JP5458257B2 - Insole and method for producing insole - Google Patents

Description

The present invention relates to an insole. More particularly, the present invention corresponds to the "anatomy" of the sole, on the insole to reduce fatigue even when walking a long period of time.

  As used herein, the term “insole” includes “cup insoles” and “soles”.

  Conventionally, various insole structures have been proposed. For example, Patent Document 1 outlines a cup insole that generally fits the sole to the insole of the shoe, cushions the impact applied to the sole during walking, and prevents the pronation and supination of the ribs. Disclosure.

  The cup insole described in Patent Document 1 is provided with a main body member that contacts the entire sole, an inner arch protection member, and an outer arch protection member, and supports the main body member with a length approximately half that of the main body member. The main body member supporting member has a complicated structure composed of two main members.

  It is said that when a person is in a standing position, his / her weight is loaded on his / her foot, and when he / she walks slowly, he / she gains 20% of his / her weight, and when he / she walks quickly, he / she is loaded with an increase of 30%. The arched arch has a so-called impact absorbing effect that absorbs an impact applied to the foot during walking and prevents the entire foot from receiving an impact. When fatigue is accumulated by walking, the muscles that make up the arch droop, reducing the so-called “spring effect” of the arch, and the ability to disperse and absorb impact is lost. In such a case, originally, if there is a support member that supports the arch portion from below, it is possible to prevent drooping of the muscles constituting the arch, but in the case of the cup insole described in Patent Document 1, The part corresponding to the part and the arch has a planar structure. Therefore, in the case of the cup insole described in Patent Document 1, when walking for a long time, an impact applied to the sole is accumulated, and fatigue increases.

  The cup insole described in Patent Document 1 has the desired effect when used for shoes that are used for a relatively short time in harsh environments such as sports shoes and jogging shoes. Or, it is excessive physical properties for soft shoes.

  Patent Document 2 outlines that, on the surface of the insole, a ball joint corresponding portion corresponding to the shape is drilled at the base of the thumb, and the portion corresponding to the metatarsal head is raised slightly higher to raise the metatarsal head A structure with a bar formed, and an arch-shaped rising part on the side corresponding to the arch part is erected integrally with the insole body, and the arch part is projected on the back side of the insole to the part corresponding to the arch part An insole having a structure in which a recessed portion is provided and a cushion material having the same shape as the recessed portion and lower hardness than the insole is fitted in the recessed portion is disclosed.

  In the case of the insole described in Patent Document 2, a major feature is that a ball joint-corresponding portion is drilled to provide a substantially circular cavity. However, even if the size of the foot is the same, the position, size, and shape of the ball joint differ depending on the user, and are not necessarily the same. Therefore, if it is slightly deviated from the circular cavity formed in the ball joint corresponding part, it may hit the peripheral edge of the cavity and become an obstacle.

  In the case of the insole described in Patent Document 2, it is also a great feature that a portion corresponding to the metatarsal bone head is raised slightly higher to form a metatarsal head bar. However, even if the size of the foot is the same, the position, size, and shape of the metatarsal head are different depending on the user, and are not necessarily the same. Therefore, it does not always fit perfectly with the metatarsal head bar, and if it is slightly shifted, it may become an obstacle.

  In the case of the cup insole described in Patent Document 2, the portions corresponding to the stepping portion and the arch have a planar structure except for the circular hollow portion formed in the ball joint corresponding portion. Therefore, in the case of the cup insole described in Patent Document 2, as with the insole described in Patent Document 1, when walking for a long time, an impact applied to the sole is accumulated and fatigue increases.

  Patent Document 3 discloses an insole in which a concave portion is provided in a surface portion corresponding to a first metatarsal ground contact portion, that is, a so-called ball joint corresponding portion, as in Patent Document 2. The insole described in Patent Document 3 has the same points to be improved as described for the insole described in Patent Document 2.

  Patent Document 3 discloses an insole in which a concave portion is provided in a surface portion corresponding to a first metatarsal ground contact portion, that is, a so-called ball joint corresponding portion, as in Patent Document 2.

