WO2015174059A1

WO2015174059A1 - Foot supporter

Info

Publication number: WO2015174059A1
Application number: PCT/JP2015/002361
Authority: WO
Inventors: 一成福田
Original assignee: 株式会社福田武道具
Priority date: 2014-05-13
Filing date: 2015-05-09
Publication date: 2015-11-19
Also published as: JP6876168B2; JP2020078585A; JP6820096B2; JPWO2015174059A1

Abstract

[Problem] To provide a foot supporter which reduces a shock upon the soles and heel sites of the foot from loads caused when taking heavy strides, avoids interference with actions, and resolves a negative impact upon competition or practice, and which effects prevention of injury, etc., and improved safety, by reducing shocks upon the soles and heel sites of the foot. [Solution] Provided is a foot supporter, comprising: a removably worn main body (100) which is formed from a stretchable material and is configured from an ankle covering part (120), a heel covering part (140), an instep covering part (160), and a sole covering part (180); a first shock absorbing mechanism part (200) which is disposed upon an arch site (182a) of the sole covering part; and a second shock absorbing mechanism part (300) which is disposed upon the heel covering part. The first shock absorbing mechanism part is formed such that the thickness thereof is greater than the thickness of the second shock absorbing mechanism part and is configured to be possible to absorb large shocks. The main body is configured so that when the main body is worn on the foot, the vicinity of the foot where the toes are attached is exposed, not covered by the sole covering part.

Description

Foot supporter

The present invention relates to a foot supporter having an impact absorption function, and more particularly to a foot supporter having an impact absorption function useful for kendo or the like that momentarily receives a strong impact force on the sole.

In a kendo competition, when a sword hits the opponent with a bamboo sword, for example, one foot (usually the right foot) is strongly stepped forward to strike a hand, face or torso or thrust. It is generally said that the time from stepping on to hitting is about 0.1 to 0.2 seconds. Within this momentary time, a load of about 14 to 15 times the weight is applied to the foot. It is said. For this reason, not only the load from the sole part to the heel part, but also the load on the knee is large, and the sole, knee, and Achilles tendon are often damaged.
Especially for athletes who have hurt their knees or Achilles tendon in the past, such a heavy load is physically and mentally painful at the time of competition and training, and adversely affects the competition. Is. For example, there is a possibility that an appropriate impact cannot be made because a drastic stepping-in cannot be performed, or a continuous smooth operation may be hindered. In addition, because of the excessive stepping, there is a possibility that the damaged part is further deteriorated and other parts are also damaged. Furthermore, there is a risk that it will be difficult or lacking to maintain concentration.
In addition, although it was conventionally thought that the load at the time of depressing was received mainly on the heel part, it has recently been found that the load is received from the arch part of the sole toward the heel part.

Conventionally, a tabi for kendo has been provided, but this only has a function of protecting the skin of the sole and the heel. An ankle support is also provided for the purpose of fixing the ankle and keeping warm.

Japanese Utility Model Publication No. 58-166371 (Patent Document 1 below) discloses a kendo supporter in which a cushion is provided in the heel portion. This patent document 1 is intended to reduce the load on the heel of a stepping foot that occurs when the stepping on.

Japanese Utility Model Laid-Open No. 61-2285 (Patent Document 2) discloses a kendo kite protector in which a cup-shaped shock absorber is provided on the kite. This Patent Document 2, like Patent Document 1, is intended to reduce the load on the foot of the foot that occurs when the foot is depressed.

Japanese Patent Application Laid-Open No. 3-279401 (Patent Document 3 below) discloses shock absorbing socks in which a cushion material is provided on a sock or supporter's heel or arch. This Patent Document 3 aims at an impact absorption effect and a fatigue reduction effect by using a function in place of an insole of a shoe.

Japanese Patent Application Laid-Open No. 7-583 (Patent Document 4 below) discloses a technique relating to a method of attaching a cushion material to a heel portion. This Patent Document 4 is intended to facilitate installation work and improve work efficiency.

Japanese Patent Application Laid-Open No. 11-206946 (Patent Document 5) discloses a foot supporter that provides a cushioning effect to the heel portion and the arch portion by attaching a cushion material to portions located on the heel portion and the arch portion of the sole. Is disclosed. This patent document 5 is intended to reduce fatigue of the buttocks and arch.

Japanese Unexamined Patent Application Publication No. 2010-131067 (Patent Document 6 below) discloses an ankle supporter attached to an ankle joint. This Patent Document 6 intends to appropriately protect and fix the ligament of the ankle joint.

