CN216220396U - Flexible sole and flat shoe - Google Patents

Abstract

The utility model relates to a flexible sole and a flat-sole shoe, wherein the flexible sole comprises a middle sole and an outsole, the middle sole is arranged on the upper side of the outsole in a stacked mode, the middle sole comprises a surface layer and a TPU (thermoplastic polyurethane) elastic layer, and the TPU elastic layer is arranged between the outsole and the surface layer. According to the flexible sole, the TPU elastic layer is arranged in the middle sole, so that the high-resilience flexible sole can better support feet when being worn, the protection of the flexible sole on the feet in the movement process is improved, and the wearing experience is optimized; the insole provided with the TPU elastic layer is lighter in weight, so that the fatigue feeling of feet when the insole is worn for a long time is reduced; simultaneously, the flexible sole of high pliability allows bigger angle of buckling, is favorable to adopting taking in of the shoes of this flexible sole.

Description

Flexible sole and flat shoe

Technical Field

The utility model relates to the technical field of shoe materials, in particular to a flexible sole and a flat shoe.

Background

With the vigorous development of market economy and the improvement of living standard of materials and the vigorous development of clothing market, the shoes are taken as an important part of the clothing field, and with the improvement of economic capability and the change of concept of people, the requirements on the shoes are increasingly improved.

In addition to the different options for style, greater emphasis has been placed on the comfort and portability of footwear. And current shoes money on the market, shoes are only noted to most shoes type beautifully degree, whole shoes body is on the hard side, shoes body quality is heavier, too hard shoe-pad is when the dress is walked, not only can increase the possibility of grinding the foot, can also lead to the psoatic strain, it is healthy to influence, set up comparatively thick sole for increasing shoes body comfort level, the tired sense of bringing is worn for a long time to aggravate again, simultaneously when carrying, the shoes body often occupies great space, still can cause inconvenience for trip or commute.

SUMMERY OF THE UTILITY MODEL

Therefore, a flexible sole is needed to solve the problems of the existing flexible sole, such as hardness, poor flexibility, low wearing comfort and poor portability.

In one aspect, the utility model provides a flexible sole, which comprises a midsole and an outsole, wherein the midsole is stacked on the upper side of the outsole, the midsole comprises a surface layer and a TPU elastic layer, and the TPU elastic layer is arranged between the outsole and the surface layer.

In one embodiment, the outsole comprises a front sole and a rear sole, the thickness of the front sole is smaller than that of the rear sole, the thickness of the rear sole towards one side of the front sole is gradually increased in the direction away from the front sole, the midsole comprises a front sole portion, a middle waist portion and a rear sole portion which are in smooth transition in the length direction, the middle waist portion is connected with the front sole portion and the rear sole portion, and the thickness of the middle waist portion and the thickness of the rear sole portion are smaller than that of the front sole portion.

In one embodiment, the midsole further comprises a filling layer, the filling layer is arranged on one side of the TPU elastic layer facing the outsole, a containing area is arranged on one side of the outsole facing the midsole, and the filling layer is filled in the containing area.

In one embodiment, the thickness of the filling layer ranges from 1.5mm to 3 mm.

In one embodiment, the filling layer is made of spunlace nonwoven fabric.

In one embodiment, the midsole further comprises a fixing layer disposed between the TPU elastomer layer and the filling layer, the fixing layer for fixing the filling layer within the receiving area.

In one embodiment, the thickness of the fixing layer ranges from 0.7mm to 1.2 mm.

In one embodiment, the fixing layer comprises a front fixing part and a rear fixing part, the front fixing part fixes the front end of the filling layer to the front sole, and the rear fixing part fixes the rear end of the filling layer to the rear sole.

In one embodiment, the thickness of the anterior sole ranges from 3mm to 6mm, and the thickness of the posterior sole ranges from 13mm to 15 mm.

In one embodiment, the rear sole is provided with a column hole along the vertical direction of the thickness.

In one embodiment, the thickness of the TPU elastic layer ranges from 3mm to 5 mm.

In one embodiment, the thickness of the surface layer ranges from 0.7mm to 1.2 mm.

In one embodiment, the surface layer is made of natural leather or artificial leather.

In another aspect, the utility model provides a flat shoe comprising an upper and a flexible sole as described above, the upper being provided on the upper side of the flexible sole, part of the edge of the upper being attached to the flexible sole.

In one embodiment, the upper comprises a separately provided front upper and rear upper, which are connected to the front and rear ends of the flexible sole, respectively.

