Racing car shoes

Abstract

The invention relates to a pair of racing shoes, and aims to provide a pair of racing shoes worn by a driver in an automobile match, so that the driver is not easy to slip and fatigue when stepping on a pedal, and the reactivity of pedal operation is also improved. The racing shoe is provided with an inner sole tightly attached to the foot sole of the driver, an upper which is connected with the inner sole and covers the foot of the driver from the upper portion, and an outer sole which is connected with the lower portion of the inner sole and makes contact with a pedal of the automobile, and the outer sole is provided with a first protruding strip and a second protruding strip, a second ridge provided closer to the sole arch cover side than the first ridge; the third protruding strip is arranged under the cubic bone of the foot of the driver; and a pedal contact band portion formed in the short-side direction of the outsole from the root of the driver's toe to directly below the hallux adductor transverse head.

Description

Technical Field

[0001] The present invention relates to a racing shoe, in particular to a racing shoe worn by drivers in automobile competitions. Background Art

[0002] In recent years, technology related to shoes worn while driving a vehicle has been developed, which take into account fatigue resistance and good response to pedal operation.

[0003] For example, Patent Document 1 discloses a running shoe that enables smooth and quick walking and running movements by including a sole that can appropriately control the movement of the foot pressure center with a simple structure.

[0004] The shoe disclosed in Patent Document 1 has a sole body constituting the bottom of the shoe and a foot pressure guide portion, which is arranged on the sole body and guides the pressure center applied to the sole moving with walking or running, that is, the foot pressure center, along a designated foot pressure center path from the heel toward the vicinity of the root of the fourth toe. Due to this structure, the wearer of the shoe with the sole can guide the foot pressure center moving with walking or running from the heel to the vicinity of the root of the fourth toe without being affected by habits, etc., and naturally use the hip joint to make the thigh internally rotated, and avoid unnecessary muscle tension, and reflexively extend the lower limbs and the sole of the foot forward, so that the best walking and running movements can be easily achieved by wearing the shoe. Therefore, not only can the burden on the bones and muscles of the waist and legs be reduced, but also, it is not affected by the habits of walking and running movements, and the wearer can stably perform smooth and rapid walking and running movements.

[0005] In the sole disclosed in patent document 1, the outer sole is composed of only one layer of flat sheet material, and the surface of the sheet material is smooth. Generally speaking, the action of a person stepping on and leaving the pedal of a vehicle is to move the center of gravity by landing from the heel to the toe and leaving the ground from the toe to the heel. At this time, it is known that the pressure center applied to the sole of the foot, that is, the foot pressure center, is also transferred from the heel to the toe, especially from the ball of the big toe. The trajectory of this foot pressure center is an important factor that represents the adaptability of the action of stepping on and leaving the pedal. The pedal of the car used in the car race is not covered with rubber like the pedal of an ordinary car, but the metal is exposed, and there are multiple openings on the surface of the pedal, which is a structure that is easy to slip. Therefore, in the outer sole disclosed in the above patent document 1, because the surface of the sheet material is smooth and easy to slip, and because it is a flat layer of sheet material, when the pedal is repeatedly stepped on in the car race, there is a problem of severe consumption of the plantar muscle and poor response to the operation of the pedal.

[0006] Patent Document 1: International Publication No. 2007 / 086251 Summary of the invention

[0007] Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a racing shoe used in a car race, which can make the driver less likely to slip and fatigue when stepping on the pedal, and also improve the responsiveness of the pedal operation.

[0008] In order to solve the above-mentioned problems, a racing shoe according to one embodiment of the present invention is a racing shoe worn by a driver in a car race, and comprises: an inner sole that is in close contact with the sole of the driver's foot; an upper that is joined to the inner sole and covers the driver's foot from the upper part; an outer sole that is joined to the lower part of the inner sole and contacts the pedal of the car; the outer sole comprises: a first protrusion that extends from the driver's heel to the base of the driver's toes and is directly below the plantar fascia; a second protrusion that is provided on the plantar arch cover side closer to the first protrusion; a third protrusion that is provided directly below the cuboid bone of the driver's foot; and a pedal contact band that is formed along the short side direction of the outer sole from the base of the driver's toes to directly below the transverse head of the adductor hallucis muscle.

[0009] In the above-mentioned racing shoes, the upper and the outer sole may be made of flame-retardant materials.