  In the case of the cup insole described in Patent Document 3, the portions corresponding to the stepping portion and the arch have a planar structure except for the concave portion provided in the ball joint corresponding portion. Therefore, in the case of the cup insole described in Patent Document 3, as with the insole described in Patent Document 1, when walking for a long time, the impact loaded on the sole is accumulated and fatigue increases.

  Patent document 4 is disclosing the shoes which provided the convex part in the front part of the heel contact surface of a shoe inner bottom, and prevented the slip to the front of a leg | foot. The primary purpose of the shoe described in Patent Document 4 is to prevent the foot from moving forward during walking while wearing high heels, and the anatomical structure corresponding to the stepping portion and the arch, By providing a support member that supports the arch from below and preventing drooping of the muscles that make up the arch, even if you walk for a long time, you can reduce the impact applied to the sole and eliminate fatigue It is not intended.

  The walking motion is a series of subtle motions, but it can be roughly divided into landing on the heel or stepping on, stepping on the stepping part as the weight moves from the heel to the toe, and kicking out on the stepping part. It is a continuous operation. The important movements in this continuous movement are the spring effect by the arch part, so-called vertical arch, and the kicking movement by the lateral arch formed by the metatarsal part, so-called stepping part. Therefore, the ideal insole is a structure that supports the vertical arch and the horizontal arch during walking and stimulates moderately, thereby reducing muscle fatigue. For that purpose, it is necessary to consider not only the surface of the insole (the surface where the sole directly contacts) but also the structure of the back surface of the insole instead of designing the anatomical structure.

  The insoles described in Patent Documents 1 to 4 are mainly designed to design the surface of the insole (the surface where the sole directly contacts) into a so-called anatomical structure. With regard to the structure, much consideration has not been paid, and most have a simple planar structure. By the way, the thickness of the insole itself is about 2 mm to about 10 mm, and it is not a very thick member. Therefore, when the back surface of the insole has a simple planar structure, there is a defect that the effect of dispersing the impact received from the ground when walking and landing is low.

JP 2005-205204 A Japanese Patent Application Laid-Open No. 2004-290642 JP-A-11-123102 JP-A-9-140407

  Therefore, the problem to be solved by the invention is not to reduce the “spring effect” of the vertical arch formed by the arch even when worn for a long time, and does not decrease the kicking movement of the horizontal arch formed by the stepping portion. To provide an insole.

Means to solve the problem

  The above problems are solved by the means described below.

On the surface of the insole body, a first cushion member protrudes from the stepping portion corresponding portion, a second cushion member protrudes from the arch corresponding portion, and a portion corresponding to the first cushion member is formed on the back surface of the insole body. An insole in which a third cushion member having the same shape as the first cushion member is protruded, and a fourth cushion member having the same shape as the second cushion member is protruded from a portion corresponding to the second cushion member ,
(A) Each of the cushion members is a urethane foam having a predetermined thickness, and is made into a bag shape together with a wet polyurethane synthetic leather, a nonwoven fabric, and an insole body;
(B) The second cushion member has a first heel-compatible cushion member, and the fourth cushion member has a second heel-compatible cushion member;
(C) The distance between the first cushion member and the extension line of the insole body is larger than the distance between the third cushion member and the extension line of the insole body;
(D) The distance between the second cushion member and the extension line of the insole body is larger than the distance between the fourth cushion member and the extension line of the insole body, and the first heel-corresponding cushion member The distance between the extension line of the insole body is larger than the distance between the cushion member corresponding to the second heel and the extension line of the insole body;
(E) The first cushion member and the third cushion member are integrally configured;
(F) The second cushion member and the fourth cushion member are integrally configured; and (G) the second cushion member and the first flange-compatible cushion member are integrally configured, and the fourth cushion member and the second flange are integrated. Inso Le, wherein; that the corresponding cushion member is integrally formed.

