JP7142345B2 - Insoles for light mountaineering - Google Patents

Description

The present invention relates to an insole for light mountaineering.

In recent years, light mountaineering such as hiking (also called "trekking") has become popular, and mountain climbing shoes for trekking (also called "trekking shoes") are becoming popular. In addition, with the spread of trekking shoes, the demand for insoles dedicated to trekking shoes (also called "inner soles for trekking shoes") is increasing.

What is important for an inner sole for trekking shoes is that it can firmly fix the foot, that it has flexibility, that it is lightweight, and the like.

For example, the insole of Patent Document 1 uses a sponge material for the main body of the insole, and combines plastic material parts shaped to support the arch of the foot on the back side of the area corresponding to the arch of the foot. By forming the sole, the impact transmitted from the ground to the sole is reduced and the repulsive force to the sole is increased.

Japanese Patent No. 5070445

However, the shoe insole of Patent Document 1 is formed by combining plastic material parts.

In other words, the insole of Patent Document 1 is formed by combining parts made of plastic or the like, so that it is easy to assemble, but has the following problems.

For example, when the insole of Patent Document 1 is applied to trekking shoes and the user walks for a long time, fatigue accumulates in the body due to the weight of the plastic. In addition, the hardness of the plastic sometimes made the soles of the feet hurt.

Furthermore, since the back side of the insole is affixed with a plastic material, the insole itself slips inside the shoe when walking in the mountains, and as a result, the foot cannot be fixed firmly.

The present invention has been made to solve the above problems, and is extremely lightweight, and even when walking for a long time in the mountains, the insole itself does not slip and the foot is always firmly fixed. The object is to obtain an insole for shoes.

The insole for light mountaineering shoes of the present invention comprises a footrest (140) on which the soles of the forefoot (310), middle foot (320) and rearfoot (330) of the foot (300) are placed. , and a corner portion (150) that wraps around the peripheries of the middle foot portion (320) and the rear foot portion (330).
The corner portion (150) is
A metatarsal medial corner (150a) covering a metatarsal medial area (300a), which is an area below the ankle (K) on the medial side of the metatarsal (320), and a lateral side of the metatarsal (320). A metatarsal lateral corner (150b) that covers the metatarsal lateral region (300b), which is the region below the instep of the foot (300), and a hindfoot part that covers the periphery of the hindfoot (330) of the foot (300). consists of a corner (150c),
The midfoot inner corner (150a) gradually increases in height from the vicinity of the ball of the foot (Ha) of the foot (300) and reaches a maximum height (Upma) near the center of the navicular bone (378). is set to
The midfoot lateral corner (150b) includes:
The height gradually increases from the vicinity of the ball of the foot (Hb) and reaches the maximum height at the position (Upmb) near the top of the calcaneus (380),
A substantially U-shaped core member (152) along the corner portion (150) is provided inside the corner portion (150) and inside the footrest portion (140).

As described above, according to the present invention, it is possible to firmly fix the foot during trekking, and it is lightweight.

Therefore, even in long-time trekking, it is possible to walk safely and lightly.

1 is a perspective view of an insole for light mountaineering shoes according to an embodiment; FIG. Fig. 2 is a plan view of the trekking shoe insole 100 of Fig. 1 when viewed from above; 4 is a perspective view of a core member 152; FIG. 2 is a perspective view of the back side of the insole 100 for trekking shoes. FIG. Fig. 2 is a side view of the trekking shoe insole 100 as viewed from the inside; Fig. 3 is a side view of the trekking shoe insole 100 as seen from the outside. 2 is a plan view of the trekking shoe insole 100 attached to a light mountaineering shoe 200 (not shown) and a foot 300 placed thereon, viewed from the back side. FIG. FIG. 2 is a side view of the trekking shoe insole 100 attached to the light mountaineering shoe 200 and the foot 300 placed thereon, as seen from the inside of the foot. It is an explanatory view explaining section 100 of insoles for trekking shoes. It is an enlarged view of a cross section between the vicinity of the KK cross section and the vicinity of the LL cross section.

