JP4906157B2 - Sole sole structure - Google Patents

Description

  The present invention relates to a sole structure for shoes, and in particular, a sole suitable for sports shoes, in which individual users can exchange shoe soles at low cost without impairing the cushioning function as shoes. Concerning the structure.

  For example, a shoe as disclosed in Japanese Patent Application Laid-Open No. 7-204007 has been proposed as a shoe that can be replaced. This shoe has a fixing base fixed to a heel part of a shoe sole, and a heel member that is detachably attached to the pedestal via a latch (see FIG. 1 and paragraphs [0013] to [0014]). reference).

  Further, in the shoe described in Japanese Patent Application Laid-Open No. 9-75107, a screw for inserting the shoe lower surface is provided, and the heel is detachably attached to the shoe lower surface by the screw (FIGS. 1 to 3). And paragraphs [0030] and [0032]).

In the above-mentioned Japanese Patent Application Laid-Open No. 7-204007, a fixing base is separately required for attaching the heel member to the shoe sole, so that the structure becomes complicated and expensive. Moreover, since a heel member is attached to a shoe sole via a fixed base, the cushioning property at the time of landing on the heel is lowered.

  Moreover, in what is shown in the said Unexamined-Japanese-Patent No. 9-75107, since it is necessary to replace the whole heel at the time of replacement | exchange of a heel, it becomes high cost and a user's burden is large.

  On the other hand, especially in sports shoes, the demands of users have been diversified recently, and shoes corresponding to differences in weight, running method, running posture and movement of individual users are required. However, if the lineup of shoes is subdivided, a large number of stocks will be held at manufacturers and stores, leading to increased costs. Further, if the user has to replace the shoes when the functions such as cushioning do not meet the user's preference after actually using the purchased shoes, the burden on the user is great.

  In addition, recently, for example, in marathons and walking competitions, there are competitions that run (or walk) several tens of kilometers a day, and more and more athletes who do not have sufficient training participate in such competitions. Yes. In such cases, in order to reduce the burden on the foot during the competition, the athlete may want to change to shoes with different cushioning properties, and in such cases, he / she must carry another shoe. Then, the burden on the competitors is large. In addition, for example, in climbing, a climber with higher reeding ability can walk more easily when climbing, and conversely, a climbing person with higher shock absorption can reduce the burden on the climber's legs. In such a case, if the climber wears different shoes for climbing and descending, it is necessary for the climber to prepare two types of shoes, which is a heavy burden on the climber.

  The present invention has been made in view of such a conventional situation, and the problem to be solved by the present invention is that an individual user can easily replace a shoe sole, and further, a cushion as a shoe. The present invention seeks to provide a shoe sole structure that allows individual users to exchange shoe soles at low cost without impairing the function of sex.

A sole structure for a shoe according to the invention of claim 1 includes a top plate made of a hard elastic member disposed above, a bottom plate disposed below the top plate, including at least one upper convex portion, and a front-rear direction of the shoe And a lower corrugated plate made of a hard elastic member having a wave shape proceeding to. The lower corrugated plate is disposed on the lower surface of the upper plate so that a part of the ridge line in the width direction of the upper convex portion of the lower corrugated plate directly contacts the lower surface of the upper plate, and the contact area between these two plates Are connected to each other via a fastener, and the lower corrugated plate is provided so as to be replaceable with respect to the upper plate by attaching and detaching the fastener.

  In the invention of claim 1, when an impact load acts on the lower corrugated plate from the ground contact surface when the shoe lands, the lower corrugated plate is deformed so that the wave shape of the lower corrugated plate becomes flat or flat. Absorbed and relaxed to ensure cushioning.

  In this case, when attaching the lower corrugated plate to the upper plate, the lower corrugated plate can be attached to the upper plate without using a mounting base such as a fixed base, so that the structure can be simplified and the cost can be reduced. Cushioning can be maintained. Further, in this case, when the sole is replaced, only the lower corrugated rate needs to be replaced without replacing both the upper plate and the lower corrugated plate, so that the cost can be further reduced and the burden on the user can be reduced.

  Moreover, in this case, a plurality of shoes with different functions can be obtained by changing the amplitude of the wave shape or adopting materials with different cushioning properties, coefficient of restitution or shock absorption as the lower corrugated plate for replacement. This eliminates the need for preparation and further reduces the burden on the user.

Furthermore, in this case, a part of the ridgeline of the wave-shaped upper convex portion of the lower corrugated plate is in contact with the upper plate, and the contact area is connected to each other via a fastener.

That is, in this case, the ridgeline of the upper convex portion of the wave shape of the lower corrugated plate is not in contact with the upper plate over the entire width direction.For example, the ridgeline of the upper convex portion of the lower corrugated plate is on the outer periphery of the foot. If the upper plate is brought into contact only at the corresponding position, the protrusion to the foot due to the impact load at the time of landing can be reduced.

According to a second aspect of the present invention, in the first aspect, a raised portion is integrally formed in a contact area of the lower surface of the upper plate with the upper convex portion of the lower corrugated plate.

In the invention of claim 3 , in claim 1, the wave shape of the lower corrugated plate has a plurality of upper protrusions in the front-rear direction, and at least some of the plurality of upper protrusions are interposed via fasteners. Connected to the top plate.

According to the invention of claim 3 , a part of the plurality of upper projections in the wave shape of the lower corrugated plate is connected to the upper plate via the fastener, and the remaining portions of the plurality of upper projections are the upper plate. When the load is not applied, the remaining portions of the plurality of upper protrusions in the wave shape of the lower corrugated plate slide along the lower surface of the upper plate without being constrained by the upper plate. Thereby, the large deformation | transformation of the front-back direction and an up-down direction of a lower corrugated plate becomes easy, and cushioning properties can be improved. In this case, shoes suitable for athletes with light weight can be realized.

  In addition, when all of the plurality of upper protrusions in the wave shape of the lower corrugated plate are connected to the upper plate via fasteners, the entire lower corrugated plate is constrained by the upper plate, and compression during load action is performed. Since the hardness is high, shoes suitable for heavy athletes can be realized.

According to a fourth aspect of the present invention, in the first aspect, the lower corrugated plate is provided in the heel region of the shoe, and has at least two downward convex bulges that bulge downward downward, and is adjacent in the front-rear direction. Each upper convex bulge has an upper convex bulge between each lower convex bulge, and each upper convex and upper convex bulge at the front and rear ends of the lower corrugated plate is connected to the upper plate via a fastener. It is detachable.

  In this case, it is possible to easily and inexpensively replace the shoe sole in the shoe heel region where the degree of wear is significant during use. Further, in this case, since the lower corrugated plate has a plurality of downward convex bulge portions, the cushioning property of the heel region of the shoe can be improved.

The top plate is as described in the invention of claim 5, as with the lower wavy plate may have a wavy shape that progresses in the longitudinal direction of the shoe. In this case, the cushioning property or flexibility of the shoe can be adjusted.

In the invention of claim 6 , in claim 5 , the wave shape of the upper plate has an opposite phase to the wave shape of the lower corrugated plate, and the lower convex portion of the wave shape of the upper plate and the wave shape of the lower corrugated plate At least a part of the upper protrusions of the first and second protrusions are fixed to each other via a fastener.

  In this case, a large spindle-shaped gap is formed between the upper convex portion of the upper plate and the lower convex portion of the lower corrugated plate, and when the impact load is applied during landing, the upper plate and the lower corrugated plate Since both are compressed and deformed, the cushioning property of the shoe can be improved. Also, in this case, the thrust from the lower corrugated plate at the time of landing acts on the lower convex part between the upper convex parts adjacent to each other in the front-rear direction on the upper plate. it can. Such a sole structure is suitable particularly for the heel region of a shoe.