Effect of the invention

According to the invention described in claim 1, the following effects are achieved.
1. Since the cushion member is protruded on the surface of the insole body, that is, the surface where the sole directly contacts and the back surface of the insole body, the metatarsal portion, that is, the base of the toe, is supported. And, the elasticity of the cushion member absorbs the impact received during walking and is prevented from being directly applied to the metatarsal bone, the lateral arch is moderately stimulated and healthy walking is achieved, and muscle fatigue is reduced. Remove. In addition, on both the front and back surfaces of the insole body, the cushion member protrudes from the arch corresponding part, so that the vertical arch is supported, preventing the muscles constituting the vertical arch from drooping even during long walking, and The vertical arch is moderately stimulated, and a healthy gait is successful, eliminating muscle fatigue.

2. Since the second cushion member has a heel-corresponding cushion member on the surface of the insole body, that is, the surface where the sole directly contacts and the back surface thereof, the heel is supported and the elasticity of the cushion member is used during walking. Absorbing the impact received, it is prevented from being directly applied to the heel, and when applied to a female high heel, the foot is prevented from slipping forward.

3. The distance between the first cushion member and the surface corresponding to the insole body is larger than the distance between the third cushion member and the surface corresponding to the insole body, that is, the surface of the insole body is sandwiched between the insole body. Since the thickness of the first cushion member provided is thicker than the thickness of the third cushion member provided on the back surface of the insole body, the cushioning effect on the surface of the insole that directly hits the foot during walking is larger than that of the back surface, and the elasticity Since the shock received by the stepping-corresponding portion during walking is effectively absorbed, and the cushion member is also provided on the back surface of the insole, the impact absorption effect is synergistically improved on both the front and back surfaces.

4). The distance between the second cushion member and the extension line of the insole body is larger than the distance between the fourth cushion member and the extension line of the insole body, that is, the surface of the insole body is sandwiched between the insole body. Since the thickness of the second cushion member provided is thicker than the thickness of the fourth cushion member provided on the back surface of the insole body, the cushion effect on the surface of the insole that directly hits the foot during walking is larger than that of the back surface, and the elasticity Stepping when walking Since the impact received by the attachment corresponding part is effectively absorbed and the cushion member is provided on the back surface of the insole, the impact absorbing effect is synergistically improved on both the front and back surfaces. Further, the distance between the first heel-compatible cushion member and the extension line of the insole body is larger than the distance between the second heel-compatible cushion member and the extension line of the insole body, that is, sandwiching the insole body. Since the thickness of the first heel-corresponding cushion member provided on the surface of the insole body is thicker than the thickness of the second heel-corresponding cushion member provided on the back surface of the insole body, the cushion effect on the surface of the insole that directly hits the heel during walking It is larger than that on the back surface, and its elasticity absorbs the impact of the heel during walking, and the back surface of the insole also has a cushion member, so the impact absorption effect is improved synergistically on both the front and back sides. .

5. Since the first cushion member and the third cushion member have an integrated structure, the elastic modulus of the cushion member is uniform, and the impact received by the foot during walking is evenly distributed and effectively absorbed. Further, the manufacturing cost is reduced.

6). Since the second cushion member and the fourth cushion member are integrally configured, the elastic modulus of the cushion member is uniform, and the impact received by the foot during walking is evenly distributed and effectively absorbed. Further, the manufacturing cost is reduced.

7). Since the second cushion member and the first heel-corresponding cushion member are integrally configured, and the fourth cushion member and the second heel-corresponding cushion member are integrally configured, the elastic modulus of the cushion member is uniform and the impact received by the foot during walking is received. Disperse uniformly and absorb effectively. Further, the manufacturing cost is reduced.

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a plan view of an insole according to the present invention. FIG. 2 is a bottom view of the insole of the present invention. FIG. 3 is a cross-sectional view taken along plane AA of FIGS. 1 and 2. 4 is a cross-sectional view taken along plane BB in FIG. FIG. 5 is a partially enlarged sectional view of FIG.

