JPH1033204A - Multi-layer cup insole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To directly blow off air upwards to the sole by forming an air chamber inside a lower layer which is a repulsive material, forming a groove on the upper surface of the lower layer and turning the groove to an air passage. SOLUTION: An upper layer 3 is formed by a non air permeable material like a leather material for which small holes 31 are dispersed and the lower layer 1 bonded to an intermediate layer 2 is formed by an air impermeable repulsive material. By radialy forming the grooves 13 from the center of the upper surface of the lower layer 1, the air inside the grooves 13 is distributed in appropriate directions and made to smoothly flow accompanying the movement of a load part from the sole at the time of a load. For the grooves 13, an opening width is formed wide and flexibility and air permeability are improved in a first half part where the toes are positioned and the width is formed narrow and a shape keeping property is maintained in a second half part where a heel part is positioned. A space formed by a recessed chamber 14 at the center part of the lower layer 1 and a swollen projection part 22 at the center part of the intermediate layer 2 is turned to the air chamber of a sufficient amount. Since a bottom surface is formed flat for the intermediate layer 2, the air of the air chamber and the air inside the grooves 13 are made to flow out without leakage by pumping at the time of the load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup insole which is an insole used by being inserted into shoes.

[0002]

2. Description of the Related Art Conventional shoe insoles are classified into two types: a single material having a flat shape cut into a last, and a cup insole having a concave last according to the shape of the sole. The flat shape can be manufactured at a low cost, and the cup insole has an advantage that the sole of the foot can be stably supported.

[0003] Japanese Utility Model Application Laid-Open No. 54-37340 discloses "Shoes sole" for the purpose of improving the cushioning property and air permeability by forming a space portion with a multilayer structure.

[0004] Furthermore, the actual fairness 4 of the applicant's application
No. 18403, in a multilayer cup insole comprising three or more layers, a groove which communicates from the center to the side periphery and opens on the lower upper surface of a concave footprint made of a synthetic resin made of a non-breathable and repulsive material. Are formed to be approximately radial and have an appropriate width, and an intermediate layer having a flat bottom surface made of a breathable material such as a nonwoven fabric is laminated and bonded thereon.

In the conventional device, the groove is formed in the front half where the toes are located, and the front half is thin and hardened by pressure molding. In the latter half where the heel is located, the latter half is thicker and the shape retention tends to be reduced, so that the groove width is formed narrow so as not to impair the shape retention.

[0006]

However, the conventional insole material has the following problems. Flat insole materials have problems with cushioning and fatigue reduction suitable for stepping pressure. The cup insole has a fit, but has a problem that heat retention and moisture are generated in a concave portion.

[0007] In the construction of Japanese Utility Model Laid-Open Publication No. Sho 54-37340, the upper member is mesh-like, so that a flat surface required for pumping is not formed. Therefore, the flow due to the pumping during the application of the pressure cannot be formed, and the flow easily stays between the spacer members or in the peripheral space.

Japanese Utility Model Publication No. 4-18403 discloses that air is formed in the lower radial groove to improve air permeability, to improve the fit and to remove moisture and heat, and to provide a comfortable fit. Although it provides a comfortable insole, it has a weak point in air flow due to weak restoring force of pumping generated when walking or loading.

By providing the grooves as air passages in a generally radial manner, air accompanying the movement of the weighted portion from the sole during weighting flows through the grooves in an appropriate direction around the side, and this air is transferred to the shoe. It acts to flow on the inner wall surface, and it is also required to flow upward so as to flow intensively to the recessed portion of the sole of the foot.

[0010]

The present invention is a multilayer cup insole comprising the following lower layer (1), intermediate layer (2), and upper layer (3). The multi-layer cup insole includes a central recess (14) in the rear half of the lower layer (1) and an intermediate layer (2).
One of the features is that the air chamber (23) is formed by combining with the bulging projection (22) provided at the center of the latter half of the above.

