JP2010264139A - Sole pad, footwear with the sole pad, and insole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sole pad configured to follow the sole which moves in the footwear, and as a result held at a predetermined portion of the sole to effectively stimulate the sole. <P>SOLUTION: The sole pad is used by being affixed to footwear so as to make contact with the arch 20 of the sole, and the sole pad is provided with: a flat upper surface 10 making contact with the sole; and a side surface 11 for connecting the upper surface 10 and the affixing surface 13 which is affixed to the footwear. The angle θ1 formed between the affixing surface 13 and the side surface 11 is substantially a right angle or greater. The front edge 2 and the rear edge 3 of the pad 1 are formed in a circular arc shape in a plan view, and the curvature radius R2 of the rear edge 3 is set to be less than the curvature radius R1 of the front edge 2. A side edge 5 which makes contact with the arch 20 at a position on the outer side, relative to the foot, of the sole is composed of two curved sections 5A, 5B having a protruding shape in the plan view, and the two curved sections 5A, 5B are connected in a substantially V-shape to form a cutout 6 having an opening which faces the inner side of the foot. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a foot pad used by being fixed to a footwear or an insole so as to be in contact with a predetermined portion such as an arch portion of the foot, and footwear and an insole provided with the foot pad.

  Conventionally, elastic materials such as synthetic rubber are used for footwear such as socks, shoes, and sandals in order to reduce the impact on the soles during walking and to correct and maintain the posture of the foot correctly. It has been proposed to attach a pad or the like formed by (see, for example, Patent Document 1).

  In Patent Document 1, a gentle arch-shaped pad whose upper surface is in the shape of a dent in the arch of the sole is attached to the bottom of the sock in accordance with the position of the arch. Thereby, since the arch shape of the arch portion of the sole is maintained during walking, the entire sole is balanced so that correct walking can be performed.

JP 2001-2558928 A

  By the way, when walking or the like, the sole does not stay in a certain place in the footwear, and for example, it is easy to slide toward the toe side that is the traveling direction. In this respect, the pad described in Patent Document 1 cannot follow the movement of the sole in the footwear because the upper surface in contact with the sole has an arch shape along the shape of the arch. The pad could not continue to be accurately aligned with the arch. In addition, because the upper surface is arched, it is expected to have a massage effect such as promoting blood circulation on the soles and reducing or recovering fatigue of the soles due to walking by giving moderate stimulation to the soles. Can not do it. On the other hand, when trying to obtain a massage effect, if the arch shape on the upper surface of the pad is steep, the foot will feel pain and good comfort will not be obtained, and it will not be able to withstand prolonged use, An effective massage cannot be performed because it cannot be kept in a predetermined position on the sole.

  The present invention has been made paying attention to the above-mentioned problems, and by following the sole that moves in the footwear, it is maintained at a predetermined position on the sole and effectively stimulates the sole, and for a long time. An object of the present invention is to provide a sole pad that does not cause pain or discomfort to the sole even when used, and provides a satisfactory feeling of use, and footwear and an insole provided with the sole pad.

  The sole pad of the present invention is used by being fixed to footwear or an insole so as to contact a predetermined portion of the sole. In the above-described configuration of the present invention, the “footwear” includes various types of footwear such as socks, shoes, sandals, and mules. Further, the “insole” is used by being attached to the sole contact surface of footwear such as shoes, sandals, mules, etc., and the shape thereof is a shape having an area for fixing the sole pad of the present invention. If there is no particular limitation. For example, a shape that fits the entire bottom of the footwear, a shape that fits from the arch of the footwear to the heel (half insole), and a shape that fits only around the foot sole (for example, the arch) (Partial insole) or the like may be included, and the sole pad of the present invention itself may be used as an insole and directly fixed to footwear so as to contact a predetermined portion of the sole.

  In addition, the sole pad of the present invention includes an upper surface in contact with the sole, a side surface connecting the upper surface with a fixed surface of footwear or an insole, and an angle formed by the fixed surface and the side surface is substantially vertical. Or it is fixed to footwear or an insole characterized by being more.

