footwear

Abstract

To provide footwear having excellent propulsion on sandy ground. [Solution] The fishing shoes, which are footwear according to the present invention, have a sole 4. The sole 4 has a base 20 and a plurality of ridges 22 aligned along the front-to-rear direction. Each ridge 22 rises from the base 20. The ridges 22 extend from the inside surface of the sole, passing through the bottom surface and reaching the outside surface. The ridges 22 have a tread surface 26, a toe-side wall surface 28 extending from the tread surface 26 toward the base 20, and a heel-side wall surface 30 extending from the tread surface 26 toward the base 20. The angle θt formed by the toe-side wall surface 28 and the tread surface 26 is greater than the angle θh formed by the heel-side wall surface 30 and the tread surface 26.

Description

[Technical Field]

[0001] The present specification discloses footwear. In particular, the present specification discloses footwear having a sole with a plurality of ridges. [Background technology]

[0002] A shoe has a sole. A typical sole includes a plurality of protrusions. These protrusions prevent the shoe from slipping on the ground. A shoe with protrusions in the shape of a ridge is disclosed in Japanese Patent Publication No. 58-501412. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 58-501412 Summary of the Invention [Problem to be solved by the invention]

[0004] Anglers who fish in the surf walk on sand, and they want footwear that provides sufficient propulsion in the sand.

[0005] The applicant's intention is to provide footwear that provides excellent propulsion on sandy ground. [Means for solving the problem]

[0006] The footwear disclosed in this specification has a sole including a bottom surface, an inside surface rising from the bottom surface, and an outside surface rising from the bottom surface. The sole has a base and a plurality of ridges aligned along the front-to-rear direction. Each ridge extends from the inside surface through the bottom surface to the outside surface. (1) Tread, (2) a toe side wall extending from the tread toward the base; and (3) The heel side wall extending from this tread surface toward the base. The angle θt formed by the toe side wall surface and the tread surface is larger than the angle θh formed by the heel side wall surface and the tread surface. [Effects of the Invention]

[0007] This footwear provides excellent propulsion on sandy ground. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view showing fishing shoes as footwear according to one embodiment. [Figure 2] FIG. 2 is a bottom view of the fishing shoe of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 5 is an enlarged bottom view of a portion of the fishing shoe of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, preferred embodiments will be described in detail with reference to the drawings as appropriate.

[0010] Figures 1-3 show fishing shoes 2 (footwear). In Figures 1 and 2, the left-right direction is the front-to-back direction of the fishing shoes 2. In Figure 3, the left side is the inside of the fishing shoes 2, and the right side is the outside of the fishing shoes 2. The fishing shoes 2 are for the right foot. The fishing shoes for the left foot have a shape that is mirror-symmetrical to the shape of the fishing shoes 2 for the right foot. The fishing shoes 2 have a sole 4, an insole 6, and an upper 8.

[0011] As shown in FIG. 1, the sole 4 has a toe 10 and a heel 12. As shown in FIG. 3, the sole 4 further has a bottom surface 14, an inside surface 16, and an outside surface 18. The inside surface 16 is integral with the bottom surface 14. The inside surface 16 stands up from the bottom surface 14 at the inside end of the bottom surface 14. The outside surface 18 is integral with the bottom surface 14. The outside surface 18 stands up from the bottom surface 14 at the outside end of the bottom surface 14. Typical materials for the sole 4 include synthetic resin compositions and cross-linked rubber compositions.

[0012] FIG. 4 shows an enlarged view of the sole 4. The sole 4 has a base 20 and a plurality of ridges 22. As is clear from also referring to FIG. 2, the ridges 22 are aligned along the front-to-back direction (Y direction). Each ridge 22 stands upright from the base 20. The ridges 22 are integral with the base 20. As shown in FIG. 3, the ridges 22 extend from the inside surface 16, through the bottom surface 14, to the outside surface 18. Grooves 24 exist between each ridge 22 and its adjacent ridge 22. In the sole 4, the plurality of grooves 24 are aligned along the front-to-back direction (Y direction).

[0013] As shown in Figure 4, the ridge 22 has a tread surface 26, a toe-side wall surface 28, and a heel-side wall surface 30. The toe-side wall surface 28 is located on the toe side of the tread surface 26. The toe-side wall surface 28 extends from the tread surface 26 toward the base 20. The heel-side wall surface 30 is located on the heel side of the tread surface 26. The heel-side wall surface 30 extends from the tread surface 26 toward the base 20.

