CN217547378U

CN217547378U - Anti-torsion sole

Info

Publication number: CN217547378U
Application number: CN202221182317.8U
Authority: CN
Inventors: 刘凡; 王旭; 甘舸; 冯云平; 孟欢欢
Original assignee: Li Ning China Sports Goods Co Ltd
Current assignee: Li Ning China Sports Goods Co Ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-11
Anticipated expiration: 2032-05-17

Abstract

The utility model provides an antitorque commentaries on classics sole and sole, the heel position department of insole is provided with antitorque support piece, and antitorque support piece is including the side wall that is located the inside and outside both sides of sole, and the height of side wall is 10-50mm, and the thickness top-down of side wall increases gradually, and gradual change scope is 0.5 ~ 15mm, and antitorque support piece is made by PP or POP material, and the quality is 5-16g. The utility model has the advantages that: on the premise of satisfying good support and comfort, the anti-torsion support piece of the utility model has thicker thickness, and the three-dimensional shape can extend to the middle and rear foot area of the insole, thereby effectively preventing side turning and improving the stability of the shoe; the arch support part in the anti-torsion support member is in a certain three-dimensional shape and can be better attached to the arch, so that the stability and the torsion resistance of the shoe are further improved, the pressure of the sole can be effectively dispersed, and the sports injury is reduced.

Description

Anti-torsion sole

Technical Field

The utility model belongs to shoes goods field especially relates to an antitorque commentaries on classics sole.

Background

In the process of exercise and fitness, different exercise forms such as running, jumping, twisting and the like can be involved, wherein the ankle joint is used as a yielding joint with the largest load of a human body, the weight of the whole body is borne when the ankle joint stands, and the load of part of the joint reaches 3-5 times of the self weight of the human body during exercise, so that the ankle joint is more prone to sprain which accounts for about 10% of all exercise losses during the exercise.

In order to reduce ankle sprain or improve the stability of the shoe during sports, the prior art generally designs insoles, shoe sole material improvement and the like to increase the stability of the shoe sole, so as to slow down the ankle eversion process during sports, or adopts a form of additionally arranging an anti-torsion support in the shoe sole to realize the anti-torsion effect of the shoe sole. However, there has been no report on the design and improvement of the two parts of the rear cover and the arch support made of the hard foamed material to achieve the same effect.

SUMMERY OF THE UTILITY MODEL

To easily take place the ankle joint and sprain among the motion processes such as running, jump, turn round among the prior art, the problem that running shoes stability is not enough, the utility model provides an antitorque commentaries on classics sole.

The technical scheme of the utility model as follows: an anti-torsion sole is characterized in that an anti-torsion supporting piece is arranged at the heel position of a midsole, the anti-torsion supporting piece comprises side walls located on the inner side and the outer side of the sole, the height of each side wall is 10-50mm, the thickness of each side wall is gradually increased from top to bottom, the gradual change range is 0.5-15 mm, the anti-torsion supporting piece is made of PP or POP materials, and the weight of the anti-torsion supporting piece is 5-16g.

Furthermore, the anti-torsion supporting piece also comprises a bottom plane, the bottom plane is fixedly connected with the insole, the inner side wall and the outer side wall are respectively arranged on two sides of the bottom plane, and the thickness of the bottom plane is 10-20mm.

Further, the side wall is provided in a length region from the half sole to the heel of 25% to 100%.

Furthermore, the thickness of the side wall is gradually increased from top to bottom, the gradual change range is 0.5-10 mm, the height of the side wall is gradually reduced from the heel to the front palm, and the gradual change range is 10-50mm.

Further, the Shore hardness of the anti-torsion supporting piece is 65C +/-5, and the density of the anti-torsion supporting piece is 0.10 +/-0.02 g/cm ³ And the weight is 12-16g.

Furthermore, the inner side wall and the outer side wall are of a semi-annular structure which is arranged integrally and used for wrapping the heel.

Further, the shore hardness of the anti-torsion supporting piece is 70C +/-5, and the density is 0.16 +/-0.04 g/cm ³ And the weight is 5-10g.

Further, the anti-torsion support also comprises an arch support which is arranged in a length area of 30% -90% of the inner side edge of the insole from the half sole to the heel,

furthermore, the thickness of the arch support part is gradually reduced from the inner side edge of the sole to the middle part of the insole, and the gradual change range is 10-30 mm; the length is 100-150mm, and the width is 10-50mm.

