Insole and shoes

Abstract

Provided is a shoe pad for footwear such that a person can stand in a stable posture and walk in a stable posture. An insole (15) having a pad (60) placed on a foot insertion portion of a shoe is configured, and in the insole (15), the pad (60) is divided into an inner region (D1) and an outer region (D2) disposed across a center line (C1) in the width direction in a plan view of the pad (60), the inner region (D1) being a region in which the hallux of the foot is located in the plan view of the pad (60), and the outer region (D2) being a region in which the hallux of the foot is located in the plan view of the pad (60). The outer region D2 is a region in which the little toe of the foot is located, and the pad 60 has a hole 40 that causes the load received from the heel of the foot at a position corresponding to the outer region D2 by the ground contact portion of the shoe to exceed the load received from the heel of the foot at a position corresponding to the inner region D1 by the ground contact portion of the shoe.

Description

Technical Field

[0001] The present disclosure relates to an insole provided for footwear worn on a person's foot and the footwear. Background Art

[0002] Patent Document 1 describes an example of an insole for use inside footwear worn on a person's foot. The insole described in Patent Document 1 includes a toe portion formed to accommodate the toes; a protruding portion formed to accommodate the front ends of the metatarsal bones, which extend most to the left and right of the width of the foot; an arch portion formed to accommodate the area from the metatarsal bones to just below the lateral malleolus; and at least two foamed resin layers, including a heel portion formed to accommodate the calcaneus just below the lateral malleolus and behind it, and disposed on the sole of the shoe.

[0003] The insole described in Patent Document 1 includes a support plate bonded to the lower surface of the two layers and formed from a harder material than the second layer of foamed resin. Furthermore, the support plate described in Patent Document 1 has an opening formed therein for the heel portion of the first and second layers to receive and absorb the load applied by the heel. Furthermore, Patent Document 2 describes a design in which the thickness of the insole corresponding to the heel is thinner than that of the portions to its left and right.

[0004] Prior art literature Patent Literature Patent Document 1: Japanese Patent No. 7090857 Patent Document 2: Japanese Patent Application Laid-Open No. 2006-102335 Summary of the Invention Problems to be solved by the invention The inventors of the present application have recognized that the insoles described in Patent Documents 1 and 2 still have room for improvement in order to enable a person to stand and walk in a stable posture.

[0005] An object of the present disclosure is to provide an insole and footwear that enable a person to stand and walk in a stable posture.

[0006] Technical means to solve the problem The present invention discloses an insole having a liner placed in a foot-receiving space of a shoe, wherein the insole is divided into an inner area and an outer area arranged across a center line in a width direction when the insole is viewed from above, wherein the inner area is an area where the big toe of the foot is located when the insole is viewed from above, and the outer area is an area where the little toe of the foot is located when the insole is viewed from above, and wherein the insole has an auxiliary mechanism that causes a load borne by a ground contact portion of the shoe from the heel at a position corresponding to the outer area to exceed a load borne by the ground contact portion from the heel of the foot at a position corresponding to the inner area.

[0007] The present invention discloses a pair of shoes comprising: a main body for inserting a human foot; and a grounding portion fixed to the main body and grounded. In the footwear, the main body is divided into an inner area and an outer area, which are arranged across a center line in a width direction of the main body when the main body is viewed from above. When the main body is viewed from above, the inner area is an area where the big toe of the foot is located, and when the main body is viewed from above, the outer area is an area where the little toe of the foot is located. When the main body is viewed from above, the grounding portion is arranged across the inner area and the outer area, and the grounding portion has a setting mechanism, which makes the load borne by the grounding portion from the heel of the foot at a position corresponding to the outer area exceed the load borne by the grounding portion from the heel of the foot at a position corresponding to the inner area.

[0008] Effects of the Invention By using the insole of the present invention, a person can stand in a stable posture and walk in a stable posture. By using the footwear provided with the insole of the present invention, a person can stand in a stable posture and walk in a stable posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] [ Figure 1A ] is a front view of a first embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0010] [ Figure 1B ]yes Figure 1A Side view of the left half of the foot shown.

[0011] [ Figure 2A ] is a schematic plan view of the left and right half of the foot of the shoe provided with the insole according to the seventh embodiment.

[0012] [ Figure 2B ]yes Figure 2A Front cross-section view at line II-II.

[0013] [ Figure 3A ] is a front view of a second embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0014] [ Figure 3B ]yes Figure 3A Side view of the left half of the foot shown.

[0015] [ Figure 4A ] is a front view of a third embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0016] [ Figure 4B ]yes Figure 4A Side view of the left half of the foot shown.

[0017] [ Figure 5 ] is a front view of a fourth embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0018] [ Figure 6 ] is a front view of a fifth embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0019] [ Figure 7 ] is a front view of a sixth embodiment of footwear provided with an insole as viewed from the heel side of the foot.

[0020] [ Figure 8 ] is a schematic plan view of the left half and right half of the foot of the footwear provided with the insole according to the eighth embodiment.

[0021] [ Figure 9 ] is a schematic side sectional view showing the insole, left foot and bones.

[0022] [ Figure 10 ] is a schematic plan view of the left half foot and the right half foot of the shoe provided with the bottom according to the ninth embodiment.

