KR20110087710A - The customized insole - Google Patents

Abstract

PURPOSE: A customized insole is provided to form the shape of plantar in a standard shape and to improve stability. CONSTITUTION: A customized insole comprises: a covering layer(110) forming the contact surface of the plantar; a cushion material layer(120) which is laminated in the lower part of the covering layer and improves adhesion workability of the insole while alleviating an impact applied to the covering layer; a PTC heating plate(130) which is laminated in the lower part of the cushion material layer and is heated to a preset temperature by being provided with power source; and an EVA memory material layer(140) which is laminated in the lower part of the PTC heating plate.

Description

Customized Insole {The customized insole}

The present invention relates to a shoe insole, and more specifically, to a heat generating structure, a PTC heating element powered by a shoe insole, which is powered by the shoe insole, can be quickly and easily carried out regardless of the location, and the body's structural non-uniform load and impact The present invention relates to a customized shoe insole that allows the insole to be manufactured and worn according to the shape of the sole of the wearer so as to balance the treatment to maximize the fit and minimize fatigue.

Since the foot is a site constantly under pressure in proportion to the amount of activity of the individual, various problems may occur due to the degree of weight, walking habits or shoe conditions.

Furthermore, the foot is farthest from the heart and has physical characteristics that are prone to mismatches, including blood circulation disorders. Especially when the blood that reaches the toe is returned to the heart through the veins, it is difficult for the body to waste. It is easy to accumulate because it is not transported and removed by the blood, and as a result, peripheral blood circulation disorder occurs due to poor circulation and cold or cold, and various parts of the human body do not have their own functions. There is a problem that is caused.

Therefore, it can be said that the improvement of the shoe insole, which is in contact with the sole for the longest time in a person's life, plays an important role in promoting health. In general, the shoe insole 10 as shown in FIG. After the cushion material layer 12 was formed of a synthetic resin material that absorbs the impact of the adhesive material, the cushion material layer 12 was manufactured by adhesively laminating the cover material layer 11 of artificial leather, vinyl paper, or fiber on top of the cushion material layer 12.

The general shoe insole 10 can provide a foot comfort by reducing the impact on the foot by alleviating the impact of the foot generated when the user stepped on the floor, while preventing the user's foot directly in contact with the bottom of the hard shoe.

However, the general shoe insole 10 as described above is the shape of the average person's foot mass produced at the factory, and it is difficult not only to make use of the sole characteristics of each individual but also to effectively disperse the pressure of the sole. As the insole is continuously compressed under the load of the user, the cushioning force absorbing the shock gradually decreases in the compressed area, so that the impact on the foot is not properly alleviated, causing the foot to be tired and the sole of the foot.

From this, a customized shoe insole has been proposed that undergoes shaping (or reshaping, in practice, if it has an essentially basic form of some kind after manufacture) to correct the discrepancy between the wearer's foot and the insole. The customized shoe insole, which is made of plaster-shaped foot frame, took a long time, which was at least 3-4 days, was expensive, and had a limitation in being widely distributed.

In view of such circumstances, as a technique for manufacturing and distributing the insole to match the shape of the foot of a conventional wearer at a low cost, in the conventional custom shoe insole 20 as shown in Figs. 2A and 2B, it is shown in Fig. The cover material layer 11 and the cushion material layer 12 of the general shoe insole 10 as shown in the intermediate layer between the cover material layer 21 and the cushion material layer 22 is made of a thermoplastic material when applied to heat the wearer After the insole is shaped to fit the shape of the foot, the conventional customized shoe insole 20 is adhesively laminated and laminated to the foamed EVA layer 23, which is a polymer material that is cured again when the temperature decreases. As shown in FIG. 4, after heating in a microwave oven or oven for 10 minutes at a temperature of 60 ° C. to 120 ° C., the shoe insole 20 of the heated state is placed on the shoe. And was such that the wearer from heel toe If the report for 5 minutes and molded to fit the shape of the wearer's foot in the middle portion and the front sole of the foot.

In the conventional custom-made shoe insole 20, when the sole is worn close to the insole to improve the feeling of comfort as well as significantly reduce the fatigue of the foot, insole molding process insoles in the heating means such as microwave oven or oven so that the insole The process of making a customized shoe insole was a cumbersome problem.

This is another conventional custom shoe insole as shown in Figs. 5a and 5b integrally built in the heating means for heating the foamed EVA layer inside the insole so that it can be quickly and easily manufactured regardless of the place In (30), the heat-generating sheet 34 to which the power supply connector 35 is connected is laminated between the cover material layer 31, the cushioning material layer 32, and the foamable EVA layer 33, which are laminated at the top. do.

