JP2828899B2 - The basement and its manufacturing method and basement base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground wall and a method of manufacturing the same, which can be used for civil engineering, construction sites, agricultural work, and various other uses, and an underground floor used therefor.

[0002]

2. Description of the Related Art Conventionally, underground sheaves have been manufactured by fixing an upper obtained by sewing a cloth and a bottom made of rubber or synthetic resin by a sticking or sewing method. Sticking by the sticking method means that the upper is fished into the aluminum foot mold, and the adhesive is applied to the upper rim and bottom,
On the other hand, this is a production method in which the adhesive surface of the unvulcanized underground rubber is treated with a solvent to form a paste, and then both are adhered and then vulcanized. In addition, the method of fixing by sewing means that the upper part is mainly fitted to an aluminum foot mold, and the base which has been vulcanized (pressed) in advance is pasted with an adhesive and sewn with a sewing machine or the like. Or, it is a manufacturing method in which the bottom rubber that has been pressed and vulcanized underground is attached only by sewing without using an adhesive, and without sewing the sewn upper. There are many manufacturing methods). In order to make it easier for the arch to adhere to the soles, an underground base is provided in which the vicinity of the arch is curved upward. Must be vulcanized.

[0003]

Therefore, of the conventional manufacturing methods, the sticking type manufacturing method can surely obtain a strong fixed state, but it is necessary to bond in an unvulcanized state. However, it has not been possible to form the arch portion so as to be curved in an arch shape.
In addition, in the manufacturing method using the sewing method, the bottom of the basement can be freely vulcanized and formed into various shapes so that the arch is curved in an arch shape, but the vulcanized rubber bottom and the upper side are firmly bonded. Although it was difficult to adhere, it was further reinforced by sewing. However, the adhesion at the end such as the toe was easy to peel off. In addition, there is a problem in that it takes time and effort to manufacture since bonding and suturing operations are required, and further, water easily penetrates from a sewn portion.

The inventor of the present invention has solved the above-mentioned problem, and has proposed that the underground base is constituted by a three-part bottom including a front bottom, an arch, and a rear bottom, so that the front bottom has appropriate flexibility. When the mobility is ensured in a good state, and when the vicinity of the arch is curved upward, the curved shape can be maintained, and the rear bottom is lightweight and has a moderate elasticity, so that the heel Focusing on the ability to disperse or reduce the load applied to the wearer and increase the ease of wearing, improve the comfort, workability, mobility, stability, etc. according to the characteristics of the foot, and also endurance It is an object of the present invention to provide a basement, a method of manufacturing the basement, and a base, which are excellent in performance and contribute to reduction in processing cost.

[0005]

According to the present invention for solving the above-mentioned problems, in the underground base, the bottom of the base is located on the front bottom and the rear of the arch which corresponds to the bottom of the arch and the bottom of the arch. It is composed of three parts on the rear bottom corresponding to the bottom, and a vulcanized arch part,
The unvulcanized front bottom and the unvulcanized rear bottom are
Each of them is adhered to the upper bottom part, and each is polymerized and adhered to each other at the edge part through a bonding margin, and the bottom part is vulcanized.

[0006]

[0007] In the above, the arch comprises an arch portion curved upward, a front bottom portion formed to be more flexible than the rear bottom portion, and a rear bottom portion formed to be higher in hardness than the front bottom portion. can do.

[0008] In the above, a peripheral portion which rises and is adhered to the contact portion (near the lower end portion) of the upper can be formed on the front bottom portion and the rear bottom portion.

[0009] In the above, the reinforcing piece can be bonded to the overlapping portion at the three edges of the arch, the front bottom and the rear bottom. The reinforcing piece may be lined with the edge of each bottom so as to straddle the adjacent edge.

[0010] In the method of manufacturing an underground stair according to the present invention, the underground stair is divided into three portions, an arch bottom portion, a front bottom portion corresponding to a bottom portion forward of the arch portion, and a rear bottom portion corresponding to a bottom portion behind the arch portion. The vulcanized shank, and the unvulcanized front bottom,
The unvulcanized rear bottom portion is bonded to the upper bottom portion, respectively, and polymerized and bonded to each other at the edges via bonding margins, and then the bottom portion is vulcanized and formed.

