Foot support for rubber boots

Abstract

The objective is to provide a foot support device for rubber boots that can fix the foot inside the boot while supporting the bones from the metatarsal bones through the cuneiform bones to the navicular bone, and also allows for effective movement of the toes inside the boot. [Solution] A foot fixation device 1 for boots to fix the foot H inside the boot N, comprising a main body 10 having a structure capable of supporting the metatarsal bones K1, cuneiform bones K2 and navicular bone K3 when worn, and a fixing part 15 at a predetermined position on the outer surface of the main body 10 that engages with a fixing part installed inside the boot N, thereby enabling the main body 10 to be detachably attached to the boot N.

Description

Technical Field

[0001] The present invention relates to a foot fixing device for boots that can fix the foot in the boots while supporting from the midfoot bone over the cuneiform bone to the navicular bone.

Background Art

[0002] Conventionally, when working in places where there is a possibility of seawater or water splashing, such as in fishing, agriculture, gardening, etc., it has been common to use boots as footwear. As an example showing such conventional boots, there is, for example, Patent Document 1 below.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The prior art shown in Patent Document 1 above is a device related to boots, and has the merit of obtaining high visibility with a simple structure. However, in such conventional boots, since the wearer's foot is not fixed in the boots, the alignment (arrangement) of the foot bones is likely to be disrupted, and there is a problem that the whole body is likely to be loaded. Such a problem was particularly prominent for those who work wearing boots in unstable places such as on a ship. Also, in conventional boots, since the wearer's foot is not fixed in the boots, the foot floats in the boots, making it easy to rub the heel. Even if there is no damage other than the heel, the heel wears down and the new boots have to be replaced.

[0005] Therefore, the present invention aims to solve the problems of the above-mentioned prior art and provide a foot fixation device for boots that can fix the foot inside the boot while supporting the bones from the metatarsal bones through the cuneiform bones to the navicular bone, and also allows the toes to move effectively inside the boot. [Means for solving the problem]

[0006] To achieve the above objectives, the foot fixation device for boots of the present invention is a foot fixation device for boots that secures the foot inside the boot, and is characterized by comprising a main body having a structure capable of supporting the metatarsal bones, cuneiform bones, and navicular bone when worn, and a fixing part at a predetermined position on the outer surface of the main body that engages with a fixing part installed inside the boot, thereby enabling the main body to be detachably attached to the boot. Furthermore, in addition to the first feature described above, the foot fixation device for boots of the present invention has a second feature: the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones through the heel to the Achilles tendon; it includes an instep band provided at one end that covers the instep when worn and is detachably engaged with the other end of the main body; and an ankle band provided at one end of the main body that covers the Achilles tendon and covers the ankle when worn and is detachably engaged with the other end of the main body; it also has an opening at a position that covers the heel and a fixing part on the bottom surface. Furthermore, in addition to the second feature described above, the foot fastening device for boots of the present invention has a third feature: the instep band is composed of a front instep band provided at one end of the main body, which covers the toe side of the instep when worn and is detachably engaged with the other end of the main body; and a rear instep band provided at one end of the main body on the heel side of the front instep band, which covers the heel side of the instep when worn and is detachably engaged with the other end of the main body. Furthermore, in addition to the first feature described above, the foot fixation device for boots of the present invention has a fourth feature: the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones to the navicular bone beyond the cuneiform bones; it includes a front instep band provided at one end that covers the toe side of the instep when worn and is detachably engaged with the other end of the main body; and a rear instep band provided at one end of the main body on the heel side of the front instep band that covers the heel side of the instep when worn and is detachably engaged with the other end of the main body; and it also includes a fixing part on the bottom surface. Furthermore, in addition to the third or fourth feature described above, the foot fixation device for boots of the present invention has a fifth feature in which the front instep band and the rear instep band extend in directions that intersect each other. Furthermore, in addition to the first feature described above, the foot fixation device for boots of the present invention has a sixth feature: the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones to the calf beyond the heel, and comprises an inner covering portion that covers the inside of the foot and an outer covering portion that covers the outside of the foot, and each of the outer surfaces of the inner covering portion and the outer covering portion is provided with a plurality of fixing string insertion points for inserting fixing strings that can be used to tighten and secure the inner covering portion and the outer covering portion together when worn, and the fixing strings are alternately inserted into the fixing string insertion points provided on the inner covering portion and the fixing string insertion points provided on the outer covering portion on the front side of the foot, and an opening is provided at a position that covers the heel, and fixing parts are provided on the bottom surface and the back surface. Furthermore, in addition to the sixth feature described above, the foot fastening device for boots of the present invention has a seventh feature: the fastening lace insertion portion is equipped with a hook-and-loop fastener, and the fastening lace insertion portion is detachably attached to the outer circumferential surfaces of the inner covering portion and the outer covering portion via the hook-and-loop fastener. Furthermore, in addition to the first feature described above, the foot fixing device for boots of the present invention has an eighth feature, in which the main body is formed of an expandable resin bag, and the bag has an intake / exhaust port at a predetermined location that allows gas to be introduced and released, and that can expand from the bag and be inserted into a through hole provided in the upper part of the toe side of the boot, and the side of the bag having the intake / exhaust port has a fixing part. Furthermore, in addition to the first feature described above, the foot fixation device for boots of the present invention has a ninth feature, in which the main body is a sock made of an elastic fabric, the sock has a low-stretch portion that is less elastic than other parts in the area covering the metatarsal bones, cuneiform bones and navicular bones, the sock has an insole holding portion that holds an insole that can be freely inserted and removed in an area corresponding to the length from the metatarsal bones to the navicular bone beyond the cuneiform bones, and the bottom surface of the insole holding portion has a fixing portion. [Effects of the Invention]

[0007] The foot fixation device for boots described in claim 1 allows the foot to be fixed inside the boot while supporting the bones from the metatarsal bones through the cuneiform bones to the navicular bone. This improves the fit between the foot and the boot and effectively prevents the alignment of the foot bones from becoming distorted. As a result, the body can be stabilized and the load on the entire body can be effectively suppressed. Furthermore, by providing support from the metatarsal bones through the cuneiform bones to the navicular bone, it becomes possible to maintain balance and keep the body functioning properly even when standing and working while wearing boots. Furthermore, it prevents the feet from floating inside the boots, effectively preventing the heels from rubbing and increasing the durability of the boots. In addition, it makes it possible to run while wearing the boots.

