JPH0644884B2 - Ventilated shoes and manufacturing method thereof - Google Patents

Description

TECHNICAL FIELD The present invention relates to a breathable shoe which has excellent breathability and is comfortable to wear, and a method for producing the same.

(B) Conventional technology In conventional footwear, the shoe sole consists of an outer sole and an inner sole, of which the outer sole is made of a material having poor air permeability, such as rubber or plastic. Moreover, due to sweating from the feet, the inside of the shoe is in a high humidity state, causing foot stuffiness, which causes discomfort to the wearer and deteriorates the wearing comfort. For this reason, conventionally, for example, a shoe sole has been used in which a middle brim portion having a plurality of ventilation holes is provided near the stepped portion of the inner sole, and a breathable elastic body is fitted to the middle brim portion. Moisture due to sweat generated in the shoe during wearing is absorbed by the breathable elasticity fitted on the upper surface of the outsole from the ventilation hole formed in the insole, and the pressing force generated by the weight when touching the ground. Thus, the ventilation holes provided on the side surface of the outer sole allow the air to be discharged to the outside so as to eliminate stuffiness in the shoe and improve the wearing comfort.

However, the ventilation hole provided on the outer side surface is crushed and shielded by the pressing force of the weight at the time of grounding, and it is extremely difficult to discharge the moisture in the shoe.
Moreover, since the shoe is completed by adhering the preformed shoe sole to the instep, it is necessary to perform manual work such as applying an adhesive, and the adhesive blocks the vent hole, making ventilation difficult. It had a defect such as

(C) Problems to be Solved by the Invention In the present invention, a shoe cover having a padded insole that ventilates on the front and back and a shank block having an empty space on the lower surface of the heel portion of the shoe cover are fixed to the shoe sole. A ventilated shoe integrally formed and a method for manufacturing the same, wherein the through hole provided in the front wall of the heel portion and the through hole of the shank block and the insole are communicated with each other to obtain a moist air inside the shoe. It is characterized by being able to maintain a comfortable state by constantly discharging the fresh air and sucking the fresh air outside.

(D) Means for Solving the Problem The present invention relates to a ventilated shoe in which the shoe sole (1) and the shoe sole (2) are integrally molded. Good pad
(4) is inserted, and a plurality of through holes are provided on the toe side upper surface of the insole (3).
(5) is drilled, and at least one through hole (6) is formed on the lower surface of the heel side.
Cap-shaped shank block (7)
Is a main body (1) with a lid (19) having a collar (17) and an empty chamber (8).
8) are buried in the aft part and the heel part respectively, and the lid (1
The through hole (9) formed in the rear of 9) and the through hole (10) formed in the front wall of the empty room (8) are the through hole (6) and the heel of the sole (2), respectively. A ventilated shoe configured to communicate with a through hole (11) formed in a front wall of the part.

Further, according to the present invention, a pad (4) having good air permeability is inserted into the insole (3), and a plurality of through holes (5) are formed on the toe side upper surface of the insole (3) so that the heel side A last mold (12) fitted with a cover (1) having at least one through hole (6) on the lower surface;
First, in the space portion (15) formed by the side mold (13) and the sole mold (14) in which the protrusion (16) is projected on the part of the shoe sole (2) adjacent to the front wall of the heel, the cap is first formed. -Shaped shank block (7), with its collar (17) on the stepped side of the insole (3),
The main body (18) having the empty room (8) has a through hole (9) and a through hole (6) in the lid (19).
It is fixed to the heel part of the insole (3) so that it can communicate with, and then the bottom material such as thermoplastic resin foam or polyurethane foam is injected or injection-filled, and the heel part of the shoe sole (2) after demolding. Protrusion on front wall
A ventilated shoe characterized by comprising through holes (10), (11) communicating with the empty chamber (8) of the shank block (7) starting from the recess formed by (16). It is a manufacturing method.

(E) Embodiment FIG. 1 shows an embodiment of the present invention, which is a longitudinal section showing a state in which a bottom material is injected and filled in a space (15) formed by a mold assembly of each mold. It is a side view.

