JPWO2021112683A5

JPWO2021112683A5 -

Info

Publication number: JPWO2021112683A5
Application number: JP2022534379A
Authority: JP
Publication date: 2023-11-14

Claims

A shoe (1) having a sole that provides dynamic plantar arch support,
Comprising a rubber outsole (9), an upper (10), and a midsole (2),
The midsole is
・Hard elastic material (4);
・ Soft elastic material (5);
Equipped with
The hard elastic material has an elastic hardness in a range of 1.3 to 3 times that of the soft elastic material,
the hard elastic material is arranged like a band (3) inside the periphery of the midsole;
The band is preferably wider on the inner side (M) than on the outer side (L) in the heel region of the midsole,
the soft elastic material (5) is arranged within the midsole inside the band of hard elastic material;
It further comprises a support structure (8) arranged below the soft elastic material in the direction from the inside to the outside, the support structure being suitable for a typical user with a foot that matches the size of the shoe. It is located 4 cm forward from the vertical direction below the center of the accessory bone,
the support structure has a higher elastic hardness than the hard elastic material;
When the shoe is standing on a horizontal surface, the inner side has a larger vertical dimension than the outer side,
This allows the support force to be increased below the inner side of the plantar arch than on the outer side of the plantar arch.
shoes.

the support structure (8) is arranged within the rubber outsole (9);
Shoes according to claim 1.

The support structure (8) is arranged within the rubber outsole, or between the rubber outsole and the midsole, or within the midsole, and a further support structure (8) is arranged within the midsole. be placed,
Shoes according to claim 1.

said further support structure comprises a shank (6), said shank being embedded in said soft elastic material from the heel to the forefoot of said midsole;
Shoes according to any one of claims 1 to 3.

The shank (6) extends over 60% to 95% of the last length and 60% to 95% of the last width,
The shank is twisted clockwise in the case of the midsole of the right foot viewed from behind, at an intermediate portion from the heel to a position in front of the user's navicular bone;
The twist angle α2 is in the range of 1° to 10° from the horizontal line,
The shank is preferably formed from polyamide, and the thickness of the shank without ribs is preferably between 0.5 mm and 3 mm.
Shoes according to claim 4.

The hard elastic material includes polyurethane (PU) having a Shore A hardness of 40 to 80, and the soft elastic material includes polyurethane (PU) having a Shore A hardness of 20 to 60.
Shoes according to any one of claims 1 to 5.

At least a portion of the upper surface of the midsole is sloped;
In the midsole, at a position in front of the user's navicular bone from the heel and the middle portion, the inner side is higher than the outer side, and the angle α1 of the inclination is between 1° and 7° from the horizontal line. is the range,
Shoes according to any one of claims 1 to 6.

The α2≧α1,
Shoes according to claim 5 or 7.

the thickness of the soft elastic material above the support structure in the midfoot region of the midsole is less than the thickness of the soft elastic material above the support structure in the heel region of the midsole;
Shoes according to any one of claims 1 to 8.

The shoes are highly practical for diabetic patients and have the following features in any combination:
- The lateral dimension of the shoe is increased by 2%, 5%, 10% or 15% or more in the direction from the inside to the outside of the shoe;
- The vertical dimension between the sole and the upper of the shoe is increased by 2%, 5%, 10% or 15% or more;
- Preferably, in a region below the ball of the first toe (the hallux) of a user whose foot matches the size of the shoe, and below the center point of the ball of the first toe of the user; and by reducing the elastic stiffness and/or elevation or height or thickness of the sole in an area of at least 0.5 cm around the central point, compared to surrounding areas. comprising a structural modification that reduces contact pressure on tissue below the ball of the first toe; and/or by reducing the elevation or height or thickness of the sole below and around the center point of the user's heel bone. comprising a structural modification that reduces contact pressure against the underlying tissue of the heel bone in an area of at least 1 cm;
having one or more of
Shoes according to any one of claims 1 to 9.

At least the heel portion of the sole is thicker than that of a walking shoe;
the shoes are running shoes;
Shoes according to any one of claims 1 to 9.

The band preferably extends inwardly from the periphery along the sides and heel of the midsole in a range of 0.1 to 1 times the thickness of the midsole.
Shoes according to any one of claims 1 to 11.