Here, the foamed EVA layer 33 is mainly a thermoplastic mixed resin, which is an unfoamed state using a thermoplastic mixed resin mainly composed of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and ethylene vinyl acetate (EVA). As, for example, it is possible to deform the mixed resin layer while foaming within a temperature range of 60 ~ 120 ℃ and has a characteristic of maintaining a deformed state while cooling and curing at room temperature.

In addition, the heating sheet 34 is coated with a carbon resistor that generates heat on the upper surface of the deformable panel so that power can be applied to the circuit end configured to enable the power supply to be conducted using the power supply connector 35. For example, it is controlled to operate in the range of 60 ~ 120 ℃.

This conventional customized shoe insole 30, as shown in Figure 6, when the power is applied to the heat generating sheet 34 through the power supply connector 35 in the power supply control unit 34 is generated in the heat generating sheet 34 When the wearer steps the insole in a state in which the foamed EVA layer 33 is rapidly foamed by a heat source, deformation of the foamed EVA layer 33 conforming to the sole of the wearer is made as shown in FIG. Cooling and curing in the form of a customized shoe insole (30), it does not use a separate oven or microwave, and can significantly reduce the custom work process, and can be custom molded anywhere the power is supplied to increase work accessibility You can do it.

In other words, the heating means is built into the insole so that the heating means is heated when the power is applied, thereby rapidly foaming the unfoamed foam sheet so as to easily manufacture and supply a customized shoe insole corresponding to the shape of the sole of the wearer.

However, the cushion material layer 32 in the other customized shoe insole 30 is generally employed mainly polyurethane material or sponge, and the upper cover material layer 31 and the lower heat generating sheet 34 is bonded with an adhesive or the like. Since the adhesion process is not smooth, the workability is low, and when shoes are worn for a long time, sweating occurs inside, and there is a problem that bacteria or bacteria inhabit such as mold due to the body temperature of the foot.

In addition, the heating sheet 34 in another conventional customized shoe insole 30, for example, to be controlled to operate in the range of 60 ~ 120 ℃, additional equipment such as a circuit for temperature control is additionally required once each individual After molding to fit the shape of the foot of the custom shoe insole that has the property of continuing to use it is more than necessary manufacturing cost burden.

From this, the present invention is to solve the above problems, improve the adhesion workability of the insole, improve the fit and keep the environment inside the shoes comfortable, custom shoe insole that is mostly used after molding once It can be manufactured and supplied at low cost considering its characteristics, while supporting the arch and heel of the foot, and forming the concave yongcheon and the arch corresponding to the arch located at the center of the foot in a standard shape in advance so as to protrude curvedly. The object of the present invention is to provide a customized shoe insole which quickly and optimally improves a sense of stability according to wearing.

In order to realize the above object, the present invention, in a customized shoe insole made of a plurality of layers to match the sole of the wearer, a cover material layer made of a material such as artificial leather, vinyl or fiber, forming a contact surface of the sole and; A cushioning material layer laminated under the cover material layer, the cushion material layer being formed of a natural latex material layer to relieve an impact applied to the cover material layer and to improve adhesion workability of the insole and to maintain a comfortable interior environment of the shoe; A PTC heating plate laminated on the lower portion of the cushioning material layer and directly receiving power through a power supply connector without having a separate temperature controller; And, laminated on the lower portion of the PTC heating plate, supporting the arch and the heel portion of the foot, and formed in the standard shape in advance so as to project the curved concave portion and the arch located in the center of the sole to the curved and heat from the PTC heating plate It provides a customized shoe insole comprising a; a highly rigid EVA memory material layer to be supplemented during the heating molding.

Preferably, the highly hard EVA memory material layer may be formed with even ventilation holes in the whole to release air during adhesive lamination to improve adhesion workability.

According to the customized shoe insole according to the present invention having the configuration as described above, by forming the cushion material layer of a natural latex material layer to improve the adhesive workability of the insole and has the original recovery power to prevent deformation and crushing of the cushion to improve the fit In addition, there is an effect that keeps the internal environment of the shoe comfortable.

In addition, according to the customized shoe insole according to the present invention having the configuration as described above, by adopting a heating means capable of heating the high hardness EVA memory material layer as a PTC heating plate by connecting directly to the power supply terminal without a separate temperature control unit By allowing it to be heated to a set temperature, it is possible to manufacture and supply at low cost in consideration of the characteristics of a customized shoe insole that is mostly used as it is after molding.