[0010] In the above-mentioned racing shoes, the outer sole can be formed of any one of nitrile rubber, butadiene rubber, chloroprene rubber or a mixture thereof, and contains at least vanadium, calcium carbonate and calcium sulfate as flame retardants.

[0011] In the above-mentioned racing shoes, the upper may be made of flame-retardant fiber.

[0012] In the above racing shoe, the pedal contact belt portion may have a plurality of grooves at equal intervals.

[0013] In the above-mentioned racing shoe, the first protrusion may extend along a portion just below the plantar fascia from the heel of the driver's foot to the base of the fourth toe of the driver's foot.

[0014] In the above-mentioned racing shoe, the tops of the first protrusion, the second protrusion and the third protrusion may also be flat, and the heights of the first protrusion, the second protrusion and the third protrusion are the same.

[0015] In the above-mentioned racing shoe, the first narrow width portion may be provided at the end of the first protrusion.

[0016] In the above racing shoe, the third protrusion may have a third narrow width portion at an end portion thereof.

[0017] In the above-mentioned racing shoe, the first protrusion and the third protrusion may be provided on the upper side of the pedal contact belt portion.

[0018] In the above-mentioned racing shoes, a midsole may be sandwiched between the inner sole and the outer sole.

[0019] In the above-mentioned racing shoe, the shoe upper may have a heel guard for protecting the heel portion of the driver's foot.

[0020] The racing shoe of the present invention comprises an inner sole that is in close contact with the sole of the driver's foot, a shoe upper that is joined to the inner sole and covers the driver's foot from the upper part, and an outer sole that is joined to the lower part of the inner sole and contacts the pedal of the car; the outer sole comprises a first protrusion extending from the driver's heel to the base of the driver's toes directly below the plantar fascia, a second protrusion provided on the side closer to the plantar arch cover than the first protrusion, a third protrusion provided directly below the cubic bone of the driver's foot, and a pedal contact belt portion formed along the short side direction of the outer sole from the base of the driver's toes to directly below the transverse head of the adductor hallucis muscle. Therefore, the racing shoe used in the car race is not easy to slip or fatigue when the user steps on the pedal, and the responsiveness of the pedal operation can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram showing the action of a racing shoe according to an embodiment of the present invention when a pedal is depressed. Figure 2 It is an exploded perspective view showing a racing shoe according to an embodiment of the present invention. Figure 3 It is a diagram showing the entire racing shoe according to the embodiment of the present invention. Figure 4 It is a diagram showing a shoe tongue in a racing shoe according to an embodiment of the present invention. Figure 5 It is a diagram showing a heel guard in a racing shoe according to an embodiment of the present invention. Figure 6 It is a figure which shows the hook and loop fastener and the label in the racing shoe which concerns on embodiment of this invention. Figure 7 It is another diagram showing the hook and loop fastener and the label in the racing shoe according to the embodiment of the present invention. Figure 8 is a bottom view of a racing shoe according to an embodiment of the present invention. Fig. 9 is a front view of a racing shoe according to an embodiment of the present invention. Fig.10 2 is a left side view of a racing shoe according to an embodiment of the present invention. Fig.11 yes Figure 8 An enlarged cross-sectional view of the cut portion at line AA. Fig.12 yes Figure 8 Cross-sectional view of the cut portion at line BB. Fig.13 It is a bottom view schematically showing a racing shoe according to an embodiment of the present invention. Fig.14 yes Fig.13 A cross-sectional view of the portion cut off at line VV. Description of Reference Numerals 1 racing shoe; 2 upper; 3 tongue; 4 outer sole; 5 midsole; 6 inner sole; 7 heel protection part; 8 hook and loop fastener; 10 pedal; 41 sole body; 42 heel protrusion; 43 first protrusion; 44 second protrusion; 45 third protrusion; 46 first narrow width part; 47 second narrow width part; 48 central part; 49 third narrow width part; 50 pedal contact belt part; 51 toe side; 52 heel side; 53 front end part; 81 first hook and loop fastener; 82 second hook and loop fastener; 91 care label; 92 hologram label. DETAILED DESCRIPTION

[0022] The racing shoes of this embodiment are used as shoes for various vehicles such as car races. When the wearer of the racing shoes operates the accelerator pedal, brake pedal, clutch pedal, etc. of the driver's seat of the vehicle by stepping on these pedals, the friction between the sole and the metal exposed on the surface of the pedal is increased to prevent slipping. In addition, fatigue caused by repeatedly stepping on and off the pedals during long-term car races is reduced.

