KR100742390B1 - The outsole with tunnel-type holes in width direction, and the manufacturing method of the same - Google Patents

Abstract

An outsole with tunnel-type holes in width direction and a manufacturing method thereof are provided to improve resistance against change of the form of the tunnel, and to minimize deterioration of cushion. The outsole with tunnel-type holes in a width direction includes an outsole body(31) and plural tunnel insertion bodies(32). Plural tunnels penetrating in a width direction are formed on the outsole. The lower end portion of the outsole body(31) forms a neck portion(N), and plural tunnels that are open in a lower direction are formed to penetrate in a width direction. The tunnel insertion body(32) is inserted into the inside of each tunnel(H) of the outsole body(31). The lower surface of the tunnel insertion body(32) forms an identical surface along with the bottom surface of the outsole body(31).

Description

The outsole with tunnel-type holes in width direction, and the manufacturing method of the same}

1 is a perspective view of a mold for manufacturing a conventional tunnel sole.

Figure 2 shows the first embodiment of the tunnel type shoe sole of the present invention,

  (A) is a side view,

  (B) is a separate cross section.

Figure 3 is a side view of the second embodiment tunnel-type shoe sole of the present invention.

Figure 4 is a side view of the closing window constituting the third embodiment of the tunnel-type shoe sole of the present invention.

Figure 5 is a side view of the fourth embodiment of the tunnel type shoe sole of the present invention.

6 is a perspective view of the tunnel insert constituting the tunnel-type shoe sole of FIG.

Figure 7 shows an embodiment closing window constituting the present invention tunnel-type shoe sole,

  (A) is a perspective view of a closing window having a bar-shaped tunnel insert fitted inside the tunnel,

  (B) is a perspective view of a closing window having a bar-shaped tunnel insert having a smaller cross-sectional area than the tunnel;

  (C) is a perspective view of the finishing window with protruding tunnel inserts.

Figure 8 is a side view of the fifth embodiment of the tunnel type shoe sole of the present invention.

Figure 9 is a cross-sectional view of an embodiment mold for the sole body manufacturing constituting the present invention tunnel-type shoe sole.

Figure 10 is a cross-sectional view of an embodiment mold for the manufacture of the finishing window constituting the tunnel-type shoe sole of the present invention.

Figure 11 is a plan view of another embodiment of the first mold for manufacturing the sole body constituting the tunnel-type shoe sole of the present invention.

           ((Explanation of symbols for main part of drawing))

      1,1a. Through hole 3. Tape 10. Upper mold

      20. Lower mold 21. Fixed mold 22. Working mold

      31. Soles 32, 32 ', 32 ". 32"'. Tunnel insert

      33. Bottom 34. Finishing window 35. Filling material

      41,42. Mold 41A, 42A. First mold 41B, 42B. 2nd mold

      E. Tunnel forming protrusion G. Tunnel insert groove

      H. Tunnel L. Upper N. Neck

      R, R '. Interior space

The present invention is to improve the cushioning properties by forming a plurality of tunnels penetrating in the width direction in the shoe sole, the sole body formed so that the lower end of the tunnel downward, and a plurality of tunnel inserts that are inserted 1: 1 into each tunnel or The upper surface is tightly coupled to the bottom of the sole body to prevent the lower end of the tunnel, and at the same time, the plurality of tunnel inserts constitute the sole as one of the finishing windows protruding from the upper surface, thereby improving the manufacturing productivity of the sole while preventing the cushioning of the sole from being deteriorated. The present invention relates to a tunnel type shoe sole capable of reducing manufacturing costs and a method of manufacturing the same.

The shoes that have been developed as a person walks have developed dramatically with the development of various new materials with the development of science and technology. Today, shoes for various purposes are suitable for various activities such as walking, mountain, body correction, and specific exercise. Are being made.

In particular, as the importance of health has risen, sports shoes have made great strides, and new materials and structures have been continuously developed. However, in terms of physical health, the first thing to be solved in terms of physical health is breathability and It is a problem of cushioning.

