JP6175853B2 - Bath lid - Google Patents

Description

  The present invention relates to a bath lid that is placed on a rim of a bathtub and covers the bathtub.

  The flat bath lid is less likely to warp with heat in order to enhance heat retention, mainly a core material made of a heat insulating material such as foamed resin, and a decorative board made of hard resin that covers the front and back surfaces of the core material The reinforcing surface material is sandwiched between the core material and the decorative plate so as not to warp the bath lid, and the edge material (edge protector) covering the periphery of the core material.

  For example, Patent Literature 1 discloses a bath lid in which stretched olefin resin sheets are laminated on both surfaces of a resin foam as a reinforcing material, and a polypropylene resin plate is further laminated.

JP 2006-130243 A

Conventionally, the strength to prevent the bath lid from warping due to the temperature difference between the inside of the bathtub and the inside of the bathroom (outside of the bathtub) relied on the decorative board and the reinforcing material. Since it is the same size (area) as the back surface, it becomes an obstacle to weight reduction of the bath lid. Further, if reinforcing members are stacked on the front and back surfaces of the core material, the number of manufacturing steps increases.
It is an object of the present invention to provide a bath lid that is lightweight and has a high heat retention capability.

In order to solve the above-mentioned problems, the inventors have intensively studied and found that a large gap between the bath lid and the rim of the bath tub does not warp even if the bath lid warps. The knowledge that it was not possible was acquired.
The present invention based on such knowledge is a bath lid that is used on a rim of a bathtub, and is molded from a foamed resin having a compression set of 20% or less, and the bathtub is covered with the lid. Then, a body part that warps due to a temperature difference between the inside and outside of the bathtub, and a regulation that is provided at a peripheral edge of the body part so that the warp of the body part does not reach the peripheral edge of the body part. Means.

According to this, since the main body portion is made of a foamed resin having a compression set of 20% or less, it does not undergo plastic deformation or breakage with respect to external force applied to the bath lid during use, but only elastically deforms. For this reason, even if the main body is temporarily deformed by an external force, the main body immediately returns to its original state, and the bath lid does not remain locally depressed or greatly deformed. In addition, the main body part is molded from a foamed resin with a compression set of 20% or less, and the front and back of the main body part is not covered with a hard plastic decorative plate so that it does not warp with a conventional bath lid. It is lighter than that.
And even if the main-body part of a bath lid warps by the temperature difference inside and outside a bathtub, it is controlled so that curvature may not reach the peripheral part of a bath lid. Therefore, even if the hot water of the bathtub W becomes hot with the bathtub covered with a lightweight bath lid, the bath lid warps due to the temperature difference, but due to the warpage, a large gap is formed between the bath lid and the bathtub. Therefore, it is difficult for the temperature in the bathtub to escape to the outside, and a bath lid with excellent heat retention can be provided.

In the present invention, the restricting means, it is also preferable that the a reinforcement configured to have a greater flexural strength than the body portion.

  According to this, since the reinforcing material that exerts a bending strength greater than that of the main body is provided at the peripheral edge of the main body, the warping of the main body is restricted so as not to reach the peripheral edge of the main body. be able to.

  Moreover, in this invention, the said main-body part has a mounting part mounted on the rim | limb of the said bathtub, and the center part enclosed by the said mounting part, The said reinforcing material is in the said mounting part. It is also preferable to be provided.

  According to this, since the reinforcing material is provided on the mounting portion placed on the rim of the bathtub, the temperature in the bathtub is not easily transmitted to the reinforcing material. Therefore, even if the main body warps due to a temperature difference between the inside and outside of the bathtub, the reinforcing material does not warp. Therefore, it can regulate so that it may not reach the peripheral part of a main-body part.

  Moreover, in this invention, it is also preferable that the said main-body part forms the step part engaged with the opening edge part of the said bathtub in the boundary part of the said mounting part and a center part.