The lower layer (1) is made of a non-breathable, resilient material, and the upper surface (11) is concave in the shape of a toe and has a flat bottom surface (12). In the hard front half, a tapered groove (13) extending from the central groove to the side periphery to the middle in a radially extending manner is formed with a wide opening width, and the rear half of the wall where the heel is located has a concave chamber in the center. (1
4) is formed, and a groove (13) extending to the middle in a narrow radial width approximately communicating therewith is formed. The groove (13) is tapered on the tip side, and has a vigorous air release.

The shape of the concave chamber (14) formed in the center of the rear half is a so-called "figo" type or "aubergine" type with a narrow front outlet.

The point where the concave chamber (14) is provided and the tapered groove (1)
The interruption of 3) is closely related. Since the air is discharged by pumping, the air discharge direction can be improved by guiding the air upward so as to hit the sole without interrupting the groove (13) without discharging the air to the side circumference. . In the latter half, a concave chamber (14) is provided to maintain shape retention and cushioning properties, but the groove (13) communicating therewith is narrowed and shortened to maintain shape retention.

The intermediate layer (2) is a non-woven fabric or a gas-permeable material having open cells formed therein or a gas-impermeable material having small holes (21) dispersed therein, and has a shape fitting to the upper surface of the lower layer (1). A bulge (22) at the center of the rear half where the heel is located
Is formed. The bulging projection (22) has resilience, has a space on the back surface, and at least this portion is formed to be non-ventilated. In addition, the bulging convex part (2
A configuration in which a downwardly projecting protrusion (24) is provided on the back surface of 2) is also proposed.

The upper layer (3) is a non-breathable material such as a cloth material, a nonwoven fabric, a breathable material having continuous cells formed therein, or a leather material having small holes (31) dispersed therein. It is a substantially similar solid shape that fits.

In order to enhance the restoring force of the pumping of the air chamber (23), the concave chamber (14) in the rear half of the lower layer (1).
In addition, an open-cell foam material piece (16) having air permeability and resilience is loaded. Open-cell foam material piece (16)
Is a highly resilient urethane foam or sponge. The shape of the open-cell foam material piece (16) is a small mountain-like shape with a wide horizontal bottom surface and can be stably loaded. Since the upper and lower surfaces of the air chamber (23) are surrounded by a non-breathable material, there is no need to control the direction in which the air is released and perform any processing on the predetermined surface of the sponge so that the air is not scattered. In addition, the open-cell foam material piece (16) is placed in a bag made of a non-breathable and shape-recoverable material, and a hose is loaded at the end thereof.
The direction of release can also be controlled.

Further, as a different configuration, a large number of upwardly projecting elastic projections having a lower front side for assuring restoring force of pumping and shape retention are provided in a concave chamber (14) in the center of the rear half of the lower layer (1). (15) is proposed. The elastic projection (15) has a streamlined or elliptical columnar wing cross section in plan view with a base portion formed in a thick taper, and has a flat tip, and a height or a little protruding from the upper surface of the substantially lower layer (1). Height. A large number of elastic projections (15) are erected in parallel, and a gap between them forms an air flow path. Elastic projection (1
5) A small amount of air is sent upward and forward in the above shape. It is also suitable for dispersing air in the radial direction. In addition, a hole corresponding to the elastic projection (15) is formed in the open-cell foam material piece (16), and this is fitted into the concave chamber (14) provided with the elastic projection (15), and both may be used together. it can.

In the present invention, by pumping during walking,
A large volume of air is sucked into the concave chamber (14) at the center, and a large air flow can be created inside the groove (13) by the load.

Further, by providing the groove (13) as an air passage in a substantially radial manner and interrupting the air, the air accompanying the movement of the load point from the sole during walking flows through the groove (13), It will be discharged upwards hitting the back,
The internal air can be used very effectively.

In the front half where the toes are located, the front half of the groove (13) is thin and hardened by pressure molding, so that the width of the groove (13) is increased to provide flexibility (flexibility) and ventilation. In the latter half where the heel is located, this latter half is thicker and the shape retention tends to decrease, so a technique is also used to form the groove width narrower so as not to impair the shape retention. ing. The depth and shape of the groove (13) can be designed in various modes depending on the application.