[0011]

[0012] The underground base of the present invention is composed of three parts: an arch part, a front bottom part corresponding to a bottom part in front of the arch part, and a rear bottom part corresponding to a bottom part behind the arch part. The vulcanized shank, the unvulcanized front bottom, and the unvulcanized rear bottom are combined so as to be polymerized and bonded to each other at an edge via a bonding margin. .

[0013]

[0014] In the underground base, a peripheral portion which is raised and adhered to the contact portion of the upper can be formed at the front bottom portion and the rear bottom portion.

In the above-mentioned underground base, a reinforcing piece can be bonded to an overlapped portion at the edges of the arch, the front bottom and the rear bottom.

[0016]

[Function] The arch portion is pre-vulcanized and the upper curved surface is stably maintained, and the front and rear bottoms are bonded in an unvulcanized state and then vulcanized to obtain the hardness and other characteristics of the toe and heel. It can be formed differently. If the boundary between the arch portion and the front and rear bottoms is vulcanized after polymerization bonding, the bonding strength is further increased and peeling can be prevented. If the arch portion and the front and rear bottom portions are separately formed and bonded, by adjusting the overlapping width of the overlapping portions, it is possible to easily manufacture various types of basements having different bottom dimensions.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment. In this basement, an upper 1 sewn with cloth is hung on the lower surface of an insole 2, and three minutes are attached to the bottom of the hung upper 1. The bottom of the basement in the state, that is, the front bottom part 3, the arch part 4, and the rear bottom part 5 are bonded to form the basement base.

The front bottom portion 3 constitutes a bottom portion in front of the arch portion of the bottom of the basement. The front bottom portion 3 may have only a bottom surface. It can be assumed that it is extended. This peripheral portion 3a is raised (rolled up) and adheres to the contact portion of the upper to reinforce this portion. Bottom arch 4
The edge on the side is an adhesive margin 3b of an appropriate width. Front bottom 3
Is made of a material which is relatively flexible as compared to the rear bottom portion 5 and has excellent bending kinematics, and furthermore, is made of an unvulcanized rubber or a synthetic resin. It is vulcanized and formed after bonding to the bottom surface.

The arch portion 4 is interposed between the front tread portion and the rear heel portion of the bottom surface, has an appropriate size, and is an arch-shaped upward curved surface which can be appropriately pressed against the arch portion of the foot. Is formed by vulcanizing and molding a rubber or synthetic resin in advance, and adhesive margins 4a and 4b having appropriate widths are formed on the front and rear edges thereof. This arch part 4
Can be appropriately formed to be thin as long as the upward curved shape is restored. The arch 4 may have a shape in which the upper curved surface is extended to the bonding margins 4a and 4b at the front and rear ends.

The rear bottom portion 5 constitutes a heel sole portion behind the arch portion 4 and may have only a moderately thick bottom surface. However, the peripheral edge portion 5a is appropriately formed at the rear of the bottom surface and at the side edge. And can be extended as appropriate.
The peripheral portion 5a rises up and adheres to the contact portion of the upper to reinforce this portion. The bottom edge of the arch 4 on the side of the bottom is provided with a bonding width 5b of an appropriate width. The rear bottom portion 5 has a moderate hardness as compared with the front bottom portion 3 while maintaining a suitable elasticity, and is more preferably processed with a material that is reduced in weight by foaming or the like, and is made of unvulcanized rubber or synthetic rubber. It is a resin, and is vulcanized and formed after bonding to the lower surface of the upper bottom of the upper.

As shown in FIG. 2, one or both of the bonding margins 3b and 4a and the bonding margins 4b and 5b of each part may be slightly thinner as shown in FIG. Adhesion allowances 3b and 4a to be polymerized respectively,
Any of 4b and 5b may be polymerized one above the other,
It is more preferable that the bonding margins 3b and 5b of the front and rear bottoms are bonded on the lower side. Irregular ribs such as reinforcement or non-slip of each surface, and other configurations other than those described above are optional. In addition, peripheral portions 3a, 5a formed on the front bottom portion 3 and the rear bottom portion 5,
For example, as shown in FIGS. 3A, 3B and 3C, it can be formed in various different shapes.