[0023] [ Figure 11 ]yes Figure 10 Frontal cross-section view at line III-III. DETAILED DESCRIPTION

[0024] (summary) When a person stands barefoot on sand, grass, or soft soil, the heel bone is located on the outside of the foot, so the outside of the heel sinks, creating a natural standing posture and a stable walking posture. Even when wearing footwear, such as shoes, this natural position is achieved using insoles or shoe outsoles, thereby maintaining a natural, stable standing posture. When walking, the person's foot strikes the ground from the outside of the heel, then passes the outside of the metatarsal bones, and finally kicks off the ground with the toes.

[0025] The insoles and footwear disclosed herein are based on the aforementioned technical concepts. The insoles are fixed to the footwear or can be installed and removed from the footwear. The footwear is mounted on a person's foot for use. The insoles are sometimes also called insoles. The footwear comprises 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 the drawings illustrating the embodiments of the insoles and footwear, identical components are generally designated by the same reference numerals, and duplicate descriptions are omitted.

[0026] (First embodiment) Figure 1A is a front view of the footwear 10 as viewed from the heel side, Figure 2A This is a plan view of the footwear 10 as viewed from directly above. "Directly above" refers to the direction of gravity. The footwear 10 is, for example, a business leather shoe. The footwear 10 comprises a left foot half 11, which fits on the left foot F1, and a right foot half 12, which fits on the right foot F2. When viewed from above, the left and right foot half 11, 12 have bilaterally symmetrical shapes. For convenience, the left foot half 11 will be used as an example. The left foot half 11 includes an upper 13, an outsole 14, and an insole 15.

[0027] like Figure 1B Thus, the upper 13 of the left foot half 11 serves as the main body for receiving 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 secured to the outsole 14 by sewing or vulcanization bonding. An insole 15 is provided within the upper 13. The upper 13 and insole 15 form a foot-receiving space 16 within the left foot half 11.

[0028] Furthermore, a bottom portion 64 is provided between the outsole 14 and the insole 15. The bottom portion 64 is sometimes also referred to as an intermediate member. The bottom portion 64 is a sheet-like member made of cloth, synthetic resin, or the like. The upper surface of the bottom portion 64 is generally flat. When the footwear 10 is viewed from above, the outer peripheral shape of the bottom portion 64 is generally the same as the outer peripheral shape of the insole 15. The bottom portion 64 is fixed to the outsole 14. The insole 15 can be fixed to the bottom portion 64 or the outsole 14, or the insole 15 can be installed and removed relative to the bottom portion 64 or the outsole 14. In addition, the upper 13 of the right half foot portion 12 is the main body portion that accommodates the right foot F2. The upper 13 and the insole 15 form a foot accommodating space 16 in the right half foot portion 12.

[0029] The insole 15 includes a lining 60. The lining 60 provided on the left foot half 11 has a shape similar to that of the left foot half 11. The lining 60 provided on the right foot half 12 has a shape similar to that of the right foot half 12. The lining 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 this is not shown.

[0030] exist Figure 2A In the figure, two tangent lines A1 and A2 connecting to the two ends of the left half foot 11 in the width direction, and two tangent lines B1 and B2 connecting to the two ends of the pad 60 of the insole 15 in the width direction are shown. When the left half foot 11 is assembled on the left foot F1, the tangent line A1 is closest to the big toe, and when the left half foot 11 is assembled on the left foot F1, the tangent line A2 is closest to the little toe. In addition, a center line C1 is arranged 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 pad 60 of the insole 15 in the width direction. When the left half foot 11 is viewed from above, it is divided into an inner area D1 formed between the center line C1 and the tangent line A1, and an outer area 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 imaginary lines parallel to each other, that is, straight lines. Tangent line B1 is located between center line C1 and tangent line A1. Tangent line B2 is located between center line C1 and tangent line A2. Upper 13, liner 60 of insole 15, and outsole 14 are arranged over medial area D1 and lateral area D2.

[0031] For the right half foot 12, the tangent line A1 is closest to the big toe when the right half foot 12 is mounted on the right foot F2, and the tangent line A2 is closest to the little toe when the right half foot 12 is mounted on the right foot F2. For the right half foot 12, the center line C1 is an imaginary line passing through the center of the right half foot 12 and the insole 15 in the width direction. When looking down at the right half foot 12, it is divided into an inner area D1 formed between the center line C1 and the tangent line A1, and an outer area D2 formed between the center line C1 and the tangent line A2. Furthermore, in Figure 2A 1 and 2 show the bones of the left foot F1 and the right foot F2. From the toe side toward the heel side of the foot, there are phalanges 17, metatarsals 18, tarsal bones 19, etc. The tarsal bones 19 include the cuneiform bone, the navicular bone, and the calcaneus 20.

[0032] When a person wears the left half foot 11 on the left foot F1 and the right half foot 12 on the right foot F2 and stands at a predetermined location E1, the outer sole 14 of the left half foot 11 and the outer sole 14 of the right half foot 12 are in contact with the location E1. The location E1 can be any of a floor, a ground, an asphalt road, etc. Moreover, of the two outer soles 14, the heel portion 21 receives a portion of the person's load from the heel of the foot, specifically, at a position corresponding to the center of gravity of the sole. When Figure 2A In this way, when the left and right foot halves 11 and 12 are viewed from above, the center of gravity Q1 of the sole is located within the lateral region D2 where the calcaneus 20 exists. The center of gravity Q1 is located between the front end 62 and the rear end 63 along the center line C1.

