JP2020039770A - insole - Google Patents

Abstract

To provide an insole of a multilayer structure, having cushioning property and durability and lasting long without adopting a complicated structure and a complicated manufacturing method.SOLUTION: An insole 100 as an insole used for footwear comprises: a cover member 10 on which the foot of a user is placed; a support member 30 attached to one side of the cover member via an adhesive; and a cushion member 20 having cork as the main constituent and provided between the cover member and the support member. The support member is not formed with a through hole, and covers the whole from the rear foot part to the intermediate part of the cover member. The cushion member is provided between the cover member and the support member in a state of being heated and compressed, and deformed in an elastically deformable manner.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a multilayered insole (insole) used for footwear such as shoes.

  Human feet are routinely impacted by, for example, running, walking, and other activities. The impact can cause pain in the feet. As foot pain worsens, humans generally try to reduce their pain by changing their posture and walking. This places an extra burden on other parts and joints other than the feet, and causes new pain on other parts and joints other than the feet.

  Therefore, in order to reduce the impact applied to the foot, an insole has been conventionally used for footwear such as shoes. Generally, the insole has an elastic member such as a foam member in order to reduce buffer applied to the foot. The foam member supports the hindfoot region and the arch region of the foot, but cannot withstand long-term use. That is, although the foamed member has elasticity (cushioning property), it has low strength and hardness, deteriorates quickly, and has low durability. In view of this, various insoles have been proposed in which a plastic support member is provided below the foam member to provide cushioning and strength and hardness. Such an insole is generally manufactured in a so-called custom-made manner in accordance with a foot of a user.

  For example, Patent Literature 1 discloses a “first step of performing a manipulative treatment on a foot to correct a sole shape, taking a sole pattern, and obtaining an arch part sole pattern relating to a portion excluding a finger portion. And a second step in which a foot is addressed to the arch sole type to obtain a finger sole type to obtain a finger sole type, and the arch part sole type and the finger sole type are combined to form a whole foot. A third step of obtaining a sole pattern, and an insole manufactured by using a method of manufacturing a sole pattern through the third step.

  In addition, Patent Document 2 discloses “an insole assembly for an article of footwear, wherein the insole assembly is a substantially soft and elastically compressible cushioning member, and the cushioning member includes a foot member. A cushioning member having a top surface and a bottom surface for engaging a sole surface of the cushioning member, and a substantially rigid, resiliently flexible support member, wherein the support member comprises A support member engaged with a portion of the bottom surface, the support member including a rear foot portion extending around a heel end of the cushioning member, and opposite sides of a central opening in the support member. An insole assembly having an inner portion and an outer portion extending forward from the hindfoot portion, the inner portion including an arch transition portion that slopes downward from the exterior of the insole. There.

JP 2013-212335 A JP-A-2006-129873

  The insole described in Patent Literature 1 is manufactured by restoring a foot to a normal state by using a manipulative treatment and then taking a mold of the foot. That is, the insole described in Patent Literature 1 can be manufactured on the premise of the presence of a practitioner. Therefore, the insole described in Patent Literature 1 is more expensive than an insole manufactured by a general custom-made method that does not require a practitioner. Moreover, since an insole cannot be manufactured without a manipulator, it is not widely used. Furthermore, there is no idea in Patent Document 1 that the insole has a multilayer structure.

  The insole assembly described in Patent Literature 2 is a three-layered insole having a multilayer structure, has cushioning properties, is durable, and has a long life. However, since the cushioning member is formed of an open-cell foam or a closed-cell foam, there is still room for improvement in strength and hardness. For example, as described in Patent Literature 2, it is conceivable to provide a support member below the cushioning member to supplement the strength and hardness. However, the center of the support member is open, and the cushioning member is opened. Is exposed. That is, although the support member supplements the strength and hardness around the cushioning member, it cannot be said that the support member sufficiently supplements the overall strength and hardness.

  The present invention has been made in view of such circumstances, and provides a multi-layered insole having cushioning properties, durability, and long life without adopting a complicated structure and a complicated manufacturing method. Is what you do.

