JP2013017604A - Sole structure for shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the repulsive force in a direction of separation from the ground while retaining cushioning properties.SOLUTION: The sole structure 1 for a shoe includes: a first plate 2 disposed above; a second plate 3 disposed below the first plate 2 at an interval; and a plurality of columnar members 4 disposed in the vertical direction between the first and second plates 2 and 3, respectively having upper ends 4a connected to the first plate 2 and lower ends 4b connected to the second plate 3 and disposed at an interval to each other in the longitudinal direction. Each columnar member 4 is inclined forward as the upper end 4a of the columnar member 4 is disposed at a position in the front of the lower end 4b. The second plate 3 has an inclined part 3A gradually inclined obliquely upward toward the rear. The lower end 4b of each columnar member 4 is connected to the inclined part 3A, and a gap C' is formed below the inclined part 3A of the second plate 3 at a connected area of the lower end 4b of the columnar member 4.

Description

  The present invention relates to a sole structure for shoes, and more particularly, to a sole structure that can improve the repulsive force in the direction of takeoff while maintaining cushioning properties.

  As the sole structure, for example, the one shown in Japanese Patent Application Laid-Open No. 2003-339405 has been proposed by the present applicant (see FIG. 2 of the same publication). The sole structure is disposed between the upper and lower plates facing each other with a certain gap in the vertical direction, and the upper convex surface of the corrugated portion is fixed to the upper plate. And a corrugated plate whose lower convex surface is fixed to the lower plate.

  In addition, as shown in FIG. 1A of the pamphlet of International Publication No. 2006/1229837, the upper plate and two bulge portions that are disposed below and form a gap between the upper plate and the upper plate. There is described a sole structure including a wave-like lower plate having an upper surface and an elastic block for connecting an upper convex portion formed between the bulging portions of the lower plate to the upper plate.

  Furthermore, in JP 2009-240590 A, as shown in FIG. 1 of the same publication, a lower convex shape that is provided on the upper sheet portion disposed on the upper side and the lower surface thereof and is curved downwardly in a convex shape. There is described a sole structure including a curved portion and a plurality of curved seat portions arranged in parallel while partially overlapping the upper seat portion in the front-rear direction.

  In the above-described sole structure shown in Japanese Patent Application Laid-Open No. 2003-339405, when a shoe is landed, the corrugated plate is compressed and deformed so that the corrugated portion of the corrugated plate becomes flat, so that the gap between the upper and lower plates serves as a cushion hole. It acts to absorb the impact load.

  However, in this case, since the upper convex surface of the corrugated portion of the corrugated plate is fixed to the upper plate and the lower convex surface is fixed to the lower plate, the upper convex surface and the lower convex surface of the corrugated plate are the upper and lower plates. As a result, the compression deformation of the corrugated portion of the corrugated plate is suppressed. In addition, the elastic repulsion force released by the corrugated plate that has been compressed and deformed when the shoe is released merely acts upward on the upper plate via the upper convex surface of the corrugated plate.

  In the sole structure shown in the above pamphlet of International Publication No. 2006/129737, when the shoe lands, the bulges of the lower plate are compressed and deformed so that the bulges are flattened, so that the gap between the upper and lower plates becomes a cushion hole. Acting as an impact load is absorbed.

  In this case, since the upper convex portion between the bulging portions of the lower plate is connected to the upper plate via the elastic block, the bulging portions are relatively easily deformed by compression. Improved.

  However, since this sole structure is mainly intended to improve the cushioning property at the time of landing, the elastic repulsive force released by the bulging part and the elastic block that have been compressed and deformed when the shoe is released is exerted on the upper plate. It simply works upward.

  In the sole structure shown in the above Japanese Patent Application Laid-Open No. 2009-240590, when the shoe is landed, the downward convex curved portion of the curved sheet portion is compressed and deformed to absorb the impact load.

  In this case, the rear side end portion of the downward convex curved portion that has been compressed and deformed presses and deforms the curved sheet portion adjacent to the curved sheet portion, and as a result, the cushioning property of the entire sole structure is reduced. Is further improved. Also, in this case, when the load moves forward after the shoes have landed, the portion from the downward convex curved portion to the front end of each curved seat portion is folded in order toward the front side. Deform as described. Thereby, the load movement to the front at the time of driving | running | working is performed smoothly and the feeling of a ride is improving.