[0033] like Figure 1A Thus, when the heel portion 21 of the two outer soles 14 is viewed from the front, the heel portion 21 has an inner edge 30 and a side surface 31. The inner edge 30 is located in the inner region D1, that is, between the center line C1 and the tangent line A1. The side surface 31 is located in the outer region D2, that is, between the center line C1 and the tangent line A2. The inner edge 30 extends linearly along the thickness direction, that is, the height direction, of the outer sole 14. The outer sole 14 has an inclined surface 31A that is chamfered into a curved shape or an arc shape from the side surface 31 toward the bottom surface 31B and is connected to the bottom surface 31B. The inclined surface 31A is Figure 1A The front view of the outer sole 14 is shown, and Figure 1B In any of the side views of the outer sole 14 shown, the outer sole 14 is inclined relative to the bottom surface 31B. In addition, the bottom surface 31B is flat.

[0034] When the heel portion 21 of the outsole 14 is viewed from the front, the thickness of the portion corresponding to the medial region D1 is substantially constant. That is, when the heel portion 21 of the outsole 14 is viewed from the front, the thickness near the side surface 31 of the lateral region D2 is smaller than the thickness of other portions of the heel portion 21. In other words, Figure 1B In terms of the rigidity of the heel 50 of the left foot F1 and the heel of the right foot F2, which are shown as compressive loads in the thickness direction applied to the heel portion 21 of the outsole 14, the rigidity of the lateral region D2 is lower than that of the medial region D1. Therefore, the elastic deformation of the lateral region D2 exceeds that of the medial region D1. In other words, the load borne by the outsole 14 from the heel in the lateral region D2 exceeds the load borne by the outsole 14 from the heel in the medial region D1. Specifically, the outsole 14 of the left half foot 11 and the outsole 14 of the right half foot 12 can primarily bear the load at the position corresponding to the center of gravity Q1. This allows a person to stand, walk, and run in a stable posture.

[0035] In the insole 15, the outsole 14 receives load from the heel 50 in the outer region D2, corresponding to the area outside the heel 50. When a person stands barefoot on sand, grass, or soft soil, the calcaneus 20 is located outside the centerline C1. Therefore, the outer side of the heel 50 sinks, returning to the person's natural state, resulting in a stable standing posture and walking. Just as the insole 15 of footwear 10, such as business shoes, has a depression with the same shape as the calcaneus 20 outside the heel 50, the outer side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or soil, achieving a stable standing posture. When walking, the person can also approach the ideal walking posture, landing on the outer side of the heel 50, then passing the outer side of the metatarsal bones 18, and finally kicking off with the toes.

[0036] Specifically, standing and walking postures improve, reducing the burden on the knees, ankles, and waist, making walking more relaxed. Furthermore, the toes move smoothly, and the range of motion is expanded. This can help reduce and prevent hallux valgus. Furthermore, it can help reduce and prevent hallux valgus. Furthermore, it can help reduce and prevent floating toes. Furthermore, it can help reduce and prevent ingrown toenails. Furthermore, motor function improves, allowing the feet to unleash their potential in all activities, not just walking and running. Furthermore, the anus suddenly tightens, engaging the buttocks muscles (gluteus maximus) and creating a buttocks-lifting sensation.

[0037] (Second embodiment) Figure 3A 1 is a front view showing a second embodiment of the footwear 10. Figure 2A The plan view of the left half foot 11 and the right half foot 12 shown also applies to Figure 3A 10. Figure 3A The illustrated footwear 10 is, for example, an athletic shoe. Figure 3B Yes Figure 3A When the heel portion 21 of the two outsoles 14 is viewed from the front, the heel portion 21 has the Figure 2A The inner edge 30 of the inner area D1, the side surface 32 located in the outer area D2, and the bottom surface 32A connected to the side surface 32. The bottom surface 32A is flat. Figure 3A The front view of the outer sole 14 is shown, and Figure 3B The outer sole 14 is inclined relative to the bottom surface 32A in any of the side views shown. The thickness of the portion of the outer sole 14 corresponding to the outer side region D2 increases as it approaches the bottom surface 32A. In contrast, the thickness of the portion of the outer sole 14 corresponding to the inner side region D1 is substantially constant.

[0038] That is, when the heel portion 21 of the outsole 14 is viewed from the front, the thickness near the side surface 32 of the lateral region D2 is smaller than the thickness of other parts of the heel portion 21. Figure 3B In terms of the rigidity of the heel 50 of the left foot F1 and the heel of the right foot F2 in terms of the compressive load in the thickness direction applied to the heel portion 21 of the outsole 14, the rigidity of the lateral region D2 is lower than that of the medial region D1. Therefore, the load borne by the outsole 14 from the heel in the lateral region D2 exceeds the load borne by the heel in the medial region D1. Therefore, the second embodiment of the footwear 10 achieves the same effects as the first embodiment of the footwear 10. By tilting the portion corresponding to the lateral side of the heel 50 in footwear 10, such as business shoes, inward, the lateral side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or dirt, achieving a naturally stable standing posture. This allows the user to achieve a near-ideal walking posture, where the lateral side of the heel 50 touches the ground, then passes over the lateral side of the metatarsal bones 18, and finally kicks off the ground with the toes.

