JP2020199011A - footwear - Google Patents

Abstract

To provide a footwear capable of being easily fitted to a foot of a wearer, exhibiting an excellent wearing feeling, and efficiently dispersing also a body pressure in a worn state by a wearer.SOLUTION: There is provided a footwear comprising a sole shape memory layer 30 capable of storing a sole shape of a wearer on a foot mount region above an outer sole 50, the sole shape memory layer 30 comprises: a thermal sense shape storage body layer 31 which is deformed into a sole shape by a body temperature and a self weight of a wearer, and is formed of a thermal sense shape storage body capable of storing the deformed sole shape under a prescribed temperature; a first elastic material layer 32 laminated directly under the thermal sense shape storage body layer 31; and a second elastic material layer 33 laminated directly under the first elastic material layer 32, an elastic modulus of the first elastic material layer 32 is smaller than an elastic modulus of the second elastic material layer 33.SELECTED DRAWING: Figure 6

Description

The present invention relates to a footwear provided with a sole shape memory layer capable of memorizing the sole shape of the wearer in a foot resting area above the outer sole.

For footwear such as shoes, boots, and sandals, if you wear (wear) something that does not fit your feet, your feet may slip or your body pressure may be locally concentrated when walking, causing your feet, ankles, and knees. It causes fatigue, low back pain, and stiff shoulders. Therefore, there is an increasing demand for footwear that can be fitted to the wearer's foot, and various types of such footwear are being developed.
As a conventional technique relating to footwear that can be fitted to the foot of such a wearer, for example, there is the following Patent Document 1.

Japanese Unexamined Patent Publication No. 2005-253494

The above-mentioned Patent Document 1 relates to a shape storage device, an insole of footwear using the insole, and a footwear provided with the insole, and is a hollow granular body in which a plurality of granular bodies 4 are filled in an internal space and can be deformed by an external force. By making the holding means 5 and the internal space of the granular body holding means 5 negative pressure and maintaining the negative pressure state, the granular body 4 is brought into close contact with each other, and a resistance force against an external force is generated on the contact surface of the granular body 4. By providing the check valve 6 which is a negative pressure holding means, the plurality of granules 4 are deformed along the shape of the foot by the external force generated when the wearer wears the footwear, and the internal space is created. The shape of the negative pressure granular holding means 5 is held by the check valve 6 which is the negative pressure holding means. Therefore, there is an advantage that the shape of the sole of the foot can be immediately memorized when an external force is applied, and the fit and stability when the footwear is worn (when worn) can be improved.
However, in the above-mentioned Patent Document 1, a plurality of independent granules 4 are used, and as the granule 4, a small and lightweight spherical foam resin, glass balls, coffee beans, wood, rice, etc. are used. Therefore, there is a problem that the feeling of wearing is inferior because the individual outer shape of the granular body 4 is transmitted to the sole of the foot when the footwear is worn or when walking. Further, since the body pressure of the wearer is not provided to be efficiently dispersed, there is a problem that the body pressure dispersion performance is inferior.

Therefore, the present invention eliminates the above-mentioned drawbacks of conventional footwear, allows the footwear to be easily fitted to the wearer's foot, has an excellent wearing feeling, and can effectively disperse body pressure during wearing. Providing is an issue.

In order to achieve the above object, the footwear of the present invention is a footwear having a sole shape memory layer capable of memorizing the sole shape of the wearer in the foot resting area above the outer sole, and the sole of the foot. The shape memory layer is a warm shape memory layer that is deformed into a sole shape by the wearer's body temperature and its own weight, and is formed by a warm shape memory that can memorize the deformed sole shape under a predetermined temperature. A first elastic material layer laminated directly under the warmth shape memory layer, and a second elastic material layer laminated directly under the first elastic material layer, and the first elastic material layer is formed. The first feature is that the elastic modulus of the elastic material layer is smaller than the elastic modulus of the second elastic material layer.
Further, in addition to the first feature, the footwear of the present invention has a second feature that the warmth shape memory layer is provided with a plurality of through holes penetrating in the thickness direction.
Further, in addition to the above-mentioned second feature, the footwear of the present invention has a third feature that the through hole has a shape extending in a direction orthogonal to the longitudinal direction of the warmth shape memory layer.
Further, in addition to the above-mentioned first to third features, the footwear of the present invention has a fourth feature that the sole shape memory layer is formed in a shape that follows the shape of the inner bottom surface of the footwear. There is.

