CN204763657U - A kind of injection molded shoe midsole with soft front and hard back - Google Patents

Abstract

An injection molded shoe midsole with a soft front and hard back comprises a bending portion that bends during use and a front portion and a rear portion separated by the bending portion in the front-to-back direction, a groove is provided at the position of the front portion and the bending portion, and a soft plastic body is provided in the groove. The utility model has a novel design and a simple and reasonable structure, so that the entire shoe midsole has the characteristics of being comfortable to wear and having sufficient support strength to maintain the shoe shape and ensure the support strength.

Description

A kind of injection molded shoe midsole with soft front and hard back

technical field

The utility model relates to a shoe material, in particular to a shoe midsole obtained by injection molding.

Background technique

An existing shoe midsole obtained by injection molding has been more and more accepted and recognized by shoe manufacturers because of its high degree of standardization. The midsole of this injection-molded shoe adopts one-time injection molding, and the hardness of each part of the midsole of the shoe is consistent, and the wearing comfort needs to be improved. For example, in general shoe midsoles, the bending part that bends during running needs relatively low hardness; in the front part of the shoe midsole, especially the front part of the midsole of women's high-heeled shoes, it needs to have a certain degree of softness. To make the forefoot of the wearer's foot more comfortable; while at the back of the midsole of the shoe, especially the rear of the midsole of women's high-heeled shoes, higher hardness is often required to maintain the shape of the shoe and provide sufficient support.

Therefore, it is urgent to develop a kind of injection molded shoe mid-sole which is soft at the front and hard at the back.

Contents of the invention

The technical problem to be solved by the utility model is to provide an injection molded shoe midsole that is comfortable to wear and has sufficient strength.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a midsole of injection molded shoes with soft front and hard rear, including the bending part that bends during running and the front part that is separated by the bending part in the front and rear direction and the rear part, a groove is arranged at the position of the front part and the bending part, and a soft plastic body is arranged in the groove.

Further, the groove is formed by the top surface of the midsole facing downward or the bottom surface facing upward.

Still further, the depth of the groove is 2/5 to 4/5 of the thickness of the bending part and the front part of the midsole of the shoe. Preferably, the depth of the groove is 3/5 of the thickness of the bending part and the front part of the midsole of the shoe.

Furthermore, the thinnest part of the side wall formed by the inner side wall of the groove and the outer side of the midsole is located at the bending part. The thickness of the thinnest part of the side wall is 3 mm to 7 mm. Preferably, the thickness of the thinnest part of the side wall is 5.5 mm.

The utility model adopts the method of filling the soft plastic body through grooves in the bending part and the front part of the midsole of the shoe, so that the whole midsole of the shoe is soft at the front part and has the characteristics of comfortable wearing; the whole midsole of the shoe is at the rear part It is hard and can provide enough strength to maintain the shape of the shoe and have high support.

The design of the groove position, depth and thickness of the side wall of the utility model is the best solution obtained after comprehensively considering the big data of Asian foot shape, comfort level, anti-deformation strength, manufacturing difficulty, cost control, etc. , while considering comfort, it is also guaranteed that the soft front part and hard rear part will not be deformed due to continuous bending during long-term use.

The utility model has a novel design and a simple and reasonable structure, so that the entire midsole of the shoe not only has the characteristics of comfortable wearing, but also has sufficient supporting strength to maintain the shape of the shoe and ensure the supporting force.

Description of drawings

Fig. 1 is a structural representation of the utility model.

The labels in the figure are respectively: (1) bending part, (2) front part, (3) rear part, (4) groove, (5) soft plastic body, (6) side wall.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1, the utility model is a midsole of an injection molded shoe with a soft front and a hard back, which includes a bending part 1 that bends during travel and a front part 2 and a rear part 3 that are separated by the bending part 1 in the front-rear direction. Located at the position of the front part 2 and the bending part 1, a groove 4 is arranged downward on the top surface of the midsole of the shoe, and the groove 4 is filled with a soft plastic body 5. The depth of the groove 4 is 5.4 mm, the thickness of the bending part 1 and the front part 2 of the shoe midsole is 9 mm, and the depth of the groove 4 is 3/5 of the thickness of the bending part 1 and the front part 2; The thinnest part of the side wall 6 formed by the inner side wall of the groove 4 and the outer side of the midsole is located at the bending part 1, and the thickness of the thinnest part of the side wall 6 is 5.5 mm.

The utility model first uses the polypropylene plastic raw material with higher hardness to injection mold the midsole of the shoe with the groove 4, and then uses the polypropylene plastic raw material with lower hardness and soft performance to fill the sole through secondary injection molding. Groove 4, the finished product of the injection molded shoe midsole after cooling and molding has the characteristics of being soft at the front and hard at the back.

Claims (7)

1. the end in a front soft rear hard injection moulded shoes, comprising advance use in occur bend kink and fore-and-aft direction be bent part every front and rear, it is characterized in that: be provided with a groove in the position of described front portion, kink, in this groove, be provided with soft plastic body.

2. the end in front soft rear hard injection moulded shoes according to claim 1, it is characterized in that: described groove by the end in footwear end face downwards or bottom surface upwards formed.

3. the end in front soft rear hard injection moulded shoes according to claim 2, it is characterized in that: the degree of depth of described groove is end kink in footwear, 2/5 to 4/5 of thickness is located in front portion.

4. the end in front soft rear hard injection moulded shoes according to claim 3, it is characterized in that: the degree of depth of described groove is end kink in footwear, 3/5 of thickness is located in front portion.

5. the end in front soft rear hard injection moulded shoes according to claim 2, it is characterized in that: in the madial wall of described groove and footwear, the thinnest part of the abutment wall that the lateral surface at the end is formed is positioned at described kink.

6. the end in front soft rear hard injection moulded shoes according to claim 5, it is characterized in that: the thickness of described abutment wall thinnest part is 3 millimeters to 7 millimeters.

7. the end in front soft rear hard injection moulded shoes according to claim 6, it is characterized in that: the thickness of described abutment wall thinnest part is 5.5 millimeters.