Wedge strip with bridging surface and shoe

Abstract

The welt comprises a welt body, the bridging face is integrally formed on the back face of the welt body, the bridging face comprises a front face structure layer and a back face structure layer, the front face structure layer is an easy-to-adhere material layer, the back face structure layer is a cloth layer with a micropore permeable structure, and the bridging face is arranged on the back face of the welt body. One side of the back surface structure layer and the back surface of the welt body are integrally formed, the back surface of the welt body in a molten state infiltrates and permeates into micropore gaps of the back surface structure layer of the bridging surface and is solidified, the bridging surface is firmly fixed on the back surface of the welt body, and the other side of the back surface structure layer is compounded with the front surface structure layer. The structure and the process of the welt are designed, the welt is variable in style and color, the welt of the sole is not prone to glue failure, the welt is particularly suitable for high-side-wall soles and thick-sole shoes, the product quality is improved, the wearing comfort of the shoes is improved, the welt optimized through light materials is light in weight, raw materials are saved, and the production cost is reduced. And the wearing comfort of the shoes is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shoes, in particular to a welt with a bridging surface and a shoe. Background Art

[0002] Shoes are an indispensable object in people's daily life and play an important role in people's lives. Vulcanized shoes: with rubber, fabric or leather as the upper, rubber as the base material, processed by gluing, molding or injection, and then vulcanized under a certain temperature and pressure, giving the upper and sole high strength and high elasticity, and making the two firmly combined.

[0003] The bottom wall is the side part of the connection between the sole and the upper, which plays the role of reinforcement and beautification. The welt is a long strip of material, which is not a whole with the sole. It needs to be glued to form a circle and assembled to the outer surface of the bottom wall. Therefore, during the customer's use and wearing process, the glue is very easy to come off at this position between the welt corresponding to the bending part of the sole and the finished shoe, resulting in unstable product quality and complicated after-sales problems, which seriously shortens the service life of the shoes. In addition, many welt materials themselves are not sticky to glue and the gluing effect is not good, resulting in the phenomenon of debonding no matter how the craftsmanship is done. In addition, the weight of the welt itself is too heavy, which makes the overall weight of the finished shoe too heavy, affecting the comfort of wearing the shoes. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned background technology, the utility model provides an welt and shoes with a bridging surface, the structure and process of the welt are designed, the welt styles and colors are changeable, the welt is not easy to debond, and it is especially suitable for soles with high side walls and thick-soled shoes, so as to improve product quality and increase the wearing comfort of shoes. The welt optimized with lightweight materials is light in weight, saves raw materials, and further improves the wearing comfort of shoes.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an welt with a bridging surface, wherein the welt is assembled with a shoe sole, the welt comprises a welt body, the back of the welt body is integrally formed with a bridging surface, the bridging surface comprises a front structural layer and a back structural layer, the front structural layer is an easily adhesive material layer, the back structural layer is a fabric layer with a microporous permeable structure, one side of the back structural layer is integrally formed with the back of the welt body, the back of the welt body in a molten state is infiltrated and penetrated into the microporous gaps of the back structural layer of the bridging surface and is solidified, the bridging surface is firmly fixed to the back of the welt body, and the other side of the back structural layer is compounded with the front structural layer.

[0007] Furthermore, the cloth layer is linen, knitted base cloth or thick material with capillary gaps.

[0008] During the process of integrally molding the back side of the welt body and the back side structural layer of the bridge surface, the welt body material (polyvinyl chloride, silicone, rubber, polyurethane, ethylene-vinyl acetate copolymer, etc.) in a liquid state infiltrates and penetrates into the microporous gaps of the fabric layer, and in the subsequent vulcanization or curing process, the welt body and the back side structural layer of the bridge surface are tightly connected and cannot fall off.

[0009] Furthermore, the easy-adhesive material layer is polyurethane, thermoplastic polyurethane elastomer, polyvinyl chloride, rubber, ethylene-vinyl acetate copolymer, thermoplastic rubber, genuine leather, woven fabric, artificial leather or microfiber synthetic leather.

[0010] By gluing the easy-to-adhesive material on the front of the bridge surface to the sole base, on the one hand, the combined strength of the welt and the sole base can be increased, thereby reducing the probability of debonding of the welt; on the other hand, the material of the welt body is not restricted, and materials with changeable colors such as silicone, polyvinyl chloride, etc. can be used, resulting in a variety of product styles and colors.

