WO2019160170A1

WO2019160170A1 - Shoe sole having double structure

Info

Publication number: WO2019160170A1
Application number: PCT/KR2018/001892
Authority: WO
Inventors: 박문환
Original assignee: 박문환
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2019-08-22

Abstract

The present invention relates to a shoe sole having a double structure. To this end, a shoe sole having a double structure according to an embodiment of the present invention is a shoe sole for attaching thereto the upper of a shoe manufactured by a Bologna method, and comprises: a cushioning sole wherein an arch protrusion is formed in an arch portion to correspond to the shape of a foot, a cushioning protrusion is formed in a heel portion, and the cushioning sole has a Shore A hardness of 20 to 40; and an outer sole surrounding the side and bottom of the cushioning sole and having a Shore A hardness of 50 to 95. Therefore, the shoe sole formed to have a double structure can secure the durability through the double structure, can reduce, through ergonomic design of the shoe sole shape, the fatigue feeling that may occur during walking or standing, and has a beneficial effect on the health of a foot.

Description

Double shoe sole

The present invention relates to a shoe sole of a dual structure, and more particularly, in the sole for bonding the upper of the shoe manufactured by the Bologna method, the buffer window and the buffer window is formed in which the arch protrusion is formed so as to correspond to the shape of the foot It relates to a shoe sole of a dual structure comprising an outer window formed by the road.

Typically, the shoe is provided with a sole (out-sole) to the bottom plate, the mid-sole (mid-sole) is formed on the upper portion, and the upper by joining the upper portion of the midsole to complete the shoe. At this time, the upper portion of the midsole may be optionally provided with an insole (in-sole).

On the other hand, in addition to the above-described manufacturing method of the shoe as a method of manufacturing a shoe known as the Bologna method, the upper is formed so as to be integrally provided with a portion to be the bottom body and the upper body, and the bottom and the upper body of the upper is sealed There is a method of manufacturing a shoe, and as an invention applying the method of manufacturing a shoe of the Bologna method, there is Korea Patent Publication No. 2001-0049701 (June 15, 2001).

The Bologna-type shoe manufacturing method is provided with a shoe sole separately, the upper and the upper body is integrally sealed or heat-bonded to the shoe sole. Therefore, the shoe sole is formed of an integrated window made of a high hardness material, not a double coupling structure of the sole and the midsole like a conventional shoe.

As shoes manufactured in the Bologna method, nursing shoes, working shoes, and telephones capable of energizing are commonly produced, but in recent years, their application fields have become very wide.

On the other hand, the shoes produced by the Bologna method using a thick sole of a high hardness material, the wearer easily felt tired even in a short walk or standing, there was a problem that often occurs blisters and callus in the feet.

The present invention has been made to solve the above problems, to form a shoe sole of a shoe manufactured by the Bologna method in a double structure to ensure durability while designing its shape ergonomically to reduce the fatigue caused during walking or standing The purpose is to provide a dual-structured sole that is beneficial to the health of the foot.

In the sole structure (S) of the dual structure according to the present invention, in the sole for joining the upper of the shoe manufactured by the Bologna method, the arch protrusion (11) is formed in the arch portion (a) to correspond to the shape of the foot, the heel A buffer protrusion 12 is formed in the portion h, and the buffer window 10 having 20 to 40 (Shore A hardness standard) surrounds the side and the bottom of the buffer window 10, but 50 to 95 It characterized in that it comprises an outer window (20) having (Shore A hardness standard).

In addition, the buffer window 10 has a shape that gradually increases from the forefoot portion (f) toward the heel (h), the outer window 20 and the outer wall portion 21 surrounding the side of the buffer window (10) and Consisting of the bottom portion 22 for supporting the bottom surface, the bottom portion 22 may have a shape that is gradually lowered toward the heel (h) in the forefoot (f).

In addition, the outer wall portion 21 is composed of a horizontal bonding surface 21a for joining the upper and a vertical bonding surface 21b formed perpendicular to the outer edge of the horizontal bonding surface 21a, the horizontal bonding surface ( 21a) may be formed equal to or lower than the outer edge of the buffer window 10.

