CN104490008A - EVA damping element and shoe sole with the same - Google Patents

Abstract

The invention provides an EVA shock absorbing element capable of effectively integrating the EVA waste head, effectively giving full play to the performance characteristics of the EVA waste head, and realizing the effective secondary recycling of the EVA waste head and a shoe sole with the shock absorbing element. The EVA shock absorbing element includes an element body having a filling groove, the filling groove is filled with a gel medium, and EVA waste head particles are distributed in the gel medium; the EVA waste head particles are chopped by the EVA waste head Thus, the maximum radial size of the EVA waste head particles is smaller than the groove depth of the filling groove; the notch of the filling groove of the element body is also covered with a sealing sheet, and the sealing sheet makes the filling groove form a closed space.

Description

A kind of EVA damping element and sole with the damping element

technical field

The invention relates to an EVA damping element and a shoe sole with the damping element.

Background technique

Shoes are indispensable daily necessities in people's daily life, and sole is an important part of shoes. Sole in the prior art generally comprises big bottom and middle bottom, and the big bottom of shoes generally adopts the better rubber material of wear resistance, and for increasing the elasticity and comfort of shoes, the middle bottom of shoes generally adopts softer EVA material, In the process of using EVA to make the midsole, it is necessary to remove the burrs on the midsole. In this process, a large number of EVA waste heads will be generated. These EVA waste heads are basically strip structures with a diameter of 1-2cm, which are very scattered and small and cannot be used. The EVA waste heads are reprocessed into other products for use, and these EVA waste heads have also been vulcanized and cross-linked. The EVA waste heads can no longer be integrated and processed, and cannot be recycled. A large number of EVA waste heads that cannot be recycled will cause Serious environmental pollution and waste of resources. At present, in order to solve the environmental pollution and resource waste problems caused by EVA waste heads, the existing EVA waste heads are collected and recycled, and the EVA waste heads are ground into powder, which is used as a filler and added to the production of some EVA products. The powdered EVA waste head has lost its original elastic properties and other characteristics, and it is used as a filler only to reduce costs and to prepare some products with low price and low performance requirements. The EVA waste head has not really been fundamentally obtained. Effective utilization does not realize the effective utilization of resources in the true sense. Therefore, how to fully and effectively utilize the performance characteristics of the EVA waste head to achieve effective resource recycling and realize the real secondary recycling of the EVA waste head is the current issue. important issues that need to be addressed.

Contents of the invention

Therefore, in view of the above problems, the present invention proposes an EVA damping element that can effectively integrate the EVA waste head, effectively give full play to the performance characteristics of the EVA waste head, and realize the effective secondary recycling of the EVA waste head.

In order to achieve the above technical problems, the solution adopted by the present invention is: an EVA shock absorbing element, including an element body with a filling groove, the filling groove is filled with a gel medium, and EVA waste is distributed in the gel medium Head particles; the EVA waste head particles are obtained by chopping the EVA waste head particles, and the maximum radial dimension of the EVA waste head particles is less than the groove depth of the filling groove; the notch of the filling groove of the element body is also covered with a seal The sealing sheet makes the filling groove form a closed space.

Further, the element body and the sealing sheet are respectively an EVA element body and an EVA sealing sheet.

Further, the gel medium is silica gel.

A kind of sole with aforementioned EVA shock-absorbing element, comprises outsole and the midsole that is arranged on the outsole, the said middle end is provided with the mounting groove that said EVA shock-absorbing element is installed on the side that is in contact with the outsole, so The bottom of the mounting groove is provided with a window through the midsole, and the EVA shock absorbing element is provided with a protrusion capable of filling the window.

Further, the installation grooves on the midsole are arranged at the heel and the forefoot of the midsole.

Further, the midsole is an EVA midsole, and the outsole is a rubber outsole.

By adopting the aforementioned technical scheme, the beneficial effects of the present invention are: compared with the prior art, the EVA damping element designed as above and its manufacturing method and the sole with the damping element have the following advantages:

1. The dispersed EVA waste head particles use gel as the connection medium to realize the connection between the particles, realize the force transmission between the EVA waste head particles, and achieve the effect of turning parts into whole; at the same time, fill the groove and The sealing space formed by the sealing sheet will limit the deformation ability of the gel, which can prevent the gel from absorbing the received force for its own deformation when the gel is used as the force transmission medium, so as to realize the effectiveness of force transmission and seal The space also makes the gel have a fixed shape and structure, which improves the structural stability of the gel. Combined with the viscous resistance inside the gel, the EVA waste head particles distributed in the gel obtain a stable fixing force, and the assembly Even if the EVA waste head particles are subjected to external force, they can still maintain the original concentrated distribution state and will not be dispersed by force; therefore, when the foot exerts force on the EVA shock-absorbing element, the force can be effectively absorbed through the gel medium. The EVA waste head particles are transmitted to each EVA waste head particle contained in it, that is, the force is dispersed to each EVA waste head particle to bear, and each EVA waste head particle acts as a buffer and shock absorber for the force, making full use of EVA The EVA characteristic of the waste material enables the effective secondary recycling of the EVA waste material, and also reduces the production cost of the EVA damping element, achieving the combination of economic benefits and environmental benefits.

