JPH07204A - Footwear and its preparation - Google Patents

Abstract

PURPOSE: To provide footgear which has waterproof performance and in which air is circulated and ventilated, and a manufacturing method thereof. CONSTITUTION: In footgear, particularly, work shoes and/or safety shoes which are manufactured by molding and have a large sole 2, the footgear and a manufacturing method therefor are characterized by having an air circulator 3 in the large sole 2. Therefore, the footgear on which air is circulated or ventilated in a periphery of a foot, particularly, a front part of the foot and water leakage is not caused, can be provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to shoes, boots, boots and similar footwear, and more particularly to watertight work shoes and / or safety shoes having a molded sole. The present invention particularly relates to footwear provided with an air circulation device and a method for manufacturing the same.

[0002]

BACKGROUND OF THE INVENTION Currently, especially in industry, many people wear the same footwear for eight hours or more at work. This results in spasms of cavernous swelling, skin diseases with or without parasites, and even exfoliation of the skin on the soles of the feet. At least for people who sweat a lot on their feet, it promotes a burning and cramping feeling.

As a means for solving the above problems, there has been proposed a method in which a plurality of through holes are provided at a predetermined position of the footwear, particularly in the front part of the footwear.

However, according to this solution, there is a drawback that air is not circulated, that air is not ventilated on the sole of the foot, and particularly, that it is not ventilated on the toes and the rear part of the toes. Further, it cannot be used as work shoes and / or safety shoes, and the situation of water leakage cannot be prevented.

[0005] Now, the above-mentioned type of footwear generally has a large sole formed directly on the main body of the footwear, and this large sole may further accelerate the medical condition and causes a significant discomfort. I was afraid.

[0006]

SUMMARY OF THE INVENTION The present invention aims at obviating the above-mentioned drawbacks. In particular, it is an object of the invention to provide footwear, in particular work shoes and / or safety shoes with a large sole produced by molding, with the sole having an air circulation device.

The present invention also provides a method of manufacturing the above-mentioned footwear, wherein first, the footwear body-insole assembly and the air circulation device are manufactured separately, and the air circulation device is manufactured. To the insole, optionally with a stiffener; setting the footwear body-insoles-air circulation device assembly into an injection mold; and then directly forming a large sole in the mold. Is injected into the footwear body and insole; and after the injected material is cured, the resulting footwear is removed from the mold.

The invention will be better understood from the description of the examples which follow. The examples do not limit the invention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As is apparent from FIG. 1, the footwear according to the invention comprises an air circulation device 3 provided in a large sole 2.

In work shoes or safety shoes type footwear, the large sole 2 (the visible outer sole of the footwear 1) can be constructed in a manner well known in the art, and the reinforcement 2 in the large sole. It is possible to include '(especially for the Cambrian type). In addition, the footwear body 1 is approximately the same as the front end portion of the footwear 1.
It is also possible to duplicate 3 and form a protective tip or bush (not shown).

According to the invention, the air circulation device 3 basically comprises an enclosed chamber 4 which is at least partially deformable, an intake pipe 5 with a check device part 7 of a check valve or a check valve, and footwear. 1 includes an exhaust pipe 6 which is deformable in the longitudinal direction.

The check device portion 7 such as the above-mentioned check valve or check valve can be, for example, a known sleeve type having a ball. The ball is movable by a compressed air flow through or about to pass through the sleeve into a closed position (corresponding to a check valve or valve rest position) and a position through which air can pass through the sleeve. (Fig. 1).

The closed chamber 4 has a semi-circular upper part 8 which is elastically deformable and is arranged in the heel 9 of the footwear 1.
The upper portion 8 is in contact with the insole 10 of the footwear 1.

The closed chamber 4 is preferably in the center of the area supporting the heel of the user. This is because a maximum pressure can be obtained and a large deformation can be received.

As shown in FIG. 1, the intake port 11 of the intake pipe 5 is connected to the area around the heel of the footwear user, preferably through a passage opening 12 attached to the insole 10 or the footwear body 13. , Preferably under the user's heel and in the rear part of this area.

In addition, the exhaust pipe 6 is the exhaust joint 1
4, the passage opening 1 attached to the insole 10
2'opens to the insole 10 where the user's forefoot or rib bone rests.

Therefore, the air circulation device 3 is designed to take in air from the heel area inside the footwear 1 and to exhaust it at the area supporting the toe part or the back part of the toe.

In addition, a part of the air taken in through the opening 11 of the intake pipe 5 is caused by the negative pressure generated by the intake action.
It is the outside air that has entered directly from the upper open end of the footwear body 13.

A series of intake-exhaust operations are controlled by the non-return device portion 7 which is changed by the pressure fluctuation applied to the semicircular upper portion 8 of the closed chamber 4 by the user.

