JP2761618B2 - Footwear and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an article of footwear as well as to a method for making such an article of footwear. Article of footwear, particularly a work and/or safety shoe, including a wear sole obtained by moulding, characterised in that it is provided with a device (3) for air circulation which is incorporated into the mass of the wear sole (2). <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to shoes, boots, semi-boots and similar footwear, in particular non-leakable work shoes and / or safety shoes having a molded sole. The present invention particularly relates to footwear having an air circulation device and a method of manufacturing the same.

[0002]

BACKGROUND OF THE INVENTION At present, especially in industry, many people wear the same footwear for eight hours or more during work. This results in the spasticity of the spongiform swelling, the parasitic or non-parasitic skin disease, and furthermore the exfoliation of the sole skin. At least, especially for those who sweat a lot on their feet, they promote a burning and cramping sensation.

[0003] As means for solving the above problems, there has been proposed a method in which a plurality of through holes are provided at a predetermined portion of footwear, particularly at a front portion of the footwear.

[0004] However, according to this solution, there are disadvantages that air does not circulate, air is not ventilated to the soles, and especially toes and the rear part of the toes are not ventilated. In addition, it cannot be used as work shoes and / or safety shoes, and cannot prevent a situation where water leaks.

The above-mentioned type of footwear generally has a large sole directly formed on the footwear main body, and this large sole may further exacerbate the medical condition and cause a significant discomfort. There was fear.

[0006]

SUMMARY OF THE INVENTION The present invention aims at obviating the above-mentioned disadvantages. In particular, in footwear, especially work shoes and / or safety shoes having a sole with an air circulation device 3 manufactured by molding, said air circulation device 3 is provided in the sole 2, A sealed chamber 4 having an intake pipe 5 which is at least partially deformable and opens inside the area around the heel of the user, and an exhaust pipe 6 which is longitudinally deformable, The intake pipe 5 and the exhaust pipe 6 are attached to the insole 10 of the footwear by a simple fixture 15,
It is an object of the present invention to provide footwear characterized by being fixed by 16 and 17.

The present invention also provides a method for manufacturing the above-described footwear. First, the footwear body-insole assembly and the air circulation device are separately manufactured, and the air circulation device is manufactured. Providing the footwear, optionally with reinforcements; setting the footwear body-insole-air circulator assembly into an injection mold; and then directly forming a large sole in the mold. A step of injecting the obtained footwear from a molding die after the injected substance is cured.

The present invention will be better understood from the following description of embodiments. The examples do not limit the invention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As can be seen from FIG. 1, the footwear according to the invention has an air circulation device 3 provided in a sole 2.

[0010] In work shoes or footwear of the type of safety shoes, the large sole 2 (outer visible sole of the footwear 1) can be constructed in a conventionally known manner, and the reinforcing material 2 is provided in the large sole. 'Can be included (especially in the case of Cambrian type). Also, the footwear main body 1 is substantially the same as the front end of the footwear
3 may be doubled to form a protective chip or bush (not shown).

According to the invention, the air circulation device 3 basically consists of an at least partially deformable closed chamber 4, an intake pipe 5 provided with a check device 7 of a check valve or check valve and footwear. One longitudinally deformable exhaust pipe 6 is included.

The check device 7 such as the above-described check valve or check valve can be, for example, a known sleeve type having a ball. The ball can be moved to a closed position (corresponding to a rest position of a check valve or valve) and a position through which air can pass through the sleeve by the action of a compressed air flow passing through or about to pass through the sleeve. (FIG. 1).

The closed chamber 4 has a semicircular upper portion 8 which can be elastically deformed, and is arranged in the heel 9 of the footwear 1.
The upper part 8 is in contact with the midsole 10 of the footwear 1.

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

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

In addition, the exhaust pipe 6 is connected to the discharge joint 1.
4, the passage opening 1 attached to the insole 10
Through the 2 ', an opening is formed in the midsole 10 where the user's foot or pelvis rests.

