Insole and footwear

Abstract

A shoe insole for footwear in which a person can stand in a stable posture and walk in a stable posture is provided. A shoe insole (15) is constituted, the shoe insole (15) having a pad (60) placed at a foot insertion portion of the footwear, and in the shoe insole (15), the pad (60) is divided into a medial region (D1) and a lateral region (D2) arranged across a center line (C1) in a width direction in a plan view of the pad (60), the medial region (D1) being a region in which a hallux of the foot is located in the plan view of the pad (60), the lateral region (D2) being a region in which a little toe of the foot is located in the plan view of the pad (60), the pad (60) having a hole (40) that causes a load received by a ground contact portion of the footwear from a heel of the foot at a position corresponding to the lateral region (D2) to exceed a load received by the ground contact portion of the footwear from the heel of the foot at a position corresponding to the medial region (D1).

Description

Technical Field

[0001] This disclosure relates to an insole and footwear for use on the feet of a person. Background Technology

[0002] Patent Document 1 describes an example of an insole installed inside a type of footwear worn on the foot. The insole described in Patent Document 1 includes: a toe portion formed to accommodate the toes; an extension portion formed to accommodate the front ends of the metatarsals that extend wide to the left and right of the foot; an arch portion formed to accommodate the area directly below the metatarsals to the lateral malleolus; and at least two layers of foamed resin, having a heel portion formed to accommodate the area directly below the lateral malleolus and the calcaneus behind it, and is disposed on the sole of the shoe.

[0003] Furthermore, the insole described in Patent Document 1 includes a support plate adhered to the lower surface of the two layers, formed of a raw material that is harder than the second layer of foamed resin. Moreover, the support plate described in Patent Document 1 has an opening for the heel portion of the first and second layers to bear and absorb the load applied by the heel. Additionally, Patent Document 2 describes an insole where the thickness of the portion corresponding to the heel is designed to be thinner than the thickness of the portions to its left and right.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 7090857

[0007] Patent Document 2: Japanese Patent Application Publication No. 2006-102335 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] The inventors of this application recognize the following issue: in the insoles described in Patent Documents 1 and 2, there is room for improvement in order to enable people to stand and walk in a stable posture.

[0010] The purpose of this disclosure is to provide an insole and footwear that allows a person to stand and walk in a stable posture.

[0011] Technical means to solve the problem

[0012] This disclosure relates to an insole having a liner placed in the foot-receiving space of a shoe. The liner is divided into an inner region and an outer region, arranged across a centerline in the width direction when viewed from above. When viewed from above, the inner region is the area where the big toe of the foot is located, and the outer region is the area where the little toe of the foot is located. The liner has an auxiliary mechanism that causes the load borne by the grounding portion of the shoe from the heel of the foot at a position corresponding to the outer region to exceed the load borne by the grounding portion from the heel of the foot at a position corresponding to the inner region.

[0013] This disclosure relates to a type of footwear, comprising: a main body for inserting a foot; and a grounding portion fixed to the main body and grounded. In the footwear, the main body is divided into an inner region and an outer region, arranged across a centerline in the width direction of the main body when viewed from above. When viewed from above, the inner region is the area where the big toe of the foot is located, and the outer region is the area where the little toe of the foot is located. The grounding portion, when viewed from above, is arranged throughout the inner and outer regions. The grounding portion has a setting mechanism that causes the load borne by the grounding portion from the heel of the foot at a position corresponding to the outer region to exceed the load borne by the grounding portion from the heel of the foot at a position corresponding to the inner region.

[0014] The effects of the invention

[0015] With the insoles disclosed herein, a person can stand and walk in a stable posture. With the footwear with insoles disclosed herein, a person can stand and walk in a stable posture. Attached Figure Description

[0016] Figure 1A This is a front view of a first embodiment of footwear with an insole, viewed from the heel side of the foot.

[0017] Figure 1B yes Figure 1A The image shown is a side view of the left half of the foot.

[0018] Figure 2A This is a schematic plan view of the left and right halves of a footwear with an insole according to the seventh embodiment.

[0019] Figure 2B yes Figure 2A Frontal cross-section at line II-II.

[0020] Figure 3A This is a front view of a second embodiment of footwear with an insole, viewed from the heel side of the foot.

[0021] Figure 3B yes Figure 3A The image shown is a side view of the left half of the foot.

[0022] Figure 4A This is a front view of a third embodiment of footwear with an insole, viewed from the heel side of the foot.

[0023] Figure 4B yes Figure 4A The image shown is a side view of the left half of the foot.

[0024] Figure 5 This is a front view of a fourth embodiment of footwear with an insole, viewed from the heel side of the foot.

[0025] Figure 6 This is a front view of the fifth embodiment of a footwear with an insole, viewed from the heel side of the foot.

[0026] Figure 7 This is a front view of a sixth embodiment of footwear with an insole, viewed from the heel side of the foot.

[0027] Figure 8 This is a schematic plan view showing the left and right halves of the footwear with insoles provided in the eighth embodiment.

[0028] Figure 9 It is a schematic side cross-sectional view showing the insole, left foot, and bones.

[0029] Figure 10 This is a schematic plan view of the left and right halves of a shoe with a bottom, according to the ninth embodiment.

[0030] Figure 11 yes Figure 10 Frontal cross-section at line III-III.