The insole main body 1 in the present invention was formed of polyvinyl chloride, polyurethane, natural and synthetic leather, polyester, nylon or the like to have a uniform thickness of 1 mm to 3 mm.

  On the surface 2 of the insole body 1, a first cushion member 3 projects from the stepping portion corresponding portion, a second cushion member 4 projects from the arch corresponding portion, and the first cushion member is formed on the back surface 5 of the insole body. 3, a third cushion member 6 having the same shape as the first cushion member 3 is projected, and a fourth cushion having the same shape as the second cushion member 4 is provided at a portion corresponding to the second cushion member 4. The member 7 is protruded.

The shape of the first cushion member 3 and the third cushion member 6 is preferably a shape that supports the entire lateral arch formed by the metatarsals in the lateral (width) direction of the sole, as shown in FIG.

It is preferable that the second cushion member 4 has a first heel-compatible cushion member 8 and the fourth cushion member 7 has a second heel-compatible cushion member 9.

As shown in FIG. 4, the distance (H1) between the first cushion member 3 projecting from the step 2 corresponding portion of the surface 2 of the insole body 1 and the extension line of the insole body 1 is the third It is preferable to provide it so that it may become larger than the distance (h1) between the cushion member 6 and the extension line of the insole main body 1. FIG. That is, by sandwiching the insole body 1, the thickness of the first cushion member 3 provided on the front surface 2 of the insole body 1 is thicker than the thickness of the third cushion member 6 provided on the back surface 5 of the insole body 1. The cushioning effect of the front surface 2 of the insole 1 that directly hits the foot during walking is larger than that of the rear surface 5, effectively absorbs the impact received by the stepping corresponding part during walking due to its elasticity, and also cushions the back surface 5 of the insole 1. Since the member is provided, the impact absorption effect is synergistically improved on both the front and back surfaces.

  As shown in FIG. 1, the second cushion member 4 preferably has a first heel-compatible cushion member 8. As a result, the heel is supported, and the impact received during walking is absorbed by the elasticity of the cushion member, so that it is prevented from being directly applied to the heel, and the foot slips forward particularly when applied to high heels for women. Is prevented.

As shown in FIG. 2, the fourth cushion member 7 preferably has a second heel-compatible cushion member 9. As a result, the heel is supported, and the impact received during walking is absorbed by the elasticity of the cushion member to prevent it from being directly applied to the heel. When applied to the heel, it prevents the foot from sliding forward.

It is preferable that the first heel-corresponding cushion member 8 is manufactured integrally with the second cushion member 4, and the second heel-compatible cushion member 9 is manufactured integrally with the fourth cushion member 7. This is preferable because the elastic modulus of the cushion member is uniform, the impact received by the foot during walking is uniformly dispersed, effectively absorbed, and the manufacturing cost is reduced.

As shown in FIG. 5, the distance (H2) between the second cushion member 4 protruding from the arch portion of the surface 2 of the insole body 1 and the extension line of the insole body 1 is the fourth cushion member 7. And the distance (H3) between the cushion member 8 corresponding to the first heel and the extension line of the insole body 1 is greater than the distance (h2) between the extension line of the insole body 1 and the extension line of the insole body 1. It is preferable to manufacture the cushion member 9 larger than the distance (h3) between the cushion member 9 and the extension line of the insole body 1. That is, the thickness of the second cushion member 4 provided on the front surface 2 of the insole body 1 with the insole body 1 interposed therebetween is thicker than the thickness of the fourth cushion member 7 provided on the back surface 5 of the insole body 1. The cushioning effect on the surface of the insole that directly hits the foot is greater than that on the back surface, and the impact that the stepping corresponding part receives during walking is effectively absorbed by the elasticity, and the cushion member is also provided on the back surface 5 of the insole body 1 As a result, the impact absorption effect is synergistically improved on both sides. Further, the distance between the first heel-corresponding cushion member 8 and the extension line of the insole body 1 is larger than the distance between the second heel-corresponding cushion member 9 and the extension line of the insole body 1, that is, the insole. Since the thickness of the first heel-corresponding cushion member 8 provided on the front surface 2 of the insole main body 1 is thicker than the thickness of the second heel-corresponding cushion member 9 provided on the back surface 5 of the insole main body 1 with the main body 1 interposed therebetween, walking The cushioning effect on the surface of the insole that sometimes directly hits the heel is larger than that on the back surface, and the elasticity of the insole effectively absorbs the impact received by the heel during walking, and there is also a cushion member on the back surface of the insole, so The impact absorption effect is synergistically improved on both sides.