  The insole according to the present invention is an insole used for footwear, a cover member on which a user's foot is placed, a support member attached to one side of the cover member via an adhesive, and cork as a main component. , A cushion member provided between the cover member and the support member, wherein the support member does not have a through-hole formed therein, and the whole of the cover member from a rear foot portion to an intermediate portion is provided. The cushion member is configured to be provided between the cover member and the support member in a state where the cushion member is heated and compressed and elastically deformed.

  According to such a configuration, the insole can be manufactured without employing a complicated structure and a complicated manufacturing method, so that the insole can be provided at a low cost without being unnecessarily expensive. In addition, according to such a configuration, since the cushion member having cork as a main component is provided, the cushion member has cushioning properties, strength, and hardness, which are characteristics of cork. Excellent and will last longer.

In the insole according to the present invention, the support member extends in a direction in which left and right sides are separated from the rear foot portion toward the intermediate portion, and a peripheral edge from the rear foot portion toward the intermediate portion has a direction toward the cover member. It is bent to form a wall.
According to such a configuration, since the cushion member is not exposed and swelled to the outside by the support member, the reliability of the support from the rear foot portion to the intermediate portion of the user is improved.

In the insole according to the present invention, before the cushion member is heated and compressed, the cushion member is configured to have a substantially U-shape in plan view having a pair of extending portions facing each other. The lengths can be different.
According to such a configuration, the deformation operation corresponding to the shape of the user's foot becomes easy.

In the insole according to the present invention, in a completed state, the cushion member is invisible from the outside by the wall of the support member.
According to such a configuration, appearance does not deteriorate.

  ADVANTAGE OF THE INVENTION According to this invention, since an insole can be manufactured without employ | adopting a complicated structure and a complicated manufacturing method, an insole can be provided without becoming unnecessarily expensive.

FIG. 2 is an exploded perspective view schematically showing a disassembled state of the insole according to the embodiment of the present invention. It is a perspective view which expands and schematically shows the cover member which comprises the insole concerning embodiment of this invention. It is a perspective view which expands and schematically shows the cushion member which comprises the insole concerning embodiment of this invention. It is a top view which shows roughly an example of the deformed state of the cushion member which comprises the insole concerning embodiment of this invention. It is a side view which shows roughly an example of the deformed state of the cushion member which comprises the insole concerning embodiment of this invention. It is a perspective view which expands and shows roughly the support member which comprises the insole concerning embodiment of this invention. It is a perspective view which expands and shows roughly the completed state of the insole concerning an embodiment of the invention. 1 is a perspective view schematically showing a completed state of an insole according to an embodiment of the present invention in a see-through manner.

  “Footwear” using the insole according to the embodiment of the present invention may be anything that is worn on a user's foot. As "footwear", for example, shoes, boots, slippers, sandals, running shoes, hiking shoes, ski boots, snowboard boots, rock climbing shoes, motorcycle shoes, golf shoes, track shoes, track spikes, roller skates, or , Ice skating, etc., but are not limited to these.

  In the embodiment of the present invention, the description will be made by imagining a shoe out of “footwear”, but the contents of the present embodiment can be applied to the other “footwear” described above. The pair of “footwear” means “footwear” for the left foot of the user and “footwear” for the right foot of the same user.

  The insole according to an embodiment of the present invention is configured such that the bottom portion abuts the sole of the footwear (ie, the midsole or a material covering the upper surface of the midsole), and the upper surface contacts the foot of the user. It is arranged in. The “insole” can also be used as a tool for correcting a user's foot. The dimensions of the “insole” are determined based on the size of the footwear used, the gender of the user, and the like, and are not limited to predetermined dimensions. In the present embodiment, the description of “insole” is not particularly divided into gender.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, each part constituting the insole 100 will be described. In the embodiment of the present invention, an insole 100 used for footwear worn on the right foot of the user will be described as an example.