  When using footwear or insole with this foot pad, the pad touches a predetermined part of the foot, but with the above configuration, the degree of load applied to the pad changes with walking, Even if the position of the foot is shifted, the connecting portion between the pad's fixed surface and the side surface (the bottom edge of the pad) serves as a fulcrum, and the upper surface of the pad follows the sole. It becomes easy to maintain at a predetermined position on the back, and exhibits particularly excellent effects when massaging a predetermined position on the sole.

  In a preferred embodiment of the present invention, the upper surface is flat. When a load is applied to the pad during walking, the pad compresses and deforms.For example, when the pad is fixed to footwear or an insole so as to contact the arch of the foot, the dent of the arch is According to the present embodiment in which the upper surface is flat because it becomes shallower toward the periphery (front region, rear region, and outer foot side region), the load applied to the pad is a region that is in contact with the arch periphery of the pad upper surface. At As a result, muscles and health (for example, the long flexor tendon, thumb abductor, and short flexor) existing around the arch are stimulated and loosened by the elastic repulsive force due to the compression of the pad. Therefore, according to this embodiment, the pad can be maintained at a predetermined position on the sole, and the muscles and tendons on the sole that the pad contacts can be successfully massaged by the elastic repulsion force due to the compression of the pad. Therefore, it is effective in relieving fatigue of the soles and promoting blood circulation in the soles.

  The material of the pad is not particularly limited, but by using an elastic body having a predetermined thickness, the pad can easily bite the sole and follow the movement of the sole, and the compressed pad The elastic repulsion force that tries to return to the original size can be efficiently transmitted to muscles and tendons. Moreover, since the burden on a sole can be reduced by unique cushioning property, it is preferable.

  In a further preferred embodiment of the present invention, the sole pad is fixed to the footwear or the insole so as to be in contact with the arch portion of the sole, and at least the front end edge and the rear end edge have a convex curve shape in plan view. It is characterized by being formed. As described above, since the dent of the arch portion becomes shallower as it approaches the periphery thereof, according to this embodiment, at least the front edge portion and the rear edge portion of the pad are in contact with each other along the contour of the arch portion periphery. . Accordingly, in the front region and the rear region of the arch part, the pressing force due to the elastic repulsive force of the pad is distributed almost equally throughout the arch part, and the muscles and tendons around the arch part are stimulated in a wide range, and the muscles and tendons Since no stimulation concentrates on a part of the body, even if it is used for a long time, there is no pain and an appropriate foot massage effect can be obtained.

  In a further preferred embodiment of the present invention, the front edge and the rear edge are formed in an arc shape in plan view, and the radius of curvature of the rear edge is smaller than the radius of curvature of the front edge. It is a feature. According to this embodiment, the rear edge of the pad is smaller in size than the front edge in accordance with the shape of the arch of the sole, so the pad can easily fit the arch of the sole. .

  A further preferred embodiment of the present invention is characterized in that a cutout portion cut out toward the inner foot side is formed at a side edge portion contacting the arch portion on the outer foot side of the sole. As an aspect of the cutout portion, the side edge portion is composed of two curved portions that are convex in a plan view, and the two curved portions are connected in a substantially V shape so that a substantially V-shaped cutout portion is formed. Is preferably formed.

  According to the sole pad of the present invention, it is easy to maintain the pad at a predetermined position on the sole, and it is excellent when massaging the predetermined position, but the depth of the dent of the arch portion of the sole varies depending on the person, If the arch has a shallow dent, if the short finger flexor muscles on the outer foot side of the arch part (nearly the center of the sole) continue to be pressed, the short finger flexor muscles will stretch for a long time. May cause fatigue and the short flexor muscles may become tired. However, according to the present embodiment, the notched portion that is notched in a substantially V shape on the inner foot side is formed by the two curved portions on the side edge portion on the outer foot side where the load of the sole is applied during walking. In this notch, the elastic repulsion force due to the compression of the pad does not act on the sole. As a result, it is possible to provide a space where the flexor muscles relax, so even if a person with a shallow arch on the sole uses the pad of the present invention for a long time, there is no pain and an appropriate foot massage effect is obtained. Obtainable.

  In addition, the said notch part can consider the thing of various aspects other than substantially V shape, for example, a semicircle shape or a triangular shape may be sufficient.

