JPH09103303A - Shoes and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide shoes and a manufacturing method therefor which secure a sufficient fastening force of a sole without the buffing of an upper. SOLUTION: An upper 1 sewn is mounted on a last and the side periphery part of the bottom of the upper 1 is hoisted and stuck on the outer circumference part of the bottom of an insole 2 fixed on the bottom of the last. Through holes 5 are bored in the bottom outer circumference part of the insole 2. A molding die (b) for molding the sole 3 is sealably put on the bottom part of the upper 1 and a synthetic resin is injected into the molding die. Pin parts 7 to be inserted into the through holes 5 are formed integrally on a sole 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe and a method for manufacturing a shoe, and more particularly, to a shoe and a shoe having improved adhesion between an upper and an insole and a synthetic resin sole. Regarding the method.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 19, soccer shoes, golf shoes and the like have a sewn leather upper 1
01 is provided with a shoe sole 103 made of synthetic resin.
These shoes 100, after sewing the leather upper 100,
The upper 101 is shaped into a predetermined shoe shape by a habit forming step, and is attached to a molding last c as shown in FIG. At the same time, the insole is fixed to the bottom surface of the last c, and the peripheral edge of the shoe sole of the upper 101 is suspended and adhered to the outer periphery of the bottom surface of the insole 102.

[0003] Thereafter, a sealing sheet 104 is attached to the bottom surface of the upper, and the surface of the hanging portion 101a which is suspended and adhered to the outer peripheral portion of the bottom of the midsole 102 is buffed. Rough and flatten the surface and move on to the next shoe sole forming process. As described above, the upper 101 having the insole 102 attached thereto is mounted on the last c, and a molding die for molding the sole is placed on the bottom surface of the shoe in a sealed manner and melted in the molding die. The synthetic resin is injected and molded with the shoe bottom made of synthetic resin attached to the upper surface and the bottom surface of the insole (not shown). That is, the above-mentioned buffing step is performed to maintain the adhesiveness between the upper 101 suspension portion 101a and the synthetic resin sole 103.

[0004]

The above-described buffing work is carried out manually or by computer control along the range immediately inside where the synthetic resin sole 103 is formed. Due to the setting position of the leather 101 being displaced, the shoe sole 10
Buffing may occur even in the area other than the area covered by 3. The shoe that has been buffed by sticking out in this manner has a small buffing scratch after the completion, and thus the commercial value is lowered. Also, the upper 1
Due to buffing against 01, the instep 1 with uneven thickness
There was a case where 01 was partially thinned and that portion was weakened in strength.

Furthermore, especially as in soccer shoes,
In a shoe in which a very strong force is locally applied to the sole during use, the toe portion of the sole may be peeled off from the hanging portion 101a of the upper 101. Under such circumstances, the development of shoes that can reduce the buffing process or can secure a sufficient fixing strength between the hanging portion 101a of the upper 101 and the shoe sole 103 made of synthetic resin without performing the buffing process. Was wanted.

An object of the present invention is to provide a shoe having the above-mentioned structure and a method for manufacturing the shoe, which is capable of sufficiently securing the fixing force of the sole even without buffing the upper. is there.

[0007]

In order to achieve the above-mentioned object, according to the present invention, after sewing, an upper shoe shaped into a substantially shoe shape is attached to the last, and a shoe sole side peripheral portion of the upper shoe, Suspend and stick to the outer periphery of the bottom of the insole fixed to the bottom of the last, and a required number of through holes that communicate the shoe sole side with the inside of the shoe are drilled at appropriate locations on the outer periphery of the insole bottom. A molding die for molding a shoe sole is applied to the bottom surface of the instep to be mounted in a sealed manner, and the molten synthetic resin is injected into the molding die.