Above-mentioned flexible sole through set up the TPU elastic layer in the insole, has promoted flexible sole resilience, has reduced the weight of flexible sole, has guaranteed the flexibility of flexible sole. When the shoe is worn, the high-resilience flexible sole can better support feet, the protection of the flexible sole on the feet in the movement process is improved, and the wearing experience is optimized; the insole provided with the TPU elastic layer is lighter in weight, so that the fatigue feeling of feet when the insole is worn for a long time is reduced; simultaneously, the TPU elastic layer has improved the sole pliability to adapt to bigger buckling, thereby be favorable to adopting taking in of the shoes of this flexible sole.

Drawings

FIG. 1 is a schematic view of the construction of one embodiment of a flat shoe;

FIG. 2 is a schematic structural view of a flexible sole according to an embodiment;

FIG. 3 is an exploded view of an embodiment of a flexible sole;

FIG. 4 is a schematic view of the flexible sole of one embodiment in a folded configuration.

Description of reference numerals:

10. a flexible sole; 100. a outsole; 110. the bottom of the front palm; 120. the back sole; 200. a midsole; 201. a front palm portion; 202. the middle waist part; 203. a rear palm portion; 210. a surface layer; 220. a TPU elastomeric layer; 230. a filling layer; 240. a fixed layer; 20. an upper.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present invention, when a layer is referred to as being "on" another layer, it can be directly formed on the other layer, or intervening layers may also be present. Thus, it will be understood that when a layer is referred to as being "directly on" another layer, there are no intervening layers interposed therebetween.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 4, fig. 1 is a schematic structural view showing a flat shoe according to an embodiment of the present invention, fig. 2 is a schematic structural view showing a flexible sole 10 according to an embodiment of the present invention, fig. 3 is an exploded view showing the flexible sole 10 according to an embodiment of the present invention, and fig. 4 is a schematic structural view showing the flexible sole 10 according to an embodiment of the present invention when folded in half. The flexible sole 10 of the present invention comprises a midsole 200 and an outsole 100, wherein the midsole 200 is used to improve the softness of the shoe and improve the cushioning performance of the flexible sole 10, the outsole 100 is used to improve the wear resistance and the slip resistance of the flexible sole 10, the midsole 200 is stacked on the upper side of the outsole 100, the midsole 200 comprises a surface layer 210 and a TPU elastic layer 220, the surface layer 210 is in contact with the foot of the user, and the TPU elastic layer 220 is disposed between the surface layer 210 and the outsole 100.

According to the flexible sole 10 disclosed by the utility model, the TPU elastic layer 220 is arranged in the insole 200, the TPU high-resilience foam surface layer is formed by assembling TPU foaming spheres with high elasticity and light weight, the excellent resilience performance and the cushioning effect are achieved, and meanwhile, the characteristics of light weight and good air permeability are achieved, so that the resilience of the flexible sole 10 is improved, the weight of the flexible sole 10 is reduced, and the flexibility of the flexible sole 10 is ensured. When the shoe is worn, the high-resilience flexible sole 10 can better support feet, so that the protection of the flexible sole 10 on the feet in the movement process is improved, and the wearing experience is optimized; the midsole 200 provided with the TPU elastic layer 220 is lighter in weight, reducing the feeling of fatigue of the foot when worn for a long time; meanwhile, the flexible sole 10 with high flexibility allows a larger bending angle, the space utilization rate during storage can be improved by folding or curling the flexible sole 10, and the storage of shoes adopting the flexible sole 10 is facilitated.

In the present embodiment, the front sole 110 and the rear sole 120 may be provided as two parts of the integrated outsole 100 connected to each other or may be provided separately. The advantage of the integral arrangement is that the number of parts of the flexible sole 10 is reduced, which contributes to a reduction in the manufacturing and assembly costs; the advantage of the separate arrangement is that the rigidity of the separate position is less, and the folding of the flexible sole 10 is easier to achieve, improving portability.

In some embodiments, the elastic modulus of the TPU elastic layer 220 ranges from 150Mpa to 500Mpa, for example, the elastic modulus of the TPU elastic layer 220 may be 150Mpa, 200Mpa, 300Mpa or 500Mpa, and the specific value of the elastic modulus of the TPU elastic layer 220 is not limited. The TPU elastic layer 220 has the advantages that the TPU elastic layer 220 has the characteristics of light weight, high resilience and high flexibility, the fatigue feeling is reduced, the wearing comfort is improved, and the space utilization rate during storage is improved.

