtub, the head resting is placed on the head. It is possible to make it more difficult to apply the force based on the "pile principle" from the front end of the portion to the connecting line.

According to the aspect of the present invention, there is provided a bathtub pillow capable of suppressing deformation of the internal storage space without impairing cushioning properties and suppressing the formation of creases on the upper surface.

It is a perspective view which shows typically the bathtub and the pillow for bathtub which concerns on embodiment. It is a top view which shows typically the bathtub and the pillow for bathtub which concerns on embodiment. It is a perspective view which shows typically the bathtub pillow which concerns on embodiment. It is a bottom view which shows typically the bathtub pillow which concerns on embodiment. It is sectional drawing which shows typically the bathtub pillow which concerns on embodiment. It is a bottom view which shows typically the modification of the bathtub pillow which concerns on embodiment. It is a bottom view which shows typically the modification of the bathtub pillow which concerns on embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
FIG. 1 is a perspective view schematically showing a bathtub and a bathtub pillow according to an embodiment.
FIG. 2 is a plan view schematically showing a bathtub and a bathtub pillow according to the embodiment.
As shown in FIGS. 1 and 2, the bathtub pillow 10 is installed in the bathtub 100 for storing hot water. The bathtub pillow 10 is used in a state of being attached to the bathtub 100, and enables a bather who has bathed in the bathtub 100 to put his / her head on it. In other words, the bathtub pillow 10 is attached to the bathtub 100 so as to support the bather's head.

The bathtub 100 includes a bathtub body 102. The bathtub body 102 has an inner wall surface 104. The inner wall surface 104 has a backrest surface 106 that supports the back of the bather. Here, in the present specification, the upper part is referred to as "upper", the lower part is referred to as "lower", the front is referred to as "front", and the rear is referred to as "rear" when viewed from the bather whose back is in contact with the backrest surface 106. , The right side is "right side" and the left side is "left side".

The bathtub 100 includes a functional unit 110. The functional unit 110 is provided on the upper end (rim surface) connected to the backrest surface 106. The functional unit 110 is, for example, a water discharge unit that discharges hot water toward the inside of the bathtub body 102. The functional unit 110 discharges hot water toward the front. For example, the bathtub 100 sucks the hot water stored in the bathtub main body 102 by a pump (not shown), and discharges the sucked hot water from the functional unit 110. In other words, the bathtub 100 circulates hot water stored in the bathtub body 102. As a result, hot water can be discharged from the functional unit 110 without overflowing the hot water from the bathtub main body 102.

The functional unit 110 discharges hot water toward the neck and shoulders of a bather whose back is in contact with the backrest surface 106, for example. Thereby, for example, the neck and shoulders of the bather can be warmed more, the neck and shoulders of the bather can be given a massage effect, and the relaxation effect at the time of bathing can be further enhanced.

The functional unit 110 has a slit-shaped spout 110a extending in the left-right direction. As a result, the functional unit 110 discharges a strip-shaped water stream extending in the left-right direction from the spout 110a. The length of the spout 110a in the left-right direction is, for example, 20 cm or more. The lateral length of the spout 110a is, for example, longer than the average width of the human neck. As a result, hot water can be appropriately applied to the neck and shoulders of the bather whose back is in contact with the backrest surface 106. Further, the length of the spout 110a in the left-right direction is shorter than, for example, the width of the space inside the bathtub body 102 in the left-right direction. As a result, hot water can be appropriately discharged into the bathtub body 102.

The functional unit 110 is not limited to the water discharge unit, and may be, for example, a lighting unit that irradiates light toward hot water in the bathtub body 102. The functional unit 110 may have, for example, a water discharge function for discharging hot water and a lighting function for illuminating the discharged hot water. The functional unit 110 may be any device used by being attached to the bathtub 100.

The bathtub pillow 10 is attached on the upper end of the bathtub body 102 so as to be connected to the backrest surface 106. As a result, the bather can take a bath with his / her back in contact with the backrest surface 106 and his / her head resting on the bathtub pillow 10. By providing the bathtub pillow 10 in this way, it is possible to allow the bather to take a bath in a more relaxed posture. The relaxation effect at the time of bathing can be further enhanced.