When the user walks, the air circulation or ventilation generated by the air circulation device 3 becomes particularly large. Since the load of the entire foot is largely applied to the heel part, the pressure applied by the heel of the user to the upper part 8 is the same as that of the upper part 8.
This is because it causes a large displacement of. As a result, a series of actions of compression-expansion of the closed chamber 4 causes a pump action of intake near the heel and exhaust near the toe.

According to the present invention, as shown in FIGS. 1 and 2, the intake pipe 5, as well as the exhaust pipe 6 or optionally the joint 14 is fitted with a simple fixture 15, via passage openings 12, 12 '. It is fixed to the insole 10 by 16, 17.

According to a preferred embodiment of the present invention, each of the simple fasteners 15, 16, 17 is a push button type fitting or locking fastener, which is a modification of a commonly known clip. is there.

As shown in FIG. 2, each fitting or locking fixture has, for example, an annular piece 15 provided at the top of the insole 10 and at the passage openings 12, 12 '. The annular piece 15 has radial projections 16 on its inner circumference, and the projections 16 serve to narrow the inner circumference. On the other side of the annular piece 15, an intake pipe 5, an exhaust pipe 6 or a joint 1 optionally provided.
4 has a structure in which projections, shoulders 17 or continuous or discontinuous radial projections are formed on the outer end portion of 4.

According to another aspect of the present invention, footwear 1
In consideration of design or hygiene, the insole can be provided on the upper part of the insole 10 or. The insole or insole has a groove or a narrow groove which converges in the area of the passage openings 12, 12 'of the insole 10 for better air distribution or air guidance.

As shown in FIG. 1, the closed chamber 4 has an upper portion 8
Has at least one stop 18 on its top, said stop 8 connecting the air circulation device 3 to the insole 10. In addition, the upper portion 8 is elastically supported by a compression spring 19 provided inside the closed chamber 4.

Further, the closed chamber 4 can contain a solid substance for deodorization and / or a solid substance for dehumidification, which has a long-term effect.

The solid material can also be in the form of a perfume container containing chemicals for removing offensive odors, for example.

As a modification as described above, the closed chamber 4 may be a liquid substance for deodorizing an offensive odor of organic matter, and the liquid substance is under the pressure of the intake pipe 5, for example, in the intake pipe 5. It may be jetted by a special jetting device, such as a deformable tube with one end inserted in.

According to the invention, the outsole 2 can be a single cushion layer of a foamed polyurethane layer.

Further, according to the present invention, the large bottom 2 may be a foamed polyurethane layer having a plurality of cushion layers. In this case, it can be achieved by changing the density of the foamed polyurethane or by laminating different foamed polyurethane layers. When a plurality of cushion layers are provided, the cushion layer of the large sole 2, particularly the layer that contacts the ground, should have a higher density and greater rigidity than the inner layer or the layer that contacts the insole 10 or the footwear body 13. To do so.

The present invention also provides a method for manufacturing the above-mentioned footwear. First, the footwear body 13-
Manufacturing the assembly of the insole 10 and the air circulation device 3 separately, and providing the air circulation device 3 on the insole 10 optionally with a reinforcement 2 '; the footwear body 13-insole 1
0-setting the assembly of the air circulation device 3 in an injection mold; then directly injecting the material forming the large sole 2 into the mold directly into the footwear body 13 and the insole 10; Removing the obtained footwear from the mold after the substance is cured.

According to the invention, the air circulation device 3 can be manufactured in a single step, basically by injection molding the side wall of the closed chamber 4 of the air circulation device 3 with the intake pipe 5 and the upper part 8. Next, a check device 7 such as a check valve or a check valve is attached to the intake pipe 5, and a part of the exhaust pipe 6 is inserted into a hole previously provided in the closed chamber 4 and then fixed by adhering. To do. The exhaust pipe 6 has a length adapted to the size of the footwear 1, and a joint 14 can be provided at its free end.

The exhaust pipe 6 is, as one aspect thereof, a filter-like dust remover for diffusing air jetted from the closed chamber 4 through the insole 10 having a plurality of passage openings 12 'and removing dust. It is also possible to have means.

According to the invention, the insole 1 of the air circulation device 3
The mounting at 0 is carried out by pushing the free ends of the intake pipe 5 and the exhaust pipe 6, and possibly the joint 14, into the corresponding passage openings 12 and 12 ', respectively. This allows each fixture 15,16,17
Are fitted or locked by and fixed. The air circulation device 3 has a closed chamber 4 and / or an exhaust pipe 6 with respect to the insole 10.
Positioned by one or more stops 18 provided on the top of the. That is, the air circulation device 3 is attached to the insole 10 by pushing the stoppers 18 into one or a plurality of holes indicated by the reference numeral 20 provided in the insole 10.

The present invention is not limited to the above embodiments and the accompanying drawings. That is, it is apparent that the present invention can be replaced by equivalent techniques and different members can be used without departing from the technical scope.