In addition, the buffer window 10 is formed on both bottom surfaces of the arch portion (a) is formed with a pair of flow preventing grooves 13 whose width gradually widens toward the heel (h), the outer window 20 Bottom portion 22 of the) may be formed with a flow preventing protrusion 23 to be inserted into the flow preventing groove 13 on both upper surfaces of the arch (a).

In addition, the buffer window 10 has a stepped portion 14 formed on a bottom surface between the arch portion a and the heel portion h, and the bottom portion 22 of the outer window 20 is the arch portion a. Stepped groove 23 may be formed on the upper surface between the heel portion h to correspond to the stepped protrusion 14.

The present invention forms a dual structure consisting of a low hardness buffer window formed with an arch protrusion and a buffer protrusion and a high hardness outer window enclosing it so as to correspond to the shape of the foot to secure durability while designing the shape by ergonomically walking or standing. Fatigue can be reduced, and the health of the foot is beneficial.

In addition, the thickness of the buffer window is gradually thickened from the forefoot to the heel, so that the heel of the wearer working for a long time can stably support the load of the body, thereby reducing fatigue and further improving the feeling of wearing. There is.

Furthermore, the outer wall portion of the outer window is composed of a horizontal joining surface and a vertical joining surface, and provides an adequately sufficient double surface area for joining the upper, whereby there is an advantage that efficient joining is possible.

At this time, the buffer window and the horizontal joint surface may be formed to have the same height so as to prevent blisters or calluses from occurring on the feet, thereby improving a feeling of wearing.

In addition, the buffer window is formed on both sides of the bottom flow prevention groove, the flow prevention groove is seated on the flow prevention protrusion of the outer window by the left and right flow and the front and rear flow applied when walking the buffer window is deteriorated or its durability is reduced. There is an advantage that can be prevented.

In particular, the flow preventing groove can stably support the buffer window from the pressure applied to the rear when walking by a pair of grooves whose width gradually widens.

In addition, the buffer window is formed with a stepped protrusion on the bottom surface, the outer window is formed with a stepped groove can effectively block the phenomenon of lifting the thin forefoot by the relatively thick thickness of the buffer window heel portion.

1 is a perspective view showing a shoe sole of a dual structure according to a first embodiment of the present invention.

Figure 2 is a perspective view, elevation and sectional view showing a buffer window of the sole according to the first embodiment of the present invention.

Figure 3 is a perspective view and a sectional view of the outer window of the sole according to the first embodiment of the present invention.

Figure 4 is an exploded perspective view of a shoe sole according to a first embodiment of the present invention.

5 is a perspective view and a cross-sectional view of the shoe sole according to the first embodiment of the present invention.

6 is a perspective view, an elevation view, and a sectional view showing a buffer window of a shoe sole according to a second embodiment of the present invention;

Figure 7 is a perspective view and a sectional view of the outer window of the sole according to a second embodiment of the present invention.

8 is an exploded perspective view of a shoe sole according to a second embodiment of the present invention.

9 is a perspective view and a cross-sectional view of the shoe sole according to the second embodiment of the present invention.

Preferred embodiments of the present invention will be described in detail with reference to the drawings.

On the other hand, the 'Bologna method' as defined in the present invention is a method of manufacturing a shoe, the shoe sole is provided separately, and the upper and the upper body integrally formed on the shoe sole is sealed or thermally bonded.

Accordingly, the sole of the 'Bologna method' is generally formed of an integrated sole of a high hardness material, rather than a double coupling structure of the sole and the midsole like a normal shoe, and thus, a thick sole of a high hardness material is used. Bar, walking or standing for a short time, the wearer was easily tired, there were frequent problems of blisters and callus in the feet.

Accordingly, the present invention is formed to correspond to the shape of the foot as shown in Figure 1, surrounded by the side and bottom of the buffer window 10 and the buffer window 10 having a low hardness, the outer window having a high hardness ( 20).