[0011] Furthermore, a deep groove structure extending upward from the bottom is formed on the edge strip at a position opposite to the sole bend of the shoe base, and the width of the edge strip at a position opposite to the sole bend of the shoe base is smaller than the width of other positions on the edge strip.

[0012] The welt is grooved at the bend of the sole of the shoe to form a deep groove structure, and an upward protrusion structure is formed in the installation groove of the bottom wall. The groove structure of the welt is adapted to the protrusion structure on the bottom wall for installation, and the cross-sectional area of ​​the welt at the bend of the sole of the foot is greatly reduced, thereby forming an area that is narrower than the width of the entire welt, reducing the cross-sectional area of ​​the bending width of the welt, reducing the stress on the welt at the bend, facilitating the bending of the shoe, and reducing the probability of degumming of the welt. This is especially suitable for soles with high bottom walls and thick soles, and the degumming rate of the welt is further greatly reduced.

[0013] Preferably, the depth of the groove structure of the welt is less than or equal to 1 / 4 of the width of the welt at that location, further reducing the stress on the welt at the bend, facilitating the bending of the shoe, and greatly reducing the probability of the welt coming unglued. In some specific embodiments, the deep groove structure of the welt can be a truncated structure that runs through the top and bottom, that is, the welt is truncated.

[0014] Furthermore, a lightweight material layer is composited between the front structural layer and the back structural layer of the bridging surface.

[0015] The soles of many shoes are too heavy. The reason for this is that the welt is too heavy. To address this problem, we have optimized the welt structure. Specifically, a layer of lightweight material is compounded between the front structural layer and the back structural layer of the bridging surface. The lightweight material may be ethylene-vinyl acetate copolymer or other materials that are lighter than the welt body material. The lightweight material can fill the volume proportion of the original welt body material to reduce the overall weight of the finished welt.

[0016] Furthermore, the welt is provided with a positioning line which cooperates with the alignment line on the shoe base to fix the welt on the shoe base at a predetermined position.

[0017] Preferably, the alignment line is located at the toe position on the base. Since the length of the welt is long, and the width of the welt at the toe position is usually small, and the bending arc is large, the installation position of the welt at the toe position is difficult to locate. Therefore, a positioning line is set at the toe position of the welt, and an alignment line is correspondingly set at the toe position on the base. Through the cooperation of the positioning line on the welt and the alignment line on the base, the welt can be accurately fixed on the base according to the predetermined position. In a specific embodiment, the positioning line is a linear groove, and the alignment line is a linear protrusion.

[0018] Furthermore, the softness of the welt is greater than that of the shoe base, and the welt and the shoe base are made of silicone, polyvinyl chloride, polyurethane, ethylene-vinyl acetate, rubber, thermoplastic rubber, artificial leather, genuine leather, woven fabric or microfiber synthetic leather.

[0019] The axial direction of the welt body and the non-stretching direction of the bridge surface are consistent, so that the welt with the bridge surface is not easy to stretch axially. The welt is softer than the shoe base, and it is not easy to generate longitudinal shear force to cause the debonding of the welt and the base.

[0020] The utility model also provides a pair of shoes, comprising the above-mentioned edge strip, base, bottom wall and upper, the bottom wall is arranged around the outer side surface of the base, an assembly space for assembling the upper is formed between the top of the base and the inner side surface of the bottom wall, an installation groove adapted to be installed with the edge strip is formed on the outer side surface of the bottom wall, and the edge strip is adapted to be installed in the installation groove.

[0021] Furthermore, an upward convex structure is formed in the installation groove of the bottom wall at a position directly opposite to the sole bend of the base, a deep groove structure extending upward from the bottom is formed on the edge strip at a position directly opposite to the sole bend of the shoe base, the convex structure on the bottom wall is adapted to be installed with the deep groove structure on the edge strip, and an upward deep groove is formed on the side of the convex structure facing the base. A deep groove is formed at the bottom of the convex structure of the bottom wall, which further facilitates the bending of the shoe and reduces the stress on the edge strip at the bend.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The material of the welt on existing vulcanized shoes is very limited. It can only be rubber, with a single color and a simple structure. This is because other materials with diverse shapes and colors cannot be combined with the shoe base through vulcanization. For example, the performance of polyvinyl chloride or silicone materials is too stable to be bonded to the shoe base through glue. The degumming rate of products that are forcibly bonded with these two materials remains high. In the utility model, the structure and process of the welt are designed, and an welt with a bridging surface is adopted. During the integral molding process of the back structure of the bridging surface and the back of the welt body, the welt body material (polyvinyl chloride, silicone, rubber, polyurethane, ethylene-vinyl acetate copolymer, etc.) in a liquid state infiltrates and penetrates into the microporous gaps of the fabric layer of the bridging surface, and in the subsequent vulcanization or curing process, the welt body and the back structure layer of the bridging surface are tightly connected and cannot fall off, and then the easy-to-adhesive material on the front of the bridging surface and the sole base are glued. On the one hand, the combined strength of the welt and the sole base can be increased, thereby reducing the probability of debonding of the welt, which is particularly suitable for soles with high side walls and thick soles. On the other hand, the material of the welt body is not restricted, and materials with variable colors such as silicone and polyvinyl chloride can be used, so that the product styles are varied in color and rich in variety.