Further, the bathtub pillow 10 is attached on the upper end of the bathtub body 102 so as to cover the functional portion 110 from above. The bathtub pillow 10 covers at least a part of the functional unit 110 in a state of being attached to the bathtub main body 102. The bathtub pillow 10 enables the head of the bather to be placed and suppresses the exposure of the functional unit 110 to the outside. As a result, even when the functional unit 110 is provided in the bathtub main body 102, deterioration of the aesthetic appearance of the bathtub 100 can be suppressed. In the bathtub 100, by providing the bathtub pillow 10 and the functional unit 110, it is possible to improve the relaxation effect and the aesthetic appearance.

The bathtub pillow 10 has a pillow body 12 on which a bather's head can be placed, and an opening 14 provided on the front surface of the pillow body 12. As described above, the pillow body 12 is mounted on the upper end of the bathtub body 102 and covers the functional portion 110 from above.

The pillow body 12 is mounted on the upper end of the bathtub body 102, for example, in a state of being fitted or engaged with at least one of the bathtub body 102 and the functional unit 110 from above. Thereby, for example, when the bather puts his head on the pillow body 12, it is possible to prevent the pillow body 12 from moving left and right or back and forth. Therefore, the head of the bather can be supported more appropriately.

When removing the bathtub pillow 10 from the bathtub body 102, for example, the pillow body 12 is grasped and a force is applied upward to disengage or disengage the pillow body 12. As a result, the bathtub pillow 10 can be removed from the bathtub body 102.

The opening 14 exposes a part of the functional unit 110 forward. In this example, the opening 14 exposes at least a part of the spout 110a of the functional unit 110 forward. Like the spout 110a, the opening 14 has a slit shape extending in the left-right direction.

The hot water discharged from the functional unit 110 is discharged into the bathtub main body 102 through the water discharge port 110a and the opening 14. That is, the opening 14 is an opening for flowing hot water discharged from the functional unit 110. The bathtub pillow 10 and the functional unit 110 discharge hot water to the neck and shoulders of the bather with his head resting on the pillow body 12. As a result, the relaxation effect can be further enhanced.

The opening 14 is not limited to the opening for flowing hot water. For example, when the functional unit 110 is a lighting unit, the opening 14 is an opening for passing the light emitted from the functional unit 110. The opening 14 may be any opening provided on the front surface of the pillow body 12 and exposing a part of the functional portion 110 to the front.

FIG. 3 is a perspective view schematically showing the bathtub pillow according to the embodiment.
FIG. 4 is a bottom view schematically showing the bathtub pillow according to the embodiment.
FIG. 5 is a cross-sectional view schematically showing the bathtub pillow according to the embodiment.
3 and 4 schematically show a state in which the bathtub pillow 10 is viewed from below. FIG. 5 schematically shows the A1-A2 line cross section of FIG.
As shown in FIGS. 3 to 5, the pillow body 12 of the bathtub pillow 10 includes a support portion 20 and a head rest portion 30.

The support portion 20 is a portion of the pillow body 12 for supporting the load on the head of the bather. The support portion 20 has a pair of side portions 21, 22 and a rear end portion 24. The side portions 21 and 22 extend in the front-rear direction, for example. The side portion 22 is aligned with the side portion 21 in the left-right direction. Further, the side portion 22 is separated from the side portion 21 in the left-right direction. Therefore, a space is provided between the side portion 21 and the side portion 22. The rear end portion 24 extends in the left-right direction and connects the rear ends of the pair of side portions 21 and 22. In other words, the side portions 21 and 22 are portions extending forward from the left and right ends of the rear end portion 24 extending in the left-right direction.

The head resting portion 30 is provided on the support portion 20 and forms an upper surface 32 on which the head of the bather is placed. Further, the head mounting portion 30 covers the upper part of the space between the pair of side portions 21 and 22, so that a storage space 34 for accommodating the functional portion 110 of the bathtub 100 is formed together with the support portion 20. The pillow body 12 stores the functional unit 110 in the storage space 34 in a state of being mounted on the upper end of the bathtub body 102.

