Eco-friendly shoe sole and manufacturing method therefor

Abstract

The present invention relates to an eco-friendly shoe sole comprising: a sole body to be sewn onto an upper; a plurality of guide grooves recessed at intervals in the sole body and for guiding a threaded needle; and a plurality of first identification parts formed on the outer surface of the sole body such that the positions of the plurality of guide grooves are identified.

Description

Eco-friendly shoe sole and method of manufacturing the same

[0001] The present invention relates to an eco-friendly shoe sole and a method for manufacturing the same.

[0002] Shoes are clothing worn on the feet. Such shoes may include a sole on which the sole of the foot rests, and an upper that is attached to the upper side of the sole and wraps around the foot.

[0003] However, conventional shoes had the problem that the working environment was poor and environmental problems arose due to the adhesive used in the bonding process between the sole and the upper.

[0004] The present invention was devised to solve the aforementioned problems, and the objective of the present invention is to provide an eco-friendly shoe sole and a method for manufacturing the same, which can improve the working environment and prevent environmental problems by being bonded to the upper without adhesive.

[0005] In addition, another objective of the present invention is to provide an eco-friendly shoe sole and a method for manufacturing the same, wherein a plurality of guide grooves are formed to guide the sewing thread, thereby allowing the sewing thread to be easily sewn.

[0006] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below.

[0007] An eco-friendly shoe sole according to one embodiment of the present invention comprises: a sole body for sewing together with an upper; a plurality of guide grooves formed by recessing at intervals in the sole body and for guiding a sewing thread to a needle; and a plurality of first identification parts each formed on the outer surface of the sole body so as to identify the positions of the plurality of guide grooves.

[0008] In addition, the first identification part may be formed on the upper or lower side of the guide groove.

[0009] In addition, the first identification part may have a line shape.

[0010] In addition, the first identification part may be formed protruding from the outer surface of the sole body.

[0011] Additionally, it further includes a guideline formed by being recessed along the outer perimeter of the sole body, and a plurality of guide grooves may be formed by being recessed at intervals along the guideline.

[0012] Additionally, it may further include a second identification part formed on the upper or lower side of the guide groove located at the rear of the sole body on the outer surface of the sole body.

[0013] In addition, the second identification part may have a circular shape.

[0014] A method for manufacturing an eco-friendly shoe sole according to one embodiment of the present invention comprises the steps of: forming a sole body; forming a plurality of guide grooves formed by recessing at intervals in the sole body; and forming a plurality of first identification parts on the outer surface of the sole body.

[0015] In addition, the method may further include the step of forming a guideline that is recessed along the outer perimeter of the sole body.

[0016] Additionally, the method may further include the step of forming a second identification part on the upper or lower side of the guide groove located at the rear of the sole body on the outer surface of the sole body.

[0017] Other specific details of the present invention are included in the detailed description and drawings.

[0018] An eco-friendly shoe sole and a method for manufacturing the same according to one embodiment of the present invention are combined with an upper without adhesive, thereby improving the working environment and preventing environmental problems.

[0019] In addition, while adhesives used in conventional shoe assembly processes have a negative impact on the health of workers and the surrounding environment, the present invention has the advantage of providing shoes with sufficient durability through sewing alone, without the need for adhesives.

[0020] In addition, while conventional methods require energy consumption due to the need for heat and pressure when adhesives are used in the shoe assembly process, the present invention has the advantage of enabling shoe assembly without the need for heat and pressure as it does not use adhesives.

[0021] In addition, since the present invention does not use adhesive in the shoe assembly process, restrictions on the location for shoe assembly are alleviated, and there is an advantage that assembly can be performed anywhere where hand sewing is possible, such as at home or in the office.

[0022] In addition, while conventional methods make it difficult to separate and dispose of waste generated from the use of adhesives in the shoe assembly process and result in a large volume of waste, this invention has the advantage of being eco-friendly because it facilitates easy separation and reduces waste volume by removing only the sewing threads used in shoe sewing.

[0023] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below.

