Multi-layer composite insole based on high-frequency welding technology

Abstract

The utility model aims to provide the multilayer composite material insole which is stable in bonding and high in foot feeling comfort. The lower shell is matched with the upper shell in an attached mode, the supporting piece is matched with the middle of the lower shell in an attached mode, the heel piece is tightly attached to the bottom face of the lower shell, and a half sole area, a middle waist area and a heel area which are used for being filled with buffering materials are formed on the lower shell from front to back. A first groove for the supporting piece to be attached to is formed in the middle of the lower shell, a second groove for the heel piece to be attached to is formed in the rear side of the lower shell, and a positioning step matched with the upper shell in a positioning mode is formed on the upper portion of the lower shell. The multi-layer composite insole is applied to the technical field of multi-layer composite insoles.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of multilayer composite shoe pad, especially to a composite shoe pad which realizes stable combination of multilayer structure and optimizes foot support and cushioning performance through high-frequency fusion process. BACKGROUND

[0002] Shoes are the first barrier between feet and the ground, and are essential in daily life for everyone, and the quality of a pair of shoes depends on the design of the insole, which can be said to directly determine the technical content of a pair of shoes. Now on the market, shoes have evolved from early protection of feet to more and more functions, such as anti-slip and wear resistance, and when choosing shoes that suit themselves, people are increasingly inclined to choose based on their daily life and environmental needs, as well as their physiological state and pace habits.

[0003] The insole generally includes an outsole in contact with the ground and a midsole in contact with the foot bottom, and traditional multilayer insoles rely on glue to bond, which has the risk of delamination, and the interlayer fitting precision is low, which can easily lead to uneven foot pressure distribution and affect comfort. In the prior art, the design of the midsole cushioning layer is single, and it is difficult to meet the differentiated support needs of different foot areas. In addition, the insole production process is complex, and the positioning accuracy is insufficient, resulting in low efficiency. SUMMARY

[0004] The utility model wants to overcome the prior art's insufficient, provide a kind of multilayer composite material based on high-frequency fusion technology's multilayer composite shoe pad, which is stable and comfortable.

[0005] The utility model employs the technical scheme that the utility model discloses a lower shell, a support sheet closely fitted with the middle part of the lower shell, and a heel sheet closely fitted with the bottom surface of the lower shell, the lower shell forms a front palm area, a middle waist area and a heel area from front to back for filling cushioning material, the middle part of the lower shell forms a first groove for the support sheet to fit, the rear side of the lower shell forms a second groove for the heel sheet to fit, and the upper part of the lower shell forms a positioning step for positioning with the upper shell.

[0006] Further, the middle part of the upper shell forms a bearing part for bearing the arch of the foot.

[0007] Further, the support sheet is provided with a first fitting sheet and a bearing sheet, the bearing sheet is arranged on one side of the first fitting sheet, the first fitting sheet is closely fitted with the bottom of the lower shell, the bearing sheet is closely fitted with the waist of the lower shell, and the first fitting sheet and the bearing sheet are both formed with a plurality of openings.

[0008] Further, the bearing sheet is in the form of an asymmetric involute.

[0009] Further, the back piece is formed with a plurality of fitting holes.

[0010] Further, the front side of the lower shell is provided with a plurality of air permeable lines.

[0011] Further, the middle part of the heel area is formed with a support rib, the middle waist area is formed with a first rib and a second rib, and the first rib, the second rib and the support rib are all supported in cooperation with the upper shell.

[0012] Further, the upper shell is connected with the lower shell by high-frequency fusion welding.

[0013] The beneficial effects of the present application are: the forefoot area, the middle waist area and the heel area are filled with buffer materials, the buffer materials are alternately combined by different Shore hardnesses to meet the pressure distribution function of the human foot, provide more comfortable use experience, the upper shell and the lower shell are connected by high-frequency fusion welding, the upper shell and the lower shell are positioned by the positioning steps, the placement and positioning process is simplified, and the production efficiency is improved; the support piece and the back piece are designed to provide support effect for the arch and the heel of the user, improve the daily wearing comfort, suitable for sports, medical correction, functional foot support and daily insoles, and widely applicable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the first structural schematic diagram of the present application;

[0015] Figure 2 is the second structural schematic diagram of the present application;

[0016] Figure 3 is the explosion diagram of the present application;

[0017] Figure 4 is Figure 3 is the local enlarged view of part A;

[0018] Figure 5 is the structural schematic diagram of the lower shell of the present application;

[0019] Figure 6 is the structural schematic diagram of the support piece and the back piece of the present application.

[0020] In the figure: 1, upper shell; 2, lower shell; 21, forefoot area; 22, middle waist area; 23, heel area; 24, first groove; 25, second groove; 26, positioning step; 27, air permeable line; 28, support rib; 3, support piece; 31, first fitting piece; 32, bearing piece; 33, opening; 4, back piece; 41, fitting hole. DETAILED DESCRIPTION

[0021] As Figures 1 to 6As shown, in the embodiment, the utility model discloses upper shell 1, with the upper shell 1 close cooperation's lower shell 2, with the lower shell 2 middle part close cooperation's support sheet 3 and with the lower shell 2's bottom surface close fit's rear heel piece 4, the lower shell 2 is formed with the front palm area 21 of filling buffer material from front to back, middle waist area 22 and rear heel area 23, the lower shell 2 middle part is formed with the first recess 24 for the close of support sheet 3, the rear side of lower shell 2 is formed with the second recess 25 for the close of rear heel piece 4, the upper part of lower shell 2 is formed with the positioning step 26 of positioning cooperation with upper shell 1, and the rear heel center area is formed in rear heel area 23, and the rear heel center area fills in buffer material for the function of shock absorption, buffering or high elasticity when human body dynamic walking.The front palm area 21, the middle waist area 22 and the rear heel area 23 fill in the buffer material, and the buffer material is alternately combined by different Shore hardness to meet the human foot pressure distribution function, provide more comfortable use experience, the upper shell 1 and the lower shell 2 are fused by high frequency, the upper shell 1 and the lower shell 2 are positioned by the positioning step 26, the upper shell is quickly and accurately positioned, the placing positioning process is simplified, and the production efficiency is improved;Support sheet 3 and rear heel piece 4 design, provide support effect for the arch of the foot and the heel of the foot, improve daily wearing comfort, be applicable to sports, medical correction, functional foot support and daily insole;