[0021]

FIG. 1 is an exploded perspective view showing an embodiment of a multilayer cup insole according to the present invention. FIG.
FIG. The multi-layer cup insole is obtained by laminating different materials on multiple layers, and is composed of three layers: a lower layer (1), an intermediate layer (2), and an upper layer (3).

The lower layer (1) is made of a relatively thick non-breathable resilient material of 2 to 7 mm, has a flat bottom surface and a shape that fits the bottom surface of the shoe, and an upper surface thereof has a sole shape. The shape of the foot is concave to fit. The lower layer (1) is a PE foam, an EVA foam, a rubber foam, or the like. It is created by adjusting the resilience (cushioning property) depending on the use of the cup insole. The foaming ratio of the material is in a range where the groove (13) is not crushed and the cushioning property can be maintained. The lower layer (1) is separately manufactured in advance and is bonded to the intermediate layer (2).

The lower layer (1) is made of a non-breathable, resilient material, and the upper surface (11) is formed as a concave toe-shaped surface and the bottom surface (12) is formed flat. A central groove (13) is formed in the rigid front half portion, and a tapered groove (13) extending from the center groove (13) approximately radially to the middle to the side periphery.
Is formed to have a wide opening width, and in the rear half of the wall where the heel is located, a concave chamber (14) is formed in the center, and a tapered groove (13) extending to the middle in a narrow, roughly radially narrow width communicating with the concave chamber (14). ) Is formed. The groove (13) has a length that ends halfway and does not reach the outer periphery, so that air directly hits the sole. In addition, tapering halfway has the effect of maintaining shape retention for a long period of time. The central recess (14) forms a sufficient space for air.

Since the groove (13) is formed radially from the center of the upper surface of the lower layer (1), the air inside the groove (13) is dispersed in an appropriate direction due to the movement of the load point from the sole during loading. And make it flow smoothly. Groove (13)
The design and patterning of the depth and shape can be variously changed depending on the cushioning property of the repulsive material and the difference in the application.
The groove (13) has a wide opening or a large number of openings in the front half where the toes are located to improve flexibility (flexibility) and air permeability, and has a narrow width in the rear half where the heel is located. Alternatively, a small number is formed so as not to impair the shape retention. Such a pattern of the grooves (13) also solves the problem of hot press molding of a synthetic resin foam sheet material, a rubber sponge plate, or the like, and expands the range of material selection. That is,
When pressure molding in the production of the lower layer (1),
The difference in the compression ratio due to the difference in the shape of the rear half part forms the difference in the thickness of the lower layer (1) and determines the distribution of the hardness. The front part of the lower layer (1) is thin and hardened by high-pressure compression, The latter half of the lower layer (1) has a problem that it is low-pressure compression and is thick and has a low shape retention. width,
By appropriately forming the number and depth, flexibility and flexibility can be maintained, and the overall shape retention can be maintained.

The intermediate layer (2) may be formed by pressing a coarse nonwoven fabric with a concave top surface and a flat bottom surface, a breathable material having open cells formed thereon, or a non-woven fabric having small holes (31) dispersed therein. A breathable material having a shape fitting to the upper surface of the lower layer (1), and having a resilient bulging projection (22) formed at the center of the rear half where the heel is located. The intermediate layer (2) is laminated and adhered to the upper surface of the lower layer (1) without closing the groove (13) of the lower layer (1). The concave chamber (14) at the center of the lower layer (1) and the bulging protrusion (2) are formed at the center of the intermediate layer (2).
2) forms a sufficient amount of air chamber (23). Since the middle layer (2) has a flat bottom surface, the air in the air chamber (23) and the air in the groove (13) flow out without leaking by pumping under load. In addition, as shown in FIG.
There is also proposed a configuration in which a downward hanging projection (24) that enters the concave chamber (14) at the center of the lower layer (1) is provided on the back surface of (2). In this configuration, the pumping of the heel causes the hanging protrusion (2
4) enters the concave chamber (14) and compresses the air chamber (23). The shape of the hanging projection (24) having a high rear portion and being inclined forward is preferable for pumping.