Further, according to the present invention, after sewing, a shoe upper shaped into a shoe shape is attached to the last, and a peripheral edge of the shoe sole on the sole side is fixed to the bottom surface of the last bottom outer peripheral portion of the insole. A desired number of through holes that connect the shoe sole side with the inside of the shoe at appropriate locations on the outer periphery of the bottom surface of the insole, and the diameter of the upper end side of the through holes is set to the lower end side. The mold is formed to have a diameter larger than that of the upper, a mold for molding the shoe sole is applied to the bottom of the upper, and the mold is sealed and mounted, and the molten synthetic resin is injected into the mold.

According to the present invention, an insole having a groove formed along the outer peripheral portion of the upper surface is placed on the bottom of the last, and after sewing, the upper which is shaped into a substantially shoe shape is attached to the last, The shoe sole side peripheral portion in the above is hung and adhered to the outer peripheral portion of the bottom surface of the insole, and the shoe sole side and the inside of the shoe are communicated with each other at an appropriate position on the outer peripheral portion of the bottom surface of the insole so as to communicate with the inside of the groove. A required number of holes are bored, a molding die for molding a shoe sole is applied to the bottom surface of the instep, and the shoe is mounted in a sealed manner, and the molten synthetic resin is injected into the molding die. .

According to the shoe of the present invention, the shoe sole side peripheral portion of the upper which is formed in a substantially shoe shape is hung and attached to the outer periphery of the bottom of the insole which closes the bottom opening of the upper, and the insole is attached. A through hole for communicating the shoe sole side with the inside of the shoe is bored at an appropriate location on the outer periphery of the bottom surface, and a synthetic resin shoe sole is integrally attached and molded on the bottom surface of the instep, and the shoe sole is formed. The pin portion integrally formed from the outer peripheral portion of the upper surface of the above is fitted and fixed in the through hole.

In the shoe described above, the diameter of the upper end side of the through hole is formed larger than the diameter of the lower end side thereof, and the shape of the pin portion fitted into the through hole is made to match the internal shape of the through hole. Good.

According to the shoe of the present invention, the peripheral edge of the upper side of the upper which is formed into a substantially shoe shape is hung and attached to the bottom surface of the insole that closes the bottom opening of the upper, and is attached to the bottom of the insole. A groove is formed along the outer peripheral portion, and a through hole that communicates between the shoe sole side and the inside of the shoe through the groove is formed at an appropriate position on the outer peripheral portion of the bottom surface of the insole, and A synthetic resin shoe sole is integrally adhered to the bottom surface of the instep, and a fixing portion is integrally formed on the outer peripheral surface of the upper surface of the shoe sole, the fixing portion penetrating through the through holes and fitted in the groove. Is.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A shoe a1 shown in FIG. 1 to FIG. 3 is a soccer shoe, and includes a leather upper 1, an insole 2 that closes a bottom opening of the upper 1, and a bottom of the upper 1 and the insole 2. It is constituted by a shoe bottom 3 made of synthetic resin which is fixed.

The upper 1 is made by cutting a leather material such as cow or kangaroo according to the shape of each part of the shoe and sewing the leather of each part together with the lining to form the upper 1 with the shoe sole opening. . The upper 1 sewn as described above is bent in a state in which the peripheral edge portion on the shoe sole side is hung inside and shaped into a substantially shoe shape, and then the inside of the upper hanging portion 1a is sewn. The insole 2 is fitted in the opening, and the above-mentioned upper skin hanging portion 1a is adhered along the peripheral edge of the bottom surface of the insole 2.

The upper 1 and the insole 2 configured as described above
A sealing sheet 4 made of cloth is attached to the bottom surface of the above, and buffing is performed on the surface of the upper part suspending portion 1a, and a shoe bottom 3 made of synthetic resin is fixed. The buffing described above is preferably performed to further improve the fixing force of the sole 3, but according to the present invention, the buffing described above can be omitted.