[0008] Furthermore, according to the foot fixation device for boots described in claim 2, in addition to the effects and benefits of the configuration described in claim 1, the instep band and the ankle band provide even more secure support to the metatarsal bones, cuneiform bones, and navicular bones, as well as secure support to the ankle. Furthermore, by forming the main body with a length that can cover from the metatarsal bones, past the heel, to the Achilles tendon, it becomes possible to effectively move the toes inside the boot, allowing for better grip even on unstable surfaces, and providing a secure hold without causing excessive stress to the foot. This makes it a suitable foot support for boots. Furthermore, by providing an opening in the heel area, it becomes possible to insert an insole between the sole of the foot and the foot support. This allows, for example, the use of currently used insoles inside boots, more effectively preventing misalignment of the foot bones and resulting in a foot support for boots that provides greater body stability. Additionally, by effectively creating arch support through the insole, body balance can be further stabilized, reducing foot fatigue and enabling the maintenance of good posture. Furthermore, by providing a fixing part on the bottom, the main body can be easily attached to and detached from the boots, making it a highly convenient foot fixing device for boots. In addition, because the main body is made of a cushioning fabric, it can support the wearer's foot while applying appropriate pressure to various points according to the shape of the foot, providing even firmer support and resulting in a foot support device for boots that offers a superior fit.

[0009] Furthermore, according to the foot fixation device for boots described in claim 3, in addition to the effects and benefits of the configuration described in claim 2, the instep band is provided with an instep front band and an instep rear band, which allows for even more precise support of the metatarsal bones, cuneiform bones, and navicular bones.

[0010] Furthermore, according to the foot fixation device for boots described in claim 4, in addition to the effects and benefits of the configuration described in claim 1, the instep front band and instep rear band provide even more secure support to the metatarsal bones, cuneiform bones, and navicular bones. Furthermore, by forming the main body with a length that can cover from the metatarsal bones, beyond the cuneiform bones, to the navicular bone, it becomes possible to effectively move the toes inside the boot, allowing for better grip even on unstable surfaces, and providing a secure hold without causing excessive stress to the foot. This makes it a suitable foot support for boots. Furthermore, by providing a fixing part on the bottom, the main body can be easily attached to and detached from the boots, making it a highly convenient foot fixing device for boots. In addition, because the main body is made of a cushioning fabric, it can support the wearer's foot while applying appropriate pressure to various points according to the shape of the foot, providing even firmer support and resulting in a foot support device for boots that offers a superior fit.

[0011] Furthermore, claims 5 According to the foot fixation device for boots described above, in addition to the effects of the configuration described in claim 3 or 4, the front instep band and the rear instep band extend in directions that intersect each other, thereby providing even more secure support to the metatarsal bones, cuneiform bones, and navicular bones.

[0012] Furthermore, claims 6 The foot support device for boots described above, in addition to the effects of the configuration described in claim 1, can provide integrated support from the metatarsal bones through the heel to the calf simply by tightening the fixing laces on the front side of the foot, thereby further increasing the stability of the foot. Furthermore, by forming the main body with a length that can cover from the metatarsal bones, past the heel, to the calf, it becomes possible to effectively move the toes inside the boot, allowing for better grip even on unstable surfaces, and providing a secure hold without causing excessive stress to the foot. This makes it a suitable foot support for boots. Furthermore, when attached to the boots, if the boot foot restraint has a certain length in the vertical direction of the boot, it is possible to make the boots easy to put on and take off even when the boot foot restraint is left inside the boot for an extended period of time. Furthermore, by providing an opening in the heel area, it becomes possible to insert an insole between the sole of the foot and the foot support. This allows, for example, the use of currently used insoles inside boots, more effectively preventing misalignment of the foot bones and resulting in a foot support for boots that provides greater body stability. Additionally, by effectively creating arch support through the insole, body balance can be further stabilized, reducing foot fatigue and enabling the maintenance of good posture. Furthermore, by providing fixing parts on the bottom and back, the main body can be attached to the boot even more securely, making it a foot fixing device for boots. In addition, because the main body is made of a cushioning fabric, it can support the wearer's foot while applying appropriate pressure to various points according to the shape of the foot, providing even firmer support and resulting in a foot support device for boots that offers a superior fit.

[0013] Furthermore, according to the foot fastener for boots described in claim 7, in addition to the effects of the configuration described in claim 6, the fastening lace insertion portion is equipped with a hook-and-loop fastener portion, and the fastening lace insertion portion is detachably attached to the outer circumferential surfaces of the inner covering portion and the outer covering portion via the hook-and-loop fastener portion, so that the attachment position of the fastening lace insertion portion to the inner covering portion and the outer covering portion can be easily changed. Therefore, it is possible to provide a foot fastener for boots that can be fitted to the wearer's foot even more closely, despite its simple configuration.

[0014] Furthermore, according to the foot fixing device for boots described in claim 8, in addition to the effects and advantages of the configuration described in claim 1, the foot fixing device for boots can be attached to boots simply by inserting the intake and exhaust port through the through hole of the boot and fixing the fixing part to the fixing part of the boot. Therefore, it is possible to provide a foot fixing device for boots that is easy to attach to and detach from boots. In addition, by simply filling the bag body with gas, the bag body can contact the wearer's upper back part and support the middle metatarsal bone, cuneiform bone, and navicular bone. Therefore, the foot can be fixed more easily in the boots, and the foot fixing device for boots can be made to fit the wearer's foot more closely by simply manipulating the amount of gas injected. Thus, a foot fixing device for boots with even higher convenience can be provided.

[0015] Moreover, according to the foot fixing device for boots described in claim 9, in addition to the operational effects of the configuration described in claim 1, the foot fixing device for boots can be attached to the boots simply by wearing socks and then the boots, and the foot can be fixed in the boots. Therefore, a foot fixing device for boots with even higher convenience can be provided. In addition, by providing a low stretch part with less stretchability than other parts at the position covering the middle metatarsal bone, cuneiform bone, and navicular bone of the sock, the middle metatarsal bone, cuneiform bone, and navicular bone can be firmly supported simply by wearing the sock. Thus, a foot fixing device for boots with even higher convenience can be provided. In addition, by providing an insole holding part in the area corresponding to the length from the middle metatarsal bone to the navicular bone across the cuneiform bone on the bottom surface of the sock, it becomes possible to insert and use an insole on the bottom surface of the sock. As a result, for example, it becomes possible to use the currently used insole in the boots, and it is possible to more effectively prevent the misalignment (arrangement) of the foot bones, and a foot fixing device for boots that can further stabilize the body can be provided. Also, by effectively creating an arch through the insole, the balance of the body can be further stabilized, thereby making the feet less likely to get tired and enabling a good posture to be maintained. Furthermore, by providing a fixing part on the bottom surface of the insole holding part, the attachment and detachment between the main body part and the boots can be easily performed, and a foot fixing device for boots with high convenience can be provided.

