Ventilation device applied to shoe sole and preparation method therefor, and shoe sole and shoe

Abstract

NOT VISIBLE DUE TO STATUS OF PATENT

Description

A breathable device for shoe soles and its manufacturing method, shoe soles and shoes Technical Field

[0001] This invention relates to the field of breathable shoe technology, and in particular to a breathable device for shoe soles, its preparation method, shoe soles, and shoes. Background Technology

[0002] Shoes consist of an upper and a sole, designed to protect the feet from sharp objects when walking. Traditional shoes improve breathability through the upper, but the sole is made of insulating material and lacks breathability. This makes it difficult for sweat to escape, leading to the growth of fungi and mold, resulting in athlete's foot and harming the wearer's foot health.

[0003] To enhance breathability, some shoes on the market have ventilation holes on the sides of the sole, allowing air to be drawn in or expelled through the sole, thus improving the airflow circulation efficiency between the shoe and the outside environment. For example, Chinese utility model patent CN219939844U discloses a breathable sole and a shoe including such a sole, comprising a sole body with an opening in the sole groove. The bottom wall of the groove has a supporting edge and a supporting beam, and the outer wall of the supporting edge is connected to the inner wall of the groove. The sole body also has several ventilation holes penetrating the supporting edge, and the insole is a breathable insole, which can provide a certain degree of waterproofing while ensuring good breathability. However, such shoes have poor waterproof and dustproof performance. After walking on dusty surfaces for a period of time, the small ventilation holes are easily clogged by accumulated dust, greatly reducing the breathability of the sole. Furthermore, water from the road surface can easily enter the sole through the ventilation holes, resulting in poor waterproofing and a poor wearing experience. Summary of the Invention

[0004] This invention provides a breathable device for shoe soles, a method for preparing the same, a shoe sole, and a shoe, to solve the problems of the above-mentioned shoes where the vents are easily blocked by dust, resulting in poor breathability, water easily entering the shoe through the vents and forming water accumulation, and poor waterproof effect.

[0005] The present invention adopts the following technical solution:

[0006] A breathable device for shoe soles includes a pad and a waterproof and breathable fabric covering the surface of the pad. The surface of the pad has multiple protrusions, and the protrusions have multiple ventilation holes. The periphery of the waterproof and breathable fabric has multiple round holes. A gasket is stacked on the periphery of the waterproof and breathable fabric, and the gasket is integrally formed with the pad through the round holes.

[0007] Furthermore, the aforementioned protrusions form interconnected grooves, which are used for secondary injection molding and bonding of the waterproof and breathable fabric. Further, the waterproof and breathable fabric is bonded to the gasket at the grooves, but not to the gasket at the protrusions. This arrangement allows the waterproof and breathable fabric to be well-fixed at the grooves, while providing better waterproof and breathable performance at the protrusions.

[0008] Furthermore, the bottom of the aforementioned groove is provided with multiple protrusions, which are used to abut against the aforementioned waterproof and breathable fabric.

[0009] Furthermore, the aforementioned gaskets and washers are injection molded from TPU (thermoplastic polyurethane) material in one piece.

[0010] Furthermore, the thickness of the aforementioned gasket is 1-3 mm.

[0011] A method for preparing a breathable device for use in shoe soles includes the following steps:

[0012] 1) Place the TPU raw material into the lower mold cavity of mold A, close the upper mold of mold A, heat and mold, cool and open the mold to obtain the inner ring component of the ventilation device semi-finished product. The above-mentioned protrusions form a groove structure between the protrusions, and all grooves are interconnected to form a mesh.

[0013] 2) Take a piece of waterproof and breathable fabric, punch holes in the waterproof and breathable fabric, and arrange the round holes of the waterproof fabric to fit the periphery of the inner ring component to form a circle.