[0039] (Third embodiment) exist Figure 4A A third embodiment of footwear 10 is shown in FIG. Figure 2A The plan view of the left half foot 11 and the right half foot 12 shown also applies to Figure 4A 10. Figure 4A The illustrated footwear 10 is, for example, a pump. The two outer soles 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, or height direction, of the outer soles 14. The heel portions 25 are made, for example, of a synthetic resin core covered with rolled leather. The heel portions 25 are secured to the outer soles 14 using nails. Figure 4B yes Figure 4A Side view of the left half of the foot 11.

[0040] exist Figure 4A , the center line C2 of the heel portion 25 in the width direction is shown. The center line C2 intersects the center line C1 at an angle of 90 degrees. 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 of the heel portion 25. 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 arranged in the medial area D1 and extends in a straight line. The side surface 26 is inclined relative to the center line C2 in a manner that approaches the center line C2 as it moves away from the upper 13. The side surfaces 27 and 28 are arranged in the outer area D2. The upper 13, the lining 60 of the insole 15, and the heel portion 25 are arranged over the medial area D1 and the outer area D2.

[0041] Side 27 is connected to outsole 14. Side 27 is inclined relative to centerline C2 as it approaches centerline C2 as it moves away from upper 13. The angle of the acute angle formed between side 26 and centerline C2 is the same as the angle of the acute angle formed between side 27 and centerline C2. Side 27 extends in a straight line. Side 28 is connected to side 27 and bottom surface 28A. Figure 4A The front view of the heel portion 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 surface, i.e., the lower end surface, of the heel portion 25 having the above structure arranged in the outer region D2 is narrower than the area of ​​the portion arranged in the inner region D1. The side surface 26 is inclined relative to the center line C2. Figure 4A For the sake of convenience, the connection portion between the side surface 26 and the bottom surface 28A is shown as an edge shape, but the connection portion between the side surface 26 and the bottom surface 28A is actually chamfered into a curved shape or an arc shape.

[0042] When the left half foot 11 is mounted on the left foot F1 and the right half foot 12 is mounted on the right foot F2, and the lower end surfaces of the two heels 25 are in contact with the space E1, and the person stands, the center of gravity Q1 is located at a position corresponding to the outer area D2 of the heel 25. Moreover, the area of ​​the front end surface, that is, the lower end surface, of the heel 25 arranged in the outer area D2 is narrower than the area of ​​the part arranged in the inner area D1. Therefore, the left half foot 11 is located at Figure 4A The right half foot 12 is easily tilted in the direction of separation from the right half foot 12. Figure 4A The third embodiment of the shoe 10 achieves the same effects as the first embodiment of the shoe 10. By tilting the outer side of the heel 50 inward in the shoe 10, such as a pump, the outer side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or dirt, achieving a stable standing posture. This allows the user to walk in a manner similar to the ideal walking posture, where the outer side of the heel 50 touches the ground, then passes the outer side of the metatarsal bones 18, and finally kicks off the ground with the toes.

[0043] (Fourth embodiment) exist Figure 5FIG4 shows a fourth embodiment of the footwear 10. The fourth embodiment of the footwear 10 is an example in which the width of the heel portion 25 is narrower than that shown in FIG4 . The upper 13, the lining 60 of the insole 15, and the heel portion 25 are arranged over the medial area D1 and the lateral area D2. Furthermore, the boundary between the side surface 28 and the bottom surface 28A is located on the centerline C2. Therefore, the bottom surface 28A arranged in the medial area D1 contacts the location E1, while the portion of the heel portion 25 arranged in the lateral area D2 barely contacts the location E1.

[0044] Therefore, the area of ​​the heel portion 25 located in the lateral region D2 is smaller than the area of ​​the area located in the medial region D1. Consequently, the left foot half 11 is more likely to tilt toward the side 28 as it approaches the location E1. Furthermore, the right foot half 12 is more likely to tilt toward the side 28 as it approaches the location E1. As a result, the load borne by the heel portion 25 in the lateral region D2 exceeds the load borne by the heel in the medial region D1. The fourth embodiment of the footwear 10 achieves the same effects as the first embodiment of the footwear 10. By tilting the lateral side of the heel 50 inward in footwear 10, such as pumps, the outer side of the heel 50 sinks downward, similar to standing barefoot on sand, grass, or dirt. This creates a stable standing posture, and when walking, a similar ideal walking posture is achieved, where the outer side of the heel 50 touches the ground, then passes over the outer side of the metatarsal bones 18, and finally kicks off the ground with the toes.

[0045] (Fifth embodiment) Figure 6 This is a front view of a fifth embodiment of the footwear 10. The fifth embodiment of the footwear 10 shows an example in which the width of the heel portion 25 narrows as it approaches the bottom surface 26A. The upper 13, the lining 60 of the insole 15, and the heel portion 25 are arranged over the medial area D1 and the lateral area D2. The side surface 26 is arranged in the medial area D1, and the side surface 27 is arranged in the lateral area D2. The distance between the upper end of the side surface 26 and the centerline C2 is the same as the distance between the upper end of the side surface 27 and the centerline C2. Furthermore, the acute angle between the side surface 26 and the centerline C2 is smaller than the acute angle between the side surface 27 and the centerline C2. Furthermore, the bottom surface 26A of the heel portion 25 is connected to the side surfaces 26 and 27. The bottom surface 26A is flat, and the connection between the bottom surface 26A and the side surface 26 and the connection between the bottom surface 26A and the side surface 27 can be any of an angular shape, a curved shape, or an arc shape. The bottom surface 26A is arranged over the inner region D1 and the outer region D2.