[0014] FIG. 5 shows the ridge 22. The ridge 22 has a center curve 32, an inside curve 34, an outside curve 36, an inside raised portion 38, and an outside raised portion 40. The center curve 32 is located near the center of the ridge 22 in the X direction. The center curve 32 has a shape that convex toward the heel 12 (see FIG. 1). The inside curve 34 is located more inward than the center curve 32. The inside curve 34 is continuous with the center curve 32 and is tangent to the center curve 32. The inside curve 34 has a shape that convex toward the toe 10 (see FIG. 1). The outside curve 36 is located more outward than the center curve 32. The outside curve 36 is continuous with the center curve 32 and is tangent to the center curve 32. The outside curve 36 has a shape that convex toward the toe 10. The inside raised portion 38 is continuous with the inside curve 34. As is clear from reference to Figure 3 as well, the inside upright portion 38 extends upward from the inside curve 34. The outside upright portion 40 is continuous with the outside curve 36. As is clear from reference to Figure 3 as well, the outside upright portion 40 extends upward from the outside curve 36.

[0015] When an angler wearing these fishing shoes 2 walks on sand, the ridge 22 penetrates the sand. When the angler kicks the sand, the heel side wall 30 mainly pushes against the sand. The reaction force from the sand provides the angler with propulsion.

[0016] As mentioned above, the ridges 22 extend from the inside surface 16 through the bottom surface 14 to the outside surface 18. Therefore, the grooves 24 penetrate from the inside surface 16 to the bottom surface 14. Sand is easily discharged from these grooves 24. Sand does not easily get stuck in these grooves 24. These fishing shoes 2 maintain excellent propulsion.

[0017] When an angler attempts to move sideways, a force is exerted mainly on the area near the ball of the foot. The direction of this force is indicated by arrow A1 in FIG. 5. This arrow A1 is approximately perpendicular to the inside curve 34 at the starting point of this arrow A1. This ridge 22 prevents the angler from slipping when he or she starts to move sideways.

[0018] When an angler tries to stop moving laterally, a force is applied mainly to the vicinity of the ball of the foot. The direction of this force is indicated by arrow A2 in FIG. 5. This arrow A2 is roughly perpendicular to the outside curve 36 at the starting point of this arrow A2. This ridge 22 prevents the angler from slipping when stopping his or her lateral movement.

[0019] In FIG. 4, the arrow Wg indicates the width of the tread surface 26. The width Wg is measured along the front-to-rear direction (Y direction). The width Wg is preferably 3.0 mm or more and 7.0 mm or less. A ridge 22 with a width Wg of 3.0 mm or more has high rigidity. This ridge 22 is less likely to buckle. From this perspective, the width Wg is more preferably 4.0 mm or more, and particularly preferably 4.5 mm or more. A ridge 22 with a width Wg of 7.0 mm or less is likely to dig into sand. From this perspective, the width Wg is more preferably 6.0 mm or less, and particularly preferably 5.5 mm or less.

[0020] In Figure 4, arrows Pr indicate the pitch of the ridges 22. From the viewpoint of achieving both the rigidity of the ridges 22 and the ability to discharge sand from the grooves 24, the pitch Pr is preferably 6.0 mm or more and 20.0 mm or less. The pitch Pr is more preferably 8.0 mm or more, and particularly preferably 9.0 mm or more. The pitch Pr is more preferably 18.0 mm or less, and particularly preferably 16.0 mm or less.

[0021] In Figure 4, the arrow θt indicates the angle between the toe side wall surface 28 and the tread surface 26. From the viewpoint that the ridges 22 can have sufficient rigidity even when the width Wg is small, the angle θt is preferably 100° or more, more preferably 110° or more, and particularly preferably 115° or more. From the viewpoint of the ease with which the ridges 22 penetrate into sand, the angle θt is preferably 150° or less, more preferably 140° or less, and particularly preferably 135° or less.

[0022] In Figure 4, arrow θh indicates the angle between heel side wall surface 30 and tread surface 26. From the viewpoint of sand discharge from groove 24, angle θh is preferably 70° or more, more preferably 80° or more, and particularly preferably 85° or more. From the viewpoint of obtaining sufficient propulsion force from sand, angle θt is preferably 110° or less, more preferably 100° or less, and particularly preferably 95° or less.

[0023] The angle θt is greater than the angle θh. From the viewpoint of propulsion force and sand dischargeability, the difference (θt - θh) between the angles θt and θh is preferably 10° or greater and 40° or less. The difference (θt - θh) is more preferably 15° or greater, and particularly preferably 20° or greater. The difference (θt - θh) is more preferably 35° or less, and particularly preferably 30° or less.

[0024] In FIG. 4, arrow Hr indicates the height of ridge 22 from base 20. Height Hr is preferably 3.0 mm or more and 7.0 mm or less. Ridges 22 with a height Hr of 3.0 mm or more contribute to a large propulsive force. From this viewpoint, height Hr is more preferably 4.0 mm or more, and particularly preferably 4.5 mm or more. Ridges 22 with a height Hr of 7.0 mm or less are less likely to buckle. From this viewpoint, height Hr is more preferably 6.0 mm or less, and particularly preferably 5.5 mm or less.