[0014] 3) Place the inner ring component obtained in the previous step into the lower mold cavity of mold B, leaving a gap between the inner ring component and the side wall of the mold cavity. Hang a waterproof and breathable cloth on the upper mold of mold B, close the upper mold of mold B, and inject TPU material into the mold cavity of mold B. The inner ring component is bonded to the waterproof and breathable cloth with the newly injected TPU material to form an integral shape.

[0015] 4) Cool, open the mold, and cut off the excess waterproof and breathable fabric along the edge of the breathable device to obtain the breathable device.

[0016] Furthermore, the bottom surface of the upper mold of the aforementioned mold B is provided with an annular groove aligned with the periphery of the lower mold, and the newly injected TPU material can flow into the annular groove through the round holes of the aforementioned waterproof and breathable fabric.

[0017] Furthermore, the lower mold of mold A and the lower mold of mold B are provided with corresponding positioning pins in their mold cavities, and the inner ring component is provided with positioning holes that cooperate with the positioning pins.

[0018] A shoe sole includes a midsole, the upper surface of which has a groove, and the groove is provided with the aforementioned ventilation device applied to the shoe sole. The bottom of the groove has through holes corresponding to the aforementioned ventilation holes.

[0019] Furthermore, the bottom of the aforementioned midsole is bonded with an outsole.

[0020] A waterproof and breathable shoe includes an upper and a sole equipped with a breathable device, wherein the upper is attached to the upper end of the sole.

[0021] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

[0022] 1. This application uses mold A to manufacture a semi-finished inner ring component, and then places the inner ring component into the lower mold of mold B. TPU material is injected into mold B, and the TPU material flows into the groove of the inner ring component and the periphery of the lower mold cavity of mold B. At the same time, the TPU material flows through the round hole of the waterproof and breathable cloth into the annular groove of the upper mold of mold B, so that the inner ring component and the waterproof and breathable cloth are bonded to the secondary injected TPU material cloth and formed as one piece. The TPU material clamps the periphery of the waterproof and breathable cloth from the top and bottom, and the waterproof and breathable cloth is firmly connected to the inner ring component, and the periphery is not easy to delaminate.

[0023] 2. The inner ring component of this application has a protrusion in the groove. The protrusion is in contact with the waterproof and breathable fabric, so that the waterproof and breathable fabric remains flat and does not easily sink into the groove. The groove remains unobstructed, which facilitates the uniform injection of TPU material into the groove.

[0024] 3. The inner ring component of this application is provided with multiple protrusions, and each protrusion is provided with a puncture-resistant inclined plate. A vent is formed between the inclined plates. The vent is large in diameter and is not easily blocked by dust, so it has a good breathability. A waterproof and breathable fabric is covered on the surface of the protrusions. The waterproof and breathable fabric is not easily blocked by the vent, so the inner ring component has excellent waterproof and breathable effects.

[0025] 4. The breathable device of this application is installed on the sole of the shoe. The sole has a groove adapted to the breathable device. The bottom of the groove has multiple breathable holes with large diameters, which optimizes the breathability of the sole and provides good waterproof and breathable performance.

[0026] 5. The protrusion of this application is provided with parallel inclined plates, and the inclined plates form strip-shaped ventilation holes. The inclined plates have anti-puncture function, protecting the soles of the feet from being punctured by sharp objects on the bottom, making the shoes safer to wear and walk in. The structural design is reasonable. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the structure of mold A and lower mold of this application.

[0028] Figure 2 is a schematic diagram of the structure of mold B in this application.

[0029] Figure 3 is a schematic diagram of the structure of the lower mold B of this application.

[0030] Figure 4 is a structural schematic diagram of the waterproof and breathable fabric of this application.

[0031] Figure 5 is a structural schematic diagram of the inner ring component of this application.

[0032] Figure 6 is a schematic diagram of the structure of the gasket of this application.

[0033] Figure 7 is a schematic diagram of the structure of the gasket and waterproof and breathable fabric of this application.

[0034] Figure 8 is a structural schematic diagram of the midsole of this application without the installation of a breathable device.