  FIG. 1 is an exploded perspective view schematically showing an insole 100 according to an embodiment of the present invention in an exploded state. FIG. 2 is an enlarged perspective view schematically showing the cover member 10 constituting the insole 100. FIG. 3A is a perspective view schematically showing an enlarged cushion member 20 constituting the insole 100. FIG. 3B is a plan view schematically showing an example of a deformed state of the cushion member 20 forming the insole 100. FIG. 3C is a side view schematically showing an example of a deformed state of the cushion member 20 constituting the insole 100. FIG. 4 is an enlarged perspective view schematically showing the support member 30 constituting the insole 100.

  As shown in FIG. 1, the insole 100 has a configuration in which a cover member 10, a cushion member 20, and a support member 30 are vertically stacked. That is, the insole 100 has an arrangement configuration in which the cover member 10 is at the top of the drawing, the support member 30 is at the bottom of the drawing, and the cushion member 20 is at the bottom of the drawing.

  As shown in FIGS. 1 and 2, the cover member 10 has a user's foot (here, a right foot) placed on the upper surface and a cushion member 20 and a support member 30 attached on the lower surface. The cover member 10 may be configured to include a fiber material capable of promoting comfort of the insole 100. For example, by suppressing at least one of moisture and odor by the cover member 10, comfort of the insole 100 is promoted. However, the constituent material of the cover member 10 is not particularly limited, and may include, for example, synthetic fibers, felt, cloth, and the like.

  Further, the lower surface of the cover member 10 has a shape protruding downward from the heel portion to the middle portion of the foot. This portion is accommodated in the center of the cushion member 20 having a substantially U shape in plan view. Then, due to the deformation of the cushion member 20, the periphery of the raised portion on the lower surface of the cover member 10 is filled. Thereby, the cover member 10 has the function of absorbing the impact applied to the user's foot together with the cushion member 20. Furthermore, since the movement of the cover member 10 is regulated by the cushion member 20, stable shock absorption is possible.

  As shown in FIGS. 1 and 3A, the cushion member 20 is mainly composed of cork, and is provided between the cover member 10 and the support member 30 in a state of being heated and compressed. The cushion member 20 is configured to be deformable by heating and compressing. Cork has the property of expanding two to three times its original volume when heated. Cork also has the property of easily deforming when heated. Furthermore, since the cushion member 20 does not change even if it is heated and compressed, it mainly has cork, so that it can be elastically deformed even after being heated and compressed.

  That is, unlike the foam member (for example, an open-cell foam or a closed-cell foam), the cushion member 20 has not only cushioning properties but also strength and hardness, and thus has high durability. . Note that cork is a main component means that the proportion of cork is 90% or more. Therefore, the cushion member 30 can also be constituted by cork 100%.

  Further, as shown in FIG. 3A, the cushion member 20 has a shape before being heated and compressed, and connects a pair of opposed extending portions (a first extending portion 21 and a second extending portion 22) to a pair of extending portions. It has a substantially U-shape in plan view having a curved portion 23 which is formed. The first extending portion 21 is a portion located on the left side of the user's foot, the second extending portion 22 is a portion located on the right side of the user's foot, and the bending portion 23 is located on the heel side of the user's foot. It is the part located.

  The cushion member 20 is deformed into a shape along the outer edge of the sole of the user's foot as a shape after being heated and compressed. That is, the cushion member 20 is contoured in the shape of the user's foot. As a specific example, as shown in FIG. 3B, the planar shape of the cushion member 20 is a shape along the outer edge (contour) of the user's foot, and the side shape of the cushion member 20 is as shown in FIG. 3C. The shape of the arch of the user's foot is raised.