The problem of breathability is that almost all the shoes except slippers have a closed interior space except the upper part where shoes can be removed and taken off in order to achieve the basic purpose of protecting and protecting the feet. Due to the nature of the shoes there are fundamentally inevitable aspects, but the development of various materials with excellent breathability and various ventilation structures suitable for shoes have been developed.

More important in terms of physical aspects than the breathability is cushioning, if the shoes are not cushioned, not only can easily feel the fatigue of the foot, but also the impact of contact with the sole of the shoe and the ground is transmitted to the brain through the spinal cord, which is bad for the body. Shoes must have sufficient cushioning properties because they are known to have no effect.

Although the problem of cushioning has been solved in many parts by the development of various materials having excellent shock absorbing properties, it is not possible to solve all of the problems of cushioning by using only materials having excellent cushioning properties.

In other words, the cushioning properties of the shoes should be dependent on the magnitude of the impact force applied to the shoes. In the case of a simple walking or jogging shoe, the cushioning problem can be solved only by the soft and fluffy material, but such as basketball or volleyball In the case of sports shoes accompanied by movement and jump, it is not easy to solve the problem of cushioning by material alone.In the case of sports shoes, various cushion structures such as an air chamber are applied to the inside of the shoe sole and the cushioning material is excellent Is used in parallel.

As described above, the cushioning properties of the shoes should be different according to the use of the shoes, and in the case of athletic shoes, in particular, the bottom of the shoe sole has to be in contact with the floor in order to improve adhesion to the bottom.

That is, almost all conventional shoes have the entire bottom of the sole touching the floor, and the impact of contact between the sole and the sole of the shoe is transmitted to the brain through the rear end of the sole, the heel, and the spine. Shoes have been developed that incorporate an air cushion inside the heel (Korean Utility Model Publication No. 95-2742) or an elastic body (Korean Registration Utility Model Publication No. 226048). By combining the material with excellent cushioning properties to the part to improve the cushioning of the shoes to be transmitted to the brain to reduce as much as possible.

However, in the case of shoes combined with a separate cushion member such as an airbag, an elastic body, etc. in order to improve the cushioning property of the shoe, that is, shock absorption, as described above, there is a disadvantage in that the productivity is low and the manufacturing cost is increased. Shoes that can achieve the combined effect of the cushion member by changing only the structure of the sole without being developed.

A representative example of the structure of the sole itself is a change in the sole, for example, a plurality of through-holes in the width direction, that is, a tunnel-type shoe sole formed with a plurality of tunnels, for example, Patent No. 144240, " The lightweight shoe sole structure in which the cushion part is formed "is published by Unexamined-Japanese-Patent No. 2001-37961," The manufacturing method of the sneaker sole with a through-hole part. "

The above patents and published patents relate to a sole and a manufacturing method of a plurality of through-hole tunnels penetrating the sole in the width direction, by forming a plurality of tunnels in the sole itself, without a separate cushioning member of the sole The cushioning property is improved, and the sole material is reduced in weight as much as the tunnel content.

However, as the tunnel is compressively deformed by the repeatedly applied deformation force, the cushioning property due to the tunnel may be rapidly deteriorated, and the manufacturing cost and the mold cost are also increased because the manufacturing method and the mold are also complicated.

The tunnel shoe, as shown in Figure 1, by a mold device consisting of a lower mold 20 consisting of a fixed mold 21 and an operating mold 22 and an upper mold 10 covering the lower mold 20. Each tunnel, which is manufactured and is a through-hole penetrating through the sole in the width direction, is formed by the through-protrusions 1 and 1a that protrude from the inner surfaces of the fixed mold 21 and the operating mold 22 to be in contact with each other.

At this time, the tunnel formed by the through projection is a structure that penetrates only in the width direction, and in order to separate the manufactured sole from the mold apparatus, the center of the upper coupling portion of the stationary mold 21 and the operating mold 22 is centered. With respect to the stationary mold 21, the lower end of the working mold 22 must be opened so that the two molds form an inverted "V" shape.

