JP2013017647A - Forward slip preventive insole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insole having versatility to be applied to various kinds of shoes and having a projection for preventing forward slip, wherein the shape of the projection has few risks of giving a user a sense of disorder when the sole is used.SOLUTION: The insole 0101 includes a base 0102 in contact with at least part of the sole of a foot, and the projection 0103 used as held between the big toe and the second toe of the foot. The shape of the projection 0103 as observed from a cross-section approximately parallel to the base is vertically long such that the transverse length of the foot is shorter than the longitudinal length connecting the heel side and the toe side of the foot, and is a teardrop-shape becoming narrower toward the toe side of the foot.

Description

  The present invention relates to an insole used for a shoe, which has a protrusion that can be used between a thumb and an index finger.

  When using a shoe having a high heel, an inclination from the heel side of the foot to the toe side is formed on the inner bottom surface of the shoe, so that the foot may slide forward to the toe side. As a result, the toe of the foot is pressed by the tip of the shoe, or a gap is left on the heel side.

  As means for preventing a pre-slip, for example, a shoe described in Patent Document 1 is proposed in which a shoe cord partition is provided on the shoe itself.

  Alternatively, there is an insole (a product “valgus valgus fit” manufactured by Kowa Co., Ltd.) provided with an elliptical columnar protrusion as in Non-Patent Document 1, as a product for valgus hallux measures.

JP-A-10-155505

http://hc.kowa.co.jp/beautien/gaihanboshi.php

  However, when using a shoe having a umbilical partition on the shoe itself, the user's choice of shoes is limited. Alternatively, an insole with an elliptical columnar protrusion is not shaped along the gap between the toes in order to widen the gap between the toes and forefinger from the viewpoint of the function of measures against hallux valgus, giving a sense of incongruity when used .

  Therefore, an insole that has versatility that can be used for various shoes and that has a protrusion for preventing forward slipping, and the shape of the protrusion requires an insole that is less likely to cause discomfort to the foot during use. Met.

  In order to solve the above problems, the present applicant proposes the following insole.

  That is, as a first invention, an insole having a base in contact with at least a part of a sole and a protrusion that can be used by being sandwiched between a thumb and an index finger, the protrusion being substantially parallel to the base. The main shape observed in a simple cross-section is that the length of the foot in the left-right direction is shorter than the length in the longitudinal direction connecting the heel side of the foot and the toe side, and is long and thin toward the toe side of the foot An insole characterized by a drop shape is proposed.

  As a second aspect of the invention, when the protrusion is used while being sandwiched between the big toe and forefinger, the base has a front edge on the toe side near the middle finger, ring finger, little finger, and the third proximal phalanx. The insole according to the first invention is characterized in that the insole is configured so as to correspond to the middle vicinity of each basic phalanx over the fifth basic phalanx.

  As a third invention, the base is configured to be relatively thin in the vicinity of the second and third metatarsal head corresponding parts, and is configured to be relatively thick in the vicinity of the first and second metatarsal head corresponding parts. The insole according to the first invention or the second invention is characterized in that the insole is provided.

  As a fourth invention, the side shape when the protrusion is viewed from the side is a dolphin dorsal fin shape that gradually increases from the front of the foot toward the rear of the foot. An insole according to any one of the above is proposed.

  As a fifth invention, the base is substantially opposite to the direction in which the sole tries to slide along the movement line at the time of walking with the center of the sole pressure, and / or the direction in which the sole tries to slide when standing still. The insole according to any one of the first to fourth inventions is provided, which is provided with a non-slip pattern for increasing the frictional force between the sole and the insole contact surface in the direction.

  According to a sixth aspect of the present invention, the sole is oriented in a direction in which the sole tries to slide along the movement line at the time of walking centered on the sole pressure, and / or in a direction substantially opposite to the orientation in which the sole tries to slide when standing still. An insole having a non-slip pattern arranged substantially in parallel for particularly increasing the frictional force between the contact surface and the insole contact surface is proposed.

  The insole according to the present invention has versatility that can be used for various shoes, and can prevent a front slip due to a protrusion, and the shape of the protrusion may cause a sense of incongruity to the foot during use. small.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this invention should not be limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof. The first embodiment mainly relates to claim 1 and the like. The second embodiment mainly relates to claim 2 and the like. The third embodiment mainly relates to claim 3 and the like. The fourth embodiment mainly relates to claim 4 and the like. The fifth embodiment mainly relates to claims 5 and 6.
<< Embodiment 1 >>
<Embodiment 1: Overview>

  FIG. 1 is a conceptual perspective view showing an example of the insole of the present embodiment.

  As shown in FIG. 1A, the insole (0101) of this embodiment includes a base (0102) and a protrusion (0103).

  Moreover, in FIG.1 (b), the mode at the time of use of the insole of this embodiment is shown. As shown in this figure, in the insole (0101) of this embodiment, the protrusion (0103) hits the crotch of the finger between the thumb (0105) and the index finger (0106) of the foot (0104). It is used in the state where it is pinched.

The insole of this embodiment is a state where the insole is fixed to the inner bottom surface of the shoe, and the protrusion is sandwiched between the thumb and forefinger so that the heel side of the protrusion abuts against the crotch of the finger. An insole that can be prevented.
<Embodiment 1: Configuration>

The insole according to this embodiment includes a base and a protrusion.
<Insole>

  “Insole” includes both so-called insole and insole.

  In this specification, “insole” refers to a part of footwear that is a finished product, and is assembled in the footwear manufacturing process and cannot be removed.

  In the present specification, the term “insole” refers to an insole that can be attached as a part of footwear in the production process of footwear, or that can be attached to and removed from the finished footwear later as an additional part. Say.

In other words, the “insole” of the present invention may be sold as an “insole” as an integral part of footwear, or as an “insole” attached to the footwear or sold separately from the footwear. There is also.
<Base configuration>

The base is a substantially flat member in contact with at least a part of the sole. The base has a surface on the side in contact with the sole side and a surface on the ground side. The ground side surface of the base comes into contact with the bottom surface of the shoe. The sole or the bottom of the shoe may have irregularities, and the substantially flat shape includes the case where there are irregularities that match the irregularities of the bottom or the sole of the shoe. The base of the insole of this embodiment needs to be fixed to the shoe bottom surface. “Fixed” means that the insole is kept in an appropriate position on the bottom surface of the shoe so that the insole does not slip in the shoe during use.
(Planar shape of base)

  The planar shape when the base is viewed from above may be, for example, the same shape as the inner bottom surface of the shoe. In this case, even if the base is not tightly attached to the shoe, there is little risk of shifting in the shoe, and the base can be fixed to the bottom surface of the shoe. In addition, since the entire sole is in contact with the base, comfort is increased if the base is formed of a material having a buffering effect or a material that absorbs sweat. In addition, since the entire sole touches the base, the slip between the base and the sole is further suppressed. Therefore, the load borne by the protrusion can be relatively reduced.

  Alternatively, the base may be configured to lack at least a part of the toe side. In this case, even if there is a small gap between the toe of the foot and the upper of the shoe, there is no possibility that the toe of the foot becomes tight due to the thickness of the base.