[0031] Explanation of icon numbers

[0032] 10: Footwear

[0033] 13: Shoe upper

[0034] 14: Outsole

[0035] 15: Insoles

[0036] 16: Foot storage space

[0037] 21: Heel

[0038] 25: Heel area

[0039] 27, 28, 30, 31, 32: Side view

[0040] 40: Hole

[0041] 41: Incision area

[0042] 60: Padding

[0043] 64: Bottom

[0044] 66: Concave

[0045] C1: Centerline

[0046] D1: Inner region

[0047] D2: Outer region

[0048] θ1, θ2: Angles Detailed Implementation

[0049] (summary)

[0050] When a person stands barefoot on sand, grass, or soft soil, the heel bone is located on the outside of the foot. Therefore, the outer side of the heel sinks down, which is the natural state of a person, resulting in a stable standing posture and walking. Even when wearing footwear, such as shoes, this natural state is achieved through insoles or outsoles, thus forming the natural stable standing posture. When walking, the ideal walking posture is similar, with the foot landing on the outside of the heel, then passing over the outside of the metatarsal bones, and finally kicking off the ground with the toes.

[0051] The insoles and footwear disclosed herein are based on the technical concepts described above. The insoles are fixed to the footwear, or can be installed and removed relative to the footwear. The footwear is worn on a person's foot. Insoles are sometimes also referred to as insoles. The footwear has an upper and an outsole fixed to the upper. In this disclosure, several embodiments of the insoles and footwear are described based on the accompanying drawings. In this disclosure, in the drawings used to illustrate embodiments of the insoles and footwear, the same reference numerals are generally used to denote the same parts, and repeated descriptions are omitted.

[0052] (First Embodiment)

[0053] Figure 1A This is a front view of footwear type 10, viewed from the heel side. Figure 2A This is a plan view of footwear 10 viewed from directly above. "Directly above" refers to the direction directly above where gravity acts. Footwear 10 is, for example, a business leather shoe, consisting of a left half-foot section 11 fitted to the left foot F1 and a right half-foot section 12 fitted to the right foot F2. When viewed from above, the left half-foot section 11 and the right half-foot section 12 have a symmetrical shape; therefore, for convenience, the left half-foot section 11 will be used as an example for explanation. The left half-foot section 11 includes an upper 13, an outsole 14, and an insole 15.

[0054] like Figure 1B Thus, the upper 13 of the left half of the foot 11 serves as the main body for accommodating the left foot F1. The upper 13 is made of, for example, genuine leather or synthetic leather. The outsole 14 is made of, for example, genuine leather, synthetic leather, or synthetic resin. The upper 13 is fixed to the outsole 14 by stitching or vulcanization bonding. An insole 15 is provided inside the upper 13, forming a foot-accommodating space 16 in the left half of the foot 11 through the upper 13 and the insole 15.

[0055] Furthermore, a bottom 64 is provided between the outsole 14 and the insole 15. The bottom 64 is sometimes referred to as an intermediary. The bottom 64 is a sheet-like component made of fabric, synthetic resin, etc. The upper surface of the bottom 64 is generally flat. When viewed from above, the outer periphery of the bottom 64 is approximately the same as the outer periphery of the insole 15. The bottom 64 is fixed to the outsole 14. The insole 15 can be fixed to either the bottom 64 or the outsole 14, and the insole 15 can also be a structure that can be installed and removed relative to either the bottom 64 or the outsole 14. In addition, the upper 13 of the right half of the foot 12 is the main body for accommodating the right foot F2. The upper 13 and the insole 15 form a foot-accommodating space 16 in the right half of the foot 12.

[0056] The insole 15 has a padding 60. The padding 60 located on the left half of the foot 11 has a shape similar to that of the left half of the foot 11. The padding 60 located on the right half of the foot 12 has a shape similar to that of the right half of the foot 12. The padding 60 has a front end 62 and a rear end 63. The front end 62 is located near the toes, and the rear end 63 is located near the heel. The inner surface of the upper 13 is lined, but the lining is not shown in the illustration.

[0057] exist Figure 2A The diagram shows two tangent lines A1 and A2 that connect to both ends of the left half-foot 11 in the width direction, and two tangent lines B1 and B2 that connect to both ends of the padding 60 of the insole 15 in the width direction. Tangent line A1 is closest to the big toe when the left half-foot 11 is fitted to the left foot F1, and tangent line A2 is closest to the little toe. A center line C1 is positioned between the two tangent lines A1 and A2. The center line C1 is an imaginary line passing through the center of the left half-foot 11 and the padding 60 of the insole 15 in the width direction. When viewed from above, the left half-foot 11 is divided into an inner region D1 formed between the center line C1 and the tangent line A1, and an outer region D2 formed between the center line C1 and the tangent line A2. The four tangent lines A1, A2, B1, B2, and the center line C1 are parallel imaginary lines, i.e., straight lines. Tangent B1 is located between center line C1 and tangent A1. Tangent B2 is located between center line C1 and tangent A2. The padding 60 of the upper 13, the insole 15, and the outsole 14 are configured to cover the inner area D1 and the outer area D2.

[0058] For the right half of the foot 12, tangent A1 is closest to the big toe when the right half of the foot 12 is fitted with the right foot F2, and tangent A2 is closest to the little toe when the right half of the foot 12 is fitted with the right foot F2. For the right half of the foot 12, the center line C1 is an imaginary line passing through the center of the width direction of the right half of the foot 12 and the insole 15. When viewed from above, the right half of the foot 12 is divided into an inner region D1 formed between the center line C1 and the tangent A1, and an outer region D2 formed between the center line C1 and the tangent A2. Furthermore, in Figure 2A The image shows the skeleton of the left foot (F1) and the right foot (F2). From the toe side of the foot toward the heel side are the phalanges 17, metatarsals 18, tarsal bones 19, etc. Tarsal bones 19 include the cuneiform bone, scaphoid bone, and calcaneus 20.