[0024] The soles of many shoes are too heavy. The reason for this is that the welt is too heavy. To address this problem, we have optimized the welt structure. Specifically, a layer of lightweight material is compounded between the front structural layer and the back structural layer of the bridging surface. The lightweight material may be ethylene-vinyl acetate copolymer or other material that is lighter than the welt body material. The lightweight material can fill the volume proportion of the original welt body material to reduce the overall weight of the finished welt. The welt optimized with lightweight materials is lightweight, saves raw materials, and further improves the wearing comfort of the shoes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a front structural schematic diagram of the edge strip in the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the edge strip in the utility model;

[0028] Figure 3 This is a schematic diagram of the overall structure of the shoe in the utility model;

[0029] Among them, the specific drawings are marked as:

[0030] Welt 1, deep groove structure 2, positioning line 3, welt body 4, bridging surface 5, front structure layer 6, lightweight material layer 7, back structure layer 8, base 9, bottom wall 10, raised structure 11, deep groove 12, and upper 13. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example 1

[0033] This embodiment provides a welt with a bridging surface. The welt 1 is assembled with the shoe base 9. Figure 1 and Figure 2 As shown, the welt 1 includes a welt body 4, and a bridging surface 5 is integrally formed on the back of the welt body 4. The bridging surface 5 includes a front structural layer 6 and a back structural layer 8. The front structural layer 6 is an easily adhesive material layer, and the back structural layer 8 is a fabric layer with a microporous permeable structure. One side of the back structural layer 8 is integrally formed with the back of the welt body 4. The back of the welt body 4 in a molten state infiltrates and penetrates into the microporous gaps of the back structural layer 8 of the bridging surface 5 and solidifies, so that the bridging surface 5 is firmly fixed to the back of the welt body 4, and the other side of the back structural layer 8 is compounded with the front structural layer 6.

[0034] The fabric layer is linen, knitted base fabric or thick material with capillary gaps. During the process of integrally molding the back side of the welt body 4 and the back side structural layer 8 of the bridge surface 5, the liquid welt body 4 material (polyvinyl chloride, silicone, rubber, polyurethane, ethylene-vinyl acetate copolymer, etc.) infiltrates and penetrates into the microporous gaps of the fabric layer, and in the subsequent vulcanization or curing process, the welt body 4 and the back side structural layer 8 of the bridge surface 5 are tightly connected and cannot fall off.

[0035] The easy-to-adhesive material layer is polyurethane, thermoplastic polyurethane elastomer, polyvinyl chloride, rubber, ethylene-vinyl acetate copolymer, thermoplastic rubber, genuine leather, woven fabric, artificial leather or microfiber synthetic leather. By gluing the easy-to-adhesive material on the front of the bridge surface 5 to the sole base 9, on the one hand, the combined strength of the welt 1 and the sole base 9 can be increased, thereby reducing the probability of debonding of the welt 1. On the other hand, the material of the welt body 4 is not limited, and materials with variable process colors such as silicone and polyvinyl chloride can be used, so that the product style is varied in color and rich in variety.