The following Non-Patent Document 1 discloses “Solvo Arch Wedge Heel Supporter Thin” (manufactured by Sanshin Kosan Co., Ltd.) for the purpose of correcting the foot. This non-patent document 1 is a supporter for relieving foot, knee or lower back pain caused by the flat foot O leg. Its usage is to use it for bare feet, wear socks from above, and fit the pad to the arch and heel parts so that they do not slip or hit. Thus, by supporting the arch, flat feet are reduced, the function of the toes is increased and fatigue is prevented, and overpronation is prevented. In addition, the wedge heel pad is intended to correct the legs and prevent the shoe from being reduced, to reduce the strain on the knees, and to approach a well-balanced posture.

Japanese Utility Model Publication No. 58-166371 Japanese Utility Model Publication No. 61-2285 JP-A-3-279401 Japanese Patent Laid-Open No. 7-583 Japanese Patent Laid-Open No. 11-206946 JP 2010-131067 A

Patent document 1 and patent document 2 are specialized in protection of a heel part. Patent document 3 is only a substitute for an insole for the purpose of shock absorption effect and fatigue reduction effect, and is intended for normal shoes and shoes, and a suddenly large load such as kendo is applied. It is not intended to join. Patent Document 4 merely discloses a technique relating to how to attach the cushion material to the heel portion. Patent Document 5 is a foot supporter for providing a cushioning effect to reduce fatigue of the buttocks and arch, and is not intended to absorb shock. Patent document 6 makes it possible to appropriately protect and fix the ligaments of the ankle joint.
Thus, these Patent Documents 1 to 6 do not disclose any technical idea for simultaneously protecting the arch part and the heel part of the sole against a large impact force generated instantaneously. It has not been suggested.

Non-patent document 1 is intended to relieve foot, knee or lower back pain caused by flat feet and legs in daily life. Is not supposed to be added instantaneously.

The present invention has been made in consideration of the above circumstances, and eliminates the above-described problems, reduces the impact on the sole and heel part due to a large load applied when depressing, and hinders the operation of the wearer. The purpose of the present invention is to provide a foot supporter that eliminates adverse effects on competition and training.
It is another object of the present invention to provide a foot supporter that prevents injuries and the like and improves safety by reducing an impact on a sole and a heel part due to a large load.

The present invention is characterized by having the following configuration in order to achieve the above object.

(1) It is composed of a heel covering part located at the heel part, a heel covering part located at the heel part, a sole covering part located at the instep part, and a sole covering part located at the sole part when mounted. A detachably mounted main body made of a material having a first shock absorbing mechanism provided on the arch portion of the sole covering portion of the main body, and a second shock provided on the heel covering portion of the main body. The first shock absorbing mechanism portion is formed so that the thickness thereof is larger than the thickness of the second shock absorbing mechanism portion, and configured to absorb a large impact force. The main body is configured such that when the main body is mounted on a foot, the vicinity of the base portion of the toe of the foot is not covered with the sole covering portion and is exposed.

(2) In the configuration of (1) above, the base portion side of the toe of the main body is configured to have a thickness of at least 3 mm.

(3) In the configuration of (1) or (2) above, the base part of the toe of the main body is configured to require a pulling force of at least 900 g to lift up.

(4) a sole covering portion in which a first shock absorbing mechanism portion is provided on the arch portion so as to be in an exposed state without being covered in the vicinity of the base portion of the toe when worn; A heel covering portion provided with a second shock absorbing mechanism portion located at the heel portion at the time of mounting, and the thickness of the first shock absorbing mechanism portion is that of the second shock absorbing mechanism portion. It is characterized by being formed so as to be larger than the thickness and capable of absorbing a large impact force.

(5) In the configuration of (1), (2), (3) or (4), the first shock absorbing mechanism and the second shock absorbing mechanism are made of the same material. It is characterized by that.

(6) In the configuration of (1), (2), (3) or (4), the first shock absorbing mechanism and the second shock absorbing mechanism are made of different materials. It is characterized by that.

According to the above-described configuration, the first shock absorbing mechanism portion and the second shock absorbing mechanism portion absorb a large shock that occurs instantaneously when the foot is depressed, and the load on the sole and the heel portion can be reduced. As a result, adverse effects on competition and training can be eliminated, injury and the like can be prevented, and safety can be improved.
In addition, since the first shock absorbing mechanism portion is thicker and larger than the second shock absorbing mechanism portion, the floor surface or the like always comes to the foot in the order of the arch part to the heel, As described above, it is possible to eliminate a large load applied around the ridge. Furthermore, since the base of the toes is configured to be exposed without being covered, the wearer can obtain appropriate friction without slipping on the floor surface during competition or training, It is practical without hindering operation.
In addition, the base part of the toes of the main body is configured to require at least 900g of pulling force to lift up, so even if it is a strong step, it will not be lifted up easily and will be displaced. Therefore, it is useful without adversely affecting the competition.