The shoe sole 3 is injection-molded in a state where a molding die is fitted to the bottoms of the upper 1 and the midsole 2 so that the sole 3 and the bottom 2 of the upper 1 are simultaneously molded. A stud 3b is projected on the front half and the heel of the bottom surface of the shoe sole 3.

As shown in FIG. 2, a through hole 5 having an appropriate diameter, for example, a diameter of about 4 mm, is formed in the toe portion and the heel portion of the outer periphery of the insole 2 to which the upper suspension portion 1a is bonded as described above. To drill. The through holes 5 are holes that connect the bottom surface side and the upper surface side of the above-mentioned upper shell hanging portion 1a and the insole 2 to each other. In the case of the present embodiment, three holes are provided at the tip of the toe and two holes are provided at both sides of the toe portion.
One through hole 5 is formed in each of the heels.

On the other hand, cylindrical pin portions 7 are integrally projected at the portions corresponding to the through holes 5 on the upper surface of the shoe sole 3, and these pin portions 7 are fitted into the through holes 5 and fixed. is there. Therefore, as described above, each pin portion 7 that integrally projects from the shoe sole 3 is inserted into the through hole 5 that is formed in the upper shell suspending portion 1a and the insole 2 at a strong point of strength so that the binding force is obtained. As a result, the shoe sole 3 can be firmly fixed to the upper shoe hanging portion 1a and the insole 2. The positions and numbers of the pin portions 7 and the through holes 5 and the thickness thereof are not limited to those described above, and any number may be provided at any position if necessary. By the way, it is preferable that a large number of the pin portions 7 are arranged in the toe portion at relatively narrow intervals, especially in a soccer shoe in which the strength of the toe portion is required. Similarly, in the case of golf shoes, it is advisable to arrange a large number of pin portions 7 along the inner portion of the step.

An insole 6 is laid inside the shoe constructed as described above to cover the upper surface of 2. The above-mentioned pin portions 7 are configured to be fitted and inserted substantially perpendicularly to the upper shell hanging portion 1a and the insole 2, respectively.
May be projected obliquely like the pin portion 7 of the shoe a1 ′ shown in FIG. 4, and in this case, the force applied from the side to the shoe sole 3 and the direction of each pin portion 7 oppose each other. The resistance force due to the coupling of the pin portions 7 can be exhibited more effectively.

The shoes a2 and a3 shown in FIGS. 5 and 6 are
Although it has the same structure as the shoe a1 described above, the pin portion protruding from the shoe sole 3 and the shape of the through hole into which the pin portion is inserted are different. A shoe a2 shown in FIG. 5 is formed by forming a pin portion 7 ′ protruding from the shoe sole 3 into a substantially rivet shape.

The above-mentioned pin portion 7'is formed by forming a large-diameter head portion 7b at the upper end portion of a pin 7a which integrally projects from the shoe sole 3, and which is drilled in the upper skin hanging portion 1a and the insole 2. It is fitted and inserted into the through hole 5'provided. Therefore, the pin portion 7'is in a state in which the head portion 7b is fitted into the upper end opening of the through hole 5'from above, and the head portion 7 becomes a large diameter portion.
The retaining force by b further strengthens the coupling force between the pin portion 7'and the through hole 5 ', and this coupling force firmly fixes the shoe sole 3 to the upper skin hanging portion 1a and the insole 2. be able to.

A shoe a3 shown in FIG. 6 has a pin portion 7 '' protruding from the shoe sole 3 formed into a substantially wedge-shaped cross section. The above-mentioned pin portion 7 '' is formed by making the diameter of the upper end portion of the pin integrally projected from the shoe sole 3 larger than the diameter of the lower end portion to form a substantially wedge-shaped cross section. The shape is matched with the through-hole 5 ″ formed in the skin suspending portion 1a and the insole 2 and fitted therein. Since the pin portion 7 ″ described above is formed in a substantially wedge shape in cross section so as to prevent the through hole 5 ″ from coming off, the pin portion 7 ′ and the through hole 5 ″ are similar to the pin portion 7 ′ described above. It is possible to strengthen the coupling force between the shoe sole 3'and the shoe sole 3 and to firmly fix the shoe sole 3 to the upper shell hanging portion 1a and the insole 2.