Brief Description of the Drawings

[0016] [Figure 1]The figure shows a foot fixation device for boots according to the first embodiment of the present invention, where (a) shows the foot fixation device for boots attached to a boot, (b) shows the foot fixation device for boots worn on a foot, and (c) is an exploded view. [Figure 2] This figure shows a foot fixing device for boots according to the first embodiment of the present invention, where (a) is a left side view, (b) is a rear view, and (c) is a bottom view. [Figure 3] The figure shows a foot fixation device for boots according to the first embodiment of the present invention, where (a) is a front view showing only the front instep band engaged, (b) is a front view showing all of the instep bands (front instep band, rear instep band, and ankle band) engaged, and (c) is a side view schematically showing the bones of the foot. [Figure 4] The figure shows a foot fixation device for boots according to a second embodiment of the present invention, where (a) shows the foot fixation device for boots attached to the foot, (b) is a perspective view, and (c) is a left side view. [Figure 5] This figure shows a foot fastener for boots according to a second embodiment of the present invention, where (a) is a bottom view, (b) is a right side view showing the instep rear band in a disengaged state, and (c) is an exploded view. [Figure 6] This figure shows a foot fixing device for boots according to a third embodiment of the present invention, where (a) is a right side view and (b) is a left side view. [Figure 7] This figure shows a foot fixing device for boots according to a third embodiment of the present invention, where (a) is a rear view, (b) is a front view, and (c) is an exploded view. [Figure 8] The figure shows a foot fixation device for boots according to a fourth embodiment of the present invention, where (a) is a perspective view of a boot with the foot fixation device attached, (b) is a side view of a boot with the foot fixation device attached, and (c) is a front view and a left side view of the foot fixation device for boots. [Figure 9] The figure shows a foot fixation device for boots according to a fifth embodiment of the present invention, where (a) is a side view of the foot fixation device for boots being worn on the foot, (b) is a bottom view of the foot fixation device for boots being worn, (c) is a cross-sectional view of the main part in the vertical direction, and (d) is a side view of the foot fixation device for boots being worn on the foot while holding the insole. [Modes for carrying out the invention]

[0017] The following description of a foot restraint device for boots according to an embodiment of the present invention will be explained with reference to the drawings to facilitate understanding of the present invention. However, the following description is not intended to limit the present invention as described in the claims. In addition, the foot fixation device 1 for boots according to the first embodiment of the present invention shown in Figures 1 to 3, the foot fixation device 2 for boots according to the second embodiment of the present invention shown in Figures 4 and 5, the foot fixation device 3 for boots according to the third embodiment of the present invention shown in Figures 6 and 7, and the foot fixation device 4 for boots according to the fourth embodiment of the present invention shown in Figure 8 will be described as a foot fixation device for the left foot, while the foot fixation device 5 for boots according to the fifth embodiment of the present invention shown in Figure 9 will be described as a foot fixation device for the right foot.

[0018] First, with reference to Figures 1 to 3, a foot fixing device 1 for boots according to the first embodiment of the present invention will be described.

[0019] Referring to Figure 1(a), the foot fixation device 1 for boots according to the first embodiment of the present invention is for fixing the foot H inside the boots N while wearing the boots N. Furthermore, this foot fixation device 1 is used by attaching the foot fixation device 1 to the foot H and then putting on the boots N. As shown in Figures 1 and 3(c), this foot support device 1 for boots is made of a cushioned mesh-like fabric that is long enough to cover from the metatarsal bone K1 through the heel to the Achilles tendon, and includes a main body 10 that is formed in a roughly L-shape and has a structure that can support the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 when worn. In this embodiment, the entire area of ​​the main body 10 is formed with a cushioning mesh fabric, but the configuration is not necessarily limited to this, and only a predetermined area of ​​the main body 10 may be formed with a cushioning mesh fabric.

[0020] Furthermore, as shown in Figures 1 to 3, the device includes an instep front band 20 provided at one end to cover the toe side of the instep when worn and to be detachably engaged with the other end of the main body 10; an instep rear band 30 provided at one end of the main body 10 on the heel side of the instep front band 20 to cover the heel side of the instep when worn and to be detachably engaged with the other end of the main body 10; and an ankle band 40 provided at one end of the main body 10 that covers the Achilles tendon to cover the ankle when worn and to be detachably engaged with the other end of the main body 10. Furthermore, in this embodiment, as shown in Figure 3(a), the instep front band 20 and the instep rear band 30, which constitute the instep band, are configured to extend in directions that intersect each other. More specifically, the instep front band 20 extends from the inside to the outside of the foot H, and the instep rear band 30 extends from the outside to the inside of the foot H. In addition, the ankle band 40 is configured to extend in the same direction as the instep front band 20. Furthermore, in this embodiment, as shown in Figure 1, the rear instep band 30 is wider and longer than the front instep band 20.

[0021] Furthermore, the tip portions of the front instep band 20, the rear instep band 30, and the ankle band 40 are each provided with engaging pieces 21, 31, and 41, which are detachably engaged with the main body 10. Specifically, in this embodiment, the engaging pieces 21, 31, and 41 are formed using hook-and-loop fasteners, and a first engaging piece receiving portion 11, a second engaging piece receiving portion 12, and a third engaging piece receiving portion 13 are provided in the area of ​​the main body 10 that contacts the engaging pieces 21, 31, and 41, and are made of a fabric that can detachably engage with the hook-and-loop fasteners. More specifically, as shown in Figure 1(c), in this embodiment, the first engaging piece receiving portion 11 and the third engaging piece receiving portion 13 are made of the same fabric. The instep front band 20 and instep rear band 30 described above constitute a structure that can support the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 when worn according to the present invention. The engaging pieces 21, 31, and 41 are not necessarily limited to hook-and-loop fasteners. Other materials may be used as long as they can engage with the first engaging piece receiving portion 11, the second engaging piece receiving portion 12, and the third engaging piece receiving portion 13 provided on the main body portion 10. However, considering ease of use and cost, it is desirable that the engaging pieces 21, 31, and 41 be formed from hook-and-loop fasteners.

[0022] Furthermore, as shown in Figures 1 to 3, the main body 10 is provided with an opening 14 at a position that covers the heel. This opening 14 is for inserting an insole between the sole of the foot and the foot fixation device 1 when worn. In this embodiment, the opening 14 is formed in a circular shape. Of course, the shape and size of the opening 14 are not limited to those of this embodiment, and can be changed as appropriate as long as an insole can be inserted between the sole of the foot and the foot fixation device 1 when worn.

[0023] Furthermore, as shown in Figures 1 and 2, the bottom surface of the main body 10 is provided with a fixing part 15 that can be detachably attached to the boot N by detachably engaging with a fixing part (not shown) installed inside the boot N. In this embodiment, the fixing part 15 is formed with hook-and-loop fasteners, and the fixing part (not shown) inside the boot N is formed using a fabric that can be detachably engaged with the hook-and-loop fasteners. The shape, size, and thickness of the fixing part 15 are not limited to those of this embodiment and can be appropriately changed to match the fixing part provided inside the boot N. Furthermore, the fixing part 15 is not necessarily limited to hook-and-loop fasteners; other materials can be used as long as they can engage with the fixing part (not shown) provided inside the boot N. However, considering ease of use and cost, it is desirable that the fixing part 15 be made of hook-and-loop fasteners.