According to the footwear according to claim 1, when the wearer wears the footwear, the warmth shape memory layer can be easily deformed into the shape of the sole of the foot by the body temperature and its own weight. At this time, the first elastic material layer can secure a space that allows the deformation of the warm-feeling shape memory layer, and deforms the warm-feeling shape memory layer by accurately following the shape of the sole of the wearer. be able to. In addition, it is possible to slowly sink the foot and absorb the impact during walking or the like. At the same time, the second elastic material layer can absorb the impact during walking and reduce the feeling of bottoming out on the ground. Therefore, by combining the effects of the three layers of the warmth shape memory layer, the first elastic material layer, and the second elastic material layer, the insole has a simple structure but is as if it were a custom-made footwear. It is possible to provide footwear having an excellent fit and wearing feeling. In addition, the insole that follows the shape of the wearer's foot can prevent the foot from shifting to the front, back, left, and right when walking, and can effectively disperse the wearer's body pressure. Therefore, the burden on the wearer's feet, ankles, knees, etc. can be reduced, and thereby the footwear can effectively suppress the onset of fatigue, low back pain, and stiff shoulders.
Further, since the warmth shape memory layer can memorize the sole shape under a predetermined temperature, the sole shape once memorized can be maintained under certain conditions. Therefore, under certain conditions, it is not necessary to deform the warmth shape memory layer each time, and the footwear can be made to feel the fit more quickly.
Furthermore, by making the finished footwear with the sole shape memory layer, the size of the foot insertion space is larger than when the sole shape memory layer is attached later like a removable insole. It will not be changed later. Therefore, it is possible to reliably prevent the unpleasant feeling of tightening and wearing the foot due to the subsequent change in the size of the foot insertion space in the completed state of the product, and the footwear can be made more comfortable. ..

Further, according to the footwear according to the second aspect, in addition to the action and effect due to the configuration according to the first aspect, the breathability and flexibility of the sole shape memory layer can be improved.
Further, the hardness of the warm sensation shape memory layer can be weakened, and the time until the warm sensation shape memory layer is deformed into the sole shape can be shortened.

Further, according to the footwear according to claim 3, in addition to the action and effect of the configuration according to claim 2, the flexibility of the sole shape memory layer can be efficiently improved.

Further, according to the footwear according to claim 4, in addition to the action and effect of the configuration according to any one of claims 1 to 3, the sole of the wearer's foot can be received by the surface of the wearer. It is possible to make footwear that can disperse body pressure more effectively.

It is a figure which shows the footwear which concerns on embodiment of this invention, (a) is an overall perspective view, (b) is a side view. It is a figure which shows the main part of the cross-sectional view in the direction of AA of FIG. 1 (b). It is a figure which shows the sole shape memory layer which concerns on embodiment of this invention, (a) is an exploded perspective view, (b) is an enlarged plan view of (a). It is a figure which shows typically the state when the footwear which concerns on embodiment of this invention is put on, (a) is the side view which shows the state which the sole of the wearer is in contact with the inner bottom surface of footwear, (b) is footwear. It is a side view which shows the state which the wearer's own weight is loaded on the inner bottom surface of. It is a figure which shows the state when the footwear which concerns on embodiment of this invention is put on, (a) is the side view which shows typically the state which the sole shape memory layer memorized the sole shape of a wearer, (b). Is a plan view schematically showing a state in which the sole shape memory layer stores the sole shape of the wearer. It is an overall exploded perspective view which shows the footwear which concerns on embodiment of this invention. It is a figure which shows the footwear which concerns on embodiment of this invention, and the deformation example of the sole shape memory layer which comprises a footwear, (a) is the whole perspective view of the footwear, (b) is the side view of the footwear, (c) is a foot. It is a top view of the back shape storage layer.

Hereinafter, footwear according to an embodiment of the present invention will be described with reference to the drawings.