[0023] by Figure 1 First, the racing shoe 1 of this embodiment will be described with reference to the drawings. Figure 1 As can be understood from the side view of the schematic diagram, the shoe bottom is placed on various pedals protruding from the floor of the driver's seat of the vehicle, such as the accelerator pedal, brake pedal, clutch pedal, etc., and the racing shoe 1 is pressed by the user's foot, thereby depressing the pedal 10 with the pressure.

[0024] The racing shoe 1 of this embodiment has a lining structure and is entirely covered with NOMEX (registered trademark) manufactured by DuPont. NOMEX is formed of 0.38 mm meta-aramid fiber. A heel counter manufactured by MILAX is attached to the heel portion.

[0025] Regarding the racing shoe 1 of this embodiment, Figure 2 As can be understood from the exploded perspective view, the racing shoe 1 includes an upper 2, an insole 6, a midsole 5, and an outsole 4 stacked in order from top to bottom. In the illustrated embodiment, the upper 2 is adhered to the racing shoe 1. A heel protection portion 7 is installed behind and at the bottom of the upper 2. In addition, the insole 6 is installed as an inner pad of the racing shoe 1, and the outsole 4 is installed on the outer surface of the bottom of the racing shoe 1. In addition, between the insole 6 and the outsole 4, the midsole 5 is installed in a manner covering the rear half of the racing shoe 1. In addition, instead of the outsole 4, a sticky material such as a non-slip material may be adhered to the bottom plate of the racing shoe 1.

[0026] Figure 31 is a diagram showing a state of use in which the driver actually puts his foot into the racing shoe 1 after assembling the components of the racing shoe 1. The hook and loop fastener 8 is provided in a manner that crosses the center from the top in the left and right directions. The hook and loop fastener 8 includes a first hook and loop fastener 81 and a second hook and loop fastener 82. By using the first hook and loop fastener 81 and the second hook and loop fastener 82 to constrain the shoe upper 2, the driver's foot is prevented from being separated from the racing shoe 1. The close contact (adhesion) between the driver's foot and the racing shoe 1 is improved, and since the racing shoe 1 moves in accordance with the movement of the foot, the pedal operation can be performed without wasting the movement of the foot.

[0027] In addition, the upper part of the racing shoe 1 is provided with a tongue 3. The tongue 3 is arranged inside the upper 2 and plays a role in protecting the driver's instep when the driver's foot is restrained by the hook and loop fastener 8. As the material of the tongue 3, a leather (cowhide) for stable driving can be used.

[0028] Figure 4 This is a diagram showing the racing shoe 1 with the shoe tongue 3 attached. Figure 4 (a) is a diagram showing a state where the hook and loop fastener 8 is attached and the cover is attached. Figure 4 (b) is a diagram showing a state where the cover is removed, the shoe tongue 3 is pulled up, and the inside of the racing shoe 1 is viewed. Figure 4 (c) is a diagram showing a state where a label is attached to the upper surface of the tongue 3. By providing the tongue 3, the opening of the racing shoe 1 is easily expanded, and the foot is easily inserted into the racing shoe 1. In addition, after the foot is inserted, the foot (ankle) is fixed by the above-mentioned hook and loop fastener 8, so that the racing shoe 1 is not easily displaced after being put on.

[0029] Figure 5 1 is a diagram showing the shape of the heel protection part 7. The heel protection part 7 is a hinge structure, and becomes a structure in which the open right side and left side clamp the heel. By having such a structure, the heel can be protected from the left and right shaking in the car race.

[0030] Figure 6 81 and 82. Figure 6 As shown in (a), the first hook and loop fastener 81 and the second hook and loop fastener 82 are closed from above the tongue 3 and the upper 2, thereby preventing the driver's foot from being separated from the racing shoe 1. A care label 91 is attached to the inner side of the first hook and loop fastener 81 near the upper side of the driver's foot, and a hologram label 92 is attached to the inner side of the second hook and loop fastener 82 near the lower side of the driver's foot.

[0031] like Figure 6 As shown in (b), the size of the care label 91 is preferably, for example, 21 mm in height and 35 mm in width. Figure 6 As shown in (c), the size of the hologram label 92 is preferably, for example, 21 mm in height and 30 mm in width.