Therefore, the air circulating device 3 takes in air from the area of the heel inside the footwear 1 and exhausts air in the area supporting the toe portion or the rear of the toe.

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

The series of intake-exhaust operations is controlled by a non-return device section 7 which changes according to the pressure fluctuation applied by the user to the semicircular upper portion 8 of the closed chamber 4.

When the user walks, the circulation or ventilation of the air generated by the air circulation device 3 becomes particularly large. Since the load of the entire foot is greatly applied to the heel portion, the pressure applied by the heel of the user to the upper portion 8 is limited to the upper portion 8.
This is to bring about a large displacement. As a result, due to a series of compression-expansion actions of the closed chamber 4, a pump action of inhaling near the heel and exhausting near the toes is generated.

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

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

As shown in FIG. 2, each fitting or locking fixture has, for example, one annular piece 15 provided at the upper part of the midsole 10 and at the passage openings 12, 12 '. The annular piece 15 has radial projections 16 on its inner circumference, and the projections 16 act to narrow the inner inner circumference. The other end of the annular piece 15 is the intake pipe 5, the exhaust pipe 6, or an optional joint 1
4 has a projection, a shoulder 17 or continuous or discontinuous radial projections formed on the outer end.

According to another aspect of the present invention, footwear 1
The inner sole or the insole can be provided on the upper part of the insole 10 for design or hygienic considerations. The insole or insole has grooves or narrow grooves that converge 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 part 8.
Has at least one stop 18 at the top, which connects the air circulation device 3 to the insole 10. In addition, the upper part 8 is resiliently supported by a compression spring 19 provided inside the closed chamber 4.

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

The solid substance can also be in the form of a fragrance container containing, for example, a chemical substance for removing malodors.

As a modification as described above, the closed chamber 4 can be made of a liquid substance for removing odors of organic substances, and this liquid substance is applied under the pressure of the intake pipe 5, for example, in the intake pipe 5. May be injected by a special ejection device, such as a deformable tube with one end inserted into it.

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

According to the present invention, the large sole 2 can 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 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, has 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 it.

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

According to the invention, the air circulation device 3 can be manufactured in a single step, essentially by injection molding, of the side wall with the intake pipe 5 of the closed chamber 4 of the air circulation device 3 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, a part of the exhaust pipe 6 is inserted into a hole provided in the closed chamber 4 in advance, and then attached and fixed. I do. The exhaust pipe 6 has a length adapted to the size of the footwear 1 and can be provided with a joint 14 at its free end.

As one mode, the exhaust pipe 6 diffuses air injected from the closed chamber 4 through an inner bottom 10 having a plurality of passage openings 12 ′, and removes dust from a filter. Means can also be provided.

According to the present invention, the midsole 1 of the air circulation device 3
The attachment to the zero 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. Thereby, each fixture 15, 16, 17
Are engaged or locked by the above. The air circulation device 3 is disposed on the inner bottom 10 with respect to the closed chamber 4 and / or the exhaust pipe 6.
Is positioned by one or a plurality of stoppers 18 provided on the upper part of the vehicle. That is, the air circulation device 3 is attached to the midsole 10 by pushing the stopper 18 into one or a plurality of holes indicated by the corresponding reference numeral 20 provided in the midsole 10.

The present invention is not limited to the above embodiment and the accompanying drawings. That is, it is apparent that the present invention can be replaced by equivalent technology and different components 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 large soles
Circulate or circulate 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 the air is supplied into the inside of the footwear in which the waterproof property is ensured, the comfort of the user is remarkably improved, and there is an effect of remarkably preventing the spasm of the feet. In addition, the simple fixing tool and the air circulating device positioning means (stopper) have an advantage that the large bottom including the air circulating device can be easily formed by the large bottom forming die.

