JP3166104B2 - The basement, its manufacturing method and the base of the basement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basement, a method of manufacturing the basement, and a bottom of the basement used for civil engineering, construction sites, agricultural work, and various other uses.

[0002]

2. Description of the Related Art A conventional basement is manufactured by attaching the bottom of a basement made of rubber or synthetic resin to an upper obtained by sewing a fabric, by attaching or sewing. For the former attachment type, the upper is hung on an aluminum foot mold, an adhesive is applied to the periphery and the bottom of the upper, and the unvulcanized underground base is treated with a solvent and the like, and then laminated and adhered And vulcanization molding. In the latter case, the upper part is hung on an aluminum foot mold, and the vulcanized bottom is glued with an adhesive or stacked in an unbonded state, and the periphery of the bottom is laminated. It is a method of sewing with a sewing machine.

[0003]

In the manufacturing method according However sticking formula [0005], although it is possible to surely attach the bottom firmly, since it is necessary to bond unvulcanized state, soil fu first part upward arched There was a grudge that the method of curve forming could not be adopted. In addition, in the manufacturing method using the sewing method, it is possible to previously form a curved shape by vulcanization molding in an arch shape so that the bottom of the soil fits the shape of the foot. There is a surface where the adhesion to the upper is hardly performed as compared with the method. Therefore, although the sewing machine is sewn, the end of the toe and the like are likely to peel off.

[0004] In order to solve the above-mentioned problems, the inventor of the present invention divided the bottom of each basement into front and rear parts, and vulcanized and formed the bottom of the soil so as to curve upward, and the unvulcanized state. It has been found that it is possible to provide an excellent underground base by vulcanizing and molding by bonding this to the upper bottom and the upper bottom, and has already proposed it. (See Japanese Patent No. 2509132)

It has been confirmed that the use of the front bottom portion and the rear bottom portion according to the above-described method can provide an underground stair having the characteristics of an underground stave. As a result of further studies for improving the appearance of the present invention, the present invention has been achieved.

[0006]

That is, the gist of the present invention is to provide a basement having a bottom attached to an upper and including a base which can overlap with each other, and a base divided into front and rear portions around the base. Wherein a first soil base is curved upward and a vulcanized rear bottom having a shape behind the first soil base is adhered to an upper bottom, and a second soil base is formed. First, an unvulcanized front bottom having a portion having a shape in front of the upper portion is adhered so that the upper bottom and the second soil foot overlap the first soil foot. The bottom of the basement is characterized by being formed by vulcanization.

The present invention also relates to a method of manufacturing an underground structure in which a bottom is attached to an upper, wherein a bottom is used which includes an earthen foot portion which can be overlapped with each other and which is divided forward and backward in the vicinity thereof. A first soil base is curved upward and a vulcanized rear bottom part having a shape behind the first base is adhered to the upper bottom, and then a second soil base is provided. The unvulcanized front bottom having the front shape is bonded so that the upper bottom and the second soil foot overlap the first soil foot, and vulcanization molding is performed thereon. The gist of the invention is also a method of manufacturing a subterranean structure characterized by the following.

[0008] The present invention further comprises a bottom part which includes an earthen part which can be overlapped with each other, and is divided into front and rear parts in the vicinity thereof, wherein the first earthen part is curved upward and A vulcanized and formed rear bottom portion having a rear shape, and a second soil foot portion having a second soil foot portion and an unvulcanized front bottom shape having a forward shape. The gist also includes a bottom of each basement, which is bonded so as to overlap the first soil base.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a bottom view showing an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along line AA of FIG. In the figure, reference numeral 1 denotes an upper sewn with a fabric, which is hung on the midsole of 2, and the bottom is attached to the bottom to form an underground wall.

According to the present invention, the bottom of each underground constructed as described above is divided into a rear bottom portion 3 and a front bottom portion 4 including a soil foot which can overlap each other as shown in the figure. It is used. The rear bottom 3 of these bottoms is formed by vulcanizing the first soil base 3A with a curved upper portion and a shape of the bottom rearward, and is bonded to the upper bottom. 3 in the figure
B is a reinforcing piece erected at the rear end of the rear bottom portion 3, and the upper end is stitched 3C to the upper 1 contact portion as necessary.

On the other hand, the front bottom part 4 has a second soil base part 4A which has a shape overlapping with the first soil base part 3A, and has an unvulcanized state having a shape of a bottom forward. The front bottom 4 is bonded so that the upper bottom and the second soil foot 4A overlap with the first soil foot 3A, and the bottom is vulcanized. In the drawing, 4B is a reinforcing piece provided from the toe to the side of the front bottom 4 and is similarly provided in an unvulcanized state, and can be adhered along the contact portion of the upper 1 during vulcanization molding. it can.

Since the underground base of the present invention has the above-described configuration, the bottom soil base is bent upward due to the curved formation of the first soil base 3A of the rear bottom part 3. In addition to being capable of fitting to the foot when worn, it has the ability to firmly attach a toe that is particularly prone to peeling. And especially in the present invention, the rear bottom 3
And the front bottom part 4 are overlapped and adhered to each other at the soil foot parts 3A and 4A, so that they are adhered over a sufficiently large area and are stronger, and the waist strength due to mutual adhesion can be exhibited. Has the feature that the seam line of the adhesive can be made less noticeable and the appearance can be improved.