FIG. 1 is a perspective view of an insole for light mountaineering shoes (hereinafter referred to as an insole for trekking shoes 100) according to an embodiment of the present invention. However, FIG. 1 describes trekking shoes (hereinafter referred to as light mountaineering shoes 200) and feet 300. As shown in FIG. Also, the surface layer member is not illustrated.

The trekking shoe insole 100 corresponds to a forefoot corresponding region 110 corresponding to the forefoot portion 310 of the foot 300, a middle foot corresponding region 120 corresponding to the middle foot portion 320 of the foot 300, and a rear foot portion 330 of the foot 300. and a rearfoot corresponding region 130.

Around the middle foot region 120 and the rear foot region 130 are corner portions 150 (also referred to as corner cups) for preventing the rear foot portion 330 and the middle foot portion 320 of the foot 300 from being displaced in the front, back, left, and right directions. ) is formed.

The corner portion 150 of the middle foot inner region 300a is referred to as the middle foot inner corner 150a, and the corner portion 150 of the middle foot outer region 300b is referred to as the middle foot outer corner 150b. A portion of the corner portion 150 of the region 130 is referred to as a rearfoot corner 150c.

In other words, the corner portion 150 consists of a midfoot inner corner 150a, a midfoot outer corner 150b, and a rearfoot corner 150c.

In addition, the forefoot portion corresponding region 110 corresponding to the forefoot portion 310 of the foot has a slightly raised peripheral edge.

Further, as shown in FIG. 1, the trekking shoe insole 100 forms a medial longitudinal arch projection 160 that holds the medial longitudinal arch of the foot. Also, a lateral longitudinal arch projection 170 for holding the lateral longitudinal arch of the foot is formed, but is not shown in FIG.

The medial longitudinal arch protrusion 160 is connected to the midfoot medial corner 150a and the vicinity of the connection between the metatarsal medial corner 150a and the rearfoot corner 150c, and the lateral longitudinal arch protrusion 170 (Fig. not shown) are articulated near the junction of the lateral midfoot corner 150b and the rearfoot corner 150c.

Further, in the present embodiment, the boundary on the surface side of the trekking shoe insole 100 where the corner portion 150 begins to rise in a curved shape is referred to as a surface side corner rise start line 150L.

The sole surface of the foot is placed on a region (hereinafter referred to as a foot placement portion 140) surrounded by the front side corner rise start line 150L. In FIG. 1, the footrest portion 140 is indicated by a single-dot hatched line.

In other words, the trekking shoe insole 100 consists of the footrest portion 140 and the corner portion 150 .

In addition, inside a part of the area of the footrest portion 140 adjacent to the corner portion 150 of the footrest portion 140 (hereinafter referred to as a peripheral edge area adjacent to the footrest portion corner: not shown) and inside the corner portion 150 provides a core member 152 (indicated by dotted hatching). Specifically, the core member 152 is made of thermoplastic resin, resin sheet, cotton cloth impregnated with resin, plastic material, or the like.

In addition, in the present embodiment, the region below the ankle K on the medial side of the metatarsal portion 320 of the foot 300 is referred to as the medial metatarsal region 300a, and the region below the instep on the lateral side of the foot 300 is referred to as the medial region. Referred to as lateral foot region 300b (not shown).

The thickness of the core member 152 is approximately 1.2 mm to 0.6 mm (preferably 0.8 mm).

FIG. 2 is a plan view of the trekking shoe insole 100 of FIG. 1 as viewed from above. However, FIG. 2 shows the inner longitudinal arch protrusion 160 and the outer longitudinal arch protrusion 170 .

Also, the periphery of the surface of the trekking shoe insole 100 is referred to as front side periphery SE.

In addition, the starting point on the front side peripheral edge SE where the middle foot part inner corner 150a is formed is called the middle foot part inner corner starting point position Sap, and the starting point on the front side peripheral edge SE where the middle foot part outer corner 150b is formed is called middle. This is referred to as the foot outer corner starting point position Sbp.

