EP2912962B1 - Upper provided with sponge member in heel part - Google Patents
Upper provided with sponge member in heel part Download PDFInfo
- Publication number
- EP2912962B1 EP2912962B1 EP12887143.1A EP12887143A EP2912962B1 EP 2912962 B1 EP2912962 B1 EP 2912962B1 EP 12887143 A EP12887143 A EP 12887143A EP 2912962 B1 EP2912962 B1 EP 2912962B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sponge
- sponge plate
- heel
- lateral
- medial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000002683 foot Anatomy 0.000 claims description 44
- 210000003423 ankle Anatomy 0.000 claims description 29
- 210000000988 bone and bone Anatomy 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 17
- 210000004233 talus Anatomy 0.000 claims description 6
- 210000001361 achilles tendon Anatomy 0.000 description 7
- 239000003550 marker Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 229920002323 Silicone foam Polymers 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000013514 silicone foam Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/028—Resilient uppers, e.g. shock absorbing
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
- A43B13/188—Differential cushioning regions
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B19/00—Shoe-shaped inserts; Inserts covering the instep
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/07—Linings therefor
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/28—Devices to put in shoes in order to prevent slipping at the heel or to prevent abrading the stockings
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
Definitions
- the present invention relates to an upper having a sponge member in a heel portion.
- Shoes having a sponge member in the heel portion in order to improve the fit of the heel portion of the upper are well known in the art.
- U.S. Patent No. 3,693,270 discloses a structure of an upper for improving a fitting property of a heel portion of the upper of a shoe.
- Said upper comprises a pad which includes a medial side portion covering a medial side of a calcaneal bone and a lateral side portion covering a lateral side of the calcaneal bone.
- FIGS. 1A and 1B a large number of markers M were attached to the foot of the subject in a five-by-five matrix pattern.
- FIGS. 1C and 1D show images of the markers M in a standstill position. Note that the markers M are connected with one another by vertical lines and horizontal lines so as to make the images easier to view.
- FIGS. 2(a) to 2(e) ran as shown in FIGS. 2(a) to 2(e) , and images of the markers M were captured at different phases, including heel contact HC of FIG. 2(a) , foot flat FF of FIG. 2(b) , mid stance MS of FIG. 2(c) , heel rise HR of FIG. 2(d) , and toe off TO of FIG. 2(e) .
- FIGS. 2(f) to 2(j) show images on the back side
- FIGS. 2(k) to 2(o) show images on the lateral side.
- M1 denotes a marker attached to the medial ankle
- M2 denotes a marker attached to the lateral ankle.
- FIGS. 2(k) to 2(o) while focusing on the back side of the foot, one will notice that the portion posterior to the lateral ankle, i.e., the area of the Achilles tendon, is narrowed increasingly toward the top over the period of heel contact HC to heel rise HR , but the narrowing decreases dramatically at the moment of toe off TO.
- the area Fb at generally the same level as on the lateral side of the foot is narrowed throughout the entire period. It is assumed that this area Fb is behind the calcaneal tuberosity Cp.
- the lower end portion of the Achilles tendon is attached to the calcaneal tuberosity Cp , and a portion of the Achilles tendon that is above the calcaneal tuberosity Cp is substantially displaced during motion whereas the calcaneal tuberosity Cp itself does not substantially change during motion. Therefore, it is expected that for the back side, the slippage off the upper will decrease by inserting a thick sponge in the area of the calcaneal tuberosity Cp at generally the same level as on the lateral side Lat of the foot.
- the amount of slippage was particularly small when a 10 mm or 15 mm sponge plate Sp was installed.
- An upper 1 of the present invention includes an inner skin 11 placed on a wear's skin side (a side to face a wear's skin), and an outer skin 12 placed on an opposite side from the inner skin 11 , wherein a sponge member 3 is housed between the inner skin 11 and the outer skin 12 in the heel portion 10 ; the sponge member 3 includes a medial side portion 34 covering a medial side of a calcaneal bone Ca , and a lateral side portion covering a lateral side of the calcaneal bone Ca ; and in a developed view where the sponge member 3 is unfolded into a planar shape (plane figure), a level of a lateral first centroid O10 of a portion corresponding to the lateral side portion is set to be higher than a level of a medial first centroid O11 of a portion corresponding to the medial side portion 34.