According to the present invention, it is possible to absorb a large load that occurs instantaneously when depressing, so that the impact on the sole and the heel part can be reduced, and adverse effects on competition and training can be eliminated. In addition, since the first shock absorbing mechanism part is thicker and larger than the second shock absorbing mechanism part, the foot will always reach the floor surface, etc. It is possible to eliminate the application of a large load at the center.
In addition, according to the present invention, since the impact on the sole and the heel part due to a large load can be reduced, there is an excellent practical effect that it is possible to prevent injury and improve safety. In addition, according to the present invention, the vicinity of the base of the toes is configured to be exposed without being covered, so that the wearer does not slip during competition or training, and the operation is hindered. Without fail, it is possible to realize a reliable operation as expected, which is practical and useful.

1 is a side view of a kendo foot supporter according to an embodiment of the present invention. FIG. 4 is a plan view schematically showing a state where the shock absorber is provided inside the main body according to the embodiment. FIG. 4 is a side view schematically showing a state where the shock absorber is provided inside the main body according to the embodiment. FIG. 4 is a side view of the kendo foot supporter according to the same embodiment and attached to the right foot. It is a figure which shows typically the site | part which a 1st and 2nd impact-absorbing material each supports in the same embodiment in the name of a right foot sole site | part, and a right foot sole site | part. It is a figure which shows the outline | summary of the supporter which is a to-be-measured object, a measuring instrument, and a measuring method in connection with the embodiment. It is a figure which concerns on the same embodiment and shows the flow of the procedure of the measurement regarding the mounting degree of a supporter. FIG. 4 is a diagram showing a list of measurement results according to the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The foot support according to the present embodiment (also referred to as a sole supporter) is for a kendo that is detachably mounted from the vicinity of the ankle to the base of the toe (in the vicinity of the boundary between the stepping portion F2 and the stepping portion F3 in FIG. 5). It is a foot supporter. The kendo foot supporter includes a main body 100, a first shock absorbing member 200 as a first shock absorbing mechanism provided inside the main body 100, and a second shock absorbing member as a second shock absorbing mechanism. The material 300 is comprised.

The main body 100 is made of a stretchable and durable material (for example, elastic fiber knitted fabric), and has a hollow inside and a foot (usually assuming a right foot that is a stepping foot of the wearer) in the hollow portion. It is composed of a heel cover 120, a heel cover 140, a foot cover 160 and a foot cover 180. In addition, when the body 100 is attached to the foot, the tightening degree is stronger than a general ankle supporter or a sole supporter so that the body 100 will not be swung up even if subjected to intense movement or a strong impact. It is configured. In addition, the base part side of the toe of the main body 100 is configured to have a thickness of at least 3 mm.

The heel covering portion 120 is formed so as to closely cover the heel portion of the foot when the main body 100 is detachably attached to the foot. Further, a flap-type woven surface fastener 122 is provided on the rear side 120a (right side in FIG. 1) of the heel cover 120, and one end 122a of the woven surface fastener 122 is placed on the surface of the heel cover 120. It is configured to be detachable.

The heel covering portion 140 is formed so as to closely cover the heel portion of the foot when the main body 100 is detachably attached to the foot. A second impact absorbing material 300 made of EVA (Ethylene-Vinyl Acetate), which is one of thermoplastic synthetic resins, is provided on the upper surface side (inside the main body 100) of the heel cover 140. Provided.

When the main body 100 is detachably mounted on the foot, the foot-back covering portion 160 is formed so as to closely cover a foot-back portion, a so-called instep.

The sole cover portion 180 is formed so as to closely cover the sole portion when the main body 100 is detachably attached to the foot. As with the second shock absorber 300, a first shock absorber made of EVA is provided at a portion (an arch portion) 182 corresponding to the foot arch on the upper surface side (inside of the main body 100) of the sole covering portion 180. 200 is provided.

The second shock-absorbing material 300 has a crescent-shaped upper surface, and when the main body 100 is detachably mounted on the foot, it closely adheres so as to wrap the heel, and its thickness T2 is about 10 mm. In addition, the second shock absorber 300 is fixed with its lower surface portion 300a positioned on the upper surface portion 140a side of the collar covering portion 140, and the other outer surface portion is crimped and fixed by a stretchable material. It is what. In the present embodiment, the shape of the second shock absorber 300 is a crescent shape, but the shape is not limited to this. Of course, the shape may be various other shapes such as a half-moon shape or an oval shape.