In some embodiments, the hardness of the TPU elastic layer 220 ranges from 15HD to 64HD, for example, the hardness of the TPU elastic layer 220 may be 15HD, 20HD, 42HD or 65HD, and the hardness of the TPU elastic layer 220 is not limited herein. The hardness of the TPU elastic layer 220 is set within the range, so that the TPU elastic layer 220 within the range has the characteristics of light weight, high resilience and high flexibility, the fatigue feeling can be reduced, the wearing comfort is improved, and the space utilization rate in storage is improved; meanwhile, in the manufacturing process, the TPU elastic layer 220 with the hardness range has good material flowability and quick forming, and is beneficial to improving the production efficiency; in addition, the TPU elastic layer 220 within this range also has good yellowing resistance, which is beneficial to enhancing the appearance of the flexible sole 10.

Referring to fig. 2, in some embodiments, outsole 100 includes a front sole 110 and a rear sole 120, the thickness of front sole 110 is smaller than that of rear sole 120, and the thickness of rear sole 120 increases toward the front sole side in a direction away from front sole 110. The middle sole 200 comprises a front sole portion 201, a middle waist portion 202 and a rear sole portion 203 along the length direction, the middle waist portion 202 is connected with the front sole portion 201 and the rear sole portion 203, the front sole portion 201, the middle waist portion 202 and the rear sole portion 203 are in smooth transition, the thickness of the middle waist portion 202 and the thickness of the rear sole portion 203 are smaller than that of the front sole portion 201, and through the arrangement, when the middle sole is stacked on a big sole, the flexible sole is thin in the middle and thick at two ends. The benefit that sets up like this lies in, flexible sole 10 deviates from ground one side and accords with user's foot curve more, the front end and the rear end of flexible sole can play better supporting effect, the middle part rigidity of flexible sole 10 is less, the pliability of flexible sole 10 has further been promoted, help optimizing the travelling comfort of wearing in the motion process, and simultaneously, the middle part position of flexible sole 10 is thinner, be favorable to realizing buckling along this middle part, with promote space utilization as far as possible, and then promote the portability.

In other embodiments, an air cushion layer is disposed in the TPU elastic layer 220, and the air cushion layer has the advantages of further improving the cushioning and shock absorbing capabilities of the midsole 200, greatly reducing the impact on the foot during sports, and improving the wearing comfort. In other embodiments, the TPU elastic layer 220 may further include a non-newtonian fluid layer, which is advantageous in that the flexible sole 10 has different hardness in different motion states, for example, the non-newtonian fluid layer is less impacted and lower in hardness during daily walking, which provides better cushioning performance, and the non-newtonian fluid layer is more impacted and higher in hardness during heavy motion, which provides better support effect, and prevents the foot from being strained or fatigued due to the softness of the midsole 200 during heavy motion.

In some embodiments, the thickness of the TPU elastic layer 220 ranges from 3mm to 5mm, for example, 3mm, 4mm, 4.5mm, or 5mm, and the specific thickness of the TPU (Thermoplastic polyurethane elastomer) high resilience foam layer 220 is not limited herein. TPU elastic layer 220 thickness influences the resilience and the pliability of flexible sole 10, the pliability of the too thick TPU elastic layer 220 of thickness is relatively poor, flexible sole 10 not only is difficult to fold or curls and realizes accomodating, simultaneously because flexible sole 10 is too soft to lead to the support nature relatively poor, it sprains to change the emergence in the motion process, and the thin flexible sole 10 of thickness is difficult to play the effect of bradyseism again, set up thickness and be 3mm ~ 5 mm's TPU elastic layer 220, make flexible sole 10 when taking into account resilience and pliability, possess better support nature, realize the protection to the foot better.

In some of these embodiments, midsole 200 still includes filling layer 230, filling layer 230 sets up in TPU elastic layer 220 towards one side of outsole 100, specifically, outsole 100 is provided with towards midsole 200 one side and holds the district, filling layer 230 sets up in holding the district, the benefit that sets up filling layer 230 lies in, on the one hand, provide the support for TPU elastic layer 220, avoid TPU elastic layer 220 direct and the harder outsole 100 direct contact of texture simultaneously, damage TPU elastic layer 220 is simultaneously, filling layer 230 still is favorable to promoting the gas permeability of flexible sole 10, and then promote the travelling comfort of flexible sole 10.