  However, since this sole structure is mainly intended to improve the cushioning property at the time of landing and the ride feeling at the time of running, the elastic repulsion that is released by each curved seat portion that has been deformed so as to be folded when the shoe is released. The force only acts upward or obliquely backward with respect to the upper seat portion.

  The present invention has been made in view of such conventional circumstances, and the problem to be solved by the present invention is to provide a sole structure that can improve the repulsive force in the direction of separation while maintaining cushioning properties. Trying to.

  A sole structure for a shoe according to the present invention includes a first plate disposed above, a second plate disposed below and spaced apart from the first plate, and the first and first plates. Each of the two plates is disposed in the vertical direction, and has an upper end coupled to the first plate and a lower end coupled to the second plate, and is disposed at an interval in the front-rear direction. And a plurality of columnar members. The columnar member is disposed to be inclined forward by disposing the upper end at a position forward of the lower end. The second plate has an inclined portion that is inclined obliquely upward as it goes rearward, and the lower end of the columnar member is connected to the inclined portion. A gap is formed below the inclined portion of the second plate at the connection portion at the lower end of the columnar member (see claim 1).

  According to the present invention, when the shoe lands, the columnar member is elastically deformed, and the inclined portion of the second plate to which the lower end of the columnar member is connected is compressed at the lower end of the columnar member toward the gap. Cushioning properties can be improved by elastic deformation.

  In addition, in this case, when the shoe leaves the ground, when the inclined portion of the second plate inclined obliquely upward as it goes backward is elastically deformed and then returns to its original position, it repels obliquely forward with respect to the upper end of the columnar member. Apply force. Thereby, the repulsive force to the take-off direction of shoes can be improved.

  Further, in this case, the plurality of columnar members arranged at intervals in the front-rear direction sequentially compress and deform the corresponding inclined portions of the second plate as the load moves forward while traveling. Since a repulsive force is applied in the direction of takeoff, it is possible to realize a smooth weight shift forward while traveling, and at the same time, it is possible to improve a feeling of riding while traveling.

  In the present invention, the columnar member elastically deforms the inclined portion of the second plate downward when the shoe lands, and the columnar member obliquely forwards with respect to the first plate via the upper end when the shoe leaves. An elastic repulsive force is applied to (see claim 2).

  In the present invention, the first and second plates and the columnar members are both made of hard resin and are integrally formed (see claim 3). In this case, since the entire sole structure is composed of a single unit, the assembling work of the shoes becomes easy.

  In the present invention, the second plate is a corrugated plate having a plurality of corrugated portions. In this case, the inclined portion of the corrugated plate to which the lower end of the columnar member is connected is a portion that inclines upward as it goes backward in the corrugated portion of the corrugated plate (see claim 4).

  In the present invention, a plurality of gaps below the inclined portion of the second plate to which the lower ends of the columnar members are connected are provided corresponding to the respective columnar members (see claim 5). In this case, the inclined portion of the second plate that is elastically deformed by the columnar member at the time of landing is not easily affected by the elastic deformation of the inclined portion adjacent to the inclined portion. As the vehicle moves forward, each inclined part can be elastically deformed independently, and as a result, it is easy to control the cushioning property when landing, the resilience when taking off, and the ride feeling during running become.

  In the present invention, a third plate is provided below the second plate and spaced from the second plate, and the gap is formed between the second and third plates. It is formed of a plate (see claim 6).

  In the present invention, the second and third plates are corrugated plates each having a plurality of corrugated portions (see claim 7).

  In the present invention, the upward bulging portion of the second plate and the downward bulging portion of the third plate are arranged to face each other vertically (see claim 8). In this case, a large gap can be secured below the inclined portion of the second plate to which the lower end of the columnar member is connected, thereby allowing a large amount of elastic deformation with respect to the inclined portion of the second plate. Further, the cushioning property at the time of landing and the resilience at the time of taking off can be further improved.

  In the present invention, the downward bulging portion of the second plate and the upward bulging portion of the third plate are connected (see claim 9).

  The sole structure according to the present invention is provided on a heel portion of a shoe (see claim 10).