[0046] The area of ​​the front end surface of the heel portion 25, i.e., the bottom surface 26A, that contacts the location E1 in the outer region D2 is larger than the area of ​​the location E1 in the inner region D1. As a result, the load borne by the heel portion 25 in the outer region D2 is greater than the load borne by the heel portion in the inner region D1. Therefore, in the fifth embodiment of the footwear 10, the load of the center of gravity Q1 is more easily borne in the outer region D2 of the heel portion 25, and the same effect as the first embodiment of the footwear 10 can be achieved. Figure 2A Similarly to the example described in [1], the calcaneus 20, where the body load is greatest, is located further outboard of the foot than the center line C1. Therefore, by aligning the heel portion 25 of the footwear 10 with the calcaneus 20 and offsetting it outboard, the heel portion 25 of the footwear 10 securely receives the load, reducing the burden on the ankle and knee, and thus stabilizing the posture. During walking, the footwear 10 can also approach an ideal gait, where the foot lands on the outside of the heel 50, then passes the outside of the metatarsal bones 18, and finally kicks off with the toes.

[0047] (Sixth embodiment) exist Figure 7 , a sixth embodiment of the footwear 10 is shown. The sixth embodiment of the footwear 10 is an example in which the width of the heel portion 25 becomes narrower as it approaches the bottom surface 26A. Figure 7 The width of the heel portion 25 is shown to be less than Figure 6 The width of the heel portion 25 is shown. The upper 13, the lining 60 of the insole 15 and the heel portion 25 are arranged over the medial area D1 and the lateral area D2. The angle on the acute angle side between the side 26 and the center line C2 is the same as the angle on the acute angle side 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 smaller 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, that is, the bottom surface 26A, which is grounded in the lateral area D2 and the location E1 is larger than the area of ​​the area of ​​the medial area D1 and the location E1. Therefore, in the sixth embodiment of the footwear 10, in the heel portion 25, it is easy to bear the load of the center of gravity Q1 in the lateral area D2, and the same effect as the first embodiment of the footwear 10 can be obtained. As in Figure 2A Similarly to the example described in [1], the calcaneus 20, where the body load is greatest, is located further outboard of the foot than the center line C1. Therefore, by aligning the heel portion 25 of the footwear 10 with the calcaneus 20 and offsetting it outboard, the heel portion 25 of the footwear 10 securely receives the load, reducing the burden on the ankle and knee, and thus stabilizing the posture. During walking, the footwear 10 can also approach an ideal gait, where the foot lands on the outside of the heel 50, then passes the outside of the metatarsal bones 18, and finally kicks off with the toes.

[0048] (Seventh embodiment) Figure 2AThe illustrated insole 15 may be used with all of the first embodiment of footwear 10, the second embodiment of footwear 10, the third embodiment of footwear 10, the fourth embodiment of footwear 10, the fifth embodiment of footwear 10, and the sixth embodiment of footwear 10. Figure 2B and Figure 9 Thus, the two insoles 15 include a liner 60, a raised portion 61 rising from the outer periphery of the liner 60, and a hole 40 penetrating the liner 60 in the thickness direction. The raised portion 61 is provided so as to curve from the outer periphery of the liner 60. Furthermore, the raised portion 61 is provided in a region extending from the approximate center to the rear end 63 in the front-to-back direction along the centerline C1. The liner 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, while the raised portion 61 contacts a portion of the side surface of the heel 50 of the left foot F1 and a portion of the side surface of the heel of the right foot F2.

[0049] When the insole 15 is viewed from above, the hole 40 is arranged between the approximate center and the rear end 63 of the insole 15 in the direction along the center line C1. When the insole 15 is viewed from above, the inner peripheral shape of the hole 40 is preferably the same as that of the insole 15 when viewed from above. Figure 9 The lower end 20A of the calcaneus 20 shown has the same shape. The center of gravity Q1 is located within the region where the hole 40 is provided. When the insole 15 is viewed from above, the center of gravity Q1 is approximately located at the center of the hole 40 along the centerline C1. Furthermore, when the insole 15 is viewed from above, the area of ​​the portion of the hole 40 located in the lateral region D2 exceeds the area of ​​the portion located in the medial region D1. When the insole 15 is viewed from above, the portion of the hole 40 located in the medial region D1 has, for example, a half-moon shape in plan view. When the insole 15 is viewed from above, the portion of the hole 40 located in the lateral region D2 has, for example, a trapezoidal shape in plan view. When the insole 15 is viewed from above, the rear end of the portion of the hole 40 located in the lateral region D2 is located between the rear end of the portion of the hole 40 located in the medial region D1 and the rear end 63 of the liner 60. Furthermore, when the insole 15 is viewed from above, the inner circumference of the hole 40 may also have a circular, elliptical, or other shape.