  According to this, the step part formed in the back surface of a bath lid is comprised so that it may correspond with the opening edge part of a bathtub. Since the reinforcing material is provided on the mounting portion outside the stepped portion, it is possible to prevent the bath lid from being placed so that the reinforcing material is directly above the hot water W of the bathtub.

  ADVANTAGE OF THE INVENTION According to this invention, even if a temperature difference arises in and out of a bathtub, it becomes possible to provide the bath lid provided with the light weight and the high heat retention capacity which does not make a big clearance gap between a bath lid and a bathtub.

It is typical sectional drawing which shows the state which mounted the bath lid of 1st Embodiment of this invention on the bathtub. It is typical sectional drawing which shows the state which mounted the bath lid of 2nd Embodiment of this invention on the bathtub. It is typical sectional drawing which shows the state which mounted the bath lid of the 3rd Embodiment of this invention on the bathtub. It is typical sectional drawing which shows the state which mounted the bath lid of the 4th Embodiment of this invention on the bathtub. It is a schematic diagram which shows the manufacturing method of the bath lid of 2nd Embodiment. It is a schematic diagram which shows another manufacturing method of the bath lid of 2nd Embodiment. It is a schematic diagram which shows another manufacturing method of the bath lid of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same constituent elements are denoted by the same reference numerals as much as possible, and redundant description is omitted.

Drawing 1 is a typical sectional view showing the state where the bath lid of a 1st embodiment of the present invention was put on a bathtub.
As shown in FIG. 1, the bath lid 100 is used so as to cover the tub 500 on the rim 510 of the bathtub 500. The bath lid 100 includes a main body 110 and an edge member 120 surrounding the side peripheral surface 116 of the main body 110, and has a substantially rectangular shape in plan view.

  The main body 110 includes a central part 111 that covers the bathtub 500 and covers the bathtub 500, and a peripheral edge 115 that surrounds the central part, and the lower surface of the peripheral edge 115 is the rim of the bathtub 500. The mounting portion 112 that can be placed on 510 is used.

  The main body 110 has a thin plate shape obtained by molding a foamed resin that has heat insulation properties and elastically deforms when an external force is applied. This foamed resin is made of a foamed resin having a compression set of 20% or less calculated by a measurement method defined in JIS K6767. The compression set is a strain that remains in a material when a load is applied to the material and then the load is removed.

Examples of the foamed resin having a compression set of 20% or less include polyolefin resins such as polypropylene, polyethylene, and ethylene vinyl acetate copolymer, flexible urethane foam, and polystyrene-polyolefin composite resin foam. For example, the compression set of polypropylene (EPP) foamed with beads at 30 to 60 magnifications is about 8% to 11%.
On the other hand, examples of the foamed resin having a compression set exceeding 20% include rigid urethane foam, polystyrene-based resin foamed by extrusion foaming or foaming bead method. For example, the compression set of polystyrene (EPS) foamed with beads at 30 to 60 times is about 21% to 24%. When the main body part 110 is molded with a foamed resin having a compression set exceeding 20%, the dent generated in the main body part 110 does not return to the original, and irregularities occur on the front and back surfaces of the bath lid 1. Not suitable.

  The main body 110 is formed by, for example, a foam bead method. Specifically, gas (for example, hydrocarbon gas) is absorbed into a fine material resin (beads), and the resin is softened at high temperature and foamed by applying pressure.

  And the surface of the main-body part 110 becomes the decorative surface 113 formed by embossing which gives a fine pattern (unevenness | corrugation) to the surface of a metal mold | die, for example, and transfers the pattern to a molded article.

  The main body 110 is formed by applying a grain having a size smaller than the particle diameter of the individual foam beads on the surface of the main body 110 where the foam bead pattern is exposed by the foam bead method.

  Since the size of the wrinkles is made smaller than the particle diameter of each foamed bead, the foamed bead pattern cannot be seen from the surface of the main body 110, and a high-quality appearance can be given to the appearance of the bath lid 100. In addition, the touch of the surface of the bath lid 100 can be improved, slipping can be prevented, and dirt, fingerprints and scratches can be made inconspicuous. Moreover, the decorative surface 113 has non-water permeability.