[0035] Figure 9 is a schematic diagram of the structure of the midsole with a breathable device installed in this application.

[0036] Figure 10 is a cross-sectional view of the midsole with a breathable device installed according to this application.

[0037] Figure 11 is a structural schematic diagram of the sole of the shoe in this application, viewed from below. Detailed Implementation

[0038] Referring to Figures 1 to 7, a breathable device for shoe soles includes a pad 1 and a waterproof and breathable fabric 3 covering the surface of the pad 1. The surface of the pad 1 is provided with a plurality of protrusions 12, and the protrusions 12 are provided with a plurality of breathable holes 120. The periphery of the waterproof and breathable fabric 3 is provided with a plurality of round holes 30. A washer 111 is stacked on the periphery of the waterproof and breathable fabric 3. The washer 111 is integrally formed with the pad 1 through the round holes 30.

[0039] Referring to Figures 5 and 6, the above-mentioned multiple protrusions 12 form interconnected grooves 122, which are used for secondary injection molding and bonding of the above-mentioned waterproof and breathable fabric 3.

[0040] Referring to Figure 5, the bottom of the groove 122 is provided with a plurality of protrusions 13, which are used to abut against the waterproof and breathable fabric 3.

[0041] The aforementioned gasket 1 and washer 111 are integrally injection molded from TPU material, with washer 111 and gasket 1 clamping the edges of the waterproof and breathable fabric 3 from the top and bottom.

[0042] The thickness of the gasket 1 is 1-3mm, preferably 2mm.

[0043] A method for preparing a breathable device for use in shoe soles includes the following steps:

[0044] 1) Place the TPU raw material into the lower mold cavity A-2 of mold A, close the upper mold A-2 of mold A, heat and mold, cool and open the mold to obtain the inner ring component 11 of the ventilation device semi-finished product. The above-mentioned protrusions 12 form a groove 122 structure between the protrusions 12, and all grooves 122 are interconnected to form a mesh.

[0045] 2) Take a piece of waterproof and breathable fabric 3, punch holes in the waterproof and breathable fabric 3, and arrange the round holes 30 of the waterproof fabric to fit the periphery of the inner ring component 11 to form a ring.

[0046] 3) Place the inner ring component 11 obtained in the previous step into the lower mold B-2 cavity of mold B. Leave a gap between the inner ring component 11 and the side wall of the mold cavity. Hang the waterproof and breathable cloth 3 on the upper mold B-1 of mold B. Close the upper mold B-1 of mold B. The upper mold B-1 is provided with a feed hole b4 that connects to the injection molding equipment. The waterproof and breathable cloth 3 is provided with holes 31 that are aligned with the feed hole b4. Inject TPU material into the mold cavity b2 of mold B. The TPU material flows into the mold cavity b2 of mold B through the feed hole b4 and along the guide hole b1. The inner ring component 11 is bonded to the waterproof and breathable cloth 3 with the newly injected TPU material to form an integral shape.

[0047] 4) Cool, open the mold, and cut off the excess waterproof and breathable fabric 3 along the edge of the breathable device to obtain the breathable device.

[0048] The bottom surface of the upper mold of the above-mentioned mold B is provided with an annular groove b3 aligned with the periphery of the lower mold. Newly injected TPU material can flow into the annular groove b3 through the round hole 30 of the above-mentioned waterproof and breathable fabric 3.

[0049] The lower mold of mold A and the lower mold of mold B are provided with corresponding positioning pins 4 in their respective mold cavities, and the inner ring component 11 is provided with positioning holes 100 that cooperate with the positioning pins 4.

[0050] Referring to Figures 8 to 11, a shoe sole includes a midsole 2. A groove 20 is provided on the upper surface of the midsole. The groove 20 is provided with the aforementioned ventilation device applied to the shoe sole. A through hole 201 corresponding to the ventilation hole 120 is provided through the bottom of the groove 20. The midsole 2 is connected to the outside through the ventilation hole 201.

