JP2005102788A - Sole structure of sport shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly move the body weight from the heel part to the side of the front foot part for a beginner, an intermediate level athlete and an upper level athlete with bad conditions of that day who are often landed from the heel part. <P>SOLUTION: A hard resin sole plate 1 having a plurality of studs 10 on a sole surface 1a is provided with a reinforcing part 2 satisfying the strength between a landing surface S and the bottom L<SB>B</SB>of a last L when landing a treading portion E, in the treading portion E; a heel portion H bending downward in the rear part of a middle foot portion M and connected to the middle foot portion M via a step Δ to a lower part; and ribs 3 and 4 disposed between the reinforced part 2 and the heel portion H substantially in the front/rear direction, satisfying the strength of the step Δ between the heel portion H and the middle foot portion M, and smoothly connecting the lower surface 2a of the reinforcing part 2 to the lower surface L<SB>B</SB>of the heel portion H. The ribs 3 and 4 are formed with notches 3c and 4c. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement in the sole structure of sports shoes.

  In general, sports shoes are used in baseball, soccer, etc. in addition to athletics. By the way, in the track and field competition, particularly in the case of a competition item including a short distance run such as a 100 m run or a run jumping, an instantaneous speed is required. For this reason, in particular, for advanced players, a running method is mainly used in which only the forefoot is grounded without touching the heel during sprinting.

  For this reason, the applicant has proposed a sole structure for suppressing the lowering of the heel portion of the foot as shown in Japanese Patent No. 2871537 for such a high-level player. This sole structure includes a reinforcing portion having a sole surface along the ground contact surface when the sole stepping portion is grounded, and a rib member disposed in the sole arch region. In this case, the lowering of the collar portion is suppressed by the reinforcing portion and the rib member at the time of landing.

  However, such a sole structure is mainly intended for an advanced level player who can be grounded only with the front foot part, and is very effective for such an advanced level player.

However, even a high-level player may not always be able to make contact with only the forefoot part due to fatigue or conditions of the day, but may also make contact with the buttocks or the middle foot part. In addition, for beginner and intermediate level athletes, there are many cases of grounding from the buttocks and the middle foot during sprinting. In such a case, in the conventional sole structure, the weight is increased from the buttocks to the front foot. When moving, the step between the sole stepped portion provided with the reinforcing portion and the sole heel portion is large (see FIG. 3 in the above publication), so that the reinforcing portion and the rib member are moved when the weight is moved. As a stop wall, the brake is applied at the time of landing and moving the weight, and as a result, there is a case where the weight cannot be smoothly transferred from the buttocks or the middle foot to the front foot.
Japanese Patent No. 2871537

  The problem to be solved by the present invention is often landing from the middle foot or the buttocks, especially for beginner and intermediate level athletes and advanced players with poor conditions of the day, from the buttocks and the middle foot to the forefoot. The point is to make it possible to smoothly move the weight to the club side.

  In the sole plate, the sole plate is provided with a reinforcing portion that satisfies the space between the ground contact surface and the last bottom surface when the stepping portion is grounded, and the step portion is bent downward while bending downward at the rear portion of the middle foot portion. The most important thing is to provide a rib part connected to the middle leg part via the ribs and to be disposed substantially in the front-rear direction between the reinforcing part and the heel part and satisfy the step of the heel part. Features.

  The sole structure of the sports shoe according to the invention of claim 1 includes a sole plate made of a hard resin that extends over the entire length of the shoe and has a plurality of studs provided on the bottom surface. The sole plate has a forefoot part, a stepping part, a middle foot part and a heel part corresponding to the forefoot part, the stepping part, the arch part and the heel part of the wearer's foot, respectively. It has a reinforcing part that satisfies the space between the grounding surface and the last bottom surface when the attached part is grounded. The heel part is connected to the middle leg part via a step downward while bending downward at the rear of the middle leg part. Between the reinforcement part and the heel part, the lower part of the reinforcement part and the lower part of the heel part are disposed between the reinforcement part and the heel part while satisfying the step between the heel part and the middle foot part. A rib-like member to be connected is provided.