2. When the EVA damping element is arranged on the sole, the protrusion on the EVA damping element can directly contact the sole of the person's foot through the window in the midsole, and the sole of the foot will directly act on the protrusion of the EVA damping element on, that is, directly acts on the EVA damping element, and the EVA damping element can play a major role in shock absorption and buffering in the sole, reducing the burden on the midsole and the outsole; and the preferred EVA damping element is designed At the heel of the midsole and the forefoot, in the gait cycle, the force points of the soles on the sole are the heel and the metatarsal area respectively. The force application positions corresponding to these two force points are the heel and front of the midsole. Therefore, the position of the EVA shock-absorbing element is set according to the characteristics of the force exerted on the sole of the foot. The EVA shock-absorbing element can maximize the shock-absorbing and buffering effect and has strong practicability.

Description of drawings

Fig. 1 is an exploded view of the structure of the embodiment of the present invention.

Fig. 2 is a cross-sectional view at A-A in Fig. 1 .

Detailed ways

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 to Fig. 2, the embodiment of the present invention discloses that an EVA shock absorbing element 1 includes an EVA element body 11 having a filling groove, the filling groove is filled with a silica gel medium 12, and the silica gel EVA waste head particles 13 are distributed in the glue medium 12; the EVA waste head particles 13 are obtained by chopping the EVA waste head particles, and the maximum radial dimension of the EVA waste head particles 13 is less than the groove depth of the filling groove; the EVA element The notch of the filling groove of the main body 11 is also covered with an EVA sealing sheet 14, and the EVA sealing sheet 14 makes the filling groove form a closed space. The EVA shock-absorbing element 1 uses silica gel 12 as a medium to gather the dispersed EVA waste head particles 13 into an integrated structure, and the mutual force transmission can be realized between each EVA waste head particles 13, and then the EVA waste head particles can be exerted. 13 shock absorbing properties, realize the secondary recycling of EVA waste head 13, and have environmental protection effect.

A kind of sole with aforementioned EVA shock-absorbing element 1, comprises rubber outsole 2 and the EVA midsole 3 that is arranged on rubber outsole 2, said EVA midsole 3 contacts with rubber outsole 2 on the heel place The EVA shock absorbing element 1 and the forefoot are all provided with a mounting groove 31 for installing the EVA shock absorbing element 1, and the bottom of the mounting groove 31 is provided with a window 32 that runs through the EVA midsole 3, and the EVA shock absorbing element 1 is provided with Protrusion 15 capable of filling said opening 32 . The EVA damping element 1 is set at a reasonable position and the structural design is reasonable, so that the structural form of the EVA damping element 1 as the main damping component and the EVA midsole 3 as the secondary damping component is realized to improve the damping effect.

In summary, the EVA shock-absorbing element designed above and the sole with the shock-absorbing element can effectively integrate the EVA waste head, effectively give full play to the performance characteristics of the EVA waste head, and realize the effective secondary recycling of the EVA waste head , through the recycling of waste materials, the production cost of shock-absorbing elements and shoe soles is reduced, and the combination of economic benefits and environmental benefits is achieved.

The above records are only examples of using the technical content of this creation. Any modifications and changes made by those who are familiar with this technology using this creation belong to the scope of patents claimed by this creation, and are not limited to those disclosed in the examples.

Claims (6)

1. A kind of EVA shock-absorbing element, it is characterized in that: comprise the element body with filling groove, be filled with gel medium in the described filling groove, be distributed with EVA waste material head particle in the described gel medium; Described EVA waste material head The particles are obtained by chopping the EVA waste head, and the maximum radial dimension of the EVA waste head particles is smaller than the groove depth of the filling groove; the notch of the filling groove of the element body is also covered with a sealing sheet, and the sealing sheet makes the filling The groove constitutes a closed space. 2. The EVA shock absorbing element according to claim 1, characterized in that: the element body and the sealing sheet are respectively an EVA element body and an EVA sealing sheet. 3. The EVA shock absorbing element according to claim 1 or 2, characterized in that: the gel medium is silica gel. 4. A shoe sole with the arbitrary described EVA shock-absorbing element of claim 1-3, is characterized in that: comprise big bottom and be located at the middle bottom on the big bottom, on the side that described middle bottom contacts with big bottom There is a mounting groove for installing the EVA shock absorbing element, the bottom of the mounting groove is provided with a window through the middle bottom, and the EVA shock absorbing element is provided with a protrusion capable of filling the window. 5. The shoe sole according to claim 4, characterized in that: the installation grooves are provided at the heel and the forefoot of the midsole. 6. The sole according to claim 4 or 5, characterized in that: the midsole is an EVA midsole, and the outsole is a rubber outsole.