[0024] As shown in Figure 1(c), the foot fixing part 1 for boots, having the above configuration, can be formed by sewing together the areas indicated by the diagonal lines in Figure 1(c) with the upper back band 30, engaging piece 21, engaging piece 31, engaging piece 41, first engaging piece receiving part 11 (third engaging piece receiving part 13), second engaging piece 12, and fixing part 15 at predetermined positions on the main body part 10 which has been formed into a predetermined shape.

[0025] Based on the above configuration, the foot fixing device 1 for boots according to the first embodiment of the present invention provides the following effects.

[0026] By supporting the foot from the metatarsal bone K1 through the cuneiform bone K2 to the navicular bone K3, the foot can be fixed inside the boot N, improving the fit between the foot H and the boot N, and effectively preventing the alignment of the bones of the foot H from collapsing. This stabilizes the body and effectively reduces the load on the entire body. Therefore, this foot fixation device 1 for boots can reduce fatigue for the wearer of the boots. Furthermore, by providing support from the metatarsal bone K1 through the cuneiform bone K2 to the navicular bone K3, it becomes possible to maintain balance and preserve the body's natural functions even when standing and working while wearing boots N. Furthermore, it prevents the foot from floating inside the boots N, which effectively prevents the heels of the boots N from rubbing and increases their durability. In addition, it becomes possible to run while wearing the boots N.

[0027] Furthermore, by providing a front instep band 20, a rear instep band 30, and an ankle band 40, the metatarsal bones K1, cuneiform bones K2, and navicular bone K3 can be supported even more firmly, and the ankle can also be firmly supported. In addition, by forming the engaging pieces 21, 31, and 41 with hook-and-loop fasteners, the foot fixation device 1 can be easily attached to and detached from the foot H, and the amount of tightening of the front instep band 20, rear instep band 30, and ankle band 40 can be easily adjusted to suit the wearer's foot H, resulting in a highly convenient foot fixation device 1 for boots. Furthermore, by configuring the anterior instep band 20 and the posterior instep band 30 to extend in directions that intersect each other, the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 can be supported even more firmly. Furthermore, by making the posterior instep band 30 wider and longer than the anterior instep band 20, it becomes possible to firmly support the cuneiform bone K2, which is the center of the foot's center of gravity and is located where finer bones than metatarsal bone K1 are concentrated, thereby effectively preventing further disruption of the alignment (arrangement) of the bones of the foot H. Furthermore, by forming the main body 10 with a length that can cover from the metatarsal bone K1, past the heel, to the Achilles tendon, it becomes possible to effectively move the toes of the foot H inside the boot N, allowing the wearer to maintain their balance even on unstable surfaces, and providing a secure hold without causing excessive stress to the foot H. In addition, since the main body 10 is made of a cushioned mesh fabric, it can support the wearer's foot H while applying appropriate pressure to various points, providing even firmer support to the foot, and resulting in a boot foot fixation device 1 with excellent fit and breathability.

[0028] Furthermore, by providing an opening 14 at a position that covers the heel, it becomes possible to insert an insole (not shown) between the sole of the foot and the foot fixation device 1. This makes it possible, for example, to use an insole currently in use inside the boots N, thereby more effectively preventing the alignment of the bones of the foot H from collapsing and creating a foot fixation device 1 for boots that provides even greater body stability. In addition, by effectively creating an arch in the foot through the insole, the body's balance can be further stabilized, which reduces foot fatigue and makes it possible to maintain good posture. Furthermore, by providing a fixing part 15 formed with hook-and-loop fasteners on the bottom surface, the main body 10 and the boots N can be easily attached and detached, resulting in a highly convenient foot fixing device 1 for boots. The various effects described above are especially useful for those who use rubber boots for standing work such as fishing and farming.

[0029] Next, with reference to Figures 4 and 5, a foot fixing device 2 for boots according to a second embodiment of the present invention will be described. In the foot fixing devices 2, 3, and 5 for boots according to the second embodiment of the present invention described below, the boots will not be shown. Referring to Figure 4, the foot fixation device 2 for boots according to the second embodiment of the present invention is for fixing the foot inside the boot while wearing the boot. Furthermore, this foot fixation device 2 is used by attaching the foot fixation device 2 to the foot H and then putting on the boot. As shown in Figure 4(a), this foot support device 2 for boots is made of a cushioned mesh-like fabric that is long enough to cover the metatarsal bone K1, the cuneiform bone K2, and the navicular bone K3, and includes a main body 100 that has a structure capable of supporting the metatarsal bone K1, the cuneiform bone K2, and the navicular bone K3 when worn. In this embodiment, the entire area of ​​the main body 100 is formed with a cushioning mesh fabric, but the configuration is not necessarily limited to this, and only a portion of the main body 100 may be formed with a cushioning mesh fabric.

[0030] Furthermore, as shown in Figures 4 and 5, the instep includes a front instep band 200 provided at one end to cover the toe side of the instep when worn and to be detachably engaged with the other end of the main body 100, and a rear instep band 300 provided at one end of the main body 100 on the heel side of the front instep band 200 to cover the heel side of the instep when worn and to be detachably engaged with the other end of the main body 100. Furthermore, in this embodiment, as shown in Figures 4(b) and 5(b), the instep front band 2000 and the instep rear band 300 are configured to extend in directions that intersect each other. More specifically, the instep front band 200 extends from the outside to the inside of the foot H, and the instep rear band 300 extends from the inside to the outside of the foot H. Furthermore, in this embodiment, as shown in Figures 4 and 5, the rear band 300 for the instep is wider and longer than the front band 200 for the instep.

[0031] Furthermore, the front band 200 for the instep and the rear band 300 for the instep are each provided with engaging pieces 210 and 310, respectively, which are detachably engaged with the main body 100. Specifically, in this embodiment, the engaging pieces 210 and 310 are formed from hook-and-loop fasteners, and a first engaging piece receiving portion 110 and a second engaging piece receiving portion 120, made of a fabric capable of detachably engaging with the hook-and-loop fasteners, are provided in the area of ​​the main body 100 that contacts the engaging pieces 210 and 310. The instep front band 200 and instep rear band 300 described above constitute a structure that can support the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 when worn according to the present invention. The engaging pieces 210 and 310 are not necessarily limited to hook-and-loop fasteners; other materials may be used as long as they can engage with the first engaging piece receiving portion 110 and the second engaging piece receiving portion 120 provided on the main body portion 100. However, considering ease of use and cost, it is desirable that the engaging pieces 210 and 310 be formed from hook-and-loop fasteners.

[0032] Although not shown in the diagram, this boot-type foot restraint 2 can also be used by inserting an insole between the sole of the foot and the foot restraint 2 when wearing it, similar to the boot-type foot restraint 1 described above.