With reference to FIG. 1, the footwear 1 according to the first embodiment of the present invention is a so-called pump for women. Of course, the footwear to which the present invention can be applied is not limited to pumps, but can be applied to various other footwear such as men's shoes, athletic shoes, sandals, and sandals.
As shown in FIGS. 1 and 6, the footwear 1 is composed of an upper 10, an insole layer 20, a foot shape memory layer 30, an insole layer 40, and an outer sole 50.

As shown in FIG. 1, the upper 10 is for forming a foot insertion space 1a in the footwear 1 and for protecting the inserted foot. In addition, it is a main component of the appearance design of the footwear 1.
As the upper 10, various materials that are widely used as the upper of pumps can be used.

The insole layer 20 is arranged inside the footwear 1 and is in direct contact with the sole of the wearer's foot, and mainly serves as a cushioning material when the foot is inserted into the footwear 1. Therefore, in the present embodiment, the size of the upper surface 20a of the insole layer 20 constitutes the size of the foot resting area.
As the insole layer 20, various materials commonly used as insoles for pumps can be used. For example, a synthetic resin material such as EVA (Ethylene-Vinyl Acate Copolymer) can be used.
In the present embodiment, the insole layer 20 is fixedly arranged inside the footwear 1. Of course, the configuration is not limited to this, and the insole layer 20 may be detachably arranged with respect to the footwear 1.
The shape, size, thickness, etc. of the insole layer 20 can also be appropriately changed according to the type of footwear 1.

The sole shape memory layer 30 is arranged in a foot resting area above the outer sole to memorize the sole shape of the wearer and effectively disperse the body pressure of the wearer. is there. In the present embodiment, as shown in FIG. 6, the sole shape memory layer 30 is arranged between the insole layer 20 and the insole layer 40. Of course, the configuration is not limited to such a configuration, and if the configuration is arranged in the foot resting area above the outer sole, the arrangement position of the sole shape memory layer 30 can be appropriately changed depending on the type of footwear. ..

In the present embodiment, as shown in FIGS. 2 to 6, the sole shape memory layer 30 includes a warmth shape memory layer 31, a first elastic material layer 32, and a second elastic material layer 33. It is composed of and.

The warmth shape memory layer 31 is deformed into a sole shape by the wearer's body temperature and its own weight, and the deformed sole shape can be stored under a predetermined temperature (under temperature conditions). It is a layer formed by the body. In the present embodiment, a sheet-shaped warm-feeling shape storage body having a uniform thickness is used.
Here, the "predetermined temperature" means a temperature lower than room temperature, and the "normal temperature" means a temperature of about 15 to 25 degrees. More specifically, in the present invention, as a warm feeling shape storage body, a warm feeling having a property of gently deforming from room temperature to around 28 degrees Celsius and retaining the deformed shape without being deformed at a temperature lower than room temperature. It is configured to use a shape memory. Therefore, in the present embodiment, by wearing the footwear 1 for about 2 to 3 days, it is possible to realize the footwear 1 having an insole that memorizes the shape of the sole of the wearer.
As the warm-feeling shape memory body having such a property, for example, a warm-feeling shape memory material made of a known resin material can be used. Further, as the warmth shape memory material made of a resin material, for example, a material obtained by foaming polyolefin, a polyurethane-based shape memory polymer, or the like can be used, but the material is not limited thereto. In addition, as a material in which polyolefin is fired, for example, a warm shape memory material (tentative name "SMS-01") mainly composed of a material in which polyolefin is fired developed by Mitsui Chemicals, Inc. and Mitsui Chemicals Tohcello Co., Ltd. Known) can be used.
That is, in the present invention, any material may be used as long as it is a material that is gently deformed at around 28 degrees from room temperature and retains the deformed shape without being deformed at a temperature below room temperature. When a warm shape memory material made of a resin material is used, it is preferable to use a material having a glass transition point of about 28 degrees.

Further, in the present embodiment, as the warm feeling shape storage body layer 31, a warm feeling shape storage body having a shape along the entire surface of the inner bottom surface of the footwear 1 (the shape of the upper surface 41a of the insole layer 40) is used. ..