  As a shape before being heated and compressed, the length in the stretching direction of the first stretching portion 21 and the length in the stretching direction of the second stretching portion 22 are not the same, and the first stretching portion 21 is larger than the second stretching portion 22. It is getting longer. Further, as a shape before being heated and compressed, the cross-sectional length (thickness) of the first stretched portion 21 and the cross-sectional length (thickness) of the second stretched portion 22 are not the same. Is longer (thicker) than the second extending portion 22. This takes into account ease of handling when the cushion member 20 is heated and compressed. In other words, when the planar shape of the cushion member is rectangular, elliptical, or elliptical, the work load corresponding to the contour of the user's foot becomes large, but by adopting the planar shape shown in FIG. Deformation work corresponding to the shape of the user's foot is facilitated.

  That is, since the cushion member 20 is contoured in the shape of the foot of the user, it is easy to correspond to the contour of the foot of the user by setting the shapes of the first extended portion 21 and the second extended portion 22 to be asymmetric. The insole 100 is assembled with the lower side (bottom) of the cushion member 20 in contact with the upper surface of the support member 30.

  The cushion member 20 is invisible from the outside when the insole 100 is completed. That is, when the insole 100 is viewed from the outside, the cushion member 20 is separated by the pointing member 30 and is invisible. By doing so, the appearance of the insole 100 does not deteriorate. When the cushion member 20 is heated and compressed, it may protrude outside the support member 30. In this case, the protruding portion may be cut off.

  As shown in FIGS. 1 and 4, the support member 30 includes a flat support portion 31, a wall portion 32 on which a part of the periphery of the flat support portion 31 is erected, and a wall portion 32 of the flat support portion 31. And a front end 33 which is a part that is not provided. The support member 30 can be formed, for example, by injection molding using plastic as a main component. However, the components of the plastic are not particularly limited, and may be determined by appropriately selecting a material that can provide the required strength and the required hardness. The front end 33 has a wave shape in plan view. This is to support the foot by making the portion corresponding to each finger of the foot convex in plan view. However, the shape of the front end portion 33 is not particularly limited, and may be an arc shape, a straight line shape, or a more complicated wave shape in plan view.

  A portion located on the rear foot side of the user's foot with respect to the user's foot is referred to as a rear foot portion 30 a of the support member 30, and a portion located in the middle of the user's foot is defined as an intermediate portion of the support member 30. It will be referred to as part 30b. The middle part of the user's foot means a region including the arch of the part from the user's hind foot (tip of the heel) to the base of the toe.

  The plane support portion 31 supports the cushion member 20 and the cover member 10, and forms the bottom of the insole 100. That is, when the insole 100 is used for footwear, the planar support portion 31 is placed on the sole upper surface of the footwear. The flat support portion 31 maintains the shape of the insole 100 without depending on an inward load applied from footwear. The presence of the planar support portion 31 allows the cushion member 20 to maintain a shape corresponding to the shape of the user's foot, and can reduce the burden on the user's foot.

  In addition, portions of the peripheral edge of the planar support portion 31 located on the left and right peripheral edges of the user's foot extend in a direction away from the rear foot portion 30a toward the intermediate portion 30b. This is to make the flat support portion 31 correspond to the shape of the user's foot and the shape of the footwear.

  Further, no opening is formed in the planar support portion 31. That is, the planar support portion 31 is not provided with a through-hole in which the heated and compressed cushion member 20 is filled. Even if the through holes are not provided, the joining strength of the cover member 10, the cushion member 20, and the support member 30 does not decrease. The cover member 10, the cushion member 20, and the support member 30 are joined via an adhesive (not shown), but they are firmly joined by applying a load in the vertical direction. No defect occurs in the joining state.

  The entire surface from the rear foot portion to the intermediate portion of the cover member 10 can be covered by the planar support portion 31 in which no through hole is formed. That is, since no through hole is formed in the planar support portion 31, the strength of the support member 30 does not decrease. For example, if a through hole is formed or a cut is made, the strength of the support member is reduced due to that. However, since no through hole is formed in the planar support portion 31, the support The strength of the member 30 does not decrease.

  Since the pointing member 30 including the flat support portion 31 is formed of plastic, it has flexibility. For this reason, the plane support portion 31 can be bent in any of the front, rear, left and right oblique directions from the rear foot portion 30a to the intermediate portion 30b. Thus, even if the user puts weight on the insole 100, the planar support portion 31 functions like a spring, and the shape of the insole 100 is maintained.