Next, the structure of each cushion member will be described. 4 is a cross-sectional view taken along plane BB in FIG. As shown in FIG. 4, the first cushion member 3 projects from the front surface 2 of the insole body 1 with the insole body 1 interposed therebetween, and the third cushion member 6 projects from the back surface 5 of the insole body 1. ing. 11 is a urethane foam having a thickness of 5 mm, and is formed into a bag shape by sewing sewing together with the wet polyurethane synthetic leather 12, the nonwoven fabric 10, and the insole body 1. It is made in a bag.

  A first cushion member 3 projecting on the front surface across the insole body 1, a third cushion member 6 projecting on the back surface, and a third cushion member projecting on the surface across the insole body 1 4, the first heel cushion member 8, the fourth cushion member 7 protruding from the back surface, and the second heel cushion member 9 may be attached separately.

Alternatively, prepare an insole body, cut in advance into the shape of the stepping part corresponding part of the insole body, the arch corresponding part and the heel corresponding part, and enclose urethane foam of a predetermined thickness with an outer layer material of a predetermined material. The spare cushion member is manufactured by molding into the shape of the stepping portion corresponding portion, the arch corresponding portion and the heel corresponding portion, and the preliminary cushion member is cut out on the insole body so as to protrude from the front and back surfaces of the insole body, respectively. It is preferable to make a bag by filling the part-corresponding part, the arch-corresponding part and the heel-corresponding part, placing a non-woven fabric on the bottom, and sewing the peripheral part together with the insole body. Thereby, compared with the method of attaching a cushion member to the surface and the back surface of an insole main body separately, the cushion effect of a cushion member is exhibited equally and manufacturing cost is reduced.

  FIG. 5 is a cross-sectional view taken along the plane AA in FIG. 1, and is formed integrally with the second cushion member 4 and the second cushion member 4 protruding from the surface of the insole body 1 in FIGS. The cross-sectional shapes of the first heel-corresponding cushion member 8, the fourth cushion member 7 projecting from the back surface of the insole body 1, and the second heel-corresponding cushion member 9 formed integrally with the fourth cushion member 7 are shown. . The structures of the second cushion member 4, the first heel-corresponding cushion member 8, the fourth cushion member 7, and the second heel-corresponding cushion member 9 are the same as the structure of the first cushion member 3 shown in FIG. .

As shown in FIG. 5, the distance (H2) between the second cushion member 4 and the extension line of the insole body 1 is the distance between the fourth cushion member 7 and the extension line of the insole body 1 ( h2), and the distance (H3) between the first heel-corresponding cushion member 8 and the extension line of the insole body 1 is between the second heel-corresponding cushion member 9 and the extension line of the insole body 1. It is preferable to design so as to be larger than the distance (h3). That is, the thickness of the second cushion member 4 provided on the surface of the insole body 1 across the insole body 1 is Since the thickness of the fourth cushion member 7 provided on the back surface 5 of the insole body 1 is thicker, the cushioning effect on the surface of the insole 1 that directly hits the foot during walking is larger than that of the back surface, and the elasticity corresponding to the stepping corresponding portion receives during walking Since the shock is effectively absorbed and the cushion member is also provided on the back surface of the insole, the impact absorption effect is synergistically improved on both the front and back surfaces. Further, the distance between the first heel-corresponding cushion member 8 and the insole body 1 is larger than the distance between the second heel-corresponding cushion member 9 and the insole body 1, that is, the insole body 1 sandwiching the insole body 1 Since the thickness of the first heel-corresponding cushion member 8 provided on the surface of 1 is thicker than the thickness of the second heel-corresponding cushion member 9 provided on the back surface 5 of the insole body 1, the cushion on the surface of the insole that directly hits the heel during walking The effect is larger than that of the back side, and the elasticity that it absorbs the impact of the heel during walking is effectively absorbed, and the cushioning member is also provided on the back side of the insole. improves.