Further, as shown in FIGS. 3 and 6, the warmth shape memory layer 31 is provided with a plurality of through holes S penetrating in the thickness direction. Further, as shown in FIGS. 3 and 6, the shape of the through hole S is a linear shape extending in a direction orthogonal to the longitudinal direction of the warmth shape storage layer 31.
Further, a plurality of through holes S are arranged in parallel in both the longitudinal direction and the lateral direction of the warmth shape memory layer 31. More specifically, as shown in FIG. 3, a plurality of through holes S are arranged in parallel in both the longitudinal direction and the lateral direction of the warmth shape memory layer 31, and are adjacent to each other in the longitudinal direction. The through holes 31 are provided at positions shifted to the left and right from each other.
Further, in the present embodiment, the shapes and sizes of the plurality of through holes S are the same shape and the same size for all the through holes S. Further, the length of the through holes S is about 5 mm, and the distance between the through holes S arranged in parallel in the lateral direction of the warmth shape memory layer 31 is about 5 mm.
The shape, size, arrangement position, density, and the like of the through hole S are not limited to those of the present embodiment, and can be changed as appropriate. For example, in a region where a large amount of body pressure is applied, the through holes S may be provided more densely than in other regions. However, it is preferable that the through holes S are evenly provided on the entire surface of the warmth shape memory layer 31. This is because the warmth shape memory layer 31 can be evenly softened and the footwear can be made comfortable on the feet by providing the footwear evenly.
Further, the through hole S does not necessarily have to be provided, and the through hole S may not be provided in the warmth shape memory layer 31.

The thickness of the warmth shape memory layer 31 can be changed as appropriate, but it is preferably about 0.5 mm to 2 mm, and more preferably about 1 mm. This is because if it is less than 0.5 mm, it is too soft, and if it exceeds 2 mm, it is too hard and the foot contact becomes hard.
Further, the thickness of the warmth shape memory layer 31 may be a uniform thickness as in the present embodiment, or may be a different thickness depending on the region.

The first elastic material layer 32 is an elastic material layer arranged directly under the warm sensation shape memory layer 31, secures a space that allows deformation of the warm sensation shape memory layer 31, and is used during walking or the like. It is for absorbing the impact in.
In the present embodiment, as the first elastic material layer 32, a sheet-shaped urethane foam having a uniform thickness is used. Of course, the material constituting the first elastic material layer 32 is not limited to urethane foam, and may be another material having elastic performance.
The thickness of the first elastic material layer can be changed as appropriate, but it is preferably about 2 mm to 6 mm. This is because if it is less than 2 mm, a sufficient space for accepting the deformation of the warmth shape memory layer 31 cannot be secured, and if it exceeds 6 mm, a foot insertion space 1a cannot be sufficiently secured.
Further, the thickness of the first elastic material layer 32 may be a uniform thickness as in the present embodiment, or may be a different thickness depending on the region.

The second elastic material layer 33 is an elastic material layer arranged immediately below the first elastic material layer 32, and allows deformation of the first elastic material layer 32 due to deformation of the warmth shape memory body layer 31. This is to secure a possible space and to absorb the impact when walking.
In the present embodiment, as the second elastic material layer 33, a sheet-shaped urethane foam having a uniform thickness is used. Of course, the material constituting the second elastic material layer 32 is not limited to urethane foam, and may be another material having elastic performance. For example, a sheet-shaped latex sponge, a sheet-shaped silicone, a sheet-shaped cork, a sheet-shaped felt, or the like can be used. However, it is necessary that the elastic modulus of the second elastic material layer 33 is larger than the elastic modulus of the first elastic material layer 32.
The thickness of the second elastic material layer 33 can be changed as appropriate, but it is preferably about 2 mm to 4 mm. This is because if it is less than 2 mm, a sufficient space for accepting the deformation of the first elastic material layer 32 cannot be secured, and if it exceeds 6 mm, a foot insertion space 1a cannot be sufficiently secured. Further, preferably, the thickness of the second elastic material layer 33 is thinner than the thickness of the first elastic material layer 32.
Further, the thickness of the second elastic material layer 33 may be a uniform thickness as in the present embodiment, or may be a different thickness depending on the region.
The warm shape memory layer 31, the first elastic material layer 32, and the second elastic material layer 33 are adhered to each other via a sheet-shaped adhesive (not shown).

The insole layer 40 is arranged directly above the outer sole 50, connects the upper 10 and the outer sole 50, and serves as a base for supporting the foot on the inner bottom of the footwear 1.
For the insole layer 40, various materials commonly used as the insole of pumps can be used.
The shape, size, thickness, etc. of the insole layer 40 can also be appropriately changed according to the type of footwear 1.