In some embodiments, the thickness of the filling layer 230 ranges from 1.5mm to 3mm, for example, the filling thickness may be 1.5mm, 2mm, 2.5mm, or 3mm, and the specific value of the thickness of the filling layer 230 is not limited herein. The thickness of the filling layer 230 affects the breathability of the flexible sole 10 and the protection of the TPU elastic layer 220, an excessively thick filling layer 230 affects the breathability of the flexible sole 10, and an excessively thin filling layer 230 does not function to support the TPU elastic layer 220. The filling layer 230 is made of spunlace nonwoven fabric, which is advantageous in that the filling layer 230 has both air permeability and support.

In some embodiments, the midsole 200 further includes a fixing layer 240 for fixing the filling layer 230 in the receiving region, the fixing layer 240 is disposed between the TPU elastic layer 220 and the filling layer 230, the fixing layer 240 is connected to the outsole 100 at the edge thereof to fix the filling layer 230 and the outsole 100 as a whole, and the fixing layer 240 may be made of a material such as a tank or a loose material to improve the waterproof property and the breathability of the flexible sole 10. The advantage of providing the fixing layer 240 is that the filling layer 230 of the flexible sole 10 is prevented from being separated from the receiving region when the flexible sole is folded or rolled, which improves the integrity of the flexible sole 10 and is beneficial to prolonging the service life of the flexible sole 10.

In the present embodiment, specifically, the fixing layer 240 may be separately provided as a front fixing layer 240 and a rear fixing layer 240, the front fixing layer 240 fixing the front end of the filling layer 230 to the front sole 110, and the rear fixing layer 240 fixing the rear end of the filling layer 230 to the rear sole 120. The advantage of providing the front fixing layer 240 and the rear fixing layer 240 is that the filling layer 230 is prevented from being separated during the folding process, and the fixing effect of the fixing layer 240 on the filling layer 230 is further improved.

In some embodiments, the thickness of the fixing layer 240 ranges from 0.7mm to 1.2mm, for example, the thickness of the filling layer may be 0.7mm, 0.8mm, 1mm, or 1.2mm, and the specific value of the thickness of the filling layer 230 is not limited.

In some embodiments, the thickness of the anterior sole 110 ranges from 3mm to 6mm, for example, the thickness of the anterior sole 110 may be 3mm, 4mm, 5mm or 6mm, where the specific value of the thickness of the anterior sole 110 is not limited, and the thickness of the posterior sole 120 ranges from 13mm to 15mm, for example, the thickness of the posterior sole 120 ranges from 13mm, 14mm, 14.5mm or 15mm, where the value of the thickness of the posterior sole 120 is not limited. This also provides the benefit that the flexible sole 10 is both wear resistant and conforms to the user's habits.

In some of these embodiments, the metacarpal sole 120 is provided with post holes in a vertical direction of the thickness, that is, when the flexible sole 10 is placed on the ground, the hole axes of the post holes are parallel to the ground. In this embodiment, the pillar hole has the advantages of improving the cushioning performance of the flexible sole 10 and improving the wearing comfort; on the other hand, the mass of the flexible sole 10 is reduced, thereby reducing the feeling of fatigue in wearing for a long time.

In some embodiments, the natural rubber in the outsole 100 is in a range of 60% to 70%, for example, the natural rubber may be 60%, 62.5%, 65% or 70%, where the specific content of the natural rubber in the outsole 100 is not limited, and the outsole 100 within the natural rubber content range has the advantages of improving flexibility, improving wear resistance, being not easily broken after being folded for multiple times, and being beneficial to prolonging the service life of the flexible sole 10.

In some embodiments, the side of the outsole 100 facing away from the midsole 200 is provided with a non-slip portion, which may be provided as a corrugated pattern or as a partially connected block, and the specific shape of the non-slip portion is not limited herein. The advantage that sets up antiskid portion lies in, on the one hand antiskid portion has increased the frictional force between flexible sole 10 and the ground, promotes flexible sole 10's antiskid nature, and on the other hand antiskid portion has promoted flexible sole 10's pliability, is favorable to realizing the fifty percent discount of flexible sole 10, and then has promoted the portability.

In some embodiments, the surface layer 210 is disposed on the uppermost layer of the flexible sole 10 and directly contacts with the foot of the user, the thickness of the surface layer 210 ranges from 0.7mm to 1.2mm, for example, the thickness of the surface layer 210 may be 0.7mm, 0.8mm, 1mm or 1.2mm, and the specific value of the thickness of the surface layer 210 is not limited herein. The benefit of providing the surface layer 210 is to improve the integrity, slip resistance and wearing comfort of the flexible sole 10 while optimizing the appearance of the flexible sole 10.