The opening 14 is continuous with the storage space 34. In other words, the opening 14 exposes at least a part of the storage space 34 forward. The head mounting portion 30 forms, for example, a storage space 34, and an opening 14 that exposes at least a part of the storage space 34 to the front is formed on the front surface of the pillow body 12.

In this example, the center of the storage space 34 in the left-right direction is substantially the same as the center of the pillow body 12 in the left-right direction. The center of the storage space 34 in the left-right direction may be shifted to the right or left side with respect to the center of the pillow body 12 in the left-right direction.

A resin material such as polyurethane is used for the support portion 20 and the head rest portion 30. The support portion 20 and the head rest portion 30 have elasticity. Further, the hardness of the head rest portion 30 is softer than the hardness of the support portion 20.

The hardness of the support portion 20 is, for example, about 60 degrees in the hardness of the Asker C type. The hardness of the head rest portion 30 is, for example, about 40 degrees in the hardness of the Asker C type. Thereby, the cushioning property when supporting the head of the bather can be obtained by the head resting portion 30, and the load of the head of the bather can be appropriately supported by the support portion 20. For example, as compared with the case where the entire pillow body 12 is made of a soft material, it is possible to suppress the deformation of the storage space 34 when the head of the bather is supported. The hardness of the support portion 20 is not limited to the above, and may be any hardness capable of appropriately supporting the load of the bather's head. The hardness of the head rest portion 30 is not limited to the above, and may be any hardness that can obtain an appropriate cushioning property when supporting the head of the bather.

The connection line 42 on the storage space 34 side representing the outer edge of the connection surface 40 between the rear end portion 24 and the head mounting portion 30 is curved with an inflection point PI. The connection line 42 is, for example, a curved line having a plurality of inflection points PI. Further, at least a part of the connection line 42 on the storage space 34 side extends forward from, for example, the rear end portion 24, and is located above the storage space 34. The support portion 20 has a protruding portion 26 projecting forward from the upper end of the rear end portion 24. The protruding portion 26 is located above the storage space 34 and is in contact with the head mounting portion 30. As a result, as described above, at least a part of the connection line 42 can be positioned above the storage space 34.

At least near the center of the connection line 42 on the storage space 34 side in the left-right direction is located in front of the inflection point PI. The vicinity of the center of the connection line 42 on the storage space 34 side in the left-right direction is located above the storage space 34. In other words, the connection line 42 is located above the storage space 34, at least in the vicinity of the center of the storage space 34 in the left-right direction. The protrusion 26 is provided near the center of the storage space 34 in the left-right direction. At least a part of the protrusion 26 is located at the center of the storage space 34 in the left-right direction. As a result, as described above, at least the vicinity of the center of the connection line 42 on the storage space 34 side in the left-right direction can be positioned in front of the inflection point PI. The vicinity of the center of the connection line 42 on the storage space 34 side in the left-right direction can be positioned above the storage space 34.

Here, the connection line 42 on the storage space 34 side is, for example, a portion of the connection lines 42 appearing on substantially the entire circumference of the pillow body 12 and appearing in the storage space 34. Further, the vicinity of the center of the connection line 42 in the left-right direction is, for example, the central portion of the connection line 42 divided into three in the left-right direction. The vicinity of the center of the connection line 42 in the left-right direction includes at least a range of at least 6 cm, for example, 3 cm from the center in the left-right direction to the right side and 3 cm from the center in the left-right direction to the left side. The same applies to the vicinity of the center of the storage space 34 in the left-right direction as described for the connection line 42.

The connection line 42 on the storage space 34 side has a curved portion 42a that is curved in an arc shape so as to be convex toward the front side. In other words, the front end 26a of the protruding portion 26 is curved in an arc shape so as to be convex toward the front side in a top view. The shape of the front end 26a of the protrusion 26 as viewed from above is, for example, a semicircle.