[0024] FIG. 1 is a perspective view showing an eco-friendly shoe sole according to one embodiment of the present invention.

[0025] FIG. 2 is a side view showing an eco-friendly shoe sole according to one embodiment of the present invention.

[0026] FIG. 3 is a rear view showing an eco-friendly shoe sole according to one embodiment of the present invention.

[0027] FIG. 4 is a rear view showing a state in which a sewing thread is inserted into a guide groove of an eco-friendly shoe sole according to one embodiment of the present invention.

[0028] FIGS. 5 to 10 are schematic diagrams illustrating the process of sewing together an eco-friendly shoe sole and an upper according to one embodiment of the present invention.

[0029] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the present invention, and the present invention is defined only by the scope of the claims.

[0030] The terms used in this specification are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. The terms "comprises" and / or "comprising" used in this specification do not exclude the presence or addition of one or more other components in addition to the components mentioned. Throughout the specification, the same reference numerals refer to the same components, and "and / or" includes each of the mentioned components and all combinations of one or more. Although terms such as "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical scope of the invention.

[0031] Unless otherwise defined, all terms used herein (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0032] Spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used to facilitate the description of the relationship between one component and other components as illustrated in the drawings. Spatially relative terms should be understood as encompassing different orientations of components during use or operation, in addition to the orientations depicted in the drawings. For example, if a component depicted in a drawing is inverted, a component described as "below" or "beneath" of another component may be placed "above" of that component. Therefore, the exemplary term "below" may encompass both the lower and upper directions. Components may also be oriented in other directions, and accordingly, spatially relative terms may be interpreted according to the orientation.

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0034] FIG. 1 is a perspective view showing an eco-friendly shoe sole according to one embodiment of the present invention, FIG. 2 is a side view showing an eco-friendly shoe sole according to one embodiment of the present invention, FIG. 3 is a rear view showing an eco-friendly shoe sole according to one embodiment of the present invention, and FIG. 4 is a rear view showing a state in which a sewing thread is inserted into a guide groove (11) of an eco-friendly shoe sole according to one embodiment of the present invention.

[0035] As illustrated in FIGS. 1 to 4, an eco-friendly shoe sole according to one embodiment of the present invention may include a sole body (10), a plurality of guide grooves (11), and a plurality of first identification parts (13).

[0036] The sole body (10) is intended to be sewn together with the upper (20) and can serve to accommodate the foot. The upper surface of the sole body (10) may be open, and the foot may be accommodated through the upper surface thus opened.

[0037] For example, the sole body (10) can be manufactured by injection molding.

[0038] As another example, the sole body (10) may have a rear radius smaller than the front radius. Thus, a foot can be inserted into the interior of the sole body (10).

[0039] As another example, a non-slip pattern for non-slip with the ground can be formed on the lower surface of the sole body (10).

[0040] A plurality of guide grooves (11) are formed in the sole body (10) at spaced intervals and can serve to guide the needle (2) sewn by the sewing thread (1). Through these plurality of guide grooves (11), the needle (2) sewn by the sewing thread (1) alternately passes through the outer and inner sides of the sole body (10), and the sole body (10) and the upper (20) can be sewn together.

[0041] For example, the guide groove (11) may have a cylindrical shape. Here, the diameter of the guide groove (11) may be 0.7 mm to 1.3 mm. Also, the depth of the guide groove (11) may be 0.3 mm to 0.7 mm.

[0042] In other cases, multiple guide grooves (11) may be formed by being recessed at intervals in the guideline (12) formed in the sole body (10).

[0043] The guideline (12) may be formed as a recess along the outer circumference of the sole body (10). This guideline (12) may serve to guide the sewing thread (1) and the needle (2) sewn into the guide groove (11).

[0044] A plurality of first identification parts (13) may each be formed on the outer surface of the sole body (10) so that the location of a plurality of guide grooves (11) can be identified. Through this, the plurality of first identification parts can allow the user (worker) to visually and easily identify the location of a plurality of guide grooves (11), and through this, the user can easily insert a needle (2) with a sewing thread (1) sewn into a plurality of guide grooves (11).