The upper layer (3) provided on the intermediate layer (2)
It is made of, for example, cloth or leather for decoration or moisture absorption, and can be properly used by performing predetermined secondary processing (spray processing with a moisture absorbent or a water generating agent) depending on the application. The upper layer (3)
A cloth material, a nonwoven fabric, or an air-permeable material having open cells may be used, but the figure shows an air-permeable material such as a leather material having small holes (31) dispersed therein. The arrangement of the small holes (31) is an arrangement in which sweat is released relatively easily, such as between the toes or the depression of the sole. The shape is a substantially similar three-dimensional shape that fits on the upper surface of the intermediate layer (2), and forms a bulged portion (32) in the rear half. For the upper layer (3), a product which has been treated for antibacterial, deodorant, and mildew-proof treatment, a hygroscopic material having a refreshing feeling, and the like can be adopted. In addition, those using fibers mixed with ceramic powder that generates far-infrared rays, those using fibers mixed with copper powder for antibacterial purposes, those immersed in bamboo leaf extract for antibacterial purposes, and those that have been waterproofed Such materials can be combined as appropriate.

An open-cell foam material piece (16), which is a hard sponge having air permeability and resilience, is loaded into the concave chamber (14) in the rear half of the lower layer (1). Since the open-cell foam material piece (16) holds air and has upper and lower surfaces surrounded by a non-breathable material, the air is released only from the outlet when pressed. Note that a paint may be applied to a predetermined surface of the sponge so as not to scatter the air.

FIG. 3 and FIG. 4 show a different configuration, in which a concave chamber (14) is provided in the center of the rear half of the lower layer (1), and a large number of upward elastic members for assuring restoring force of pumping and shape retention. The projection (15) is provided upright. Elastic projection (15)
Is a height which is flat or slightly protruded from the upper surface of the lower layer (1) and which projects slightly from the upper surface of the lower layer (1) and comes into contact with the bulging projection (22) of the intermediate layer (2). The elastic projection (15) needs to be configured so that it can be contracted by pressure from all directions of the heel and restored by opening, and the rear side is made higher and the front side is made slightly lower to push out the pushed air. Is trying to move forward. The elastic projection (15) has a streamlined or elliptical columnar shape in wing cross section in a plan view in which a root portion is formed to have a large taper.
A large number of elastic projections (15) are erected in parallel, and a gap between them forms an air flow path. A small amount of air is efficiently sent upward and forward with the above-mentioned shape of the elastic projection (15).
When the elastic projection (15) is provided, it is suitable for dispersing air in the radial direction. A hole corresponding to the elastic projection (15) is formed in the open-cell foam material piece (16), and this is formed into the elastic projection (1).
It can also be used by fitting into the concave chamber (14) provided with (5).

With these configurations, it is possible to provide a multi-layer cup insole in which pumping is stable, an appropriate amount of air directly hits an appropriate position on the sole evenly, and the whole shape retention can be maintained for a long time.

[0030]

EXAMPLE A lower layer (1) having a groove (13) and a concave portion (14) was formed from a 5 mm thick PE foam, and the concave portion (1) was formed.
4) A sponge (16) was loaded, an adhesive was applied to the upper surface of the lower layer (1), and a nonwoven fabric intermediate layer (2) having small holes (21) at predetermined positions was joined. The lower layer (1) and the intermediate layer (2) form an air chamber (23) in the rear half, and a groove (13) communicating therewith is formed radially inside. The upper layer (3) was made of a breathable / moisture-absorbing cloth material subjected to secondary treatment of antibacterial, deodorant, and mold-proofing, and an adhesive was applied to the spots to be integrated to form a three-layer cup insole.

[0031]

The multilayer cup insole according to the present invention is
With the above configuration, there are the following specific technical effects.