As shown in FIG. 2, the midfoot inner corner starting position Sap is located on the inner side of the foot facing the area corresponding to the ball of the big toe Ha (see FIG. 7) (hereinafter referred to as the ball of the big toe corresponding area Haa), which will be described later. The midfoot outer corner starting position Sbp faces the area corresponding to the ball of the foot Hb (see FIG. 7) (hereinafter referred to as the ball of the foot Hbb), which will be described later. It is a position on the front peripheral edge SE of the outer side of the foot.

A straight line connecting the tip of the trekking shoe insole 100 (hereinafter referred to as the insole tip Tip) and the rear end of the trekking shoe insole 100 (hereinafter referred to as the insole rear end E) is referred to as a center line CL.

That is, as shown in FIG. 2, when viewed from the front side, the core member 152 has a substantially U-shape straddling the front corner rise start line 150L and along the front corner rise start line 150L. formed.

Further, the edge of the core member 152 on the front peripheral edge SE side from the front corner rise start line 150L is referred to as a core member upper edge 152UL, and the lower edge on the center line CL side of the trekking shoe insole 100 is referred to as the core member. Referred to as lower edge 152LL.

In addition, the tip of the core member 152 on the inner side of the foot (after the ball of the big toe corresponding region Haa) is referred to as the inner tip of the core member foot rIa, and the tip of the core member 152 on the outer side of the foot (after the ball of the toe corresponding region Hbb) is referred to as the core member. The member leg outer tip rIb is called.

That is, as shown in FIG. 2, the core member 152 is built in the corner portion 150 and the footrest portion corner adjacent peripheral edge region (not shown) straddling the surface-side corner rising start line 150L, so that the core member 152 is stronger. become.

3 is a perspective view of the core member 152. FIG. However, in FIG. 3, the core member 152 is partially shown in cross section to show that the core member 152 is curved in a substantially L shape as shown in FIG.

FIG. 4 is a perspective view of the back side of the insole 100 for trekking shoes. In FIG. 4, the line where the corner portion 150 rises on the back side is referred to as a corner portion back side peripheral edge line 150BE.

In addition, the area of the back surface surrounded by the corner back side peripheral line 150BE and the area of the back surface of the forefoot corresponding area 110 are collectively referred to as an insole main body back surface BSF. In FIG. 4, the back surface BSF of the insole main body is indicated by a single-dot hatched line.

Also, the peripheral edge of the back surface of the insole main body back surface BSF is referred to as the back peripheral edge BSE. A position facing the middle foot inner corner starting point position Sap on the back side peripheral edge BSE of the corner back side peripheral edge line 150BE is referred to as a corner back side peripheral edge inner starting point position BSap.

Also, a position facing the middle foot outer corner starting point position Sbp (not shown) on the back side peripheral edge BSE of the corner back side peripheral edge line 150BE is referred to as a corner back side peripheral edge outer starting point position BSbp.

Further, the tip of the inner core member 152 on the insole tip Tip side is referred to as core member foot inner tip rIa, and the tip of the outer core member 152 on the insole tip Tip side is referred to as core member foot outer tip rIb.

FIG. 4 shows the footrest corner adjacent peripheral edge region (hereinafter referred to as footrest corner adjacent peripheral edge region 153) described above.

A woven fabric or non-woven fabric or the like is crimped to the entire back surface of the insole 100 for trekking shoes, but it is not shown in FIG.

That is, as shown in FIG. 4, the core member 152 is provided inside the insole main body back surface BSF across the corner portion back side peripheral edge line 150BE, so that the corner portion 150 does not fall in the foot lateral direction and the foot medial direction. There is no Therefore, even if the foot is unstable during light climbing, the foot is fixed.

FIG. 5 is a side view of the trekking shoe insole 100 viewed from the inside. FIG. 6 is a side view of the trekking shoe insole 100 viewed from the outside.

As shown in FIG. 5, the middle foot portion inner corner 150a gradually increases in height from the middle foot portion inner corner starting position Sap to a position slightly behind the center of the middle foot corresponding region 120 (hereinafter referred to as the middle foot portion). ), and the height gradually decreases from this midfoot inner corner highest point Upma to reach the rearfoot corner 150c.