Specifically, the present invention surrounds the side and bottom of the buffer window 10 having the 20 to 40 (Shore A hardness standard) and the buffer window 10, the outer window having a 50 to 95 (Shore A hardness standard) 20), it is possible to reduce the fatigue caused during walking or standing while sufficiently securing the wear resistance and durability required as the sole S.

On the other hand, in the present invention, as shown in Figure 1, the part of the sole corresponding to the shape of the sole is divided into three parts from the front toward the rear to define. The toes to the soles of the soles of the sole are called 'forefoot' and the corresponding sole part is defined as the forefoot (t), and the part where the arch starts and ends after the soles of the soles is called 'arch' The part is defined as the arch part (a), and after the arch is referred to as 'heel' and the corresponding shoe part is defined as the heel part (h).

At this time, the buffer window 10 has an arch protrusion 11 is formed in the arch portion (a) to correspond to the shape of the foot, the buffer protrusion 12 is formed in the heel portion (h). That is, by ergonomically designing the shape of the low hardness buffer window 10, it is possible to reduce the fatigue caused when walking or standing, and can provide benefits to the health of the foot.

Meanwhile, as illustrated in FIGS. 2 and 6, the buffer window 10 may have a shape that gradually increases from the forefoot portion f toward the heel portion h.

That is, by gradually forming the thickness of the buffer window 10 toward the heel portion (h) from the forefoot portion (f), even in the case of a igniter working standing up for a long time, the heel by the thickness of the heel portion (h) Can support the load of the body stably to reduce the fatigue and can further improve the feeling of ignition.

In this case, as shown in FIGS. 3 and 7 corresponding to the shape of the buffer window 10, the outer window 20 is a bottom for supporting the outer wall portion 21 and the bottom surface surrounding the side surface of the buffer window 10. It is composed of a portion 22, the bottom portion 22 may have a shape that is gradually lowered toward the heel (h) in the forefoot (f).

In spite of the shape of the buffer window 10, when the bottom part 22 of the outer window 20 is formed to have a constant thickness, the heel of the pedestrian is relatively raised, and excessive pressure is applied to the forefoot when walking. It will adversely affect the health of the body.

Accordingly, the bottom portion 22 is formed to be relatively low, thereby solving the problem of the heel lift.

In addition, when the height of the heel portion (h) is relatively high, the front buffer protrusion (16) may be formed in the forefoot (h) to provide comfort to the foot from the pressure applied to the forefoot.

On the other hand, the outer wall portion 21 may be composed of a horizontal bonding surface 21a for joining the upper and a vertical bonding surface 21b formed perpendicular to the outer edge of the horizontal bonding surface 21a.

The outer wall portion 21 serves to structurally protect the shock absorbing window 10, and at the same time the upper joint surface 21a and the vertical joint surface 21b so that the upper can be coupled due to the characteristics of the shoe sole produced in the 'Bologna method' ) May be manufactured in a stepped shape.

Thereby, the surface area which can join the outer wall part 21 of the outer side window 20 and an upper can be provided in double, and the upper part and the outer side window 20 can be efficiently joined.

At this time, the horizontal junction surface 21a may be formed at the same or lower than the outer edge of the buffer window 10, and the igniter is between the buffer window 10 and the horizontal junction surface 21a having different hardness by their own weight. Even with your feet, you can prevent blisters and calluses.

Meanwhile, as shown in FIG. 6, the buffer window 10 has a pair of flow preventing grooves 13 whose widths are gradually widened toward the heel h on both bottom surfaces of the arch part a. As shown in FIG. 7, the bottom portion 22 of the outer window 20 has a flow preventing protrusion 23 to be inserted into the flow preventing groove 13 on both upper surfaces of the arch portion a. Can be.

As the flow preventing protrusions 23 of the outer window 20 are seated in the flow preventing grooves 13 of the buffer window 10, the buffer window 10 is separated from the left and right flows and the front and rear flows when walking, or the durability thereof is maintained. There is an advantage that can be prevented from deteriorating.