[0022] Wherein the buffer material can be the alternative combination of different Shore hardness of ethylene-vinyl acetate copolymer, polyurethane, thermoplastic polyurethane elastomer, hydrogenated styrene-butadiene block copolymer, styrene block copolymer, natural rubber, latex or aromatic polyamide organic fiber etc. Foamed particles or blocks.

[0023] In the embodiment, the middle part of the upper shell 1 is formed with a supporting portion for supporting the arch of the foot.

[0024] In the embodiment, the support sheet 3 is provided with a first fitting sheet 31 and a supporting sheet 32, the supporting sheet 32 is arranged on one side of the first fitting sheet 31, the first fitting sheet 31 is closely fitted with the bottom of the lower shell 2, the supporting sheet 32 is closely fitted with the waist of the lower shell 2, and the first fitting sheet 31 and the supporting sheet 32 are both formed with a plurality of openings 33 with a diameter of 1-5mm and a hole spacing of 2-8mm. The front and rear ends of the first fitting sheet 31 are formed with arc surfaces matched with the first recess 24.

[0025] In the embodiment, the supporting sheet 32 is in the form of an asymmetric involute. The involute curvature radius is 50-80mm, which is suitable for support sheets with different outer shapes, hole shapes and size dimensions and positions.

[0026] In the embodiment, the rear heel piece 4 is formed with a plurality of fitting holes 41 with a diameter of 1-5mm and a hole spacing of 2-8mm, which is suitable for rear heel pieces with different outer shapes, hole shapes and size dimensions and positions.

[0027] In the embodiment, the front side of the lower shell 2 is provided with several air-permeable lines 27. The air-permeable lines 27 have a width of 0.5-2mm and a depth of 0.5mm, forming an air-permeable structure to facilitate the gas exchange between the forefoot area 21 and the inner space of the shoe.

[0028] In the embodiment, the middle part of the heel area 23 is formed with a support rib 28, the middle waist area 22 is formed with a first rib and a second rib, and the first rib, the second rib and the support rib 28 are all supported by the upper shell 1. The first rib and the second rib are used to support the middle part of the arch, and the support rib 28 forms a heel center area in the heel area 23. Different Shore hardnesses are alternately combined to fill the support material in the heel position.

[0029] In the embodiment, the upper shell 1 is connected with the lower shell 2 by high-frequency welding.

[0030] The working principle of the utility model is as follows:

[0031] During the forming, the lower shell 2 is fixed in the jig, the buffer materials with different hardnesses are filled into the forefoot area 21, the middle waist area 22 and the heel area 23, the upper shell 1 is guided and positioned with the lower shell 2 through the positioning step 26, and then the upper shell 1 and the lower shell 2 are formed by high-frequency hot melting, and the support sheet 3 and the heel sheet 4 are connected to the bottom of the lower shell 2.

[0032] Although the embodiments of the utility model are described in actual schemes, but do not constitute the limitation to the meaning of the utility model, for the person skilled in the art, according to the modification of the embodiments of the specification and the combination with other schemes, it is obvious.

Claims

1. A multi-layered composite insole based on high frequency welding technology, characterized in that: The utility model relates to a kind of shoes, including upper shell (1), with the upper shell (1) close to the cooperation of lower shell (2), with the lower shell (2) middle close to the cooperation of support sheet (3), and with the close adherence of rear heel sheet (4) of lower shell (2) bottom, the lower shell (2) is formed with front palm area (21) for filling buffer material, middle waist area (22) and rear heel area (23) from front to back, the lower shell (2) middle is formed with the first recess (24) for the adherence of support sheet (3), the rear side of the lower shell (2) is formed with the second recess (25) for the adherence of rear heel sheet (4), the upper part of the lower shell (2) is formed with the positioning step (26) for the positioning cooperation of upper shell (1).

2. A multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The middle part of the upper shell (1) is formed with a supporting part for supporting arch.

3. A multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The support sheet (3) is provided with a first adhering sheet (31) and a supporting sheet (32), the supporting sheet (32) is arranged on one side of the first adhering sheet (31), the first adhering sheet (31) is closely adhered to the bottom of the lower shell (2), the supporting sheet (32) is closely adhered to the waist of the lower shell (2), and the first adhering sheet (31) and the supporting sheet (32) are both formed with a plurality of openings (33).

4. A multi-layered composite shoe insole based on high frequency welding technology according to claim 3, characterized in that: The supporting sheet (32) is in the form of an asymmetric involute.

5. The multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The rear heel sheet (4) is formed with a plurality of adhering holes (41).

6. The multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The front side of the lower shell (2) is provided with a plurality of air-permeable lines (27).

7. The multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The middle part of the rear heel area (23) is formed with a supporting rib (28), the middle waist area (22) is formed with a first rib and a second rib, and the first rib, the second rib and the supporting rib (28) are all supported by the upper shell (1).

8. The multi-layered composite shoe insole based on high frequency welding technology according to claim 1, characterized in that: The upper shell (1) is connected with the lower shell (2) by high-frequency fusion welding.

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