[0033] Furthermore, as shown in Figure 5, the bottom surface of the main body 100 is provided with a fixing part 130 that can be detachably attached to the boot by engaging with a fixing part installed inside the boot. In this embodiment, the fixing part 130 is formed using hook-and-loop fasteners, and the fixing part inside the boot is formed using a fabric that can be detachably engaged with the hook-and-loop fasteners. The shape, size, and thickness of the fixing part 130 are not limited to those of this embodiment and can be appropriately changed to match the fixing part installed inside the boot. Furthermore, the fixing part 130 is not necessarily limited to hook-and-loop fasteners; other materials can be used as long as they can engage with the fixing part installed inside the boot. However, considering ease of use and cost, it is desirable for the fixing part 130 to be made of hook-and-loop fasteners.

[0034] As shown in Figure 5(c), the foot fixing part 2 for boots, having the above configuration, can be formed by sewing the instep rear band 300, engaging piece 210, engaging piece 310, first engaging piece receiving part 110, second engaging piece 120, and fixing part 130 to a predetermined position on the main body part 100 which is formed into a predetermined shape.

[0035] Based on the above configuration, the foot fixing device 2 for boots according to the second embodiment of the present invention provides the following effects.

[0036] By providing an instep front band 200 and an instep rear band 300, the metatarsal bones K1, cuneiform bones K2, and navicular bones K3 can be supported even more firmly. In addition, by forming the engaging pieces 210 and 310 with hook-and-loop fasteners, not only is it easy to attach and detach the foot fixation device 2 to the foot H, but the amount of tightening of the instep front band 200 and instep rear band 300 can be easily adjusted to suit the wearer's foot H, resulting in a highly convenient foot fixation device 2 for boots. Furthermore, by configuring the anterior instep band 200 and the posterior instep band 300 to extend in directions that intersect each other, the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 can be supported even more firmly. Furthermore, by making the posterior instep band 300 wider and longer than the anterior instep band 200, it becomes possible to firmly support the cuneiform bone K2, which is the center of the foot's center of gravity and is located where finer bones than metatarsal bone K1 are concentrated, thereby effectively preventing further disruption of the alignment (arrangement) of the bones of the foot H. Furthermore, by forming the main body 100 with a length that can cover from the metatarsal bone K1 to the navicular bone K3, extending beyond the cuneiform bone K2, it becomes possible to effectively move the toes of the foot H inside the boot, allowing the wearer to maintain their balance even in unstable places, and providing a secure hold without causing excessive stress to the foot H. This results in a foot fixation device 2 for boots. In addition, since the main body 100 is made of a cushioned mesh fabric, it can support the wearer's foot H while applying appropriate pressure to various points according to its shape, thereby providing even more secure support to the foot H, and resulting in a foot fixation device 2 for boots that offers excellent fit and breathability.

[0037] Furthermore, by providing a fixing part 130 formed with hook-and-loop fasteners on the bottom surface, the main body 100 and the boots can be easily attached and detached, resulting in a highly convenient foot fixing device 2 for boots. Furthermore, by inserting an insole between the sole of the foot and the foot fixation device 2, it becomes possible to use the currently used insole inside the boot, which can more effectively prevent the alignment of the bones of the foot H from collapsing, resulting in a foot fixation device 2 for boots that provides even greater body stability. In addition, by effectively creating arch support through the insole, the body's balance can be further stabilized, which reduces foot fatigue and makes it possible to maintain good posture. The various effects described above are especially useful for those who use rubber boots for standing work such as fishing and farming.

[0038] Next, with reference to Figures 6 and 7, a foot fixing device 3 for boots according to a third embodiment of the present invention will be described. The foot restraint device 3 for rubber boots according to the third embodiment of the present invention is for securing the foot inside the rubber boot while wearing the boot. Furthermore, this foot restraint device 3 can be used either by attaching the foot restraint device 3 to the foot H and then putting on the rubber boot, or by first securing the foot restraint device 3 inside the rubber boot and then putting on the rubber boot. However, considering convenience during use, it is preferable to first secure the foot restraint device 3 inside the rubber boot (permanently securing the foot restraint device 3 to the rubber boot) before putting on the rubber boot. As shown in Figures 6 and 7, this foot support device 3 for boots is made of a cushioned mesh-like fabric that is long enough to cover from the metatarsal bone K1 through the heel to the calf, and includes a main body 50 that has a structure capable of supporting the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 when worn. In this embodiment, the entire area of ​​the main body 50 that comes into contact with the foot H (the inside of the main body 50) is made of a mesh-like fabric with cushioning properties, and the entire area of ​​the main body 50 that does not come into contact with the foot H (the outside of the main body 50) is made of a mesh-like fabric that can be detachably engaged with hook-and-loop fasteners. However, the configuration is not necessarily limited to this, and the main body 50 that comes into contact with the foot H (the inside of the main body 50) may be made of a mesh-like fabric with cushioning properties in only a portion of the area.

[0039] Furthermore, the main body 50 comprises an inner covering portion 51 that covers the inside of the foot H and an outer covering portion 52 that covers the outside of the foot H to the front, sharing a common back surface. The outer circumferential surfaces of the inner covering portion 51 and the outer covering portion 52 are provided with multiple fixing string insertion portions 60 for inserting a fixing string F that can be used to securely fasten the inner covering portion 51 and the outer covering portion 52 together when attached. The fixing string F is alternately inserted into the fixing string insertion portions 60 provided on the inner covering portion 51 and the fixing string insertion portions 60 provided on the outer covering portion 52 on the front side of the foot H. Specifically, as shown in Figures 6 and 7, in this embodiment, the fixing cord insertion section 60 is configured to use a rectangular strip of resin fabric of a predetermined length. This strip of fabric is provided with a hook-and-loop fastener section 61, which is made by sewing a rectangular hook-and-loop fastener to a predetermined area on one end (an area extending approximately 2 cm from the end), and also with a hook-and-loop fastener section 61, which is made by sewing a rectangular hook-and-loop fastener to a predetermined area on the other end (an area extending approximately 2 cm from the end) and on the reverse side of the predetermined area on the one end. The fixing cord insertion section 60, configured in this way, is folded in the center to form a roughly V-shape, and the hook-and-loop fastener sections 61 at both ends are engaged with the main body section 50 to attach it. The number and placement of the fixing strap insertion points 60 are not limited to those of this embodiment and can be changed as appropriate to suit the wearer. Furthermore, the configuration of the fixing strap insertion points 60 is not limited to those of this embodiment and can be any other configuration as long as it allows the fixing strap F to be inserted and can be detachably attached to the main body 50.

