JP2932370B2 - Insoles and shoes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe insole and a shoe, and more particularly, to a structure for buffering an impact generated during walking or running and for efficiently reducing moisture inside the shoe. The present invention relates to a shoe insole and a shoe. Here, the insole of the shoe refers to the one that is laid on the insole of the shoe which has been manufactured, and the insole of the shoe refers to the one provided by bonding or the like on the upper surface of the shoe in the shoe manufacturing process. It shall be.

[0002]

2. Description of the Related Art Normal walking of normal persons, walking and running such as walking or jogging for the purpose of health promotion, rehabilitation such as walking training for injured persons, and walking of physically handicapped persons (hereinafter referred to as "moving"). At the time of walking (collectively referred to as "walking"), it is desired to buffer the impact received by the user so as not to cause any trouble in the heel, knee, waist and the like.

[0003] In order to cushion the impact of walking, a shoe sole, an insole, or an insole made of an elastic synthetic resin or the like having a substantially uniform thickness is conventionally used. Also, in order to buffer the impact of the heel when touching down,
There is also known a tube in which a gas such as air is enclosed so as to surround the periphery of the heel of the shoe sole.

[0004] On the other hand, in order to prevent foot stuffiness, etc.,
As disclosed in Japanese Patent Publication No. 8-8310, a plurality of recesses are provided intermittently over a heel portion of a shoe insole main body and an arch portion connected thereto, so that air flows into and out of a shell. Insoles are also known. In this shoe insole, the dent always forms a gap between itself and the cap, and when pressed by the wearer's heel, the dent greatly shrinks and deforms, thereby covering the air in the gap with the cap. When the wearer's foot heel does not compress the air, the air in the cap is returned to the gap.

[0005]

The impact that the wearer receives is large when the wearer steps on the foot and the heel first touches the ground. In the case where the insole is formed to an almost uniform thickness,
Since the sole of the shoe, the insole, or the heel of the insole is formed to have a thickness substantially equal to that of the toe, there is a problem that the cushion does not have a sufficient cushioning capacity.

Further, among the above-mentioned conventional techniques, the one in which a tube filled with gas such as air is provided around the heel portion of the sole of the shoe has a complicated structure and has a hole in the tube. Has a problem that a buffer effect cannot be expected at all.

Further, among the above-mentioned conventional techniques, Japanese Utility Model Laid-Open No.
In the insole for shoes disclosed in 8-8310,
Due to the presence or absence of compression by the wearer's foot heel, the dent around the heel is elastically deformed to allow air to flow between the gap and the cover, so that sufficient ventilation into the cover cannot be expected. Met. In order to increase the elastic deformation of the dent around the heel for the purpose of securing a sufficient ventilation volume into the shell, the elasticity of the insole itself must be reduced.
Furthermore, since the heel portion is formed to have a thickness substantially equal to that of the toe portion, there is a problem that it is not possible to sufficiently absorb the impact that the wearer's foot heel receives when touching the ground.

In addition, the above-mentioned conventional technology has a structure that allows the user to take a correct posture, and is particularly useful when a physically handicapped person who has difficulty in walking, who has a problem with the legs, walks. However, there have been no shoes or insoles provided with means having a buffering action. Furthermore, in the conventional technology, an arch corresponding to the arch of the insole to be inserted is formed on the inner wall of the arch corresponding to the arch of the shoe, and an unnecessary bulge is formed in the inner shape, and the arch of the sole of the user's foot is removed. There was a problem that pressure might be applied.

The present invention has an excellent cushioning effect, can extremely effectively reduce the moisture inside the shoe due to sweating of the foot, etc., and allows the user of the shoe to take a correct posture. It is an object of the present invention to provide a shoe insole and shoes having a structure that assists walking when a physically handicapped person walks and that includes means having a buffering action.

[0010]

In order to achieve the above object, the shoe insole according to the first aspect of the present invention is made of synthetic resin having elasticity, and is provided from a portion corresponding to an arch to a rear end of a heel portion. It is formed with a gradually increasing thickness toward the bottom, a concave portion is formed on the back surface extending from the arch portion to the heel portion, a ventilation portion communicating the concave portion and the upper surface where the sole contacts is provided, a ventilation portion is provided on the toe portion, Means are provided for allowing air in the concave portion to flow to the upper surface of the toe portion provided with the ventilation portion, and the interval in the width direction of the back surface opening of the concave portion is wider than the interval in the width direction of the upper bottom surface. The recess is formed so that the side wall of the recess is inclined with respect to the vertical line, and a groove-like recess is formed between the recess and the rear edge of the heel. is there.