  Alternatively, the base may be configured to lack at least part of the heel side. Specifically, it lacks the second half of the heel side. In this case, in the shoe covered with the upper, the insole is less likely to be visible when the shoe is removed, and the insole is conspicuous and less likely to impair the beauty when the shoe is removed.

Further, when both the toe side and the heel side are lacking, the insole can be used for various shoes regardless of the size of the shoes. However, an area that can be fixed to the extent that the base does not slip in the shoe is required.
(Base material)

  The base material is not particularly limited. For example, it may be the same as the material of the protrusion described later. In this case, by integrally molding the base and the protrusion, there is little possibility that the protrusion will be damaged during separation, such as separation. If transparent material is used, the insole becomes inconspicuous and the design of the shoe is less likely to be damaged.

  The base may be composed of one layer. In this case, the manufacturing process is easy because the step of stacking a plurality of layers is unnecessary. In this case, it is preferable that the material be capable of preventing displacement between the soles and shoes in contact with the base by the action of frictional force and the like.

  The base may be composed of a plurality of layers. As an example of a plurality of layers, it is conceivable to configure the sole layer and the ground layer into two layers.

  The layer on the sole side may be, for example, a layer made of a cloth material, a non-woven fabric, natural leather, synthetic leather or the like so as to be comfortable to touch when in contact with the sole. In particular, when used with bare feet, it is preferable to use a material with good air permeability. As another example of the layer on the sole side, a material that increases the frictional force with the sole may be used. In this case, the force applied to the protrusions described later can be reduced. By reducing the force applied to the protrusions, it is possible to reduce the possibility that the protrusions will be broken, such as separation, and that the toes of the toes sandwiching the protrusions may become painful.

Moreover, what is necessary is just to let the layer by the side of a shoe sole side apply | coat the layer which consists of a raw material with high adhesive force, or the adhesive agent so that an insole itself may not slip | deviate when using it in shoes. It is also conceivable to fix both the shoe and the insole itself with a double-sided tape so that the shoe and the insole itself are not displaced.
(Base hardness)

The base hardness (numerical values measured with a durometer in accordance with JIS K7312, Asker rubber hardness meter C type. Hereinafter, the same applies when the hardness is shown in the present specification) is in the range of 30 to 70 degrees. It is preferable. If the hardness is higher than 70 degrees, the cushioning property is poor, and conversely if the hardness is softer than 30 degrees, the foot will feel depressed when the base is thick, so the comfort is not good. More preferably, the angle is 35 to 65 degrees, and the comfort is particularly good.
(Base surface shape)

The base surface may be provided with, for example, embossing or a groove. In this case, the frictional force between the sole and the base can be increased, and the sole can be further prevented from sliding forward with respect to the insole. A specific shape of the emboss or groove will be described later.
<Structure of protrusion>

The protrusion is a portion that protrudes from the base, and is a portion that can be used by being sandwiched between the thumb and index finger. That is, the protrusion is configured to be sandwiched between the thumb and index finger in a state where the heel side of the protrusion hits the crotch of the finger. This protrusion has a function of preventing the front slip of the foot by supporting the foot that slides forward.
(Planar shape of protrusion)

  2A, 2B, and 2C are views showing an example of the insole of the present embodiment. 2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a cross-sectional view of each cut portion shown in FIG. 2A (a). 2B is a plan view, FIG. 2E is a rear view observed from the heel side direction, and FIG. 2F is a longitudinal sectional view observing each cut portion shown in FIG. 2B (d). FIG. 2C is a partial contour map in which the height of the portion excluding the protruding portion is indicated by contour lines. In addition, the output of FIG. 2C in color will be submitted by the property submission form. With reference to these drawings, the “main shapes of protrusions observed in a cross section substantially parallel to the base” of the insole of the present embodiment will be described.

  Since the protrusion of the insole of this embodiment is used by being sandwiched between the thumb and forefinger, it is better to configure the protrusion so that the shape of the protrusion is the same as that between the thumb and forefinger. The feeling of strangeness given to the finger can be reduced. The planar shape when the gap between the big toe and forefinger is viewed from the top is the middle part between the toe, that is, the crotch part of the finger is composed of a curve, and gradually toward the toes. It is thin and has a drop shape. Therefore, the main shape of the projection of the insole according to the present embodiment observed in a cross section substantially parallel to the base may be a similar drop shape. The “cross section substantially parallel to the base” refers to each cross section when the protrusion is cut in a plane parallel to a plane forming a main part of the surface of the base with the insole placed on a flat desk or the like. The shape “observed with a cross section substantially parallel to the base” refers to a shape when each cross section is viewed from above.

  In addition, the “main” shape in which the protrusions are observed in a cross section substantially parallel to the base means that not all cross sections need to be drop-shaped, and many of the cross-sections have a drop-shaped shape. It means that As an example, the protrusion part (including the vicinity of the middle part of the toe height, including the vicinity of the middle part of the toe height) from the vicinity of the middle part of the toe height has a drop-shaped cross section. Yes, the portion of the projection below the vicinity of the middle part of the toe height (not including the vicinity of the middle part of the toe height; the same applies hereinafter) is a drop-shaped cross section. It is possible that this is not the case. The reason is that the shape in the vicinity of the middle part of the toe height is important in terms of whether or not the toes feel uncomfortable in achieving the effects of the insole of the present embodiment. “Planar shape when viewing the gap between the big toe and forefinger from above” means that the gap between the big toe and the forefinger near the middle of the toe It becomes the shape which observed the part. Therefore, in order to make it difficult to give a sense of incongruity when sandwiched between the big toe and the forefinger, the protrusion of the insole of the present embodiment is arranged so that the toe and the forefinger near the middle part of the height of the toe It is preferable that it is comprised in the same shape as the clearance gap between them. However, in order to prevent the protrusion and the base from being separated and damaged, it is better to connect the base with the base as wide as possible. The shape of the portion observed in a cross section substantially parallel to the base may be various shapes regardless of whether or not the shape is a drop shape.

  The main shape of the projection of the insole according to the present embodiment observed in a cross section substantially parallel to the base is “the length of the foot in the left-right direction is shorter than the length in the longitudinal direction connecting the heel side and the toe side of the foot. In addition, it is a drop-shaped shape that narrows toward the toe side of the foot. This shape will be described. In FIG. 2A (a), the shape observed in the cross section substantially parallel to the base in the vicinity of the middle part of the height of the toe of the protrusion indicated by 0203 is as shown in FIG. 2A (a ′). The length in the left-right direction (0204) is shorter than the length in the vertical direction (0205) connecting the heel side and the toe side of the foot, and is a drop-like shape that becomes narrower toward the toe side of the foot. . `` Near the middle part of the height of the toes '' of the protrusion is a part located at a height near the middle part of the height of the big toe when using the insole of this embodiment in a shoe, In FIG. 2A (b), it is the vicinity of the portion 0210 indicated by the dotted line. In FIG. 2A (a '), the shape observed in a cross section substantially parallel to the base near the middle part of the toe height is shown as a representative example, but the protrusion of the insole of this embodiment is substantially parallel to the base. Many of the shapes observed in the cross-section are similar to the following: `` The length of the foot in the left-right direction is shorter than the length in the vertical direction connecting the heel side of the foot and the toe side, and is on the toe side of the foot. It is a drop-shaped shape that narrows toward you.