According to a seventh aspect of the present invention, in the fifth aspect , the wave shape of the upper plate has the same phase as the wave shape of the lower corrugated plate, the upper convex portion of the wave shape of the upper plate and the wave shape of the lower corrugated plate. At least some of the upper protrusions are fixed to each other via a fastener.

  In this case, since each upper convex part and each lower convex part of an upper plate and a lower corrugated plate are arrange | positioned in the same position of the front-back direction, the flexibility of shoes can be improved. Such a sole structure is suitable for the forefoot region of shoes.

  According to an eighth aspect of the present invention, in the first aspect, the upper plate has a corrugated shape that advances in the width direction of the shoe, and the upper convex portion of the upper corrugated lower convex portion and the lower corrugated plate corrugated upper convex portion. At least a part of the contact area is fixed to each other via a fastener.

  In this case, the ridges of the corrugated shapes of the upper plate and the lower corrugated plate intersect each other between the upper plate and the lower corrugated plate, so that the bending of the shoe can be restricted. Such a sole structure is suitable for the middle foot region of a shoe that requires a shank effect.

  In the invention of claim 9, in claim 1, the wave shape of the upper plate is composed of a combination of both a wave shape that advances in the front-rear direction of the shoe and a wave shape that advances in the width direction of the shoe.

  In this case, in the portion of the upper plate having a wave shape that advances in the front-rear direction of the shoe, the shoe cushioning property can be improved if the phase is opposite to that of the lower corrugated plate according to the phase, and the same as the lower corrugated plate. If it is a phase, the flexibility of shoes can be improved. In addition, in the upper plate, the flexibility of the shoe can be restricted at a portion having a wave shape that proceeds in the width direction of the shoe.

  According to a tenth aspect of the present invention, in the first aspect, the fastener includes a male screw portion that is inserted through a through-hole formed in the lower corrugated plate from below, and a female screw that is provided in the upper plate and is screwed with the male screw portion. It consists of a part.

  In this case, when the lower corrugated plate is attached to the upper plate, the lower corrugated plate is disposed on the lower surface of the upper plate, and the male screw portion of the fastener is moved from below the lower corrugated plate to the through hole of the lower corrugated plate. The male screw portion may be screwed by inserting the male screw portion into the female screw portion of the upper plate. Further, when removing the lower corrugated plate from the upper plate, the male screw portion of the fastener may be loosened and removed from the female screw portion of the upper plate.

  By the way, in the thing of the above-mentioned Unexamined-Japanese-Patent No. 9-75107, the head part of a screw is arrange | positioned inside shoes and the external thread part of a screw is screwing together with the internal thread part formed in the heel upper surface. In the shoe, an inner shoe sole (that is, an insole) is disposed on the head of the screw. In this case, since the screw head is located immediately below the insole, when the shoe is worn, the wearer feels the screw head on the sole, resulting in poor foot contact. Also, in this case, when replacing the heel, it is necessary to turn (or remove) the insole inside the shoe and loosen the screw, and after replacing the heel, it is necessary to return the insole to its original position. Yes, work is troublesome.

On the other hand, according to the invention of claim 10 of the present application, since the male screw portion of the fastener is inserted into the through hole of the lower corrugated plate from below the lower corrugated plate, the fastening and relaxation of the male screw portion are It may be performed from the outside of the shoe, and it is not necessary to remove the insole from the inside of the shoe and operate the male screw portion. Thereby, the fastening and loosening operations of the fastener can be easily performed, and the lower corrugated plate can be easily attached and detached. In addition, since the head of the male screw portion is not disposed inside the shoe, the feeling of foot contact when wearing the shoe is not impaired.

  According to an eleventh aspect of the present invention, in the first aspect, the fastener allows the relative movement in the front-rear direction of the upper plate and the lower corrugated plate.

  In this case, since the lower corrugated plate can move in the front-rear direction with respect to the upper plate, the lower corrugated plate can be easily deformed in the front-rear direction and the vertical direction, and the cushioning property can be improved.

According to a twelfth aspect of the invention, in the eleventh aspect , the fastener is formed in the lower corrugated plate and penetrates a long hole-like through hole extending in the front-rear direction, and is formed in the upper plate and the male screw portion. Is formed from a female screw portion to which the screw is engaged.

  In this case, the lower corrugated plate moves in the front-rear direction with respect to the upper plate by sliding the male screw portion of the fastener in the front-rear direction along the long hole-shaped through hole of the lower corrugated plate.

  According to a thirteenth aspect of the present invention, in the first aspect, the fastener is formed on one of the upper plate or the lower corrugated plate and the other of the upper plate or the lower corrugated plate, It is comprised from the latching groove part which can be detachably latched.

  According to the invention of claim 13, the lower corrugated plate is attached to the upper plate by the latching projection being latched in the latching groove, and the lower corrugated plate is detached from the latching groove by the latching projection. Is removed from the top plate. In this case, the work of tightening or loosening the screws is not necessary, so that the lower corrugated plate can be attached and detached more easily.

  According to the fourteenth aspect of the present invention, in the first aspect, the fastening portion of the upper plate and the lower corrugated plate by the fastener is disposed on the outer peripheral side of the upper plate and the lower corrugated plate.

  In this case, the load from the ground contact surface acts on the outer peripheral portion of the upper plate and does not act on the central portion of the upper plate.

According to a fifteenth aspect of the present invention, in the third aspect , the contact area between at least a part of the wave-shaped upper convex portion of the lower corrugated plate and the upper plate extends in the front-rear direction of the shoe.

  In this case, when the impact load from the ground plane acts on the upper plate via the lower corrugated plate, the impact load can be distributed in the contact area extending in the front-rear direction, so that the upper plate feels to be pushed up to the foot. Can be reduced. In addition, in this case, since the contact area extends not in the shoe width direction but in the shoe front-rear direction, by placing the contact area not on the center part of the upper plate but on the outer peripheral side, the impact load is reduced. It can avoid acting on the back center.

According to a sixteenth aspect of the present invention, in the first aspect, an intermediate corrugated plate made of a hard elastic member having a corrugated shape in the front-rear direction of the shoe along the corrugated shape of the lower corrugated plate is mounted on the upper surface of the lower corrugated plate The intermediate corrugated plate is detachably provided to the upper plate together with the lower corrugated plate via a fastener .

  In this case, since an intermediate corrugated plate is provided between the upper corrugated plate and the lower corrugated plate, the intermediate corrugated plate is made of a material different from that of the lower corrugated plate, or the thickness of the sole structure is changed. Cushioning properties (ie shock absorption and resilience) as a body can be adjusted.

  For example, when climbing, prepare two types of intermediate corrugated plates with different rigidity for ascending and descending, and properly use the intermediate corrugated plates for ascending and descending. The load on the wearer's foot can be reduced by using the one with higher shock absorption when used and down. Alternatively, two types of intermediate corrugated plates having different thicknesses of the heel portion are prepared for up and down use, and the intermediate corrugated plate is properly used for up and down. By using the one, and using the one with the thinner thickness of the heel part or descending according to the slope of the mountain, the wearer can easily walk.

  Furthermore, in this case, not only can the intermediate corrugated plate be replaced at the same time when the lower corrugated plate is replaced, but also the lower corrugated plate or the intermediate corrugated plate can be replaced individually. You can easily make shoes according to your preference.

  In the invention of claim 17, in claim 16, the intermediate corrugated plate is composed of an inner corrugated plate portion and an outer corrugated plate portion respectively disposed on the inner shell side and the outer shell side of the shoe. The inner shell side corrugated plate portion and the outer shell side corrugated plate portion are separated in the shoe width direction.