In order to achieve the above object, the insole according to the second aspect of the present invention is characterized in that, in the first aspect of the present invention, the insole is provided at least on the periphery of the back surface of the heel with the inner peripheral wall of the shoe. Is formed with a notch forming an air gap.

[0012] In order to achieve the above object, a shoe according to claim 3 of the present invention is characterized in that an insole provided on the shoe sole has:
It is made of synthetic resin having elasticity, and is formed by gradually increasing the thickness from the corresponding portion of the arch to the rear end of the heel portion, a concave portion is formed on the back surface extending from the corresponding portion of the arch to the heel portion, and the upper surface where the concave portion and the sole contact. There is a ventilation section that communicates with
A ventilation portion is provided on the toe portion, and means is provided for allowing air in the concave portion to vent to the upper surface of the toe portion provided with the ventilation portion. The side wall of the concave portion is formed so as to be inclined with respect to the vertical line so as to be wider than the widthwise interval of the bottom surface, and a groove-shaped concave portion is formed between the concave portion and the heel rear edge. It is characterized by having.

In order to achieve the above object, a shoe according to a fourth aspect of the present invention is the shoe according to the third aspect, wherein at least the inner peripheral wall of the shoe is provided on at least the periphery of the back surface of the heel portion of the insole. Is formed with a notch forming an air gap.

In the shoe insole according to the first aspect of the present invention, the thickness of the heel portion is gradually increased from the corresponding portion of the arch to the rear end toward the rear end. When used by inserting and laying on the insole, the front slope is formed so that the position of the heel is higher than the toe,
The user is in a posture to stretch his back. Also,
The whole body leans forward, and its center of gravity moves forward. In particular, when the physically handicapped person walks, he or she is encouraged to carry his / her feet in the forward direction, thereby assisting walking. When the user walks, the heel of the stepped foot first comes into contact with the ground, causing the load to be maximized and generating an impact, but the heel of the insole made of thick synthetic resin with elasticity This impact is cushioned by elastic deformation in the thickness direction. At this time, since the load is received in a state where the ventilation portion of the concave portion is closed by the sole, the volume of the concave portion is contracted, and the air inside the concave portion is sent to the upper surface through the ventilation portion of the toe portion. By forming the side wall of the concave portion such that the widthwise interval of the back surface opening is wider than the widthwise width of the upper bottom surface, the back surface opening is deformed so as to expand when subjected to a load, The heel where the recess is formed will be easily deformed, and therefore, without softening the hardness of the insole,
It maintains a moderate hardness that can support the weight of the shoe user, and improves the efficiency of sending air to the upper surface of the toe due to the contraction of the volume of the recess. The groove-shaped dent formed between the concave portion and the rear edge of the heel portion serves as a buffer portion for buffering the impact of the heel portion generated when the user steps on the foot and walks on the heel. Function as

In the shoe insole according to the second aspect of the present invention, a space is formed between the inner peripheral wall of the shoe and the shoe insole by being laid on the shoe insole. This gap does not hinder the elastic deformation in the thickness direction of the heel of the insole when receiving a load from the foot, and cushions the impact by compressing the air in the gap. , Heels, knees, hips, etc. can be protected, and since the area in contact with the midsole of the shoe is smaller than the area in contact with the sole, the weight of the user can be concentrated without dispersing, Walking can be done easily and it is hard to get tired.