  Further, the footwear and the insole according to the present invention are provided with the sole pad configured as described above, and the pad is fixed to the footwear or the insole so as to contact a predetermined portion of the sole, preferably an arch portion of the sole. .

  According to the sole pad of the present invention, even if the degree of load applied to the pad changes with walking or the position of the foot shifts in the footwear, the fixed surface and side surface of the pad Since the upper surface of the pad can follow the sole of the foot with the connecting portion as a fulcrum, the pad can be easily maintained at a predetermined position on the sole, and a predetermined portion of the sole can be effectively massaged.

It is a top view of the pad for soles which is one Example of this invention. It is a side view of the pad for soles which is one Example of this invention. It is sectional drawing which follows the AA line of FIG. It is a top view which shows the example which mounted | wore socks with the pad for soles. It is the top view which showed the external shape of the pad for soles with the sole. It is sectional drawing which follows the BB line of FIG. It is a top view of the pad for soles which is the other Example of this invention. It is a top view of the pad for soles which is the other Example of this invention. It is a top view of the pad for soles which is the other Example of this invention. It is a top view of the pad for soles which is the other Example of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a plan view of a sole pad (hereinafter simply referred to as “pad”) 1 according to an embodiment of the present invention. 2 shows a side view of the pad 1, and FIG. 3 shows a cross-sectional view of the pad 1. In FIG. 1, the hatched area indicates the area where the pad 1 is strongly compressed by stepping on the foot. In addition, the pad 1 in the illustrated example is for the right foot, but the left foot has a shape that is bilaterally symmetrical with that for the right foot, and illustration and description thereof are omitted here.

  As shown in FIGS. 5 and 6, the pad 1 of this embodiment is fixed to the footwear 30 so as to be in contact with, for example, an arch portion 20 (in a region surrounded by a two-dot chain line in FIG. 5) of a human foot. By touching the arch part 20 of the sole during walking, while maintaining the position in contact with the arch part 20 while maintaining the predetermined position, the impact applied to the sole by walking is reduced and walking Therefore, an effective massage is performed by moderately stimulating the muscles and tendons around the arch portion 20 of the sole that is more fatigued.

  In the present embodiment, socks are used as the footwear 30, and the pad 1 is sewn to the bottom surface 31 of the socks by sewing, and is fixedly mounted on the bottom surface 31. In addition to socks, the pad 1 can be attached to various footwear 30 such as shoes, mules, sandals, pumps, and their insoles. The means for attaching and fixing the pad 1 to the footwear 30 and their insole is not particularly limited, and there are various methods such as a method of fixing with an adhesive and a method of fixing the lower surface of the pad 1 by heat fusion. Any known means can be used.

  As shown in FIGS. 1 to 3, the pad 1 is made of a flat elastic body having a predetermined thickness, and the upper surface 10, that is, the surface in contact with the sole is a horizontal flat surface. Is formed. The side surface 11 of the pad 1 is substantially perpendicular to the upper surface 10, and thus, an upper end peripheral portion 12 including a corner portion is formed at the upper end of the outer peripheral edge of the pad 1. With this configuration, when the pad 1 receives a load from the sole, the upper peripheral edge 12 is first compressed on the upper surface 10, and the muscles and tendons on the sole are effectively pressed by the elastic repulsive force due to the compression. By doing so, it is possible to relieve fatigue of the soles and promote blood circulation.

  In the present embodiment, the upper edge portion 12 is formed such that an angle θ2 formed by the upper surface 10 and the side surface 11 is 90 degrees. The angle θ2 is not particularly limited, but is preferably about 90 degrees or less, specifically, preferably about 90 to 70 degrees, more preferably about 90 to 80 degrees, More preferably, it is approximately 90 to 85 degrees. By setting it as such a range, the elastic repulsion force by the compression of the pad 1 which arises by stepping on a sole becomes large (the contact force of the pad 1 and a sole becomes strong), and the pad 1 is predetermined | prescribed of a sole. It becomes easier to maintain depending on the position, and more effective massage can be performed. In addition, although it is preferable that the upper end peripheral part 12 is made into a shape without roundness, since the elastic repulsion force by compression of the pad 1 becomes strong, when forming the upper end peripheral part 12 so that it may be rounded, it is the upper surface 10. The angle θ2 is defined by the angle formed by each tangent line between the side surface 11 and the side surface 11.