  Note that the decorative surface 113 may be formed with a skin layer on the surface side of the main body 110, instead of applying a texture. This skin layer is a layer having a high density on the surface of the molded product that is generated when the foamed resin is molded. That is, the skin layer has a higher density than a portion (for example, a central portion in the thickness direction) between the front surface and the back surface of the main body 110.

  The edge member 120 covers the side peripheral surface 116 that is the outer side surface of the peripheral edge 115 of the main body 110. The edge member 120 continuously surrounds the side peripheral surface 116 of the main body 110 along the side peripheral surface 116 of the main body 110. That is, the side peripheral surface 116 of the main body 110 is covered with the edge member 120 and is not exposed to the outside.

  The rim member 120 exhibits a bending stress larger than that of the main body 110 with respect to a stress that tends to warp the main body 110 due to a temperature difference between the inside of the bathtub and the inside of the bathroom (outside of the bathtub). The main body 110 is supported (reinforced) so that the peripheral edge 115 of the main body 110 placed on the upper surface of the main body 110 does not warp. That is, the edge member 120 serves as a restricting unit that reinforces the main body 110 and restricts the warping of the peripheral edge 115 so that the warpage of the main body 110 does not reach the peripheral edge 115 of the main body 110. Even if the center portion 111 of the main body 110 is warped, the bath lid 100 is hardly warped because the edge member 120 does not warp the placement portion 112.

  The edge member 120 may use a synthetic resin member called a so-called edge protector. However, in order to reduce the weight of the bath lid 100, for example, a strip-shaped stretch made of a polyolefin-based resin such as polypropylene or polyethylene is used. A resin band is preferred. The stretched resin band stretches as long as it can be stretched in the longitudinal direction in a certain temperature range, and has a characteristic that it is difficult to stretch in a temperature range during normal use that is lower than that temperature range.

  According to the bath lid 100 of the first embodiment, the edge member 120 that exhibits a higher bending strength than the main body 110 is provided on the peripheral edge 115 of the main body 110 made of foamed resin. Therefore, when the bath lid 100 is covered with the hot water W stored in the bathtub 500, the temperature difference between the inside of the bathtub and the inside of the bathroom (outside of the bathtub) causes the stress that the bath lid 100 warps in a concave shape. Even if the portion 110 is warped, the edge member 120 supports the main body portion 110 so that the placement portion 112 of the main body portion 110 placed on the upper surface of the rim 510 of the bathtub 500 does not warp. Therefore, the warping of the main body 110 is regulated so as not to reach the mounting portion 112, and the mounting portion 112 is hardly warped. Therefore, the clearance gap produced between the bath lid 100 and the rim (bath lid mounting surface) of the bathtub 500 can be suppressed, and a high heat retaining ability can be exhibited.

  In addition, since the warpage is restricted by the edge member 120 disposed only on the peripheral edge 115 of the main body 110, a hard resin decorative plate or reinforcing member having the same area as the front and rear surfaces of the main body 110 is provided. Compared to the structure of a conventional bath lid provided with a bath lid 100, the bath lid 100 can be significantly reduced in weight, and can be lifted by one hand for an adult, improving handling properties when carrying it.

  Furthermore, since the main body 110 is made of a foamed resin having a compression set of 20% or less, it does not undergo plastic deformation or breakage with respect to an external force applied to the bath lid during use, but only elastically deforms. For this reason, even if the main body 110 is temporarily deformed by an external force, it immediately returns to its original state, and the bath lid 100 is not left locally depressed or greatly deformed.

  Moreover, the bath cap 100 can be further reduced in weight by making the edge material 120 into a thin strip-shaped stretched resin band.

Next, the bath lid of 2nd Embodiment of this invention is demonstrated.
FIG. 2 is a schematic cross-sectional view showing a state in which the bath lid 100 </ b> A of the second embodiment is placed on the bathtub 500.