And according to the customized shoe insole according to the present invention having the configuration as described above, the foot soles and heel of the standard shape in advance so that the EVA layer to be molded to fit the shape and characteristics of the wearer's foot closer to the shape and characteristics of the wearer in advance It is formed of a high-hard EVA memory material in a molded state, which supports the arch and heel of the foot, and the concave yongcheon area and the arch corresponding to the arch of the foot are formed in a standard shape in advance so as to protrude curvedly. The degree of supplementation at the same time is also effective to quickly and optimally improve the stability of wearing.

1 illustrates a typical shoe insole,
2A and 2B show a conventional custom shoe insole,
Figure 3 illustrates the process of applying heat to the custom shoe insole of Figure 2a,
FIG. 4 illustrates a process of manufacturing a customized shoe insole suitably applied to the wearer of FIG. 3,
5A and 5B illustrate another conventional custom shoe insole,
Figure 6 illustrates the process of applying heat to the custom shoe insole of Figure 5a,
7a and 7b illustrate a custom shoe insole according to an embodiment of the present invention,
FIG. 8 illustrates a process of manufacturing a customized shoe insole suitably applied to the wearer of FIG. 7B.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art can easily implement the present invention. It is not intended that the technical spirit and scope of the present invention is limited, and the same parts as in the conventional configuration use the same reference numerals and names.

7A and 7B illustrate a custom shoe insole according to an embodiment of the present invention.

Custom shoe insole 100 according to an embodiment of the present invention, as shown in Figure 7a and 7b, is made of a plurality of layers while matching the sole of the wearer, cover material layer 110 in order from the top, The cushion material layer includes a natural latex material layer 120, a PTC heating plate 130, and a hard EVA memory material layer 140. It is manufactured by compressing it into a flat sole shape that can be used as a general insole.

The cover material layer 110 is a hot melt adhesive is applied to the upper side of the natural latex material layer 120 is attached to the upper surface of the natural latex material layer 120 to form a contact surface of the sole, artificial leather or vinyl or Any natural fiber such as cotton can be used, and the natural latex material layer 120 may have good adhesiveness.

And the cover material layer 110 is more preferably made of a flexible material, the reason is that the deformation of the highly rigid EVA memory material layer 140 and the natural latex material layer 120 by the pressure of heating and pressing This is to give a flexible response to slight volume fluctuations in).

In addition, the breathability, hygroscopicity is required to improve the fit of the wearer in direct contact with the skin when walking, wear strength is also required appropriately.

The natural latex material layer 120 is a cushioning material layer that is laminated under the cover material layer 110 to alleviate the impact applied to the cover material layer 110, and evenly distributes pressure when walking after wearing. It is an eco-friendly material that allows the wearer to walk comfortably and comfortably while providing shock comfort and at the same time, providing optimal comfort and cleanliness to the human body. It can be comfortably maintained to help improve the health of the foot as well as has a very good adhesive workability of the cover material layer 110 and the PTC heating element 130.

The PTC heating plate 130 is a core configuration in the customized shoe insole 100 according to the embodiment of the present invention, which is stacked below the natural latex material layer 120 and directly through the power supply connector 132. It receives power and operates heat at set temperature.

The PTC heating plate 130 has a positive temperature coefficient (PTC) that can generate resistance heat when a power is applied (a static characteristic coefficient that rapidly increases the resistance value with respect to the temperature rise when a certain temperature is reached). .

In general, the resistance does not change significantly with temperature. In the case of PTC heating element, the resistance increases rapidly at a certain temperature as the temperature increases. Therefore, if the temperature rises above a certain temperature, the resistance decreases and the current decreases, thereby reducing the heat generation temperature.As the temperature decreases, the resistance decreases and the current increases as the resistance decreases. do.

Therefore, the heating element temperature may be constantly controlled while directly supplying power through the power supply connector 132 without requiring a special control device such as a controller for temperature control.

The PTC heating plate 130 forms a conductive heating pattern 131 which is formed by printing the silver paste to be applied only to a portion of the flexible insulator layer except for a portion where the carbon paste on the strip is applied.

The conduction heating pattern 131 is configured to alternately alternate from left to right toward the center of the entire upper surface of the insulator layer.

In addition, current flows from the power supply device through the power supply connector 132 to the energization heating pattern 131, and the introduced current generates resistance heat by the insulator layer, and the temperature of the resistance heat rises to a predetermined temperature. As a result, the current is insulated by the printed carbon paste layer so that the temperature no longer rises.