  According to the first aspect of the present invention, the heel portion protrudes downward when the heel portion of the sole plate is connected to the middle foot portion via the downward step, and the rib-like member in the front-rear direction is the stepping portion. It is provided between the reinforcement part and the heel part so that the grounding surface at the time of grounding may be met. For this reason, even when trying to ground in the region from the heel part to the middle foot part without grounding only at the forefoot part of the sole plate during running, it can be grounded at the heel part or the rib-like member. As a result, a wide range of grounding (so-called flat grounding) from the heel part to the forefoot part of the sole plate is possible, and weight transfer from the heel part (or middle foot part) of the foot to the forefoot part can be performed smoothly. become. As a result, it is possible to run faster, especially for beginner and intermediate level athletes who are often landing from the buttocks and those with poor conditions of the day.

  On the other hand, in the invention described in Japanese Patent No. 2871537, a rib is provided for the purpose of suppressing the downward depression of the collar portion, and this rib is not intended to be positively grounded. For this reason, the rib is arrange | positioned only in the area | region where the stepping part was restricted, and is not extended to the collar part.

  In the invention of claim 2, the reinforcing portion has a honeycomb structure, a lattice-like rib structure, or a plurality of protrusions. Thereby, the bending rigidity of a reinforcement part can be improved, aiming at weight reduction.

  In the invention of claim 3, the rib-like member is constituted by a protruding rib extending substantially linearly in the front-rear direction while connecting the reinforcing portion and the flange portion. This rib is preferably composed of two ribs arranged along the arch of the foot on the inner and outer sides.

  In the invention of claim 4, the rib of the ridge has a cut extending substantially in the width direction behind the reinforcing portion and cut to the sole surface of the sole plate. Thereby, in the protruding rib, the bendability at the notch forming portion is improved. In this case, the flexibility of the sole plate can be further improved by forming the cuts at a plurality of positions.

  In the invention of claim 5, the sole plate is allowed to bend upward by the cut, and when the sole plate is bent downward, the end faces in the front-rear direction of the ribs interfere with each other across the cut. As a result, the downward bending of the sole plate is restricted.

  In this case, since the bendability of the sole plate is improved when the body weight is moved to the forefoot side, the weight can be moved more smoothly and the ribs are restrained by the restriction of the bend downward of the sole plate. Can maintain the shank effect.

  As in the invention of claim 6, the rib-like member may be composed of a plurality of protrusions arranged substantially linearly between the reinforcing portion and the heel portion. In this case, the gap between the adjacent protrusions corresponds to the cut in the invention of claim 4.

  In the invention of claim 7, a midsole made of a soft elastic member that fills the step of the heel part is provided on the upper surface of the heel part.

  According to the sole structure of the sports shoes according to the present invention, landing is often performed from the buttocks, especially in the case of beginner and intermediate level athletes and advanced level athletes with poor conditions of the day. There is an advantage that the weight can be smoothly transferred from the front part to the front foot part side.

  In sports shoes, a simple structure is used to smoothly move weight from the buttocks to the forefoot during exercise such as running.

  FIGS. 1 to 3 are views for explaining a sole structure of a sports shoe according to an embodiment of the present invention. FIG. 1 is a front view of a sole plate constituting the sole structure, and FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. 1 and is shown together with the last of sports shoes, and FIGS. 4 to 6 are views showing a specific structure of a reinforcing portion of the sole plate.

  As shown in FIG. 1, the sole plate 1 extends over the entire length of the shoe, and includes a forefoot portion F and a stepping portion E corresponding to the forefoot portion, the stepping portion, the arch portion, and the heel portion of the wearer's foot, respectively. , Has a midfoot part M and a heel part H. The sole plate 1 is made of a relatively hard synthetic resin such as polyurethane or polyamide elastomer. A plurality of creeps (studs) 10 are fixed to the forefoot part F and the stepping part E of the sole plate 1. Each of the creats 10 is planted in the center of the ridge 11 for reinforcement. Each creat 10 may be detachably attached to the sole plate 1 by screwing or the like.

A thick reinforcing portion 2 is provided at the stepping portion E of the sole plate 1 (see FIG. 2). Reinforcement part 2, as shown in FIG. 3, so as to satisfy the between the bottom surface L _B of the ground surface S and the last L when ground踏付site E, and projects downward from the sole surface 1a of the sole plate 1 Is formed. In other words, the front side portion of the reinforcing portion 2 is mainly formed along the ground contact surface S when the stepping portion E is grounded. The reinforcing portion 2 is composed of a plate-like portion 20 formed on the ground surface S side and a lattice-like rib structure portion 21 formed thereon.