Also, in the shoe according to the third aspect of the present invention, the heel portion is gradually increased in thickness from the corresponding portion of the arch to the heel portion toward the rear end, so that the position of the heel is higher than the toe. As the front slope is formed on the midsole of the shoe so that the height is higher, the user is in a posture of stretching the back. In addition, the entire body leans forward, and the center of gravity moves forward. In particular, when the physically handicapped person walks, he or she is encouraged to carry his / her feet in the forward direction, thereby assisting walking. When the user walks, the heel of the stepped foot first comes into contact with the ground, and the load is maximized to generate an impact.However, the heel of the insole made of thick synthetic resin with elasticity is This impact is cushioned by elastic deformation in the thickness direction. At this time, since the load is received in a state where the ventilation portion of the concave portion is closed by the sole, the volume of the concave portion is contracted, and the air inside the concave portion is sent to the upper surface through the ventilation portion of the toe portion. By forming the side wall of the concave portion such that the widthwise interval of the back surface opening is wider than the widthwise width of the upper bottom surface, the back surface opening is deformed so as to expand when subjected to a load, The heel portion with the concave portion is easily deformed, and therefore, maintains a moderate hardness capable of supporting the weight of the shoe user without softening the hardness of the insole, and the volume of the concave portion is shrunk. This improves the efficiency of sending air to the upper surface of the toe. The groove-shaped dent formed between the concave portion and the rear edge of the heel portion serves as a buffer portion for buffering the impact of the heel portion generated when the user steps on the foot and walks on the heel. Function as

In the shoe according to the fourth aspect of the present invention, a gap is formed between the inner peripheral wall of the shoe and the shoe sole by being provided on the upper surface of the shoe sole in the shoe manufacturing process by bonding or the like. This gap does not hinder the elastic deformation in the thickness direction of the heel part of the midsole when receiving a load from the foot, and cushions the impact by compressing the air in the gap. , Heels, knees, hips, etc. can be protected, and the area in contact with the sole of the shoe's midsole is smaller than the area in contact with the sole of the shoe. You can walk easily and it is hard to get tired.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a shoe insole according to the present invention will be described with reference to FIGS. In the drawings, the same reference numerals represent the same or corresponding parts.

The insole 5 of the shoe according to the present invention is generally made of synthetic resin having elasticity, and is formed so as to gradually increase in thickness from the corresponding portion of the arch 5b toward the rear end of the heel portion 5c. A concave portion 9 is formed on the back surface extending from the heel portion 5c to the heel portion 5c, a ventilation portion 10 communicating the concave portion 9 with the upper surface where the sole contacts is provided, a ventilation portion 11 is provided on the toe portion 5a, and air in the concave portion 9 Means are provided for allowing ventilation to the upper surface of the toe portion 5a provided with the ventilation portion 11, so that the widthwise interval of the back surface opening of the recess 9 is wider than the widthwise interval of the upper bottom surface. The side wall 9a of the concave portion 9 is formed so as to be inclined with respect to a vertical line,
A groove-shaped recess 18 is formed between the recess 9 and the rear edge of the heel. Also, the insole 5 according to the present invention,
A notch 15 forming a gap 16 between the heel portion 5c and the inner peripheral wall of the shoe 1 is formed at least on the periphery of the back surface of the heel portion 5c.

FIG. 1 is a view showing a cross section in a longitudinal direction of a shoe with an insole according to the present invention inserted therein. The shoe 1 has a shell 2 and a sole 3. An insole 5 according to the present invention, which is formed by fixing a flat plate-shaped insole 4 on the upper surface with an adhesive or the like, is inserted into the shoe 1 to form the insole 4. It is used with it laid on top. The insole 5 is, for example, a molded body 6 having microscopic bubbles inside an elastic synthetic resin such as ethylene vinyl acetate copolymer (hereinafter, referred to as EVA), and adhered over the entire upper surface of the molded body 6. And a skin 7 made of a permeable cloth or the like.