  Further, the pad 1 has an angle θ1 formed between a side surface (hereinafter referred to as “fixed surface”) 13 fixed to the footwear 30 and the side surface 11 substantially vertical. As a result, even when the degree of load applied to the pad 1 changes with walking or the position of the foot in the footwear 30 is shifted, the connecting portion 14 ( Since the upper surface 10 of the pad 1 follows the movement of the sole, the position of the upper edge 12 is maintained at the muscle or healthy position of the arch 20 periphery, These muscles and health can be stimulated effectively.

  If the angle θ1 becomes too smaller than 90 degrees, it is difficult to obtain the effect that the upper edge portion 12 follows the movement of the sole, so the angle θ1 is preferably 90 to 150 degrees, more preferably 90 to 130 degrees. Preferably, 90 to 110 degrees are more preferable, and 90 to 100 degrees are particularly preferable. Within this range, the sole can be successfully pressed by the elastic repulsive force of the pad 1 compressed by receiving the load from the sole while following the movement of the sole. Here, the connecting portion 14 at the lower peripheral edge of the pad 1 may be formed to have a round shape. In this case, the angle θ1 is defined by the angle formed between the tangent lines of the fixed surface 13 and the side surface 11.

  In addition, the pad 1 of the present embodiment is formed of a material having cushioning properties such as a thermoplastic elastomer or rubber (a simple substance or a composite material obtained by appropriately combining these materials). Examples of the thermoplastic elastomer include styrene elastomers, olefin elastomers, urethane elastomers, ester elastomers, fluorine elastomers, silicon elastomers, polyamide elastomers, and the like.

  In addition, natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, ethylene propylene rubber, chloropropylene rubber, chlorosulfonated polyethylene, urethane rubber, acrylonitrile butadiene rubber, polysulfide rubber, acrylic rubber, epichlorohydrin rubber, silicon Examples thereof include rubber and fluororubber.

  The hardness of the pad 1 is not particularly limited, but is preferably selected from the range of 5 to 40 degrees, more preferably selected from the range of 5 to 30 degrees, and further selected from the range of 5 to 20 degrees. preferable. By setting it as such a range, when a load is applied to the pad 1 with walking, the pad 1 tends to bite into the sole, and the pad 1 (especially the upper peripheral edge portion 12 of the pad 1) is adapted to the movement of the sole. Since it becomes easy to follow, the foot sole touching the pad 1 by walking, for example, the muscles around the arch 20 and the muscles can be given moderately healthy stimulation, and even when used for a long time, the foot sole feels strange and painful. It will not be. This hardness is measured by an Asker hardness meter C type (manufactured by Kobunshi Keiki Co., Ltd.) according to SRIS0101.

  Further, the thickness of the pad 1 can be appropriately adjusted according to the mounting position of the pad 1 with respect to the footwear 30 (the location of the sole on which the pad 1 is applied). For example, when the pad 1 is mounted so as to contact the arch portion 20, It is preferable to select from the range of ˜15 mm, more preferable to select from the range of 5 to 10 mm, and even more preferable to select from the range of 5 to 8 mm. By setting it as such a range, the pad 1 (especially the upper-end peripheral part 12 of the pad 1) becomes easy to follow according to a motion of a sole, can give an appropriate stimulus to a sole, and is long. Even with the use of time, the user does not feel a foreign object or discomfort and can maintain a good comfort.

The outer peripheral edge of the pad 1 is such that the front edge 2 that contacts the front region of the arch 20 of the sole and the rear edge 3 that contacts the rear region of the arch 20 follow the contour of the arch 20. Each has a convex curve shape in plan view. In the present embodiment, the front end edge 2 and the rear end edge 3 are formed by arcs having a substantially semicircular shape in plan view, and the respective centers O ₁ and O ₂ are located on the center line L of the pad 1. ing.

Further, the curvature radius R _{2 of} the rear edge 3 is smaller than the curvature radius R ₁ of the front edge ₂ in accordance with the shape of the arch portion 20 of the sole. In this embodiment, the radius of curvature R ₂ of the trailing edge 3 is 15 mm, the radius of curvature R ₁ of the front end edge portion 2 is 20 mm, are set, respectively, thereby, the pad 1 of the sole arch part 20 It is easy to fit.