[0032] Figure 7 The figure shows the hook and loop fastener 8 and the label attached to the tongue 3 . Figure 7 (a) is a diagram showing a care label 91 attached to the back side of the first hook and loop fastener 81. Figure 7 (b) is a diagram showing a hologram label 92 attached to the back side of the second hook and loop fastener 82. By attaching these labels, the driver can be identified even in the event of an accident.

[0033] The upper 2 and the outer sole 4 are made of flame retardant materials. Specifically, the upper 2 is made of flame retardant fibers such as meta-aramid fibers, acrylic fibers, and polyester fibers. In car races, heat and fire are sometimes generated in accidents. Since the driver must be protected from the heat and fire, it is preferably made of flame retardant fibers. As an example, Rustan (registered trademark) manufactured by Asahi Kasei ADVANCE CORPORATION can be cited. Rustan is made of oxidized acrylic material with excellent heat resistance, and has electrical insulation, excellent chemical resistance, and excellent flame retardancy.

[0034] The insole 6 is in close contact with the sole of the rider's foot. The insole 6 is in close contact with the sole of the rider's foot, thereby alleviating the reaction force applied to the sole when the pedal 10 is stepped on. As the insole 6, for example, fiber cloth is used.

[0035] The upper 2 is joined to the inner sole 6 and covers the driver's foot from above. That is, it wraps the driver's instep. The upper 2 covers the driver's foot from above, thereby preventing the driver's foot from coming off the racing shoe 1. The outer sole 4 is joined to the lower part of the inner sole 6 and contacts the pedal 10 of the car.

[0036] As the material of the upper 2, cowhide suede (Kip nubuck) is used in the central part of the instep. Nubuck is made by using sandpaper on the silver surface (outer surface) to raise the short protein fibers (napped finishing), so that it becomes velvety top-grade cowhide (leather), and has strong wear resistance, and the color is white or colored. A high strength and thickness and delicate silver surface can be obtained. The characteristics of suede are similar to aniline leather. It is soft to the touch, easy to scratch, and water drops will temporarily darken it (the color returns to its original state after drying). In addition, as the material of the upper 2, "S-Heron" (Japanese: "Sヘロン") is used on the left and right sides of the instep.

[0037] A midsole 5 is sandwiched between the inner sole 6 and the outer sole 4. The midsole 5 is formed of ethylene-vinyl acetate copolymer (EVA). EVA is an elastomeric polymer, has flexibility, is strong at low temperatures, has stress crack resistance, and is suitable for use as a component of the racing shoe 1. By having the midsole 5, the heel is surrounded and can be protected from impact during car racing.

[0038] The outer sole 4 is formed of any one of nitrile rubber, butadiene rubber, chloroprene rubber or a mixture thereof, and contains at least vanadium, calcium carbonate and calcium sulfate as a flame retardant.

[0039] like Figure 8 As shown, the outer sole 4 has a first protrusion 43, a second protrusion 44, a third protrusion 45, and a pedal contact band 50. The first protrusion 43 extends from the driver's heel to the base of the driver's toes directly below the plantar fascia. The second protrusion 44 is a beam arranged closer to the plantar arch cover than the first protrusion 43, that is, arranged on the arch part. The third protrusion 45 is a beam arranged directly below the cubic bone of the driver's foot, that is, arranged on the outside of the foot. The pedal contact band 50 is formed along the short side direction of the outer sole 4 from the base of the driver's toes to directly below the transverse head of the adductor hallucis. The first protrusion 43 can stabilize the movement of the center of gravity and reduce or eliminate the stress on the joint. The second protrusion 44 can return the foot pressure center to the first protrusion 43 at the beginning of the movement of the foot pressure center, especially when the heel protrusion 42 deviates from the first protrusion 43 to the left and right. The third protrusion 45 can easily maintain the posture of the foot from the little toe (fifth toe) side of the foot without being easily fatigued.

[0040] The first protrusion 43 is the longest protrusion among the three protrusions, and extends from the heel of the driver to the base of the driver's toes directly below the plantar fascia. The first protrusion 43 has a first narrow portion 46 and a second narrow portion 47. That is, the width of the first narrow portion 46 at the base of the toes and the second narrow portion 47 at the heel are formed narrower than the width of the central portion 48. This is because the exposure amount of the pedal abutment belt portion 50 needs to be increased at the base of the toes (first narrow portion 46) to increase friction. In addition, because the amount of the first protrusion 43 is reduced at the heel portion (second narrow portion 47), it is easy to bend. In addition, the first protrusion 43 extends from the heel of the driver's toes to the base of the fourth toe of the driver's foot directly below the plantar fascia.