[0050] Furthermore, a portion of the hole 40 is provided in the rising portion 61. The inner peripheral surface of the hole 40 is gently curved and connected to the inner surface and the outer surface of the gasket 60. Figure 2BThus, when the left and right leg halves 11 and 12 are viewed in longitudinal section from the front, 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 so that the width of the hole 40 narrows as it approaches the bottom 64. In the longitudinal section of the left leg half 11 in the width direction, the acute angle 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 acute angle 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.

[0051] Furthermore, if Figure 2A and Figure 9 Thus, the surface of the insole 15 has a support portion 65 protruding in the thickness direction. When the insole 15 is viewed from above, the support portion 65 can have any shape, such as an oval or a circle. When the insole 15 is viewed from above, the support portion 65 can be arranged in the area where the metatarsal bones 18 are located, or it can be arranged across the area where both the metatarsal bones 18 and the tarsal bones 19 are located.

[0052] Furthermore, when the left foot half 11 is attached to the left foot F1 and the right foot half 12 is attached to the right foot F2, and a person stands in a location E1, portions of the lower surface of the heel 50 of the left foot F1 and the lower surface of the heel 50 of the right foot F2 respectively sink into the hole 40 of the insole 15. Consequently, the 28 bones of each foot are in their normal positions in the left foot F1 and the right foot F2. Consequently, the load borne by the outsole 14 from the heel in the lateral region D2 exceeds the load borne by the heel 50 in the medial region D1. This further enhances the effects described in the first embodiment of the footwear 10.

[0053] If the insole 15 is provided with the hole 40, the bones of the left foot F1 and the right foot F2 are lifted, creating a gap between the lower surface of the left foot F1 and the lower surface of the right foot F2 and the insole 15. Furthermore, the support portion 65 supports the lower surface of the left foot F1 and the lower surface of the right foot F2. This makes it easier for the left foot F1 and the right foot F2 to form an arch shape in the width direction. This makes it easier to absorb impact from the ground, reducing the burden on the knees, ankles, and waist of the left foot F1 and the right foot F2. Furthermore, the support portion 65 is located in the gap between the lower surface of the left foot F1 and the lower surface of the 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 the lower surface of the right foot F2 respectively sunken into the hole 40 of the insole 15, achieving an effective effect.

[0054] Furthermore, the inner circumferential surface of the hole 40 is inclined relative to the upper surface of the sole 64. In the width direction of the left foot half 11, the acute 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 sole 64 is smaller than the acute 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 sole 64. Both angles θ1 and θ2 are less than 90 degrees. Therefore, the lower surface of the heel 50 can easily and smoothly sink along the inner circumferential surface of the hole 40, and the portion of the lower surface of the heel 50 near the little toe of the inner circumferential surface of the hole 40 is supported, thereby positioning the heel 50 relative to the insole 15 in the width direction.

[0055] Therefore, the lower end 20A of the calcaneus 20 can be kept directly above the hole 40, and the load borne by the heel portion 21 from the heel 50 at the position corresponding to the lateral area D2 can exceed the load borne by the heel portion 21 from the heel 50 at the position corresponding to the medial area D1, thereby further improving the effect of the first embodiment.

[0056] (Eighth embodiment) Figure 8 The illustrated insole 15 can be used in all of the first, second, third, fourth, fifth, and sixth embodiments of the footwear 10. A cutout 41 is provided in the liner 60 of each of the two insoles 15. The shape of the cutout 41 is arbitrary. Furthermore, the center of gravity Q1 is located within the region where the cutout 41 is provided. Within the cutout 41, the area of ​​the outer region D2 exceeds the area of ​​the inner region D1.

[0057] Furthermore, when the left foot half 11 is attached to the left foot F1 and the right foot half 12 is attached to the right foot F2, and a person stands in a location E1, a portion of the surface of the heel 50 of the left foot F1 and the heel of the right foot F2 respectively sink into the cutout 41 of the insole 15. Consequently, the load received by the outsole 14 from the heel in the lateral region D2 exceeds the load received from the heel in the medial region D1. This further enhances the effects described in the first embodiment of the footwear 10.

[0058] also, Figure 2A and Figure 8The illustrated insole 15 can be installed in a footwear compartment having an outsole that does not include chamfered side 31, inclined side 27, side 28, side 32, or the like. In this case, when the left foot half is attached to the left foot and the right foot half is attached to the right foot, and a person stands in a space, portions of the surface of the left and right heels respectively sink into the hole 40 or cutout 41 of the insole 15. Consequently, the load borne by the heel in the lateral region D2 of the outsole exceeds the load borne by the heel in the medial region D1. Consequently, the same effects as described in the first embodiment of the footwear can be achieved.

[0059] (Ninth embodiment) Figure 10 and Figure 11 Neither the left foot half 11 nor the right foot half 12 shown in the figure includes the insole 15. The bottom portion 64 provided on each of the left foot half 11 and the right foot half 12 has a recess 66. When viewing the bottom portion 64 from directly above, the recess 66 is located between the approximate center and the rear end 67 of the bottom portion 64 along the centerline C1. The top surface of the bottom portion 64 faces the foot-receiving space 16, and the recess 66 is provided on the top surface of the bottom portion 64. The recess 66 is formed by recessing a portion of the top surface of the bottom portion 64 in the thickness direction of the bottom portion 64.