  As shown in FIG. 4, the lattice-like rib structure portion 21 is configured by arranging a plurality of ribs 21 a in a lattice shape on the upper surface of the plate-like portion 20. Instead of the lattice-like rib structure portion 21, a honeycomb structure 22 formed by combining hexagonal ribs may be used as shown in FIG. Alternatively, as shown in FIG. 6, a protrusion structure portion 23 in which a plurality of protrusions (for example, cylindrical protrusions) 23 a are arranged may be provided. By providing such a structure in the reinforcing portion 2, it is possible to prevent the reinforcing portion 2 from falling downward while reducing the weight.

  As shown in FIG. 3, the heel portion H of the sole plate 1 is bent downward (that is, toward the ground contact surface) behind the middle foot portion M while being bent downward through a step Δ. It is connected to the. The step Δ is preferably larger from the viewpoint of weight shift from the buttocks side, but if it is too large, the step Δ is likely to be caught at the time of ground contact, and the weight increases. Therefore, the value of the step Δ is set to 1 mm (preferably 3 mm) or more and 20 mm or less. In this embodiment, the step Δ is set to about 5.5 mm.

  A midsole 5 made of a soft elastic member that fills the step Δ of the heel part H is attached to the upper surface of the heel part H, that is, the surface on the foot contact surface side of the wearer's foot. As the material constituting the midsole 5, for example, a thermoplastic synthetic resin foam such as ethylene-vinyl acetate copolymer (EVA) or a thermosetting synthetic resin foam such as polyurethane (PU) is used. A similar midsole 6 is also mounted in a recess formed in the stepped portion E of the sole plate 1.

As shown in FIG. 1, protruding ribs 3, 4 that extend substantially linearly in the front-rear direction are disposed between the reinforcing portion 2 and the flange portion H. Each of the ribs 3 and 4 is disposed on the inner shell side and the outer shell side of the sole plate 1, respectively, and both connect the reinforcing portion 2 and the heel portion H. As shown in FIGS. 2 and 3, the lower surfaces 3 a and 4 a of the ribs 3 and 4 satisfy the step Δ between the midfoot part M and the heel part H, and the lower surface 2 a and the heel part of the reinforcing portion 2. The lower surface H _B of H is smoothly connected in an arc shape. In addition, even if there is a step of about 0.5 to 2 mm between the lower surface 2a of the reinforcing portion 2 and the lower surfaces 3a and 4a of the ribs 3 and 4, there is no practical problem. Such cases are included.

  Each of the ribs 3 and 4 is formed with slit-shaped cuts 3c and 4c, respectively. As shown in FIG. 1, the cuts 3 c and 4 c extend substantially in the width direction behind the reinforcing portion 2. Further, the cuts 3c and 4c are cut upward to the sole surface 1a of the sole plate 1 as shown in FIG. The incisions 3c and 4c facilitate bending upward of the sole plate 1 (that is, bending toward the wearer's sole), while the incisions 3c and 4c are performed when the sole plate 1 is bent downward. Are provided so as to restrict the downward bending of the sole plate 1 by the interference between the end surfaces of the ribs 3 and 4 in the front-rear direction, and the gaps in the front-rear direction of the notches 3c and 4c are For example, it is set to about 1-2 mm. In addition, by forming the notches 3c and 4c at a plurality of locations of the ribs 3 and 4, the upward bending property of the sole plate 1 can be further improved.

  As shown in FIG. 2, a winding portion 12 that protrudes substantially upward is formed on both side edges of the middle foot portion M of the sole plate 1. The winding part 12 is for bonding the sole plate 1 to an upper part (not shown). Moreover, the winding-up part 12 can improve the fitting property with respect to a wearer's leg, and can improve the shank effect of the midfoot part M.

  In this case, as described above, the heel part H of the sole plate 1 is connected to the middle foot part M via the step Δ downward, and is along the ground contact surface S when the stepping part E is grounded. The ribs 3 and 4 in the front-rear direction are provided between the reinforcing portion 2 and the heel part H. For this reason, even when trying to ground in the region from the midfoot part M to the heel part H without grounding only at the forefoot part F of the sole plate 1 during exercise such as running, it can be grounded by the ribs 3 and 4. It becomes like this.

  As a result, a wide range of grounding (so-called flat grounding) from the heel part H to the forefoot part F of the sole plate 1 is possible, and weight transfer from the heel part (or middle foot part) of the foot to the forefoot part is smooth. Will be able to do. As a result, players who often land from the buttocks, especially beginner and intermediate level players, and advanced level players with poor conditions of the day can run faster.