[0041] The third narrow width portion 49 is provided at the end of the third protrusion 45. The third narrow width portion 49 is located on the fifth toe (little toe) side of the foot and does not hinder the movement of the toe.

[0042] The first protrusion 43 and the third protrusion 45 are provided at the upper part of the pedal contact belt 50. The first protrusion 43 and the third protrusion 45 extend to the outside of the pedal contact belt 50 (the side close to the pedal 10), and extend to the front end of the toe in a manner of passing through the pedal contact belt 50, that is, closer to the front than the pedal contact belt 50. At this time, the pedal contact belt 50 should not be hidden too much. This is to prevent the pedal contact belt 50 from being easily slipped due to excessive hiding.

[0043] Fig. 9 1 is a front view of the racing shoe 1. The portion where the sole body 41 is mounted and the portion where the pedal contact band 50 is mounted are formed as thick walls. That is, the rear portion near the base of the toes is formed as a thick wall. This portion is the portion where the driver applies the greatest force when stepping on the pedal 10, and the purpose is to reduce the consumption and fatigue of this portion.

[0044] Fig.10 This is a left side view of the racing shoe 1. The front ends of the first protrusion 43 and the third protrusion 45 can be seen. That is, the front ends of the first protrusion 43 and the third protrusion 45 reach the vicinity of the front ends of the driver's toes. The first protrusion 43 extends to the vicinity of the tip of the fourth toe of the driver's foot, and the third protrusion 45 extends to the vicinity of the tip of the fifth toe of the driver's foot.

[0045] Fig.11 Is Figure 8 Since the AA line is cut at the middle part of the foot, the cross section forms a shape in which the first protrusion 43, the second protrusion 44 and the third protrusion 45 are arranged.

[0046] like Fig.11 As shown, the tops of the first protrusion 43, the second protrusion 44 and the third protrusion 45 are all flat, and the heights of the first protrusion 43, the second protrusion 44 and the third protrusion 45 are all the same. Since the tops are all flat and have the same height, the bottom surface of the racing shoe 1 can be closely attached to the pedal 10 without any gap, so that the force of the driver's foot can act on the pedal 10 evenly.

[0047] Fig.12 and Figure 8The same, but the cross-sectional view of the cut-off portion cut by the BB line. If the cross-section of the cut-off portion cut by the BB line is observed, the toe side 51 and the heel side 52 are flat. In addition, in addition to being flat from the toe side 51 to the heel side 52, natural bending is also allowed. This means that the pedal contact belt portion 50 is flat. The pedal contact belt portion 50 is formed to cover the longest and thickest plantar muscle in the left and right direction of the foot including the ball of the big toe and the ball of the little toe from the base of the driver's toes. The pedal contact belt portion 50 is also formed to have the same width. In addition, the pedal contact belt portion 50 has a plurality of grooves at equal intervals. By providing the grooves, the hooking with the surface of the pedal 10 is increased when in contact with the pedal 10, friction is generated, and it is not easy to slip. In addition, the grooves are provided at equal intervals to make the friction of the pedal contact belt portion 50 uniform.

[0048] Fig.13 : is a schematic diagram of the bottom of the racing shoe 1 according to this embodiment. The plantar fascia of the driver's foot is indicated by a single-dot chain line. It can be seen that the first protrusion 43, the second protrusion 44 and the third protrusion 45 extend along the plantar fascia of the driver's foot.

[0049] Fig.13 , the parts indicated by F1 to F4 represent the heel portion F1, the arch portion F2, the ball portion F3 of the big toe, and the toe portion F4 of the outer sole 4. Here, in this specification, the heel portion F1 refers to a portion corresponding to the basal bone in the length direction, the arch portion F2 refers to a portion corresponding to the metatarsal bone in the length direction, the ball portion F3 of the big toe refers to a portion corresponding to the sesamoid bone at the front end portion of the first metatarsal bone in the length direction, and the toe portion F4 refers to a portion corresponding to the phalanges in the length direction.

[0050] The sole body 41 is formed to be gradually thinner from the heel side to the toe side when the midsole 5 is overlapped, and the toe portion F4 thereof is slightly raised. In addition, the lower surface of the sole body 41 is formed to be flat, and a heel protrusion 42 is provided on the heel portion F1 thereof.