- the level of the lateral first centroid O10 is higher than the level of the medial first centroid O11. Therefore, the sponge member 3 is placed in an area where the shape of the foot is hollowed and does not change substantially, i.e., in the lower portion directly below the medial ankle of the foot and in an area immediately below the lateral ankle of the foot, and the fit will therefore improve.
- a sponge member refers to a member of a foamed synthetic resin or a foamed rubber that easily deforms under a load of an external force and that generally restores its original shape upon removal of the external force.
- a sponge member may be a member that is cut off or cut out from a sponge plate of a predetermined thickness, or may be obtained by subjecting such a member to secondary molding in a mold.
- a sponge member may be a member individually foamed and molded in a mold.
- centroid means the center of a shape.
- the medial side portion 34 covers at least a portion of a lower edge Ce of the calcaneal bone Ca directly below a talus Ta
- the lateral side portion 35 covers an area of the calcaneal bone Ca directly above a point O , wherein the point O bisects a distance between a lowermost end point Ae of a lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca.
- the medial side portion 34 of the sponge member 3 fills the narrowed portion directly below the talus Ta.
- the lateral side portion 35 of the sponge member 3 fills the narrowed portion directly and immediately below the lateral ankle A0. Therefore, narrowed portions on the medial side and the lateral side of the heel will be filled, and the upper 1 will better fit the heel.
- the sponge member 3 includes a thin portion 3a having a small thickness, and a thick portion 3b thicker than the thin portion 3a , and wherein with the sponge member 3 unfolded, a perimeter of the thick portion 3b is surrounded by the thin portion 3a.
- the thick portion 3b protrudes with respect to the thin portion 3a , and the triangular narrowed portions on the medial side and the lateral side of the heel will likely be filled by the protruding area.
- a level of a lateral second centroid O20 of a portion of the thick portion 3b corresponding to the lateral side portion is set to be higher than a level of a medial second centroid O21 of a portion of the thick portion 3b corresponding to the medial side portion 34.
- the level of the lateral second centroid O20 of the thick portion 3b is higher than the medial second centroid O21 of the thick portion 3b. Therefore, the thick portion 3b is placed in an area where the shape of the foot is hollowed or narrowed and does not change substantially, i.e., in the lower portion directly below the medial ankle of the foot and in an area directly (nearly immediately) below the lateral ankle of the foot, and the fitting property will therefore further improve.
- a lower edge line 3bL of the thick portion 3b extends, while being upwardly slanted, from a medial side of the heel portion 10 to a lateral side thereof via a back side thereof.
- the thick portion 3b will likely fill the gap in the lower portion of the heel portion 10 on the medial side of the heel portion 10 , fill the gap behind the calcaneal tuberosity Cp on the back side of the heel portion 10 , and fill the gap in the upper portion of the heel portion 10 on the lateral side of the heel portion 10.
- a lower edge line 3L of the sponge member 3 extends, while being upwardly slanted, from a medial side of the heel portion 10 to a lateral side thereof via a back side thereof.
- the sponge member 3 will likely fill the gap in the lower portion of the heel portion 10 on the medial side of the heel portion 10 , fill the gap behind the calcaneal tuberosity Cp of the heel portion 10 on the back side of the heel portion 10 , and fill the gap in the upper portion of the heel portion 10 on the lateral side of the heel portion 10.
- the sponge member 3 includes:
- the manufacturing cost will be significantly lower as compared with a case where the sponge member 3 is molded in a mold in a secondary molding process, or the like. Moreover, the sponge member 3 will not have locally dense portions.
- the second sponge plate 32 is formed by a material having a lower resilience than the first sponge plate 31.
- the low-resilience second sponge plate 32 placed on the foot skin side maintains, with a small pressure, the shape in conformity with the surface of the foot, it is possible to achieve a desirable foot conformity.
- the shape of the heel substantially changes instantaneously, the high-resilience first sponge plate 31 will likely follow such changes. Therefore, the fitting property of the upper will further improve.