  As described above, according to the sole structure according to the present invention, the first and second plates are arranged at intervals in the vertical direction, and a plurality of columnar members are disposed in the front-rear direction between the first and second plates. The columnar member is arranged to be inclined forward by disposing the upper end of the columnar member at a position forward of the lower end, and an inclined portion that is inclined obliquely upward as it goes rearward is provided. Since the lower end of the columnar member is connected to the inclined portion and a gap is formed below the inclined portion of the second plate at the connection portion of the lower end of the columnar member, when the shoes land The columnar member is elastically deformed, and the inclined portion of the second plate to which the lower end of the columnar member is connected is compressed at the lower end of the columnar member and elastically deformed toward the gap, thereby improving cushioning properties. so That.

  In addition, in this case, when the shoe is released, when the inclined portion of the second plate is elastically deformed and then returned to its original state, a repulsive force is applied obliquely forward to the upper end of the columnar member, thereby releasing the shoe. The repulsive force toward the ground can be improved.

  Further, in this case, the plurality of columnar members arranged at intervals in the front-rear direction sequentially compress and deform the corresponding inclined portions of the second plate as the load moves forward while traveling. Since a repulsive force is applied in the direction of takeoff, it is possible to realize a smooth weight shift forward while traveling, and at the same time, it is possible to improve a feeling of riding while traveling.

It is an outer side side view of the sole structure for shoes by one Example of this invention. It is an inner side side view of the sole structure of FIG. It is a bottom view of the sole structure of FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. FIG. 2 is an enlarged partial view of FIG. 1. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. FIG. 2 is an enlarged partial view of FIG. 1 for explaining an inclination angle of a second plate. (A) is a graph which shows the time change of the angle which the vector of the force at the time of kicking when a test subject actually travels makes with respect to the vertical plane, and (b) is the back at the time of kicking It is a graph which shows the time change of the force which kicks in the. It is a figure which shows the state which the test subject is drive | working. It is a schematic diagram which takes out and shows a part of sole structure of FIG. It is a figure for demonstrating the action | operation at the time of landing of the sole structure of FIG. It is a figure for demonstrating the action | operation at the time of the takeoff of the sole structure of FIG. It is an enlarged partial view of the outer side surface of the sole structure for shoes according to another embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 12 show a shoe sole structure according to an embodiment of the present invention. In the following description, upper, lower, front, and rear mean upper, lower, front, and rear, respectively, that is, when FIG. 1 is taken as an example, It points to the left, above and below, respectively. In FIG. 1, H indicates the buttocks of the sole structure, M indicates the midfoot, and F indicates the forefoot.

  As shown in FIGS. 1 and 2, the sole structure 1 is disposed on the upper side and is disposed in a substantially flat shape from the heel part H to the middle foot part M, and beyond the middle foot part M, the front foot part. The first plate 2 made of a hard resin that extends in a wavy shape to the stepping portion of F and the first plate 2 are disposed below and spaced apart from the first plate 2, and from the heel part H to the middle foot part Between the second plate 3 made of a hard resin and the first and second plates 2 and 3 disposed in a wavy shape around the front end of M, the first plate 2 and the second plate 3 are each disposed substantially vertically. And a plurality of columnar members 4 made of hard resin that are connected to the second plates 2 and 3 and spaced apart in the front-rear direction.

  As shown in FIGS. 3 to 7, the first plate 2 extends in the entire width direction of the sole structure 1, is disposed at the center portion in the width direction, and is formed in a flat shape in the width direction. Part 20 and a pair of left and right winding parts 21 that are arranged on both left and right side parts and wound upward. Moreover, the 1st plate 2 has the winding-up part 22 wound up upwards in the back end.

  As shown in FIGS. 1, 2 and 5, the second plate 3 is a corrugated plate composed of a plurality of corrugated portions having ridgelines in the width direction and proceeding in the front-rear direction. It has a bulging portion 30 and a bulging portion 31 downward. Further, as shown in FIGS. 3, 4, 6, and 7, the second plate 3 is disposed along the inner shell side portion and the outer shell side portion of the buttocks H. It is not provided in the central part.

  As shown in FIG. 5, each columnar member 4 has an upper end 4 a connected to the first plate 2, and a lower end 4 b connected to the upward bulging portion 30 of the second plate 3. Yes. Similarly to the second plate 3, the columnar member 4 is arranged along the inner side portion and the outer side portion of the heel part H, and is not provided in the central part of the heel part H.