[0051] The range where the heel protrusion 42 is provided is not particularly limited as long as it corresponds to the heel portion F1, and in the present embodiment, it is provided in the entire region including the central portion of the heel portion F1. By providing the heel protrusion 42 in the entire region including the central portion of the heel portion F1 of the sole body 41, the foot can be grounded in a relatively large range during driving, the foot pressure center can be smoothly guided to the central portion of the heel protrusion 42, and the foot pressure center can be easily guided to the first protrusion 43, so that the foot pressure center can be guided in a stable state.

[0052] In addition, the heel protrusion 42 of the present invention is not particularly limited in its setting position as long as it is within the range corresponding to the heel portion F1 and the arch portion F2. In addition to being set in the entire area of ​​the heel portion F1 as in the present embodiment, it can also be set, for example, including the heel portion F1 and its front end extending toward the arch portion F2.

[0053] The protrusion amount of the heel protrusion 42 relative to the sole body 41 is not particularly limited, and is preferably set appropriately within the range of 3 to 10 mm, more preferably 3 to 5 mm. That is, if the protrusion amount is too small, it is difficult to properly guide the foot pressure center to the first protrusion 43 while buffering the impact accompanied by the driving action during driving, but if the protrusion amount is too large, it is easy to destroy the balance, which may hinder the smooth driving action.

[0054] According to the representation Fig.13 The VV section of Fig.14 It can be understood that the first protrusion 43 is protrudingly provided on the lower surface of the sole body 41. The first protrusion 43 is composed of a protrusion that extends linearly and continuously from the central portion in the width direction of the heel protrusion 42 to the periphery of the root of the fourth toe T, and has a rectangular longitudinal section. Fig.13 As shown, the front end portion 53 of the first protrusion 43 is arranged slightly closer to the heel side than the portion corresponding to the root of the fourth toe T, so that Fig.13 As shown by the middle arrow P, the foot pressure center guided to the front end portion 53 is guided to the inner side of the ball of the big toe F3.

[0055] Here, the front end of the first protrusion 43 is located around the root of the fourth toe T in order to stabilize the center of gravity while reducing or eliminating the pressure on the joint. That is, if the front end of the first protrusion 43 is arranged closer to the outside than the root of the fourth toe T, for example, arranged closer to the outside than the fifth toe (little toe), the force of the body trying to tilt inward will play too much role in the early stage, causing the ankle joint and knee joint to be valgus, and exerting pressure on the joints of the toes, ankle joints, etc. represented by the valgus big toe. In addition, if the front end of the first protrusion 43 is arranged closer to the inside than the root of the fourth toe T, for example, arranged at the toe around the second toe, the force of the body trying to tilt outward will play a greater role, but the center of gravity swings left and right, etc. is unstable, and the stress opposite to the pressure on the above-mentioned joint acts on the joint. Therefore, it is necessary to make the front end of the first protrusion 43 located at the toe around the root of the fourth toe T to stabilize the center of gravity and reduce or eliminate the stress on the joint.

[0056] In particular, the above-mentioned effect can be significantly obtained by extending the portion of the first protrusion 43 corresponding to the ball of the big toe F3 and the toe F4 so as to overlap with the straight line connecting the center of the heel protrusion 42 and the base of the fourth toe T. In particular, as a racing shoe, the driver's foot fatigue can be reduced during a long-term endurance race.

[0057] The width of the first protrusion 43 is narrower than the width of the heel protrusion 42 and is formed constant over the entire length thereof, specifically, formed to be equal to the width of the fourth toe T. In addition, the first protrusion 43 is formed such that the protrusion amount from the sole body 41 is the same as the protrusion amount of the heel protrusion 42 at the base end side (heel side), and thus the lower surface thereof is formed continuously with respect to the lower surface of the heel protrusion 42. Furthermore, the protrusion amount of the first protrusion 43 is set to gradually decrease as it approaches the front end side, and in the present embodiment, is set to be about half of the protrusion amount of the central portion 48 at the front end 53 thereof.

[0058] The width and protrusion amount of the first protrusion 43 may be appropriately changed according to the specifications of the racing shoe, and the reduction rate when the first protrusion 43 gradually becomes smaller toward the front end may also be appropriately changed according to the application and the like.

[0059] Since the first protrusion 43 is formed to be narrower than the heel protrusion 42 and its lower surface is provided to be continuous with the heel protrusion 42, the foot pressure center located at the heel protrusion 42 is accurately guided by the first protrusion 43 and moves along the first protrusion 43. That is, the heel protrusion 42 and the first protrusion 43 constitute a preferred foot pressure center path, thereby making it possible to easily control the movement of the foot pressure center.