  In this case, the inner corrugated plate portion and the outer corrugated plate portion can be made of materials having different rigidity from each other, so that the compression hardness at the time of landing between the inner shell side and the outer shell side of the shoe. Can be changed easily. As a result, it is possible to easily manufacture a shoe corresponding to over-pronation or over-suppression of the wearer's foot.

According to an eighteenth aspect of the present invention, in the first aspect , a gap is formed between the upper plate and the lower corrugated plate, and a soft elastic member is inserted into the gap.

  In this case, when the lower corrugated plate is elastically deformed, the soft elastic member in the gap is also elastically deformed. Therefore, as the soft elastic member, for example, synthetic rubber or synthetic resin excellent in shock absorption or a foam thereof By adopting etc., cushioning can be adjusted.

As described above, according to the sole structure according to the present invention, the upper plate and the lower corrugated plate disposed below the upper plate and detachable from the upper plate via the fastener are provided. When attaching the lower corrugated plate to the upper plate, the lower corrugated plate can be attached to the upper plate without using a mounting base such as a fixed base, simplifying the structure, reducing costs, and maintaining cushioning it can. Further, in this case, when exchanging the sole, it is only necessary to replace the lower corrugated plate without exchanging both the upper plate and the lower corrugated plate, so that the cost can be further reduced and the burden on the user can be reduced. Moreover, in this case, a plurality of shoes with different functions can be obtained by changing the amplitude of the wave shape or adopting materials with different cushioning properties, coefficient of restitution or shock absorption as the lower corrugated plate for replacement. This eliminates the need for preparation and further reduces the burden on the user.

(A) is a bottom view of the sole structure for shoes according to the first embodiment of the present invention, and (b) is a side view of the outer side of the sole structure of (a). FIG. 2 is a sectional view taken along the line II-II (center line in the front-rear direction of the shoe) of FIG. FIG. 2 is an exploded view of a rear foot region of the sole structure of FIG. 1. It is the IIIA-IIIA sectional view taken on the line of FIG. (A) is a bottom view of a sole structure for shoes according to a second embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction center line) sectional drawing, Comprising: The upper plate of a sole structure is shown the example provided only in the shoe heel part. (A) is a bottom view of a sole structure for shoes according to a second embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction centerline) sectional drawing, Comprising: The example which the upper plate of the sole structure was provided only in the shoe forefoot part is shown. (A) is a bottom view of the sole structure for shoes according to the third embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction centerline) sectional drawing, Comprising: The lower corrugated plate has shown the example provided separately in the heel part and forefoot part of shoes. (A) is a bottom view of the sole structure for shoes according to the third embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction centerline) sectional drawing, Comprising: The lower corrugated plate has shown the example extended from the heel part of shoes to the middle leg part to the front leg part. It is a top view of the lower corrugated plate in the sole structure of FIG. It is a perspective view of the lower corrugated plate in the sole structure of FIG. (A) is a bottom view of a sole structure for shoes according to a fourth embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction center line) sectional drawing, Comprising: The lower corrugated plate and the upper plate have shown the example provided separately in the heel part and front leg part of shoes. It is a schematic block diagram of the upper plate and the lower corrugated plate in the sole structure for shoes by the 5th Example of this invention, Comprising: The wave shape of an upper plate has shown the example of the wave shape of a lower corrugated plate, and an example . It is a schematic block diagram of the upper plate and the lower corrugated plate in the sole structure for shoes by the 5th Example of this invention, Comprising: The wave shape of an upper plate has shown the example of the same phase as the wave shape of a lower corrugated plate. . FIG. 10 is a schematic configuration diagram of an upper plate and a lower corrugated plate according to a fifth embodiment of the present invention, showing a case where the upper plate is flat. FIG. 11 is a schematic partial view of an upper plate and a lower corrugated plate in a shoe sole structure according to a sixth embodiment of the present invention, wherein the upper plate has a wave shape that advances in the width direction and the lower corrugated plate is in the front-rear direction. An example having a traveling wave shape is shown. It is the XIII-XIII sectional view taken on the line of FIG. (A) is a bottom view of a sole structure for shoes according to a seventh embodiment of the present invention, (b) is a side view of the outer side of the sole structure of (a), and (c) is a C- of (a). It is C line (shoes front-back direction center line) sectional drawing, Comprising: The upper plate has shown the example which has the composite wave shape which advances to both the front-back direction and the width direction of shoes. 14A is a bottom view of the upper plate in the sole structure of FIG. 14, FIG. 14B is a side view of the outer side of the upper plate of FIG. 14A, and FIG. FIG. FIG. 16 is a perspective view of an upper plate in the sole structure of FIG. 15. FIG. 15 is a sectional view taken along line XVI-XVI in FIG. It is a schematic block diagram of the upper plate and lower corrugated plate in the sole structure for shoes by the 8th Example of this invention, Comprising: The case where an upper plate is flat is shown. It is a schematic block diagram of the upper plate and the lower corrugated plate in the sole structure for shoes by the 8th Example of this invention, Comprising: The wave shape of an upper plate has shown the example of the wave shape of a lower corrugated plate and an antiphase . It is a schematic block diagram of the upper plate and the lower corrugated plate in the sole structure for shoes by the 8th Example of this invention, Comprising: The wave shape of an upper plate has shown the example of the same phase as the wave shape of a lower corrugated plate. . It is an expanded sectional view of the screw attachment part of the lower corrugated plate in the sole structure for shoes by the 9th Example of this invention. It is a figure which shows the modification of the fastener of the upper plate and lower corrugated plate in the sole structure for shoes by the 10th Example of this invention. It is an exploded view of the rear foot region of the sole structure for shoes according to the eleventh embodiment of the present invention. FIG. 23 is a plan view of an intermediate corrugated plate in the sole structure of FIG. 22. It is a shoe front-back direction centerline sectional drawing of the sole structure for shoes by the 11th Example of this invention. In the sole structure for shoes by the 12th Example of this invention, it is the perspective view which looked at the lower corrugated plate from upper direction.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<First embodiment>
1 to 3A show a shoe sole structure according to a first embodiment of the present invention. In these drawings, the same reference numerals indicate the same or corresponding parts.

  As shown in FIGS. 1 and 2, the sole structure 1 includes an upper plate 2 made of a hard elastic member that extends from a heel part H of a shoe through a middle foot part M to a front foot part F, and a shoe. The lower corrugated plate 3 made of a hard elastic member is provided below the upper plate 2 in the flange portion H.

  The upper plate 2 is disposed in the upper position of the sole structure in the heel part H and is formed in a flat shape. In the forefoot part F, the upper plate 2 is disposed in the lower position of the sole structure. The portion is formed flat (see FIG. 2), and the inner side and the outer side have a wave shape that advances in the front-rear direction (see FIG. 1B). In FIG. 1B, only the wave shape of the outer side portion of the upper plate 2 is shown.

  The lower corrugated plate 3 has a wave shape that advances in the front-rear direction of the shoe (the vertical direction in FIGS. 1 and 2). Here, the lower corrugated plate 3 bulges downward in a convex shape and is adjacent to the two lower convex bulge portions 30 and 31 adjacent in the front-rear direction, and between these lower convex bulge portions 30 and 31. An upward convex bulging portion 32 that bulges upward is provided. Further, upper and lower convex portions (or upward convex bulging portions) 33 and 34 are provided at the front and rear ends of the lower corrugated plate 3. With this configuration, a gap C is formed between the lower corrugated plate 3 and the upper plate 2.