Here, the above-mentioned “extension line of the insole body 1” will be described. As can be seen from FIGS. 3 and 4, the insole body 1 is divided by the first cushion member 3 and the third cushion member 6. This is because the insole body 1 is cut out in accordance with the shape of the stepping portion. Therefore, the “extension line of the insole body 1” is an imaginary line connecting the divided insole bodies 1 together. Since this description can be said also about the 2nd cushion member 4, the 4th cushion member 7, the 1st heel corresponding cushion member 8, and the 2nd heel corresponding cushion member 9, the description regarding them is omitted.

The top view of Example 1 of this invention. The bottom view of Example 1 of this invention. FIG. 2 is a sectional view taken along a plane AA in FIG. 1. Sectional drawing along the surface BB of FIG. FIG. 4 is a partially enlarged sectional view of FIG. 3.

1 Insole body
2 Insole body surface
3 First cushion member
4 Second cushion member
5 Back of the insole body
6 Third cushion member
7 Fourth cushion member
8 Cushion member for 1st rod
9 Cushion member for 2nd rod
10 Nonwoven fabric
11 Urethane foam
12 Wet polyurethane synthetic leather
H1 Distance between first cushion member 4 and extension line of insole body 1
h1 Distance between the third cushion member 6 and the extension line of the insole body 1
H2 Distance between second cushion member 4 and extension line of insole body 1
h2 Distance between the fourth cushion member 7 and the extension line of the insole body 1
H3 Distance between first heel support cushion member 8 and extension line of insole body 1
h3 Distance between the second heel cushion member 9 and the extension line of the insole body 1
h3 Distance between the second cushion member 7 and the extension line of the insole body 1

Claims (1)

On the surface (2) of the insole main body (1), the first cushion member (3) is projected from the stepped portion corresponding portion, the second cushion member (4) is projected from the arch corresponding portion, and the insole main body (1 ) On the back surface (5), a third cushion member (6) having the same shape as the first cushion member (3) is projected from a portion corresponding to the first cushion member (3), and the second cushion member An insole in which a fourth cushion member (7) having the same shape as that of the second cushion member (4) is protruded from a portion corresponding to (4) ,
(A) Each said cushion member (3, 4, 6, 7) is urethane foam (11) of predetermined thickness, wet polyurethane synthetic leather (12), nonwoven fabric (10), and insole main body (1) Be made into a bag together with
(B) The second cushion member (4) has a first heel corresponding cushion member (8), and the fourth cushion member (7) has a second heel corresponding cushion member (9). about;
(C) (H1) between the first cushion member (3) and the extension line of the insole body (1) is between the third cushion member (6) and the extension line of the insole body (1). Greater than the distance (h1);
(D) (H2) between the second cushion member (4) and the extension line of the insole body (1) is between the fourth cushion member (7) and the extension line of the insole body (1). And the distance (H3) between the first heel-corresponding cushion member (8) and the extension line of the insole body (1) is greater than the second heel-corresponding cushion member (9), Greater than the distance (h3) between the extension of the insole body (1);
(E) The first cushion member (3) and the third cushion member (6) are integrally configured;
(F) the second cushion member (4) and the fourth cushion member (7) are integrally configured; and
(G) The second cushion member (4) and the first heel cushion member (8) are integrally configured, and the fourth cushion member (7) and the second heel cushion member (9) are integrally configured. An insole characterized by;

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