The shape of the pin portion and the through hole protruding from the shoe sole 3 is the above-mentioned pin portion 7 ', 7 ", through hole 5',
The shape is not limited to the 5 '' shape, and any shape may be used as long as the diameter of the upper end portion of the pin portion is larger than the diameter of the lower end portion and has a retaining effect on the through hole. It may be.

In the shoe a4 shown in FIGS. 7 and 8, a fixing portion 8 composed of a pin 8a and a belt 8b is integrally formed along the outer peripheral surface of the upper surface of the sole 3. Pin 8a of the fixing portion 8
Is to be inserted into the through-hole 5 formed in the instep upper suspension part 1a and the insole 2, and the toe part and the heel part on the outer peripheral surface of the upper surface of the shoe sole 3 are each projected three at a time. At the same time, protrusions are formed on the remaining outer peripheral portion at regular intervals.

Further, as described above, between the pins 8a scattered along the outer peripheral surface of the upper surface of the shoe sole 3, the band 8b is formed so as to extend between the upper ends of the pins 8a. .
As shown in FIG. 8, the strip 8b has an annular shape similar to the outer peripheral shape of the shoe sole, and is integrally connected to each pin 8a, and is formed along the outer peripheral portion of the upper surface of the insole 2a. It is fitted inside.

In the shoe a4 constructed as described above, the upper skin hanging portion 1a and the outer peripheral portion of the insole 2 are sandwiched between the outer peripheral portion of the shoe sole and the band member 8b fitted in the groove 2a, and these are further The pin 8a is inserted through the through hole 5, and is joined to each other through the pin 8a to form a fixing portion 8 that is integrated with the shoe sole 3 to form a stitching structure similar to Mackay sewing. As a result, the upper skin hanging portion 1a and the midsole 2 and the outer peripheral portion of the shoe sole 3 can be firmly bonded to each other, and the durability is also excellent.

Next, a method of manufacturing the shoes a1 to a4 described above will be described. First, the manufacturing method of the shoe a1 will be described with reference to FIGS.
5 will be described. The upper 1 is formed by sewing a cut leather material corresponding to the shape of each part of the shoe together with a cushioning material and a lining material. Since the upper after sewing does not yet have the shape of a shoe, the outer periphery of the shoe is folded by heating and pressurizing it with the peripheral edge of the shoe bottom side folded inward with a mold for forming a habit, so that the outer shape of the target shoe can be obtained. Shape it. The upper 1 shaped as above is
As shown in FIG. 9, the last c formed in a foot shape is put on from above and attached. The last c is supported in an upside down state, and the bottom 2 is placed with the insole 2 in close contact therewith.

As shown in FIG. 10, the upper 1 mounted on the last c to which the insole 2 is fixed has the upper suspension part 1a suspended from the outer periphery of the insole 2 and bonded. Apply the agent and bond.

Next, as shown in FIG. 11, a sealing sheet 4 made of a coarse cloth material is adhered to the bottom of the insole 2 exposed to the upper shell 1a. Incidentally, according to the manufacturing method of the present invention, it is possible to obtain a sufficient fixing force without buffing the upper skin hanging portion 1a, but at this stage, the upper skin hanging portion 1a By performing buffing along the surface, the fixing force of the shoe sole 3 can be made more complete.