When the main body 100 is detachably attached to the foot, the first shock absorber 200 is fixedly positioned on the upper surface portion 182a side of the portion corresponding to the foot arch (arch portion) 182 and other outer surface portions. Is fixed by being crimped by a stretchable material. Thus, the first shock absorber 200 is formed to have a larger surface area than the second shock absorber 300, and the thickness T1 of the first shock absorber 200 is the second shock absorber 200. The thickness of the material 300 is approximately 1.1 mm to 1.2 times approximately 12 mm. Further, the volume V1 of the first shock absorber 200 is formed to be larger than the volume V2 of the second shock absorber 300. This is due to the fact that the first shock absorber 200 is subjected to a larger load load than the second shock absorber 300.
The thicknesses T1 and T2 of the

respective shock absorbers

200 and 300 are not limited to the above values, but T2 = 5.8 mm when T1 = 7 mm, and T2 = 4.5 mm when T1 = 5 mm. Thus, it is sufficient if the relationship of T1> T2 is satisfied with respect to the thickness.

The operation of the above configuration will be described below.

Stepping into the inside of the main body 100, with the heel cover 120 in the heel, the heel cover 140 in the heel, the sole cover 160 in the back, and the sole cover 180 in close contact with the sole, When one end portion 122a of the flap type woven surface fastener 122 is pulled and attached to the surface of the heel covering portion 120, a kendo foot supporter is attached. Thus, the first shock absorber 200 is located in the step part (middle foot part, so-called arch part) F3, and the second shock absorber 300 is located in the buttocks part (rear foot part) F4. (See FIG. 5). Further, the toes (toes) F1 and the stepping part (forefoot part) F2 are exposed without being covered by the main body 100 (see FIGS. 4 and 5).

When the wearer vigorously depresses the foot to which the kendo foot supporter is attached for the hitting, the toes F1 and the stepping portion F2 which are in an exposed state without being covered with the main body 100 are caused by friction with the floor surface or the like. , You can step firmly without slipping. Then, the stepping foot reaches the floor surface from the arch portion F3 to the buttocks F4.

As for the load applied to the stepping foot, first, a large load is applied to the first shock absorber 200 provided in the arch portion 182, and then a load is applied to the second shock absorber 300 provided in the heel cover 140. become. That is, a large load load is absorbed by the first shock absorber 200, and a load load is further absorbed by the second shock absorber 300. This significantly reduces the load applied to the wearer of the kendo foot supporter.

Now, with respect to the supporter according to the present embodiment and the supporter that has been commercially available, a measurement experiment relating to the comparison of the strength of adhesion to the foot when the supporter is mounted has been performed, and will be described in detail below.

As a reference for the strength of adhesion, as shown in FIG. 6 (a), a load is applied to the end (toe side) of the supporter 400 which is the object to be measured, and the load when the end is rolled up is measured. This measures the strength of adhesion to the foot.
In this experiment, as shown in FIG. 6B, the supporter according to the present embodiment is a nylon, silk, ester and neoprene rubber blend except for the first shock absorber 200 and the second shock absorber 300. It is made of the above material and has a thickness of about 3 mm. Further, the supporter of Comparative Example 1 is made of polypropylene, ethylene vinyl alcohol and polyester composite fiber and polyurethane material, excluding the impact absorbing material or cushion material, and has a thickness of about 3 mm. Furthermore, the supporter of Comparative Example 2 is made of polypropylene, a composite fiber of ethylene vinyl alcohol and polyester, and a polyurethane material, excluding the shock absorbing material or the cushion material, and has a thickness of about 3 mm. Each supporter is configured to cover the heel region (F2, F3, F4, F5) from the toe root region when mounted on the foot.
The spring balance used in this experiment has a maximum measurable load of 1,000 g and can be measured in units of 1 g.

As an experimental procedure, first, one end of the clip 500 is attached to the tip of the spring balance 700 via, for example, a string 600 (see step S710 in FIG. 7). Next, the supporter 400 is attached to the foot or, for example, a prosthetic leg (step S720), and the other end of the clip 400 is attached to the end on the toe side of the supporter 400 (step S730). In this state, the spring balance is slowly moved so as to be pulled up in a substantially vertical direction (step S740, direction of arrow U in FIG. 6A). Thus, the load when the end of the supporter 400 is rolled up by, for example, 2 cm (Y in step S750) is read (step S760). This measurement is performed seven times for each supporter, and an average value is calculated. Thereby, the degree of adhesion strength when the supporter is mounted can be understood.