[0051] The bottom of the aforementioned midsole is bonded with an outsole 21, and the bottom surface of the outsole 21 is provided with an anti-slip pattern.

[0052] A waterproof and breathable shoe includes an upper and a sole equipped with a breathable device, wherein the upper is attached to the upper end of the sole 2.

[0053] The waterproof and breathable fabric used in this application is known to those skilled in the art. It is a textile fabric composed of a polymer waterproof and breathable material (such as a PTFE membrane, i.e., polytetrafluoroethylene membrane) and a fabric. For example, fabrics of the GORE-TEX brand sold by W. Gore & Associates, Inc. can be used.

[0054] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A breathable device applied to the sole of a shoe, characterized in that: The device includes a gasket and a waterproof and breathable fabric covering the surface of the gasket. The surface of the gasket has multiple protrusions, and each protrusion has multiple vent holes. The periphery of the waterproof and breathable fabric has multiple round holes, and a gasket is stacked on the periphery of the waterproof and breathable fabric. The gasket is integrally formed with the gasket through the round holes.

2. The breathable device applied to the sole of a shoe as described in claim 1, characterized in that: The plurality of protrusions form interconnected grooves, which are used for secondary injection molding and bonding of the waterproof and breathable fabric.

3. A breathable device for use in shoe soles as described in claim 2, characterized in that: The bottom of the groove is provided with multiple protrusions, which are used to support the waterproof and breathable fabric.

4. A breathable device for use in shoe soles as described in claim 1, characterized in that: The gasket and washer are injection molded from TPU material in one piece.

5. A breathable device for use in shoe soles as described in claim 1, characterized in that: The protrusion is provided with multiple inclined plates, and the vent holes are formed between the inclined plates.

6. A breathable device for use in shoe soles as described in claim 1, characterized in that: The thickness of the gasket is 1-3 mm.

7. The method for preparing a breathable device for shoe soles as described in claim 1, characterized in that, Includes the following steps: 1) Place the TPU raw material into the lower mold cavity of mold A, close the upper mold of mold A, heat and form, cool and open the mold to obtain the inner ring component of the breathable device semi-finished product. The convex parts are grooved to each other, and all the grooves are interconnected to form a mesh. 2) Take a piece of waterproof and breathable fabric, punch holes in the waterproof and breathable fabric, and arrange the round holes of the waterproof fabric to fit the periphery of the inner ring component to form a circle. 3) Place the inner ring component obtained in the previous step into the lower mold cavity of mold B, leaving a gap between the inner ring component and the side wall of the mold cavity. Hang a waterproof and breathable cloth on the upper mold of mold B, close the upper mold of mold B, and inject TPU material into the mold cavity of mold B. The inner ring component is bonded to the waterproof and breathable cloth with the newly injected TPU material to form an integral shape. 4) Cool, open the mold, and cut off the excess waterproof and breathable fabric along the edge of the breathable device to obtain the breathable device.

8. The method for preparing a breathable device for use in shoe soles as described in claim 7, characterized in that: The bottom surface of the upper mold of mold B is provided with an annular groove aligned with the periphery of the lower mold. Newly injected TPU material can flow into the annular groove through the round holes of the waterproof and breathable fabric.

9. The method for preparing a breathable device for use in shoe soles as described in claim 7, characterized in that: The lower mold of mold A and the lower mold of mold B are provided with corresponding positioning pins in their mold cavities, and the inner ring component is provided with positioning holes that cooperate with the positioning pins.

10. A shoe sole, comprising a midsole, characterized in that: The upper surface of the midsole is provided with a groove, and a breathable device for the sole as described in any one of claims 1-9 is provided in the groove. The bottom of the groove is provided with through holes that correspond one-to-one with the breathable holes.

11. A shoe sole as described in claim 10, characterized in that: The bottom of the midsole is bonded to the outsole.

12. A waterproof and breathable shoe, characterized in that: It includes an upper and a sole with a breathable device as described in claim 10, wherein the upper is attached to the upper end of the sole.