  In each columnar member 4, the upper end 4 a is disposed at a position ahead of the lower end 4 b, and each columnar member 4 is disposed to be inclined forward. Note that the substantially vertical direction as the arrangement direction of each columnar member 4 includes an obliquely upward direction between the horizontal direction and the vertical direction. In addition, a plurality of gaps C are formed between the first and second plates 2 and 3 by partitioning the gap between the first and second plates 2 and 3 by the columnar members 4.

  The inclined portion (shaded portion in FIG. 5) of the bulging portion 30 to which the lower end 4b of each columnar member 4 is connected in the second plate 3 is disposed obliquely upward as it goes rearward.

  Below the second plate 3, as shown in FIGS. 1, 2, and 5, there is a space between the second plate 3 and the front end of the middle foot M with a space between the second plate 3. A third plate 5 made of hard resin is disposed so as to be wavy. The third plate 5 is integrated with the second plate 3 in the middle foot M.

  The third plate 5 is a corrugated plate having a ridgeline in the width direction and composed of a plurality of corrugated portions that advance in the front-rear direction. Have. Similarly to the second plate 3, the third plate 5 is arranged along the inner part and the outer part of the heel part H, and is provided in the central part of the heel part H. (See FIG. 3).

  The bulging portion 50 below the third plate 5 is disposed so as to face the bulging portion 30 above the second plate 3 in the vertical direction, and the bulging portion 51 above the third plate 5. Are vertically opposed to the bulging portion 31 below the second plate 3 and are connected to each other. Thereby, a plurality of gaps C ′ are formed between the second plate 3 and the third plate 5. The gap C ′ is provided below the inclined part 3A (shaded part in FIG. 5) of the bulging part 30 of the second plate 3 to which the lower end 4b of the columnar member 4 is connected. It is provided at a position corresponding to the columnar member 4.

  The hard resins constituting the first and second plates 2 and 3 and the columnar member 4 and the third plate 5 are, for example, thermoplastic materials such as thermoplastic polyurethane (TPU) and polyamide elastomer (PAE), and epoxy. It is comprised from thermosetting materials, such as resin and unsaturated polyester resin. In this example, the first, second and third plates 2, 3, 5 and the columnar member 4 are integrally formed by, for example, an injection molding method. Or the 1st, 2nd, 3rd plate 2, 3, 5 and the columnar member 4 may be comprised from the hard rubber.

  Further, as shown in FIGS. 1, 2, 4 to 7, the first plate 2 is extended from the heel part H to the middle foot part M to the stepped part of the front foot part F. An upper midsole 6 is provided. The upper midsole 6 extends in the entire width direction of the sole structure 1, and has a center portion 60 disposed at the center portion in the width direction and left and right sides disposed on both left and right sides thereof and wound upward. A pair of winding portions 61. The upper midsole 6 has a winding part 62 that is wound upward at the rear end of the heel.

  The upper midsole 6 is made of a soft elastic member. For example, a thermoplastic synthetic resin such as ethylene-vinyl acetate copolymer (EVA) or a foam thereof, a thermosetting resin such as polyurethane (PU), or a foam thereof. Or a rubber material such as butadiene rubber or chloroprene rubber or a foam thereof.

  As shown in FIGS. 1, 2, and 4, a lower midsole 7 is disposed in front of and below the upper midsole 6 in the forefoot portion F. The lower midsole 7 is also composed of a soft elastic member similar to the upper midsole 6.

  As shown in FIGS. 1 to 3 and FIGS. 5 to 7, outsole plates 10, 11, and 12 that are in contact with the road surface are fixed to the lower surface of the third plate 5. The outsole plates 10 and 11 are disposed on the outer side of the buttocks H and are spaced apart in the front-rear direction. The outsole plate 12 is disposed on the inner side of the buttocks H. Between the outsole 10, 11 and the outsole 12, an opening portion Ha extending in the front-rear direction is formed. An outsole 13 is fixed to the lower surface of the lower midsole 7. The outsole 13 is formed with a groove 13a extending in the width direction.

Next, in FIG. 8, the inclined portion 3A of the second plate 3 to which the lower end 4b of the columnar member 4 is connected is inclined obliquely upward as it goes backward (to the right in the figure). The angle formed by the inclined portion 3A with respect to the rear side in the horizontal direction (that is, the angle measured counterclockwise with respect to the horizontal plane) α is:
0 <α ≦ 40 ° (1)
Is preferably set to
α = 15 ° (2)
Is set to
The reason is as follows.