[0060] When the bottom 64 is viewed from above, the recess 66 is arranged between the approximate center of the bottom 64 and the rear end 67 in the direction along the center line C1. When the bottom 64 is viewed from above, the shape of the recess 66 is preferably the same as that of the bottom 64 when viewed from above. Figure 9 The lower end 20A of the calcaneus 20 shown has the same shape. The center of gravity Q1 is located within the region where the recess 66 is provided. When viewing the base 64 from above, the center of gravity Q1 is approximately located at the center of the recess 66 along the centerline C1. Furthermore, when viewing the base 64 from above, the area of ​​the portion of the recess 66 located in the lateral region D2 exceeds the area of ​​the portion located in the medial region D1. When viewing the base 64 from above, the portion of the recess 66 located in the medial region D1 has, for example, a half-moon shape in plan view. When viewing the base 64 from above, the portion of the recess 66 located in the lateral region D2 has, for example, a trapezoidal shape in plan view. When viewing the base 64 from above, the rear end of the portion of the recess 66 located in the lateral region D2 is located between the rear end of the portion of the recess 66 located in the medial region D1 and the rear end 67 of the base 64 from above. Furthermore, when viewing the base 64 from above, the shape of the recess 66 may be circular, elliptical, or other shapes.

[0061] Furthermore, when the left half foot 11 is mounted on the left foot F1 and the right half foot 12 is mounted on the right foot F2, and a person stands at a location 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 respectively sink into the recess 66 of the bottom 64. Therefore, for each of the left foot F1 and the right foot F2, the 28 bones of a single foot are in a normal position. Therefore, the load received by the outsole 14 from the heel in the lateral area D2 exceeds the load received from the heel in the medial area D1. Therefore, the same effect as that described in the first embodiment of the footwear 10 can be obtained. In addition, in Figure 10 and Figure 11 , bottom 64 may be used in all of the first embodiment of footwear 10 , the second embodiment of footwear 10 , the third embodiment of footwear 10 , the fourth embodiment of footwear 10 , the fifth embodiment of footwear 10 , the sixth embodiment of footwear 10 , the seventh embodiment of footwear 10 , and the eighth embodiment of footwear 10 .

[0062] Furthermore, when each of the left foot half 11 and the right foot half 12 includes both the insole 15 having the hole 40 and the bottom 64 having the recess 66, when the insole 15 is viewed from above, the area where the hole 40 is located at least partially overlaps with the area where the recess 66 is located. Furthermore, when each of the left foot half 11 and the right foot half 12 includes both the insole 15 having the cutout 41 at least partially overlaps with the area where the recess 66 is located at least partially overlaps with the area where the cutout 41 is located at least partially overlaps with the area where the recess 66 is located at least partially overlaps with the area where the recess 66 is located at least partially overlaps with the area where the recess 66 is located at least partially overlaps with the area where the recess 66 is located at least partially overlaps with the area where the recess 41 ...66 is located at least partially overlaps.

[0063] (Supplementary explanation) When a person stands barefoot on sand, grass, or soft soil, Figure 2A 、 Figure 8 As described in the example, the calcaneus 20 is positioned further outboard from the centerline C1, resulting in a state where the heel (outer side) of the foot sinks into the ground, achieving a natural and correct standing posture, a stable standing posture, and a stable walking posture. Even when wearing footwear, this natural state is achieved through the insole, sole, and heel portion of the footwear. This allows for a stable standing posture, and when walking, a similar ideal walking posture is achieved, with the foot landing on the outer side of the heel, then passing the outer sides of the metatarsal bones, and finally kicking off with the toes. This effect can be achieved with all of the insoles, footwear with outsoles, and footwear with outsoles disclosed herein.

[0064] An example of the technical meaning of the matters described in this embodiment is as follows. The upper 13 is an example of a main body. The outsole 14, the heel portion 21, and the shoe heel portion 25 are examples of a ground contact portion. The footwear 10 is an example of a footwear. The center line C1 is an example of a center line. The medial area D1 is an example of a medial area. The lateral area D2 is an example of a lateral area. The angle θ1 is an example of a first angle, and the angle θ2 is an example of a second angle. The bottom 64 is an example of a bottom. The recess 66 is an example of a recess. The chamfer provided on the side 31, the inclined surface constituting the side 32, the side 27, and the side 28 are examples of a setting mechanism. The side 27, the side 28, the side 30, the side 31, and the side 32 are examples of side surfaces. The foot-receiving space 16 is an example of a foot-receiving space.

[0065] Insole 15 is an example of an insole. Pad 60 is an example of a pad. Hole 40 and cutout 41 are each an example of an auxiliary mechanism. Alternatively, a structure can be employed in which a recess or depression is provided in place of the hole or cutout of the insole, thereby thinning the thickness of some portions of the insole. Furthermore, in the various figures, some components, such as the heel, shoe heel, and outsole, are shown as having corners. However, this is merely a representation of the drawings; in reality, these portions are smoothly chamfered or have a smoothly curved shape.

[0066] [Industrial Applicability] The present disclosure can be used as an insole and footwear provided in footwear worn on a person's foot.