[0036] Among them, a deep groove structure 2 extending upward from the bottom is formed on the edge strip 1 at a position directly opposite to the bend of the sole of the shoe base 9, and the width of the edge strip 1 at the position directly opposite to the bend of the sole of the shoe base 9 is smaller than the width of other positions on the edge strip 1. The edge strip 1 is grooved at the bend of the sole of the shoe to form a deep groove structure 2, and an upward protruding structure 11 is formed in the installation groove of the bottom wall 10. The deep groove structure 2 of the edge strip 1 is adapted to be installed with the protruding structure 11 on the bottom wall 10, and the cross-sectional area of ​​the edge strip 1 at the bend of the sole is greatly reduced, thereby forming an area narrower than the width of the entire edge strip 1, reducing the bending width cross-sectional area of ​​the edge strip 1, reducing the stress of the edge strip 1 at the bend, facilitating the bending of the shoe, and reducing the probability of degumming of the edge strip 1, which is particularly suitable for the soles of high bottom walls 10 and thick-soled shoes, so that the degumming rate of the edge strip 1 is further greatly reduced. Preferably, the depth of the deep groove structure 2 of the welt 1 is less than or equal to 1 / 4 of the width of the welt 1 at that location, further reducing the stress on the welt 1 at the bending location, facilitating the bending of the shoe, and greatly reducing the probability of debonding of the welt 1. In some specific embodiments, the deep groove structure 2 of the welt 1 can be a truncated structure that runs through from top to bottom, that is, the welt 1 is truncated.

[0037] Among them, a light material layer 7 is compounded between the front structural layer 6 and the back structural layer 8 of the bridge surface 5. The soles of many shoes are too heavy, and the reason for this is that the weight of the welt 1 is too heavy. In view of this, we have optimized the structure of the welt 1, specifically: a layer of light material layer 7 is compounded between the front structural layer 6 and the back structural layer 8 of the bridge surface 5. The light material can be ethylene-vinyl acetate copolymer or other materials that are lighter than the material of the welt body 4. The light material can fill the volume ratio of the original welt body 4 material, thereby reducing the overall weight of the finished welt 1.

[0038] Among them, the welt 1 is provided with a positioning line 3 that cooperates with the alignment line on the shoe base 9 to fix the welt 1 on the shoe base 9 at a predetermined position. Preferably, the alignment line is located at the toe position on the base 9. Since the welt 1 is long, and the width of the welt 1 at the toe position is usually small, and the bending arc is large, the installation position of the welt 1 at the toe position is difficult to locate. Therefore, the positioning line 3 is set at the toe position of the welt 1, and the alignment line is correspondingly set at the toe position on the base 9. Through the cooperation of the positioning line 3 on the welt 1 and the alignment line on the base 9, the welt 1 can be accurately fixed on the base 9 at a predetermined position. In a specific embodiment, the positioning line 3 is a linear groove, and the alignment line is a linear protrusion.

[0039] The softness of the welt 1 is greater than that of the shoe base 9, and the welt 1 and the shoe base 9 are made of silicone, polyvinyl chloride, polyurethane, ethylene-vinyl acetate, rubber, thermoplastic rubber, artificial leather, genuine leather, woven fabric or ultra-fine fiber synthetic leather. The axial direction of the welt body 4 is consistent with the non-stretchable direction of the bridge surface 5, so that the welt 1 with the bridge surface 5 is not easy to stretch in the axial direction. The welt 1 is softer than the shoe base 9, and it is not easy to generate longitudinal shear force to cause the welt 1 and the base 9 to debond.

[0040] Example 2

[0041] This embodiment provides a shoe, such as Figure 3 As shown, it includes the above-mentioned edge strip 1, base 9, bottom wall 10 and upper 13. The bottom wall 10 is arranged around the outer side surface of the base 9. An assembly space for assembling the upper 13 is formed between the top of the base 9 and the inner side surface of the bottom wall 10. An installation groove adapted to be installed with the edge strip 1 is formed on the outer side surface of the bottom wall 10, and the edge strip 1 is adapted to be installed in the installation groove.

[0042] Among them, an upward convex structure 11 is formed in the installation groove of the bottom wall 10 at a position directly opposite to the sole bend of the base 9, and a deep groove structure 2 extending upward from the bottom is formed on the edge strip 1 at a position directly opposite to the sole bend of the shoe base 9. The convex structure 11 on the bottom wall 10 is adapted to be installed with the deep groove structure 2 on the edge strip 1, and an upward deep groove 12 is formed on the side of the convex structure 11 facing the base 9. The bottom of the convex structure 11 of the bottom wall 10 is formed with a deep groove 12, which further facilitates the bending of the shoe and reduces the stress on the edge strip 1 at the bending position.