[0025] 4, the arrow Tb indicates the thickness of the base 20. From the viewpoint of durability of the sole 4, the thickness Tb is preferably 1.0 mm or more, and particularly preferably 1.5 mm or more. From the viewpoint of light weight of the fishing shoes 2, the thickness Tb is preferably 5.0 mm or less, and particularly preferably 4.0 mm or less.

[0026] 3, the insole 6 is positioned on the sole 4. In this embodiment, the insole 6 is a polymer foam. A typical base polymer for this foam is ethylene-vinyl acetate copolymer (EVA).

[0027] As shown in FIG. 3, the upper 8 is generally located on the bottom surface 14 of the sole 4. The vicinity of the lower end of the upper 8 is joined to the sole 4. The upper 8 has a sock 42 and a reinforcing layer 44. The reinforcing layer 44 is joined to the sock 42. As is clear from FIG. 1, the reinforcing layer 44 covers a portion of the sock 42. In this embodiment, the material of the sock 42 is a polymer foam. A typical base polymer for this foam is chloroprene rubber. In this embodiment, the material of the reinforcing layer 44 is cross-linked rubber.

[0028] [Disclosure items] Each of the following sections discloses a preferred embodiment.

[0029] [Item 1] The sole includes a bottom surface, an inside surface rising from the bottom surface, and an outside surface rising from the bottom surface, The sole has a base and a plurality of ridges aligned along the front-to-rear direction, Each ridge extends from the inside surface through the bottom surface to the outside surface, The above mentioned mountain is (1) Tread, (2) a toe side wall extending from the tread surface toward the base; and (3) a heel side wall extending from the tread surface toward the base; It has Footwear, wherein an angle θt formed between the toe side wall surface and the tread surface is greater than an angle θh formed between the heel side wall surface and the tread surface.

[0030] [Item 2] The above mentioned mountain is (a) A center curve having a convex shape toward the heel; (b) an inside curve located inside the center curve and having a convex shape toward the toe; and (c) An outside curve located outside the center curve and having a convex shape toward the toe, Footwear according to item 1, having

[0031] [Item 3] Footwear according to item 1 or 2, wherein the difference (θt-θh) between the angle θt and the angle θh is 10° or greater and 40° or less.

[0032] [Item 4] 4. Footwear according to any one of items 1 to 3, wherein the height Hr of the ridge from the base is 3.0 mm or more and 7.0 mm or less.

[0033] [Item 5] 5. Footwear according to any one of items 1 to 4, wherein the width Wg of the tread in the front-to-back direction is 3.0 mm or more and 7.0 mm or less.

[0034] [Item 6] 6. Footwear according to any one of items 1 to 5, wherein the pitch Pr of the ridges is 6.0 mm or more and 20.0 mm or less. [Industrial Applicability]

[0035] The footwear according to the present invention includes not only shoes but also boots, tabi socks, sandals, waders, etc. [Explanation of symbols]

[0036] 2. Fishing shoes 4. Sole 6. Insoles 8. Upper 10 Tou 12. Heel 14 Bottom surface 16...Inside surface 18. Outside surface 20...Base 22...sujiyama 24...Groove 26...tread 28 Toe side wall 30 Heel side wall 32 Center curve 34 Inside Curve 36. Outside curve 38 Inside standing part 40... Outside standing part 42···Sock 44 Reinforcement layer

Claims

1. The sole includes a bottom surface, an inside surface rising from the bottom surface, and an outside surface rising from the bottom surface, The sole has a base and a plurality of ridges aligned along the front-to-rear direction, Each ridge extends from the inside surface through the bottom surface to the outside surface, The above mentioned mountain is (1) Tread surface, (2) a toe side wall extending from the tread surface toward the base; and (3) a heel side wall extending from the tread surface toward the base; It has Footwear, wherein an angle θt formed between the toe side wall surface and the tread surface is greater than an angle θh formed between the heel side wall surface and the tread surface.

2. The above mentioned mountain is (a) a center curve having a convex shape toward the heel; (b) an inside curve located inside the center curve and having a convex shape toward the toe; and (c) an outside curve located outside the center curve and having a convex shape toward the toe; Footwear according to claim 1, comprising:

3. 3. The footwear according to claim 1, wherein the difference (θt-θh) between the angle θt and the angle θh is equal to or greater than 10° and equal to or less than 40°.

4. 3. The footwear according to claim 1, wherein the height Hr of the ridge from the base is equal to or greater than 3.0 mm and equal to or less than 7.0 mm.

5. 3. The footwear according to claim 1, wherein the width Wg of the tread surface in the front-to-rear direction is 3.0 mm or more and 7.0 mm or less.

6. 3. The footwear according to claim 1, wherein the pitch Pr of the ridges is equal to or greater than 6.0 mm and equal to or less than 20.0 mm.

Images