  In addition, in this case, when the weight is moved to the forefoot side, the flexibility of the sole plate 1 is improved by the notches 3c and 4c formed in the ribs 3 and 4, so that the weight can be moved more smoothly. Is possible. On the other hand, the shank effect by the ribs 3 and 4 can be maintained by the downward bending restriction caused by the interference between the front and rear end surfaces of the ribs 3 and 4 through the cuts 3c and 4c.

In addition, although the example which provided the ribs 3 and 4 of the protruding item | line extended in the front-back direction was shown in the said Example, application of this invention is not limited to this. For example, the rib-shaped member may be configured by arranging a plurality of conical or columnar protrusions in a substantially straight line in the front-rear direction. In this case, it is preferable that the lower surface of each projection is smoothly connected to the lower surface H _B of the lower surface 2a and the heel portion H of the reinforcing portion 2.

It is a front view of the sole plate which comprises the sole structure of the sports shoes by one Example of this invention. FIG. 2 is a side view of the outer side of the sole plate of FIG. 1. It is the III-III sectional view taken on the line of FIG. 1, Comprising: It is a figure shown with the last of sports shoes. FIG. 6 is a front view (including a partial cross-sectional view) of a lattice-like structure part that constitutes a reinforcing part of a sole plate. FIG. 3 is a front view (including a partial cross-sectional view) of a honeycomb structure that constitutes a reinforcing portion of a sole plate. It is a front view (a partial sectional view is included) of the projection structure part which constitutes the reinforcement part of a sole plate.

Explanation of symbols

1: Sole plate 1a: Sole surface

2: Reinforcement part 2a: Lower surface 21: Lattice-like rib structure part 22: Honeycomb structure 23: Projection structure part

3: Rib 3c: Cutting

4: Rib 4c: Cut

F: forefoot portion E:踏付site M: midfoot portion H: heel portion delta: step S: ground plane L: Last L _B: bottom

Claims (7)

In the sole structure of sports shoes,
A sole plate (1) made of a hard resin that extends over the entire length of the shoe and has a plurality of studs (10) on the sole surface (1a),
Forefoot part (F), stepping part (E), middle foot part (M) and heel part corresponding to the forefoot part, the stepping part, the arch part and the buttocks of the wearer's foot, respectively. (H)
The stepped portion (E) has a reinforcing portion (2) that satisfies the space between the ground contact surface (S) and the bottom surface (L _B ) of the last (L) in the front region of the stepped portion (E). And
The heel region (H) is connected to the middle foot region (M) via a step (Δ) downward while bending downward at the rear of the middle foot region (M),
While being disposed substantially in the front-rear direction between the reinforcing portion (2) and the heel region (H), the step (Δ) between the heel region (H) and the middle foot region (M) is satisfied. A rib-like member for connecting the lower surface (2a) of the reinforcing portion (2) and the lower surface (H _B ) of the flange portion (H) is provided;
Sole structure of sports shoes characterized by that. In claim 1,
The reinforcing part (2) has a honeycomb structure, a lattice-like rib structure or a plurality of protrusions,
Sole structure of sports shoes characterized by that. In claim 1,
The rib-like member is a rib (3, 4) having a ridge extending substantially linearly in the front-rear direction while connecting the reinforcing portion (2) and the flange portion (H).
Sole structure of sports shoes characterized by that. In claim 3,
The ribs (3, 4) extend substantially in the width direction behind the reinforcing portion (2) and have cuts (3c, 4c) cut vertically to the sole surface (1a) of the sole plate (1). Have
Sole structure of sports shoes characterized by that. In claim 4,
The notches (3c, 4c) allow the sole plate (1) to be bent upward, and when the sole plate (1) is bent downward, the ribs (3c, 4c) are sandwiched between the ribs ( The bending of the sole plate (1) in the downward direction is regulated by the interference between the end faces in the front-rear direction of (3, 4).
Sole structure of sports shoes characterized by that. In claim 1,
The rib-like member is composed of a plurality of protrusions arranged substantially linearly between the reinforcing portion (2) and the flange portion (H), and the lower surface of each protrusion is the lower surface (2a) of the reinforcing portion (2). And the lower surface (H _B ) of the heel part (H) are smoothly connected,
Sole structure of sports shoes characterized by that. In claim 1,
On the upper surface of the heel part (H), a midsole (5) made of a soft elastic member that fills the step (Δ) of the heel part (H) is provided.
Sole structure of sports shoes characterized by that.

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