[0059] When a person stands on a designated location E1 with their left foot (F1) fitted with the left half of the foot (11) and their right foot (F2) fitted with the right half of the foot (12), the outsole 14 of both the left and right half of the foot (11 and 12) contacts the location E1. The location E1 can be any surface such as a floor, ground, or asphalt road. Furthermore, of the two outsoles 14, the heel portion 21 bears a portion of the person's load from the heel, specifically from a position corresponding to the center of gravity of the foot. When... Figure 2A When viewed from above, with the left half of the foot 11 and the right half of the foot 12 in that position, the center of gravity Q1 of the foot is located within the lateral region D2, in the area where the calcaneus 20 exists. The center of gravity Q1 is located between the front end 62 and the rear end 63 along the direction of the center line C1.

[0060] like Figure 1A Thus, when viewed from the front, the heel portion 21 of the two outsoles 14 has an inner edge 30 and a side 31. The inner edge 30 is located in the inner region D1, that is, between the center line C1 and the tangent A1. The side 31 is located in the outer region D2, that is, between the center line C1 and the tangent A2. The inner edge 30 extends linearly along the thickness direction, that is, the height direction, of the outsole 14. The outsole 14 has an inclined surface 31A that is chamfered into a curved or arc shape from the side 31 toward the bottom surface 31B and is connected to the bottom surface 31B. The inclined surface 31A is... Figure 1A A frontal view of the outsole 14 shown, and Figure 1B In any of the side views of the outsole 14 shown, it is inclined relative to the bottom surface 31B. Furthermore, the bottom surface 31B is flat.

[0061] When the heel portion 21 of the outsole 14 is viewed from the front, the thickness of the area corresponding to the medial region D1 is approximately constant. That is, when the heel portion 21 of the outsole 14 is viewed from the front, the thickness near the side 31 of the lateral region D2 is less than the thickness of other parts of the heel portion 21. In other words, regarding the thickness of the heel portion 21 from the medial region D1... Figure 1BRegarding the compressive load in the thickness direction applied to the heel 50 of the left foot F1 and the heel of the right foot F2 towards the heel portion 21 of the outsole 14, the rigidity of the outer region D2 is lower than that of the inner region D1. Therefore, the elastic deformation of the outer region D2 exceeds that of the inner region D1. That is, the load borne by the outsole 14 from the heel in the outer region D2 is greater than the load borne by the outsole 14 from the heel in the inner region D1. Specifically, the outsole 14 of the left half of the foot 11 and the outsole 14 of the right half of the foot 12 can mainly bear the load at the position corresponding to the center of gravity Q1. Therefore, a person can stand in a stable posture and walk and run in a stable posture.

[0062] In the insole 15, in the area corresponding to the outer part of the heel 50, the outsole 14 bears the load from the heel 50 in the outer region D2. When a person stands barefoot on sand, grass, or soft soil, the calcaneus 20 is located further outward than the center line C1, so the outer part of the heel 50 sinks down, becoming the person's natural state, resulting in a stable standing posture and stable walking. Just as there is a depression with the same shape as the calcaneus 20 in the insole 15 of business shoes and other footwear 10, further outward than the heel 50, the outer part of the heel 50 sinks down, similar to standing barefoot on sand, grass, or soil, becoming the person's natural stable standing posture. When walking, one can also approach the ideal walking motion by landing on the outer part of the heel 50, then passing the outer part of the metatarsal 18, and finally kicking off the ground with the toes.

[0063] Specifically, improved standing and walking posture reduces additional strain on the knees, ankles, and lower back, making walking easier. Furthermore, toes move more freely, and their range of motion increases. This helps reduce and prevent hallux valgus (bunions), pronation (outward turning of the foot), floating toes, and ingrown toes. Additionally, improved motor function allows for greater use of the feet in all sports, not just walking and running. Finally, a sudden tightening of the anus engages the gluteal muscles (gluteus maximus), resulting in a feeling of lifting the buttocks.

[0064] (Second Embodiment)

[0065] Figure 3A This is a front view showing a second embodiment of footwear 10. Furthermore, Figure 2A The plan view of the left half of the foot 11 and the right half of the foot 12 shown also applies. Figure 3A Footwear 10. Figure 3A The footwear 10 shown is, for example, athletic shoes. Figure 3B It means Figure 3A A side view of the left half of the foot 11. When viewed from the front, the heel 21 of the two outsoles 14 has a position... Figure 2AThe inner edge 30 of the inner region D1, the side surface 32 located in the outer region D2, and the bottom surface 32A connected to the side surface 32. The bottom surface 32A is flat. The side surface 32 is... Figure 3A A frontal view of the outsole 14 shown, and Figure 3B In any of the side views of the outsole 14 shown, it is inclined relative to the bottom surface 32A. The thickness of the portion of the outsole 14 corresponding to the outer region D2 increases as it approaches the bottom surface 32A. In contrast, the thickness of the portion of the outsole 14 corresponding to the inner region D1 is approximately constant.