FIG. 2 is a view showing the back surface of the insole 5 according to the present invention. The insole 5 is moved from the front to the back, a toe portion 5a, an arch portion 5b located in the middle, and a rear portion 5b. When divided into the heel portion 5c and the heel portion 5c, the toe portion 5a is formed in a thin plate shape, and a portion extending from the arch portion 5b to the heel portion 5c is a boundary between the toe portion 5a and the arch portion 5b in this embodiment. As shown in FIG. 1, an inclined surface 8 is formed so as to gradually increase in thickness from the rear to the rear end of the heel portion 5c and to have a heel height. The substantial height h (see FIG. 1) of the upper surface of the toe and the heel is 15 mm to 35 mm
It is set in the range of about. The hardness of the molded body 6 is set in the range of 45 to 85 degrees in terms of rubber hardness, preferably about 60 to 70 degrees. Here, the rubber hardness was measured by pressing a stylus having a spherical tip with a diameter of 5.08 mm against the surface of the sample with the force of a spring to give a deformation, and the resistance of the sample and the force of the spring were balanced. It is measured by a rubber hardness tester that measures hardness based on the indentation depth of the indenter in the state. 0 when the needle height is 2.54mm
When the indentation depth is 0 mm, the hardness is set to 100, and the interval is set at regular intervals, and the indentation depth is measured. The rubber hardness tester has a spring load of 5
When the weight is 5 g, the rubber hardness is 0 degree, and when the weight is 855 g, the rubber hardness is 100 degrees. The portion where the thickness starts to increase is not limited to the boundary between the toe portion 5a and the arch portion 5b, but may be the center of the arch portion 5b or the arch portion 5b and the heel portion 5b.
It may be a boundary with c. And the substantial height h of the heel from the part where the thickness starts to increase and the toe
Is selected arbitrarily according to the purpose and size of the shoe, or the required cushioning performance, hardness of the molded body 6, and the like. In addition, as shown in FIG. 3, the shape of the inclined surface 8 is formed in a curved shape so as to match the shape of the sole.

As shown in FIG. 2, a concave portion 9 extending in the longitudinal direction of the shoe is provided on the back surface of the inclined surface 8 extending between the arch portion 5b located in the middle of the insole 5 and the heel portion 5c located behind.
In this embodiment, as shown in FIGS. 1 and 3, a ventilation hole 10 penetrating through the concave portion 9 and the inclined surface 8 is formed as a ventilation portion. As shown in FIG. 3, the side wall 9a of the concave portion 9 is formed such that the interval in the width direction of the insole back surface opening is wider than the interval in the width direction of the upper bottom surface (ceiling surface). In this embodiment shown in FIG. 1, a case where four vent holes 10 are formed in one concave portion 9 having a uniform depth has been described, but the present invention is not limited to this. And the number of recesses 9 and vents 10 to be formed can be set as necessary, and the depth of the recesses can be gradually changed. Furthermore, as a ventilation part, a ventilation hole 1
For example, a cut may be provided instead of 0 so that the concave portion 9 and the upper surface where the sole contacts can communicate with each other to achieve the purpose of ventilation.

As shown in FIGS. 1 and 2, the toe portion 5a of the insole 5 is provided with a ventilation hole 11 as a ventilation portion which penetrates the upper surface and the back surface. As means for communicating the recess 9 and the vent hole 11 of the toe portion 5a in a permeable manner,
In the case of this embodiment, a linear groove 12 is formed between the concave portion 9 and the vent hole 11. When the insole 5 is inserted into the shoe 1 and laid on the upper surface of the insole 4, the recess 9 forms a space 13 by the upper surface of the insole 4, and the groove 12 forms an air passage 14 (FIG. 1). The air in the space 13 is supplied to the air holes 10 and the air passages 14.
The ventilation hole 11 communicated with the inside of the shoe 1 allows ventilation.

As shown in FIG. 2 and FIG. 3, the periphery of the bottom of the insole 5 (the lower corner in the cross section) from the arched portion 5b to the heel 5c gradually decreases in width from the upper surface to the rear surface. Notch 1 from the side wall to the back
5 are formed. As a result, a gap 16 is formed in a substantially U-shape around the heel portion between the inner wall of the cap 2 of the shoe 1, the insole 4, and the insole 5 (see FIGS. 1 and 3). . The shape of the notch 15 may be any shape such as a straight line or an arc as long as the space 16 can be formed around the heel. The formation of the gap 16 does not hinder the elastic deformation of the insole 5 when receiving a load caused by walking of the user, and compresses the air in the gap 16, so that the cushioning action of the impact is achieved. Is better. Also, notch 1
By forming 5, the width in contact with the midsole 4 of the shoe 1 becomes narrower than the width of the inclined surface 8 in contact with the sole, so that the weight of the user is concentrated on the shoe without being dispersed, and walking is facilitated. You can do it. The notch 15 can be cut off at the bottom edge after the molded body 6 is formed, or can be formed such that the bottom edge is cut off in advance.