  The effect that the protrusion of the insole is vertically long is as follows. When using the insole of this embodiment in shoes, the force which goes to a toe direction will work | function to a protrusion strongly. For this reason, the vertical length of the protrusions needs to be long enough to support the load without falling to the toe side. On the other hand, the length in the left-right direction needs to be short so as not to give an uncomfortable feeling when sandwiched between the big toe and forefinger. From the above points, it is preferable that the protrusion has a configuration having a vertically long shape.

  Further, the fact that the protrusion of the insole is vertically long also has the following effects. That is, by being configured vertically long, the contact area between the big toe and the forefinger increases. Therefore, the frictional resistance between the toes and protrusions is increased, and the foot can be supported over a wide area. For this reason, since the force applied to the crotch portion of the finger can be reduced, it is difficult to cause pain in the crotch portion of the finger. Further, since the frictional resistance is increased due to the large contact area, it is possible to reduce the occurrence of forward sliding with respect to the insole of the sole.

  Next, the droplet shape will be described. As described above, when the gap between the big toe and forefinger is viewed from above, the planar shape is the middle part between the toe, that is, the crotch part of the finger is composed of a curve, and the toe side It gradually becomes thinner toward the surface and becomes a drop shape. Therefore, by making the shape of the protrusions match the shape of the crotch of the finger, the uncomfortable feeling given to the toes can be reduced.

  Moreover, when using the insole of this embodiment in shoes, the crotch part of the finger between the big toe and the forefinger will be in strong contact with the protrusion. For this reason, if the heel side of the projection that comes into contact with the crotch of the finger is too thin, a strong force is applied to a small area, and the crotch of the finger becomes painful, resulting in poor comfort. For this reason, it is preferable that the radius of curvature is configured to a certain extent on the heel side of the protrusion.

On the other hand, in most of the feet that are used to wearing shoes, there are no gaps between the thumb and forefinger, and the fingers are in most cases. For this reason, if the thumb and forefinger are forcibly spread, there is a risk of discomfort. For this reason, it is preferable that the protrusion is configured to become thinner toward the toe side.
(Side shape of protrusion)

  The side shape when the protrusion is viewed from the side is not particularly limited in the present embodiment, but the height of the entire protrusion is preferably configured not to greatly exceed the height of the toes. More preferably, it is configured to be lower than the height of the toes. Even more preferably, the tip of the protrusion is configured not to be observed from the outside with the toe closed.

  The reason is as follows.

  First, in shoes with exposed toes, such as mules and sandals, where the instep is not covered by the upper, if the protrusion exceeds the height of the toe, the protrusion protruding from between the toes It is conspicuous and detracts from the beauty of the feet wearing shoes.

  Also, in shoes where the upper of the foot is covered with the upper, if the height of the entire protrusion is too high, the protrusion may get caught on the upper and cannot be used, or the protrusion will push up the upper and cause an unnatural rise. There is a risk that it may occur in shoes and damage the design.

On the other hand, if the height of the entire protrusion is designed not to greatly exceed the height of the toes, even shoes with designs that expose the toes are shoes with uppers. However, since the possibility of harming the design is small, versatility is increased. Furthermore, if it is configured to be lower than the height of the toes, the possibility of harming the design becomes smaller. Furthermore, if the tip of the protrusion is configured not to be observed from the outside with the toe closed, the possibility of harming the design is further reduced.
(Projection material)

  The material of the protrusion is not particularly limited. For example, the same material as the base may be used.

The use of transparent materials makes them less noticeable and reduces the damage to the shoe design. In addition, if a transparent material is used in combination with the base, the design of the shoe will be further reduced.
(Hardness of protrusion)

The hardness of the protrusions is preferably in the range of 30 degrees to 70 degrees, similar to the base. If the hardness is higher than 70 degrees, there is a high risk of being uncomfortable when pinched between the toes. Conversely, if the hardness is softer than 30 degrees, the force applied to the protrusion cannot be sufficiently supported and the protrusion will bend. There is a risk. More preferably, the angle is 35 to 65 degrees, and the comfort is particularly good. In addition, if the surface of the protrusion that touches the toes is soft and other parts are made hard, it is possible to maintain the strength that the protrusions will not bend while reducing the possibility of giving the toes a sense of incongruity. It becomes.
<Embodiment 1: Effect>

The insole according to the present embodiment has versatility that can be used for various shoes, and can prevent a front slip due to the protrusion, and the shape of the protrusion may cause a sense of discomfort to the foot during use. Is small.
<< Embodiment 2 >>
<Embodiment 2: Overview>

The insole of the present embodiment is characterized by the configuration of the front end edge on the toe side of the base while being based on the insole of the first embodiment. The base of the present embodiment is configured to lack a part on the toe side, that is, a part in contact with the middle finger, the ring finger, and the little finger. With this configuration, even when there is a small gap between the toe of the foot and the upper of the shoe, there is no possibility that the toe of the foot becomes cramped due to the thickness of the base. However, when the toes and the edge of the base come into strong contact with each other, there is a risk that the sole will feel uncomfortable due to the contact of the sole with the step formed between the base and the inner bottom surface of the shoe. Therefore, the insole of the present embodiment is configured such that the relative positional relationship between the toe side front end edge and the foot is less likely to give a sense of discomfort to the sole.
<Embodiment 2: Configuration>

  The insole according to this embodiment includes a base and a protrusion. The insole, base, and protrusion are the same as those described in the first embodiment except for the portions described below.

  The relative positional relationship between the toe-side front end edge of the base of the insole of this embodiment and the foot will be described.

  FIG. 3 is a diagram for explaining the positional relationship between an example of the insole of this embodiment and a foot. “When the protrusion is used by being sandwiched between the thumb and forefinger”, as shown in FIG. 3A, the protrusion of the insole (0301) is placed between the thumb of the foot (0304) and the index finger. (0303) refers to the case where the heel side is used in a state of being pinched so as to hit the crotch of the finger. FIG. 3A shows a state where the insole and the foot of the present embodiment are overlapped when observed in such a usage state.

  The base (0302) of the insole according to the present embodiment is such that the front end edge on the toe side near the middle finger, the ring finger, and the little finger extends from the third proximal phalanx to the fifth proximal phalanx and corresponds to the middle vicinity of each proximal phalanx. It is comprised so that. “The front edge on the toe side near the middle finger, ring finger, and little finger” is the toe side front edge that overlaps with the middle finger, ring finger, and little finger near the foot, and is surrounded by a dotted line 0305 in FIG. Near the part.