  Unlike the bath lid 100A of the first embodiment described above, the bath lid 100A differs from the bath lid 100A of the first embodiment described above in that the warping of the main body portion 110A does not reach the peripheral edge portion 115A of the main body portion 110A. The configuration is substantially the same.

In the bath lid 100A, an aggregate 130A is incorporated as a reinforcing material inside the peripheral edge 115A of the main body 110A.
The aggregate 130A is built in the vicinity of the inside of the side peripheral surface 116A of the main body 110A. The aggregate 130A is continuous along the side peripheral surface 116A of the main body 110A.

  Aggregate 130A is formed by assembling, for example, a bar material in which a relatively lightweight metal such as an aluminum material is formed into a square rectangular tube-like cross section in accordance with the planar shape of bath lid 100A.

  The aggregate 130A is built in the main body 110A so that the bar faces the side peripheral surface 116A in parallel with the inner side 116A of the main body 110A.

  The aggregate 130A is provided continuously along the side peripheral surface 116A of the main body 110A, and the main body 110A is subjected to stress that tends to warp the main body 110A due to a temperature difference between the inside of the bathtub and the inside of the bathroom (outside the bathtub). The main body 110 </ b> A is supported (reinforced) by exerting a bending strength larger than that of the section 110 </ b> A so that the peripheral edge 115 </ b> A of the main body 110 </ b> A placed on the rim 510 of the bathtub 500 does not warp. ing).

  Also according to the second embodiment, it is possible to achieve the same effect as the bath lid 100 of the first embodiment described above.

Next, a bath lid according to a third embodiment of the present invention will be described.
FIG. 3 is a schematic cross-sectional view showing a state in which the bath lid 100 </ b> B of the third embodiment is placed on the bathtub 500.

  In the bath lid 100B, the aggregate 130B as a reinforcing material incorporated in the peripheral edge portion 115B of the main body 110B is a strip-shaped stretched resin band made of polyolefin resin such as polypropylene or polyethylene. The stretched resin band stretches as long as it can be stretched in the longitudinal direction in a certain temperature range, and has a characteristic that it is difficult to stretch in a temperature range during normal use that is lower than that temperature range.

  The aggregate 130B is built in the main body 110B so that the plane of the band faces the side peripheral surface 116B in parallel with the inner side of the side peripheral surface 116B of the main body 110B.

  Similar to the bath lid 100A of the second embodiment described above, the aggregate 130B is provided continuously along the side peripheral surface 116B of the main body 110A, and due to a temperature difference between the inside of the bathtub and the inside of the bathroom (outside the bathtub). The peripheral edge portion 115B of the main body 110B placed on the rim 510 of the bathtub 500 exhibits a bending strength larger than that of the main body 110B against the stress that tends to warp the main body 110B. The main body 110B is supported (reinforced) so as not to warp.

  Also according to the third embodiment, it is possible to achieve the same effect as the bath lids 100 and 100A of the first and second embodiments described above.

Next, the bath lid of 4th Embodiment of this invention is demonstrated.
FIG. 4 is a schematic cross-sectional view showing a state where the bath lid 100 </ b> C of the fourth embodiment is placed on the bathtub 500.

The bath lid 100C includes a main body 110C, a skin material 140C that covers the front and back surfaces of the main body 110C, and an edge member 120C that surrounds the periphery of the main body 110C, and has a substantially rectangular shape in plan view.
The main body 110 </ b> C includes a central portion 111 </ b> C that covers the bathtub 500 and covers the bathtub 500, and a peripheral edge 115 </ b> C that surrounds the central portion, and the lower surface of the peripheral edge 115 </ b> C is the rim of the bathtub 500. The mounting portion 112 </ b> C can be placed on the 510.

