JPH0535681Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a front thong that is mainly used as a thong for sandals, and whose length can be adjusted by screwing.

BACKGROUND ART Conventionally, the front thong of a thong for zori sandals generally uses hemp thong as a core body, and the core body is inserted into the insertion hole of the front thong provided at the front end of the sandal, and then the core body is inserted into the insertion hole of the front thong provided at the front end of the sandal. It is configured to be attached to sandals by tying it in the recess, and the length of the thong is determined by the position and stiffness of the knot in the core body, and is used to adjust the comfort of the thong. This kind of adjustment of the thong was acquired through years of skill, but as the industrial structure has changed in recent years, there are fewer people who are skilled at this type of thing, and it is now possible to easily adjust it even if you are not a particularly skilled person. You are required to do so.

In order to solve such problems, for example, an earlier application of the present applicant is published in Japanese Utility Model Application No. 172501/1983.

The front thong used in the earlier application above has a core thong,
A thin metal cylinder with a male thread on the outer periphery is covered, caulked to the core body, and the cylinder body and the washer are attached to the core body, which protrudes from the back side of the front thong insertion hole provided in the sandals. The front thong is attached by fitting a thin nut and hooking the washer into the concave part of the sandals formed on the back side of the insertion hole, and adjusting the threading depth between the nut and the male thread of the cylinder body. The desired length of the thong was obtained by

Problems to be solved by the invention The front thong of the above-mentioned prior application could be attached by simply screwing together the male thread and the nut, and could be adjusted freely, so no one needed to be proficient in this type of work. figure,
Although it had the advantage of being less labor-intensive, it had the drawbacks of a large number of parts and an increase in parts cost, and it was desired to solve these problems.

Means for Solving the Problems Therefore, the present invention uses a molded synthetic resin to form the core of the front thong, molds a screw on the circumferential surface of the tip of the core, and connects this screw with the core of the front thong. The tip of the core body is fixed using an adjustment tool that is integrally formed with a nut part that is screwed together and a flange part that is hooked into a recess provided in the sandals on the back side of the insertion hole of the front thong. The present invention provides a front thong characterized by having a front thong configured as follows.

Function As described above, the present invention uses a synthetic resin molded body as the core, so the core itself can be provided with a screw. In addition, the number of parts is reduced because we use an adjustment tool that integrates a nut for fixing the core in place and a flange instead of a washer.
The above-mentioned conventional drawbacks can be eliminated.

Embodiments Examples of the present invention will be described below with reference to the drawings.

In the diagram, A is the front thong. B is the main body of the thong with the front thong A attached to the front end. C is for zori. 1 is the synthetic resin core body of the front thong A.

The core body 1 is formed so that the part that is hung on the main body B of the thong and folded back in half is relatively thin and has a round cross-sectional shape, and the tip part 2 that has a semicircular cross-section and is joined to each other in a cylindrical shape has a large diameter. ing. 3 is a screw formed on the circumferential surface of this tip 2. 4 is a covering of the core body 1. Reference numeral 5 denotes an adjusting tool made of metal or synthetic resin, which integrally includes a nut portion 6 into which the tip portion 2 of the core body 1 is fitted and screwed with the screw 3, and a flange portion 7. This adjuster 5 fits into a recess 8 provided on the back side of the sandals C, and screws together the tip 2 of the core body 1 protruding from the insertion hole 9 of the front thong that opens in the recess 8.
By hooking the flange portion 7 to the edge of the insertion hole 9, the tip portion 2 is fixed to the back side of the sandals C.
Reference numeral 10 designates a set screw hole provided in the flange portion 7 for fixing the adjuster 5 in the recess 8 of the sandal after the front thong A has been worn.

Incidentally, when implementing the present invention, a reinforcing core wire such as a metal wire may be inserted into the synthetic resin core body using an insert.

Effects of the invention As described above, the invention uses a synthetic resin that allows screws to be installed in the core body of the front thong.
By omitting the use of the conventionally used male-threaded metal cylinder, the number of parts is reduced, and the caulking process is omitted, reducing costs and improving work efficiency. In addition, by molding the thickness of the core body into different sizes, the front thong has parts of different thickness to improve the contact of the toes, and to prevent the front thong from loosening and falling out, which is the most important thing for the front thong. It can improve functionality and provide sufficient strength. Furthermore, according to the present invention, the nut and washer for fixing the core are combined into one adjusting tool that includes a nut part and a flange part, which also reduces the number of parts and labor. Since the threading depth is increased by the thickness of the conventional washer, the fixing strength of the core is increased, while the depth of the recess for fixing the core on the back side of the sandals is also shallower. It is also possible to cut off the tip of the core that protrudes from the adjuster, heat weld it to make it shorter, and make the tip of the sandal thinner to create a better-shaped sandal. It has practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an exploded perspective view thereof. FIG. 2 is a partially cutaway side view showing the state of use. FIG. 3 is a partially cutaway bottom view of the same as above. Fourth
The figure is an elevational view of an embodiment in which a core wire is inserted into the core body. FIG. 5 is a cross-sectional view taken along the line X--X in FIG. 4. A... front thong, B... main thong, C... sandals,
1...Core, 2...Tip, 3...Screw, 4...
Covering, 5... Adjustment tool, 6... Nut part, 7... Flange part, 8... Recessed part, 9... Insertion hole, 10...
Set screw hole, 11... core wire.

Claims (1)

[Claims for Utility Model Registration] (1) The core of the front thong is formed using a synthetic resin molded body, and a screw is molded on the circumferential surface of the tip of the core, and this screw and the screw are formed. Using an adjustment tool that is integrally formed with a nut part that fits together and a flange part that is hooked into a recess provided in the sandals on the back side of the insertion hole of the front thong, the tip of the core body is attached to the back side of the sandals. A front thong characterized by being configured to be fixed. (2) Utility model registration claim 1, characterized in that the core body contains a reinforcing core wire.
Front thong as described in section.