  The “position corresponding to the middle of each proximal phalanx from the third proximal phalanx to the fifth proximal phalanx” will be described. FIG. 3B is a skeleton diagram of the foot. As shown in this figure, the first proximal phalanx (0351), the second proximal phalanx (0352), the third proximal phalanx (0353), the fourth proximal phalanx, from the big toe to the little finger. (0354) and the fifth proximal phalanx (0355). From the third basic phalanx to the fifth basic phalanx, a position corresponding to the middle vicinity of each basic phalanx is a portion 0361 surrounded by a dotted line.

The vicinity of the middle of each proximal phalanx hits the base of the toe, and this part has a concave shape with respect to the ground, so that it does not make a strong ground contact. Therefore, by configuring the front end edge of the base so as to correspond to the middle of each proximal phalanx, the shape of the base is not the same as the overall shape of the bottom surface of the shoe, and a part of the toe side is missing. Even if it is a shape, since the position of the front edge of the base is difficult to contact the sole, it is possible to reduce the possibility that the step formed between the base and the inner bottom surface of the shoe will give the sole a sense of incongruity, and the comfort is good.
<Embodiment 2: Effect>

The insole according to the present embodiment has versatility that can be used for various shoes, and can prevent a front slip due to the protrusion, and the shape of the protrusion may cause a sense of discomfort to the foot during use. Is small. Furthermore, it is possible to reduce the possibility that a step generated between the base and the inner bottom surface of the shoe will give a feeling of discomfort to the sole, and the comfort is good.
<< Embodiment 3 >>
<Embodiment 3: Overview>

The insole of the present embodiment is characterized by the structure of the thickness of the base while being based on the first or second embodiment.
<Embodiment 3: Configuration>

  Reference is again made to FIG. The insole (0301) of this embodiment includes a base (0302) and a protrusion (0303). The insole, base, and protrusion are the same as those described in the first or second embodiment except for the points described below.

The base is composed of <1> the second and third metatarsal head corresponding portions are relatively thin, and <2> the first and second metatarsal head corresponding portions are relatively thick. Yes.
(<1> Configuration near the second and third metatarsal heads)

  The “second and third metatarsal heads” will be described with reference to FIG. As shown in this figure, the foot has a first metatarsal (A) to a fifth metatarsal (E). Further, the toe side of the metatarsal bones (A to E) is referred to as the metatarsal head. The first metatarsal head (0356), the second metatarsal head (0357), the third metatarsal head (0358), the fourth metatarsal head (0359), the fifth metatarsal head (0360), and so on.

  “The vicinity of the second and third metatarsal head corresponding parts” is the vicinity of the part corresponding to the second metatarsal head and the third metatarsal head of the foot, specifically, a part 0362 surrounded by a dotted line. is there. This portion is a convex portion that comes into strong contact with the ground when the toes move away from the ground during walking / running and the toes kick the ground.

  As shown in FIG. 3A, in the insole of this embodiment, the base is configured to be relatively thin near the second and third metatarsal head corresponding portions. Specifically, for example, the portion 0306 shown in gray is relatively thin.

  This relatively thin configuration will be further described with reference to FIGS. 2A and 2B. In these drawings (a) and (d), the portion 0207 shown in gray has a concave shape and is relatively thin. However, it is preferable that the concave cross section is constituted by a gentle curve so as not to give a sense of incongruity to the sole. Therefore, the boundary between the thin part and the other part may not be clear.

By configuring the base area corresponding to the 2nd and 3rd metatarsal heads relatively thin, the convex shape of the sole and the base come into contact with each other without any gap during walking / running. Frictional force increases. As a result, the force applied to the protrusions can be reduced, and the possibility that the protrusions may be broken, such as separation, or the toes of the toes sandwiching the protrusions may be reduced. In addition, since the convex shape of the sole and the concave shape of the base correspond to each other, the relationship between the sole and the base can be increased, and as a result, the sole becomes difficult to slip with respect to the base.
(<2> Configuration near the middle corresponding part of the first and second metatarsal heads)

  The “near first and second metatarsal head intermediate corresponding portions” will be described with reference to FIG. The “near first and second metatarsal head intermediate corresponding part” is the vicinity of the part corresponding to the middle between the first metatarsal head (0356) and the second metatarsal head (0357) of the foot. FIG. 3B shows a portion 0363 surrounded by a dotted line. This portion is a raised peripheral portion near the base of the thumb on the sole, and is a portion that is concave with respect to the ground. Note that the bulge near the base of the thumb indicates the portion 0506 in FIG.

  As shown in FIG. 3A, in the insole according to the present embodiment, the vicinity of the middle corresponding portion of the first and second metatarsal heads of the base is configured to be relatively thick. Specifically, for example, the portion 0307 shown in gray is relatively thick.

  With reference to FIGS. 2A and 2B, this relatively thick configuration will be further described. The portions 0208 shown in gray in (a) and (d) of these figures have a convex shape and are relatively thick. However, as shown in these figures, it is preferable that the convex cross section is constituted by a gentle curve so as not to give a sense of incongruity to the sole. Therefore, the boundary between the thick part and the other part may not be clear. In addition, when a gentle curved surface is formed from a portion corresponding to a concave portion of the base portion of the base of the thumb, which will be described later, there is a case where the structure is not necessarily relatively thick in relation to this portion.

  By constructing a relatively thick part near the middle part of the first and second metatarsal heads of the base, the concave shape of the sole and the base are in contact with each other without any gaps, so there is a relative friction between the sole and the base. Strength increases. As a result, the force applied to the protrusions can be reduced, and the possibility that the protrusions may be broken, such as separation, or the toes of the toes sandwiching the protrusions may be reduced.

  Furthermore, as shown in FIG. 3A, in the insole of this embodiment, a portion corresponding to the concave portion of the base portion of the thumb of the base may be configured to be relatively thick. Specifically, the vicinity of the portion 0308 indicated by the dotted line is formed thick. In addition, the recessed part of the base part of a thumb points out the 0507 part of FIG.5 (b).

  With reference to FIGS. 2A and 2B, this relatively thick configuration will be further described. In (a), (d) and (f) of these figures, the portion corresponding to the concave portion of the base portion of the thumb of the base has a convex shape with the 0209 portion indicated by the dotted line as the apex. It is structured thickly. However, as shown in FIG. 2B (f), it is preferable that the convex portion is constituted by a gentle curve so as not to give a sense of incongruity to the sole. Therefore, the boundary between the thick part and the other part may not be clear.

  By constructing the part corresponding to the concave part of the base part of the thumb of the base relatively thick, the concave shape of the sole and the base come into contact with each other without any gap, so that the friction between the sole and the base is relatively high. Strength increases. As a result, the force applied to the protrusions can be reduced, and the possibility that the protrusions may be broken, such as separation, or the toes of the toes sandwiching the protrusions may be further reduced.

In addition, since the mountain is formed so as to be a wall in the direction in which the foot pressure is directed, the sole is less likely to slip relative to the base from this point. The direction in which the foot pressure is directed is a direction in which the sole pressure center described later moves, and specifically, the toes from the heel side of the movement line at the time of walking of the sole pressure center 0403 shown in FIG. 4A. It is a direction toward the side.
<Embodiment 3: Effect>

  The insole according to the present embodiment has versatility that can be used for various shoes, and can prevent a front slip due to the protrusion, and the shape of the protrusion may cause a sense of discomfort to the foot during use. Is small.

