WO2019024857A1

WO2019024857A1 - Sole structure and method for manufacturing same

Info

Publication number: WO2019024857A1
Application number: PCT/CN2018/097897
Authority: WO
Inventors: 陆一平
Original assignee: 清远广硕技研服务有限公司
Priority date: 2017-08-01
Filing date: 2018-08-01
Publication date: 2019-02-07
Also published as: CN109315877A; TW201909776A

Abstract

The present invention provides a sole structure and a method for manufacturing same. The sole structure comprises a low-elasticity layer, a medium-elasticity layer, and a high elasticity layer. A body of the low-elasticity layer has a first surface and a second surface opposite to each other. The body is provided with multiple holes that run through the first surface and the second surface. The low-elasticity layer has an outer side wall surrounding the body and forms a recessed part. The medium-elasticity layer is disposed in the recessed part and attached to the first surface. The high-elasticity layer is disposed in the holes.

Description

Sole structure and manufacturing method thereof

Technical field

The present invention relates to a sole structure, and more particularly to a sole structure having a composite elastic layer.

Background technique

The shoe provides protection for the user's foot. In addition to providing foot protection, the shoe also stabilizes the foot and provides better contact with the ground. Taking sneakers as an example, although the existing sneaker sole has a lightweight design, it has the problem of being fatigue-resistant and easily deformed. As a result, the user may be at risk of injury. Therefore, the existing sole structure still needs to be improved.

Disclosure of invention

It is an object of the present invention to provide a sole structure that reduces the weight of the shoe body and provides durability.

The sole structure includes a low elastic layer, a medium elastic layer, and a high elastic layer. The body of the low elastic layer has opposing first and second faces. A plurality of holes are formed in the body through the first surface and the second surface. The outer sidewall of the low elastic layer surrounds the body and forms a recess. The middle elastic layer is disposed in the recess and attached to the first surface. A highly elastic layer is filled in the holes.

In an embodiment, the middle elastic layer has a plurality of openings corresponding to the holes.

In one embodiment, the low elastic layer has a plurality of inner ring walls standing on the first surface and surrounding the holes, and the inner ring walls are sandwiched between the middle elastic layer and the high elastic layer.

In an embodiment, the cover layer is further included, and the middle elastic layer is opposite to the outer surface of the first surface and shields the concave portion.

In one embodiment, a carbon fiber sheet is further disposed on the second surface, and the cover layer is a large bottom layer.

In an embodiment, the upper layer is further included and disposed on the second surface.

In one embodiment, the low elastic layer is a polyurethane.

In an embodiment, the middle elastic layer is an upright cotton.

In one embodiment, the high elastic layer is a thermoplastic polyester elastomer.

The method for manufacturing a sole structure comprises the steps of: providing a middle elastic layer having a plurality of openings; pouring a low elastic layer, the low elastic layer being solidified to form a body comprising opposite first and second faces; forming an outer sidewall The inner elastic layer is disposed in the concave portion and attached to the first surface; the body is formed with a plurality of holes corresponding to the opening, and the hole penetrates the first surface and the second surface; and the high elastic layer is disposed on each In a hole in the hole.

In one embodiment, the step of forming the low elastic layer further comprises: forming a plurality of inner ring walls standing on the first surface and forming a hole around the inner ring wall and sandwiching between the middle elastic layer and the high elastic layer.

In one embodiment, the low elastic layer penetrates the medium elastic layer from the contact of the low elastic layer and the middle elastic layer.

In one embodiment, the method further includes the step of: bonding the cover layer to the outer surface of the first elastic layer opposite to the first surface, and covering the layer to shield the recess.

In an embodiment, the method further comprises the steps of: providing a carbon fiber sheet on the second side, and the cover layer is a large bottom layer.

In an embodiment, the method further includes the step of: setting a large bottom layer on the second side.

The advantages and spirit of the present invention will be further understood from the following embodiments and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a bottom plan view of an embodiment of a sole structure of the present invention.

2 is a cross-sectional view of the sole structure corresponding to the sole structure of FIG. 1.

Figure 3 is a flow chart for making a sole structure.

Figure 4 is a top plan view of the sole structure.

5 and 6 are schematic views of a distributed low elastic layer.

7 and 8 are schematic views showing the provision of a highly elastic layer.

Figure 9 is a bottom plan view of another embodiment of the sole structure of the present invention.

Figure 10 is a cross-sectional view corresponding to the sole structure of Figure 9.