Further, the Shore hardness of the arch support part is 65C +/-5, and the density is 0.10 +/-0.02 g/cm ³ The weight is 6-10g.

The utility model has the advantages that: on the premise of satisfying good support and comfort, the anti-torsion support piece of the utility model has thicker thickness, and the three-dimensional shape can extend to the middle and rear foot area of the insole, thereby effectively preventing side turning and improving the stability of the shoe; the arch support part in the anti-torsion support member is in a certain three-dimensional shape and can be better attached to the arch, so that the stability and the torsion resistance of the shoe are further improved, the pressure of the sole can be effectively dispersed, and the sports injury is reduced.

Drawings

FIG. 1 is an exploded view of the sole of example 1;

FIG. 2 is a lateral side view of the sole of example 1;

FIG. 3 is a medial side view of the sole of example 1;

FIG. 4 is an exploded view of the sole of example 2;

FIG. 5 is a lateral side view of the sole of example 2;

FIG. 6 is a medial side view of the sole of example 2;

FIG. 7 is an exploded view of the sole of example 3;

FIG. 8 is a lateral elevational view of the sole of example 3;

FIG. 9 is a medial side view of the sole of example 3.

FIG. 10 is a schematic view of the valgus and varus angles of the foot;

FIG. 11 is a schematic view of the foot strike;

FIG. 12 is a schematic illustration of a midfoot torsion resistance test in FIG. 1;

fig. 13 is a schematic view of the midfoot torsion resistance test of fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The traditional shoe components such as the heel cap and the arch support are usually made of injection-molded hard plastics or elastomer materials, such as Thermoplastic Polyurethane (TPU), polyamide Elastomer (PEBA), thermoplastic styrene elastomer (TPE), polyether ester elastomer (TPEE), nylon (PA), and composite materials reinforced by adding short fibers or inorganic fillers, or carbon fiber composite materials. The density is 1.0-1.25g/cm ³ The shore hardness is 55-80D, which can ensure the support of the sole to the instep, but usually makes the weight and hardness of the rear cover and the arch support part larger, and even the design of the shape and structure of the rear cover and the arch support part can cause the wearing comfort of the whole sole to be poor.

Therefore, the utility model adopts PP or POP material as the main base material to process the hard foamed shoe rear cover and the arch support, and the density is 0.07-0.20g/cm ³ And the Shore hardness is 55-75C, so that the comfort of the sole is not influenced by the designed rear shoe cover and arch support part due to the increase of weight.

The utility model discloses a better laminating of heel or arch of foot is realized to the antitorque support piece's of the gradual change thickness of irregular form setting to dispersion foot pressure improves shoes stability and promotes antitorque performance.

Several specific arrangements of the anti-torque support are as follows:

example 1

As shown in fig. 1 to 3, in the sole of shoes, a component 1 is an anti-torsion support member, which is arranged at the heel position of a midsole and has asymmetric inner and outer side walls and a bottom plane, the inner and outer side walls are respectively arranged at two sides of the bottom plane, the bottom plane is fixedly connected with the midsole so as to realize the effective support of the inner and outer side walls to two sides of the heel position, the thickness of the bottom plane is 10-20mm, the inner side wall is arranged in a length area from the half sole to 25% -100% of the heel, the thickness is gradually changed from 0.5 mm to 10mm, the thickness is gradually increased from top to bottom, the height of the inner side wall is gradually reduced from the heel to the middle foot, and the gradual change range is 10-50 mm; the thickness and height of the lateral side are the same as those of the medial side, and the lateral side is arranged in a length area from the half sole to the heel of 50-100%. The material of the component 1 is preferably PP or POP, the Shore C hardness is 65C +/-5, and the density is 0.10 +/-0.02 g/cm ³ And the weight is 12-16g.

Part 2 is a midsole, the material characteristics: shore hardness 42C +/-3 and density 0.13 +/-0.02 g/cm ³ The rebound resilience rate is 75 percent; any one or more of thermoplastic polyamide elastomers, thermoplastic polyurethanes, thermoplastic polyetherester elastomers are preferred.