[0045] For example, the first identification part (13) may be formed on the upper or lower side of the guide groove (11). Referring to the drawing, the first identification part (13) may be formed on the upper side of the guide groove (11).

[0046] As another example, the first identification part (13) may have a line shape.

[0047] As another example, the first identification part (13) may have a curved shape along the curved surface of the sole body (10). Here, the length of the guideline (12) may be 0.5 mm to 1.1 mm.

[0048] For example, the first identification part (13) may be formed protruding from the outer surface of the sole body (10) to further improve identification.

[0049] An eco-friendly shoe sole according to one embodiment of the present invention may further include a second identification part (14).

[0050] The second identification part (14) may be formed on the upper or lower side of the guide groove (11) located at the rear of the sole body (10) on the outer surface of the sole body (10). As such, the guide groove (11) located at the rear of the sole body (10) on the outer surface of the sole body (10) is where the needle (2) with the sewing thread (1) sewn is first inserted, and thus its identification needs to be improved through the second identification part (14).

[0051] For example, the first identification part (13) may be formed on the upper side of the guide groove (11) located at the rear of the sole body (10) on the outer surface of the sole body (10), and the second identification part (14) may be formed on the lower side of the guide groove (11) located at the rear of the sole body (10) on the outer surface of the sole body (10).

[0052] As another example, the second identification part (14) may have a circular shape. Through this, the identifiability of the second identification part (14) can be further improved.

[0053] For example, the spacing between multiple guide grooves (11) can be calculated using mathematical formula 1.

[0054] [Mathematical Formula 1]

[0055] Spacing (mm) between multiple guide grooves (11) = a * shoe size (mm) + b

[0056] However, a is the rate of change in spacing between multiple guide grooves (11) according to shoe size (constant), and b is the basic hole spacing (constant)

[0057] Referring to mathematical formula 1, the spacing between the multiple guide grooves (11) can be set so that as the shoe size increases, the hole spacing also increases at a constant rate. The applicant experimentally and empirically calculated the optimal values ​​for a and b through experiments or data analysis. For example, if the value of a is 0.1 and the value of b is 5, the hole spacing for a 250mm size shoe can be 30mm.

[0058] As another example, the spacing between multiple guide grooves (11) can be calculated using Equation 2.

[0059] [Mathematical Formula 2]

[0060] Hole spacing (mm) = c * R + d

[0061] However, c is the rate of change in spacing between multiple guide grooves (11) according to the radius of curvature (constant), d is the basic hole spacing (constant), and R is the radius of curvature of the front or rear of the sole body (10) (mm).

[0062] Referring to mathematical formula 2, the spacing between the multiple guide grooves (11) can be set so that as the radius of curvature of the front or rear of the sole body (10) increases, the spacing between the holes also increases at a constant rate. The applicant experimentally and empirically calculated the optimal values ​​for c and d through experiments or data analysis.

[0063] The following describes the process of sewing together an eco-friendly shoe sole and an upper according to one embodiment of the present invention.

[0064] FIGS. 5 to 10 are schematic diagrams illustrating the process of sewing together an eco-friendly shoe sole and an upper according to one embodiment of the present invention.

[0065] First, a needle (2) with sewing thread is passed through a guide groove (11) located at the rear of the sole body (10). At this time, the identifiability of the guide groove (11) located at the rear of the sole body (10) can be improved through the first identification part (13) and the second identification part (14). (See FIG. 5)

[0066] Next, a needle (2) sewn with thread is passed through the upper (20). (See FIG. 6)

[0067] Subsequently, a needle (2) with sewing thread is inserted through a guide groove (11) located at the rear of the sole body (10), another guide groove (11) adjacent to it, and the upper (20). At this time, the identifiability of the other guide groove (11) can be improved through another first identification part (13). (See FIGS. 7 and 8)

[0068] Subsequently, the needle (2), through which the sewing thread (1) is sewn, alternately passes the outer and inner sides of the sole body (10) through the plurality of guide grooves (11), and the sole body (10) and the upper (20) can be sewn together. (See FIG. 9)

[0069] Finally, if necessary, a rear heel (21) may be sewn onto the rear of the upper (20). (See FIG. 10)

[0070] Hereinafter, a method for manufacturing an eco-friendly shoe sole according to one embodiment of the present invention will be described.