As shown in FIG. 12, the upper skin hanging portion 1
A through hole 5 is formed in a required portion of a by a punch or the like. The through hole 5 is formed in such a manner that the bottom surface side of the upper shell hanging portion 1a and the upper surface side of the insole 2 are communicated with each other. Further, the upper end opening of the through hole 5 is closed in a sealed state by contacting the bottom surface of the last c. The through holes 5 are formed by focusing on the toe portion and the heel portion where a large force is applied to the sole 3. The step of forming the through holes 5 may be performed before or after the above-described buffing and bonding work of the sealing sheet 4. By the way, in the present embodiment, the width of the upper skin hanging portion 1a is set to about 18 mm to 20 mm, and the through hole 5 is 8 m from the outer peripheral portion of the upper skin hanging portion 1a.
It is provided in a portion located inside by about m to 10 mm.

Next, the upper 1 having the insole 2 attached thereto as described above is set in the molding tool b for molding the sole with the last c mounted (FIG. 13). Mold b
Injects a shoe sole 3 made of urethane resin on the bottoms of the upper 1 and the insole 2 described above. The molding die b is composed of a lower die b1 forming a bottom surface portion of the shoe sole 3 from which the stud protrudes, and an upper die b2 forming an outer peripheral surface portion between the periphery of the shoe sole and the outer circumference of the upper. The upper mold b2 is divided into left and right parts from the center, and is divided into left and right parts in close contact with the upper surface of the lower mold part b1 (FIGS. 13 and 14).

The upper 1 mounted on the last c is fixed directly above the cavity b1 'of the lower mold b1 with a gap corresponding to the thickness of the shoe sole 3 and, at the same time, alignment in plan view. Also do. Immediately after that, both upper molds b2 move from the left and right to align with the upper surface of the lower mold b1. In this state, both upper molds b2 are in close contact with the upper surface of the lower mold b1, and also in close contact with the outer peripheral surface of the bottom surface of the upper 1 attached to the last c. As a result, a space for molding the shoe sole 3 is formed between the bottom surface of the upper 1 and the cavity b1 ′ of the lower mold b1.

Next, the molten resin is injected into the molding die b to fill the molding space with the molten resin. The molten resin injected into the molding space adheres to the upper skin hanging portion 1a and the bottom surface of the insole 2 to which the sealing sheet 4 is adhered, and at the same time, to the upper skin hanging portion 1a and the inner sole 2. It flows into each of the drilled through holes 5 and is filled up to the upper end opening of the through holes 5 to form the pin portion 7 (FIG. 13).

After a certain period of time, both upper molds b2 are divided into left and right parts,
The shoe sole 3 is removed from the lower mold b1. The demolded product is finished by cutting off unnecessary parts protruding from the injection hole part of the sole 3 (FIG. 15). The shoe a1 manufactured as described above has a shoe sole 3
The pin portion 7 formed by the resin flowing into the through hole 5 is fitted and fixed in the through hole 5 to exert a binding force. The adhesive force applied to the through holes 5 described above can improve the fixing force of the pin portion 7 to the through holes 5. Further, the inner diameter of the through hole 5, that is, the outer diameter of the pin portion 7 and the number thereof are deeply related to the fixing force of the shoe sole 3 and the resistance to the pulling load. For example, in order to increase the fixing force of the shoe sole 3, it is better to provide a large number of through holes 5 and pin portions 7 having a relatively small diameter, and in order to counter the large drag force of pulling out the pin portions 7, the above-mentioned method is used. It is preferable to use a pin 7 having a large diameter.

Next, the shoes a2 shown in FIG. 5 and FIG.
A method for manufacturing a3 will be described. The shoes a2 and a3 can be manufactured in the same manner as the manufacturing method of the shoe a1 described above. Therefore, the description overlapping with the shoe a1 will be omitted. Shoes a2
For a3, it is necessary to form the through holes 5'and 5 '' into a flat nail shape and a wedge shape in cross section, respectively. Therefore, shoes a2, a
3, the rivet-shaped and wedge-shaped through holes 5 ′, 5 ″ are drilled from the upper surface side of the insole 2 before the insole 2 is fixed to the bottom surface of the last c as shown in FIG. Set up. For this work, a punching device having a dedicated punch of the above shape is used. Further, the insole 2 is fixed to the bottom surface of the last c with the top surface facing the bottom surface of the last c.