The midfoot inner corner highest point Upma is, for example, in the case of 26 cm size, when the trekking shoe insole 100 is placed on the floor, the height is 38 mm to 42 mm (preferably 40 mm: ha) from the floor. has been The height (Ehb) of the rear end E of the insole is set to 19 mm to 23 mm (preferably 21 mm).

On the other hand, as shown in FIG. 6, the middle foot outer corner 150b gradually increases in height from the middle foot outer corner starting position Sbp to a position near the start of the rearfoot corresponding region 130 (hereinafter referred to as the middle foot). The height is the highest at the outer corner highest point Upmb), and the height is slightly reduced from this midfoot outer corner highest point Upmb to reach the rearfoot corner 150c.

For example, in the case of a size of 26 cm, when the insole 100 for trekking shoes is placed on the floor, the height of the midfoot outer corner highest point Upmb is, for example, 31 mm to 35 mm (preferably 33 mm:hc) from the floor. ).

That is, as shown in FIGS. 5 and 6, the middle foot inner corner highest point Upma of the middle foot inner corner 150a is higher than the middle foot outer corner highest point Upmb of the middle foot outer corner 150b. , the midfoot inner corner highest point Upma is located on the insole tip Tip side with respect to the midfoot outer corner highest point Upmb.

Next, the relationship between the trekking shoe insole 100 and the foot skeleton when the foot 300 is placed on the light mountaineering shoe 200 will be described.

FIG. 7 is a plan view of the trekking shoe insole 100 attached to a light mountaineering shoe 200 (not shown) and a foot 300 placed thereon, viewed from the back side. FIG. 8 is a side view of the trekking shoe insole 100 attached to the light mountaineering shoe 200 and the foot 300 placed thereon, viewed from the inner side of the foot. However, the core member 152 is indicated by dotted solid lines in FIG. 7, and indicated by dotted hatches in FIG.

Note that FIG. 7 does not show the ball of the big toe corresponding area Haa and the ball of the small toe Hbb, but the ball of the big toe Ha and the ball of the small toe Hb are shown for explanation.

7 and 8, the names of the parts of the foot skeleton will be explained using the names used in the manufacturing industry of prosthetic limbs and the like without using anatomical names.

As shown in FIG. 7, the forefoot part 310 includes a first distal phalanx 312 and a first proximal phalanx 313 forming a first toe 311 (also referred to as a thumb) and a second distal phalanx forming a second toe 335. Bone 336, second middle phalanx 337, second proximal phalanx 338, third distal phalanx 341, third middle phalanx 342, third proximal phalanx 343 forming third toe 340, fourth foot A fourth distal phalanx 348, a fourth middle phalanx 349, and a fourth proximal phalanx 350 forming a toe 347; It means the range including the phalanx 355 .

The metatarsal portion 320 includes, as shown in FIG. 364, the first cuneiform bone 370, the second cuneiform bone 371, the third cuneiform bone 372, the cuboid bone 375, and the navicular bone 378.

In addition, the connection area between the head of the first metatarsal bone 360 and the bone base of the first proximal phalanx 313 is called the ball Ha of the foot, and the head of the fifth metatarsal bone 364 and the base of the fifth proximal phalanx 355 is called the ball of the toe Hb.

The hindfoot portion 330 refers to a range including a calcaneus 380 and a talus 382, as shown in FIG. The connecting portion between the forefoot portion 310 and the middle foot portion 320 is referred to as a stepping portion 390 .

On the other hand, the core member foot inner tip rIa of the metatarsal inner corner 150a of the core member 152 is behind the ball of the big toe Ha and near the center of the first metatarsal bone 360 (from the inner side of the foot) when compared with the foot skeleton. is the position of

In addition, the core member foot outer tip rIb of the metatarsal outer corner 150b of the core member 152 is behind the ball of the foot Hb and inside the foot near the center of the fifth metatarsal bone 364 when compared with the foot skeleton. is in position.

Therefore, the core member foot inside tip rIa of the core member 152 does not cover the ball of the big toe Ha, and the core member foot outside tip rIb does not cover the ball of the foot Hb.