Further, since the base has a thickness that matches the uneven shape of the sole, the sole and the base are in contact with each other without a gap, and therefore, a frictional force is relatively increased between the sole and the base. As a result, the force applied to the protrusions can be reduced, and the possibility that the protrusions may be broken, such as separation, or the toes of the toes sandwiching the protrusions may be reduced. Further, the friction between the sole and the base can be increased, and as a result, the sole becomes difficult to slip with respect to the base.
<< Embodiment 4 >>
<Embodiment 4: Overview>

The insole according to the present embodiment is based on any one of the first to third embodiments, and further has a feature in that the side surface shape of the protrusion is a dolphin dorsal fin shape.
<Embodiment 4: Configuration>

  Refer to FIG. 2A again. The insole according to this embodiment includes a base and a protrusion. The insole, base, and protrusion are the same as those described in the first to third embodiments except for the points described below.

As shown in FIG. 2A (b), the side shape when the protrusion (0203) is viewed from the side is a dolphin dorsal fin shape that gradually increases from the front of the foot toward the back of the foot. In this figure, an arrow heading from the front of the foot to the back of the foot is indicated by 0206.
(Shape that matches the shape of the gap between the big toe and forefinger)

  The dolphin dorsal fin shape matches the shape of the gap between the big toe and forefinger. The “shape of the gap between the big toe and forefinger” will be described. Since the toes are shaped like a cylinder, there is a triangular gap between the toes and the toes with the ground as the base.

  FIG. 5 is a diagram for explaining a gap generated between the foot and the ground. (A) is a plan view, (b) is a side view as viewed from the thumb side of the toe, and (c) is a cross-sectional view of the toe and forefinger observed in a cross section perpendicular to the walking direction.

  In particular, the shape of the thumb of the toe (0501) is thicker in the vicinity of the interphalangeal joint (IP joint, 0504) of the toe thumb (0502) than the interphalangeal joint (IP joint) of the thumb. It gradually narrows toward the back. Moreover, as shown in FIG. 5 (b), since the base part of the toes is recessed from the ground, walking progresses through the gap formed between the ground and the toes (thumb and forefinger) with the foot placed on the ground. When observed in a cross section perpendicular to the direction, as shown in FIG. 5 (c), a triangular gap formed between the ground (0505), the big toe (0502) and the forefinger (0503) (in this figure, gray) The indicated part) gradually increases in height toward the rear.

  The shape of the protrusion of the present embodiment is configured in a shape that exactly fits this space. That is, the side shape of the projection of the insole of the embodiment is a dolphin dorsal fin shape that gradually increases from the front of the foot toward the back of the foot in accordance with the shape of the gap.

By matching the shape of the gap between the toes, there is little risk of giving a sense of discomfort even when pinched between the toes. Further, since the contact area between the toes and the protrusions is increased, the foot can be supported not only by the crotch of the finger but also by a wide area, and there is little possibility that the crotch of the finger becomes painful.
(Shape that does not give a sense of incongruity to the toes while ensuring strength)

  Moreover, if there is not a certain length on the front side of the foot, the protrusion cannot be bent and supported so that the foot does not slide forward. Furthermore, in order to prevent the protrusion and the base from being separated and damaged, it is preferable that the protrusion is connected to the base with as wide an area as possible.

  On the other hand, when the protrusion has a uniform cross section from top to bottom, the following inconvenience occurs. The space formed between the big toe and the forefinger gradually creases upward from the ground side, and then spreads again. Therefore, for example, when this protrusion has a uniform drop-shaped columnar structure from top to bottom, the space formed between the thumb and forefinger is widened, narrowed or changed, The protrusions sandwiched between the thumb and forefinger do not follow this, and the toes tend to feel uncomfortable.

  In order to connect to the base with as wide an area as possible and not to give a sense of incongruity between the toes, the width of the protrusion should gradually crease upward from the ground side (base side). Configure. In addition, the gradually creased shape is such that the space between the thumb and forefinger is constrained to the front of the finger, and as a result, it is configured to gradually crease upward from the ground side (base side). In addition, it may be a drop shape and the front side of the foot may be configured low.

  Because the toes are shaped like a cylinder, there is a gap between the toes on the side in contact with the ground, and even if a part of the protrusion is located in this part, the toes feel uncomfortable. This is because the fear of giving is small.

  And if it is set as the structure which becomes high gradually toward the back direction of a foot, it can be set as the insole which does not give a sense of incongruity to a toe, having intensity | strength to the extent that a protrusion does not bend.

“Dolphin dorsal fin shape” represents a state in which the protrusion protrudes substantially vertically on the rear side of the foot and gradually increases from the front of the foot toward the rear of the foot. The term “substantially vertical” is intended to include the case where the foot is slightly tilted in the forward or backward direction. In addition, the shape of the protrusion in the back direction when viewed from the side may be curved in accordance with the shape of the toe crotch.
<Embodiment 4: Effect>

The insole according to the present embodiment has versatility that can be used for various shoes, and can prevent a front slip due to the protrusion, and the shape of the protrusion may cause a sense of discomfort to the foot during use. But it is even smaller.
<< Embodiment 5 >>
<Embodiment 5: Overview>

  The insole of this embodiment is characterized in that it is based on any one of Embodiments 1 to 4 and further has a non-slip pattern on the base.

However, regardless of the configuration of the first to fourth embodiments, the insole may be provided with a non-slip pattern.
<Embodiment 5: Configuration>

The insole according to this embodiment includes a base and a protrusion, and the base includes a “non-slip pattern”. The insole, the base, and the protrusions are the same as those described in the first to fourth embodiments except for the portions described below. However, in the sixth invention, a configuration including a base and a protrusion is not essential. In the present specification, “base of insole” described below is interpreted as “insole”.
(Anti-slip pattern)

The non-slip pattern is designed so that the sole of the foot slides along the movement line during walking centered on the sole pressure, and / or the direction in which the sole of the foot in a stationary position is about to slip. It has a function of particularly increasing the frictional force with the insole contact surface.
(Movement line when walking around the center of the plantar pressure)

  The “movement line when walking around the center of the sole pressure” will be described.

  The “movement line during walking at the center of the sole pressure” is a locus of the center of pressure (COP) during walking.

  The “plantar pressure center” will be described. Observing walking from the sole of the foot, (1) the heel arrives, (2) the entire sole touches, (3) the entire sole is overweight, and (4) the heel rises and kicks out. At this time, the center of the load that the sole exerts on the bottom surface of the shoe changes according to walking. This load is called plantar pressure, and the plantar pressure calculated on the assumption that the force from the sole contacting the ground is concentrated on the center of gravity is called “plantar pressure center”. This can be considered as movement of the center of gravity of the sole. The movement line at the time of walking around the center of the foot pressure changes depending on the walking speed. Therefore, design according to the movement line of the center of the sole pressure assumed according to the main usage mode of shoes, such as shoes assuming normal walking as the main application or shoes assuming main use as running etc. can do.