The outer sole 50 constitutes a ground contact portion of the footwear 1.
As the outer sole 50, various materials commonly used as the outer sole of pumps can be used.
The shape, size, thickness, etc. of the outer sole 50 can be appropriately changed according to the type of footwear 1.

The upper 10, the insole layer 20, the sole shape memory layer 30, the insole layer 40, and the outer sole 50 described above are each cut to a predetermined size, and then subjected to the same process as the known footwear manufacturing method. The footwear 1 is manufactured by being integrated.

Next, with reference to FIGS. 1, 4, and 5, a state in which the sole shape memory layer 30 is deformed when the wearer wears the footwear 1 of the present invention having such a configuration will be described.
First, with reference to FIGS. 1 and 4, the wearer inserts the foot F into the foot insertion space 1a and places it on the insole layer 20. Then, by standing up and walking in that state, the body temperature of the wearer is transmitted to the warm sensation shape memory body layer 31, and the warm sensation shape memory body layer 31 is warmed.
At the same time, the weight of the wearer is loaded on the insole layer 20 (not shown in FIGS. 4 and 5), the warm shape memory layer 31, the first elastic material layer 32, and the second elastic material layer 33. As a result, as shown in FIG. 4B, the region in contact with the sole of the wearer's foot in each layer is deformed in a concave shape. More specifically, first, the warmth shape memory layer 31 is deformed in a concave shape in a shape that follows the wearer's foot shape. Along with this, the first elastic material layer 32 is deformed in a concave shape along with the shape change of the warmth shape memory layer 31. Further, the second elastic material layer 33 is deformed in a concave shape along the shape change of the first elastic material layer 32. By these series of deformations, finally, as shown in FIGS. 4B and 5, a predetermined region of the sole shape memory layer 30 (warm shape memory layer 31, first elastic material layer 32, The predetermined region of the second elastic material layer 33) is deformed into a sole shape U that follows the foot shape of the wearer.
Then, when the wearer takes off the footwear 1 and puts the footwear 1 at a temperature lower than room temperature, the foot sole shape U of the deformed sole shape memory layer 30 is maintained.

The footwear 1 according to the embodiment of the present invention has the following effects.

A sole shape memory layer 30 is provided in the foot resting area above the outer sole 50, and the sole shape memory layer 30 is provided as a warmth shape memory body layer 31, a first elastic material layer 32, and a first. By forming the second elastic material layer 33 having a higher elastic modulus than the elastic material layer 32, when the wearer wears the footwear 1, the warmth shape memory body layer 31 can be easily formed by the body temperature and its own weight. It can be transformed into the shape of the sole of the foot. At this time, the first elastic material layer 32 can secure a space that allows the deformation of the warmth shape memory layer 31 to be tolerated, and the warmth shape memory layer 31 is made to accurately follow the shape of the sole of the wearer. Can be transformed. In addition, it is possible to slowly sink the foot and absorb the impact during walking or the like. At the same time, the second elastic material layer 32 can absorb the impact during walking and reduce the feeling of bottoming out on the ground. Therefore, by combining the effects of the three layers of the warmth shape memory layer 31, the first elastic material layer 32, and the second elastic material layer 33, the sole shape is as if it were made to order, even though it has a simple structure. The footwear 1 can be provided with an insole along the line and has an excellent fit and wearing feeling.

In addition, by providing an insole that conforms to the shape of the sole of the wearer's foot, it is possible to prevent the foot from shifting to the front, back, left, and right when walking. In addition, the sole shape memory layer 30 is deformed along the shape of the sole of the wearer, so that the weight of the wearer is not locally loaded on the insole, but is evenly distributed along the shape of the sole of the foot. By being loaded, the wearer's body pressure can be efficiently dispersed. Therefore, it is possible to reduce the burden on the wearer's feet, ankles, knees, etc., thereby making the footwear 1 capable of effectively suppressing the onset of fatigue, low back pain, and stiff shoulders.