[0043] The material of the welt 1 on the existing vulcanized shoes is very limited, and can only be rubber, with a single color and a simple structure. This is because other materials with diverse shapes and colors cannot be combined with the shoe base 9 by vulcanization. For example, the performance of polyvinyl chloride or silicone materials is too stable to be bonded to the shoe base 9 by glue. The degumming rate of products that are forcibly bonded with these two materials remains high. In the utility model, the structure and process of the welt 1 are designed, and the welt 1 with a bridging surface 5 is adopted. During the integral molding process of the back structure of the bridging surface 5 and the back of the welt body 4, the material of the welt body 4 in a liquid state (polyvinyl chloride, silicone, rubber, polyurethane, ethylene-vinyl acetate copolymer, etc.) infiltrates and penetrates into the microporous gap of the fabric layer of the bridging surface 5, and in the subsequent vulcanization or curing process, the welt body 4 and the back structure layer 8 of the bridging surface 5 are tightly connected and cannot fall off, and then the easy-to-adhesive material on the front of the bridging surface 5 and the sole base 9 are glued. On the one hand, the combined strength of the welt 1 and the sole base 9 can be increased, thereby reducing the probability of debonding of the welt 1, which is particularly suitable for soles with high side walls and thick soles. On the other hand, the material of the welt body 4 is not restricted, and materials with variable colors such as silicone and polyvinyl chloride can be used, so that the product styles are varied in color and rich in variety. The soles of many shoes are too heavy. The reason for this is that the weight of the welt 1 is too heavy. In view of this, we have optimized the structure of the welt 1. Specifically, a layer of lightweight material layer 7 is compounded between the front structural layer 6 and the back structural layer 8 of the bridging surface 5. The lightweight material can be ethylene-vinyl acetate copolymer or other materials that are lighter than the material of the welt body 4. The lightweight material can fill the volume proportion of the original welt body 4 material to reduce the overall weight of the finished welt 1. The welt 1 optimized with lightweight materials is light in weight, saves raw materials, and further improves the comfort of wearing shoes.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welt with a bridging surface, characterized in that: The welt is assembled in cooperation with the shoe base, the welt includes a welt body, a bridging surface is integrally formed on the back of the welt body, the bridging surface includes a front structural layer and a back structural layer, the front structural layer is an easily adhesive material layer, the back structural layer is a fabric layer with a microporous permeable structure, one side of the back structural layer is integrally formed with the back of the welt body, the back of the welt body in a molten state infiltrates and penetrates into the microporous gaps of the back structural layer of the bridging surface and solidifies, the bridging surface is firmly fixed to the back of the welt body, and the other side of the back structural layer is compounded with the front structural layer.

2. The edging strip with a bridging surface according to claim 1, characterized in that: The cloth layer is linen, knitted base cloth or material with capillary gaps.

3. The edging strip with a bridging surface according to claim 1 or 2, characterized in that: The easy-adhesive material layer is polyurethane, thermoplastic polyurethane elastomer, polyvinyl chloride, rubber, ethylene-vinyl acetate copolymer, thermoplastic rubber, genuine leather, woven fabric, artificial leather or ultrafine fiber synthetic leather.

4. The edging strip with a bridging surface according to claim 3, characterized in that: A deep groove structure extending upward from the bottom is formed on the edge strip at a position opposite to the sole bend of the shoe base, and the width of the edge strip at a position opposite to the sole bend of the shoe base is smaller than the width of other positions on the edge strip.

5. The edging strip with a bridging surface according to claim 1, characterized in that: A light material layer is compounded between the front structural layer and the back structural layer of the bridging surface.

6. The edging strip with a bridging surface according to claim 1, characterized in that: The welt is provided with a positioning line which cooperates with the alignment line on the shoe base and fixes the welt on the shoe base at a predetermined position.

7. The edging strip with a bridging surface according to claim 1, characterized in that: The softness of the welt is greater than that of the shoe base, and the welt and the shoe base are made of silicone, polyvinyl chloride, polyurethane, ethylene-vinyl acetate, rubber, thermoplastic rubber, artificial leather, genuine leather, woven fabric or microfiber synthetic leather.

8. A shoe, characterized in that: It comprises the edge strip, base, bottom wall and upper as described in any one of claims 1 to 7, the bottom wall is arranged around the outer side surface of the base, an assembly space for assembling the upper is formed between the top of the base and the inner side surface of the bottom wall, and an installation groove adapted to be installed with the edge strip is formed on the outer side surface of the bottom wall, and the edge strip is adapted to be installed in the installation groove.

9. The shoe according to claim 8, characterized in that An upward protrusion structure is formed in the installation groove of the bottom wall at a position opposite to the bend of the sole of the base, and a deep groove structure extending from the bottom upward is formed on the edge strip at a position opposite to the bend of the sole of the shoe base. The protrusion structure on the bottom wall is adapted to be installed with the deep groove structure on the edge strip, and an upward deep groove is formed on the side of the protrusion structure facing the base.

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