[0071] A method for manufacturing an eco-friendly shoe sole according to one embodiment of the present invention may include the steps of forming a sole body (10), forming a plurality of guide grooves (11) formed by recessing at intervals in the sole body (10), and forming a plurality of first identification parts (13) on the outer surface of the sole body (10). Here, the step of forming the sole body (10) may be manufactured by injection molding using a mold having a cavity formed in a shape corresponding to the sole body (10).

[0072] Additionally, the method may further include the step of forming a guideline (12) that is recessed along the outer circumference of the sole body (10).

[0073] Additionally, the method may further include the step of forming a second identification part (14) on the upper or lower side of a guide groove (11) located at the rear of the sole body (10) on the outer surface of the sole body (10).

[0074] According to the present invention, the eco-friendly shoe sole and the method of manufacturing the same according to one embodiment of the present invention are combined with the upper without adhesive, thereby improving the working environment and preventing environmental problems.

[0075] In addition, while adhesives used in conventional shoe assembly processes have a negative impact on the health of workers and the surrounding environment, the present invention has the advantage of providing shoes with sufficient durability through sewing alone, without the need for adhesives.

[0076] In addition, while conventional methods require energy consumption due to the need for heat and pressure when adhesives are used in the shoe assembly process, the present invention has the advantage of enabling shoe assembly without the need for heat and pressure as it does not use adhesives.

[0077] In addition, since the present invention does not use adhesive in the shoe assembly process, restrictions on the location for shoe assembly are alleviated, and there is an advantage that assembly can be performed anywhere where hand sewing is possible, such as at home or in the office.

[0078] In addition, while conventional methods make it difficult to separate and dispose of waste generated from the use of adhesives in the shoe assembly process and result in a large volume of waste, this invention has the advantage of being eco-friendly because it facilitates easy separation and reduces waste volume by removing only the sewing threads used in shoe sewing.

[0079] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. A sole body for being sewn together with an upper; A plurality of guide grooves formed by spaced indentations in the sole body and for a seamstress to guide a needle; and An eco-friendly shoe sole comprising a plurality of first identification parts each formed on the outer surface of the sole body so as to identify the positions of the plurality of guide grooves.

2. In Paragraph 1, The above-mentioned first identification part is an eco-friendly shoe sole formed on the upper or lower side of the above-mentioned guide groove.

3. In Paragraph 1, The above-mentioned first identification part is an eco-friendly shoe sole having a line shape.

4. In Paragraph 1, The above-mentioned first identification part is an eco-friendly shoe sole formed protruding from the outer surface of the above-mentioned sole body.

5. In Paragraph 1, It further includes a guideline formed by a depression along the outer perimeter of the sole body, and An eco-friendly shoe sole in which multiple guide grooves are formed by being recessed at intervals along the above guidelines.

6. In Paragraph 1, An eco-friendly shoe sole further comprising a second identification part formed on the upper or lower side of the guide groove located at the rear of the sole body on the outer surface of the sole body.

7. In Paragraph 6, The above second identification part is an eco-friendly shoe sole having a circular shape.

8. Step of forming the sole body; A step of forming a plurality of guide grooves formed by recessing spaced apart in the sole body; and A method for manufacturing an eco-friendly shoe sole, comprising the step of forming a plurality of first identification parts on the outer surface of the sole body.

9. In Paragraph 8, A method for manufacturing an eco-friendly shoe sole, further comprising the step of forming a guideline that is recessed along the outer perimeter of the sole body.

10. In Paragraph 8, A method for manufacturing an eco-friendly shoe sole, further comprising the step of forming a second identification part on the upper or lower side of the guide groove located at the rear of the sole body on the outer surface of the sole body.

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