The apex portion 42b of the curved portion 42a is provided near the center of the connection line 42 on the storage space 34 side in the left-right direction. The apex portion 42b is located, for example, in front of the central CL in the front-rear direction of the storage space 34. Further, the apex portion 42b is located, for example, behind the front end 30a (front end of the pillow body 12) of the head mounting portion 30. That is, the apex portion 42b is provided between the central CL in the front-rear direction of the storage space 34 and the front end 30a of the head mounting portion 30. In other words, at least a part of the front end of the connection line 42 is provided between the central CL in the front-rear direction of the storage space 34 and the front end 30a of the head mounting portion 30. For example, the vicinity of the center of the front end of the connection line 42 is provided between the central CL in the front-rear direction of the storage space 34 and the front end 30a of the head mounting portion 30.

In this example, the rear end 34a of the storage space 34 is curved in an arc shape so as to be convex toward the rear side in the top view. The rear end 34a of the storage space 34 is, in other words, the front end of the rear end portion 24. Therefore, the connection line 42 on the storage space 34 side has a portion (curved portion 42a) curved in an arc shape so as to be convex toward the front side and an arc shape so as to be convex toward the rear side in the top view. It has a curved portion (a portion on both sides of the curved portion 42a). That is, in this example, the connection line 42 on the storage space 34 side has a curved shape having two inflection points PI.

The backrest surface 106 of the bathtub body 102 is curved in an arc shape toward the rear side in a top view, for example, in order to make it easier for the bather to receive the back. In this case, the front edge of the upper end connected to the backrest surface 106 is also curved in an arc shape toward the rear in top view. Therefore, in accordance with these shapes, the front end 30a of the head mounting portion 30 is also curved in an arc shape toward the rear side. As a result, it is possible to prevent an unnecessary step or the like from being generated between the front end 30a of the head resting portion 30 and the backrest surface 106, and it is easier to place the head of the bather on the upper surface 32 of the head resting portion 30. be able to. The rear end 34a of the storage space 34 is curved in an arc shape so as to be convex toward the rear side in the top view, for example, in accordance with the shape of the front end 30a of the head mounting portion 30.

The shape of the rear end 34a of the storage space 34 as viewed from above is not limited to an arc shape, but may be, for example, a straight line extending in the left-right direction. The shape of the rear end 34a of the storage space 34 as viewed from above may be any shape.

When the connection line 42 on the storage space 34 side has a curved shape having two inflection points PI, it is preferable to make the distance between the two inflection points PI as long as possible. In other words, it is preferable that the width of the curved portion 42a in the left-right direction is as long as possible. The left-right distances of the two inflection points PI are, for example, the left-right distance between one inflection point PI and the side portion 21 and the left-right distance between the other inflection point PI and the side portion 22. It is preferably longer than each of the distances. The number of inflection point PIs is not limited to two, and may be three or more.

The shape of the connection line 42 and the shape of the protrusion 26 on the storage space 34 side are not limited to the above, and may be any curved shape having an inflection point PI.

As described above, in the bathtub pillow 10 according to the present embodiment, the bathtub pillow 10 is formed by the hard support portion 20 and the soft head rest portion 30, so that the bather does not impair the cushioning property. It is possible to suppress the deformation of the storage space 34 when the head of the pillow is placed. The connection line 42 on the storage space 34 side has a curved shape having an inflection point PI. As a result, even when the operator grasps the front end 30a of the head mounting portion 30 made of a soft material and applies a force upward to remove the bathtub pillow 10 from the bathtub 100, the head mounting portion 30 It is possible to make it difficult to apply a force based on the "lever principle" to the connection line 42 from the front end 30a of the 30. Therefore, as compared with the case where a connection line extending linearly in the left-right direction is formed, for example, the head mounting portion 30 formed of a soft material with respect to the support portion 20 is greatly bent with the connection line 42 as a base point, and the head is bent. It is possible to prevent a crease from being generated on the upper surface 32 of the mounting portion 30. For example, since the connection line 42 on the storage space 34 side has a curved shape having an inflection point PI, when the head mounting portion 30 is repeatedly bent, the connection line is compared with a linear connection line or the like. It is possible to prevent bending at the same location with 42 as the base point. For example, the bent portion of the head mounting portion 30 can be shifted back and forth. Therefore, even when the head mounting portion 30 is repeatedly bent, it is possible to prevent a large crease from being generated on the upper surface 32 of the head mounting portion 30. As described above, it is possible to provide the bathtub pillow 10 which can suppress the deformation of the internal storage space 34 without impairing the cushioning property and can suppress the occurrence of creases on the upper surface 32.