[0067] Explanation of Figure Numbers 10: Footwear 13: Upper 14: Outsole 15: Insoles 16: Foot storage space 21: Heel 25: Heel 27, 28, 30, 31, 32: Side 40: Hole 41: Incision 60: Padding 64: bottom 66: Concave C1: Centerline D1: medial area D2: Outer area θ1, θ2: angles

Claims

1. A shoe insole having a liner placed in a foot-receiving space of footwear, the shoe insole being characterized by: The pad is divided into an inner region and an outer region arranged across a center line in a width direction of the pad in a plan view. When the liner is viewed from above, the medial area is the area where the big toe of the foot is located. When the pad is viewed from above, the outer area is the area where the little toe of the foot is located. The liner has an auxiliary mechanism including a hole penetrating the liner in a thickness direction, and causing a load on the ground contact portion of the footwear from the heel at a position corresponding to the lateral region to be greater than a load on the ground contact portion from the heel at a position corresponding to the medial region. The hole is arranged so that, when the pad is viewed from above, it has a position corresponding to the center of gravity of the sole of the foot within the area to be installed, and the lower end of the heel bone of the foot is located directly above the hole. The inner peripheral shape is a shape obtained by planarly viewing the lower end of the calcaneus bone of the foot.

2. The insole according to claim 1, characterized in that The inner peripheral shape is provided over the inner region and the outer region, the area of ​​the outer region exceeds the area of ​​the inner region, and the planar shape of the portion of the portion provided in the inner region is a half-moon shape. The planar shape of the portion arranged in the outer area is a trapezoidal shape, The rear end of the portion arranged in the outer region is located between the rear end of the portion of the hole arranged in the inner region and the rear end of the pad, thereby The shape is formed when the lower end of the heel bone of the foot is viewed from above.

3. The insole according to claim 1, characterized in that The auxiliary mechanism is constituted by a recessed portion that is replaced with the hole and is recessed in the thickness direction of the gasket.

4. A pair of shoes comprising: a main body for inserting a foot; and a grounding portion fixed to the main body and grounded, wherein: The main body has: a foot receiving space for inserting the foot; and The insole according to claim 1, arranged in the foot receiving space, The main body is divided into a main body inner region and a main body outer region which are arranged across a center line in a width direction of the main body when the main body is viewed from above. When the main body is viewed from above, the inner area of ​​the main body is the area where the big toe of the foot is located, and the outer area of ​​the main body is the area where the little toe of the foot is located. The grounding portion is arranged over the inner area and the outer area of ​​the main body when the main body is viewed from above. and having a setting mechanism for causing the load borne by the ground contact portion from the heel of the foot at a position corresponding to the lateral region to exceed the load borne by the ground contact portion from the heel of the foot at a position corresponding to the medial region, The setting mechanism is constructed such that, when viewed from the front as seen from the heel side of the foot, the thickness of the portion corresponding to the inner area of ​​the main body is approximately constant, and the thickness of the portion corresponding to the outer area of ​​the main body is smaller than the thickness of the portion corresponding to the inner area of ​​the main body.

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

6. The footwear according to claim 4, characterized in that The auxiliary mechanism is constituted by a recessed portion that is replaced with the hole and is recessed in the thickness direction of the gasket.

7. A pair of shoes comprising: a main body for inserting a foot; and a grounding portion fixed to the main body and grounded, wherein: The main body is divided into an inner area and an outer area arranged across a center line in a width direction of the main body when the main body is viewed from above. When the main body is viewed from above, the inner area is the area where the big toe of the foot is located. The outer area is the area where the little toe of the foot is located, The grounding portion is arranged over the inner region and the outer region in a plan view of the main body. The main body has a foot receiving space for inserting a foot, and is provided with a bottom portion fixed to the grounding portion and forming the foot receiving space. The sole has an auxiliary mechanism at a portion facing the foot receiving space and on which the heel of the foot is placed, the auxiliary mechanism including a recessed portion and configured to cause the load borne by the heel of the foot to the ground contact portion of the shoe at a position corresponding to the lateral region to exceed the load borne by the heel of the foot to the ground contact portion at a position corresponding to the medial region. The recess is arranged so that, when the main body is viewed from above, it has a position corresponding to the center of gravity of the sole of the foot within the area to be provided, and the lower end of the calcaneus of the foot is located directly above the recess. The inner peripheral shape is a shape obtained by planarly viewing the lower end of the calcaneus bone of the foot.

8. The footwear according to claim 7, characterized in that The inner peripheral shape is provided over the inner region and the outer region, the area of ​​the outer region exceeds the area of ​​the inner region, and the planar shape of the portion of the portion provided in the inner region is a half-moon shape. The planar shape of the portion arranged in the outer area is a trapezoidal shape, The rear end of the portion arranged in the outer region is located between the rear end of the portion of the recessed portion arranged in the inner region and the rear end of the bottom portion, thereby The shape is formed when the lower end of the heel bone of the foot is viewed from above.

9. The footwear according to claim 7, characterized in that A setting mechanism is provided for causing the load received by the heel of the foot at the position corresponding to the lateral region of the ground contact portion to exceed the load received by the heel of the foot at the position corresponding to the medial region of the ground contact portion. The setting mechanism is constructed such that, when viewed from the front as seen from the heel side of the foot, the thickness of the portion corresponding to the inner area of ​​the main body is approximately constant, and the thickness of the portion corresponding to the outer area of ​​the main body is smaller than the thickness of the portion corresponding to the inner area of ​​the main body.

10. Footwear according to claim 9, characterized in that The setting mechanism has a portion corresponding to the outer region of the main body that increases in thickness as it approaches the inner region of the main body when viewed from the front as viewed from the heel side of the foot.

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