- low resilience means that the speed at which the original shape is restored upon removal of a load of an external force is low. Therefore, when a load of an external force is applied to both of the sponge plates 31 and 32 , the high-resilience first sponge plate 31 will deform quickly, and the deformation of the low-resilience second sponge plate 32 will lag behind. Upon removal of the load of the external force off both of the sponge plates 31 and 32 , the first sponge plate 31 will quickly restore its original shape, and the restoration of the second sponge plate 32 will lag behind the first sponge plate 31.
- the second sponge plate 32 is formed by a material having a lower hardness than the first sponge plate 31.
- the low-hardness second sponge plate 32 placed on the foot skin side will softly contact the skin surface of the heel. Therefore, the wearer will unlikely feel compressed.
- the second sponge plate 32 is formed by a material having a lower resilience and a lower hardness than the first sponge plate 31.
- the material of the first sponge plate 31 having a high hardness and a high resilience may be, for example, an urethane foam, a silicone foam, or the like, whereas a material having a low hardness and a low resilience may be, for example, an urethane foam, a silicone foam, or the like.
- the material of the high-resilience first sponge plate 31 has a lower resilience than the sponge material used in an ordinary midsole or a sock liner (sock lining), it has a relatively higher resilience than the material of the low-resilience second sponge plate 32.
- the hardness of the first sponge plate 31 is preferably 40 to 90 degrees, more preferably 55 to 90 degrees, particularly preferably 70 to 90 degrees, and most preferably 75 to 85 degrees, in terms of the F hardness.
- the hardness of the second sponge plate 32 is preferably 10 to 80 degrees, more preferably 10 to 50 degrees, particularly preferably 10 to 30 degrees, and most preferably 15 to 25 degrees, in terms of the F hardness.
- the above F hardness is a value obtained through measurement using the Asker rubber hardness meter F-type (from Kobunshi Keiki Co., Ltd.). Note that the hardness of the first sponge plate 31 and the hardness of the second sponge plate 32 will be substantially zero degree if measured by using a JIS C hardness meter.
- the sponge member 3 further includes a back portion 30 covering a calcaneal tuberosity Cp from directly behind along a virtual line CL dividing the sponge member 3 into the medial side portion 34 and the lateral side portion 35 , and the sponge member 3 defines a narrowed portion 36 which is narrowed downwardly along the virtual line CL and which does not cover an area above the calcaneal tuberosity Cp.
- the gap which likely occurs between the calcaneal tuberosity Cp and an area of the upper behind the calcaneal tuberosity Cp , will be filled by the back portion 30 , thereby improving the fitting property.
- the narrowed portion 36 will accommodate substantial displacement or deformation of the Achilles tendon, and therefore the movement of the Achilles tendon will unlikely be hindered.
- FIGS. 4 to 5D show Embodiment 1.
- the upper 1 includes the inner skin 11 placed on the wear's skin side, and the outer skin 12 placed on the opposite side from the inner skin 11.
- the sponge member 3 is housed between the inner skin 11 and the outer skin 12 in the heel portion 10.
- FIG. 4 merely shows the conceptual placement of the sponge member 3.
- Reference numeral 6 denotes an insole.
- the inner skin 11 may be a mesh material, or the like, as well as a woven material or a knit material having desirable stretchability and air-permeability.
- the outer skin 12 may be a mesh material, or the like, as well as a plate or tape material made of a synthetic leather or a non-foamed synthetic resin having a desirable shape retention.
- each of the inner skin 11 and the outer skin 12 may include a single layer or multiple layers.
- a heel counter or a core well known in the art may be placed.
- the sponge member 3 includes the first to third sponge plates 31 to 33.
- the first sponge plate 31 and the second sponge plate 32 are bonded, glued or welded together, and are partially laid on each other.
- the second sponge plate 32 and the third sponge plate 33 are bonded, glued or welded together, and are partially laid on each other.
- the first sponge plate 31 is formed by a sponge having a high resilience and a high hardness.
- the second and third sponge plates 32 and 33 are formed by a sponge having a low resilience and a low hardness.