That is, in the conventional mold for manufacturing the tunnel sole, three molds are required, and two types of mold rotations such as the up / down rotation of the upper mold 10 and the left / right rotation of the operating mold 22 are performed. There is a disadvantage in that the mold and the apparatus for controlling the driving thereof are complicated, such as an operation is required.

In addition, in order to prevent the synthetic resin from flowing into the contact surface gap between the two through-holes which are in contact with each other, the entire outer surface of the abutment portion of the two through-holes is wrapped with a tape (3). Since it is impossible or very difficult, there is a problem that manufacturing productivity decreases with increasing labor load.

The present invention was devised to solve the structural shortcomings of the conventional tunnel-type shoe soles and all the problems of the conventional method for manufacturing the same, thereby minimizing cushioning degradation by improving resistance to the deformation of the tunnel. It is an object of the present invention to provide a tunnel-type new outsole and a method for manufacturing the same that can be made, and the equipment cost can be reduced by the simplification of the mold apparatus.

The above object of the present invention is achieved by the separating structure of the sole.

Tunnel type shoe sole of the present invention, the lower end of each tunnel, which is a through-hole formed in the width direction downwards, and inserts the tunnel insert therein so that the tunnel is elastically supported in the up and down direction to prevent the deformation of the tunnel The present invention is characterized in that the tunnel is formed in a downwardly open type rather than a closed type on a cross section so that the tunnel type shoe sole can be manufactured with two pairs of molds instead of three.

Tunnel-type shoe sole of the present invention as described above,

A sole body having a plurality of tunnels passing through the width direction and having a lower opening having a lower end opening therein forming a neck portion;

1: 1 inserted and coupled to each other in a state inside the tunnel, the lower surface is composed of a plurality of tunnel inserts and the like forming the same surface as the bottom of the sole body.

At this time, in order to improve the durability of the sole body, the upper surface is fixedly coupled to the entire bottom surface of the sole body and elastically flexible plate-like bottom body, the upper surface of the bottom body to correspond 1: 1 with each tunnel of the sole body It is also possible to replace the plurality of tunnel inserts with a closing window composed of a plurality of tunnel inserts which are formed integrally or integrally protruding from each other.

That is, a plurality of tunnel inserts are connected by a plate-shaped bottom body, and the finishing window in which the tunnel insert and the bottom body are integrated is coupled to the sole body, thereby improving the shape stability and durability of the entire sole.

In addition, when combining only a plurality of tunnel inserts without a bottom body, it is preferable to change the cushioning properties of the tunnel inserts according to the weight of the shoe wearer while being different from the sole body, for example, the tunnel inserts. By making the cushioning of the body better than the sole body, the tunnel insert first absorbs the initial impact and then the remaining shock is absorbed by the sole.The heavier the weight of the shoe wearer is, the more the cushion insert combines the tunnel insert. It is possible to ensure that the degree of compression is always within a certain range.

In addition, the cushioning, that is, the rigidity of the tunnel insert, gradually increases or decreases as necessary from the front of the sole toward the rear, so that the impact applied to the sole can be sequentially absorbed.

In addition, in the case where only the tunnel insert is coupled to the sole body, the shape of the bar having a longer length than the cross-sectional dimension is preferable so that the tunnel insert is formed in the entire tunnel. In this case, not only one bar type but also a plurality of protrusions arranged along the length of the tunnel may be separated.

And, unlike the case where only the tunnel insert without the bottom body is coupled to the sole body, when the closing window is coupled, the bottom body is fixed to the bottom of the sole and the tunnel insert is stably protruded from the top of the bottom body. At least, the tunnel may be elastically supported in the vertical direction.

Therefore, when the finishing window is used, it is not necessary to make the shape of the tunnel insert fit inside the tunnel.

Method of manufacturing a tunnel-type shoe sole of the present invention having the structure as described above, the step of manufacturing the sole body largely, the step of manufacturing the tunnel insert or the closing window and the sole insert the tunnel insert or the closing window Wherein the step of manufacturing the sole body, the first mold for the sole body having an upper surface that is mated with the bottom of the sole body, the second mold for the sole body to form the same internal space as the outer shape of the sole body Laminating; Injecting and cooling the synthetic resin into the stacked two molds; After separating the two molds and the step of separating the sole body from the first mold.