  FIG. 4A is a diagram for explaining a relationship between a movement line at the time of walking around the center of the sole pressure and an anti-slip pattern of the base of the insole.

  FIG. 4A (a) is a diagram showing a state in which the sole (0401) and the insole (0404) are overlapped. A shaded part indicated by reference numeral 0402 in the figure indicates a region where the sole touches the bottom of the shoe during walking, and a line indicated by reference numeral 0403 in FIG.

  As shown in this figure, the movement line when walking around the center of the foot pressure is as follows: (1) Head slightly toward the outside with the heel on, (2) Move forward, and (3) Draw a curve between the thumb and index finger. In the direction of, it shows an overall “gradual curve”.

  Therefore, the base of the insole (0404) (in the vicinity of the portion surrounded by the dotted line 0405. The same applies in the present specification), the slip of the sole of the foot depending on the relative position with the foot. An anti-slip pattern to be suppressed may be formed. This anti-slip pattern increases the frictional force between the sole and the insole contact surface in a direction substantially opposite to the direction in which the sole tries to slide along the movement line during walking centered on the sole pressure. It suppresses slippage. This pattern can be formed by, for example, embossing or grooves.

  An example of this pattern is shown in FIG. 4A (a). As shown in this figure, for example, as shown in the cross-sectional view of FIG. 4A (b), the ridge (0406) having a gentle cross section is formed so as to be orthogonal to the movement line during walking at the center of the sole pressure. It is such a state that it is done. In addition, the code | symbol is attached | subjected only to some protrusions. (The specific configuration of the anti-slip pattern will be described later.)

The movement line at the time of walking centered on the sole pressure, that is, (1) heading slightly outwards with heels, (2) moving forward as it is, (3) drawing a curve and proceeding in the direction between the thumb and index finger. An anti-slip pattern for emphasizing the frictional force between the sole and the insole contact surface in a direction substantially opposite to the direction in which the sole tries to slide along the curve that draws a “gradual curve” as a whole, By forming with a groove | channel etc., the contact with a sole and a base can be ensured and the stability of a walk can be improved.

(Direction in which the soles try to slide when standing still)

  Next, “the direction in which the sole tries to slip when standing still” will be described.

FIG. 4B is a diagram for explaining the relationship between the direction in which the soles try to slip and the anti-slip pattern of the base (0405) of the insole (0404) when standing still. The shaded portion indicated by reference numeral 0402 in the figure indicates a region where the sole (0401) is in contact with the bottom surface of the shoe during walking. When using shoes with high heels, a force that causes the sole to slide toward the toe side and a frictional force that resists the sole and the insole contact surface are generated when standing still. That is, in the stationary position, the direction of the force with which the sole tries to slide toward the toe side is the direction of a straight line connecting the approximate center of the foot heel and the tip of the second finger. Specifically, the direction in which the sole tries to slide when standing still is the direction of the arrow 0407 from the heel side to the toe side shown in FIG. 4B. Then, the direction substantially opposite to the direction in which the sole tries to slide when standing still is the direction of the frictional force between the sole and the insole contact surface that resists the force with which the sole tries to slide.
(Especially increases the frictional force between the sole and the insole contact surface)

  Further, “especially increasing” means that the frictional force in a direction other than a specific direction may be reduced. That is, as a conventional anti-slip pattern, it is conceivable to perform embossing by providing polka-dot-shaped convex portions formed at uniform intervals on the base. In this case, the effect of increasing the frictional force in one or two directions does not occur. On the other hand, the base of the insole of the present embodiment has a direction in which the soles try to slide along a movement line at the time of walking with the center of the sole pressure, and / or a direction in which the soles try to slide when standing still. It is characterized in that the frictional force between the sole and the insole contact surface is particularly increased in a substantially opposite direction.

The insole of this embodiment can particularly increase the frictional force between the sole and the insole contact surface by forming a non-slip pattern that catches the sole that is about to slip when walking or / and standing still. Therefore, it is possible to prevent the foot from slipping.
(Example of specific configuration of anti-slip pattern)

  For example, as shown in FIG. 4A (a), a plurality of protrusions (0406) that are orthogonal to the movement line (0403) at the time of walking centered on the sole pressure may be arranged at substantially equal intervals. In this case, the frictional force between the sole and the insole contact surface can be particularly increased in a direction substantially opposite to the direction in which the sole tries to slide along the movement line at the time of walking around the center of the sole pressure. Moreover, a semicircular shape or a triangular shape may be sufficient as the cross-sectional shape at the time of cut | disconnecting this protrusion along the movement line at the time of the walking of the sole pressure center. Alternatively, for example, a gentle mountain shape as shown in FIGS. 4A (b) and 4 (c) may be used. In this case, there is little possibility that dirt enters the boundary between the ridge and the base. Alternatively, this cross-sectional shape may be, for example, a front-back asymmetry in the direction in which the soles try to slide as shown in FIG. 4A (d), and the heel side surface may be steeply inclined and the toe side surface may be gently inclined. In this case, since the steep slope is arranged on the side that catches the sole that tries to slide along the movement line at the time of walking with the center of the plantar pressure, the effect that the sole that tries to slide can be firmly received in this part Play. In addition, since the toe side surface has a gentle slope, there is an effect that there is little resistance when taking off the shoes. In addition, instead of the ridges, for example, a similar configuration as shown in FIG. 4A (e) can be configured by grooves.

  Further, as shown in FIG. 4B, a plurality of ridges (0408) that are orthogonal to the direction (0407) in which the soles in a stationary position are intended to slide may be arranged at substantially equal intervals. In this case, it is possible to particularly increase the frictional force between the sole and the insole contact surface in a direction substantially opposite to the direction in which the sole tries to slip when standing still. In addition, the cross-sectional shape when the ridge is cut along the direction in which the soles in the standing position try to slide is the same as the case where the above-mentioned cross-sectional shape is orthogonal to the movement line at the time of walking at the sole pressure center. A semicircular shape, a triangular shape, or a gentle mountain shape may be used. In the case of a gentle Yamagata, there is little risk that dirt will enter the boundary between the ridge and the base. Alternatively, similarly, the sole may be asymmetrical in the direction in which the sole tries to slide, the heel side surface may be steeply inclined, and the toe side surface may be gently inclined. In this case, since the steeply inclined surface is arranged on the side for receiving the sole to be slid when standing still, the effect of being able to firmly receive the sole to be slid at this portion is obtained. In addition, since the toe side surface has a gentle slope, there is an effect that there is little resistance when taking off the shoes. In addition, it is also possible to comprise not only a protrusion but the structure similar to these with a groove | channel.