[0036]

As described above, according to the present invention,
Especially in work shoes and / or safety shoes with a large sole,
Circulates or ventilates air around the foot, especially around the front of the foot,
Moreover, there is an advantage that footwear without water leakage can be provided. Since air is supplied to the inside of the footwear which is waterproof, the comfort of the user is remarkably improved and the twitch of the foot is remarkably prevented. In addition, the simple fixture and the air circulation device positioning means (stopper) have an advantage that a large bottom having an air circulation device can be easily molded by a large bottom molding die.

[Brief description of drawings]

FIG. 1 is a partial side sectional view of footwear of a position embodiment according to the present invention.

FIG. 2 is a sectional view of the fitting and fixing means shown in FIG.

[Explanation of symbols]

 1 Footwear 2 Large sole 3 Air circulation device 4 Closed chamber 5 Intake pipe 6 Exhaust pipe 7 Check valve device 8 Upper part 10 Insole 12 Passage opening 12 'Passage opening 13 Footwear body 14 Joint 15 Simple fixture 16 Simple fixture 17 Simple fixture 18 Stopper 19 Compression spring

Claims (14)

[Claims] 1. Footwear, in particular work shoes and / or safety shoes with a large sole produced by molding,
Footwear having an air circulation device 3 in the large sole 2. 2. The air circulation device 3 basically comprises a closed chamber 4 which is at least partially deformable, an intake pipe 5 having a check device portion 7 and an exhaust pipe which is deformable in the longitudinal direction of the footwear 1. 6
The footwear according to claim 1, comprising: 3. The closed chamber 4 has a semi-circular upper part 8 which is elastically deformable and is arranged and folded in a heel 9 of the footwear 1, the upper part 8 being an insole of the footwear 1. The footwear according to claim 2, which is in contact with the insole 10. 4. The intake port 11 of the intake pipe 5 includes an insole 10
Alternatively, the footwear according to claim 2 or 3, wherein the footwear is opened inside the area around the heel of the user through an opening of the passage 12 attached to the footwear body 13. 5. The exhaust pipe 6 has a passage opening 1 attached to the insole 10 through a discharge joint 14 optionally.
2. An opening through the 2'to the region of the insole 10 where the user's foot or rib bone rests.
Footwear described in 4. 6. The intake pipe 5, as well as the exhaust pipe 6 or optionally a joint 14, is provided with passage openings 12, 12 '.
The insole 10 via the simple fixing tools 15, 16 and 17 via the
The footwear according to claim 2, wherein the footwear is fixed to the footwear. 7. The footwear according to claim 6, wherein the simple fasteners 15, 16 and 17 are fitting or locking type fasteners. 8. An insole or an insole may be provided on an upper portion of the insole 10, and the insole or the insole may be the insole 10.
8. A groove or a narrow groove converging in the passage opening 12, 12 'area of the above, wherein the groove or the narrow groove serves as an air distributing or air guiding means. Footwear. 9. The closed chamber 4 has at least one stop 18 at the top of the upper part 8 which connects the air circulation device 3 to the insole 10 and, in addition, at the top. The part 8 is elastically supported by a compression spring 19 provided inside the closed chamber 4.
~ Footwear as described in any one of 8 above. 10. The footwear according to claim 1, wherein the large sole 2 is composed of a polyurethane foam layer which is a single cushion layer. 11. The foamed polyurethane according to claim 1, wherein the large bottom 2 is a foamed polyurethane having a plurality of cushion layers in which foamed polyurethane layers having different or different foamed polyurethane densities are laminated. Footwear. 12. A footwear body-manufacturing an insole assembly and an air circulation device separately, and providing the air circulation device on the insole optionally with a reinforcing material; the footwear body-
Setting the insole-air circulation device assembly in an injection mold; then injecting a material that forms a large sole into the mold directly into the footwear body and insole; the injected material cures And a step of taking out the obtained footwear from the mold, the method for producing footwear. 13. The step of manufacturing the air circulation device 3 is basically a step of manufacturing the side wall having the intake pipe 5 of the closed chamber 4 of the air circulation device 3 and the upper portion 8 by injection molding.
Next, the check valve device 7 is attached to the intake pipe 5, the hole provided in the closed chamber 4 has a length adapted to the size of the footwear 1, and the joint 14 is provided at its free end. 13. The method for manufacturing footwear according to claim 12, further comprising the step of: inserting a part of the exhaust pipe 6 that can be provided, and then attaching and fixing. 14. Attachment of said air circulation device 3 to the insole 10 corresponds to respective passage openings 12 and 12 '.
Until the air circulation device 3 is fixed to the insole 10 to the closed chamber 4 and / or the exhaust pipe 6 until it is fixed by fitting or locking by the fixtures 15, 16 and 17. Or by pushing the free ends of said intake pipe 5 and exhaust pipe 6, and optionally joint 14, until they are positioned by pushing a plurality of stops 18 into one or more holes 20 provided in the insole 10. The method for manufacturing footwear according to claim 12 or 13, which is performed.