In some embodiments, the material of the surface layer 210 is natural leather or artificial leather, wherein the natural leather may be sheep skin or pig skin, and the specific material of the natural leather is not limited herein. The surface layer 210 made of natural leather has advantages in that the surface layer 210 has good flexibility and air permeability, and is not easily allergic to the human body, and is comfortable and healthy to wear. The artificial leather has the advantages that surface grains are easier to control, and the manufacturing cost is lower.

In some embodiments, the surface layer 210 is provided with air holes for increasing the air permeability of the flexible sole 10, and the surface layer 210 is provided with bacteriostatic agents, so that the antibacterial performance of the flexible sole 10 can be improved, and the cleaning performance of the flexible sole 10 can be improved.

In some embodiments, the surface layer 210, the TPU elastic layer 220, the fixing layer 240, the filling layer 230, and the outsole 100 may be connected by gluing, and in other embodiments, the layers of the flexible sole 10 may be connected by sewing or a combination of sewing and gluing, and the connection manner of the layers of the flexible sole 10 is not limited herein.

The utility model also provides a flat shoe, which comprises the flexible sole 10 and the vamp 20, wherein the vamp 20 is arranged on the upper side of the flexible sole 10, part of the edge of the vamp 20 is connected with the flexible sole 10, and the foot of a user is wrapped between the vamp 20 and the flexible sole 10.

In the present embodiment, the material of the upper 20 is PU leather, PVC leather, canvas, nylon cloth, genuine leather, or a combination thereof, and the specific material of the upper 20 is not limited herein.

In some of these embodiments, vamp 20 includes preceding vamp and the back vamp that the separation set up, preceding vamp sets up in the upside of preceding sole 110, the back vamp sets up in the upside of back sole 120, the benefit of setting up vamp 20 separation lies in, on the one hand, when wearing, position between preceding vamp and the back vamp is direct to be in contact with the air, can effectively promote the gas permeability of flat shoe and reduce the inside temperature of flat shoe, on the other hand, position between preceding vamp and the back vamp can provide the space of deformation for the shoes body, structurally interfere when having avoided the flat shoe to fold or curl, cooperate high pliability flexible sole 10, make the space utilization of flat shoe when accomodating further.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a flexible sole, its characterized in that includes insole and outsole, the upside of outsole is located to the insole stack, the insole includes superficial layer and TPU elastic layer, the TPU elastic layer set up in between outsole and the superficial layer, the insole includes smooth transition's preceding palm portion, well waist and back palm portion along length direction, well waist is connected preceding palm portion and back palm portion, the thickness of well waist and back palm portion is less than the thickness of preceding palm portion.

2. The flexible sole of claim 1, wherein the outsole includes a forefoot sole and a rearfoot sole, the forefoot sole having a thickness less than the rearfoot sole, the rearfoot sole increasing in thickness toward a side of the forefoot sole away from the forefoot sole.

3. The flexible sole according to claim 2, wherein the midsole further comprises a filling layer, the filling layer is disposed on a side of the TPU elastic layer facing the outsole, a receiving area is disposed on a side of the outsole facing the midsole, and the filling layer is filled in the receiving area.

4. The flexible sole according to claim 3, wherein the filling layer is made of spunlace nonwoven fabric.

5. The flexible sole according to claim 3, characterized in that said mid-sole further comprises a fixing layer interposed between said TPU elastomer layer and said filling layer, said fixing layer being intended to fix said filling layer in said housing zone.

6. The flexible sole of claim 5, wherein the anchoring layer includes a front anchoring portion that anchors the front end of the filling layer to the front sole and a rear anchoring portion that anchors the rear end of the filling layer to the rear sole.

7. The flexible sole according to claim 2, characterized in that the thickness of the forefoot sole ranges from 3mm to 6mm and the thickness of the rearfoot sole ranges from 13mm to 15 mm.

8. The flexible sole of claim 2, wherein said hind sole is provided with post holes in a direction perpendicular to the thickness.

9. The flexible sole according to claim 1, wherein the thickness of the TPU elastomer layer ranges from 3mm to 5 mm.

10. Flat shoe, characterized in that it comprises an upper and a flexible sole according to any one of claims 1 to 9, said upper being arranged on the upper side of said flexible sole, part of the edge of said upper being connected to said flexible sole.

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