After that, when the temperature is lowered, the insulation by the carbon paste layer is stopped, and the temperature is increased again, thereby automatically maintaining a constant temperature without a separate temperature control operation.

The exothermic temperature may be designed to be appropriately adjusted according to the interval of the energization exothermic pattern 131 and the carbon content of the carbon paste layer.

In the embodiment of the present invention, when the surface temperature of the PTC heating plate 130 is raised within the range of 70 ~ 120 ℃, it is insulated by the carbon paste layer to prevent further rise in temperature and at the same time maintain the set temperature. To be.

The hard EVA memory material layer 140 is adhesively laminated to the lower portion of the PTC heating plate 140, supports the arch and the heel portion of the foot, and corresponds to the concave yongcheon portion and the arch located at the center of the foot. It is formed in a standard shape so as to protrude in advance, and supports the load of the sole of the shoe wearer to hold the insole frame.

In addition, the high-hard EVA memory material layer 140 is completed within approximately 6 minutes until the heating and forming after applying power to the PTC heating plate 130, mainly during low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and ethylene vinyl acetate (EVA) are used as the main component of the thermoplastic mixed resin.In general, the higher the density, the higher the crystallinity, the higher the density, the lower the crystallinity is reversed, the more flexible properties appear at room temperature When heat is applied, the physical properties change to a deformable state, so that when the wearer presses the sole, the shape of the sole is complemented.

In addition, the highly rigid EVA memory material layer 140, evenly formed through-holes 141 in the whole to discharge the air during adhesive lamination to improve adhesion workability.

When described in detail with reference to the accompanying drawings the use process of the customized shoe insole 100 according to an embodiment of the present invention having the configuration as described above are as follows.

FIG. 8 illustrates a process of manufacturing a customized shoe insole suitably applied to the wearer of FIG. 7B.

Custom shoe insole 100 according to an embodiment of the present invention, as shown in Figure 8, after applying power to the PTC heating plate 130 without a separate temperature control device through the power supply connector 132 When the temperature is maintained and the set temperature is maintained, the wearer's foot stepped on the upper cover member 110 while the power supply was cut off, and the pressure was applied by the weight to match the shape of the sole. ) And then leave it as it is, and harden it at room temperature to complete the shape that matches each person's foot.

Of course, the customized shoe insole 100 according to the embodiment of the present invention, the work can be done either alone or in the state put into the shoe during the tailoring process.

After the power is applied to the PTC heating plate 130, all operations are completed within about 6 minutes until the heating and molding of the hard EVA memory material layer 140 are formed.

When a high temperature of the hard EVA storage material layer 140 in the unmolded state is applied to the bottom surface of the hard EVA storage material layer 140, a molding accelerator is applied to the bottom surface of the hard EVA storage material layer 140. The layer 140 may be molded more quickly according to the shape of the sole of the wearer.

This invention is not limited to the above embodiments, various modifications are possible within the scope of the invention described in the claims, and such modifications are also included within the scope of the invention.

10: common shoe insole
11, 21, 31, 110: fiber cover material layer
12, 22, 32: cushioning layer
20: Conventional Custom Shoe Insole
23, 33: foamable EVA layer
30: Conventional Other Custom Shoe Insole
34: heating sheet
35, 132: power supply connector
100: customized shoe insole according to the embodiment of the present invention
120: natural latex material layer
130: PTC heating plate
131: energized heating pattern
140: high rigid EVA memory material layer
141: ventilation hole

Claims (2)

In a custom shoe insole made of multiple layers to match the wearer's sole,
A cover material layer made of a material such as artificial leather, vinyl or fiber, and forming a contact surface of the sole;
A cushioning material layer laminated under the cover material layer, the cushion material layer being formed of a natural latex material layer to relieve an impact applied to the cover material layer and to improve adhesion workability of the insole and to maintain a comfortable interior environment of the shoe;
A PTC heating plate laminated on the lower portion of the cushioning material layer and directly receiving power through a power supply connector without having a separate temperature controller; And,
Laminated on the bottom of the PTC heating plate, the arch and heel portion of the foot to support the concave yongcheon and the place corresponding to the arch located in the center of the foot to form a standard shape in advance so as to protrude curved and supply heat from the PTC heating plate Custom shoe insole, including; a hard EVA memory material layer to compensate for the heat molding. 2. The customized shoe insole of claim 1, wherein the highly rigid EVA memory material layer evenly vents the entire air to release air during adhesive lamination to improve adhesive workability.

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