Further, FIG. 4C shows that the sole and the insole are oriented in a direction in which the soles try to slide along the movement line at the time of walking centered on the sole pressure, and in a direction substantially opposite to the direction in which the soles try to slide in the standing position. It is an example of the insole which raised especially the frictional force with a contact surface. The shaded portion indicated by reference numeral 0402 in the figure indicates a region where the sole (0401) is in contact with the bottom surface of the shoe during walking. As shown in this figure, a plurality of ridges (0406) orthogonal to the movement line (0403) at the time of walking centered on the sole pressure are arranged at substantially equal intervals, and at the time of walking around the center of foot pressure. In a portion away from the movement line, a plurality of ridges (0408) may be arranged at substantially equal intervals so as to be orthogonal to the direction (0407) in which the soles in a standing position try to slide. In this case, the sole should be in the opposite direction to both the direction in which the sole tries to slide along the movement line during walking with the center of the plantar pressure and the direction in which the sole tries to slide in the stationary position. And the insole contact surface can be particularly increased in frictional force. In addition, the cross-sectional shape when these protrusions are cut along the direction of movement of the foot pressure center of walking and / or the direction in which the sole of the foot in a standing position tries to slide is semicircular or triangular. It may be a gentle Yamagata. Alternatively, the sole may be asymmetric in the direction in which the soles are about to slide, the heel side surface may be steeply inclined, and the toe side surface may be gently inclined. In addition, it is also possible to comprise not only a protrusion but the structure similar to these with a groove | channel.
(Another example of the specific configuration of the non-slip pattern)

  6A to 6C are diagrams illustrating another example of the specific configuration of the anti-slip pattern. That is, as shown in these drawings, the anti-slip pattern may be formed in a waveform.

  FIG. 6A is an example of an insole in which the frictional force between the sole and the insole contact surface is particularly increased in a direction substantially opposite to the direction in which the sole tries to slide along the movement line at the time of walking around the center of the plantar pressure. A shaded portion indicated by reference numeral 0602 in the figure indicates a region where the sole (0601) contacts the bottom surface of the shoe during walking (the same applies to FIGS. 6B and 6C), and indicated by reference numeral 0603 in the figure. A line is a movement line at the time of walking centering on the sole pressure. Then, a ridge (0606) having a waveform that is orthogonal to the movement line during walking of the sole pressure center is provided on the base (0605) of the insole (0604), so that the walking of the sole pressure center is performed. The frictional force between the sole and the insole contact surface can be particularly increased in a direction substantially opposite to the direction in which the sole tries to slide along the movement line of time. In particular, by using the wave-shaped ridges, the lateral shaking of the feet is reduced, so that it is possible to walk more comfortably.

  FIG. 6B is an example of an insole in which the frictional force between the sole and the insole contact surface is particularly increased in a direction substantially opposite to the direction in which the sole tries to slip when standing still. On the base (0605) of the insole (0604), by providing a ridge (0608) having a waveform that is orthogonal to the direction (0607) in which the soles of the insole stand to slide, The frictional force between the sole and the insole contact surface can be particularly increased in a direction substantially opposite to the direction in which the sole of the foot tries to slide. In particular, by using the wave-shaped ridges, the lateral shaking of the feet is reduced, so that it is possible to walk more comfortably.

FIG. 6C shows the sole and the insole contact surface in a direction in which the sole tries to slide along a movement line at the time of walking centered on the sole pressure, and in a direction substantially opposite to the direction in which the sole tries to slide in a stationary position. It is an example of the insole which raised especially the frictional force. As shown in this figure, a plurality of ridges (0606) having a plurality of waveforms that are orthogonal to the movement line (0603) at the time of walking centered on the plantar pressure are arranged at substantially equal intervals, and walking on the plantar pressure center is performed. In the part away from the movement line at the time, a plurality of corrugated ridges (0608) perpendicular to the direction (0607) in which the soles in a standing position try to slide are arranged at substantially equal intervals. Also good. In this case, the sole should be in the opposite direction to both the direction in which the sole tries to slide along the movement line during walking with the center of the plantar pressure and the direction in which the sole tries to slide in the stationary position. And the insole contact surface can be particularly increased in frictional force.
(Another example of the specific configuration of the non-slip pattern)

  7A to 7C are diagrams illustrating another example of the specific configuration of the anti-slip pattern. That is, as shown in these drawings, the anti-slip pattern can be configured by arranging a plurality of convex shapes having particularly high frictional force between the sole and the insole contact surface in a specific direction. An example of a convex shape will be described. For example, FIG. 7A (b) shows a shape when a crescent-shaped convex shape, which is an example of a convex shape, is viewed from above. As shown in this figure, the convex shape may have a shape close to a crescent shape. FIG. 7A (c) shows a convex side surface shape, and FIG. 7A (d) shows a cross-sectional shape when the convex shape is cut along a symmetric line (0709) described later. . As shown in FIG. 7A (d), the inclination angle α on the inner side (the side of the arrow A shown in FIG. 7A (b)) of the two arcs constituting the crescent shape is shown on the outer side (FIG. 7A (b)). The angle is relatively steep compared to the inclination angle β on the arrow B side. FIG. 7A (e) is a diagram showing a state in which the convex shape is viewed from the arrow A side.

  In FIG. 7A (a), the shaded part indicated by reference numeral 0702 in the figure indicates a region where the sole (0701) contacts the bottom of the shoe during walking (the same applies to FIGS. 7B and 7C). A line indicated by reference numeral 0703 in the figure is a movement line at the time of walking around the center of the sole pressure. A plurality of symmetrical lines of the crescent-shaped convex shape (0706) may be arranged on the base (0705) of the insole (0704) so as to be parallel to the movement line (0703) of the sole pressure center. . The crescent-shaped convex “left-right symmetric line” is a dotted line 0709 shown in FIG. 7A (b). In addition, it arrange | positions so that the inner side (the side of the arrow A shown by FIG. 7A (b)) may become a heel side among two circular arcs which comprise a crescent moon shape. In this case, it is possible to particularly increase the frictional force between the sole and the insole contact surface in a direction substantially opposite to the direction in which the sole tries to slide along the movement line at the time of walking around the center of the sole pressure. Since both sides of the shape reduce the lateral movement of the foot, it becomes possible to walk more comfortably.

  Alternatively, as shown in FIG. 7B, a plurality of symmetrical lines of the crescent-shaped convex shape (0708) may be arranged so as to be parallel to the direction (0707) in which the soles are slid when standing still. Furthermore, as shown in FIG. 7C, as in the arrangement of the ridges described above, the left-right symmetric line of the crescent-shaped convex shape (0706) is parallel to the movement line (0703) during walking at the center of the plantar pressure, In the part of the plantar pressure center away from the movement line at the time of walking, the crescent moon is shaped so that the left-right symmetry line of the crescent-shaped convex shape (0708) is parallel to the direction in which the sole tries to slide when standing still (0707). A plurality of convex shapes may be arranged. In this figure, there is a part where there is a gap between the crescent-shaped convex shapes, but in this part, the crescent-shaped shape in which the movement line (0703) during walking at the center of the sole pressure is parallel to the left-right symmetry line. A convex shape (0706) or a crescent-shaped convex shape (0708) in which the direction in which the sole of the foot tries to slip when standing still (0707) and the left-right symmetry line are parallel may be appropriately arranged.