[0066] That is, when viewing the heel portion 21 of the outsole 14 from the front, the thickness near the side 32 of the outer region D2 is less than the thickness of other parts of the heel portion 21. In other words, regarding the thickness of the heel portion 21 from the outer region D2... Figure 3B In terms of the rigidity of the compressive load in the thickness direction applied to the heel 50 of the left foot F1 and the heel of the right foot F2 towards the heel portion 21 of the outsole 14, the rigidity of the outer region D2 is lower than that of the inner region D1. Therefore, the load borne by the outsole 14 from the heel in the outer region D2 exceeds the load borne by the heel in the inner region D1. Therefore, the second embodiment of footwear 10 can achieve the same effect as the first embodiment of footwear 10. By tilting the portion of the footwear 10, such as business shoes, corresponding to the outer side of the heel 50, inward, the outer side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or soil, resulting in a stable standing posture. When walking, one can approach the ideal walking posture of landing on the outer side of the heel 50, then passing the outer side of the metatarsal 18, and finally kicking off the ground with the toes.

[0067] (Third Embodiment)

[0068] exist Figure 4A A third embodiment of footwear 10 is shown. Furthermore, Figure 2A The plan view of the left half of the foot 11 and the right half of the foot 12 shown also applies. Figure 4A Footwear 10. Figure 4A The footwear 10 shown is, for example, a low-cut shoe. Two outsoles 14 have heel portions 25 at positions corresponding to the heels of the left foot F1 and the right foot F2. The heel portions 25 protrude in the thickness direction, i.e., the height direction, of the outsole 14. The heel portions 25 are, for example, made by covering a synthetic resin core with rolled leather. The heel portions 25 are fixed to the outsole 14 using nails. Figure 4B yes Figure 4A A side view of the left half of the foot, number 11.

[0069] exist Figure 4AThe center line C2 in the width direction of the heel portion 25 is shown. The center line C2 intersects the center line C1 at a 90-degree angle. The center line C2 is an imaginary line passing through the center of the upper end 29 of the heel portion 25 in the width direction. The heel portion 25 has a side surface 26, a side surface 27, a side surface 28, and a bottom surface 28A. The side surface 26 is located in the inner region D1 and extends in a straight line. The side surface 26 is inclined relative to the center line C2 as it moves away from the upper 13 and closer to the center line C2. The side surfaces 27 and 28 are located in the outer region D2. The upper 13, the padding 60 of the insole 15, and the heel portion 25 are arranged throughout the inner region D1 and the outer region D2.

[0070] Side 27 is connected to the outsole 14. Side 27 is inclined relative to the center line C2 as it moves away from the upper 13 and closer to the center line C2. The angle of the acute angle formed between side 26 and the center line C2 is the same as the angle of the acute angle formed between side 27 and the center line C2. Side 27 extends in a straight line. Side 28 connects to side 27 and the bottom surface 28A. Figure 4A The front view of the heel 25 shown, and Figure 4B In any of the side views of the heel portion 25 shown, the side surface 28 has a curved or arcuate shape. The bottom surface 28A is flat. The area of ​​the portion of the front end face, i.e., the lower end face, of the heel portion 25 having the above structure, located in the outer region D2, is narrower than the area of ​​the portion located in the inner region D1. The side surface 26 is inclined relative to the centerline C2. Figure 4A For convenience, the connection between the side surface 26 and the bottom surface 28A is shown as an edge, but the connection between the side surface 26 and the bottom surface 28A is actually chamfered into a curved shape or an arc shape.

[0071] When the left half of the foot 11 is fitted onto the left foot F1 and the right half of the foot 12 is fitted onto the right foot F2, so that the lower surfaces of the two heel portions 25 are in contact with the area E1 and the person is standing, the center of gravity Q1 is located at the position corresponding to the outer region D2 of the heel portion 25. Furthermore, the area of ​​the portion of the front surface, i.e., the lower surface, of the heel portion 25 located in the outer region D2 is narrower than the area of ​​the portion located in the inner region D1. Therefore, the left half of the foot 11... Figure 4A The middle part tends to tilt in the direction that separates from the right half of the foot 12. Additionally, the right half of the foot 12... Figure 4AThe heel 50 tends to tilt in the direction separating from the left half of the foot 11. As a result, the load borne by the heel in the outer region D2 of the heel 25 exceeds the load borne by the heel in the inner region D1. Therefore, the third embodiment of the footwear 10 can achieve the same effect as the first embodiment of the footwear 10. By tilting the outer side of the heel 50 in footwear 10 such as low-cut shoes inward, the outer side of the heel 50 sinks down, similar to standing barefoot on sand, grass, or soil, resulting in a stable standing posture. When walking, one can approach the ideal walking posture by landing on the outer side of the heel 50, then passing the outer side of the metatarsal 18, and finally kicking off the ground with the toes.

[0072] (Fourth Embodiment)

[0073] exist Figure 5 The fourth embodiment of footwear 10 is shown. This fourth embodiment of footwear 10 is an example where the width of the heel portion 25 is narrower than that shown in FIG. 4. The upper 13, the padding 60 of the insole 15, and the heel portion 25 are arranged throughout the inner region D1 and the outer region D2. Furthermore, the boundary between the side surface 28 and the bottom surface 28A is located on the center line C2. Therefore, the bottom surface 28A, located in the inner region D1, contacts the area E1, while the portion of the heel portion 25 located in the outer region D2 hardly contacts the area E1.