  In the forefoot portion F of the shoe, the outsole 4 is fixed to the lower surface of the upper plate 2 by bonding or the like. A number of anti-slip grooves 4 a (not shown in FIG. 1A) are formed on the lower surface of the outsole 4. Outsole 5 and 6 are fixed to the lower surface of the lower corrugated plate 3 by adhesion or the like in the heel portion H of the shoe. Similarly, a number of anti-slip grooves 5a and 6a (not shown in FIG. 1A) are formed on the lower surfaces of the outsole 5 and 6 as well. The outsole 5 is disposed on the front end side of the buttock H, the outsole 6 is disposed on the rear end side of the buttock H, and between the rear end 50 of the outsole 5 and the front end 60 of the outsole 6 A gap 7 in the front-rear direction is formed. The gap 7 corresponds to the position of the upper convex bulging portion 32 of the lower corrugated plate 3. Instead of fixing the outsole 4, 5, 6 to the lower surfaces of the upper plate 2 and the lower corrugated plate 3, an outsole design may be directly formed on the lower surfaces of the upper plate 2 and the lower corrugated plate 3.

  On the upper surface of the upper plate 2, a midsole 8 made of a soft elastic member, which extends from the heel part H of the shoe to the front foot part F through the middle foot part M, is mounted. The upper plate 2 is fixed to the lower surface of the midsole 8 by adhesion or the like. The midsole 8 is in contact with the sole of the wearer via an insole or the like (not shown), and the upper side of the sole contact surface 8a on both sides in the width direction of the sole contact surface 8a (right in FIG. 2). And a pair of left and right hoisting portions 8b bonded to the lower portions of the left and right side surfaces of the shoe upper (not shown).

  The upper plate 2 and the lower corrugated plate 3 are made of, for example, a thermoplastic material such as thermoplastic polyurethane (TPU) or polyamide elastomer (PAE), or a thermosetting material such as epoxy resin or unsaturated polyester resin. Moreover, you may make it integrally mold using an ethylene-vinyl acetate copolymer (EVA), rubber, etc.

  The midsole 8 is, 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, butadiene rubber, chloroprene rubber, or the like. Made of rubber material and its foam.

  As shown in FIG. 3, the lower corrugated plate 3 is detachably attached to the upper plate 2 by a plurality of (here, six) screws (fasteners) 10. The screw 10 has a head portion 10a in which a minus groove is formed, and a male screw portion 10b extending below the head portion 10a. Here, as the screw 10, a round slotted screw with a minus groove is taken as an example, but other screws may be used.

The lower corrugated plate 3 has a plurality of (here, six) through holes 3a. Two each of these through holes 3 a are provided on the front end side, the front-rear direction center portion, and the rear end side of the lower corrugated plate 3. The through hole 3a on the front end side is disposed in front of the outsole 5, the through hole 3a in the center in the front-rear direction is disposed in the gap 7 between the outsole 5 and 6, and the through hole 3a on the rear end side is It is arranged at the rear part of the sole 6. On the rear end side of the outsole 6, a through hole 6 b aligned with the through hole 3 a of the lower corrugated plate 3 in the vertical direction is formed. Moreover, each through-hole 3a and 6b is provided along the outer periphery of the heel part H of shoes.

  On the lower surface of the upper plate 2, there are a plurality (six here) female screw portions (fasteners) 2 a that are respectively arranged at positions corresponding to the respective through holes 3 a of the lower corrugated plate 3 and into which the screws 10 can be screwed. Is provided. As shown in FIG. 3A, a nut member 11 having a female screw portion 2 a is embedded in the upper plate 2. The nut member 11 is attached to the upper plate 2 by, for example, insert molding. Moreover, you may make it fix to the upper plate 2 using a rivet as a nut member. Alternatively, the female screw portion 2a may be integrally formed with the upper plate 2 itself without using a nut member.

A female screw portion 2 a at the center in the front-rear direction of the upper plate 2 is provided on a raised portion 20 formed on the upper plate 2. The raised portion 20 corresponds to the position of the upper convex bulge portion 32 of the lower corrugated plate 3. Further, the female screw portion 2 a at the rear end of the upper plate 2 is provided on a raised portion 21 formed on the upper plate 2. Ridges 21 corresponds to the position of the upper-side protrusion 34 of the lower wavy plate 3. Each ridge 20 and 21, the abutment surface 20a of the upper surface of the lower portion wavy plate 3 abuts, 21a are formed respectively.

With this configuration, the lower wavy plate 3, the upper projecting portion of the front and rear ends of the lower wavy plate 3 (or upwardly convexly curved portions) 33, 34 and the upwardly convexly curved portion 32 on the central portion plate 2 Are connected to the upper plate 2 via the screws 10 in contact with the lower surface and the bulging portions 20, 21.

  In the sole structure 1 configured as described above, when the lower corrugated plate 3 is attached to the upper plate 2, the lower corrugated plate 3 is formed by tightening the screws 10 without using a mounting base such as a fixed base. Since it is attached to the upper plate 2, the structure can be simplified, the cost can be reduced, and the cushioning property can be maintained. When exchanging the sole, it is only necessary to replace only the lower corrugated rate 3 by loosening and removing the screw 10 without exchanging both the upper plate 2 and the lower corrugated plate 3. Can be reduced. At this time, when the outsole design is directly formed on the lower surface of the lower corrugated plate 3 without providing the outsole 5, 6 on the lower surface of the lower corrugated plate 3, the number of parts can be reduced, and the sole structure 1 Can be assembled more easily.

  In this case, when replacing the sole, there is no need to remove the insole from the inside of the shoe and attach the screw, and the male screw portion 10b of the screw 10 from the lower surface side of the lower corrugated plate 3 (that is, the outsole side outside the shoe). It is only necessary to insert a so that the sole can be easily replaced. At this time, since the head 10a of the screw 10 is not disposed inside the shoe, the feeling of foot contact when the shoe is worn is not impaired.

  In addition, in this case, it is possible to achieve a strong connection using screws having a small cross-sectional area compared to the case where the upper and lower plates are connected using a columnar elastic block member as described in Japanese Patent No. 4020953. Therefore, the deformation can be performed smoothly and the cushioning property can be improved without adversely affecting the deformation of each wave shape of the upper and lower plates. In this case, since the load can be directly dispersed at the joint surfaces of the upper and lower plates, the stability can be improved as compared with the one using the elastic deformation of the columnar elastic block member. In addition, since the upper and lower plates are molded, a simple mold structure with two faces can be adopted, so that manufacturing costs can be reduced. It should be noted that not only when the upper and lower plates extend over the entire length of the shoe, but also over the entire length of the shoe (for example, the upper and lower plates are divided at the front and back of the shoe and arranged at intervals in the front and rear direction). Even when the shoes are partially overlapped in the front and back), it is possible to use this for shoes of different sizes.

  Further, in this case, a plurality of shoes having different functions can be obtained by changing the amplitude of the wave shape or adopting materials having different cushioning properties, coefficient of restitution or shock absorption as the lower corrugated plate 3 for replacement. Since there is no need to prepare the user, the burden on the user can be further reduced.

  In this case, the lower corrugated plate 3 is attached to the upper plate 2 via raised portions 20 and 21 arranged on the outer peripheral side of the lower surface of the upper plate 2. As for the ridgeline in the width direction of the convex bulge and the upper convex, only the inner side and the outer side are in contact with the upper plate 2, and the central part of the heel is not in contact with the upper plate 2, It is away from the plate 2. For this reason, the impact load acting on the lower corrugated plate 3 when the shoe is landing on the shoe is transmitted to the outer peripheral side portion of the upper plate 2 through the raised portions 20 and 21 and transmitted to the central portion of the upper plate 2. Not. Thereby, at the time of landing on the heel, the wearer can be prevented from being pushed up to the heel center.

  If the lower corrugated plate 3 is provided on the heel of the shoe as in the first embodiment, it is easy and inexpensive to replace the sole of the heel of the shoe that is extremely worn during use. You can do it.