If the thickness of the soil foot 3A, 4A of each of the rear bottom portion 3 and the front bottom portion 4 is gradually reduced toward the tip as shown in FIG. There is an advantage that there is no uncomfortable feeling after bonding and an improvement in appearance can be expected. In this figure, both soil bases 3A, 4A
Is gradually reduced, but only one of them may be gradually reduced.

As is apparent from the above description, the manufacturing method of the present invention can be performed according to a conventional manufacturing method except that the bottom is divided and bonded. Rear bottom 3
Is vulcanized and formed by pressing so that the first earthen part 3A is curved upward, reinforcing pieces 3B are provided as necessary, and an appropriate tread pattern is formed. Then, the rear bottom portion 3 is bonded to a predetermined position on the bottom portion of the upper 1, and the reinforcing piece 3B is stitched 3C as necessary or in a later step.

The other front bottom portion 4 is provided with a second soil paddle portion 4.
A, The unreduced vulcanized shape is formed so that a reinforcing piece 4B provided as required and an appropriate tread pattern are formed, and this is adhered to a predetermined position on the bottom of the upper 1 and the second soil pad 4A is adhered so as to overlap the first soil base 3A,
It can be manufactured by vulcanizing the bottom in this state. In addition, when the reinforcing piece 4B is provided on the front bottom portion 4, this portion can be raised and vulcanized and formed in a state where the reinforcing piece 4B is adhered to the contact portion on the upper side.

The bottom of each basement of the present invention is also apparent from the above description, but the rear bottom 3 obtained by vulcanization molding in the same manner as described above and the front bottom 4 formed in an unvulcanized state are respectively provided. The bottoms 3A and 4A are adhered so as to overlap each other to form a single bottom. In the obtained single bottom state, the reinforcing piece 3B of the rear bottom part 3 is in a rising state, and the reinforcing piece 4B of the front bottom part 4 is in a planar state. Then, the single-piece bottom is bonded to the bottom of the upper 1 and then vulcanized and used.

It should be noted that the seam line of the superimposition by bonding the rear bottom portion 3 and the front bottom portion 4 to each other by bonding the soil bases can be a gentle curve instead of a straight line as shown in FIG. Although omitted, a contact strip may be bonded to this portion to further strengthen the bonding of the seam, or pressure bonding by embossing may be performed.

In the above embodiment, the first soil base 3A of the rear bottom 3 is placed inside and the second soil base 4A of the front bottom 4 is placed outside. It is also possible to reverse inside and outside. Such a reverse configuration is convenient when a mold surface such as a mark is provided in advance on the first soil pad portion 3A.

[0019]

Since the invention according to the present invention are those having the structure such as described above, curving of using bottom consisting of a bottom portion which is divided into front and rear <br/> skillfully, above the first portion fu soil While ensuring that the front bottom, such as the toe, where peeling is likely to occur, is firmly and securely bonded to the upper.
The bottom of each basement that can be provided for such an underground base can be provided as a whole without overlapping and firmly adhered to each other at the base of the soil and without impairing the appearance. There are benefits that can be provided.

[Brief description of the drawings]

FIG. 1 is a bottom view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view taken along line AA of FIG.

FIG. 3 is a partial cross-sectional view showing the vicinity of an earthen foot portion according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper 2 Middle bottom 3 Rear bottom 3A First soil base 4 Front bottom 4A Second soil base

Claims (6)

(57) [Claims] An underground structure having a bottom attached to an upper, wherein a bottom which is capable of overlapping with each other and which is divided into front and rear portions in the vicinity thereof is used as a first soil base. Is vulcanized upward with a rearward shape and vulcanized and formed, and a rear bottom portion is adhered to the upper bottom portion, and has a second soil foot and has a forward shape. The vulcanized front bottom is bonded so that the upper bottom and the second soil foot overlap with the first soil foot, and the bottom is vulcanized and formed. Every time. 2. The underground base according to claim 1, wherein a front bottom portion and a rear bottom portion are used in which at least one of the first and second soil bases has a thickness gradually reduced toward a tip. 3. A method for manufacturing an underground base having an upper with a bottom attached thereto, the method including a soil foot which can be overlapped with each other, and using a bottom which is divided forward and backward in the vicinity thereof. A rear bottom portion, which has been vulcanized and formed so as to be curved upward and has a rearward shape, is adhered to the upper bottom portion, and then a second soil foot portion is provided, and The unvulcanized front bottom provided with the upper bottom and the second soil base are adhered so as to overlap with the first soil base, and vulcanization molding is performed thereon. Characterized by the method of manufacturing underground. 4. The underground base according to claim 3, wherein a front bottom portion and a rear bottom portion are used in which at least one of the first and second soil foot portions has a gradually decreasing thickness toward the front end. Production method. 5. A shape comprising a bottom which is overlapped with each other and which is divided into front and rear portions in the vicinity thereof, wherein the first bottom of the soil is curved upward and rearwardly therefrom. A vulcanized rear bottom with
An unvulcanized front bottom having a second soil base and having a forward shape is adhered such that the second soil base overlaps the first soil base. The bottom of each basement that is characterized by. 6. A basement according to claim 5, wherein a front bottom portion and a rear bottom portion are used, wherein the thickness of at least one of the first and second soil bases decreases gradually toward the tip. bottom.