SWIM FIN

Abstract

The present invention discloses a swim fin, including an outsole, a middle sole and a shoe upper sequentially provided from bottom to top; wherein the shape and size of the outsole match the shape and size of a human foot, the outsole is a rubber outsole made of a rubber; the middle sole includes a support part matching the shape and size of the outsole, and a webbed paddling part extending outward along a peripheral of a sole part of the support part; the middle sole is a polyurethane middle sole made of polyurethane; the shoe upper is formed by sewing diving suit fabric; and the middle sole is integrally formed by an upper-containing injection moulding process using the polyurethane, the middle sole is respectively connected to the shoe upper and the outsole during the integral forming process of the upper-containing injection moulding process.

Claims

1. A swim fin, comprising: an outsole, a middle sole and a shoe upper which are fixedly connected sequentially from bottom to top, wherein a shape and size of said outsole match a shape and size of a human foot, said outsole is a rubber outsole made of a rubber; said middle sole comprises a support part matching the shape and size of the outsole, and a webbed paddling part extending outward along a peripheral of a sole part of the support part; said middle sole is integrally formed from polyurethane by polyurethane injection moulding; said shoe upper is formed by sewing diving suit fabric; and an accommodation cavity for accommodating a whole human foot is formed between the support part of said middle sole and the shoe upper.

2. The swim fin according to claim 1, wherein said middle sole is integrally formed by an upper-containing injection moulding process using polyurethane, and said middle sole is respectively integrally connected to the shoe upper and the outsole during an integral forming process of the upper-containing injection moulding process.

3. The swim fin according to claim 1, wherein said middle sole further comprises an arched extending part which is provided with an opening and is arched upward along a top face of the support part; a first accommodation cavity for accommodating a toe is formed between an inner wall of said arched extending part and the support part located directly below the arched extending part; an opening edge of said arched extending part and an edge of the support part enclose a first connection part; said shoe upper comprises a second connection part for wrapping a sole and a heel and a third connection part for wrapping an ankle; said second connection part matches the first connection part of the middle sole; said second connection part is fixedly connected to the first connection part so as to form a second accommodation cavity for accommodating the sole and the heel; and after said second accommodation cavity and said first accommodation cavity are enclosed, an accommodation cavity for accommodating the whole human foot is formed.

4. The swim fin according to claim 1, wherein a plurality of protrusions are provided on a bottom face of said outsole.

5. The swim fin according to claim 1, wherein a plurality of grooves are provided at air edge of the bottom face of said outsole.

6. The swim fin according to claim 1, wherein air elastic band is further provided on an outer surface of said shoe upper.

7. The swim fin according to claim 3, wherein a zipper is provided on a side of the third connection part of said shoe upper.

8. The swim fin according to claim 3, wherein a lifting ring is provided on a back face of the third connection part of said shoe upper.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is perspective view of the present invention.

[0024] FIG. 2 is a schematic structural side view of the present invention..

[0025] FIG. 3 is a schematic structural bottom view of the present invention.

[0026] 1. outsole;

[0027] 11. protrusion;

[0028] 12. groove;

[0029] 2. middle sole;

[0030] 21. support part;

[0031] 22. paddling part;

[0032] 23, arched extending part;

[0033] 231. opening;

[0034] 24. first connection part;

[0035] 3. shoe upper;

[0036] 31. second connection part;

[0037] 32. third connection part;

[0038] 4. elastic band;

[0039] 5. zipper;

[0040] 6. lifting ring.

DETAILED DESCRIPTION OF THE INVENTION

[0041] The present invention will be further described below in conjunction with the drawings and the particular embodiments.

Embodiment 1

[0042] With reference to FIGS. 1-3, a swim fin according to the present embodiment comprises an outsole 1, a middle sole 2 and a shoe upper 3 sequentially provided from bottom to top;

[0043] the shape and size of said outsole 1 match the shape and size of a human foot, and said outsole 1 is a rubber outsole made of a rubber;

[0044] said middle sole 2 comprises a support part 21 matching the shape and size of the outsole 1, a webbed paddling part 22 extending outward along a peripheral of a sole part of the support part 21; said middle sole 2 is a polyurethane middle sole made of polyurethane; said middle sole 2 further comprises an arched extending part 23 which is provided with an opening 231 and is arched upward along a top face of the support part 21; a first accommodation cavity for accommodating a toe is formed between an inner wall of said arched extending part 23 and the support part 21 located directly below the arched extending part 23; and an edge of the opening 231 of said arched extending part 23 and an edge of the support part 21 enclose a first connection part 24;

[0045] said shoe upper 3 is formed by sewing diving suit fabric; said shoe upper 3 comprises a second connection part 31 for wrapping a sole and a heel and a third connection part 32 for wrapping an ankle, said second connection part 31 matches the first connection part 24 of the middle sole 2; said second connection part 31 is fixedly connected to the first connection part 24 so as to form a second accommodation cavity for accommodating the sole and the heel; and after said second accommodation cavity and said first accommodation cavity are enclosed, an accommodation cavity for accommodating the whole human foot is formed.

[0046] Said middle sole 2 is integrally formed by an upper-containing injection moulding process using polyurethane, and said middle sole 2 is respectively integrally connected to the shoe upper 3 and the outsole 1 during the upper-containing injection moulding process.

[0047] Protrusions 11 are provided on a bottom face of said outsole 1. Such a design can improve skid resistance of the outsole 1.

[0048] Grooves 12 are provided at an edge of the bottom face of said outsole 1. Such a design can further improve skid resistance of the outsole 1.

[0049] An elastic band 4 is further provided on an outer surface of said shoe upper 3. Such a design can adjust the tightness of shoe upper according to actual personal conditions so that the swim fin is more comfortable to wear.

[0050] A zipper 5 is provided on a side of the third connection part 32 of said shoe upper 3. Such a design can facilitate putting on and taking off of the swim fin, making it more convenient to use.

[0051] A lifting ring 6 is provided on a back face of the third connection part 32 of said shoe upper 3. Such a design is convenient to carry.

[0052] For a person skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all of these changes and modifications should fall within the scope of the claims of the present invention.