  Further, in a shoe equipped with such a sole structure 1, when an impact load is applied to the lower corrugated plate 3 from the ground surface during landing, the corrugated shape of the lower corrugated plate 3 is deformed to be flat or flatter. And since the space | gap C acts as a cushion hole, an impact load is absorbed and relieved and cushioning properties are ensured.

<Second embodiment>
In the first embodiment, the example in which the upper plate 2 extends from the heel portion H of the shoe to the middle foot portion M to the front foot portion F is shown, but the application of the present invention is not limited to this. The upper plate 2 may be disposed only on the heel portion of the shoe as shown in FIG. 4, or may be disposed only on the forefoot portion of the shoe as shown in FIG. 4 and 5, (a) is a bottom view of the sole structure, (b) is a side view of its outer side, and (c) is a cross-sectional view taken along the line CC (center line in the front-rear direction) of (a). (The same applies to FIGS. 5 to 9 below). In these drawings, the same reference numerals as those in the first embodiment denote the same or corresponding parts.

Fig In 4, the heel front end of the upper plate 2 is formed with a raised portion 22 having a female threaded portion, the upper convex portion of the lower wavy plate 3 ₁ of heel front end abuts against the raised portion 22 , And is connected to the raised portion 22 via a screw 10 that is screwed into the female screw portion.

In FIG. 5, a plurality of raised portions 23 are formed along the outer periphery of the front foot portion of the upper plate 2, and these raised portions 23 have female screw portions into which the screws 10 are screwed. Yes. _On the front foot portion of the lower corrugated plate 32 disposed below the upper plate 2, a wave shape is formed that advances in the front-rear direction. Lower wavy plate 3 ₂ wave form includes a plurality of downwardly convexly curved portions 35 which bulge convexly downward, on which is formed between the downwardly convexly curved portions 35 adjacent in the longitudinal direction a convex Jo bulging portion 36, and an upper convex portion formed on the front and rear ends of the lower wavy plate 3 ₂ (or upwardly convexly curved portions) and a 37.

  In the example shown in FIGS. 4 and 5, each of the raised portions 20-on the lower surface of the upper plate 2 with which the upper convex bulging portions 32, 36 and the upper convex portions 33, 34, 37, 38 abut on the lower corrugated plate 3. 23 extends in the front-rear direction, so that when the impact load from the grounding surface acts on the upper plate 2 via the lower corrugated plate 3, the impact load can be dispersed by the ridges 20 to 23. The feeling of pushing up from the plate 2 to the foot can be reduced.

<Third embodiment>
In the first and second embodiments, the example in which the lower corrugated plate 3 is disposed only on the heel portion of the shoe or only on the forefoot portion is shown, but the application of the present invention is not limited to this. As shown in FIG. 6, the lower corrugated plate 3 may be provided on both the heel part and the forefoot part, or as shown in FIG. It may be extended to. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts.

6, the upper plate 2 is fart the midfoot from the heel portion are extended to the forefoot, the downward upper plate 2 in the heel portion of the shoe, like the lower wavy plate and FIG 3 ₁ There is provided, in the lower Oite upper plate 2 in the forefoot, Fig. 5 and similar lower wavy plate 3 ₂ are disposed.

In this case, changing the hardness between the lower wavy plate 3 ₁ and 3 _2, for example, the hardness of the lower wavy plate 3 ₁ is made higher than the hardness of the lower wavy plate 3 _2, and the heel portion of the shoe stiffer The stability of the buttocks can be improved and the flexibility of the forefoot can be improved by softening the forefoot of the shoe.

  In FIG. 7, the lower corrugated plate 3 has a downward convex bulging portion 39 disposed on the middle foot portion of the shoe, and the heel portion of the shoe is interposed via the downward convex bulging portion 39. The disposed lower corrugated plate 3 and the lower corrugated plate 3 disposed on the forefoot are integrally connected.

  As shown in FIG. 7A and FIG. 7B, on the upper surface of the lower corrugated plate 3, the position corresponding to the upper convex portion of the corrugated front and rear ends of the lower corrugated plate 3, and the corrugated upper convex bulges At corresponding positions, the contact portions 32 to 34 and 36 to 38 having substantially flat contact surfaces that contact the raised portions 20 to 23 formed on the lower surface of the upper plate 2 are the outer periphery of the lower corrugated plate 3. It is provided along. A through hole 3a through which the male screw portion of the screw 10 is inserted is formed in these contact portions 32 to 34 and 36 to 38.

<Fourth embodiment>
In the first to third embodiments, the upper plate 2 extends from the buttocks to the forefoot through the middle foot, or is disposed only on the buttocks or only on the forefoot. However, as shown in FIG. 8, the present invention can also be applied to the case where the upper plate 2 is disposed on both the heel part and the front foot part and is separated between the heel part and the front foot part. In the figure, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts.

8, the upper plate 2 has an upper plate 2 ₁ disposed in the heel portion, and an upper plate 2 ₂ disposed at a forefoot. On the other hand, in the midfoot, the midsole 8 has a convex portion 80 is formed to protrude downward, the protrusion 80 is disposed in a gap between the upper plate 2 ₁ and 2 _2.

In this case, changing the hardness between the upper plates 2 ₁ and 2 _2, for example, the hardness of the upper plate 2 ₁ is made higher than the hardness of the upper plate 2 _2, the heel and the heel portion of the shoe stiffer The stability can be improved and the flexibility of the forefoot can be improved by softening the forefoot of the shoe.

<Fifth embodiment>
In the first embodiment, in the forefoot part, the central portion in the width direction of the upper plate 2 is formed flat, and the inner side and the outer side have a wave shape that advances in the front-rear direction. However, the upper plate 2 may have a wave shape that advances in the front-rear direction over the entire width direction (that is, in the entire area of the upper plate 2).

  9 and 10 show a schematic configuration of a sole structure having such an upper plate. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. A lower corrugated plate 3 is disposed below each upper plate 2.

  In FIG. 9, the wave shape of the upper corrugated plate 2 has an opposite phase to the wave shape of the lower corrugated plate 3. A wave-shaped upward convex bulge 2B of the plate 2 is disposed. Then, in the wave shape of the upper corrugated plate 3, the lower convex bulge portions 2 A between the upper convex bulge portions 2 B adjacent to each other in the front and rear direction (left and right direction in FIG. 9) in the wave shape of the upper plate 2 The upper convex bulges 3B between the lower convex bulges 3A adjacent to each other in the direction (the left-right direction in the figure) are connected by screws 10.

  In FIG. 10, the wave shape of the upper plate 2 is in phase with the wave shape of the lower corrugated plate 3. A wave-like downward convex bulging portion 2A of the plate 2 is disposed. And in the wave shape of the upper plate 2, the lower surface of each upper convex bulge part 2B between each lower convex bulge part 2A adjacent in the front-rear direction (left and right direction in FIG. 10), and the wave shape of the lower corrugated plate 3 In FIG. 2, the upper convex bulges 3B between the lower convex bulges 3A adjacent to each other in the front-rear direction (the left-right direction in the figure) are connected by screws 10.

  In the case of FIG. 9, a large spindle-shaped gap C is formed between the upper convex bulging portion 2B of the upper plate 2 and the lower convex bulging portion 3A of the lower corrugated plate 3. When an impact load is applied, both the upper plate 2 and the lower corrugated plate 3 are compressed and deformed, so that the cushioning property of the shoe can be improved. Further, in this case, the protrusion from the lower corrugated plate 3 at the time of landing acts on the lower convex bulge portion 2A between the adjacent upper convex bulge portions 2B of the upper plate 2, so the upper plate 2 Can be dispersed and mitigated. Such a sole structure is suitable particularly for the heel region of a shoe.