Figure 11 is a cross-sectional view showing another embodiment of the sole structure of the present invention.

Figure 12 is a cross-sectional view showing another embodiment of the sole structure of the present invention.

The main component symbol description:

10 sole structure

20 mold

22 peripheral parts

24 stud

110 low elastic layer

110A ontology

110B outer side wall

111 first side

112 second side

114 holes

115 inner ring wall

116 recess

118 top

130 elastic layer

131 outer surface

132 opening

133a, 133b, 133c side

135 bottom

150 high elastic layer

160 overlay

170 carbon fiber sheet

180 large ground floor

190 thimble

H1 height difference

H2 height

The best way to implement the invention

The present invention provides a sole structure having a composite elastic layer to provide a lightweight effect. The sole structure of the present invention can be applied to sports shoes and casual shoes, but is not limited thereto. Please refer to Figure 1. 1 is a bottom plan view of an embodiment of a sole structure 10 of the present invention. As shown in FIG. 1, sole structure 10 includes a low elastic layer 110. The body 110A of the low elastic layer 110 has a second face 112 and a first face 111 on the opposite side (see FIG. 2). A plurality of holes 114 are formed in the body 110A to penetrate the first surface 111 and the second surface 112.

Please cooperate with Figure 2. 2 is a cross-sectional view corresponding to the sole structure 10 of FIG. 1. As shown in FIG. 2, the sole structure 10 includes a low elastic layer 110, a middle elastic layer 130, and a high elastic layer 150. The low elastic layer 110 includes a body 110A. The body 110A includes opposing first and

second faces

111, 112. The middle elastic layer 130 is disposed on a side where the first surface 111 is located. As described above, the body 110A is formed with a plurality of holes 114 extending through the first surface 111 and the second surface 112. The high elastic layer 150 is filled in the holes 114.

In one embodiment, the middle elastic layer 130 is disposed in the recess 116 formed by the first surface 111 of the low elastic layer 110. As shown in FIG. 2, the low elastic layer 110 includes an outer sidewall 110B. At the periphery of the sole structure 10, the body 110A is surrounded by the outer side wall 110B and a recess 116 is formed. The middle elastic layer 130 is disposed in the recess 116 and attached to the first surface 111. Viewed from another angle, the recess 116 is a space formed by retracting from the top end 118 of the outer sidewall 110B toward the first surface 111, and the bottom surface of the recess 116 serves as the first surface 111.

The above low elastic layer, medium elastic layer, and high elastic layer means that materials having different elasticity are used. The high elastic layer or the medium elastic layer means higher resilience relative to the lower elastic layer, and the lower elastic layer can be restored to the original shape after the surface is applied with force. For example, the high elastic layer may be a Thermoplastic Polyester Elastomer (TPEE) which has the characteristics of light weight and fatigue resistance. The medium elastic layer can be upright cotton, which has a lighter weight and provides a comfortable and breathable effect. The low elastic layer may be a polyurethane (PU) which has fatigue resistance. Thereby, the overall weight of the shoe body can be greatly reduced and durability can be maintained. In addition, the use of breathable upright cotton improves the comfort of wearing. Since the upright cotton is environmentally friendly, the sole structure of the upright cotton can also reduce the environmental burden.

Figure 3 is a flow chart for making a sole structure. As shown in Figure 3, the fabrication of the sole structure includes a step S10 of setting the intermediate elastic layer. S20: perfusion of a low elastic layer. S30: The low elastic layer is cured. S40: Set a high elastic layer.

4 is a top plan view of the sole structure 10. As shown in Figures 3 and 4, the sole structure 10 can be formed using a mold 20. The mold 20 includes a peripheral portion 22 and an internal stud 24. The peripheral portion 22 is the contour used to form the sole structure 10. As shown in FIG. 4, the intermediate elastic layer 130 is preliminarily laid in the mold 20. The middle elastic layer 130 has a plurality of openings 132 corresponding to the protrusions 24, and the openings 132 are formed through the protrusions 24 and the middle elastic layer 130 to form the aforementioned holes.

5 and 6 are schematic views of a distributed low elastic layer. As shown in FIGS. 3 and 5, the outer surface 131 of the middle elastic layer 130 is exposed outside the mold 20. Further, the middle elastic layer 130 is supported by the ejector pin 190 such that a height difference H1 is left between the bottom surface 135 of the middle elastic layer 130 and the mold 20. The low elastic layer is poured from the outside of the middle elastic layer 130 (i.e., near the peripheral portion 22 of the mold 20) at the arrow mark to form a low elastic layer.

