JPS6031527Y2 - Waterproof material for footwear with fasteners - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a water-repellent material for footwear with a zipper, and more specifically to a material for footwear such as boots and short boots having a zipper in the curved front flap.

(B) Prior Art Among footwear such as boots and short boots molded from conventional synthetic resin by slush molding or injection molding, footwear having a zipper in the front flap has a flat front flap 6 as shown in FIG. On the other hand, for those with a curved front flap 6, the zipper 3 was provided on the side of the footwear as shown in Figure 2, or on the rear of the footwear (Utility Model No. 54-13744).
(See Figure 2 of Publication No. 1).

In other words, in the conventional water and land construction as shown in Fig. 3, when the fastener cloth for attaching the material is high-frequency welded to the fastener attachment part formed on the body of the webbing material, it is easy to expose the front flap or flat surface where the fastener attachment part is made of a flat surface. When it was formed on the side of footwear, etc., it was possible to easily fuse it.

(c) Problems that the invention aims to solve However, footwear with a flat front lace has the disadvantage that it is difficult to walk because the shape of the lace is curved, and also there are no zippers on the sides or rear of the footwear. However, depending on the location where the zipper is installed, the zipper may be easily damaged or may be subject to design restrictions.

For this reason, attempts have been made to produce footwear such as boots that have a zipper on the curved front flap.

However, as shown in Figure 3, the conventional water and land materials
, 2' are straight lines, so when the fastener cloth is attached to the front hem of the curved weave main body, a part of the fastener becomes wavy and meandering, resulting in an inferior product quality.

Furthermore, the design of shoes is also subject to restrictions.

2) Means to solve the problem This invention was made by fixing the zipper cloth on both sides of the zipper to the side of the material. It is an object of the present invention to provide a waterproof material for footwear with a zipper, which is characterized by a concave curve, thereby eliminating the problems of the prior art.

(e) Function The fastener cloth on both sides of the fastener is fixed to the side portion of the material with its side edges curved inward and formed by a concave curve.

Then, the zipper surface takes on the shape of a curved surface.

(f) Example FIG. 6 shows an example of this invention, FIG. 4 shows a parts diagram,
The manufacturing process of this embodiment will be explained with reference to FIGS. 7 to 9, which show the manufacturing process.

1 is a material with drainage material, which is approximately fan-shaped as a whole with side edges 2
, 2' each consist of a concave curve.

The water and land material 1 is made of synthetic resin such as a vinyl sheet, and a cold protection material such as a boa may be attached to the back side.

The sides f & 2t 2' of the water and land material 1 are sewn to the edges of the zipper cloth 4 made of woven cloth formed on both sides of the zipper 3.

Then, as shown in FIG. 6, the zipper-equipped footwear material is curved on three sides of the zipper.

The degree of curvature of the fastener surface can be freely selected for water and land by selecting the degree of curvature of the overturned edge.

Reference numeral 5 designates the main body of the shank material, which is molded by slash molding or injection molding, and the front shank part 6 has a curved surface;
has a fastener attachment part 7.

The fastener cloth 4 and the fastener attachment portion 7 of the main body 5 are fixed by high frequency welding.

Therefore, even if the fastener cloth 4 is fixed to the front flap part 6 which has a curved surface, the front flap part can be fixed by making the curved edges of the side edges 2, 2' of the material curved according to the curved surface of the front flap part 6. Since the fastener 3 has a curved surface that matches the curved surface of 6, the fastener 3 does not wave or deform.

Next, the assembly manufacturing process of this embodiment will be explained.

8 is an upper electrode, 9 is a lower electrode, and it is possible to apply a high frequency current between both electrodes.

The fastener cloth mounting surface 10 of the lower electrode 9 is a curved surface with a concave side surface, and the pressing surface 11 of the upper electrode is a curved surface with a convex side surface.

Further, the lower electrode 9 has a groove 12 in the central longitudinal direction.

The groove 12 may be a U-shaped groove, as shown in FIG. 8, or a O-shaped groove.

Therefore, the fastener cloth 4 with the material 1 attached thereto is placed on the lower electrode 9, and the material 1 is dropped into the groove 12 on the lower side.

Next, the lace main body 5 is placed on top of the fastener cloth 4 while making the attachment positions of the fastener attachment portion 7 of the lace main body 5 and the fastener cloth 4 correspond to each other.

Then, the upper electrode 8 is pressed against the overlapping portion of the fastener cloth 4 and the lace main body 5, and a high frequency current is applied between both electrodes, thereby high frequency welding the fastener cloth 4 and the lace main body 5.

Next, the portions of the main body 5 of the zipper material that do not need to be fused to the fastener cloth 4 are removed.

During welding, the material 1 has a curved line corresponding to the curved surface of the front flap 6 due to the curved portions of the side edges 2, 2', so that no deformation such as waving occurs in the fastener.

(g) Effects of the invention Accordingly, it is possible to provide footwear having a fastener on the front flap portion made of a curved surface, and it is possible to provide footwear that is easy to fit the foot and has a large degree of freedom in design.

[Brief explanation of the drawing]

Figures 1 to 3 are conventional examples, Figure 4 is a parts diagram of an embodiment of this invention, Figure 5 is an assembly diagram of the same, Figure 6 is a perspective view of an embodiment of this invention, and Figure 7. 9 to 9 are diagrams showing the manufacturing process of this embodiment, and FIG. 9 is a sectional view taken along line AA in FIG. 7. 1... Water and land are materials, 2,2'... Side edges,
3...Zipper, 4...Zipper cloth, 5...Fold material body, 6...Front thread part,
7...Zipper mounting part, 8...Upper electrode, 9...Lower electrode, 10...Zipper cloth mounting surface, 11... Pressure surface, 12...
·groove.

Claims (1)

[Scope of utility model registration request] A water barrier for footwear with a zipper is made by fixing the fastener cloth on both sides of the zipper to the side part of the material, and the water and land material is made of a concave curve with an inwardly curved edge. is wood.