  In the case of FIG. 10, the gap C ′ formed between the lower convex bulge 2A of the upper plate 2 and the lower convex bulge 3A of the lower corrugated plate 3 is small, but the upper plate 2 and the lower corrugated The upper convex bulges 2B and 3B and the lower convex bulges 2A and 3A of the plate 3 are arranged at the same position in the front-rear direction. In other words, the upper plate Since the corresponding convex bulges of 2 and the lower corrugated plate 3 are arranged in the same direction, the flexibility of the shoe when the load moves forward after landing can be improved. Such a sole structure is suitable for the forefoot region of shoes.

On the other hand, when the upper plate 2 has a flat shape, as shown in FIG. 11, each upper convex bulge 3 </ b> B of the lower corrugated plate 3 is screwed on the lower surface 2 </ b> C of the upper plate 2. It is connected through. At this time, the gap C ₀ formed between the upper plate 2 and the lower corrugated plate 3 is smaller than the gap C in FIG. 9 and larger than the gap C ′ in FIG. In this case, the cushioning property at the time of landing is superior to that of FIG. 10 but is inferior to that of FIG. 9, and the flexibility after landing is superior to that of FIG. 9 but is inferior to that of FIG.

<Sixth embodiment>
In the fifth embodiment, the case where both the upper plate 2 and the lower corrugated plate 3 have a wave shape proceeding in the shoe front-rear direction has been described as an example, but the application of the present invention is not limited to this.

  12 and 13 show an upper plate and a lower corrugated plate of a sole structure according to a sixth embodiment of the present invention. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. As shown in FIG. 12, the upper plate 2 has a wave shape that proceeds in the shoe width direction (arrow direction), and the wave shape includes the downward convex bulging portions 2 </ b> A and the upward convex shape that are alternately arranged. It is comprised from the bulging part 2B. The lower corrugated plate 3 has a wave shape that advances in the front-rear direction of the shoe (in the direction of the arrow), and the wave shape is composed of lower convex bulge portions 3A and upper convex bulge portions 3B that are alternately arranged. Has been.

  As shown in FIG. 13, the ridge line L of the lower convex bulge portion 2 </ b> A of the upper plate 2 is intermittently in contact with the upper convex bulge portion 3 </ b> B of the lower corrugated plate 3. Further, some of these contact portions are connected to each other via a screw 10. Similarly, the ridge line L ′ of the upper convex bulge 3 </ b> B of the lower corrugated plate 3 is intermittently in contact with the lower convex bulge 2 </ b> A of the upper corrugated plate 2.

  In this case, the corrugated ridgelines L and L ′ of the upper plate 2 and the lower corrugated plate 3 intersect each other between the upper plate 2 and the lower corrugated plate 3, thereby bending the sole structure of the shoe. Can be regulated. Such a sole structure is suitable for the middle foot region of a shoe that requires a shank effect.

<Seventh embodiment>
As shown in FIGS. 14 to 16, the present invention can also be applied to the case where the upper plate 2 has a complex wave shape that advances not only in the front-rear direction but also in the width direction. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts.

  The sole structure 1 shown in FIG. 14 substantially corresponds to the sole structure 1 shown in FIG. 7 of the third embodiment in which the upper plate 2 has a complex wave shape. As shown in FIGS. 14 and 15, the upper plate 2 has a wave shape that extends in the front-rear direction from the heel portion of the shoe to the middle foot portion toward the front foot portion over the entire width direction. Further, as shown in FIG. 16, the upper plate 2 has a wave shape that proceeds in the width direction of the shoe. Therefore, in this case, the wave shape formed on the upper plate 2 advances in the width direction of the shoe while proceeding in the front-rear direction of the shoe.

  As shown in FIGS. 15 and 15A, on the lower surface of the upper plate 2, a position corresponding to the upper convex portion at the front and rear ends of the upper plate 2, and a position corresponding to each wave-shaped upward convex bulge portion of the front foot portion. , And a position corresponding to each wave-like downward convex bulging part of the hind leg part, a substantially flat shape that comes into contact with the contact parts 32 to 34 and 36 to 38 formed on the upper surface of the lower corrugated plate 3. The raised portions 20 to 23 having the contact surface are provided along the outer periphery of the upper plate 2. These raised portions 20 to 23 are formed with a female screw 2a into which the male screw portion 10b of the screw 10 is screwed.

  As shown in FIG. 14, regarding the wave shape in the front-rear direction of the upper plate 2, the wave shape of the lower corrugated plate 3 is opposite to the wave shape of the lower corrugated plate 3 in the buttocks. It is in phase with the shape.

  In this case, a large gap is formed between the upper plate 2 and the lower corrugated plate 3 in the collar portion, but at this time, the wave shape of the upper plate 2 extends not only in the front-rear direction but also in the width direction. Since it has a wave shape, the amount of compressive deformation of the upper plate 2 is suppressed. For this reason, at the time of landing on the shoe, the cushioning property of the heel portion is lower than that when the wave shape of the upper plate 2 extends only in the front-rear direction (see FIG. 9), but the stability is improved. .

  Further, in the forefoot portion, the upper plate 2 and the lower corrugated plate 3 have the same phase wave shape. At this time, the wave shape of the upper plate 2 extends in the width direction as well as in the front-rear direction. Since it has a shape, the flexibility of the upper plate 2 is suppressed. For this reason, when the forefoot part of the shoe is bent and taken off, the flexibility of the forefoot part is smaller than that when the wave shape of the upper plate 2 extends only in the front-rear direction (see FIG. 10). As a result, the so-called snappy at the time of kicking is improved.

  In the seventh embodiment, with respect to the wave shape of the upper plate 2, the wave shape that advances in the front-rear direction and the width direction advances across the entire length of the upper plate 2 in the front-rear direction and the width direction (that is, the entire area of the upper plate 2). Although the example in which the wave shapes are combined as a composite shape has been shown, in the present invention, the wave shape in the front-rear direction and the wave shape in the width direction in the upper plate 2 are unevenly distributed in the region of the upper plate 2, respectively. It can also be applied to.

  In this case, in the portion of the upper plate 2 having a wave shape that advances in the front-rear direction of the shoe, if the phase is opposite to that of the lower corrugated plate 3, the cushioning property of the shoe can be improved. If it is in phase, the flexibility of the shoe can be improved. Further, in the upper plate 2, the flexibility of the shoe can be restricted at the portion having a wave shape that proceeds in the width direction of the shoe.

  Further, in FIG. 15, the raised portions 20 to 23 may extend long in the front-rear direction of the shoe, and at this time, the contact portions 32 to 34 of the lower corrugated plate 3 corresponding to the raised portions 20 to 23. 36 to 38 (see FIG. 7A) may extend long in the shoe width direction.

  At the time of joining the upper plate 2 and the lower corrugated plate 3, each contact region of the corresponding raised portion and the contact portion becomes a joining surface. At this time, even if any of the joining surfaces is not fastened by the screw 10, By extending the protruding portion and the abutting portion in a direction crossing each other, it is possible to prevent any of the protruding portion and the abutting portion from slipping off from the other when the shoe is used. Further, in this case, the raised portions 20 to 23 of the upper plate 2 restrict the deformation of the upper plate 2 in the front-rear direction, and the abutting portions 32 to 34 and 36 to 38 of the lower plate 3 correspond to the lower plate 3. Since the deformation in the width direction is restricted, the stability of the entire sole structure can be improved.

<Eighth embodiment>
In the first to fifth and seventh embodiments, an example is shown in which all the ridge lines of each upper convex portion and each upper convex bulge portion of the lower corrugated plate are fixed to the upper plate 2 (FIG. 9). The application of the present invention is not limited to this.