As shown in a partially enlarged view of Fig. 6, the space between the peripheral portion 22 of the mold 20 and the intermediate elastic layer 130 communicates with the supported space below the middle elastic layer 130 as a perfusion flow path. The low elastic layer is distributed from the outer side of the middle elastic layer 130 through the space supported by the middle elastic layer 130 to be distributed throughout the mold 20. In one embodiment, the infused low elastic layer can be a liquid PU, but is not limited thereto.

In addition, a portion of the low elastic layer will flow upward along the studs 24 of the mold 20. As shown in FIG. 6, the low elastic layer flows into the space between the stud 24 and the middle elastic layer 130, and slightly presses the middle elastic layer 130 laterally. During the extrusion of the intermediate elastic layer 130, the low elastic layer 110 penetrates into the middle elastic layer 130 from the contact between the two to form a bond. Thus, the low elastic layer 110 is pre-treated in the middle elastic layer 130 except for the bottom surface 135 of the middle elastic layer 130 (ie, the side on the thimble) and the side of the middle elastic layer 130 close to the peripheral portion 22 (for example, the side surface 133a). The side on which the hole is formed (for example, the side surface 133b) is also connected to the low elastic layer, that is, the side surface 133a, the bottom surface 135 and the side surface 133b have a low elastic layer 110 which penetrates into the middle elastic layer 130 to form a joint. In this way, the bonding strength between different elastic layers can be improved, and the separation of different elastic layers can be avoided.

7 and 8 are schematic views of the provision of the high elastic layer 150. As shown in FIG. 3 and FIG. 7 , after the low elastic layer 110 is solidified and molded, the space is removed, and the space supported by the thimble under the original middle elastic layer 130 is filled to form the body 110A, and includes the first surface 111 and the second surface 112. . The space between the original middle elastic layer 130 and the peripheral portion of the mold is filled to form the outer side wall 110B. The outer sidewall 110B surrounds the body 110A to form a recess 116. A hole 114 is formed in the first surface 111 corresponding to the position of the original mold stud. As shown in FIGS. 3 and 7, the middle elastic layer 130 has an outer surface 131 opposite to the first surface 111 and has a plurality of openings 132 corresponding to the holes 114. In addition, the low elastic layer 110 has a plurality of inner ring walls 115 standing on the first surface 111 and surrounding the holes 114, that is, the aforementioned low elastic layer 110 flows into the portion between the studs 24 and the middle elastic layer 130 (refer to the figure). 6), the inner ring wall 115 is formed after solidification along the periphery of the stud 24. As shown in the embodiment of FIG. 7, the inner ring wall 115 is sandwiched between the middle elastic layer 130 and the high elastic layer 150. In one embodiment, the height H2 of the inner ring wall 115 from the first face 111 is substantially equal to the distance at which the recess 116 is retracted from the top end 118 of the outer sidewall 110B.

Next, as shown in FIGS. 3, 7, and 8, the high elastic layer 150 is filled in the holes 114. In this embodiment, the extent of the hole 114 from the first face 111 to the second face 112 extends along the inner ring wall 115 to one side of the outer surface 131 of the middle elastic layer 130. In other embodiments, the extent of the aperture 114 from the first face 111 toward the outer surface 131 can be adjusted depending on the size of the high elastic layer 150.

As shown in FIG. 8, after the filling of the high elastic layer 150 is completed, the sole structure 10 is completed. In the case where TPEE is used as the high elastic layer 150, TPEE can be produced by physical foaming. Specifically, high-pressure liquid carbon dioxide is prepared, and then reduced in pressure and introduced into a molten TPEE. The high-speed gaseous carbon dioxide formed after decompression makes the TPEE increase. Finally, cooling is performed to make TPEE. This makes it possible to produce the required materials in a more environmentally friendly manner.

Figure 9 is a bottom plan view of another embodiment of the sole structure 10 of the present invention. Figure 10 is a cross-sectional view of the sole structure 10 corresponding to Figure 9. As shown in FIGS. 9 and 10, the low elastic layer 110 penetrating the middle elastic layer 130 is formed at the position of the middle portion of the foot (corresponding to the range between the two broken lines in FIG. 9), that is, the low elastic layer 110 is from the second surface 112. The inner elastic layer 130 extends to the outer surface 131 of the middle elastic layer 130. Thereby, the side surface (for example, the side surface 133c) of the middle elastic layer 130 around the midfoot portion can be further combined with the low elastic layer 110, that is, the low elastic layer 110 is infiltrated into the middle elastic layer 130 at the side surface 133c to form a joint. In this way, the overall strength can be improved and a good tortuosity effect can be provided.