Further, the insole 5 of the shoe according to the present invention comprises:
As shown in FIG. 2, an abutment portion 17 which is larger than the notch 15 is formed on the rear surface of the corresponding portion 5 b of the arch so as to be continuous from the notch 15. Generally, a commercially available shoe 1 is configured such that the width of the shoe sole at a portion corresponding to the arch is narrowed so as to be in close contact with the sole of the user, and the shell 2 surrounds the arch of the sole. When the shoe insole 5 according to the present invention is inserted into the shoe 1, as shown in the figure, the arch portion 5 b of the insole 5 overlaps with the shell 2 configured to wrap the arch of the sole. In other words, the formation of the edge portion 17 prevents the insole 5 from unnecessarily bulging and compressing the arch of the sole of the user, and is suitable for most shoes 1 on the market. be able to.

Further, as shown in FIGS. 1 and 2, between the concave portion 9 on the back surface of the insole 5 and the edge of the notch 15 at the rear end of the heel portion, as shown in FIGS. A groove-like recess 18 is formed. The side wall of the recess 18 is
It is desirable to form the film so as to be inclined with respect to the vertical line so that the width is temporarily increased toward the back surface similarly to the side wall 9a.

When walking using the shoe in which the insole 5 configured as described above is inserted, when the shoe user steps on the foot and the heel first touches the ground, the load on the shoe user and By the impact due to the reaction force, the heel portion 5c of the molded body 6 formed to be substantially thicker than the toe portion 5a of the insole 5 is elastically deformed in the thickness direction. Further, in addition to the elastic deformation in the thickness direction of the heel portion 5c of the molded body 6, the dent 18 formed between the concave portion 9 and the edge of the notch 15 at the rear end of the heel portion is deformed so as to expand. In addition, the shock of the heel of the shoe user is naturally absorbed. The heel portion 5c is formed by inclining the side wall 9a of the concave portion 9 with respect to the vertical line so that the interval in the width direction of the insole back surface opening is wider than the interval in the width direction of the upper bottom surface. When subjected to an impact, as shown by an arrow X in FIG. 5, the opening of the concave portion 9 is deformed so as to expand, so that the hardness of the molded body 9 itself formed by, for example, EVA is not softened, so that the shoe The volume of the space 13 can be easily contracted while maintaining an appropriate hardness that can support the weight. At this time, the ventilation hole 10 of the concave portion 9 is closed by the heel of the sole of the shoe user. In this state, the concave 9
And the space 1 formed by the upper surface of the midsole 4 of the shoe 1
When the volume of the space 3 contracts, the air in the space 13 is
And the air passage 14 formed by the upper surface of the midsole 4 of the shoe 1 and the toe portion 5 through the ventilation hole 11 of the toe portion 5a.
a is ventilated to the upper surface of a.

Further, the formation of the gap 16 allows the heel portion 5c of the insole 5 to elastically deform as shown by an arrow Y in FIG. 16, the elastic deformation is not hindered, and the air in the gap 16 is compressed, so that the shock absorbing effect is excellent. Further, in addition to the ventilation due to the contraction of the volume of the space 13, a gap 16 formed between the inner wall of the upper 2 of the shoe 1 and the insole 4 and the insole 5 by the notch 15.
Since the air inside is ventilated to the toe portion 5a through the recess 18, the ventilation efficiency is further improved. further,
By forming the notch 15, the width in contact with the midsole 4 of the shoe 1 becomes narrower than the width of the inclined surface 8 in contact with the sole, so that the weight of the user is concentrated on the shoe without being dispersed and walking. Can be done easily.

On the other hand, when the sole of the shoe user touches the ground, and then the heel floats and kicks backward with the touched toe, the toe on the sole of the shoe user closes the ventilation hole 11, The heel of the sole of the shoe user is separated from the ventilation hole 10 of the concave portion 9 and opened, and as shown in FIG. 3, the opening of the concave portion 9 returns to the original position, and the heel portion 5c is returned to the original state in the thickness direction. Elastic expansion, space 1
The volume of 3 returns. Therefore, the air for ventilating the upper surface of the toe 5a at the time of the next step flows into the space 13 via the vent hole 10. By the ventilation such as the respiratory action described above, the moisture in the shoe 1 due to the sweating of the user and the like is reduced, and the shoes 1 are not stuffy.