[0074] Therefore, the area of ​​the portion of the heel 25 located in the outer region D2 is narrower than the area of ​​the portion located in the inner region D1. Consequently, the left half of the foot 11 tends to tilt towards the side 28 towards the location E1. Similarly, the right half of the foot 12 tends to tilt towards the side 28 towards the location E1. As a result, the load borne by the heel in the outer region D2 of the heel 25 exceeds the load borne by the heel in the inner region D1. The fourth embodiment of the footwear 10 achieves the same effect as the first embodiment of the footwear 10. By tilting the outer side of the heel 50 in footwear 10, such as low-cut shoes, inward, the outer side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or soil, resulting in a stable standing posture. During walking, this approach resembles an ideal walking motion, where the heel 50 lands on its outer side, then passes the outer side of the metatarsal 18, and finally kicks off the ground with the toes.

[0075] (Fifth Embodiment)

[0076] Figure 6This is a front view showing a fifth embodiment of footwear 10. The fifth embodiment of footwear 10 is an example where the width of the heel portion 25 narrows as it approaches the bottom surface 26A. The upper 13, the padding 60 of the insole 15, and the heel portion 25 are arranged across the inner region D1 and the outer region D2. Side 26 is arranged in the inner region D1, and side 27 is arranged in the outer region D2. The distance between the upper end of side 26 and the center line C2 is the same as the distance between the upper end of side 27 and the center line C2. Furthermore, the angle of the acute angle between side 26 and the center line C2 is smaller than the angle of the acute angle between side 27 and the center line C2. Furthermore, the bottom surface 26A of the heel portion 25 is connected to side 26 and side 27. The bottom surface 26A is flat, and the connection points between the bottom surface 26A and side 26, and between the bottom surface 26A and side 27, can be any of the following shapes: angular, curved, or arc-shaped. The bottom surface 26A is configured to cover both the inner region D1 and the outer region D2.

[0077] The area of ​​the outer region D2 of the heel portion 25, i.e., the bottom surface 26A, where it touches the ground with the location E1, is larger than the area of ​​the inner region D1. As a result, the load borne by the heel in the outer region D2 of the heel portion 25 exceeds the load borne by the heel in the inner region D1. Therefore, in the fifth embodiment of the footwear 10, the outer region D2 of the heel portion 25 easily bears the load of the center of gravity Q1, achieving the same effect as in the first embodiment of the footwear 10. Figure 2A Similarly, in the example described, the calcaneus 20, where the body load is greatest, is located further outward than the center line C1. Therefore, by aligning the heel 25 of the footwear 10 with the position of the calcaneus 20 and offsetting it outward, the heel 25 of the footwear 10 can firmly bear the load, reducing the burden on the ankle and knee, thus stabilizing the posture. This also allows for an ideal walking motion, approaching the ideal of landing on the outside of the heel 50, then passing the outside of the metatarsal 18, and finally kicking off the ground with the toes.

[0078] (Sixth Embodiment)

[0079] exist Figure 7 The sixth embodiment of footwear 10 is shown. This sixth embodiment of footwear 10 is an example where the width of the heel portion 25 narrows as it approaches the bottom surface 26A. Furthermore, Figure 7 The width of the heel portion 25 shown is less than Figure 6The width of the heel portion 25 is shown. The upper 13, the padding 60 of the insole 15, and the heel portion 25 are arranged across the inner region D1 and the outer region D2. The angle of the acute angle between the side 26 and the center line C2 is the same as the angle of the acute angle between the side 27 and the center line C2. The distance between the upper end of the side 26 and the center line C2 is less than the distance between the upper end of the side 27 and the center line C2. Therefore, the area of ​​the front end surface of the heel portion 25, i.e., the bottom surface 26A, that touches the ground in the outer region D2 is larger than the area of ​​the area that touches the ground in the inner region D1. Therefore, in the sixth embodiment of the footwear 10, the heel portion 25 in the outer region D2 easily bears the load of the center of gravity Q1, achieving the same effect as in the first embodiment of the footwear 10. Figure 2A Similarly, in the example described, the calcaneus 20, where the body load is greatest, is located further outward than the center line C1. Therefore, by aligning the heel 25 of the footwear 10 with the position of the calcaneus 20 and offsetting it outward, the heel 25 of the footwear 10 can firmly bear the load, reducing the burden on the ankle and knee, thus stabilizing the posture. This also allows for an ideal walking motion, approaching the ideal of landing on the outside of the heel 50, then passing the outside of the metatarsal 18, and finally kicking off the ground with the toes.

[0080] (Seventh Embodiment)

[0081] Figure 2A The insole 15 shown can be used in all of the following embodiments of footwear 10: the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, and the sixth embodiment. Figure 2B and Figure 9 Thus, both insoles 15 have a pad 60, a raised portion 61 rising from the outer periphery of the pad 60, and a hole 40 penetrating the pad 60 in the thickness direction. The raised portion 61 is provided in a manner that bends from the outer periphery of the pad 60. In addition, the raised portion 61 is provided in a region from approximately the center to the rear end 63 in the front-rear direction along the center line C1. The pad 60 contacts a portion of the lower surface of the heel 50 of the left foot F1 and a portion of the lower surface of the heel of the right foot F2, and the raised portion 61 contacts a portion of the side of the heel 50 of the left foot F1 and a portion of the side of the heel of the right foot F2.