Then, the two shoes a2, a3 have the insole 2 after the upper part suspending portion 1a is bonded as shown in FIG.
A hole having the same diameter as the lower end opening of the through holes 5 ', 5''is formed by using a punch or the like in the upper skin hanging portion 1a for covering the upper end openings of the respective through holes 5', 5 '', The through holes 5'and 5 '' are in communication with each other. After that, the same injection molding as that shown in FIGS. 13 and 14 is performed, so that the through holes 5 ′,
It is possible to manufacture shoes a2, a3 having rivet-shaped and wedge-shaped cross-section pin portions 7 ', 7''in which 5''is filled with synthetic resin from the shoe sole 3 side. The shape of the pin portion is not limited to that described above, and the shape of the head portion of the pin portion can be changed by changing the shape of the through hole punched by the punch, for example, as shown in FIG. It is also possible to form a cross shape as shown by'a 'or a substantially radial shape as shown by a pin portion 7'b shown in FIG. in this case,
After forming a through hole in the peripheral portion of the insole 2, the upper end opening of the through hole is struck by a punch having the above-described shape, thereby forming a cross-shaped or substantially radial concave portion on the upper part of the through hole.

Next, a method of manufacturing the shoe a4 shown in FIGS. 7 and 8 will be described. The shoe a4 can also be manufactured in the same manner as the method for manufacturing the shoe a1 described above. Therefore, similar to the above, the description of the process overlapping with the shoe a1 is omitted. Shoes a
In addition to the through hole 5, it is necessary to form the concave groove 2a on the upper surface of the insole 2. Therefore, in the shoe a4, the concave groove 2a is formed along the outer peripheral surface of the upper surface of the insole 2 by using a press or a cutting device before fixing the insole 2 to the bottom surface of the last c. . The insole 2 is fixed to the bottom surface of the last c with the concave groove 2a facing the bottom surface of the last c.

As shown in FIG. 12, the shoe a4 has a through hole 5 formed along the concave groove 2a of the insole 2 after the upper skin suspending portion 1a is bonded, and the through hole 5 and the concave groove are formed. The bottom surface of 2a is in communication. The shoe a4 is then subjected to the same injection molding as in the case shown in FIGS. 13 and 14, so that the molten synthetic resin injected into the mold has the through holes 5 from the molding space for molding the shoe sole 3. And further flows into the groove 2a to form the fixing portion 8 that is integral with the shoe sole 3.

In the shoe a4 manufactured as described above, the resin of the shoe sole 3 flows into the through hole 5 and the concave groove 2a to form the fixing portion 8. The fixing portion 8 is formed by the upper portion suspending portion 1a and the insole. Two
You get a very strong bond by biting into. In the shoe a4 described above, the annular fixing portion 8 having substantially the same shape as the outer peripheral shape of the shoe is formed by providing the concave groove 2a over the entire outer peripheral portion of the upper surface of the insole. The fixing portion may be configured by partially dividing it, such as a toe portion of a shoe to which a large load is applied, an immediate portion, and a heel portion, like a fixing portion 8 ′ shown in FIG.
In this case, the fixed portion 8'is configured so that the upper ends of the plurality of pins 8a are connected by the strip 8b.

[0040]

As described above, according to the manufacturing method of the present invention, a through hole is formed in the outer periphery of the bottom of the insole where the peripheral edge of the upper is suspended, and the synthetic resin is injected into the molding die. Since the shoe sole is molded, the synthetic resin injected into the mold to mold the shoe sole is injected into the through hole and molded into a pin shape, so that the synthetic resin adheres to the bottom of the upper. Along with the force, the pin portion that integrally projects from the shoe sole is fitted and fixed in the through hole, and the binding force can firmly fix the upper and the midsole to the outer peripheral portion of the shoe sole. it can.