According to the first and second aspects of the present invention, an air chamber is formed inside a lower layer, which is a resilient material, and a groove is formed on the upper surface of the lower layer. The air can be blown upward. The air movement can be produced without loss by overlaying a gas-permeable material having a flat bottom surface on the upper surface of the lower layer having the groove. In particular, the configuration of the air chamber contains a sponge, has resilience and resilience, is capable of continuous pumping and has a foggy shape, and can create a strong air flow.
Moreover, in order not to impair the shape retention even if the air chamber is formed, the radial groove communicating with this is made wider and narrower by the insole part, and the groove is tapered so that it does not reach the outer periphery, He also responds to strength requirements. Since the grooves are formed substantially radially and small holes are provided in the intermediate layer to ventilate intensively at a predetermined position on the soles, there is a great effect in preventing stuffiness and ventilating, such as discharging moisture and heat.

According to the third aspect of the present invention, a large number of elastic projections having a peculiar shape are formed in the air chamber to further assure the function of pumping.

According to a fourth aspect of the present invention, a downwardly projecting projection is formed in the intermediate layer to penetrate into a concave portion of the lower layer to increase the air discharge power. As described above, the multilayer cup insole according to the present invention wraps the soles firmly while maintaining the flexibility, flexibility, resilience, and shape retention required for the insole, and provides sufficient ventilation and ventilation. It is extremely excellent because it has achieved its properties.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a multilayer cup insole according to the present invention.

FIG. 2 is a side sectional view of the same embodiment as above, but in a coupled state.

FIG. 3 is an exploded perspective view showing another embodiment of the multilayer cup insole according to the present invention.

FIG. 4 is a side sectional view of the same embodiment as above, but in a coupled state.

FIG. 5 is a side sectional view showing a different embodiment.

[Explanation of symbols]

 (1) Lower layer (11) Top surface (12) Bottom surface (13) Groove (14) Recess (15) Elastic projection (16) Open-cell foam material piece (sponge) (2) Intermediate layer (21) Small hole (22) Expansion Protrusion (23) Air chamber (24) Hanging projection (3) Upper layer (31) Small hole (32) Swelling part

Claims (4)

[Claims] 1. A multilayer cup insole comprising a lower layer (1), an intermediate layer (2) and an upper layer (3). The lower layer (1) is made of a non-breathable, resilient material and has a concave upper surface and a flat bottom surface. Tapered groove (1
3) is formed with a wide opening width, and in the rear half of the wall where the heel is located, a concave chamber (14) is formed in the center, and a narrow, generally radially tapering groove extending halfway communicates therewith. (13)
An air chamber (23) formed by a concave chamber (14) at the rear half of the lower layer (1) and a bulging convex part (22) at the center of the rear half of the intermediate layer (2) described later. What formed. The intermediate layer (2) is a nonwoven fabric or a gas-permeable material having open cells formed therein or a gas-impermeable material having small holes (21) dispersed therein,
A resilient bulge (22) that is shaped to fit the upper surface of the lower layer (1) and is located at the center of the rear half where the heel is located.
What formed. The upper layer (3) is made of a cloth material, a nonwoven fabric, a gas-permeable material having open cells formed therein, or a gas-impermeable material having small holes (31) dispersed therein.
A substantially similar three-dimensional shape that fits on the upper surface of the intermediate layer (2). 2. An air chamber (23) formed by a concave chamber (14) in the rear half of the lower layer (1) and a bulging projection (22) in the center of the rear half of the intermediate layer (2). 2. The multilayer cup insole according to claim 1, wherein the foam cup is loaded with a piece of open-cell foam material. 3. A large number of elastic projections (15) having a lower front side are provided in a concave chamber (14) in the center of the rear half of the lower layer (1).
2. The multilayer cup insole according to claim 1, wherein the multi-layer cup insole is erected with a gap. 4. A bulging projection (2) in the rear half of the intermediate layer (2).
The multilayer cup insole according to claim 1 or 2, wherein a downward hanging projection (24) is provided on the back surface of (2).