  The main body 110C is made of a foamed resin having heat insulation properties. More specifically, the main body 110C is made of a foamed resin having a compression set of 20% or less calculated by a measurement method defined in JIS K6767. The compression set is a strain that remains in a material when a load is applied to the material and then the load is removed.

Examples of the foamed resin having a compression set of 20% or less include polyolefin resins such as polypropylene, polyethylene, and ethylene vinyl acetate copolymer, flexible urethane foam, and polystyrene-polyolefin composite resin foam. For example, the compression set of polypropylene (EPP) foamed with beads at 30 to 60 magnifications is about 8% to 11%.
On the other hand, examples of the foamed resin having a compression set exceeding 20% include rigid urethane foam, polystyrene-based resin foamed by extrusion foaming or foaming bead method. For example, the compression set of polystyrene (EPS) foamed with beads at 30 to 60 times is about 21% to 24%. When the main body part 110C is molded with a foamed resin having a compression set exceeding 20%, the dent generated in the main body part 110C does not return to its original shape, and irregularities are generated on the front and back surfaces of the bath lid 1. Not suitable.

  The main body 110C is formed by, for example, a foam bead method. Specifically, gas (for example, hydrocarbon gas) is absorbed into a fine material resin, and the resin is softened at high temperature and foamed by applying pressure.

  When the skin material 140C provided on the front and back surfaces of the main body 110C is placed on the rim 510 of the bathtub 500, the lower surface skin material 140Ca facing the bathtub 500 and the lower surface skin material 140Ca are opposed to the bathtub 500. And an upper surface side skin material 140Cb provided on the opposite side. The lower surface skin material 140Ca and the upper surface skin material 140Cb are thinner than the main body portion 110C, and are made of, for example, a polyolefin-based resin sheet or resin film such as polypropylene or polyethylene, and have elasticity enough to elastically deform when external force is applied. Have.

  The edge member 120C covers the side peripheral surface 116C of the main body 110C. The edge member 120C continuously surrounds the side peripheral surface 116C of the main body portion 110C along the side peripheral surface 116C of the main body portion 110C, and the side peripheral surface 116C of the main body portion 110C is covered with the edge material 120C. Not exposed to the outside.

  The rim member 120C exhibits a bending stress larger than that of the main body 110C with respect to the stress that tends to warp the main body 110C due to a temperature difference between the inside of the bathtub and the inside of the bathroom (outside of the bathtub). The main body 110C is supported (reinforced) so that the peripheral edge portion 115C of the main body 110C placed on the substrate does not warp. That is, the edge member 120C serves as a restricting means for restricting the warpage of the main body 110C from reaching the peripheral edge 115C of the main body 110C. Even if the center portion 111C of the main body portion 110C is warped, the bath lid 100C does not warp the placement portion 112C by the edge material 120C, and the placement portion 112C hardly warps.

  The edge member 120C may use a synthetic resin member called a so-called edge protector. However, in order to reduce the weight of the bath lid 100C, for example, a strip-like stretch made of a polyolefin-based resin such as polypropylene or polyethylene is used. A resin band is preferred. The stretched resin band stretches as long as it can be stretched in the longitudinal direction in a certain temperature range, and has a characteristic that it is difficult to stretch in a temperature range during normal use that is lower than that temperature range.

  A step portion 150C that can be engaged with the inner edge (opening edge portion) 500a of the bathtub 500 is formed around the periphery (periphery) of the bath lid 100C. The step portion 150C is formed such that the bottom surface of the mounting portion 112C of the bath lid 100C placed on the rim 510 of the bathtub 500 is higher than the bottom surface of the central portion 111C. The bottom surface of the step portion 150C is retreated upward (from the upper surface side skin material 140Cb side) from the bottom surface of the central portion 111C of the bath lid 100C. Therefore, when the bath lid 100C is placed on the rim 510 of the bathtub 500, the central portion 111C of the bath lid 100C is disposed below the upper surface of the rim 510 of the bathtub 500, that is, in the bathtub 500. The bath lid 100C according to the present embodiment can be referred to as, for example, a “semi-drop-down bath lid”.