In the manufacturing method according to the second aspect, the diameter of the upper end side of the through hole formed in the outer peripheral portion of the upper and the insole is formed to be larger than the diameter of the lower end side thereof. Further, it is possible to realize a coupling structure in which the pin portion integrally protruding from the outer peripheral portion of the shoe sole is formed in a substantially wedge shape or a rivet shape, and the pin portion is fitted into the through hole on the upper side without any trouble. The slip-out prevention caused by the large-diameter portion of the pin portion enables the upper skin and the inner sole to be more firmly fixed to the outer peripheral portion of the shoe sole.

In the manufacturing method according to the third aspect, the synthetic resin for molding the shoe sole passes through the through hole and is injected into the groove formed in the outer peripheral portion of the bottom surface of the insole to be hardened. A hindrance to the structure in which the shoe sole formed on the bottom surface side of the sole and the belt-shaped portion formed in the concave groove on the upper surface side of the insole are integrally coupled via the pin-shaped portion inserted into the through hole This can be achieved without any difficulty, and thus the upper and the inner soles and the outer peripheral portion of the shoe sole can be extremely firmly fixed to each other.

According to a fourth aspect of the present invention, since the pin portion integrally projected from the shoe sole is fitted and fixed to the through hole formed in the outer periphery of the upper and the inner sole, the shoe is fixed. The upper and the insole and the outer periphery of the shoe sole can be firmly fixed to each other via the coupling force between the pin portion and the through hole, and a very strong force against the shoe sole such as a soccer shoe. Even when the pressure is applied, it is possible to effectively reduce the problem that the outer peripheral portion of the shoe sole is peeled off from the upper surface and the bottom surface of the insole.

In the shoe according to claim 5, the diameter of the upper end side of the through hole is formed larger than the diameter of the lower end side, and the shape of the pin portion fitted into the through hole is the through hole shape. Since the substantially wedge-shaped or rivet-shaped pin portion is fitted into the through hole in a shape-matched state and the large-diameter portion of the pin portion prevents the upper portion and the insole from being removed. The outer periphery of the shoe sole can be more firmly fixed.

According to a sixth aspect of the present invention, a fixing portion is integrally formed with a shoe bottom made of synthetic resin which is formed by pasting on the upper surface of the instep and the bottom surface of the insole. Since it penetrates through the through hole of the part and is fitted in the groove formed on the upper surface side of the insole, the outer circumference of the upper and the insole are fitted in the outer circumference of the shoe sole and the groove. Since it is configured to be sandwiched by the fixing portion and further joined through the through hole portion of the fixing portion, it is possible to firmly fix the upper and the midsole to the outer peripheral portion of the shoe sole.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a shoe embodying the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a vertical cross-sectional view showing a shoe with a pin portion obliquely protruding.

FIG. 5 is a vertical sectional side view showing a toe portion of a shoe including a rivet-shaped pin portion.

FIG. 6 is a vertical cross-sectional side view showing a toe portion of a shoe including a wedge-shaped pin portion.

FIG. 7 is a longitudinal sectional view showing a shoe in which a fixing portion is provided on the outer peripheral portion of the shoe sole.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a perspective view showing a state in which the upper is attached to the last with the insole fixed.

FIG. 10 is a perspective view showing a state in which the hanging portion of the upper is adhered to the insole.

FIG. 11 is a perspective view showing a state in which a sealing sheet is attached to the bottom surface of the upper.

FIG. 12 is a perspective view showing a state in which through holes are formed in the upper shell hanging portion and the insole.

FIG. 13 is a vertical cross-sectional side view showing a state in which the upper is attached to a mold and the shoe sole is injection-molded.

FIG. 14 is a vertical cross-sectional front view of the upper and the molding die.

FIG. 15 is a perspective view showing the released shoe.

FIG. 16 is a cross-sectional plan view showing a shoe in which a fixing portion is divided into a toe portion of a shoe sole, both sides and a heel portion.