Therefore, even when walking on a mountain, the core member foot inner tip rIa and the core member foot outer tip rIb of the core member 152 do not hurt the foot, and the repulsive force of the core member 152 can be transmitted to the sole of the foot 300 .

On the other hand, as shown in FIG. 8, the midfoot inner corner 150a of the trekking shoe insole 100 gradually increases in height from the midfoot inner corner starting position Sap, The maximum height is at the inner corner highest point Upma. Since the entirety of 300a is suppressed, there is no front-back, left-right displacement. However, the height of the midfoot inner corner highest point Upma is below the ankle K.

Next, the trekking shoe insole 100 of the present embodiment will be described in detail with reference to FIGS. However, in FIG. 9(a), the core member 152 is indicated by dotted hatching, and in FIG. 9(b), the core member 152 is indicated by solid lines.

In addition, in FIG. 9B, the AA cross section, BB cross section, CC cross section, DD cross section, and EE cross section of FIG. 9A are not shown, and the FF cross section , GG section, HH section, II section, JJ section, KK section, LL section, and MM section.

FIG. 10 is an enlarged view of a cross section between the vicinity of the KK cross section and the vicinity of the LL cross section. First, description will be made with reference to FIG. As shown in FIG. 10, the trekking shoe insole 100 of the present embodiment has a multi-layer structure in which a large number of members are pressure-bonded.

The surface is made of a 150 ma surface layer member made of highly absorbent and antibacterial cloth, synthetic leather, artificial leather, natural leather, or the like. A urethane member (hereinafter referred to as an upper layer member 150mb) is provided below the surface layer member 150ma, and a urethane member (hereinafter referred to as a middle layer member 150mc) having a thickness smaller than that of the upper layer member 150mb is provided below the upper layer member 150mb. there is

Under the middle layer member 150mc, a urethane member (hereinafter referred to as a lower layer member 150md) having a thickness similar to that of the middle layer member 150mc is provided. ) is provided.

The hardness is about 40 degrees (35 degrees to 45 degrees: Asker C type) in the cross section between the vicinity of the KK cross section and the vicinity of the LL cross section shown in FIG. 10, and Pc It has a hardness of about 50 degrees (45 to 55 degrees: Asker C type) at a hit, and a hardness of about 35 degrees (30 to 40 degrees: Asker C type) at a Pa hit.

Further, a core member 152 is provided between the middle layer member 150mc and the lower layer member 150md for compression.

That is, the trekking shoe insole 100 is formed by an upper urethane layer member 150mb, a middle layer member 150mc, a lower layer member 150md, and a core member 152, and the core member 152 is formed of the corner portion 150 and the footrest portion corner adjacent peripheral edge region. 153 (not shown), it is possible to prevent the corner portion 150 from collapsing and it is light.

Next, it demonstrates using FIG.9(a) and FIG.9(b). The vicinity of cross section FF to cross section HH shown in FIG. 9(b) is a section of the midfoot corresponding region 120 shown in FIG. 9(a). , the middle foot portion inner corner 150a side, as shown in FIG. 9(b), increases in height toward the inner side of the foot.

As shown in FIG. 9(b), the midfoot outer corner 150b side gradually increases in height from the vicinity of cross section F-F, but the height is the same as that of the midfoot inner corner until near cross section K-K. Lower than 150a side. In the vicinity of the cross section LL and the cross section MM, the heights of the middle foot inner corner 150a side and the middle foot outer corner 150b side are approximately the same. That is, the rearfoot corner 150c (not shown in FIG. 9) is cup-shaped.

Also, the core member 152 starts near the section FF. The core member 152 on the inner foot corner 150a side will be described.

The height of the core member 152 on the side of the middle foot portion inner corner 150a increases along with the height of the middle foot portion inner corner 150a in the sections II, JJ, and KK.

In addition, the core member 152 has a narrow bottom width near the cross section F-F, a maximum width near the cross section I-I, a narrower bottom width near this point, and a maximum width near the cross section L-L. is narrowing.