[Brief description of the drawings]

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

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

[Explanation of symbols]

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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A43B 13/20 A43B 7/08 B29D 31/50

Claims (12)

(57) [Claims] 1. Footwear, in particular made by molding , air
In work shoes and / or safety shoes having a large sole with a circulating device 3 , said air circulating device 3 is provided in the large sole 2.
Is at least partially deformable and usable
With an intake pipe 5 opening inside the area around the heel of the elderly
More basic with a closed chamber 4 and a longitudinally deformable exhaust pipe 6
The intake pipe 5 and the exhaust pipe 6 are footwear.
Fixed to the insole 10 by simple fixtures 15, 16, 17
Footwear characterized by being done . 2. The closed chamber 4 has an elastically deformable semi-circular upper portion 8 and is disposed in a heel 9 of the footwear 1. The upper portion 8 is formed on a midsole 10 of the footwear 1. The footwear according to claim 1 , wherein the footwear is in contact with the footwear. 3. The intake port 11 of the intake pipe 5 is provided with a non-return device 7, and through the opening of the insole 10 or the passage 12 attached to the footwear body 13, the area around the heel of the user. 3. The footwear according to claim 1, wherein the footwear is open to the inside. Wherein said exhaust pipe 6, optionally via the discharge joint 14, the passage opening attached to the insole 10 1
3. Opening through the 2 'to the area of the midsole 10 where the user's foot or pelvis rests .
3. The footwear according to any one of 3 . Wherein said intake pipe 5, a joint 14 provided in the same manner as the exhaust pipe 6 or optionally the passage opening 12, 12 '
Through the fitting or locking type simple fixing tool 15, 1
The footwear according to any one of claims 2 to 4 , wherein the footwear is fixed to the insole 10 by 6, 17 . 6. A can be provided inside bottom or insole to the upper portion of the insole 10, wherein the bottom or insole insole 10
It has a passage opening 12, 12 'groove or narrow grooves converging zone, the groove or narrow groove claim 1, characterized in that it has an air distribution or air induction means
5. Any of the footwear according to 5 . 7. The closed chamber (4) has at least one stop (18) on the upper part (8).
Connecting the air circulation device (3) to the insole (10), in addition, the upper part (8) is resiliently supported by a compression spring (19) provided inside the closed chamber (4 ).
The footwear according to any one of claims 1 to 6 . Wherein said outsole 2 is any of footwear of claims 1-7, wherein the is composed of foamed polyurethane layer is a single cushion layer. Wherein said outsole 2, claim 1, wherein the density of the polyurethane foam is a polyurethane foam having a plurality of cushion layer laminated with or different foamed polyurethane layer changes Footwear. 10. The footwear body-insole assembly and the air circulating device are separately manufactured, and the air circulating device is provided on the midsole, optionally with a reinforcing material;
Setting the insole-air circulation device assembly into an injection mold; then injecting directly into the footwear body and the insole a material that forms a large sole in the mold; curing the injected material Removing the obtained footwear from the mold after performing the method. 11. The production of said air circulation device 3 comprises the step of producing the side wall with intake pipe 5 and the upper part 8 of the closed chamber 4 of said air circulation device 3 essentially by injection molding;
Next, a check valve device 7 is attached to the intake pipe 5, and a hole provided in the closed chamber 4 has a length corresponding to the size of the footwear 1 and a joint 14 at its free end. 11. A method for manufacturing footwear according to claim 10 , further comprising the step of: inserting a part of the exhaust pipe 6 capable of being provided, and attaching and fixing the exhaust pipe. Attachment to the bottom 10 in the 12. The air circulation device 3, the corresponding passage opening 12 and 12 '
The air circulating device 3 is mounted on the closed chamber 4 and / or the exhaust pipe 6 at the upper part with respect to the insole 10 until it is fixed by fitting or locking by the fixtures 15, 16, 17. Or by pushing the free ends of the intake pipe 5 and the exhaust pipe 6, and possibly the joint 14, until they are positioned by pushing the plurality of stops 18 into one or more holes 20 provided in the insole 10. The method for producing footwear according to claim 10 or 11, which is performed.