First, an adhesive is applied to the contact portion of the upper 1, the bottom and the midsole 2, and an arched portion 4 coated with an adhesive is attached to the bottom center of the basement.
a, 4b, adhesive is applied to the front bottom 3 and the rear bottom 5
Is wiped with a solvent such as gasoline to form a rough surface, and an adhesive is applied thereto. A front bottom portion 3 is attached to a front portion of the bottom, and at the same time, a peripheral portion 3a of the front and both sides is provided. And glue them together, and bond 3 above the bond allowance 4a of the arch part 4.
b, the rear bottom 5 is adhered to the rear of the bottom in the same manner as the front bottom 3, the peripheral edge 5a is adhered, and the adhesion margin 5b is adhered above the adhesion margin 4b of the arch 4. Then, if this is set in a vulcanizing mold and vulcanized, an underground base where the front and rear bottom portions 3 and 5 are also firmly adhered to the bottom can be obtained.

[0024] According to the above-described underground structure, the underground structure can be formed as a bottom which can exhibit different characteristics of at least three portions. For example, since the arch part 4 is formed so as to be able to curve upward and restore shape,
The basement fits snugly on the foot, increasing the sense of unity with the basement foot, and does not cause discomfort or rubbing when worn. Further, since the front bottom 3 is formed with appropriate flexibility and sufficient abrasion resistance, the degree of freedom of the bending motion and the degree of adhesion to the foot are increased, and the work operability and durability are improved by improving the feeling of contact with the ground. And at the same time, the peripheral portion 3a
Can be raised to enhance the integrity with the upper contact portion, and further enhance the integrity of the part where the external shear force is strongly applied, such as the base of the finger. The rear bottom part 5 has moderate hardness and elasticity to satisfy the impact resistance and the stepping resistance of the heel, the dispersion of the load, and the like. The weight of the rear bottom part 5 can improve comfort. Also, by providing the peripheral edge portion 5a, the same effect as described above can be exerted on the heel portion.

The width of the overlap between the front bottom portion 3 and the arch portion 4 between the bonding margins 3b and 4a and the width of the adhesion between the arch portion 4 and the rear bottom portion 4b and 5b can be adjusted to be appropriate. Shape By using the above-mentioned member, it is possible to form several types of underground layers, that is, underground layers having different dimensions. Therefore, it is not necessary to prepare dies having different dimensions one by one, and the dies of each part can be saved. In this case, for example, it is possible to prepare only one kind of the size of each part, and to manufacture a basement having several kinds of dimensions,
By forming only a few types of members having different sizes, for example, only three types of members, large, medium, and small, it is possible to form a basement corresponding to a wide range of dimensions. Further, since the unvulcanized front and rear bottom portions 3 and 5 are formed by laminating on both sides of the arch 4, both edges of the toe side and the heel side which are easily peeled can be maintained in a firmly bonded state.

The front bottom portion 3, the arch portion 4, and the rear bottom portion 5 having the above-mentioned structure can be used as a combination of three points to form a bottom.

FIGS. 4 and 5 show a structure different from the above. FIG. 4 shows a structure in which the bonding margins 3b and 4a and the overlapping parts of the bonding margins 4b and 5b are overlapped with both bonding margins, respectively, as in the above construction. A belt-shaped reinforcing piece 6 having an appropriate width is bonded from the outside in parallel with the edge. The reinforcing piece 6 may be vulcanized, but if it is unvulcanized and then vulcanized after bonding, the bonding can be further strengthened. FIG. 5 shows a state in which a reinforcing piece 6 is adhered to the inside bottom of the overlapping portion. In any of the embodiments of FIGS. 4 and 5, the reinforcing piece 6 reinforces the bottom of the basement. For example, the upwardly curved shape of the arch 4 can be reinforced to further strengthen the shape retention. In addition, separately from the above, the front and rear bottom portions 3 and 5 may be vulcanized in advance, and both may be adhered to the bottom surface in a vulcanized state to be used underground.