[0040] Furthermore, in this embodiment, a fixing position adjuster C, which allows adjustment of the amount of tightening of the fixing string F, is attached to the fixing string F. Specifically, the fixing position adjuster C is a commonly used resin component that allows the fixing string F to be tightened by pulling the fixing string F, which is inserted through the fixing position adjuster C, outward while gripping the fixing position adjuster C, thereby integrally tightening the inner covering portion 51 and the outer covering portion 52. By pressing the fixing position adjuster C and pulling the fixing position adjuster C outward, the tightening of the fixing string F is released, thereby integrally opening the inner covering portion 51 and the outer covering portion 52.

[0041] The main body 50, the fixing cord insertion part 60, the fixing cord F, and the fixing position adjustment device C constitute a structure that can support the metatarsal bones K1, cuneiform bones K2, and navicular bones K3 when worn, according to the present invention.

[0042] Furthermore, as shown in Figures 6 and 7, the main body 50 is provided with an opening 53 at a position that covers the heel. This opening 53 is for inserting an insole between the sole of the foot and the foot fixation device 3 when worn. In this embodiment, the opening 53 is formed in a circular shape. Of course, the shape and size of the opening 53 are not limited to those of this embodiment, and can be changed as appropriate as long as an insole can be inserted between the sole of the foot and the foot fixation device 3 when worn.

[0043] Furthermore, as shown in Figures 6 and 7, the bottom and back surfaces of the main body 50 are provided with fixing parts 54 that can be detachably attached to the boots by engaging with fixing parts installed inside the boots. In this embodiment, the fixing parts 54 are formed using hook-and-loop fasteners, and the fixing parts inside the boots are formed using a fabric that can be detachably engaged with the hook-and-loop fasteners. The shape, size, and thickness of the fixing portion 54 are not limited to those of this embodiment and can be appropriately changed to match the fixing portion installed inside the boot. Furthermore, the fixing portion 54 is not necessarily limited to hook-and-loop fasteners; other materials can be used as long as they can engage with the fixing portion installed inside the boot. However, considering ease of use and cost, it is desirable for the fixing portion 54 to be made of hook-and-loop fasteners.

[0044] As shown in Figure 7(c), the foot fixing part 3 for boots, which has the above configuration, can be formed by sewing the fixing part 54 to a predetermined position on the main body part 50 which has been formed into a predetermined shape, folding it in the dashed line position shown in Figure 7(c), and sewing together the areas shown by the diagonal lines.

[0045] Based on the above configuration, the foot fixing device 3 for boots according to the third embodiment of the present invention provides the following effects.

[0046] By simply tightening the fixing strap F on the front side of the foot H, it is possible to provide integrated support from the metatarsal bone K1, over the heel, to the calf, thereby creating a boot-type foot fixation device 3 that significantly increases the stability of the foot H. Furthermore, by forming the main body 50 with a length that can cover from the metatarsal bone K1, past the heel, to the calf, it becomes possible to effectively move the toes of the foot H inside the boot, allowing the wearer to maintain their balance even on unstable surfaces, and providing a secure hold without causing excessive stress to the foot H. This results in a boot-type foot fixation device 3. In addition, since the main body 50 is made of a cushioned mesh fabric, it can support the wearer's foot H while applying appropriate pressure to various points according to its shape, providing even more secure support to the foot H, and resulting in a foot fixation device 3 for boots that offers excellent fit and breathability. Furthermore, when attached to a boot, the boot foot fixation device 3 has a certain length in the vertical direction of the boot, so that when the boot foot fixation device 3 is left inside the boot for a long period of time, the boot can be made easy to put on and take off even with the boot foot fixation device 3 in place. In addition, by simply tightening the fixing laces F inside the boot, the foot can be supported integrally from the metatarsal bone K1 over the heel to the calf, making the boot foot fixation device 3 highly convenient.

[0047] Furthermore, by providing an opening 54 in a position that covers the heel, it becomes possible to insert an insole between the sole of the foot and the foot fixation device 3. This allows, for example, the use of currently used insoles inside boots, which can more effectively prevent the alignment of the foot bones from collapsing and make the foot fixation device for boots more stable. In addition, by effectively creating an arch in the foot through the insole, the body's balance can be further stabilized, which reduces foot fatigue and makes it possible to maintain good posture. Furthermore, by providing fixing parts 54 on the bottom and back, the main body can be attached to the boot more securely, and the main body 50 can be easily attached to and detached from the boot, resulting in a highly convenient foot fixing device 3 for boots.

[0048] Furthermore, the fixing string insertion portion 60 is equipped with a hook-and-loop fastener portion 61, and the fixing string insertion portion 60 is detachably attached to the outer circumferential surfaces of the inner covering portion 51 and the outer covering portion 52 via the hook-and-loop fastener portion 61. This configuration allows for easy changes in the attachment position of the fixing string insertion portion 60 to the inner covering portion 51 and the outer covering portion 52. Thus, a foot fixation device 3 for boots can be made that fits the wearer's foot H even better, despite its simple configuration. The various effects described above are especially useful for those who use rubber boots for standing work such as fishing and farming, as well as for those who use rubber boots for work that requires quick preparation before starting work.

[0049] Next, with reference to Figure 8, a foot fixing device 4 for boots according to a fourth embodiment of the present invention will be described. The foot restraint device 4 for boots according to the fourth embodiment of the present invention is for securing the foot inside the boot while wearing the boot N. As shown in Figure 8, this foot fixation device 4 for rubber boots comprises a main body 70 formed from an expandable resin bag. The bag also has an air intake / exhaust port 71 at a predetermined location, which allows gas to be introduced and released, and which can expand from the bag and be inserted into a through hole N1 provided in the upper part of the toe side of the rubber boot N. Fixing parts 72 are provided at predetermined areas (areas enclosed by an area of ​​about 2 cm from the end) at both the upper and lower ends of the surface of the bag having the air intake / exhaust port 71. Furthermore, in this embodiment, the main body 70 and the intake / exhaust port 71 are integrally molded from resin. In addition, hook-and-loop fasteners are used as the fixing part 72. Furthermore, although not shown in detail in the illustration, the tip of the intake / exhaust shoe opening 71 is provided with a resin plug 71a that can be fitted into the intake / exhaust shoe opening 71.

[0050] Furthermore, as shown in Figure 8(c), since the intake and exhaust port 71 needs to be exposed to the outside of the boot N by passing through the through hole N1 from the inside of the boot N, the length of the intake and exhaust port 71 needs to be longer than the thickness of the fixing part 72. Although not shown in the diagram, a fabric is attached to the inner surface of the through-hole N1 of the boot N, to which the hook-and-loop fastener constituting the fixing part 72 can be detachably engaged. The resin used to form the main body 70 can be, for example, polyvinyl chloride, but is not limited to this; any resin that can expand and contract by injecting or releasing gas may be used. The size of the main body 70 can be appropriately changed depending on the size of the boots and the wearer's feet, but it is desirable to use a bag with a vertical length of approximately 60 mm, a horizontal length of approximately 130 mm, and a thickness of approximately 25 mm to 30 mm when filled with gas. As for the gas, any gas that can inflate the resin bag and is harmless to the wearer may be used, such as air or nitrogen. The main body 70, air intake / exhaust port 71, plug 71a, and fixing part 72 described above constitute a structure that can support the metatarsal bone K1, cuneiform bone K2, and navicular bone K3 when worn, according to the present invention.