Part 3 is an outsole, material characteristics: shore hardness of 65A +/-3 and density of 1.10-1.15g/cm ³ DIN abrasion resistance and abrasion loss of 40-50mm ³ (ii) a The shoe outsole is preferably made of polyurethane.

Example 2

As shown in fig. 4 to 6, the component 1 is an arch support part which is arranged at the inner side edge of the middle sole from the half sole to the heelA shoe 30% to 90% length area; the length of the arch support part is 100-150mm, the width is 10-50mm, the thickness is gradually changed from 10-30 mm, and the thickness is gradually reduced from the inner side of the shoe to the middle part of the insole. The material of the arch support part is preferably PP or POP, the Shore hardness is 65C +/-5, and the density is 0.10 +/-0.02 g/cm ³ The weight is 6-10g.

Parts

2 and 3 are the same as in example 1.

Example 3

In the soles shown in fig. 7 to 9, the component 1 is an anti-torsion supporting member, is arranged at the heel position of the midsole and is of a semi-annular wrapping structure to wrap the whole heel, the anti-torsion supporting member is provided with symmetrical inner and outer side walls, the inner and outer side walls are fixedly connected with the midsole, the thickness of the anti-torsion supporting member is gradually increased from top to bottom, and the gradual change range is 0.5-15 mm; the height is 10-50mm. The material of the component 1 is preferably PP or POP, the Shore C hardness is 70C +/-5, and the density is 0.16 +/-0.04 g/cm ³ 5-10g.

Parts

2 and 3 are the same as in example 1.

Comparative example 1

The sole of comparative example 1 is a conventional running shoe sole commercially available, and comprises a conventional heel cover and a midfoot support member, the heel cover being a general injection molded part, the shore hardness being 60D + -15, and the density being 1.10-1.15g/cm ³ The thickness is 1.0-2.0mm, the heel wrapping part is only vertical to the sole and does not extend to the insole area, and the weight is 12-16g; the middle foot support piece is an injection molding piece arranged in the interlayer in the middle of the insole, has Shore hardness of 60D +/-20 and density of 1.10-1.15g/cm ³ And a thickness of 1.0 to 2.0mm, in comparative example 1, the sole and outsole were the same as in example 1.

The finished shoes of examples 1-3 and comparative example 1 were subjected to a torsion resistance comparison test to test the difference in stability during running. The basis weight information for examples 1-3 and comparative example 1 is shown in table 1.

The experimental method comprises the following steps: the Test data were tested according to the American Society for Testing and Materials (ASTM) Running shoe stability Comparison Test Standard (ASTM F1833-2011Standard Test Method for Comparison of real foot Motion Control Properties of Running Shoes). 8 male healthy runners with the foot size of US9 were recruited, four running shoes were worn to run on the treadmill at a speed of 3.3m/s, and 10 consecutive right leg kinematics were collected after 1 minute of steady running. The test procedure is shown in fig. 10 and 11, and the test results are shown in table 2.

In addition, the midfoot torsion resistance of the four pairs of running shoes was tested according to the test method in the shoes torsion performance test standard of the people's republic of China (GB/T32024-2015). The test process is shown in fig. 12 and 13, the instrument fixes the toe cap position 4, twists the heel position 5, turns the heel outsole outwards by 30 degrees to form an everted torsion resistance, and turns inwards by 10 degrees to form an everted torsion resistance. The test results are shown in Table 3.

TABLE 1 test footwear weight information

Shoe model	Example 1	Example 2	Example 3	Comparative example 1
					Weight (g) alone	234.5	220.5	226.5	273.8

TABLE 2 comparison of biomechanical stability indices

Note: the ankle knuckle inward and outward turning range = (normal angle-outward turning angle) + (normal angle-inward turning angle), the foot clapping angular velocity is the velocity of the change of the foot clapping ground angle alpha from heel landing to full sole landing, the greater the maximum angular velocity of the foot clapping is, the more unstable the foot clapping is, and otherwise, the more stable the foot clapping is; the smaller the angle or the range of angles and the angular velocity, the better.