In particular, the flow preventing groove 13 and the corresponding flow preventing protrusion 23 is formed so that the width is gradually widened, the buffer window 10 is relatively protruded between the flow preventing groove 13 The portion is formed narrower toward the rear. Therefore, it is possible to prevent and stably support the site where the shock absorbing window 10 is pushed backward by the pressure applied to the rear during walking.

2 and 6, the buffer window 10 has a stepped portion 14 formed on the bottom surface between the arch portion a and the heel portion h, as shown in FIGS. 3 and 7. As shown in the figure, the bottom portion 22 of the outer window 20 may have a stepped groove portion 24 formed on the upper surface between the arch portion a and the heel portion h to correspond to the stepped portion 14. .

When the heel portion h of the buffer window 10 is relatively thick, a relatively thin forefoot portion f and an arch portion a may be lifted by the pressure applied during walking.

Thus, by forming the stepped portion 14 in the buffer window 10, and the stepped groove 24 corresponding to the bottom portion 22 of the outer window 20, the buffer window 10 during walking The front of the to prevent the phenomenon of lifting, can be manufactured so as to ensure the durability of the sole (S) of the dual structure even for a long walk.

On the other hand, the sole structure (S) of the dual structure of the present invention first produces a low hardness buffer window 10 through a mold. Thereafter, the buffer window 10 is provided in a separate mold manufactured to form a shape of the outer window 20, and the buffer window 10 is coupled to the outer window 20 by injecting synthetic resin of high hardness. It is to produce a shoe sole (S) of the dual structure.

Accordingly, as shown in FIGS. 2 to 3, a plurality of holes 15 may be formed in the buffer window 10, and a plurality of insertion protrusions may be formed in the outer window 20 by the holes 15. 25) is formed.

As a result, a plurality of inserting protrusions 25 of the outer window 20 are inserted into the plurality of holes 15 of the buffer window 10, thereby ensuring a firm coupling force in forming a double structure.

Sole (S) of the dual structure according to the present invention is not limited to the above embodiments, those skilled in the art without departing from the spirit of the invention claimed in the claims below. If so, it should be regarded as falling within the protection scope of the claims to the extent that anyone can carry out various changes.

Claims

In the sole (S) for joining the upper of the shoe produced in the Bologna way,

An arch protrusion 11 is formed in the arch portion a to correspond to the shape of the foot, and a buffer protrusion 12 is formed in the heel portion h, and the buffer window 10 having 20 to 40 (Shore hardness). And, Sole of the dual structure characterized in that it surrounds the side and bottom of the buffer window (10), having an outer window (20) having 50 to 95 (Shore hardness).
The method of claim 1,

The buffer window 10 has a shape that gradually increases from the forefoot portion (f) toward the heel (h), the outer window 20 is the outer wall portion 21 and the bottom surrounding the side surface of the buffer window (10) Consisting of the bottom portion 22, the bottom portion 22 has a dual structure characterized in that it has a shape gradually lowered toward the heel portion (h) in the forefoot (f).
The method of claim 2,

The outer wall portion 21 is composed of a horizontal bonding surface 21a for joining the upper and a vertical bonding surface 21b formed perpendicular to the outer edge of the horizontal bonding surface 21a, and the horizontal bonding surface 21a. The sole of the dual structure, characterized in that formed in the same or lower than the outer edge of the buffer window (10).
The method of claim 2,

The buffer window 10 has a pair of flow preventing grooves 13 whose width is gradually widened toward the heel portion h on both bottom surfaces of the arch portion a, and the outer window 20 The sole portion 22, characterized in that the flow preventing protrusions 23 are formed to be inserted into the flow preventing groove 13 on both upper surfaces of the arch portion (a).
The method of claim 2,

The buffer window 10 is formed with a stepped portion 14 on the bottom surface between the arch portion (a) and the heel portion (h), the bottom portion 22 of the outer window 20 is the arch portion (a) and The sole of the dual structure, characterized in that the stepped groove 24 is formed on the upper surface between the heel portion (h) to correspond to the stepped projection (14).