Further, since the warmth shape storage body layer 31 can memorize the sole shape at a temperature lower than room temperature, the sole shape U once stored can be held at a temperature lower than room temperature. Therefore, under certain conditions, it is not necessary to deform the warmth shape memory layer 31 each time, and the footwear 1 can be made to feel the fit more quickly.

Further, by making the finished footwear 1 with the sole shape memory layer 30, the foot insertion space is compared with the case where the sole shape memory layer 30 is attached later like a removable insole. The size of 1a is not changed later. Therefore, it is possible to surely prevent the unpleasant feeling of tightening and wearing the foot due to the subsequent change in the size of the foot insertion space 1a in the completed state of the product, and the footwear 1 is made more comfortable. be able to.

Further, by providing the warmth shape memory layer 31 with a plurality of through holes S penetrating in the thickness direction, the air permeability and flexibility of the sole shape memory layer 30 can be improved. Further, the hardness of the warm sensation shape memory body layer 31 can be weakened, and the time until the warm sensation shape memory body layer 31 is deformed into the sole shape can be shortened.
Further, the through hole S provided in the warm sensation shape memory layer 31 is formed in a linear shape extending in a direction orthogonal to the longitudinal direction of the warm sensation shape memory layer 31, and is formed in the longitudinal direction of the warm sensation shape memory layer 31. By arranging a plurality of through holes S in parallel in both the lateral direction and the lateral direction, the bending line is the direction orthogonal to the longitudinal direction of the warmth shape memory layer 31 during walking. Therefore, a plurality of through holes S can function as bending lines, and the flexibility of the sole shape memory layer 30 can be efficiently improved. In addition, the through holes 31 adjacent to each other in the longitudinal direction can be formed. By providing the components at positions shifted to the left and right from each other, it is possible to effectively prevent the warmth shape storage layer 31 from breaking.

Further, by forming the sole shape memory layer 30 into a shape that follows the shape of the inner bottom surface of the footwear 1 (the shape of the upper surface 40a of the insole layer 40), the sole shape memory layer covers the entire surface of the wearer's sole. 30 can be arranged. Therefore, the sole of the wearer can be received by the surface composed of the sole shape memory layer 30. Therefore, the sole shape memory layer 30 can be deformed in a state of more accurately following the shape of the sole of the wearer, thereby making the footwear 1 capable of more effectively dispersing the body pressure of the wearer. Can be done.

Next, the footwear 2 according to the second embodiment of the present invention will be described with reference to FIG. 7. In the footwear 2 according to the second embodiment, those having the same function as the footwear 1 described above are given the same number, and detailed description thereof will be omitted.

The footwear 2 according to the second embodiment of the present invention is a so-called heel shoe for women. As shown in FIG. 7 (c), in the footwear 2, the sole shape memory layer 30 is arranged in the anterior region P on the toe side of the metatarsal bone, and the posterior region Q on the heel side of the metatarsal bone. Is configured not to be provided with the sole shape storage layer 30. Further, the sole shape memory layer 30 is configured to have a shape that follows a part of the shape of the inner bottom surface of the footwear 2 (the shape of the upper surface of the insole layer (not shown)).
In the present invention, "the sole shape memory layer is configured to have a shape that conforms to the shape of the inner bottom surface of the footwear" means that the sole shape memory layer 30 is thus one of the shapes of the inner bottom surface of the footwear 2. It also includes a configuration in which the shape conforms to the portion, and a configuration in which the sole shape memory layer 30 is provided only in a part of the foot placement region as in the second embodiment is also within the scope of the present invention. It includes.

With such a configuration, as shown in FIG. 7B, in heel shoes, since most of the weight of the wearer is applied to the front region P, the heel shoes are worn in the front region P. The footwear 2 can be provided with a custom-made insole that follows the shape of the sole of the person's foot, and can be a footwear 2 having an excellent fit and wearing feeling. In addition, it is possible to prevent the legs from shifting back and forth and left and right when walking. In addition, the wearer's body pressure can be efficiently dispersed. Therefore, it is possible to reduce the burden on the wearer's feet, ankles, knees, etc., and thereby the footwear 2 can effectively suppress the onset of fatigue, low back pain, and stiff shoulders.
In the second embodiment, the sole shape memory layer 30 is provided only in the front region P of the heel shoe, but the configuration is not necessarily limited to such a configuration, and the heel shoe is also described above. As in the first embodiment, the sole shape memory layer 30 may be provided in the entire foot resting area.