  Fig. 9 is a graph showing the time variation of the angle formed by the subject's kicking force vector with respect to the vertical plane when kicking out while running, with the subject actually running (see Fig. 9A). FIG. 9B is a graph showing the time change of the force of kicking backward at the time of kicking out, which is graphed. In FIG. 9 (a), the section where the angle is negative and the section where the force is negative in FIG. 9 (b) shift to the kick-out operation after landing. It corresponds to the interval between and shows that the downward force acting on the ground contact surface acts diagonally forward. Therefore, after shifting to the kicking-out operation, the vector of the force that kicks the grounding surface backward is a positive value measured counterclockwise from the vertical plane.

  As shown in FIG. 9A, after shifting to the kicking-out operation, the angle that the vector of the force that kicks the contact surface backward counterclockwise with respect to the vertical plane is 0 to 40 [°]. In the present embodiment, the force for kicking the grounding surface backward is supported by the second plate 3 via the columnar member 4, so that the inclined plate 3 </ b> A is disposed in the horizontal direction. It is preferable that the angle is 0 to 40 [°] when measured counterclockwise. Therefore, the angle α formed by the inclined portion 3A of the second plate 3 in the counterclockwise direction with respect to the horizontal plane is set as in the above equation (1).

  Further, from FIG. 9B, the maximum value of the kicking force Fy is generated at 236 [ms], and at this time, the counterclockwise rotation that the vector of the kicking force Fy makes with respect to the vertical plane. The angle is 15 [°] from FIG. Therefore, the preferred value of the angle α that the inclined portion 3A of the second plate 3 makes counterclockwise with respect to the horizontal plane is set as in the above equation (2).

Next, the operation of the sole structure 1 configured as described above will be described with reference to the schematic diagrams of FIGS.
FIG. 10 is a schematic view showing the first plate 2 and the second plate 3 to which the columnar member 4 and the upper and lower ends 4a and 4b of the sole structure 1 are connected. FIG. 11 and FIG. 12 are further schematic representations of FIG. 10 and are represented only by lines. FIG. 11 shows a state when the shoe is landing, and FIG. 12 shows a state when the shoe is taken off.

  When the shoes land, as shown in FIG. 11, a downward impact load P directed diagonally forward from the foot of the shoe wearer acts on the central portion 20 of the first plate 2. When the impact load P is loaded, the columnar member 4 is elastically deformed (shear deformation, compression deformation and bending deformation), and the inclined portion 3A of the second plate 3 to which the lower end 4b of the columnar member 4 is connected is Compressed by the pressing load W acting from the lower end 4b of the elastic member and elastically deforms toward the gap C ′. Thereby, the impact load P at the time of landing can be absorbed and cushioning properties can be improved.

  Next, when the impact load P is unloaded at the time of shoe takeoff, as shown in FIG. 12, the inclined portion 3A of the second plate 3 that has been elastically deformed tries to return to its original shape, and the columnar member. 4. A repulsive force Q is applied to the upper end 4a of 4 obliquely forward (and hence in the direction of takeoff). Thereby, the repulsive force to the take-off direction of shoes can be improved.

  Here, in the sole structure described in Patent Document 1 described above, the upper and lower plates are clamped between the wearer's feet and the ground contact surface when the shoes are landed, so that they are pressed against the lower plate via the corrugated plate. Even if a load is applied, the lower plate cannot be deformed downward, and as a result, compression deformation of the corrugated plate is suppressed. In addition, when the corrugated plate is compressed and deformed, the corrugated portion of the corrugated plate is deformed so that the upper convex surface sinks downward. The force simply acts upwards on the upper plate via the upper convex surface of the corrugated plate.

  On the other hand, in the sole structure described in Patent Document 2, since the upper convex portions between the bulging portions of the lower plate are connected to the upper plate via elastic blocks, the elastic block is The compression deformation of each bulging part of the lower plate is relatively easy due to the compression deformation of the lower plate, but the elastic block is arranged in the vertical direction and the lower end of the elastic block is connected to the upper convex part of the lower plate. When the elastic block is compressively deformed, it is deformed in the vertical direction along the center line. For this reason, the elastic repulsion force released by the elastic block that has been compressively deformed when the shoe is released merely acts upward on the upper plate.