[0027]

As described above, according to the present invention, it is possible to provide a subterranean base in which the bottom of the subterranean is formed by a three-part bottom portion. Since it has a fitted arch 4, it can absorb a slight difference in the size and shape of the foot and the gap between the base and the base, and further improves the workability and wear resistance of the front bottom 3, and at the same time, the rear bottom 5 Improve comfort, workability, mobility, and stability according to the characteristics of each foot so that it can have moderate elasticity and hardness, and can also be lightweight. Can be.

Each of the three parts is not limited to the above.
Individual characteristics can be given, and the design can be further diversified by different colors.

In addition, since the length of the adhesion allowance between the arch and the front and rear bottoms can be adjusted to easily form different lengths of the basement, it is not necessary to prepare all the different molds, and the cost can be reduced. Can also contribute. Further, the overlapped portion which is easily peeled off and the both edge portions on the toe side and the heel side can be maintained in a firmly bonded state, and the durability can be improved.

[Brief description of the drawings]

FIG. 1 is a bottom view of an underground according to one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

3 (A), (B) and (C) are side views of each underground formed with different peripheral shapes of a front bottom portion and a rear bottom portion.

FIG. 4 is a longitudinal sectional view of an underground according to another embodiment of the present invention.

FIG. 5 is a vertical sectional view of a basement according to still another embodiment of the present invention.

[Explanation of symbols]

 1 Upper 2 Middle bottom 3 Front bottom 3a Perimeter 3b Bonding allowance 4 Arch 4a, 4b Bonding allowance 5 Rear bottom 5a Perimeter 5b Bonding allowance 6 Reinforcement piece

Claims (8)

(57) [Claims] An underground base comprises three portions, an arch portion, a front bottom portion corresponding to a bottom portion in front of the arch portion, and a rear bottom portion corresponding to a bottom portion behind the arch portion. The molded arch, the unvulcanized front bottom, and the unvulcanized rear bottom are respectively bonded to the upper bottom and are polymerized and bonded to each other at the edges via bonding margins, and Each time the base is vulcanized and molded underground. 2. An arch part formed by curving upward,
2. The underground base according to claim 1, comprising a front bottom formed so as to be more flexible than the rear bottom, and a rear bottom formed so as to have higher hardness than the front bottom. 3. To 3. A front bottom and a rear bottom peripheral edge portion which is adhered rise to contact Sai portion of the upper is formed claimed
Item 1. The underground according to item 1 or 2 . Wherein the arch portion, the front bottom, the overlapping portion of the three parties of the edge of the rear bottom, made by bonding a reinforcing strip according
Item 4. A basement according to any one of Items 1 to 3 . 5. An underground base comprising three portions : an arch portion, a front bottom portion corresponding to a bottom portion in front of the arch portion, and a rear bottom portion corresponding to a bottom portion behind the arch portion. The vulcanized shank, the unvulcanized front bottom, and the unvulcanized rear bottom are respectively bonded to the upper bottom and polymerized and bonded to each other at the edges via bonding margins. Underground manufacturing method by vulcanizing and molding the bottom. 6. An arch part, a front bottom part corresponding to a bottom part ahead of the arch part and a rear bottom part corresponding to a bottom part behind the arch part,
A vulcanized arch, an unvulcanized front bottom, and an unvulcanized rear bottom are combined so that they are polymerized and bonded to each other at an edge via an adhesive margin. Each basement floor for manufacturing. 7. A front bottom and a rear bottom peripheral edge portion which is adhered rise to contact Sai portion of the upper is formed claimed
Item 7. An underground base for manufacturing underground base according to item 6 . 8. arch portion, the front bottom, the overlapping portion of the three parties of the edge of the rear bottom, made by bonding a reinforcing strip according
Item 8. An underground base for manufacturing underground base according to item 6 or 7 .