  Also according to the fourth embodiment, it is possible to achieve the same effect as the bath lids 100 and 100A of the first and second embodiments described above.

  Furthermore, in the bath lid 100C of the fourth embodiment, a step portion 150C that engages with the opening edge portion 500a of the bathtub 500 is provided, and the edge member 120C that serves as a reinforcing material is placed outside the step portion 150C. Provided in the section 112C. For this reason, since the mounting part 112C of the bath lid 100C cannot be placed so as to be positioned on the inner side of the opening edge 500a of the bathtub, the reinforcing material (the edge material 120C) is directly above the hot water W of the bathtub 500. It is possible to prevent the bath lid 100C from being placed on the wall, and to prevent the reinforcing material itself from warping due to a temperature difference between the inside and outside of the bathtub.

Next, a method for manufacturing the bath lid 100A having the decorative surface 113A on the surface of the main body 110A shown as the second embodiment will be described.
This bath lid 100A can be manufactured, for example, by a bead foaming method.

  As shown in FIG. 5A, an aggregate 130 </ b> A (reinforcing material) is built in a mold (upper mold) 310 and a mold (lower mold) 320. The aggregate 130 </ b> A is supported by the jig 330 in the molds 310 and 320. On the inner surface of the mold 310 and the inner surface of the mold 320, minute unevenness for transferring the embossing to the molded product is formed.

  Next, as shown in FIG. 5B, resin fine beads 110p, which are the material of the main body 110A, are injected into the molds 310 and 320 and foamed.

  When the molded product is taken out from the molds 310 and 320, as shown in FIG. 5C, a molded product in which the aggregate 130A is incorporated in the main body 110A made of foamed resin is obtained.

  Next, another method for manufacturing the bath lid 110A of the second embodiment will be described with reference to FIGS. 6 (a) to 7 (b).

  FIG. 6A shows two foamed resin molded plates (raw fabric) 110Aa and 110Ab having a skin layer formed on the surface, and an aggregate (reinforcing material) 130A. First, the foamed resin molded plates 110Aa and 110Ab are softened by heating in an oven or the like.

  Then, as shown in FIG. 6 (b), the aggregate 130A is sandwiched between the two foamed resin molded plates 110Aa and 110Ab, placed in a cooled mold, and pressed.

  After this molding, by cutting the edge (burr) 114A shown in FIG. 7A, a molded product in which the aggregate 130A is built in the main body 110A made of foamed resin as shown in FIG. 7B is obtained. can get.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. In addition, the planes and the elements included in each of the above-described embodiments can be combined as long as technically possible, and combinations thereof are included in the scope of the present invention as long as they include the features of the present invention. .

100, 100A, 100B, 100C Bath lid 110, 110A, 110B, 110C Main body part 111, 111A, 111B, 111C Central part 112, 112A, 112B, 112C Placement part 115, 115A, 115B, 115C Peripheral edge part 120, 120C Edge material (reinforcing material)
130A, 130B Aggregate (reinforcing material)
140C Skin material 150C Step 500 Bathtub 500a Opening edge 510 Rim

Claims (4)

A bath lid used on the rim of a bathtub,
Compression set is molded from less than 20% of the foamed resin, a main body warped by temperature difference between the inside and the outside of the tub and the lid to the tub,
A regulating means that is provided at a peripheral edge of the main body and restricts the warping of the main body from reaching the peripheral edge of the main body;
A bath lid characterized by comprising: The bath lid according to claim 1 , wherein the restricting means is a reinforcing member configured to have a bending strength larger than that of the main body. The main body has a placement part placed on the rim of the bathtub, and a central part surrounded by the placement part,
The bath lid according to claim 2, wherein the reinforcing material is provided in the mounting portion.   The bath lid according to claim 3, wherein the main body portion is formed with a stepped portion that engages with an opening edge portion of the bathtub at a boundary portion between the placement portion and the central portion.

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