The jacket (1) is sewn in a bag, and the insole (3) has a plurality of through holes (5) on the upper surface of the toe side and at least one through hole on the lower surface of the heel side. (6) is bored, and a pad (4) with good air permeability is inserted inside. On the lower surface of the insole (3), a waterproof film-processed non-woven insole bottom fabric (23) is used to prevent water from directly permeating the pad (4).

The pad (4) is made of polyamide fiber fabric (Daiyu Co., Ltd.).
Made, product name “Florian”, thickness 3 mm to 5 mm) or, if necessary, a laminate with an open-cell sponge such as polyurethane or rubber is used.

The shank block (7) is made of plastic in the shape of a cap, and its brim (17) portion is extended to the stepped side of the insole (3), and the main body (18) of the shoe sole (2). The vacant chamber (8) embedded in the heel part and provided in the main body (18) is open to the lower surface of the heel part of the insole (3), and the opening part is covered with the lid (19). .

A rib (20) is formed in the vacant chamber (8), and a protrusion provided on the lower portion of the lid (19) and a hole provided in the rib (20) are engaged with each other, so that the lid (19) is securely attached. It is held by the shank block (7), and the notches (21) formed in the ribs (20) allow the front and rear chambers (8) to communicate with each other, and a through hole (9) formed in the rear part of the lid (19). )
Thus, the through hole (6) in the inner bottom (3) and the vacant chamber (8) communicate with each other.
Engagement between the lid (19) and the main body (18) is more reliably sealed by forming a pair of closed fitting grooves at each engaging outer peripheral edge. A through hole (10) is formed in the front wall of the main body (18) so as to face upward toward the void (8), and the rib (2) is formed in the void (8).
It is divided by 0) so that water does not move directly. Furthermore, a slanted wall (22) is provided in the front bottom of the empty room (8) to prevent water from accumulating, so that when flowing out from the through hole (10) it will not flow out smoothly and stick to the corners. Is configured. A protrusion (16) is provided so as to face the space portion (15) of the sole mold (14) at a portion adjacent to the front wall of the heel portion of the shoe sole (2). This protrusion (16) has a diameter of 2 to 4 mm and a length of 1
It may be about 3 mm, and in this embodiment, the diameter is 3 mm and the length is 1.5 m.
It was m.

The manufacturing process of a ventilated shoe using the above materials will be described below. First, the sewn bag cover (1) is fitted into the last mold (12), and the through hole (6) and the lid (19) are provided on the heel-side lower surface of the insole (1) insole (3).
Secure the shank block (7) so that it matches the through hole (9).

Next, in the space (15) formed by the last mold (12), the side mold (13) and the sole mold (14), a bottom material of polyurethane foam or thermoplastic resin foam is injected, Wait for the foam to fill and cure, then put on the sole (1) of the shoe sole.
(2) Remove the shoe that is integrally molded. In this case, since the protrusion (16) of the sole mold (14) is small and the shoe sole (2) is elastic, it can be removed from the mold without attaching it.

A hole is formed by the protrusion (16) on the front wall of the heel part of the shoe sole (2) after demolding.
The through holes (11) and (10) are bored upward toward the (8). By forming the through holes (11) and (10), the vacant chamber (8) and the through hole
The shoes (9), (6), the well-ventilated pad (4), and the through hole (5) are communicated with each other, so that the inside of the shoe is communicated with the outside air.

(F) Effect of the Invention The present invention is a ventilated shoe in which a shoe shank having an empty chamber is fixed to the lower surface of the heel portion of a heel cover having a padded insole that ventilates on the front and back, and the shoe sole is integrally formed, A through hole (1) is formed in the front wall of the sole of the shoe through the upper surface of the insole and the pad (4), the lower surface of the heel of the insole, and the empty space of the shank block.
Since the parts up to 1) are communicated with each other, the inside of the shoe is well ventilated with the outside air, and the through hole (6) is created by pressing on the heel of the insole of the wearer.
The outside fresh air taken in through the through hole in the front wall of the sole of the shoe through the vacant space into the heel of the insole is sent to the toe, and then as the pressing force moves to the toe of the insole. ,
Fresh air inside the insole can be sent to the inside of the shoe from the through hole on the toe side of the insole via the pad, and the air pressure inside the shoe can always be forcibly increased and the air can be made to flow. Moisture inside the shoe can be discharged from the mouth.