[0051] The foot fixation device 4 for rubber boots, having the above configuration, is used by first attaching the foot fixation device 4 to a predetermined position inside the rubber boots N via the fixing part 72 before putting on the rubber boots N, and then inflating the main body 70 to a size that can support the metatarsal bones K1, cuneiform bones K2, and navicular bone K3 by injecting gas into the main body 70 using a gas injection device (not shown).

[0052] The foot fixation device 4 for boots, having the above configuration, provides the following effects.

[0053] The boot foot fastener 4 can be attached to the boot N simply by inserting the air intake / exhaust port 71 through the through hole N1 of the boot N and fixing the fixing part 72 to the fixing part of the boot N. Therefore, the boot foot fastener 4 can be made easy to attach to and detach from the boot N. Furthermore, by simply filling the bag that constitutes the main body 70 with gas, the bag can come into contact with the instep of the wearer and support the metatarsal bones K1, cuneiform bones K2, and navicular bones K3. Therefore, the foot fixation device 4 for boots can be made to fix the foot H inside the boot N more easily, and can be made to fit the wearer's foot H more precisely by simply adjusting the amount of gas injected. Thus, the foot fixation device 4 for boots can be made to be more convenient. The various effects described above are especially useful for those who use rubber boots for standing work such as fishing and farming, as well as for those who use rubber boots for work that requires quick preparation before starting work.

[0054] Next, with reference to Figure 9, a foot fixing device 5 for boots according to a fifth embodiment of the present invention will be described. The foot fixation device 5 for boots according to the fifth embodiment of the present invention is for fixing the foot inside the boot while wearing the boot. As shown in Figure 9, this foot support device 5 for boots includes a main body 80 made of a sock formed from an elastic fabric. Furthermore, the main body portion 80 is provided with a low-stretch portion 81 that has less elasticity than other parts, in the area covering the metatarsal bones K1, cuneiform bones K2, and navicular bones K3. Specifically, this low-stretch portion 81 is formed of a knitted structure that can provide a function of pressing on the metatarsal bones K1, cuneiform bones K2, and navicular bones K3 when worn, thus adding a taping function to a so-called general-purpose sock.

[0055] Furthermore, the bottom surface of the main body 80 is provided with an insole holding portion 82 that allows the insole 90 to be inserted and removed freely in a region corresponding to the length from the metatarsal bone K1 to the navicular bone K3, beyond the cuneiform bone K2. Specifically, in this embodiment, an insole holding portion member is formed using the same fabric as that which forms the main body 80, and has the same shape as the region on the bottom surface of the main body 80 that corresponds to the length from the metatarsal bone K1 to the navicular bone K3, beyond the cuneiform bone K2. The entire length of the short end of this insole holding portion member is sewn to the main body 80, so that as shown in Figure 9(b), a cavity S thinner than the thickness of the insole 90 is formed between the main body 80 and the insole holding portion 82. The material, shape, size, and formation method of the insole retaining portion 82 are not limited to the configuration of this embodiment. Other configurations are also acceptable as long as they allow for the formation of a portion that can freely insert and remove the insole 90 in a region corresponding to the length from the metatarsal bone K1 to the navicular bone K3, beyond the cuneiform bone K2. However, considering convenience during use and the holding power of the metatarsal bone K1, cuneiform bone K2, and navicular bone K3, it is desirable to form the insole retaining portion 82 with an elastic fabric.

[0056] Furthermore, as shown in Figure 9, a fixing portion 83 is provided on the bottom surface of the insole holding portion 82. In this embodiment, a hook-and-loop fastener is used as the fixing portion 83, and a fabric that can be detachably engaged with the hook-and-loop fastener constituting the fixing portion 83 is attached to the inner surface of the sole of the boot (not shown).

[0057] The foot fixation device 5 for rubber boots, which has the above configuration, is normally used as shown in Figure 9(d). In normal use, the main body 80 is attached to the foot H, the insole 90 is inserted into the insole holder 82 in the direction indicated by the black arrow in Figure 9(d), and then the rubber boots are put on and the fixing part 83 is engaged with the fixing part attached to the rubber boots. Of course, it is also possible to use it without inserting the insole 90 into the insole holder 82, but considering the various effects on the foot H, it is desirable to use it with the insole 90 inserted into the insole holder 82.

[0058] The foot fixation device 5 for rubber boots, having the above configuration, provides the following effects.

[0059] By simply putting on the socks that make up the main body 80 and then putting on the boots, the foot fixation device 5 for boots can be attached to the boots, and the feet can be secured inside the boots. Therefore, the foot fixation device 5 for boots can be made even more convenient. Furthermore, by providing a low-stretch portion 81 in the area covering the metatarsal bones K1, cuneiform bones K2, and navicular bone K3 of the main body 80 (sock), the metatarsal bones K1, cuneiform bones K2, and navicular bone K3 can be firmly supported simply by wearing the sock. Thus, the foot fixation device 5 for boots can be made even more convenient.

[0060] Furthermore, by providing an insole holding section 82 in the area of ​​the bottom surface of the main body 80 (sock) corresponding to the length from the metatarsal bone K1 to the navicular bone K3 beyond the cuneiform bone K2, it becomes possible to insert an insole 90 into the bottom surface of the main body 80 (sock) and use it. This makes it possible, for example, to use the currently used insole inside the boot, thereby more effectively preventing the alignment (arrangement) of the bones of the foot H from collapsing, and creating a boot foot fixation device 5 that can further stabilize the body. In addition, by effectively creating an arch in the foot via the insole 90, the balance of the body can be further stabilized, which makes the foot H less prone to fatigue and allows for better posture to be maintained. Furthermore, by providing a fixing part 83 formed by hook-and-loop fasteners on the bottom surface of the insole holding part 82, and by attaching a fabric to the inner surface of the sole of the boot that can be detachably engaged with the hook-and-loop fasteners constituting the fixing part 83, the main body part 80 and the boot can be easily attached and detached, resulting in a highly convenient foot fixing device 5 for boots. The various effects described above are especially useful for those who use rubber boots for standing work such as fishing and farming, as well as for those who use rubber boots for work that requires quick preparation before starting work.

[0061] In the foot fixation device 1 for boots according to the first embodiment of the present invention, the foot fixation device 2 for boots according to the second embodiment, the foot fixation device 3 for boots according to the third embodiment, and the foot fixation device 4 for boots according to the fourth embodiment, which have been described as foot fixation devices for the left foot, and in the foot fixation device 5 for boots according to the fifth embodiment, which has been described as a foot fixation device for the right foot, the foot fixation device for the opposite foot has the same configuration in all cases.