  Further, in the sole structure described in Patent Document 3, when the shoe is landed, the lower convex curved portion of the curved seat portion is compressively deformed, and the rear side end portion of the downward convex curved portion subjected to the compressive deformation is The curved sheet portion adjacent to the curved sheet portion is pressed and compressed and deformed, and each curved sheet portion is deformed so as to be folded in order toward the front side as the load moves forward while traveling. For this reason, the elastic repulsive force released by each curved sheet portion that has been deformed so as to be folded when the shoe leaves is merely acting upward or obliquely rearward with respect to the upper sheet portion.

  Furthermore, according to the present embodiment, during traveling, the plurality of columnar members 4 arranged at intervals in the front-rear direction are sequentially moved to the respective inclined portions 3A of the second plate 3 along with the forward load movement. , And a repulsive force acting on the center portion 20 of the first plate 2 in the direction of takeoff, so that it is possible to achieve a smooth weight shift forward while traveling and at the same time a ride feeling while traveling Can be improved.

  In addition, since the first, second, and third plates 2, 3, 5 and the columnar member 4 are integrally formed of resin, the entire sole structure can be configured as a single unit, thereby assembling the shoes. Becomes easier.

  In addition, since a plurality of gaps C ′ below the inclined portion 3A of the second plate 3 to which the lower end 4b of the columnar member 4 is connected are provided corresponding to each columnar member 4, the columnar member 4 at the time of landing. The inclined portion 3A of the second plate 3 that is elastically deformed by the movement is less susceptible to the elastic deformation of the inclined portion 3A adjacent to the inclined portion 3A, so that the load moves forward during traveling. Each of the inclined portions 3A can be elastically deformed independently as it goes on, and as a result, the cushioning property at the time of landing, the resilience at the time of takeoff, and the ride feeling during traveling can be easily controlled.

  In addition, since the upward bulging portion 30 of the second plate 3 and the downward bulging portion 40 of the third plate 4 are vertically opposed to each other, the lower end 4b of the columnar member 4 is connected. A large gap can be secured below the inclined portion 3A of the second plate 3, thereby allowing a large amount of elastic deformation with respect to the inclined portion 3A of the second plate 3. As a result, the cushioning property and separation at landing are reduced. The resilience of the earth can be further improved.

  In the above-described embodiment, the example in which the lower end 4b of the columnar member 4 is connected to the middle portion (intermediate portion) of the inclined portion 3A of the second plate 3 is shown. It is not limited.

  FIG. 13 is an enlarged partial view of the outer side surface of the sole structure for shoes according to another embodiment of the present invention, corresponding to FIG. 5 of the above embodiment. In FIG. 13, the same reference numerals as those in the above-described embodiment indicate the same or corresponding parts.

  As shown in FIG. 13, the lower end 4 b of the columnar member 4 is the rear end portion of the inclined portion 3 </ b> A of the second plate 3, that is, the position of the apex of the bulging portion 30 above the second plate 3. It is connected to.

  Also in this case, as in the above-described embodiment, when a downward impact load acting diagonally forward from the foot of the shoe wearer acts upon landing of the shoe, the columnar member 4 is elastically deformed (shear deformation, compression deformation and bending deformation). ) And the inclined portion 3A (the end portion thereof) of the second plate 3 to which the lower end 4b of the columnar member 4 is coupled is compressed by the pressing load acting from the lower end 4b of the columnar member 4 to the side of the gap C ′. Since it is elastically deformed toward the surface, the impact load at the time of landing can be absorbed and the cushioning property can be improved. Further, when the shoe is taken off, the slanted portion 3A of the second plate 3 that has been elastically deformed with the unloading of the impact load tries to return to the original, and obliquely forward (to the upper end 4a of the columnar member 4) Therefore, since the repulsive force is applied to the takeoff direction), the repulsive force of the shoe in the takeoff direction can be improved.

  In the present invention, a structure in which both the embodiment and the other embodiments are combined may be adopted. That is, the structure as shown in the above embodiment in which the lower end 4b of the columnar member 4 is connected to the middle portion (intermediate portion) of the inclined portion 3A of the second plate 3 is adopted as a part of the sole structure. The other end 4b of the columnar member 4 is connected to the rear end portion of the inclined portion 3A of the second plate 3 (that is, the position of the apex of the bulging portion 30 above the second plate 3). You may make it employ | adopt the structure as shown in an Example for the remaining part of the same sole structure.