[0082] When viewed from above, the perforation 40 is positioned approximately between the center and the rear end 63 of the insole 15 along the direction of the centerline C1. When viewed from above, the inner circumferential shape of the perforation 40 is ideally, for example, similar to that viewed from above. Figure 9The lower end 20A of the calcaneus 20 shown has the same shape. The center of gravity Q1 is located in the area where the hole 40 is provided. When viewed from above, the center of gravity Q1 is located approximately in the center of the hole 40 in the direction along the center line C1. Furthermore, when viewed from above, the area of ​​the portion of the hole 40 disposed in the outer region D2 exceeds the area of ​​the portion disposed in the inner region D1. When viewed from above, the planar shape of the portion of the hole 40 disposed in the inner region D1 is, for example, crescent-shaped. When viewed from above, the planar shape of the portion of the hole 40 disposed in the outer region D2 is, for example, trapezoidal. When viewed from above, the rear end of the portion of the hole 40 disposed in the outer region D2 is located between the rear end of the portion of the hole 40 disposed in the inner region D1 and the rear end 63 of the pad 60. Additionally, when viewed from above, the inner circumference shape of the hole 40 may also be circular, elliptical, or other shapes.

[0083] Furthermore, a portion of the hole 40 is provided in the raised portion 61. The inner circumferential surface of the hole 40 is gently curved relative to the inner and outer surfaces of the gasket 60 for connection. Figure 2B Thus, when viewed from a frontal longitudinal section, the inner circumferential surface of the hole 40 is inclined relative to the upper surface of the bottom 64. The inner circumferential surface of the hole 40 is inclined in a direction in which the width of the hole 40 narrows as it approaches the bottom 64. In a longitudinal section along the width direction of the left half-foot 11, the angle θ1 formed by the acute angle between the inner circumferential surface of the hole 40 located in the inner region D1 and the upper surface of the bottom 64 is smaller than the angle θ2 formed by the acute angle between the inner circumferential surface of the hole 40 located in the outer region D2 and the upper surface of the bottom 64. Both angles θ1 and θ2 are less than 90 degrees.

[0084] Furthermore, such as Figure 2A and Figure 9 Thus, the surface of the insole 15 has a support portion 65 protruding in the thickness direction. When viewed from above, the shape of the support portion 65 can be any of the following: elliptical, circular, etc. When viewed from above, the area where the support portion 65 is located can be set in the area where the metatarsal 18 is located, or it can be set across the areas where both the metatarsal 18 and the tarsal 19 are located.

[0085] Furthermore, when the left half of the foot 11 is fitted onto the left foot F1 and the right half of the foot 12 is fitted onto the right foot F2, and the person stands in place E1, a portion of the lower surface of the heel 50 of the left foot F1 and a portion of the lower surface of the heel 50 of the right foot F2 sink into the hole 40 of the insole 15, respectively. Therefore, for both the left foot F1 and the right foot F2, the 28 bones of each foot are in their normal position. Consequently, the load borne by the outsole 14 from the heel in the outer region D2 exceeds the load borne by the heel 50 in the inner region D1. Therefore, the effects described in the first embodiment of the footwear 10 are further enhanced.

[0086] If holes 40 are provided in the insole 15, the bones of the left foot F1 and right foot F2 are raised, creating gaps between the lower surfaces of the left foot F1 and right foot F2 and the insole 15. Additionally, the support portion 65 supports the lower surfaces of the left foot F1 and right foot F2. Therefore, the left foot F1 and right foot F2 easily form an arch shape in the width direction. This facilitates the absorption of impact from the ground, reducing the burden on the knees, ankles, and lower back. Furthermore, the support portion 65 is located in the gaps between the lower surfaces of the left foot F1 and right foot F2 and the insole 15, making it easier to keep a portion of the lower surface of the heel 50 of the left foot F1 and a portion of the lower surface of the heel of the right foot F2 sinking into the holes 40 of the insole 15, thus providing an effective fit.

[0087] Furthermore, the inner circumferential surface of the hole 40 is inclined relative to the upper surface of the bottom 64. In the width direction of the left half of the foot 11, the angle θ1 formed between the portion of the inner circumferential surface of the hole 40 located in the inner region D1 and the upper surface of the bottom 64 is smaller than the angle θ2 formed between the portion of the inner circumferential surface of the hole 40 located in the outer region D2 and the upper surface of the bottom 64. Both angles θ1 and θ2 are less than 90 degrees. Therefore, the heel 50 can easily sink smoothly along the inner circumferential surface of the hole 40 through the lower surface of the heel 50, and the portion of the lower surface of the heel 50 near the little toe in the inner circumferential surface of the hole 40 is supported, thereby positioning the heel 50 relative to the insole 15 in the width direction.

[0088] Therefore, by keeping the lower end 20A of the calcaneus 20 directly above the hole 40, the load borne by the heel portion 21 from the heel 50 at the position corresponding to the outer region D2 can exceed the load borne by the heel portion 21 from the heel 50 at the position corresponding to the inner region D1, thereby further improving the effect of the first embodiment.

[0089] (Eighth Embodiment)

[0090] Figure 8 The insole 15 shown can be used in all of the following embodiments of footwear 10: the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, and the sixth embodiment. Each of the two insoles 15 has a cutout 41 in its padding 60. Furthermore, the shape of the cutout 41 is arbitrary. Moreover, the center of gravity Q1 is located within the area where the cutout 41 is provided. In the cutout 41, the area of ​​the outer region D2 exceeds the area of ​​the inner region D1.

[0091] Furthermore, when the left half of the foot 11 is fitted onto the left foot F1 and the right half of the foot 12 is fitted onto the right foot F2, and a person stands in place E1, portions of the heel 50 of the left foot F1 and the heel surface of the right foot F2 sink into the cutout 41 of the insole 15. Therefore, the load borne by the outsole 14 from the heel in the outer region D2 exceeds the load borne by the heel in the inner region D1. This further enhances the effect described in the first embodiment of the footwear 10.