17 to 19 show a sole structure according to an eighth embodiment of the present invention. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. 17 shows an example in which the upper plate 2 has a flat shape, FIG. 18 shows an example in which the wave shape of the upper plate 2 has an opposite phase to the wave shape of the lower corrugated plate 3, and FIG. 3 shows examples of the wave shape and the same phase.

  As shown in FIGS. 17 to 19, each of the upper convex bulges 3 </ b> B of the lower corrugated plate 3 is partially screwed by the lower surface 2 </ b> C of the upper corrugated plate 2, the lower convex bulge 2 </ b> A or the upper It is connected to the lower surface of the convex bulge 2B, and the remaining upper convex bulge 3B is connected to the lower surface 2C of the upper plate 2, the lower convex bulge 2A or the lower surface of the upper convex bulge 2B. On the other hand, it is not connected via the screw 10 but merely abuts.

  In this case, when the compressive load is applied, the upper convex bulge portion 3B that is not connected to the upper plate 2 among the upper convex bulge portions 3B of the lower corrugated plate 3 is the lower surface 2C of the upper plate 2, It slides along the lower surface of the lower convex bulge 2A or the upper convex bulge 2B. Thereby, the large deformation | transformation of the front-back direction and the up-down direction of the lower corrugated plate 3 becomes easy, and cushioning properties can be improved. In this case, shoes suitable for athletes with light weight can be realized.

  On the other hand, as shown in FIGS. 9 to 11, when all of the upper convex bulges 3 </ b> B of the lower corrugated plate 3 are connected to the upper plate 2 via screws 10, Since the compression hardness at the time increases, shoes suitable for heavy athletes can be realized.

<Ninth embodiment>
In the eighth embodiment, a part of the upper convex bulging portion 3B of the lower corrugated plate 3 is not connected to the upper plate 2 via the screw 10 so that the upper convex bulging portion 3B becomes the upper plate 2. Although the example which made it slide along the lower surface of this invention was shown, application of this invention is not limited to this.

FIG. 20 shows a ninth embodiment of the present invention. In the figure, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. As shown in FIG. 20, an elongated through hole 3e extending in the front-rear direction (the left-right direction in the figure) is formed in the screw mounting portion of the lower corrugated plate 3. Head 10a of the screw 10 is in contact with the opening edge of the through-hole 3 e. The male screw portion 10 b of the screw 10 is inserted through the through hole 3 e of the lower corrugated plate 3 and is screwed into the female screw portion 2 a of the nut member 11 embedded in the upper plate 2. A gap in the front-rear direction is formed between the male screw portion 10b of the screw 10 and the through hole 3e.

  In this case, the upper plate 2 and the lower corrugated plate 3 are coupled via the screw 10 and the upper plate 2 and the lower corrugated plate 3 are allowed to move relative to each other in the front-rear direction. The upper plate 2 and / or the lower corrugated plate 3 can slide in the front-rear direction, which facilitates the deformation of the upper plate 2 and / or the lower corrugated plate 3 in the front-rear direction and the vertical direction, and provides cushioning properties. Can be improved.

<Tenth embodiment>
In each of the above-described embodiments, the example in which the screw 10 and the female screw portion 2a into which the screw 10 is screwed is shown as a fastener for connecting the lower corrugated plate 3 to the upper plate 2, but the application of the present invention is not limited thereto. .

  FIG. 21 shows a fastener according to a tenth embodiment of the present invention. As shown in the figure, the fastener is formed on a locking projection 3p having a substantially T-shaped cross section formed on the upper convex bulging portion 3B of the lower corrugated plate 3, and on the lower surface of the upper plate 2. The locking projection 3p of the lower corrugated plate 3 is configured with a locking groove 2g that can be detachably locked.

  When the lower corrugated plate 3 is connected to the upper plate 2, the lower corrugated plate 3 is attached to the upper plate 2 by engaging the engaging projection 3 p of the lower corrugated plate 3 with the engaging groove 2 g of the upper plate 2. The lower corrugated plate 3 is detached from the upper plate 2 by removing the engaging projection 3p of the lower corrugated plate 3 from the engaging groove 2g. In this case, the work of tightening or loosening the screws is not necessary, so that the lower corrugated plate 3 can be attached and detached more easily.

<Eleventh embodiment>
22 to 24 show a sole structure according to an eleventh embodiment of the present invention. In these drawings, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. The sole structure 1 is different from the first embodiment in that an intermediate corrugated plate 100 is inserted between the lower corrugated plate 3 and the upper plate 2.

  As shown in FIGS. 22 and 24, the intermediate corrugated plate 100 is a thin plate made of a hard elastic member similar to the lower corrugated plate 3, and has a wave shape that advances in the front-rear direction of the shoe. Here, the intermediate corrugated plate 100 includes an inner corrugated plate portion 101 disposed along the inner side of the shoe, and an outer corrugated plate portion 102 disposed along the outer side of the shoe. It is composed of As clearly shown in FIG. 23, the inner side corrugated plate portion 101 and the outer side corrugated plate portion 102 are separated in the shoe width direction (the vertical direction in the figure). The inner corrugated plate portion 101 and the outer corrugated plate portion 102 are formed with through holes 101a and 102a through which the male screw portion 10b of the screw 10 is inserted, respectively, and a plurality of ribs 101b and 102b are formed.

  Each wave shape of the inner corrugated plate portion 101 and the outer corrugated plate portion 102 is arranged along the upper surface of the lower corrugated plate 3, and each corrugated plate portion 101 is disposed on the upper surface of the lower corrugated plate 3. And the entire lower surface of 102 is in contact. The corrugated plate portions 101 and 102 are detachably attached to the upper plate 2 together with the lower corrugated plate 3 with screws 10.

  In this case, since the intermediate corrugated plate 100 is provided between the upper corrugated plate 2 and the lower corrugated plate 3, a material different from that of the lower corrugated plate 3 is used as the intermediate corrugated plate 100, or the plate thickness is changed. Thus, the cushioning property (that is, shock absorption and resilience) of the sole structure as a whole can be adjusted.

  For example, when climbing, two types of intermediate corrugated plates 100 having different rigidity are prepared for ascending and descending, and the intermediate corrugated plates 100 are appropriately used for ascending and descending (for example, high resilience in ascending) By using the one and using the one having a high impact absorbability when going down, the burden on the wearer's foot can be reduced. Alternatively, two types of intermediate corrugated plates 100 having different thicknesses of the heel portion are prepared for ascending and descending, and the intermediate corrugated plate is appropriately used for ascending and descending (for example, the thickness of the ridge portion is ascending in the ascending direction). By using the thicker one and using the one with the thinner plate thickness at the bottom, or by using it according to the slope of the mountain), the wearer can easily walk.

  Further, in this case, not only can the intermediate corrugated plate 100 be replaced simultaneously with the replacement of the lower corrugated plate 3, but also the lower corrugated plate 3 or the intermediate corrugated plate 100 can be replaced individually. , You can easily produce shoes according to the user's diverse preferences.

  Further, in this case, the inner corrugated plate portion 101 and the outer corrugated plate portion 102 can be easily made of materials having different rigidity from each other. This makes it easy to change the compression hardness when landing. As a result, it is possible to easily manufacture a shoe corresponding to over-pronation or over-suppression of the wearer's foot.

<Twelfth embodiment>
FIG. 25 shows a sole structure according to a twelfth embodiment of the present invention. In the figure, the same reference numerals as those in the above-described embodiments indicate the same or corresponding parts. In this sole structure, the soft elastic member 9 is inserted into the gap C formed between the upper plate 2 and the lower corrugated plate 3 in the heel portion of the shoe. As the soft elastic member 9, for example, a synthetic rubber or a synthetic resin excellent in shock absorption or a foam thereof (that is, a low-rebound foam material) is preferable. The resilience of the soft elastic member 9 itself can be adjusted by changing the type of rubber or resin or changing the foaming rate.