And, the manufacturing step of the tunnel insert or the closing window, when manufacturing the tunnel insert, the same as the general injection method, when manufacturing the closing window, is almost the same as the manufacturing method of the sole body.

Finally, the step of coupling the upper sole, the lower sole of the sole body manufactured as described above, each of the tunnel insert inserting into the tunnel, or each tunnel insert of the upper surface of the closing window is inserted into the tunnel It is a process of fixing the upper surface of the closing window to the bottom of the sole body.

Details of the effects and the resulting effects, including the object and technical configuration of the present invention will be clearly understood by the following description with reference to the drawings showing a preferred embodiment of the present invention.

2 is a cross-sectional view of the coupling and detachment of the shoe sole of the present invention.

As shown the shoe sole of the present invention,

A sole body 31 having a lower end portion formed therein with a neck portion N and a plurality of downwardly open tunnels H opened through the width direction and having an upper L surrounding the foot on an upper surface thereof;

1: 1 insertion coupled to each inside of the tunnel (H) of the sole body 31, the neck portion (N) is formed at the lower end, a plurality of bottom surface forming the same surface as the bottom of the sole body 31 It consists of the tunnel insert 32.

At this time, in order to increase the structural stability of the sole body 31 and the tunnel insert 32, as shown in Figure 3, the bottom surface of the sole body 31 including the lower surface of the tunnel insert 32 It is also desirable to further tightly couple the sexually flexible plate-shaped bottom body 33.

In addition, when the bottom body 33 is coupled as described above, as shown in FIG. 4, it is also preferable to manufacture a plurality of tunnel inserts 32 in one body on the top surface of the bottom body 33. For convenience, hereinafter, a plurality of tunnel inserts 32 integrally formed on the bottom surface 33 will be referred to as a "deadline window 34".

In the case of using the finishing window 34 in which the bottom body 33 and the tunnel insert 32 are integrally formed as described above, the tunnel insert 32 of the closing window 34 must be formed in the tunnel H. It does not have to be shaped to fit inside.

That is, as shown in FIG. 5, the cross-sectional area of the tunnel insert 32 may be smaller than the cross-sectional area of the tunnel H so that a space is formed between the outer surface of the tunnel insert 32 and the inner surface of the tunnel H. .

 At this time, if necessary, the upper end of the tunnel insert 32 may be in contact with the upper end of the inner surface of the tunnel H, or may be positioned directly under it without contact.

In addition, when only the tunnel insert 32 is used without the bottom 33, the tunnel insert 32 has a relatively long length as compared to the cross-sectional dimension perpendicular to the longitudinal direction, as shown in FIG. It is preferable to manufacture the shape of a bar having a long length, that is, the same length as that of the tunnel. However, when the bottom body 33 and the tunnel insert 32 are combined to be used as the finishing window 34, as shown in FIG. As described above, each of the tunnel inserts 32, as well as the bar-shaped tunnel inserts 32 ', as well as the bar-shaped tunnel inserts 32 ", in which a plurality of non-bar-shaped separates are arranged in the longitudinal direction of each tunnel H You can also make

At this time, each of the lower ends of the bar-shaped tunnel insert 32 'and the projection tunnel insert 32 "is mated with the neck portion N of the tunnel N.

In addition, as shown in FIG. 8, the tunnel insert 32 forms only the neck portion N of the tunnel H, while the inner space of the tunnel N immediately above the neck portion N of the tunnel H. In the state where only the neck portion N is made of a protruding neck-shaped tunnel insert 32 "'so as not to be inserted into it, and the teeth 32"' are adhesively bonded to the neck portion N of the tunnel H, In some cases, the remaining space of the tunnel H may be used as an impact absorbing space such as an air bag, or the remaining space may be filled with a separate filler 35 having a cushioning property.

In the case of the necked tunnel insert 32 ", it may be made in a bar shape or a separate type, but it is more preferable to manufacture a bar shape having the same length as the tunnel N.