  Even in this case, as in the above-described embodiment and the other embodiments, when the shoe lands, the impact load at the time of landing can be absorbed, and cushioning can be improved. You can improve the repulsive force.

  In the above-described embodiment, the example in which the bulging portion 30 upward of the second plate 3 and the bulging portion 50 downward of the third plate 5 are vertically opposed to each other is shown. The bulging portions 30 and 50 do not necessarily have to be opposed to each other vertically.

  In the above embodiment, the case where the second plate 3 is a corrugated plate has been described as an example. However, the application of the present invention is not limited to this. About the 2nd plate by this invention, each inclined part 3A connected with each lower end of the some columnar member 4 should just be inclined and arrange | positioned diagonally upward as it goes back. Similarly, the third plate 5 is not limited to the corrugated plate as long as it can form a gap with at least the second plate 3.

  In the above-described embodiment, an example in which a plurality of gaps C ′ respectively corresponding to the plurality of columnar members 4 is provided, but application of the present invention is not limited to this. The gap formed below each columnar member 4 may be a common or single gap.

  In the above embodiment, the case where the gaps C and C ′ are both hollow is shown as an example. However, the second and third plates 3 and the inside of both or any one of the gaps C and C ′, 5 may be filled with a soft filler that does not affect the elasticity of 5 (for example, a soft sponge material).

  In the above-described embodiment, an example in which the sole structure is provided on the heel portion of the shoe is shown. However, the sole structure according to the present invention may be provided on the forefoot portion of the shoe.

  As described above, the present invention is useful for a sole structure for shoes, and is particularly suitable for those requiring improvement in cushioning properties during landing and resilience in the takeoff direction.

1: Sole structure

2: First plate

3: Second plate 3A: Inclined portion 30: Upward bulging portion 31: Downward bulging portion

4: Columnar member 4a: Upper end 4b: Lower end

5: 3rd plate 50: bulge part to the lower part 51: bulge part to the upper part

C ': gap

JP 2003-339405 A (see FIG. 2) International Publication No. 2006/1229837 Pamphlet (See Figure 1A) JP 2009-240590 A (see FIG. 1).

Claims (10)

In the sole structure of shoes,
A first plate disposed above;
A second plate disposed below and spaced apart from the first plate;
Each of the first and second plates is disposed in the vertical direction, and has an upper end connected to the first plate and a lower end connected to the second plate. A plurality of columnar members arranged at intervals,
Since the upper end of the columnar member is disposed at a position ahead of the lower end, the columnar member is inclined forward, and the second plate is inclined obliquely upward as it goes rearward. In addition to having an inclined portion, the lower end of the columnar member is connected to the inclined portion, and a gap is formed below the inclined portion of the second plate at a connection portion of the lower end of the columnar member. ,
A sole structure of a shoe characterized by that. In claim 1,
When the shoe lands, the columnar member elastically deforms the inclined portion of the second plate downward, and when the shoe detaches, the columnar member is oblique to the first plate via the upper end. An elastic repulsive force is acting forward,
A sole structure of a shoe characterized by that. In claim 1,
The first and second plates and the columnar members are all made of hard resin and are integrally molded.
A sole structure of a shoe characterized by that. In claim 1,
The second plate is a corrugated plate having a plurality of corrugated portions.
A sole structure of a shoe characterized by that. In claim 1,
A plurality of the gaps are provided corresponding to the respective columnar members,
A sole structure of a shoe characterized by that. In claim 1,
Below the second plate, there is provided a third plate that is spaced from the second plate, and the gap is formed by the second and third plates. Being
A sole structure of a shoe characterized by that. In claim 6,
The second and third plates are corrugated plates each having a plurality of corrugated portions.
A sole structure of a shoe characterized by that. In claim 7,
An upward bulging portion of the second plate and a downward bulging portion of the third plate are arranged to face each other vertically.
A sole structure of a shoe characterized by that. In claim 8,
The bulging part below the second plate and the bulging part above the third plate are connected,
A sole structure of a shoe characterized by that. In claim 1,
The sole structure is provided on the heel of the shoe,
A sole structure of a shoe characterized by that.

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