  The soft elastic member 9 has a notch 9n at the end in the width direction at the center in the front-rear direction. The positions where these notches 9n are formed correspond to the positions of the gaps 7 between the outsole 5 and 6 in the first embodiment, and screws 10 are arranged in the notches 9n. Screws 10 are also arranged on the front and rear sides of the soft elastic member 9, respectively.

  In this case, when the upper plate 2 is placed on the soft elastic member 9 shown in FIG. 25 and each screw 10 is tightened, the soft elastic member 9 is in the gap C between the upper plate 2 and the lower corrugated plate 3. By being compressed, the space C is filled. At this time, since the screws 9 are arranged in the front, rear and side of the soft elastic member 9 in the gap C, the soft elastic member 9 does not fall out of the gap C.

  When the lower corrugated plate 3 is elastically deformed, the soft elastic member 9 in the gap C is also elastically deformed. Therefore, the cushioning property can be adjusted by inserting the soft elastic member 9. Further, by inserting the soft elastic member 9, it is possible to prevent the bottom corrugated plate 3 from being flattened and causing bottoming when an excessive compressive load is applied to the lower corrugated plate 3. Furthermore, mud and water can be prevented from entering the gap C, and mud splashing and water splashing during traveling can be prevented.

  The soft elastic member 9 is formed with a plurality of cooling grooves 9g. If the upper plate 2 is formed with protrusions that engage with these grooves 9g in advance, When the plate 2 is attached, the soft elastic member 9 can be more reliably prevented from falling off from the gap C between the upper plate 2 and the lower corrugated sheet 3.

  In each of the first to fifth and seventh to twelfth embodiments described above, the case in which the cross-sectional shape of the upper plate 2 in the shoe width direction is a straight line is shown. The present invention can also be applied to a structure having a standing wall portion where the upper side and the outer side edge portion rise upward.

  In this case, if the standing wall portion of the upper plate 2 is fixed to the midsole side surface or the upper side surface of the shoe, the standing wall portion can act as a stabilizer to improve running stability and improve fit. Further, upper deformation can be suppressed.

  As described above, the present invention is useful for a shoe sole structure, and is particularly suitable for a user who wants to replace a shoe sole inexpensively and easily.

1: Sole structure

2, 2 ₁ , 2 ₂ : upper plate 2a: female thread (fastener)

3, 3 ₁ , 3 ₂ : Lower corrugated plate 30, 31: Lower convex bulge 32: Upper convex bulge 33, 34: Upper convex

9: Soft elastic member

10: Screw (fastener)
10b: Male thread

100: Intermediate corrugated plate 101: Inner corrugated plate portion 102: Outer corrugated plate portion

Japanese Patent Laid-Open No. 7-204007 (see FIG. 1, paragraphs [0013] to [0014]) JP-A-9-75107 (see FIGS. 1 to 3, paragraphs [0030] and [0032]).

Claims (18)

A sole structure of a shoe,
An upper plate made of a hard elastic member disposed above;
A lower corrugated plate made of a hard elastic member that is disposed below the upper plate, includes at least one upper convex portion, and has a wave shape that proceeds in the front-rear direction of the shoe ,
The lower corrugated plate is disposed on the lower surface of the upper plate such that a part of the ridge line in the width direction of the upper convex portion of the lower corrugated plate directly contacts the lower surface of the upper plate. Are connected to each other via a fastener, and the lower corrugated plate is provided so as to be replaceable by attaching and detaching the fastener to the upper plate.
A sole structure of a shoe characterized by that. In claim 1,
In the lower surface of the upper plate, a raised portion is integrally formed in the contact region with the upper convex portion of the lower corrugated plate,
A sole structure of a shoe characterized by that. In claim 1,
The corrugated shape of the lower corrugated plate has a plurality of upper convex portions in the front-rear direction, and at least some of the upper convex portions are connected to the upper plate via the fasteners. Yes,
A sole structure of a shoe characterized by that. In claim 1,
The lower corrugated plate is provided in the heel region of the shoe, has at least two lower convex bulges that protrude downward in a convex shape, and is located between the lower convex bulges adjacent in the front-rear direction. Each of the upper convex portions at the front and rear end portions of the lower corrugated plate and the upper convex bulge portion are detachably provided on the upper plate via the fastener. Yes,
A sole structure of a shoe characterized by that. In claim 1,
The upper plate has a wave shape that advances in the front-rear direction of the shoe,
A sole structure of a shoe characterized by that. In claim 5,
The wave shape of the upper plate has an opposite phase to the wave shape of the lower corrugated plate, and the lower convex portion of the wave shape of the upper plate and the upper convex portion of the wave shape of the lower corrugated plate At least some of the parts are secured to each other via the fasteners,
A sole structure of a shoe characterized by that. In claim 5,
The wave shape of the upper plate has the same phase as the wave shape of the lower corrugated plate, and the upper convex portion of the wave shape of the upper plate and the upper convex portion of the wave shape of the lower corrugated plate Are at least partially secured to each other via the fasteners,
A sole structure of a shoe characterized by that. In claim 1,
The upper plate has a wave shape that proceeds in the width direction of the shoe, and at least one of contact areas of the lower convex portion of the wave shape of the upper plate and the upper convex portion of the wave shape of the lower corrugated plate. Parts are secured to each other via the fasteners,
A sole structure of a shoe characterized by that. In claim 1,
The wave shape of the upper plate is composed of a combination of both a wave shape that advances in the front-rear direction of the shoe and a wave shape that advances in the width direction of the shoe.
A sole structure of a shoe characterized by that. In claim 1,
The fastener is composed of a male screw portion that is inserted through a through-hole formed in the lower corrugated plate from below, and a female screw portion that is provided in the upper plate and is screwed with the male screw portion.
A sole structure of a shoe characterized by that. In claim 1,
The fastener allows relative movement in the front-rear direction of the upper plate and the lower corrugated plate,
A sole structure of a shoe characterized by that. In claim 11,
A male threaded portion through which the fastener is formed in the lower corrugated plate and extends through a long hole-like through hole extending in the front-rear direction; and a female threaded portion formed in the upper plate and screwed into the male threaded portion Composed of,
A sole structure of a shoe characterized by that. In claim 1,
The fastener is formed on a locking projection formed on one of the upper plate or the lower corrugated plate and on the other of the upper plate or the lower corrugated plate, and the locking projection is detachably locked. It is composed of a locking groove to obtain,
A sole structure of a shoe characterized by that. In claim 1,
The fastening portion of the upper plate and the lower corrugated plate by the fastener is disposed on the outer peripheral side of the upper plate and the lower corrugated plate,
A sole structure of a shoe characterized by that. In claim 3 ,
A contact area between the upper plate and the at least part of the wavy upper convex portion of the lower corrugated plate extends in the front-rear direction of the shoe,
A sole structure of a shoe characterized by that. In claim 1,
On the upper surface of the lower corrugated plate, an intermediate corrugated plate made of a hard elastic member having a corrugated shape in the front-rear direction of the shoe along the corrugated shape of the lower corrugated plate is mounted, and the intermediate corrugated plate is the lower corrugated plate Attached to the upper plate together with the plate via a fastener.
A sole structure of a shoe characterized by that. In claim 16,
The intermediate corrugated plate is composed of an inner corrugated plate portion and an outer corrugated plate portion disposed on the inner shell side and the outer shell side of the shoe, respectively. The side corrugated plate part is separated in the shoe width direction,
A sole structure of a shoe characterized by that. In claim 1 ,
A gap is formed between the upper plate and the lower corrugated plate, and a soft elastic member is inserted in the gap.
A sole structure of a shoe characterized by that.

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