[0092] also, Figure 2A and Figure 8 The insole 15 shown can be installed in the foot chamber of a footwear, which has an outsole without chamfered sides 31, sloping sides 27, 28, 32, etc. In this case, when the left half of the foot is fitted onto the left foot and the right half onto the right foot, and the person is standing on the ground, portions of the surfaces of the heels of the left and right feet sink into the holes 40 or cutouts 41 of the insole 15, respectively. Therefore, the load borne by the outsole from the heel in the outer region D2 exceeds the load borne by the heel in the inner region D1. Thus, the same effect as described in the first embodiment of the footwear can be obtained.

[0093] (Ninth Embodiment)

[0094] Figure 10 and Figure 11 The left half-foot portion 11 and the right half-foot portion 12 shown do not include the insole 15. The bottom 64 of the left half-foot portion 11 and the right half-foot portion 12 each have a recess 66. When viewed from directly above, the recess 66 is positioned approximately between the center and the rear end 67 of the bottom 64 along the centerline C1. The upper surface of the bottom 64 faces the foot receiving space 16, and the recess 66 is provided on the upper surface of the bottom 64. The recess 66 is formed by recessing a portion of the upper surface of the bottom 64 in the thickness direction of the bottom 64.

[0095] When viewed from above, the recess 66 is positioned approximately between the center of the bottom 64 and the rear end 67 in the direction along the centerline C1. Ideally, the shape of the recess 66, when viewed from above, is similar to that viewed from above. Figure 9The lower end 20A of the calcaneus 20 shown has the same shape. The center of gravity Q1 is located in the area where the recess 66 is provided. When viewed from above the bottom 64, the center of gravity Q1 is located approximately in the center of the recess 66 along the centerline C1. Furthermore, when viewed from above the bottom 64, the area of ​​the portion of the recess 66 disposed in the outer region D2 exceeds the area of ​​the portion disposed in the inner region D1. When viewed from above the bottom 64, the planar shape of the portion of the recess 66 disposed in the inner region D1 is, for example, crescent-shaped. When viewed from above the bottom 64, the planar shape of the portion of the recess 66 disposed in the outer region D2 is, for example, trapezoidal. When viewed from above the bottom 64, the rear end of the portion of the recess 66 disposed in the outer region D2 is located between the rear end of the portion of the recess 66 disposed in the inner region D1 and the rear end 67 of the bottom 64. Furthermore, when viewed from above the bottom 64, the shape of the recess 66 can be circular, elliptical, or other shapes.

[0096] Furthermore, when the left half of the foot 11 is fitted onto the left foot F1 and the right half of the foot 12 is fitted onto the right foot F2, and the person stands in place E1, a portion of the lower surface of the heel 50 of the left foot F1 and a portion of the lower surface of the heel 50 of the right foot F2 sink into the recess 66 of the bottom 64, respectively. Therefore, for both the left foot F1 and the right foot F2, the 28 bones of each foot are in their normal position. Therefore, the load borne by the outsole 14 from the heel in the outer region D2 exceeds the load borne by the heel in the inner region D1. Therefore, the same effect as described in the first embodiment of the footwear 10 can be obtained. Furthermore, in Figure 10 and Figure 11 In the middle, the bottom 64 can be used in all of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment, and the eighth embodiment of the footwear 10.

[0097] Furthermore, when both the left half-foot portion 11 and the right half-foot portion 12 include an insole 15 with a hole 40 and a bottom 64 with a recess 66, when the insole 15 is viewed from above, the area where the hole 40 is located overlaps at least partially with the area where the recess 66 is located. Also, when both the left half-foot portion 11 and the right half-foot portion 12 include an insole 15 with a cutout 41 and a bottom 64 with a recess 66, when the insole 15 is viewed from above, the area where the cutout 41 is located overlaps at least partially with the area where the recess 66 is located.

[0098] (Supplementary Explanation)

[0099] When a person stands barefoot on sand, grass, or soft soil, as... Figure 2A , Figure 8As illustrated in the example, the calcaneus 20 is located further outward than the center line C1, resulting in a state where the heel (outer side) of the foot sinks in, achieving a natural and correct standing posture, a stable standing posture, and a stable gait. Even when wearing shoes, this natural state is achieved through the insoles, soles, and heels of the shoes, thus achieving a natural and stable standing posture. During walking, this results in an ideal gait where the foot lands close to the outer side of the heel, then passes over the outer side of the metatarsal bones, and finally kicks off the ground with the toes. The insoles, outsoles, and soles of this disclosure all achieve this effect.

[0100] An example of the technical meaning of the items described in this embodiment is as follows. Upper 13 is an example of a main body portion. Outsole 14, heel portion 21, and heel portion 25 are examples of grounding portions. Footwear 10 is an example of a footwear type. Centerline C1 is an example of a centerline. Inner region D1 is an example of an inner region. Outer region D2 is an example of an outer region. Angle θ1 is an example of a first angle, and angle θ2 is an example of a second angle. Bottom 64 is an example of a bottom. Recess 66 is an example of a recess. The chamfer provided on side 31, the inclined surface constituting side 32, side 27, and side 28 are examples of a setting mechanism. Side 27, side 28, side 30, side 31, and side 32 are examples of sides. Foot receiving space 16 is an example of a foot receiving space.