And, when the size of the tunnel insert 32 inserted into the tunnel H is smaller than the tunnel H, both sides of the tunnel H so that the tunnel insert 32 is not visible from the outside in order to improve aesthetics. It is also preferable to block the open end with a separate sealing member (not shown) or to extend the side surface of the sole body 31 so as to be blocked.

The shoe sole of the present invention having the structure as described above is manufactured by injecting a synthetic resin, the tunnel (H) that penetrates the sole body 31 in the width direction, forming a closed loop on a cross section perpendicular to the longitudinal direction Unlike the tunnel, since the lower end is open, it is possible to manufacture a pair of upper and lower molds instead of three molds.

In addition, the sole body 31, the tunnel insert 32, the bottom body 33, etc. are made of elastically flexible synthetic resin such as polyurethane, the tunnel (H) or the closing window of the sole body 31 ( Although the narrow neck portion N is also provided in the tunnel forming protrusion or the tunnel insert forming groove for forming the tunnel insert 32 of FIG. 34, the tunnel forming protrusion, the tunnel insert forming groove, etc. It is possible to easily separate the outsole body 31, the closing window 34, etc. injection molded from the provided mold.

That is, as shown in FIG. 9, the mold 41 for the sole body 31 has a plurality of tunnel forming protrusions E having the same shape as each tunnel H so as to be fitted to the bottom of the sole body 31. A first mold 41A for sole body protruding from the first mold; In a state in which the bottom surface is stacked on the first mold 41A so as to be located directly above the tunnel forming protrusion E, the inner space R is formed in the same shape as the outer shape of the sole body 31 and is sealed to the outside except the synthetic resin injection hole. It is composed of a second mold 41B for the sole body forming a).

And, as shown in Figure 10, the mold 42 for the closing window 34, upwardly open tunnel insert forming groove of the same shape as each tunnel insert 32 so as to be combined with the upper surface of the closing window 34. (G) a first mold 42A provided with a plurality of finishing windows; In a state in which the bottom surface is stacked on the first mold 42A such that the bottom surface is positioned directly above the upper surface of the first mold 42A, the inner space R 'is formed to have the same shape as the outer shape of the closing window 34 and is sealed to the outside. It is composed of a second mold 42B for the finishing window.

At this time, when the bottom surface of the second mold 42B for the closing window is in close contact with the upper surface of the first mold 42A for the closing window, only the tunnel insert 32 without the bottom body 33 may be manufactured.

In the case of using the above mold, the sole is made of an elastically flexible material, so in the case of the sole body 31, the neck portion N of the tunnel H is opened while the neck which is the lower end portion of the tunnel forming protrusion E is opened. It can be separated from the portion (N), in the case of the closing window 34, the tunnel insert 32 is compressed so that it can escape from the neck portion (N) of the upper end of the tunnel insert body forming groove (G).

However, the extent to which the maximum width of the tunnel forming projections E and the tunnel inserting grooves G is larger than the width of each neck portion N is the elastic deformation range of the tunnel H and the tunnel insert 32. In the case of deviating, the side wall W standing upright on the upper surface of each first mold is coupled to each second mold, and the sole body 31 or the closing window is formed at each first mold in a state in which each second mold is lifted up. The 34 may be separated by sliding in the left and right directions.

The shoe sole manufacturing method of the present invention using the mold as described above,

The first mold 41A for the sole body and the second mold 41B are stacked, and after the synthetic resin is injected into the internal space R between the first and second molds, the two molds 41A and 41B are separated. A sole body manufacturing step of separating the sole body 31 from the first mold 41A in a state;

The first mold 42A and the second mold 42B for the finishing layer are stacked, and the injection and cooling of the synthetic resin into the internal space R 'between the first and second molds is performed, and then the two molds 42A and 42B are separated. A closing window manufacturing step of separating the closing window 34 from the first mold 42A in a state;

The upper surface of the closing window 34 is fixed to the bottom of the sole body 31 so that each tunnel insert 32 of the upper surface of the closing window 34 is inserted into each tunnel H of the manufactured sole body 31. To combine.

