JPH0122554Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rollable bath lid comprising a plurality of interconnected hollow rods made of hard synthetic resin.

Conventionally, as a product of this kind, Japanese Utility Model Publication No. 59-31958 discloses a unit body in which hollow semicircular dichromatic rods of hard synthetic resin are arranged side by side on a single soft synthetic resin plate and integrally joined together by extrusion molding. However, a bath lid has been proposed in which the side edges of this unit are sequentially polymerized and connected by high frequency welding.

However, in the prior art, a plurality of unitary soft synthetic resin plates are arranged side by side and connected together, so after many years of use, there is a risk that small gaps will form in the connecting parts and heat will escape to the outside. There is. Furthermore, in the conventional technology, since a soft synthetic resin plate is provided, in order to increase the heat insulation effect, the thickness must be increased.
As a result, the weight per unit length increases.

One way to solve such problems is to adhere a foamed synthetic resin sheet to the lower surface of the soft synthetic resin plate as disclosed in Japanese Utility Model Application Publication No. 55-90392, but in such a case, Due to the difference in expansion coefficient between the soft synthetic resin board and the foamed synthetic resin sheet, there is a problem in that when the bath lid is exposed to high temperatures, each sheet may peel off, resulting in a decrease in strength.

The purpose of this invention is to provide a bath lid that can eliminate such conventional drawbacks, and its characteristic structure is that it has a large number of parallel hollow rods made of hard synthetic resin,
Connecting parts made of soft synthetic resin, which are provided between these hollow rods and which connect the ends to the sides of the hollow rods, are integrally formed by two-color molding to form a lid base, and the lower surface of this lid base is foamed. The purpose is to adhere synthetic resin sheets.

Next, an embodiment based on the above characteristics will be described with reference to the accompanying drawings.

A large number of hard synthetic resin hollow rods 1 arranged in parallel as shown in FIGS. 1 to 3, and both sides 1A of the hollow rods 1.
Connecting parts 2 made of relatively thick soft synthetic resin such as vinyl are integrally formed by two-color injection or extrusion molding to form a lid base 3, and a foamed synthetic resin sheet 4 is placed on the bottom surface of this lid base 3. It is made by gluing. 2A is an end portion of the connecting portion 2 connected to the side portion 1A. In that case, as shown in FIGS. 2 and 3, both ends 2A of the connecting portion 2 are connected to the hollow rod 1.
Although it is integrally connected to both sides of the lower surface of the hollow rod 1, it may be integrally connected to both sides of the hollow rod 1. Also the second
As shown in the figure, the foamed synthetic resin sheet 4 may be provided flatly, or as shown in Figure 4, the sheet 4 made of foamed synthetic resin may be provided in a flat manner, or as shown in Fig. 4, streak lines 5 may be formed by heating or cutting at the portion corresponding to the connecting portion 2 to facilitate wrapping. Alternatively, unevenness (not shown) may be provided on the entire surface, or an anti-slip sheet may be adhered. In the figure, 6 is a rib of the hollow rod 1, and 7 is a synthetic resin cap of the hollow rod 1. The above-mentioned two-color molding means that two sets of injection devices or extruders are provided to inject or extrude two colors or two types of molding materials simultaneously or sequentially.

Note that the foamed synthetic resin sheet uses a foamed plastic with a closed-cell structure (cells completely separated by a membrane), and open-celled foamed plastic (a structure in which the cells are continuous) is not suitable. It is. That is, the former has a property of not being water absorbent.

Since this invention is as described above, the hollow rods 1 made of hard synthetic resin and the joints made of soft synthetic resin are provided between these hollow rods 1 and connect the end portions 2A to the side portions 1A of the hollow rods 1, respectively. The lid base 3 consisting of the portion 2 can be integrally formed at the same time by two-color injection molding or extrusion molding. Therefore, a roll-shaped elongated product of the lid base 3 and a roll-shaped elongated product of the foamed synthetic resin sheet 4 are prepared. Then, as shown in Fig. 5, by pulling out the two parts, overlapping them, and gluing them together, a continuous roll-shaped long product can be obtained, which can be cut to the desired length. The bottom surface of the lid, that is, the one-piece foamed synthetic resin sheet 4 has no seams, so steam does not leak to the outside. In addition, since a foamed synthetic resin sheet 4 is adhered to the lid base 3, which is integrally formed by two-color injection or extrusion molding, when used to cover a bathtub, the heat of hot water and steam is absorbed by scattered air spaces. Since it is blocked by the foamed synthetic resin sheet 4, it has excellent heat retention and is lightweight, making it easy to handle.

Furthermore, the universal characteristic of synthetic resins is that they easily soften when heated and their mechanical strength decreases;
This design is heat-insulated by the foamed synthetic resin sheet 4, so the hollow rod 1 is not affected by temperature, and its mechanical strength such as bending is difficult to change, so the initial strength is maintained, making foam foam safer as a bath lid. The size is significantly larger than that of an exposed hard rod without the synthetic resin sheet 4, and there is no fear of burns to young children.

Moreover, as a means for connecting the hollow rods 1 made of hard synthetic resin, the ends 2 of the connecting parts 2 made of soft synthetic resin are used.
By connecting A to the side part 1A of the hollow rod 1, that is, by setting the length of the connecting part 2 made of soft synthetic resin with a large coefficient of thermal expansion short, the thermal expansion length can be made small. Therefore, when the connecting portion 2 and the hollow rod 1 are integrated with the foamed synthetic resin sheet 4, a sturdy bath lid can be provided without warping or peeling.

Furthermore, the foamed synthetic resin sheet 4 provides excellent cushioning properties, and can compensate for the tendency of the hollow rod 1 to be damaged due to impact with the edge of the melting tank. Furthermore, if a silver emitting surface is formed on the lower surface of the foamed synthetic resin sheet 4 by vacuum vapor deposition of aluminum, etc., it will reflect the radiant heat generated from the surface of the hot water and prevent heat radiation, and a good heat retention effect can be expected.

As described above, this invention consists of a large number of parallel hollow rods made of hard synthetic resin, and connecting parts made of soft synthetic resin that are provided between these hollow rods and connect the ends to the sides of the hollow rods. The lid is integrally formed by molding to form the lid base, and a foamed synthetic resin sheet is adhered to the underside of the lid base, making it possible to efficiently create a rollable bath lid with multiple hollow rods made of hard synthetic resin. This means that it can be mass-produced, maintains good winding functionality and heat retention over a long period of time, and is durable and will not warp or peel even after long-term use, even after repeated high-temperature conditions. can be provided.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway perspective view seen from the bottom side, Fig. 3 is an enlarged cross-sectional view of the main part, Fig. 4 is a perspective view showing another embodiment, and Fig. 5 is a perspective view of another embodiment. It is an explanatory diagram showing a production state. 1...Hollow rod made of hard synthetic resin, 1A...Side part,
2... Soft synthetic resin connecting part, 2A... End part, 3
... Lid base, 4... Foamed synthetic resin sheet.

Claims (1)

[Scope of utility model registration request] A large number of parallel hollow rods made of hard synthetic resin and connecting parts made of soft synthetic resin installed between these hollow rods and connecting the ends to the sides of the hollow rods are integrally formed by two-color molding. A bath lid characterized by having a lid base and a foamed synthetic resin sheet adhered to the lower surface of the lid base.