[0101] Insole 15 is one example of an insole. Liner 60 is one example of a lining. Hole 40 and cutout 41 are examples of auxiliary mechanisms. Alternatively, a structure can be used where recesses or depressions replace the holes or cutouts of the insole, making the insole partially thinner than other parts. Furthermore, in the figures, there are areas shown as having corners in components such as the heel, heel counter, and outsole; however, this is only for illustration purposes. In reality, these areas have smooth chamfers or smoothly curved shapes.

[0102] [Industry availability]

[0103] This disclosure can be used as an insole and footwear installed in footwear worn on a person's feet.

Claims

1. An insole having a liner placed in the foot-receiving space of a shoe, characterized in that, The padding is divided into an inner region and an outer region, which are arranged across a centerline in the width direction when viewed from above. When viewed from above, the inner region of the padding is the area where the big toe of the foot is located. When viewed from above, the outer region of the padding is the area where the little toe of the foot is located. The padding has an auxiliary mechanism including a hole extending through the padding in the thickness direction, such that the load borne by the grounding portion of the footwear from the heel at a position corresponding to the outer region exceeds the load borne by the grounding portion from the heel at a position corresponding to the inner region. The hole is positioned such that, when viewed from above, it is located in the area to be installed in a manner corresponding to the center of gravity of the foot, with the lower end of the heel bone of the foot directly above the hole. The inner circumferential shape of the hole extends over both the inner and outer regions, with the area disposed in the outer region exceeding the area disposed in the inner region. The portion disposed in the inner region has a crescent-shaped planar shape. The portion of the hole located in the outer region has a trapezoidal planar shape. The rear end of the portion of the hole disposed in the outer region is located between the rear end of the portion of the hole disposed in the inner region and the rear end of the gasket, thereby, The hole is shaped to resemble the lower end of the calcaneus when viewed from above.

2. The insole according to claim 1, characterized in that, The auxiliary mechanism is formed by a recess in the thickness direction of the gasket, which is replaced by the hole.

3. A type of footwear comprising: a main body for inserting a person's foot; and a grounding portion fixed to the main body and grounded, characterized in that... The main body includes: a foot receiving space for inserting a foot; and The insole according to claim 1 is disposed in the foot receiving space. The main body is divided into an inner region and an outer region of the main body, which are arranged across a centerline in the width direction of the main body when viewed from above. When viewed from above, the inner region of the main body is the area where the big toe of the foot is located, and the outer region of the main body is the area where the little toe of the foot is located. When viewed from above, the grounding portion is disposed covering both the inner and outer regions of the main body. It also has a setting mechanism that causes the load borne by the grounding part from the heel of the foot at the position corresponding to the outer region to exceed the load borne by the grounding part from the heel of the foot at the position corresponding to the inner region. The setting mechanism is configured such that, when viewed from the front side of the foot from the heel side, the thickness of the part corresponding to the inner region of the main body is approximately constant, and the thickness of the part corresponding to the outer region of the main body is less than the thickness of the part corresponding to the inner region of the main body.

4. The footwear according to claim 3, characterized in that, When viewed from the front side of the foot from the heel side, the thickness of the setting mechanism corresponding to the outer region of the main body increases as it approaches the inner region of the main body.

5. The footwear according to claim 3, characterized in that, The auxiliary mechanism is formed by a recess in the thickness direction of the gasket, which is replaced by the hole.

6. A type of footwear comprising: a main body for inserting a person's foot; and a grounding portion fixed to the main body and grounded, characterized in that... The main body is divided into an inner region and an outer region, which are arranged across a centerline in the width direction of the main body when viewed from above. When viewed from above, the inner region is the area where the big toe of the foot is located. The outer region is the area where the little toe of the foot is located. When viewed from above, the grounding portion is disposed throughout both the inner and outer regions. The main body has a foot receiving space for inserting a foot, and is provided with a bottom portion that is fixed to the grounding portion and forms the bottom of the foot receiving space. The bottom has an auxiliary mechanism at the portion facing the foot receiving space and where the heel of the foot is placed. The auxiliary mechanism includes a recess, and ensures that the load borne by the grounding portion of the footwear from the heel at the position corresponding to the outer region exceeds the load borne by the grounding portion from the heel at the position corresponding to the inner region. The recess is positioned such that, when viewed from above the main body, it is located in the area to be provided at a position corresponding to the center of gravity of the foot, and the lower end of the heel bone is located directly above the recess. The inner circumferential shape of the recess extends over both the inner and outer regions, with the area disposed in the outer region exceeding the area disposed in the inner region. The portion disposed in the inner region has a crescent-shaped planar shape. The portion of the recess located in the outer region has a trapezoidal planar shape. The rear end of the portion of the recess disposed in the outer region is located between the rear end of the portion of the recess disposed in the inner region and the rear end of the bottom, thereby, The recess is shaped to resemble the lower end of the heel bone when viewed from above.

7. The footwear according to claim 6, characterized in that, It has a setting mechanism that causes the load borne by the grounding part from the heel of the foot at the position corresponding to the outer region to exceed the load borne by the grounding part from the heel of the foot at the position corresponding to the inner region. The setting mechanism is configured such that, when viewed from the front side of the foot from the heel side, the thickness of the part corresponding to the inner region of the main body is approximately constant, and the thickness of the part corresponding to the outer region of the main body is less than the thickness of the part corresponding to the inner region of the main body.

8. The footwear according to claim 7, characterized in that, When viewed from the front side of the foot from the heel side, the thickness of the setting mechanism corresponding to the outer region of the main body increases as it approaches the inner region of the main body.

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