JP2571453Y2 - Bathtub handle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle attached to a side wall of a bathtub.

[0002]

2. Description of the Related Art In recent years, even a residential bath to which various functions such as a jet bath and a bubble bath are added for the purpose of a massage effect or the like is becoming widespread.

The bathtub of such a multifunctional bath has a relatively shallow tub depth and a slightly inclined rear side wall so that a bather can enjoy bathing slowly and relaxedly. As a shape, there is a type in which a bather can take a bath in a so-called reclining posture in which the body is extended comfortably.

In this type of bathtub, taking into account that the bather can easily perform an operation such as when standing up from a bathing position, for example, as shown in FIG. Each has a handle 11 attached thereto.

[0005]

The handle 11 for the bathtub described above is generally made of metal, but this metal handle gives a cold feeling when touched during bathing. There is a problem in use such as the use of a resin, and in order to solve this problem, a handle of a resin molded product has recently been used.

However, according to the handle made of resin, since there is a problem peculiar to resin molding, that is, sinkage due to curing shrinkage or the like, appearance quality is inferior to that of a metal handle. The handle is chrome-plated on the outer surface to give the same high-quality feel as a metal handle. However, there is a disadvantage that the plating is easily peeled off.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a resin-made bathtub handle having the same appearance quality and luxury as a metal-made one.

[0008]

In order to achieve the above object, a bathtub handle according to the present invention is provided with a bolt 3 for mounting on a side wall 10a of the bathtub as shown in FIGS.
And an internal structure 1 made of a resin, which has been subjected to either insert molding or formation of a female screw for mounting, and a resin product formed uniformly on the surface of the structure 1 with a predetermined thickness. Is characterized by being constituted by the surface layer 2.

[0009]

The uniform thickness of the decorative surface layer 2 formed on the outer surface of the internal structure 1, which is the basic component of the handle, allows local hardening during the formation of the surface layer. Shrinkage is eliminated, thereby preventing sink marks from occurring on the product surface of the handle.

[0010]

FIG. 1 is a structural view of an embodiment of the present invention, showing a horizontal sectional view, a rear view, and a bottom view.

The outer dimensions of the handle are, for example, 90 mm.times.60 mm.times.60 mm in the maximum dimension in the vertical, horizontal and thickness directions, and the internal structure 1 constituting the basic part is excellent in strength such as ABS resin. It is a resin molded product molded with resin.

In the internal structure 1, bolts (made of metal) 3 for mounting on a bathtub are insert-molded at two places on the back side, and a surface layer 2 for decoration is formed on the outer surface. It is molded with a suitable thickness. The surface layer 2 is a resin layer formed of a resin having excellent heat resistance such as a polyphenylene ether resin, and has a thickness of, for example, 20 mm.

As shown in FIG. 2, the handle having the above-described structure is mounted on the inside of the side wall 10a of the bath tub, and the handle is mounted on the outside of the side wall 10a of the mounting bolt 3, as shown in FIG. Instead, the whole handle is fixed to the bathtub side wall 10a by tightening the nut 12 at each end. Note that a watertight packing 13 is sandwiched between the bathtub side wall 10a and the handle.

Next, the manufacturing procedure of the embodiment of the present invention will be described. First, the internal structure 1 is molded so that its outer dimensions are uniformly reduced by the thickness (20 mm) of the surface layer 2 from the final product shape. When the internal structure 1 is formed, the cavity 4 for inserting and arranging the resin injection gate G in the next surface layer forming step is opened together with the insert molding of the bolt 3.

Next, the internal structure 1 having been formed as described above is placed in a surface layer forming die (not shown). In this mold, a part of the inner surface of the cavity is formed by the outer surface of the structure 1 arranged inside in a mold-clamped state, and the resin injection gate G is inserted and arranged in the cavity 4 of the structure 1. Then, in such a mold clamping state, the surface layer 2 is formed by injecting a molten resin (polyphenylene ether resin) into the mold cavity through the gate G. At this time, the surface portion of the internal structure 1 melts into the surface layer 2 side due to the heat of the injected molten resin, and thereby both are firmly integrated. Also, the structure 1
Even if there is a sink on the surface of the surface layer 2, the influence of the sink does not reach the outer surface of the surface layer 2. In addition, since the injected resin has a uniform thickness throughout, there is no local shrinkage upon curing, ie, no sink marks on the product surface.

After the above-described molding is completed, the surface of the product (the outer surface of the surface layer 2) is plated with chromium so as to have the same texture and quality as a metal handle. According to this example, since the bolt 3 formed by insert molding is made of metal, there is an advantage that the bolt 3 can be used as an electrode during plating.

Here, in the above embodiment, the surface layer 2 is
Although it is 0 mm thick, it is not limited to this,
The thickness of the surface layer is optional, and can be increased or decreased according to the type of resin used and the outer dimensions of the handle. However, when the thickness is reduced, it is preferable to secure a thickness of about 3 mm in view of prevention of sink marks and smoothness of the surface. Even when the surface layer is thinned, the basic structure of the internal structure is the same as that of the previous embodiment. That is, as shown in FIG. 3, the insert bolt 33 and the surface layer 3
Keep the cavity 34 is provided and structure for inserting placing the resin injection gate G ₃ during molding 2.

It should be noted that the present invention can of course be carried out by using a structure having a female thread for mounting in place of the internal structure having bolts for mounting to a bathtub formed by insert molding. It is.

[0019]

As described above, according to the handle of the present invention, the resin having the two-layer structure of the internal structure on which the mounting bolt 3 is insert-molded and the surface layer covering the outer surface thereof are provided. Since it is a molded product, the product surface has a smooth surface without sink marks, and the appearance quality is not inferior to metal products. Further, the adhesiveness of chrome plating or the like is good, so that the same texture and high quality as those of metal can be obtained.

[Brief description of the drawings]

FIG. 1 is a structural diagram of an embodiment of the present invention, showing a horizontal sectional view, a rear view, and a bottom view.

FIG. 2 is a diagram showing a use state of the embodiment of the present invention.

FIG. 3 is a horizontal sectional view showing the structure of another embodiment of the present invention.

FIG. 4 is a perspective view showing the appearance of a bathtub to which a handle is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Internal structure 2 Surface layer 3 Mounting bolt 10 Bathtub 10a Side wall 11 Handle

Claims (1)

(57) [Scope of request for utility model registration] 1. A handle attached to an inner surface of a side wall of a bathtub, wherein the handle is formed by insert molding of a mounting bolt or forming a female screw for mounting on a side wall of the bathtub. A handle for a bathtub, comprising: a structure; and a resin surface layer uniformly formed on the surface of the structure with a predetermined thickness.