[0062] Furthermore, in the foot fixation device 1 for boots according to the first embodiment of the present invention and the foot fixation device 2 for boots according to the second embodiment, the instep rear band 30 (instep rear band 300) is wider and longer than the instep front band 20 (instep front band 200) as described above, but the configuration is not necessarily limited to this. For example, the instep front band 20 (instep front band 200) and the instep rear band 30 (instep rear band 300) may be the same width and length. Furthermore, in the foot fixation device 1 for boots according to the first embodiment of the present invention and the foot fixation device 2 for boots according to the second embodiment, as described above, the instep front band 20 (instep front band 200) and the instep rear band 30 (instep rear band 300) are configured to have a constant thickness (width). However, the configuration is not necessarily limited to this, and for example, at least one of the instep front band 20 (instep front band 200) and the instep rear band 30 (instep rear band 300) may be configured so that the central part in the longitudinal direction is thinner than both ends. With such a configuration, it is possible to create a foot fixation device 1 (foot fixation device 2) for boots that can firmly support the foot from the metatarsal bones through the cuneiform bones to the navicular bone, while also allowing for easy flexion of the ankle. Furthermore, in the foot fixation device 1 for boots according to the first embodiment of the present invention described above, two types (two bands) of instep bands, an instep front band 20 and an instep rear band 30, are provided as instep bands that cover the instep when worn. However, the configuration is not necessarily limited to this, and a single wide band of one type (one band) that can integrally cover from the metatarsal bones to the navicular bone beyond the cuneiform bones may also be used as the instep band. With such a configuration, it is possible to make it difficult for the engagement between the instep band and the main body to come undone when the foot fixation device 1 is worn and boots N are put on. In this case, it is desirable that the instep band extends in a direction that intersects with the ankle band 40. More specifically, it is desirable that the single instep band extends from the inside to the outside of the foot, and the ankle band 40 extends from the outside to the inside of the foot. [Industrial applicability]

[0063] According to the present invention, the foot can be fixed inside a boot while supporting the bones from the metatarsal bones through the cuneiform bones to the navicular bone, and the toes can be effectively moved inside the boot. Therefore, it is useful in industrial fields related to boots and has great industrial potential. [Explanation of Symbols]

[0064] 1. Foot support for rubber boots 2. Foot support for rubber boots 3. Foot support for rubber boots 4. Foot support for rubber boots 5. Foot support for rubber boots 10 Main body 11 First engagement piece receiving part 12 Second engagement piece receiving part 13 Third engagement piece receiving part 14 Opening 15 Fixed part 20 Front band for foot 21 Engagement piece 30 Rear band for the instep 31 Engagement piece 40 Ankle band 41 Engagement piece 50 Main body 51 Inner covering 52 Outer covering part 53 Opening 54 Fixed part 60. Insertion section for securing the string. 61. Velcro fastener section 70 Main body 71 Intake and exhaust vents 71a Stopper 72 Fixed part 80 Main body 81 Low elasticity part 82 Insole retention section 83 Fixed part 90 Insoles 100 Main body 110 First engagement piece receiving part 120 Second engagement piece receiving part 130 Fixed part 200 Front band for foot 210 Engagement piece 300 Rear band for foot 310 Engagement piece C Fixed position adjustment tool F Fixing string H feet K1 Metatarsal bone K2 Cuneiform bone K3 navicular bone N Rain boots N1 through hole S cavity

Claims

1. A foot restraint for boots, for securing the foot inside the boot, comprising a main body having a structure capable of supporting the metatarsal bones, cuneiform bones, and navicular bone when worn, and a fixing part at a predetermined position on the outer surface of the main body, which engages detachably with a fixing part installed inside the boot, thereby enabling the main body to be detachably attached to the boot.

2. The foot restraint device for boots according to claim 1 is characterized in that the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones through the heel to the Achilles tendon, and comprises an instep band provided at one end that covers the instep when worn and is detachably engaged with the other end of the main body, and an ankle band provided at one end of the main body that covers the Achilles tendon and covers the ankle when worn and is detachably engaged with the other end of the main body, and has an opening at a position that covers the heel and a fixing part on the bottom surface.

3. The foot fastening device for boots according to claim 2, characterized in that the instep band is composed of an instep front band provided at one end of the main body, which covers the toe side of the instep when worn and is detachably engaged with the other end of the main body, and an instep rear band provided at one end of the main body on the heel side of the instep front band, which covers the heel side of the instep when worn and is detachably engaged with the other end of the main body.

4. The foot restraint device for boots according to claim 1, characterized in that the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones to the navicular bone beyond the cuneiform bones, and comprises an instep front band provided at one end that covers the toe side of the instep when worn and is detachably engaged with the other end of the main body, and an instep rear band provided at one end of the main body on the heel side of the instep front band that covers the heel side of the instep when worn and is detachably engaged with the other end of the main body, and a fixing part is provided on the bottom surface.

5. The foot restraint for boots according to claim 3 or 4, characterized in that the front band for the instep and the rear band for the instep extend in directions that intersect each other.

6. The foot fixation device for boots according to claim 1 is characterized in that the main body is made of a cushioning fabric having a length that can cover from the metatarsal bones to the calf beyond the heel, and comprises an inner covering portion that covers the inside of the foot and an outer covering portion that covers the outside of the foot, and each outer surface of the inner covering portion and the outer covering portion is provided with a plurality of fixing string insertion portions for inserting fixing strings that can be tightened and secured integrally when worn, and the fixing strings are alternately inserted into the fixing string insertion portions provided on the inner covering portion and the fixing string insertion portions provided on the outer covering portion on the front side of the foot, and has an opening at a position that covers the heel, and has fixing portions on the bottom and back.

7. The foot fastener for boots according to claim 6, characterized in that the fastening cord insertion portion is provided with a hook-and-loop fastener portion, and the fastening cord insertion portion is detachably attached to the outer peripheral surfaces of the inner covering portion and the outer covering portion via the hook-and-loop fastener portion.

8. The foot fixing device for boots according to claim 1, characterized in that the main body is formed of an expandable resin bag, and the bag has an intake / exhaust port at a predetermined location that allows gas to be injected and released, and that can expand from the bag and be inserted into a through hole provided in the upper part of the toe side of the boot, and that the side of the bag having the intake / exhaust port has a fixing part.

9. The foot fixation device for boots according to claim 1, characterized in that the main body is a sock made of an elastic fabric, the sock has a low-stretch portion that is less elastic than other parts in the area covering the metatarsal bones, cuneiform bones and navicular bone, the bottom surface of the sock has an insole holding portion that holds an insole that can be freely inserted and removed in an area corresponding to the length from the metatarsal bones to the navicular bone beyond the cuneiform bones, and the bottom surface of the insole holding portion has a fixing portion.

Images