TABLE 3 torsion resistance comparison of midfoot

Torque of	Torque from outside (Nm)	Inversion Torque (Nm)
			Example 1	3.45	6.46
Example 2	2.98	4.71
			Example 3	2.23	3.78
Comparative example 1	2.17	3.80

Note: the larger the torque value, the better the anti-torsion performance of the shoe is shown; otherwise, the worse the anti-twist performance.

The results show that the three running shoes corresponding to examples 1 to 3 are lighter than the running shoe of comparative example 1; compared with the comparative example 1, the shoe heel cover in the embodiment 1 has thicker thickness under the condition of equivalent weight, the three-dimensional shape extends to the middle and rear foot area of the insole, the side turning can be effectively prevented, the stability of the shoe is improved, meanwhile, the shape can have the function of force transmission, the hardness is lower, and the shoe heel cover is more comfortable to wear.

Compared with the comparative example 1, the embodiment 2 has the advantages that the weight of the arch support part is not increased, the arch support part is in a certain three-dimensional shape due to the gradual change of the thickness, so that the arch support part can be better attached to the arch, the stability and the torsion resistance of the shoe are further improved, meanwhile, the pressure of the sole of the foot can be effectively dispersed, and the movement damage is reduced.

Example 3 is similar to comparative example 1 in shape, but has a better heel wrap property and a lower hardness compared with comparative example 1 in the case of increasing the overall thickness, and is advantageous for improving the stability during exercise.

As can be seen from table 2, examples 1 and 3 are effective in reducing the maximum eversion angle and the range of eversion and eversion of the ankle joint, as compared to comparative example 1; and reducing the angular velocity of the foot swatter; example 2 since only the midfoot support part has no heel cap, the maximum ankle eversion angle and the range of varus and valgus can be reduced to a small extent as compared with comparative example 1.

As can be seen from the results of the foot torsion resistance in Table 3, examples 1 and 2 have more excellent torsion resistance of the midfoot due to higher fitting properties to the midfoot, which is advantageous for improving the supporting properties and the pedaling stretch of the entire shoe during sports, and example 3 has no significant change in the torsion resistance due to not extending to the midfoot region.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. An anti-torsion sole comprises a midsole and is characterized in that an anti-torsion supporting piece is arranged at the heel position of the midsole and comprises side walls located on the inner side and the outer side of the sole, the height of each side wall is 10-50mm, the thickness of each side wall is gradually increased from top to bottom, the gradual change range is 0.5-15 mm, the anti-torsion supporting piece is made of PP or POP materials, and the weight of the anti-torsion sole is 5-16g.

2. The twist-resistant sole according to claim 1, wherein: the anti-torsion supporting piece further comprises a bottom plane, the bottom plane is fixedly connected with the midsole, the inner side wall and the outer side wall are respectively arranged on two sides of the bottom plane, and the thickness of the bottom plane is 10-20mm.

3. The twist-resistant sole according to claim 2, wherein: the side wall is provided in a length region from the half sole to the heel of 25% to 100%.

4. The twist resistant sole as in claim 3, wherein: the thickness of the inner side wall and the outer side wall gradually increases from top to bottom, the gradual change range is 0.5-10 mm, the height of the inner side wall and the outer side wall gradually decreases from the heel to the front palm, and the gradual change range is 10-50mm.

5. The anti-twist sole according to any one of claims 2 to 4, characterized in that said anti-twist support has a Shore hardness of 65C ± 5 and a density of 0.10 ± 0.02g/cm ³ And the weight is 12-16g.

6. The twist resistant sole as recited in claim 1, wherein the medial and lateral side walls are integrally formed as a semi-annular structure for enclosing the heel.

7. The twist resistant sole according to claim 6, wherein the twist resistant support member has a shore hardness of 70C ± 5 and a density of 0.16±0.04g/cm ³ And the weight is 5-10g.

8. The anti-twist sole according to claim 1 or 6, wherein the anti-twist support further comprises an arch support provided in a length region of 30 to 90% of the medial side of the midsole from the forefoot to the heel.

9. The twist resistant sole according to claim 8, wherein the arch support tapers in thickness from the medial side of the sole to the medial mid-sole in the range of 10 to 30mm; the length is 100-150mm, and the width is 10-50mm.

10. The twist resistant sole according to claim 8, wherein the arch support has a shore hardness of 65C ± 5 and a density of 0.10 ± 0.02g/cm ³ The weight is 6-10g.