In addition, it is also possible to comprise the same structure with a hole instead of a convex shape.
(Non-parallel arrangement of anti-slip pattern)

  Note that the anti-slip patterns may be arranged substantially in parallel. The “substantially parallel arrangement” means that there is a gap between protrusions (including embossing, grooves, holes, etc.) constituting the anti-slip pattern. Hereinafter, a description will be given with reference to FIG.

  8A and 8B are diagrams for explaining a substantially parallel arrangement of the anti-slip patterns. FIG. 8A (a) shows a case where the ridges constituting the non-slip pattern (0802a) provided in the insole (0801a) overlap with each other and there is no gap. In this case, since the skin of the sole does not enter between the ridges, only the sole and the ridge portion contact each other, so that the frictional force between the sole and the insole contact surface is particularly enhanced by the ridge. The effect of the insole of this embodiment cannot be exhibited. On the other hand, as shown in FIG. 8A (b), when there is a gap between the ridges constituting the anti-slip pattern (0802b) provided on the insole (0801b), the skin of the sole is The frictional force between the sole and the insole contact surface is particularly increased. In this figure, the protrusion (0806) is also shown, but this protrusion is not an essential component in the sixth invention.

  Further, the anti-slip pattern may be a wave-type anti-slip pattern made of wave-shaped ridges instead of linear ridges. In this case, a corrugated protrusion may be disposed in the same manner as the linear protrusion. That is, as shown in FIG. 8B (d), the wave-type anti-slip pattern (0802d) is configured to fit within a rectangular (0803d) frame indicating the arrangement of the anti-slip pattern provided on the insole (0801d). Good to be. On the other hand, in FIG. 8B (c), the quadrilaterals (0803c) indicating the arrangement of the corrugated anti-slip pattern (0802c) provided on the insole (0801c) overlap each other (the anti-slip patterns are arranged in parallel). Not) shows the case. In this way, when the anti-slip pattern is not arranged in parallel, the anti-slip pattern causes the anti-slip pattern to be in a specific direction (for example, substantially opposite to the direction in which the sole in the standing position shown by 0804 in this figure tries to slide). In particular, the frictional force between the sole and the insole contact surface is not increased. This will be described in detail below.

  FIG. 8B (c) shows a case where the quadrilaterals (0803c) indicating the arrangement of the corrugated anti-slip pattern (0802c) provided in the insole (0801c) overlap with each other and there is no gap. In this case, the corrugated anti-slip pattern generates a frictional force between the sole and the insole contact surface to prevent the sole from slipping in various directions. It is not configured to increase the frictional force between the sole and the insole contact surface “in particular” (in the direction substantially opposite to the direction in which the sole tries to slip when standing still) shown by 0804 in the figure.

On the other hand, in FIG. 8B (d), there is a gap between the quadrangles (0803b) showing the arrangement of the corrugated anti-slip pattern (0802d) provided in the insole (0801d). For the longitudinal direction of this gap (the direction of double-headed arrow 0805), the frictional force between the sole and the insole contact surface due to the anti-slip pattern is lower than in the case of FIG. 8B (c), but in a specific direction ( For example, the frictional force between the sole and the insole contact surface can be increased "in particular" (in the direction substantially opposite to the direction in which the sole tries to slip when standing still) shown by 0804 in this figure. In this figure, the protrusion (0806) is also shown, but this protrusion is not an essential component in the sixth invention.
<Embodiment 5: Effect>

  The insole according to the present embodiment has versatility that can be used for various shoes, and can prevent a front slip due to the protrusion, and the shape of the protrusion may cause a sense of discomfort to the foot during use. Is small.

  Furthermore, the insole of the present embodiment can particularly increase the frictional force between the sole and the insole contact surface by forming a non-slip pattern that catches the sole that is about to slip when walking or standing still. Thereby, the contact between the sole and the base can be ensured, the front slip of the foot can be further prevented, and the stability of walking can be enhanced.

  Regardless of the configuration of the first to fourth embodiments, by providing the insole with a non-slip pattern, it is possible to ensure the contact between the sole and the base and further prevent the foot from slipping, The stability of walking can be increased.

The conceptual perspective view which shows an example of the insole of Embodiment 1. The figure which shows an example of the insole of Embodiment 1. The figure which shows an example of the insole of Embodiment 1. Example partial contour map of the insole of Embodiment 1 The figure explaining the positional relationship of an example of the insole of Embodiment 2, and a leg. The figure for demonstrating the relationship between the movement line at the time of the walk of the sole pressure center, and the anti-slip pattern of the base of the insole of Embodiment 5. The figure for demonstrating the relationship between the direction which the sole tries to slip at the time of a stationary standing, and the anti-slip pattern of the base of the insole of Embodiment 5. The contact surface between the sole and the insole in a direction substantially opposite to both the direction in which the sole tries to slide along the movement line at the time of walking in the center of the plantar pressure and the direction in which the sole tries to slide in the stationary position. Example of the insole of Embodiment 5 in which the frictional force with the head is particularly increased The figure for explaining the gap which arises between the foot and the ground The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure which shows another example of the specific structure of the anti-slip | skid pattern of the insole of Embodiment 5. The figure for demonstrating the substantially parallel arrangement | positioning of a non-slip pattern The figure for demonstrating the substantially parallel arrangement | positioning of a non-slip pattern

0101 Insole 0102 Base 0103 Protrusion 0104 Foot 0105 Toe 0106 Forefinger

Claims (6)

A base in contact with at least a part of the sole,
Protrusions available between the big toe and forefinger,
An insole having:
The main shape of the projection observed in a cross section substantially parallel to the base is that the length of the foot in the left-right direction is shorter than the length in the vertical direction connecting the heel side and the toe side of the foot, An insole characterized by a drop-shaped shape that narrows toward the toe side. When the projection is used between the big toe and forefinger, the base has a front edge on the toe side near the middle finger, ring finger, and little finger, extending from the third proximal phalanx to the fifth proximal phalanx. The insole according to claim 1, wherein the insole is configured to correspond to a position in the vicinity of the middle of each proximal phalanx. The base is configured relatively thin near the second and third metatarsal head corresponding parts,
The insole according to claim 1 or 2, wherein the middle corresponding portion of the first and second metatarsal head is relatively thick. The insole according to any one of claims 1 to 3, wherein a side shape when the protrusion is viewed from the side is a dolphin dorsal fin shape that gradually increases from the front of the foot toward the back of the foot. In the base, the sole and the insole are oriented in a direction in which the soles slide along the movement line at the time of walking centered on the sole pressure, and / or in a direction substantially opposite to the direction in which the soles slide in a stationary position. The insole according to any one of claims 1 to 4, further comprising an anti-slip pattern for particularly increasing a frictional force with the contact surface. The sole and the insole contact surface are oriented in a direction in which the soles try to slide along the movement line at the time of walking around the center of the plantar pressure, and / or in a direction substantially opposite to the direction in which the soles try to slide in a stationary position. An insole provided with a non-slip pattern arranged substantially in parallel to particularly increase the frictional force.