In addition, even if water enters the vacant chamber, it does not reach the insole directly by being blocked by the ribs, etc., and the sloping wall is provided at the front bottom of the vacant chamber. It can be easily drained from the through hole in the front wall of the.

Further, in manufacturing the breathable shoe of the present invention, after the simple operation of fixing the shank block to the lower surface of the midsole of the shoe, the shoe sole material is cast or injected into the space formed by each mold. Since the shoe sole is integrally molded with the armor cover, the shoe sole can be extremely easily molded integrally with the armor cover without being affected by the shape of the shank block, and the shank block can withstand pressing force. Since it is molded into
The outside air can be smoothly flowed in without the through-holes being blocked, and the shoe sole is integrally molded by casting or injection, so the adhesion between the shoe cover and the shoe sole is reliable and There is no water leakage between the shoe and the sole.

In addition, since the entrance of the through hole is formed by the projection of the bottom mold and the through hole is formed from this entrance as a starting point, the shape of the entrance of the through hole is not damaged. You can

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a vertical cross-sectional view of each mold after assembly, and FIG. 2 is a vertical cross-sectional view of a shank block. 1 …… coat, 2 …… shoe sole, 3 …… midsole, 4 …… pad,
5,6 ... Through hole, 7 ... Shank block, 8 ... Vacancy,
9,10 …… Through hole, 11 …… Through hole, 12 …… Last mold, 13
…… Side mold, 14 …… Sole mold, 15 …… Space part, 16 …… Projection, 17 …… Bowl, 18 …… Main body, 19 …… Lid,
20 …… rib, 21 …… notch, 22 …… sloping wall, 23 …… bottom cloth for insole.

Claims (3)

[Claims] 1. A ventilated shoe having a shoe sole (1) integrally formed with a shoe sole (2), wherein a pad (4) having good air permeability is inserted into the midsole (3) of the sole. A plurality of through holes (5) are formed on the upper surface of the insole (3) on the toe side, and at least one through hole is formed on the lower surface of the heel side.
(6) is drilled, cap-shaped shank block
(7) is a main body with a lid (19) having a collar (17) and an empty chamber (8)
(18) are buried in the stepped part and the heel part respectively, and the lid
The through hole (9) formed behind the (19) and the through hole (10) formed in the front wall of the vacant chamber (8) are the through hole (6) and the sole (2), respectively.
A ventilated shoe constructed so as to communicate with the through hole (11) formed in the front wall of the heel part. 2. The ventilated shoe according to claim 1, wherein the through holes (10), (11) communicating with each other are formed upward from the front wall of the heel toward the empty chamber (8). 3. A pad (4) having good air permeability is inserted into the insole (3), and a plurality of through holes (5) are formed in the upper surface of the insole (3) on the toe side, and the heel side is formed. A last mold (12) fitted with a cover (1) having at least one through hole (6) formed on the lower surface, and a side mold (13) and a front wall of the heel of the sole (2). First, the cap-shaped shank block (7) has its collar (17) inside the space (15) formed by the sole mold (14) in which the protrusion (16) is formed adjacent to The main body (18) having the vacant chamber (8) is connected to the through hole (9) of the lid (19) and the through hole (6) so that the through hole (6) communicates with the stepped side of the bottom (3). It is fixed to the heel part, and then the bottom material such as thermoplastic resin foam or polyurethane foam is injected or injected to fill the protrusion (1) on the front wall of the heel part of the shoe sole (2) after demolding.
A method for manufacturing a ventilated shoe, characterized in that the through hole (10) (11) communicating with the empty chamber (8) of the shank block (7) is bored from the recess formed by 6) as a starting point. .