Further, the bathtub pillow 10 has an opening 14 provided on the front surface of the pillow body 12. In this case, when the bathtub pillow 10 is removed from the bathtub 100, a finger is hung on the opening 14 so that the front end 30a of the head resting portion 30 can be easily grasped. Even in such a case, as described above, by forming the connection line 42 on the storage space 34 side into a curved shape having an inflection point PI, it is possible to suppress the occurrence of a crease on the upper surface 32. ..

Further, in the bathtub pillow 10, at least a part of the connection line 42 on the storage space 34 side is located in front of the central CL in the front-rear direction of the storage space 34. As a result, it is possible to more reliably prevent the head mounting portion 30 from being greatly bent with the connection line 42 as the base point and causing a crease mark on the upper surface 32 of the head mounting portion 30.

Further, in the bathtub pillow 10, the connection line 42 on the storage space 34 side is located behind the front end 30a of the head mounting portion 30. As a result, the decrease in cushioning property can be suppressed more reliably.

Since the vicinity of the center of the head mounting portion 30 in the left-right direction is easier to grip and to apply a force than the end portion in the left-right direction, there is a high possibility that a large force is applied to the head mounting portion 30. Further, when the portion of the front end 30a of the head mounting portion 30 near the center in the left-right direction of the storage space 34 is gripped, the distance of the support portion 20 from the pair of side portions 21 and 22 becomes long, so that the head mounting portion 30 is mounted on the head. Compared with the case where the other portion of the front end 30a of the placement portion 30 is gripped, the force of the "lever principle" is more likely to be applied to the head mounting portion 30. Therefore, as described above, by locating the vicinity of the center of the connection line 42 on the storage space 34 side in the left-right direction in front of the inflection point PI, the portion of the head mounting portion 30 near the center of the storage space 34 can be formed. Even when it is gripped, it is possible to make it difficult for the force based on the "lever principle" with the connection line 42 as the base point to be applied to the head mounting portion 30. As a result, it is possible to more reliably prevent the head mounting portion 30 from being greatly bent with the connection line 42 as the base point and causing a crease mark on the upper surface 32 of the head mounting portion 30.

In the bathtub pillow 10, the connection line 42 on the storage space 34 side has a curved portion 42a curved so as to be convex toward the front side, and the apex portion 42b of the curved portion 42a is connected to the storage space 34 side. It is provided near the center of the line 42 in the left-right direction. As a result, even when a portion near the center of the storage space 34 of the head mounting portion 30 is gripped, a force based on the "lever principle" with the connection line 42 as the base point is applied to the head mounting portion 30. It can be difficult.

Further, by forming the connection line 42 located above the storage space 34 into an arc shape that continuously and smoothly changes, for example, when the connection line 42 has a shape having corners such as a triangle shape or a quadrangular shape. In comparison, the force based on the "triangle principle" with the connection line 42 as the base point can be made less likely to be applied to the head mounting portion 30.

FIG. 6 is a bottom view schematically showing a modified example of the bathtub pillow according to the embodiment.
The same reference numerals are given to those having substantially the same functions and configurations as those of the above-described embodiment, and detailed description thereof will be omitted.
As shown in FIG. 6, in the bathtub pillow 10a, at least a part of the connection line 42 on the storage space 34 side is in front of the virtual line VL connecting the rear ends 21a and 22a of the pair of side portions 21 and 22. positioned. More specifically, the virtual line VL is a virtual line connecting the rear end 21a of the side portion 21 on the storage space 34 side and the rear end 22a of the side portion 22 on the storage space 34 side.

As described above, in the bathtub pillow 10a, at least a part of the connection line 42 on the storage space 34 side is located in front of the virtual line VL. As a result, even when the operator grasps the front end 30a of the head mounting portion 30 made of a soft material and applies a force upward to remove the bathtub pillow 10a from the bathtub 100, the head mounting portion 30a is also mounted on the head. It is possible to make it more difficult to apply a force based on the "lever principle" to the connection line 42 from the front end 30a of the 30.