The present invention will be further described below with reference to examples. The present invention is not limited to these examples.
Sheet type pressure distribution measuring instrument (XSENSOR Technology (XSENSOR Technology)
Examples 1 and 2 and Comparative Examples 1 to 4 under the following conditions using (Corporation)).
The pressure distribution was measured. The results are shown in Table 1. In each unit in Table 1, the load is N, the area is cm ² , the pressure is mmHg, and the dispersion is S ² .

[Example 1]
A latex sponge sheet having a thickness of 3 mm, a low-resilience urethane sheet having a thickness of 4 mm (the elastic modulus is smaller than that of the latex sponge sheet), and a sheet-like warm shape memory body having a thickness of 1 mm are arranged in the order of description. A three-layer sheet laminated from below is attached to the entire surface of a foot mounting area in a pump wooden mold as in the first embodiment via an adhesive.
[Comparative Example 1]
A sheet-shaped warm-feeling shape memory body having a thickness of 1 mm (the material is the same as that of Example 1) is applied to the entire surface of the foot resting area in the same pump wooden pattern as that of Example 1 via an adhesive. The pasted one.
[Comparative Example 2]
A latex sponge sheet having a thickness of 3 mm (the material is the same as that of Example 1) is attached to the entire surface of the foot resting area in the same pump wooden mold as in the first embodiment via an adhesive.

[Example 2]
A latex sponge sheet having a thickness of 3 mm, a low-resilience urethane sheet having a thickness of 4 mm (the elastic modulus is smaller than that of the latex sponge sheet), and a sheet-shaped warm-feeling shape storage body having a thickness of 1 mm are arranged in the order of description. A three-layer sheet laminated from below is attached to the anterior region on the toe side of the metatarsal bone in the wooden mold of the heel shoe as in the second embodiment via an adhesive.
[Comparative Example 3]
A sheet-shaped warm-feeling shape memory body having a thickness of 1 mm (the material is the same as that of Example 2) is placed in the anterior region on the toe side of the metatarsal bone in the same heel shoe wooden pattern as in Example 2 above. Attached to the heel via an adhesive.
[Comparative Example 4]
A latex sponge sheet having a thickness of 3 mm (the material is the same as in Example 2) is placed in the anterior region on the toe side of the metatarsal bone in the same heel shoe wooden pattern as in Example 2 above with an adhesive. And pasted.

From the results in Table 1, it can be seen that the body pressure of the wearer of the footwear can be effectively dispersed by adopting the structure of the present invention (the structure of Example 1 and Example 2).

The footwear of the present invention is useful in the field of footwear industry because it can be easily fitted to the wearer's foot, has an excellent wearing feeling, and can effectively disperse the wearer's body pressure. , Industrial applicability is great.

1 Footwear 1a Foot insertion space 2 Footwear 2a Foot insertion space 10 Upper 20 Insole layer 20a Top surface 30 Sole shape memory layer 31 Warm shape memory body layer 32 First elastic material layer 33 Second elastic material layer 40 Insole layer 40a Top surface 50 Outer sole F Foot P Front area Q Rear area S Through hole U Sole shape

Claims (4)

The footwear is provided with a sole shape memory layer capable of memorizing the sole shape of the wearer in the foot resting area above the outer sole, and the sole shape memory layer is the body temperature and own weight of the wearer. The shape of the sole of the foot is deformed into the shape of the sole of the foot, and the shape of the sole of the foot after deformation is formed by a warm-feeling shape memory body that can be stored under a predetermined temperature. It is composed of a first elastic material layer to be laminated and a second elastic material layer to be laminated immediately below the first elastic material layer, and the elastic modulus of the first elastic material layer is the second. Footwear characterized by being smaller than the elastic modulus of the elastic layer. The footwear according to claim 1, wherein the warm-feeling shape memory layer is provided with a plurality of through holes penetrating in the thickness direction. The footwear according to claim 2, wherein the through hole has a shape extending in a direction orthogonal to the longitudinal direction of the warmth shape memory layer. The footwear according to any one of claims 1 to 3, wherein the sole shape memory layer is formed in a shape that conforms to the shape of the inner bottom surface of the footwear.

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