Further, when the shoe with the insole 5 according to the present invention inserted is used, the thickness is gradually increased so that the heel becomes higher from the corresponding portion of the arch to the rear end. As a result, when inserted in the finished shoe and used on the midsole, the front slope is formed so that the position of the heel is higher than the toe, so the user should stretch his back Posture is taken. In addition, the whole body leans forward, and the center of gravity moves forward. In particular, when a physically handicapped person walks, he or she is encouraged to carry his / her feet in the forward direction, which is helpful in walking.

Although the groove 12 has been described in this embodiment by an example in which the groove 12 is formed in a linear shape separately from the recess 9, the present invention is not limited to this, and as shown in FIG. It may be formed in a shape that matches the shape of the toe portion 5 a of the floor 5, and may be formed so as to be continuous from the recess 9. In this case, a support portion 12a such as a rib is formed in the groove 12 so as to be flush with the back surface of the molded body 6 so that the air passage 14 is not blocked by the load of the user, and
It is preferable to form the insole 5 so as not to hinder the bending of the insole 5 during walking.

Next, an embodiment of the shoe according to the present invention will be described with reference to FIGS. The same parts as those of the embodiment of the invention relating to the shoe insole described above are denoted by the same reference numerals, and description thereof will be omitted.

In the shoe 21 according to the present invention, the middle sole 25 provided on the sole 23 is made of an elastic synthetic resin, and the thickness gradually increases from the arched portion 25b toward the rear end of the heel portion 25c. It is formed more and the arch is equivalent to 25
A concave portion 9 is formed on the back surface extending from b to the heel portion 25c, a ventilation portion 10 communicating the concave portion 9 with the upper surface where the sole contacts is provided, a vent portion 11 is provided on the toe portion 25a, and air in the concave portion 9 is provided. The toe portion 2 provided with the ventilation portion 11
Means are provided to allow ventilation to the upper surface of the concave portion 5a, and the side wall 9a of the concave portion 9 is formed in a vertical line so that the widthwise interval of the back surface opening of the concave portion 9 is wider than the widthwise interval of the upper bottom surface. The recess 9 is formed so as to be inclined with respect to the recess 9.
A groove-shaped recess 18 is formed between the heel portion 25c and the rear edge of the heel portion 25c. Note that the shoe 21 in this embodiment
Is formed so that the width of the arch portion 25b of the insole 25 is narrow so as to be in close contact with the sole of the user, and the cap 2 covers the arch of the sole.

The insole 25 is formed of, for example, a molded body 6 made of EVA or the like having fine-diameter bubbles inside an elastic synthetic resin, and the air permeability adhered over the entire upper surface of the molded body 6. And an outer skin 7 having the same. Insole 25
The slope 8 is formed so as to gradually increase in thickness from the corresponding portion of the arch 25b toward the rear end of the heel portion 25c and to have a heel height, and the back surface of the inclined surface 8 extending between the corresponding portion of the arch 25b and the heel portion 25c. Is provided with a concave portion 9 extending in the longitudinal direction of the shoe, and a ventilation hole 10 penetrating through the concave portion 9 and the inclined surface 8 is formed.

An air hole 11 penetrating the upper surface and the rear surface is provided in the toe portion 25a of the midsole 25, and a linear groove 12 is formed between the concave portion 9 and the air hole 11. When the insole 25 is provided on the upper surface of the shoe sole 23, the concave portion 9 forms the space 13 by the upper surface of the shoe sole 23, and the groove 12 forms the air passage 14. The space 13 can be ventilated with the inside of the shoe 21 by the vent 10 and the vent 11 communicated through the air passage 14. Further, between the recess 9 on the back surface of the inner sole 25 and the edge of the notch 15 at the rear end of the heel, a groove-shaped recess 18 which functions as a buffer and is shallower than the recess 9 is formed.

When walking using the shoe 21 configured as described above, when the shoe user steps on the foot and the heel first touches the ground, the load due to the shoe user and the impact due to the reaction force are applied. The heel portion 25c of the molded body 6 formed to be substantially thicker than the toe portion 25a of the inner sole 25 is elastically deformed in the thickness direction, and the dent 18 is expanded without completely contacting the shoe sole 23. Due to the deformation, the impact can be efficiently buffered. Then, the side wall 9a of the concave portion 9 is formed to be inclined with respect to the vertical line so that the interval in the width direction of the inner bottom back surface opening portion is wider than the interval in the width direction of the upper bottom surface (see FIG. 3). When the heel portion 25c receives an impact, the opening of the concave portion 9 is deformed so as to be easily expanded (see FIG. 5), so that the shoe 9 can be used without softening the hardness of the molded body 9 itself formed by, for example, EVA. The volume of the space 13 can be easily contracted while maintaining appropriate hardness that can support the weight of the individual. At this time, the vent 1 of the recess 9
0 is closed by the heel of the sole of the shoe user, so that the air in the space 13 is
Air passage 14 formed by the upper surface of the toe 5
The air is efficiently ventilated to the upper surface of the toe 5a through the vent hole 11a.