  The wall portion 32 is formed by bending a peripheral edge from the rear foot portion 30a of the support member 30 toward the intermediate portion 30b in the direction of the cover member 10. The wall portion 31 prevents the cushion member 20 from protruding outside, and forms a part of the outer surface of the insole 100 when the insole 100 is completed. In other words, the shape of the insole 100 is maintained by the wall portion 32 and the cushion member 20 does not protrude, so that the cushioning property is not impaired. The outer surface of the wall 31 is also a portion that comes into contact with the inner surface of the footwear.

  Next, a completed state of the insole 100 will be described. FIG. 5 is an enlarged perspective view schematically showing a completed state of the insole 100. FIG. 6 is a perspective view schematically showing a completed state of the insole 100 in a see-through manner.

  As shown in FIGS. 5 and 6, the insole 100 has a multilayer structure in a completed state. When the cushion member 20 is heated and compressed, it deforms into a shape corresponding to the contour of the foot of the user. Therefore, the shape of the cushion member 30 shown in FIG. 3B, FIG. 3C, and FIG. 6 is merely an example, and the shape of the cushion member 30 after deformation differs depending on the user.

Next, formation of the insole 100 corresponding to the user's foot will be briefly described.
The insole 100 positions the foot so that the bones and joints of the foot are at appropriate positions so that the user's foot functions ideally. In other words, the insole 100 controls the movement of the user's foot bones, joints, and other parts to appropriately achieve the user's walking cycle. What has made this possible is the three-dimensionally deformable cushion member 20.

  First, a user who wants to make the insole 100 is seated on a chair, and a neutral position of the user's foot is checked while the user's foot is suspended in the air. The neutral position is a position where the foot is put in a no-load state and the load on the joints, ligaments and muscles of the foot is minimized, and the foot can be moved forward, backward, left and right without applying force. After or while confirming the neutral position of the user's foot, the cushion member 20 is heated. The heating of the cushion member 20 may be performed using an oven or the like. The heating temperature may be set to a temperature required to soften the cork (for example, 100 degrees or more).

  After a predetermined time (for example, three minutes or more) has elapsed, heating of the support member 30 is started. The time difference is provided between the heating of the cushion member 20 and the support member 30 because the time for softening the cushion member 20 is longer than the time for dissolving the adhesive applied to the support member 30. When the cushion member 30 is softened, the cover member 10 is placed on the cushion member 20, and the support member 30 is brought into contact with the cover member 10 and the cushion member 20. Since the adhesive applied to the support member 30 is melted, the support member 30, the cover member 10, and the cushion member 20 are joined.

  Next, the assembled insole 100 before completion is pressed against the user's foot. Then, the insole 100 before completion is attached to the user's foot using a hook-and-loop fastener or the like so as to maintain this state. When the insole 100 before completion is attached to the user's foot, the user's foot is put in a transparent synthetic resin bag in this state. It is preferable to form a synthetic resin bag corresponding to the shape of a human foot. In other words, a bag made of a synthetic resin may be formed in a shape like a sock (for example, high socks). After putting the user's foot in the synthetic resin bag, the position of the user's foot is determined in the synthetic resin bag, and the synthetic resin bag is closed using a hook-and-loop fastener or the like. The synthetic resin bag may be closed at the calf of the user's foot. When the synthetic resin bag is closed, the synthetic resin bag is substantially sealed. It should be noted that sealing the synthetic resin bag is not intended to be strictly sealed, and some air may flow in and out.

  The insole 100 is pressed against the user's foot in a synthetic resin bag. Then, the air in the synthetic resin bag is sucked using a compressor. By doing so, the insole 100 before completion is pressed against the bottom of the user's foot with an appropriate pressure. At this time, the worker (the person who forms the insole 100) makes fine adjustments outside the synthetic resin bag so that the insole 100 before completion does not deviate from the feet of the user.