  Of the side edge portions 4 and 5 of the pad 1, the side edge portion 4 located on the inner foot side of the sole is formed in a linear shape so as to connect the front end edge portion 2 and the rear end edge portion 3 in plan view. ing. On the other hand, the side edge portion 5 located on the outer foot side of the sole consists of two curved portions 5A and 5B that are convex toward the outside of the sole, and the front edge portion 2 and the rear edge portion 3 are connected to each other. By connecting the two curved portions 5A and 5B in a substantially V shape in plan view so as to be connected to each other, a substantially central position of the side edge portion 5 on the outer foot side is cut out toward the inner foot side. A V-shaped notch 6 is formed.

In the present embodiment, the curved portion 5A that is continuous with the front edge 2 is formed in an arc shape in which the radius of curvature r ₁ is the same as the radius of curvature R ₁ (20 mm) of the front edge 3 and the center is the center of the front edge 3. O ₁ and are to match. Similarly, the curve portion 5B which is continuous with the rear end edge portion 3, the curvature radius r ₂ is formed in the same arcuate shape as the curvature radius R ₂ of the front end edge portion 3 ₍₁₅ mm), the center of the rear edge 3 of the center O ₂ and are made to coincide.

  When the footwear 30 equipped with the pad 1 having the above-described configuration is used, the pad 1 contacts the arch portion 20 of the sole. When a load caused by stepping on the sole of the foot is applied to the pad 1 during walking, the pad 1 is compressed and deformed, whereby the outer periphery of the pad 1 (particularly, the front edge 2, the rear edge 3, and the side edges 5). 1 and the vicinity thereof are strongly compressed, and the compressed area presses the arch portion 20 during walking by the elastic repulsive force to effectively stimulate the area. As a result, muscles and tendons such as the long thumb flexor tendon, thumb abductor, and short finger flexor muscle around the arch portion 20 are stimulated, and the long thumb flexor tendon, thumb abductor, short Since finger flexor muscles are loosened, foot massage effects such as relaxation of foot fatigue due to walking and blood circulation promotion of the sole can be obtained.

  At this time, in the pad 1 of the present embodiment, the front end edge portion 2 and the rear end edge portion 3 have a convex curve shape in plan view so as to follow the contour of the arch portion 20 of the sole. The front edge 2 and the rear edge 3 of the pad 1 are in contact with the whole 20. Therefore, in the front region and the rear region of the arch portion 20 where the front edge portion 2 and the rear edge portion 3 of the pad 1 are in contact with each other, the pressing force by the pad 1 is distributed almost evenly throughout the arch portion 20 and the muscles around the arch portion 20. Since the muscles and tendons are stimulated in a wide range and the stimulation does not concentrate on a part of the muscles or tendons, even if used for a long time, there is no pain and an appropriate foot massage effect can be obtained.

  Further, in the pad 1 of the present embodiment, the side edge portion 5 located on the outer foot side of the sole that is loaded during walking is formed in a convex curve shape in plan view, and is substantially V-shaped on the inner foot side at a substantially central position thereof. Since the notched portion 6 is provided in the notched portion 6, the elastic repulsive force of the pad 1 does not act on the sole in the notched portion 6. As a result, it is possible to provide a space in which the short finger flexor muscles relax. Therefore, even if a person with a shallow arch portion 20 uses the pad 1 for a long time, there is no pain and an appropriate foot massage effect can be obtained.

  As mentioned above, although the Example of this invention was described, this invention is not limited to an above-described Example, A various change is possible unless it deviates from the meaning. For example, in the above-described embodiment, the side edge portion 4 located on the inner foot side of the sole is formed in a straight line shape in plan view. However, as shown in FIG. By forming the curved portions 4A and 4B and connecting the two curved portions 4A and 4B in a substantially V shape, a substantially V-shaped cutout portion 6 is formed similarly to the side edge portion 5. May be. In this case, the side edge portion 4 has the same shape as the other side edge portion 5, and the pad 1 has a symmetrical shape (gourd shape).