Further, since the gap 16 is formed, when the heel portion 25c of the midsole 25 is elastically deformed when the load due to the walking of the user is received, the heel portion 25c swells into the gap 16, so that the elastic deformation is reduced. There is no hindrance. Then, in addition to the ventilation due to the contraction of the volume of the space 13, the air in the gap 16 formed between the inner wall of the upper 22 of the shoe 21 and the sole 23 and the inner sole 25 by the notch 15 is recessed 18. Therefore, the air is efficiently ventilated to the toe portion 25a via the toe. Further, by forming the notch 15, the width in contact with the shoe sole 23 is narrower than the width of the inclined surface 8 in contact with the sole, so that the weight of the user is concentrated on the shoe without being dispersed, and the user walks. It can be done easily.

[0038]

According to the shoe insole according to the first aspect of the present invention, the insole is formed by gradually increasing the thickness so that the heel becomes higher from the corresponding portion of the arch toward the rear end. The front slope is formed so that the position of the heel is higher than the toe when inserted into the shoe of the product and laid on the midsole, so that the user takes a posture that stretches the back be able to. In addition, since the whole body leans forward, the center of gravity moves forward, which in particular facilitates walking in the forward direction when a physically handicapped person walks, which can assist walking and reduce fatigue. Can be. When the heel of the stepped foot touches the ground when the user walks, the load is maximized and the impact occurs when the heel of the stepped foot first touches the ground, but a synthetic material having a thickly formed elasticity By elastically deforming the heel of the insole made of resin in the thickness direction,
This impact can be buffered. At this time, since the load is received in a state where the ventilation portion of the concave portion is closed by the sole, the volume of the concave portion is contracted, and the air inside the concave portion can be sent to the upper surface through the ventilation portion of the toe portion. By forming the side wall of the concave portion so as to be inclined with respect to the vertical line so that the interval in the width direction of the back surface opening portion of the concave portion is wider than the interval in the width direction of the upper bottom surface, the heel portion in which the concave portion is formed Can be easily deformed, and therefore, it is possible to maintain an appropriate hardness capable of supporting the weight of the shoe user without softening the hardness of the insole, and furthermore, the air due to the contraction of the volume of the concave portion. Of the toe to the upper surface can be improved. Further, the groove-shaped recess formed between the concave portion and the rear edge of the heel portion further buffers the impact of the heel portion generated when the user steps on the foot and walks on the heel. Can be.

According to the shoe insole according to the second aspect of the present invention, a space is formed between the inner peripheral wall of the shoe and the shoe sole by being laid on the insole of the shoe. When receiving the load of, the elastic deformation in the thickness direction of the heel of the insole will not be hindered, and the air in the gap will be compressed to cushion the impact, and the heel, knee, and waist Etc., and since the area in contact with the insole is smaller than the area in contact with the sole, the weight of the user can be concentrated without dispersing, making walking easier. It is hard to be tired.

According to the shoe of the third aspect of the present invention, the heel portion is formed so as to gradually increase in thickness from the corresponding portion of the arch to the heel portion toward the rear end, so that the position of the heel is higher than the toe. Since the front slope is formed on the midsole of the shoe so that the height is higher, it is possible to make the user take a posture of stretching the back. In addition, the whole body leans forward, and the center of gravity moves forward. In particular, when the physically handicapped person walks, it is urged to carry his / her feet in the forward direction, and walking can be assisted. When the heel of the stepped foot touches the ground when the user walks, the heel of the midsole made of a synthetic resin having a large elasticity is elastically deformed in the thickness direction to cushion this impact. be able to. At this time, the volume of the concave portion is reduced by receiving a load in a state where the ventilation portion of the concave portion is closed by the sole, so that the air inside the concave portion can be sent to the upper surface through the ventilation portion of the toe portion. By forming the side wall of the concave portion such that the widthwise interval of the back surface opening is wider than the widthwise width of the upper bottom surface, the back surface opening is deformed so as to expand when subjected to a load, It is possible to easily deform the heel portion in which the concave portion is formed, and therefore, it is possible to maintain a moderate hardness capable of supporting the weight of the shoe user without softening the hardness of the insole, and furthermore, the concave portion. The efficiency of sending air to the upper surface of the toe due to the contraction of the volume of the air can be improved. In addition, due to the groove-shaped recess formed between the recess and the rear edge of the heel, the impact of the heel generated when the user steps on the foot and walks on the heel is further cushioned. .