At this time, the coupling of the sole body 31 and the closing window 34, for example, the bottom surface of the sole body 31 and the upper surface of the closing window 34 and the neck portion (N) and tunnel insertion of the tunnel (H) While the neck portion N of the sieve 32 is adhesively bonded, the inner surface of the other tunnel H and the outer surface of the tunnel insert 32 can be brought into a simple insertion coupling state that can flow to each other without bonding. (H) The entire inner surface and the tunnel insert 32 may be made in various ways such as to bond the entire outer surface.

The first and second molds are stacked or separated in the up and down directions, respectively, and thus, unlike the conventional mold apparatus in which three molds moving up, down, left, and right produce one sole, they are shown in FIG. As described above, the inner spaces in which the synthetic resin is injected into each mold are provided at the left and right sides, respectively, one pair, so that two pairs of molds have one pair instead of one, that is, two left and right sole bodies 31. Alternatively, the closing window 34 may be manufactured by one injection, and the first mold and the second mold may be reversed as needed for the upper and lower lamination positions.

In addition, two pairs or more may be manufactured at one time, but in such a case, the installation cost may be excessively increased as the size of the mold and the injection molding machine becomes larger than necessary.

As described above, the tunnel-type shoe sole of the present invention and the manufacturing method thereof, each tunnel formed in the sole body has a downward open structure, each tunnel is elastically supported by the tunnel insert, so that the deformation resistance of the tunnel In addition to being able to absorb the impact more effectively at the same time, there is an advantage that the manufacturing cost can be reduced by improving the productivity because the mold is composed of a pair of upper and lower molds.

Claims (7)

In the sole of the shoe formed a plurality of tunnels penetrating in the width direction, A sole body 31 having a plurality of tunnels H opened downward while the lower end forms the neck portion N; 1: 1 insertion and coupling to form inside each tunnel (H) of the sole body 31, characterized in that the lower surface is composed of a plurality of tunnel inserts 32 forming the same surface as the bottom of the sole body 31 Tunneled shoe sole. In the sole of the shoe formed a plurality of tunnels penetrating in the width direction, A sole body 31 having a plurality of tunnels H opened downward while the lower end forms the neck portion N; The upper surface is tightly coupled to the bottom surface of the sole body 31 and protrudes to the upper surface of the bottom body 33 to be inserted 1: 1 into each of the tunnel (H) elastically flexible plate-like bottom body 33 Tunnel-type shoe outsole, characterized in that it comprises a closing window (34) consisting of a plurality of tunnel inserts (32). The tunnel type shoe according to claim 2, wherein each of the tunnel inserts (32) has a cross-sectional area of not less than the cross-sectional area of each tunnel (H) on a cross section perpendicular to the width direction of the sole body (31). bottom piece. 3. The tunnel insert 32 according to claim 2, wherein each of the tunnel inserts 32 has a bar-shaped tunnel insert 32 'having the same length as each of the tunnels H, and a plurality of the tunnel inserts 32 separated in the longitudinal direction of the tunnel H. A tunnel type shoe sole, characterized in that it is any one of a projection type tunnel insert (32 ") and a neck type tunnel insert (32" ') which is fitted only to the tunnel neck portion (N). The cushion filler 35 is additionally inserted and coupled to the inside of the tunnel H which is located immediately above the necked tunnel insert 32 ". Tunnel soles. 3. The sole of a tunnel type shoe according to claim 2, wherein both open ends of the tunnel (H) are blocked. The first mold 41A for the sole body, in which a plurality of tunnel-forming protrusions E having the same shape as each tunnel H of the sole body 31 protrudes on the upper surface, having a bottom surface which is engaged with the upper surface of the sole body 31. Stacking the second mold (41B) such that an inner space (R) having the same shape as the outer shape of the sole body (31) is formed between the two molds (41A) (41B); Injecting and cooling a synthetic resin into the internal space (R); Tunnel-type shoe outsole, characterized in that it comprises a sole body manufacturing step consisting of separating the two molds (41A) (41B) up and down and then separating the sole body (31) from the first mold (41A) Method of preparation.

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