In the bathtub pillow 10a, a part of the curved portion 42a is located in front of the virtual line VL. The portion of the connection line 42 located in front of the virtual line VL is not limited to the curved portion 42a, and may be any portion.

FIG. 7 is a bottom view schematically showing a modified example of the bathtub pillow according to the embodiment.
As shown in FIG. 7, in the bathtub pillow 10b, at least a part of the connection line 42 on the storage space 34 side has a corrugated shape. The connection line 42 is formed in a corrugated shape at least in the vicinity of the center in the left-right direction. In the bathtub pillow 10b, the connecting line 42 is curved with a plurality of inflection points PI and a plurality of apex portions 42b. In other words, the corrugated shape is a shape having a plurality of arc-shaped protrusions 26 provided side by side in the left-right direction.

As described above, in the bathtub pillow 10b, at least a part of the connecting line 42 has a corrugated shape, that is, a shape having a plurality of inflection points PI and apex portions 42b which are nodes, so that the head mounting portion 30 is greatly bent. It is possible to more reliably prevent a large crease from being generated on the upper surface 32 of the head mounting portion 30 due to the storage. Further, in the corrugated connection line 42, the plurality of apex portions 42b do not line up in a straight line in the left-right direction. As a result, it is possible to more reliably prevent large creases from being generated on the upper surface 32 of the head mounting portion 30. Further, in the corrugated connection line 42, the plurality of vertex portions 42b do not line up on a curve having the same curvature. In other words, the plurality of vertex portions 42b do not line up on the same circumference. As a result, it is possible to more reliably prevent large creases from being generated on the upper surface 32 of the head mounting portion 30.

In this example, the connecting line 42 has five apex portions 42b. The number of the apex portions 42b provided on the connection line 42 is not limited to five, and may be any number of two or more. Further, FIG. 7 illustrates a state in which the respective protrusion amounts of the respective protrusions 26 are relatively small. For example, when at least a part of the connection line 42 has a corrugated shape, each of the plurality of vertex portions 42b may be located in front of the above virtual line VL.

The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. With respect to the above-described embodiment, those skilled in the art with appropriate design changes are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element included in the bathtub pillows 10, 10a, 10b, etc. are not limited to those exemplified, and can be changed as appropriate.
In addition, the elements included in each of the above-described embodiments can be combined as much as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

10, 10a, 10b Bathtub pillow, 12 pillow body, 14 openings, 20 support, 21, 22 side, 24 rear end, 26 protrusion, 30 head rest, 32 top, 34 storage space, 40 connections Surface, 42 connection line, 100 bathtub, 102 bathtub body, 104 inner wall surface, 106 backrest surface, 110 functional part

Claims (5)

A bathtub pillow that is installed in the bathtub and can hold the head of the bather.
A support portion having a pair of side portions and a rear end portion connecting the rear ends of the pair of side portions to support the load of the bather's head.
To accommodate the functional part of the bathtub by being provided on the support part to form an upper surface on which the head of the bather is placed and to cover the upper part of the space between the pair of side parts. A head-mounted portion that forms a storage space together with the support portion,
With
The hardness of the head rest portion is softer than the hardness of the support portion.
A bathtub pillow characterized in that the connection line on the storage space side representing the outer edge of the connection surface between the rear end portion and the head mounting portion is curved with an inflection point. The bathtub pillow according to claim 1, wherein the vicinity of the center of the connection line on the storage space side in the left-right direction is located in front of the inflection point. The connection line on the storage space side has a curved portion curved so as to be convex toward the front side.
The bathtub pillow according to claim 2, wherein the apex portion of the curved portion is provided near the center of the connection line on the storage space side in the left-right direction. The bathtub pillow according to any one of claims 1 to 3, wherein at least a part of the connection line on the storage space side has a corrugated shape. According to any one of claims 1 to 4, at least a part of the connection line on the storage space side is located in front of the virtual line connecting the rear ends of the pair of side portions. The listed bathtub pillows.

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