FIG. 17 shows a modification of the head shape of the pin part,
(A) is a perspective view showing a pin portion having a cruciform head portion,
FIG. 6B is a perspective view showing a pin portion having a substantially radial head portion.

FIG. 18 is a perspective view of a conventional instep showing a state after being suspended.

FIG. 19 is a vertical sectional side view of a conventional shoe.

[Explanation of symbols]

 a1 to a4 ... Shoes b ... Mold c ... Last 1 ... Upper 1a ... Suspension part 2 ... Midsole 2a ... Recessed groove 3 ... Sole 5 ... Through hole 7,7,7 '' ... Pin part 8 ... Fixing part

Claims (6)

[Claims] 1. After sewing, a shoe upper shaped into a shoe shape is attached to the last, and a peripheral edge of the upper side of the shoe upper is hung on the outer periphery of the bottom of the insole fixed to the bottom of the last. Attach a desired number of through holes for communicating the shoe sole side with the inside of the shoe at appropriate places on the outer periphery of the bottom surface of the insole, and apply a molding die for shoe sole molding to the bottom portion of the upper. The method for manufacturing a shoe is characterized in that the synthetic resin melted is injected into the molding die in a hermetically sealed manner. 2. After sewing, the shoe upper shaped into a shoe shape is attached to the last, and the peripheral edge of the upper side of the shoe upper is hung on the outer periphery of the bottom of the insole fixed to the bottom of the last. Attach a required number of through holes for communicating the shoe sole side with the inside of the shoe at appropriate locations on the outer periphery of the bottom surface of the insole, and make the diameter of the upper end side of this through hole larger than the diameter of the lower end side. A shoe which is formed by placing a molding die for molding a shoe sole on the bottom surface of the upper and sealingly mounting the molding die, and injecting the molten synthetic resin into the molding die. Method. 3. The insole having a groove formed along the outer periphery of the upper surface is placed on the bottom of the last, and after sewing, a shoe shaped into a shoe shape is attached to the last, and the shoe on the upper The bottom side peripheral part is hung on the outer peripheral part of the bottom surface of the insole and attached,
A required number of through holes are provided at appropriate locations on the outer periphery of the bottom surface of the insole so that the shoe sole side communicates with the inside of the shoe and communicates with the recessed groove.
A method for manufacturing a shoe, characterized in that a molding die for molding a shoe sole is applied to the bottom surface of the instep to be mounted in a hermetically sealed manner, and molten synthetic resin is injected into the molding die. 4. A shoe bottom side peripheral portion of an upper that is formed into a substantially shoe shape is hung and attached to an outer periphery of a bottom surface of an insole that closes a bottom opening of the upper, and the outer periphery of the bottom surface of the insole is attached. A through hole that connects the shoe sole side and the inside of the shoe is formed at an appropriate location, and a synthetic resin shoe sole is integrally attached and molded to the bottom surface of the upper, and the outer peripheral portion of the upper surface of the shoe sole is formed. A shoe in which a pin portion integrally formed by projecting from is fitted and fixed in the through hole. 5. The diameter of the upper end side of the through hole is made larger than the diameter of the lower end side, respectively, and the shape of the pin portion fitted into the through hole is made to match the internal shape of the through hole. The shoes described in 4. 6. A shoe bottom side peripheral portion of an upper formed into a generally shoe shape is hung and attached to a bottom surface of an insole that closes a bottom opening of the upper, and is adhered along the outer peripheral portion of the bottom surface of the insole. While forming a concave groove, at the appropriate place in the outer peripheral portion of the bottom surface of the same insole, to form a through hole that communicates the shoe sole side and the inside of the shoe through the concave groove,
In addition, a sole made of synthetic resin is integrally attached and molded on the bottom surface of the upper, and a fixing portion which is fitted into the concave groove penetrating the through holes is integrally formed on the outer peripheral portion of the upper surface of the sole. Molded shoes.