According to the shoe according to the fourth aspect of the present invention, a void is formed between the inner peripheral wall of the shoe and the shoe sole by providing the middle sole on the upper surface of the shoe sole in the shoe manufacturing process. When receiving a load from the foot, without impeding the elastic deformation in the thickness direction of the heel portion of the midsole, the air in the gap is compressed to cushion the impact, the heel,
Knees, hips, etc. can be protected, and the area in contact with the sole of the shoe's midsole is smaller than the area in contact with the sole, so that the user's weight can be concentrated without dispersing, Walking can be done easily and it is hard to get tired.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a shoe insole according to the present invention.

FIG. 2 is a rear view of the insole of the shoe according to the present invention.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged sectional view taken along line BB of FIG. 2;

FIG. 5 is a cross-sectional view showing a state in which a load has been applied and elastically deformed from the state of FIG. 3;

FIG. 6 is a rear view showing another embodiment of the shoe insole according to the present invention.

FIG. 7 is a longitudinal sectional side view of the insole shown in FIG. 6;

FIG. 8 is a longitudinal sectional side view of a shoe according to the present invention.

FIG. 9 is a rear view of the midsole of the shoe shown in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 shoe 3 shoe sole 4 insole 5 insole 5a toe part 5b arch part 5c heel part 8 inclined surface 9 concave part 9a side wall 10, 11 vent hole 12 groove 13 space part 14 air passage 15 notch 16 void 17 edge part Reference Signs List 18 groove-shaped recess 21 shoes 23 shoe sole 25 midsole 25a toe part 25b arch equivalent part 25c heel part

Claims (4)

(57) [Claims] 1. An elastic synthetic resin having a thickness gradually increasing from a corresponding portion of an arch to a rear end of a heel portion, a concave portion is formed on a back surface extending from the corresponding portion of the arch portion to a heel portion, and the concave portion and the foot are formed. A ventilation portion communicating with the upper surface contacted by the back is provided, a ventilation portion is provided on the toe portion, and means for allowing air in the concave portion to vent to the upper surface of the toe portion provided with the ventilation portion is provided. , The back surface opening of the recess
Is wider than the width of the top bottom in the width direction.
So that the side wall of the recess is inclined with respect to the vertical line.
A groove-like recess is formed between the recess and the rear edge of the heel.
Shoe insole, characterized in that there. 2. The shoe insole according to claim 1, wherein a notch is formed at least at a peripheral edge of a back surface of the heel portion so as to form a gap with an inner peripheral wall of the shoe. 3. An insole provided on the sole of the shoe is made of an elastic synthetic resin, and has a thickness gradually increasing from a corresponding portion of the arch to a rear end of the heel portion, and extends from a corresponding portion of the arch to the heel portion. A concave portion is formed on the back surface, a ventilation portion communicating the concave portion and the upper surface where the sole contacts is provided, a ventilation portion is provided on the toe portion, and air in the concave portion is provided on the upper surface of the toe portion provided with the ventilation portion. Means are provided to allow air to flow into the recess, and the gap in the width direction of the back surface opening of the recess is set to the upper bottom surface.
The side wall of the concave portion is wider than the interval in the width direction of
It is formed so as to be inclined with respect to the vertical line, and a groove-shaped depression is formed between the concave portion and the heel rear edge.
Shoes, characterized in that there. 4. The shoe according to claim 3, wherein a notch forming a gap between the inner sole and the inner peripheral wall of the shoe is formed on at least a peripheral edge of the back surface of the heel portion of the midsole.