[0060] like Figure 8 and Fig.12 As shown in FIG. 1 , the second protrusion 44 and the third protrusion 45 are protrudingly provided on both sides of the central portion 48 of the first protrusion 43 and at both ends in the width direction of the lower surface of the sole body 41. The second protrusion 44 and the third protrusion 45 are protrusions provided in the early stage of the movement of the foot pressure center, especially in order to return the foot pressure center to the first protrusion 43 side when the foot pressure center deviates to the left or right from the first protrusion 43 when the foot pressure center moves from the heel protrusion 42 to the first protrusion 43. The protrusion amount is as shown in FIG. Figure 8 as well as Fig.12As shown, it is set to be slightly smaller than the first protrusion 43. The second protrusion 44 and the third protrusion 45 are also set so that the protrusion amount gradually decreases from the heel portion F1 side to the arch portion F2 side, and the reduction rate of the protrusion amount is set to be greater than the reduction rate of the first protrusion 43. Therefore, the difference in the protrusion amount between the second protrusion 44 and the third protrusion 45 and the first protrusion 43 gradually increases as it approaches the toe side. Therefore, by making the difference in the protrusion amount of each protrusion 43, 44 and 45 gradually increase as it approaches the toe side, the foot pressure center can be more reliably guided to the first protrusion 43.

[0061] In addition, the second ridge 44 and the third ridge 45 are continuously formed on both sides of the heel protrusion 42 and extend along the left and right side edges of the sole body 41, and the front ends thereof are arranged to be located at the center of the arch portion F2. The widths of the second ridge 44 and the third ridge 45 are formed to be constant in the length direction and narrower than the first ridge 43. As in the embodiment, by arranging the first ridge 43 on the outer sole 4 of the racing shoe 1 and arranging the second ridge 44 and the third ridge 45 on the left and right sides thereof, the adaptability of the driver's foot to operate the pedal is improved. In addition, the load on the foot when the sole of the foot presses the pedal and the sole of the foot leaves the pedal repeatedly during driving is effectively reduced.

Claims

1. A racing shoe is a racing shoe worn by a driver in a car race, characterized in that: include: The inner sole fits snugly against the sole of the driver's foot; an upper, joined to the insole and covering the driver's foot from above; an outer sole engaged with a lower portion of the inner sole and in contact with a pedal of the vehicle; The outsole comprises: The first protrusion extends from the heel of the driver's foot to the base of the driver's toe just below the plantar fascia; A second protrusion is provided closer to the plantar arch cover than the first protrusion; A third protrusion is provided just below the cuboid bone of the driver's foot; The pedal contact belt portion is formed along the short side direction of the outer sole from the base of the toes of the rider's foot to right below the transverse head of the adductor hallucis muscle.

2. The racing shoe according to claim 1, characterized in that: The upper and the outer sole are made of flame-retardant material.

3. The racing shoe according to claim 2, characterized in that: The outer sole is formed of any one of nitrile rubber, butadiene rubber, chloroprene rubber or a mixture thereof, and contains at least vanadium, calcium carbonate and calcium sulfate as flame retardants.

4. The racing shoe according to claim 2, characterized in that: The shoe upper is made of flame-retardant fiber.

5. The racing shoe according to claim 1, characterized in that: The pedal contact belt portion has a plurality of grooves at equal intervals.

6. The racing shoe according to claim 1, characterized in that: The first protrusion extends along a portion directly below the plantar fascia from the heel of the driver's foot to the base of the fourth toe of the driver's foot.

7. The racing shoe according to claim 1, characterized in that: The tops of the first protrusion, the second protrusion and the third protrusion are flat, and the first protrusion, the second protrusion and the third protrusion have the same height.

8. The racing shoe according to claim 1, characterized in that: The first protrusion has a first narrow width portion at an end portion thereof.

9. The racing shoe according to claim 1, characterized in that: The third protrusion has a third narrow width portion at an end portion thereof.

10. The racing shoe according to claim 1, characterized in that: The first protrusion and the third protrusion are provided on the upper side of the pedal contact belt portion.

11. The racing shoe according to claim 1, characterized in that: A midsole is sandwiched between the inner sole and the outer sole.

12. The racing shoe according to claim 1, characterized in that The shoe upper has a heel guard for protecting a heel portion of a driver's foot.

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