In the cross section MM, the core member 152 on the inner side corner 150a of the middle foot portion and the core member 152 on the outer side corner 150b of the middle foot portion are connected.

On the other hand, as shown in FIG. 9(b), the core member 152 on the side of the midfoot outer corner 150b has a narrow bottom width near the cross section F-F, and thereafter a bottom width near the cross section JJ. It widens a little and narrows a little near the section KK. The width widens slightly near the cross section LL, and is connected to the core member 152 on the side of the inner corner 150a of the middle foot portion at the cross section MM.

That is, the middle foot portion inner corner 150a is higher than the middle foot portion outer corner 150b, and the core member 152 has a height corresponding to this height. Therefore, the middle foot portion 320 and the rear foot portion 330 can be firmly fixed even during trekking, and the middle foot portion inner region 300a of the foot 300 can be sufficiently suppressed. Therefore, the leg 300 is more fixed.

The insole 100 for trekking shoes has a lateral arch protrusion for maintaining the lateral arch of the foot 300, an inner longitudinal arch protrusion, and an outer longitudinal arch protrusion for maintaining the three arches of the foot. You can do it.

Further, the shape of the trekking shoe insole 100 and the core member 152 may be applied to the midsole or outsole of the light mountaineering shoe 200 .

Furthermore, in the above description, the upper layer member 150mb, the middle layer member 150mc, and the lower layer member 150md are explained as urethane members, but they may be foam members that do not easily sag.

REFERENCE SIGNS LIST 100 trekking shoe insole 110 forefoot corresponding region 120 middle foot corresponding region 130 rearfoot corresponding region 140 foot placement portion 150 corner portion 150a middle foot inner corner 150b middle foot outer corner 150c rearfoot corner 150L surface side corner rise start line 152 core member 200 light mountain climbing shoes 300 foot 310 forefoot portion 320 middle foot portion 330 rear foot portion

Claims (4)

A footrest (140) on which the soles of the forefoot (310), middle foot (320) and rear foot (330) of the foot (300) are placed, and the middle foot (320) and the rear foot. An insole for light mountain climbing shoes, comprising a corner portion (150) that wraps around the periphery of a portion (330),
The corner portion (150) is
A metatarsal medial corner (150a) covering a metatarsal medial area (300a), which is an area below the ankle (K) on the medial side of the metatarsal (320), and a lateral side of the metatarsal (320). A metatarsal lateral corner (150b) that covers the metatarsal lateral region (300b), which is the region below the instep of the foot (300), and a hindfoot part that covers the periphery of the hindfoot (330) of the foot (300). consists of a corner (150c),
The medial corner of the metatarsus (150a) gradually increases in height from the vicinity of the ball of the foot (Ha) of the foot (300) and reaches a maximum height (Upma) near the center of the navicular bone (378). is set to
The midfoot lateral corner (150b) includes:
The height gradually increases from the vicinity of the ball of the foot (Hb) and reaches the maximum height at the position (Upmb) near the top of the calcaneus (380),
An insole for light mountain climbing shoes having a substantially U-shaped core member (152) along the corner portion (150) inside the corner portion (150) and inside the footrest portion (140). The footrest portion (140) and the corner portion (150) are formed by crimping a urethane upper layer member (150 mb), a middle layer member (150 mc) and a lower layer member (150 md),
Furthermore, the core member (152) is inserted between the middle layer member (150mc) and the lower layer member (150md) ,
This core member (152)
Between the middle layer member (150mc) and the lower layer member (150md) of the footrest portion corner adjacent peripheral region portion adjacent along the corner portion (150) of the footrest portion (140) and the corner portion (150) 2. The insole for light mountaineering shoes according to claim 1 , wherein the insole has a substantially U-shape curved in a substantially L-shape extending between the middle layer member (150mc) and the lower layer member (150md) . The core member (152) is
3. The insole for light climbing shoes according to claim 1, wherein the insole is made of thermoplastic resin, resin sheet, or cotton cloth impregnated with resin or made of plastic material. The insole for light climbing shoes according to claim 1, 2 or 3, characterized in that the thickness of said core member (152) is in the range of 1.2 mm to 0.6 mm.

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