  Then, suction is performed until a predetermined time (for example, 1 to 2 minutes) elapses. Thereafter, the operator checks whether the insole 100 before completion corresponds to the user's foot while the user's foot is floating in the air. Meanwhile, the temperature of the insole 100 before completion decreases, and the cork constituting the cushion member 20 hardens. Thereby, the basic structure of the insole 100 is completed. The insole 100 is then removed from the user's foot. Then repeat the same with the other user's foot.

  As described above, since the insole 100 can be manufactured without employing a complicated structure and a complicated manufacturing method, the insole 100 can be provided at a low cost without being unnecessarily expensive. Further, since the insole 100 includes the cushion member 20 containing cork as a main component, the insole 100 has a cushioning property. Further, since the strength and hardness are high, the insole 100 is excellent in durability and long-lasting. Furthermore, since the insole 100 can be formed in a state where the user's foot floats in the air, that is, the foot is in a natural state, it is possible to provide the insole 100 having a shape more fitted to the shape of the user's foot. .

  In addition, the present invention is not limited to the above-described embodiments, various examples, modifications, and application examples. Various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

10: Cover member 20: Cushion member 21: First extension portion 22: Second extension portion 23: Curved portion 30: Support member 30a: Hind foot portion 30b: Middle portion 31: Planar support portion 32: Wall portion 33: Front end portion 100: Insole

The insole according to the present invention is an insole used for footwear, a cover member on which a user's foot is placed, and a support member mainly composed of plastic and attached to one side of the cover member via an adhesive. A cushion member provided between the cover member and the support member, the cover member having cork as a main component, wherein the cover member has a shape in which a lower surface is raised downward from a rear foot portion to an intermediate portion. The support member does not have a through-hole, and covers the whole of the cover member from the rear foot portion to the intermediate portion, and the cushion member is heated and compressed to deform elastically. And between the cover member and the support member , around the raised portion of the lower surface of the cover member .

ADVANTAGE OF THE INVENTION According to this invention, since an insole can be manufactured without employ | adopting a complicated structure and a complicated manufacturing method, an insole can be provided without becoming unnecessarily expensive. Further, according to the present invention, the cover member, together with the cushion member, has a function of absorbing an impact applied to the user's foot. Further, according to the present invention, since the movement of the cover member is regulated by the cushion member, stable shock absorption can be achieved.

The insole according to the present invention is an insole used for footwear, a cover member on which a user's foot is placed, and a support member mainly composed of plastic and attached to one side of the cover member via an adhesive. A cushion member provided between the cover member and the support member, the cover member having cork as a main component, wherein the cover member has a shape in which a lower surface is raised downward from a rear foot portion to an intermediate portion. The support member does not have a through-hole, and covers the whole of the cover member from the rear foot portion to the intermediate portion, and the cushion member is heated and compressed to deform elastically. Thus, the cover member is provided only between the cover member and the support member and around the raised portion of the lower surface of the cover member.

Claims (4)

An insole used for footwear,
A cover member on which the user's feet are placed,
A support member attached to one side of the cover member via an adhesive,
With cork as a main component, and a cushion member provided between the cover member and the support member,
The support member,
No through-hole is formed, covering the whole from the rear foot portion to the middle portion of the cover member,
The cushion member,
An insole provided between the cover member and the support member in a state where the cover member is elastically deformed by being heated and compressed. The support member,
The left and right sides extend in the direction in which the left and right sides are separated from the rear foot portion toward the intermediate portion, and the periphery from the rear foot portion toward the intermediate portion is bent in the direction of the cover member to form a wall. Item 2. The insole according to item 1. The cushion member,
Before being heated and compressed, it is configured in a substantially U-shape in plan view having a pair of extending portions facing each other,
The insole according to claim 1, wherein the extending direction and the cross-sectional length of the left and right extending portions are different. The cushion member,
4. The insole according to claim 2, wherein in a completed state, the insole is invisible from outside by the wall of the support member. 5.

Images