Measured results and average values are as shown in FIG. That is, the supporter according to the present embodiment requires a pulling force of at least 900 g in order to roll up.

In addition, it can be seen that the supporter according to the present embodiment has a strength that is approximately 2.3 to 3.2 times that of a conventional supporter in terms of the average value of the pulling force. Because of this strength, even if the supporter wears his / her foot for striking, the main body 100 does not easily roll up or shift.

According to the above embodiment, the first shock absorbing material 200 provided in the arch portion 182 larger than the second shock absorbing material 300 and the second shock absorbing material 300 provided in the heel covering portion 140 are used to step on the foot. Therefore, the load on the sole and the heel part can be remarkably reduced. As a result, it is possible to eliminate the adverse effects caused by a large impact force as in the past, and to concentrate on competition and practice. In addition, it is possible to prevent injury and improve safety.
In addition, since the first shock absorbing material 200 is thicker and larger than the second shock absorbing material 300, the floor surface or the like always comes to the foot in the order of the arch part to the heel. As described above, it is possible to eliminate a large load applied around the ridge. In addition, when the kendo foot supporter is mounted, the footpad F1 and the stepping portion F2 are configured so that the body 100 is exposed without being covered with the body 100, so that moderate friction with the floor surface can be obtained. Without slipping, you can step firmly and do not interfere with competition or practice.
Further, the base part of the toe of the main body 100 is configured to require at least 900 g of pulling force to lift up, so even if it is strongly stepped on, it will not be lifted up easily and will shift. Therefore, it is useful without adversely affecting the competition.

The present invention is not limited to the above embodiment, and the material of the shock absorbing material may be, for example, polyurethane shock absorbing cushioning material “Sorbo” (Japanese registered trademark of Sanshin Kosan Co., Ltd.), foamed gel or gel chip. Anything can be used as long as it can absorb a load caused by a large impact, is durable and can be designed compactly. Also, the shape, size, and thickness of the shock absorber are not limited, so that the first shock absorber is subjected to a large load and subsequently the second shock absorber is loaded. It only needs to be configured. Furthermore, the material of the first shock absorber and the second shock absorber need not be the same. For example, EVA is used for the first shock absorber and polyurethane shock is used for the second shock absorber. Different materials may be used, such as using an absorption buffer material. Further, the main body may be any material having stretchability and durability, and of course, various deformations are possible.
Furthermore, as long as the first shock absorber is thicker than the second shock absorber, the first shock absorber and the second shock absorber may be integrally formed. It is. Of course, the second shock absorber may be formed in a cup shape so as to wrap the bag.
The present invention can be variously modified without departing from the gist thereof.

The foot supporter according to the present invention can be used not only for kendo, but also for martial arts, exercises, and operations in which a large load is instantaneously applied to the sole and the heel part.

DESCRIPTION OF SYMBOLS 100 ... Main body 140 ... Saddle coating | coated part 180 ... Foot coating | cover part 182a ... arch part 200 ... 1st shock absorber (1st shock absorption mechanism part)
300 ... Second shock absorber (second shock absorbing mechanism)

Claims

A stretchable material composed of a heel covering part located at the heel part, a heel covering part located at the heel part, a sole covering part located at the instep part, and a sole covering part located at the sole part when worn. A detachably mounted main body comprising:
A first shock absorbing mechanism provided on the arch portion of the sole covering portion of the main body;
A second shock absorbing mechanism provided on the heel cover of the main body,
The first shock absorbing mechanism portion is formed so that its thickness is larger than that of the second shock absorbing mechanism portion, and configured to absorb a large shock force,
The foot supporter according to claim 1, wherein when the body is mounted on a foot, the body is configured so that a portion near the base of the toe of the foot is not covered with the sole cover portion and is exposed.
The foot supporter according to claim 1, wherein the base part of the toe of the main body has a thickness of at least 3 mm.
The foot supporter according to claim 1 or 2, wherein the base part of the toe of the main body requires a pulling force of at least 900 g to lift up.
At the time of wearing, the sole covering portion in which the first shock absorbing mechanism portion is provided in the arch portion and located in the sole portion so that the vicinity of the base portion of the toe is not covered and is exposed.
At the time of wearing, comprising a heel covering portion provided with a second shock absorbing mechanism portion located at the heel portion,
The foot supporter according to claim 1, wherein the first shock absorbing mechanism is formed to have a thickness larger than that of the second shock absorbing mechanism, and can absorb a large shock force.