Figure 11 is a cross-sectional view of another embodiment of the sole structure 10 of the present invention. After the low elastic layer 110, the middle elastic layer 130, and the high elastic layer 150 are completed, the step of bonding the cover layer may be included. As shown in FIG. 11, the sole structure 10 further includes a cover layer 160. The cover layer 160 conforms to the outer surface 131 and shields the recess. In an embodiment, the cover layer 160 may be the same material as the low elastic layer 110, but is not limited thereto. In addition, sole structure 10 also includes a large bottom layer 180. The large bottom layer 180 is disposed on the second side 112. By design, the cover layer 160 can be utilized as a tread surface on the sole side to provide a more average pedaling effect.

Figure 12 is a cross-sectional view of another embodiment of the sole structure 10 of the present invention. As shown in FIG. 12, the difference from the previous embodiment is that the cover layer 160 serves as a large bottom layer. For example, a PU is used as an overlay. In addition, the sole structure 10 further includes a carbon fiber sheet 170. The carbon fiber sheet 170 is disposed on the second surface 112. By designing, the carbon fiber sheet 170 is combined and the cover layer 160 is directly used as the large bottom layer, so that the overall weight is light.

The present invention has been described by the above related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. Rather, modifications and equivalent arrangements are intended to be included within the scope of the invention.

Industrial applicability

The sole structure of the present invention comprises a low elastic layer, a medium elastic layer, and a high elastic layer. The body of the low elastic layer has opposing first and second faces. A plurality of holes are formed in the body through the first surface and the second surface. The outer sidewall of the low elastic layer surrounds the body and forms a recess. The middle elastic layer is disposed in the recess and attached to the first surface. A highly elastic layer is filled in the holes. This structure can reduce the weight of the shoe body and improve durability.

Claims

A sole structure characterized by comprising:

A low elastic layer containing:

a body comprising an opposite first surface and a second surface; wherein the body is formed with a plurality of holes extending through the first surface and the second surface;

An outer side wall surrounding the body and forming a recess;

a middle elastic layer disposed in the recess and attached to the first side;

A highly elastic layer is filled in the holes.
The sole structure of claim 1 wherein the intermediate resilient layer has a plurality of openings corresponding to the apertures.
The sole structure according to claim 1, wherein the low elastic layer has a plurality of inner ring walls standing on the first surface and surrounding the holes, the inner ring wall sandwiching the middle elastic layer and the inner elastic ring layer Between high elastic layers.
The sole structure of claim 1 further comprising a cover layer that conforms to the outer surface of the first face and shields the recess.
The sole structure according to claim 4, further comprising a carbon fiber sheet disposed on the second surface, wherein the cover layer is a large bottom layer.
The sole structure of claim 4 further comprising a large bottom layer disposed on the second side.
The sole structure of claim 1 wherein the low elastic layer is polyurethane.
The sole structure of claim 1 wherein the intermediate elastic layer is upright cotton.
The sole structure of claim 1 wherein the high elastic layer is a thermoplastic polyester elastomer.
A method for manufacturing a sole structure, comprising the steps of:

Providing a middle elastic layer, the middle elastic layer having a plurality of openings;

Infused with a low elastic layer, after the low elastic layer is cured:

Forming a body, including a first surface and a second surface;

Forming an outer side wall surrounding the body and forming a recess, wherein the middle elastic layer is disposed in the recess and attached to the first side;

Forming a plurality of holes corresponding to the openings in the body, and the holes penetrate the first face and the second face;

A high elastic layer is placed in each hole.
The method according to claim 10, wherein the step of forming the low elastic layer further comprises: forming a plurality of inner ring walls standing on the first surface and surrounding the holes, the inner ring walls being sandwiched therebetween Between the elastic layer and the high elastic layer.
The method of claim 10 wherein the low elastic layer penetrates the intermediate elastic layer from the contact of the low elastic layer with the intermediate elastic layer.
The method of claim 10, further comprising the step of: adhering a cover layer to the outer surface of the first face opposite the elastic layer, and the cover layer shields the recess.
The method of claim 13 further comprising the step of providing a carbon fiber sheet on the second side and the cover layer is a large bottom layer.
The method of claim 13 further comprising the step of: providing a large bottom layer on the second side.