  Further, as shown in FIG. 8, the side edge 5 located on the outer foot side of the sole is connected to the front edge 2 and the rear edge 3 in plan view without forming the notch 6. Alternatively, it may be configured to have a linear shape. In this case, as compared with the embodiment shown in FIG. 1, the side edge portion 5 on the outer foot side of the pad 1 is in a state of generally pressing the short finger flexor muscle of the arch portion 20 of the sole in contact. Therefore, it is effective for a person who wants to obtain a strong irritation and massage effect on the entire center of the sole (short finger flexor).

  In the above-described embodiment, the size of the front end edge 2 of the pad 1 is larger than that of the rear end edge 3. However, as shown in FIG. 9, the front end edge 2 and the rear end edge 3 are formed. May be formed in equal sizes, and the pad 1 may have a vertically symmetrical shape.

In the pad 1 shown in FIG. 9, the curvature radius R ₁ , R _{2 of} each of the front end edge 2 in contact with the front area of the arch part 20 and the rear end edge part 3 in contact with the rear area of the arch part 20 in plan view, respectively. Is formed in a substantially semicircular shape of 20 mm. Further, the two curved portions 5A and 5B constituting the side edge portion 5 on the outer foot side are both formed in an arc shape having curvature radii r ₁ and r ₂ of 10 mm around the points O ₃ and O ₄ . By connecting the curved portions 5A and 5B in a substantially V shape, a substantially V-shaped notch 6 is formed at the center position of the side edge 5 on the outer foot side. The pad 1 of this embodiment also acts on the sole as in the example shown in FIG.

  In addition, as shown in FIG. 10, in the embodiment shown in FIG. 9, the side edge 5 on the outer foot side is formed with the front edge 2 and the rear edge 3 in plan view without forming the notch 6. As a linear shape so as to be connected, the pad 1 can also have a vertically symmetric and laterally symmetric shape (oval shape). The pad 1 of this embodiment acts on the sole as in the example shown in FIG.

  In the embodiment described above, the side edge 5 on the outer foot side is constituted by two curved portions 5A and 5B having a convex shape, and these curved portions 5A and 5B are connected in a substantially V shape. The substantially V-shaped cutout portion 6 is formed at substantially the center position of the side edge portion 5. However, the form of the cutout portion 6 is not necessarily limited to this, and may be, for example, a semicircular shape or a triangular shape. Various embodiments are possible.

  Furthermore, in the above-described embodiment, the front end edge portion 2 and the rear end edge portion 3 of the pad 1 are each formed in a convex curve shape in plan view. However, the present invention is not limited to this. It can also be formed in various shapes.

DESCRIPTION OF SYMBOLS 1 Foot pad 2 Front edge part 3 Rear edge part 5 Side edge part 5A, 5B Curved part 6 Notch part 10 Upper surface 11 Side surface 12 Upper peripheral edge part 13 Fixing surface 20 Arch part 30 Footwear

Claims (9)

A foot pad used by being fixed to footwear or an insole so as to contact a predetermined part of the sole,
A foot comprising: an upper surface in contact with the sole; a side surface connecting the upper surface with a fixed surface of footwear or an insole; and an angle formed by the fixed surface and the side surface is substantially vertical or larger. Back pad.   The foot pad according to claim 1, wherein the upper surface is flat.   The foot pad according to claim 1, wherein the foot pad is made of an elastic body having a predetermined thickness.   The foot pad according to any one of claims 1 to 3, wherein the foot pad is fixed to the footwear or the insole so as to be in contact with the arch portion of the sole, and at least the front edge portion and the rear edge portion are convex in a plan view. A sole pad having a curved shape.   5. The sole pad according to claim 4, wherein the front end edge and the rear end edge are formed in an arc shape in a plan view, and a curvature radius of the rear end edge is a curvature radius of the front end edge. Foot pads characterized by being smaller than.   The foot pad according to claim 4 or 5, wherein a cutout portion cut out toward the inner foot side is formed on a side edge portion in contact with the arch portion on the outer foot side of the foot sole. Features a sole pad.   The foot pad according to claim 6, wherein the side edge portion includes two curved portions that are convex in plan view, and the two curved portions are connected in a substantially V shape, A foot pad, wherein the V-shaped cutout is formed.   Footwear comprising the sole pad according to any one of claims 1 to 7.   The insole provided with the pad for soles in any one of Claims 1-7.

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