- the third sponge plate 33 may be of a material having the same physical properties as that of the second sponge plate 32.
- the first sponge plate 31 extends along the medial side of the heel coming from the back side of the heel and also extends along the lateral side of the heel coming from the back side of the heel.
- the second sponge plate 32 is laid on the foot skin side of the first sponge plate 31 , and has a smaller area than the first sponge plate 31 as shown in FIG. 5A .
- the third sponge plate 33 of FIG. 4 is laid on the foot skin side (the inner skin 11 side) of the second sponge plate 32 , and has an even smaller area than the second sponge plate 32 as shown in FIG. 5A .
- the sponge member 3 includes the medial side portion 34 covering the medial side of the calcaneal bone Ca as shown in FIG. 5C , and the lateral side portion 35 covering the lateral side of the calcaneal bone Ca as shown in FIG. 5D .
- the medial side portion 34 and the lateral side portion 35 of FIG. 4 are separated from each other by a medial-lateral center line (virtual line) CL of the heel portion 10 ( FIG. 4 ).
- the sponge member 3 includes the thin portion 3a having a small thickness, and the thick portion 3b thicker than the thin portion 3a.
- the perimeter of the thick portion 3b is surrounded by the thin portion 3a.
- the thin portion 3a is formed by a portion of the first sponge plate 31 on which no second sponge plate 32 is laid.
- the thick portion 3b is formed by a portion where the second sponge plate 32 is laid on the first sponge plate 31.
- the sponge member 3 includes a thickest portion 3c that is even thicker than the thick portion 3b. With the sponge member 3 of FIG. 5A unfolded, the perimeter of the thickest portion 3c is surrounded by the thick portion 3b.
- the lower edge line 3L of the sponge member 3 extends, while being upwardly slanted, from the medial side of the heel portion 10 to the lateral side thereof via the back side thereof.
- the level of the centroid of the portion corresponding to the lateral side portion 35 i.e., the lateral first centroid O10
- the level of the centroid of the portion corresponding to the medial side portion 34 is set to be higher than the level of the centroid of the portion corresponding to the medial side portion 34 , i.e., the medial first centroid O11.
- the lower edge and upper edge line 3bL of the thick portion 3b extends, while being upwardly slanted, from the medial side of the heel portion 10 to the lateral side thereof via the back side thereof.
- the level of the lateral second centroid O20 of the portion of the thick portion 3b corresponding to the lateral side portion 35 is set to be higher than the level of the medial second centroid 021 of the portion of the thick portion 3b corresponding to the medial side portion 34.
- the first sponge plate 31 further includes the back portion 30 covering the calcaneal tuberosity Cp ( FIG. 5C ) from directly behind along the virtual center line CL of FIG. 5A .
- the first sponge plate 31 has the narrowed portion 36 where the upper edge is narrowed downwardly along the center line CL , which is the medial-lateral center. Because of the narrowed portion 36 , the first sponge plate 31 does not cover the area above the calcaneal tuberosity Cp , and the first sponge plate 31 will not therefore compress the Achilles tendon during toe off of FIG. 2(o) .
- protruding portions 37 and 37 protruding upward on opposite sides of the narrowed portion 36 of FIG. 5A will improve the fit on the medial side and the lateral side of the heel.
- the first sponge plate 31 of the medial side portion 34 of FIG. 5C covers at least a portion of the lower edge Ce of the calcaneal bone Ca directly below the talus Ta , and covers the majority of the lower half of the calcaneal bone Ca posterior to the medial ankle A1.
- the second sponge plate 32 of the medial side portion 34 covers an area of the calcaneal bone Ca below the point O1 and does not cover an area above the point O1, wherein the point O1 bisects a distance between the lowermost end point Ae of the medial ankle A1 and the lower edge Ce of the calcaneal bone Ca.
- the first and second sponge plates 31 and 32 of the lateral side portion 35 cover both an area of the calcaneal bone Ca directly above the point O and an area of the calcaneal bone Ca directly below the point O , wherein the point O bisects a distance between the lowermost end point Ae of the lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca.
- the first sponge plate 31 extends to a point anterior to the lowermost end point Ae of the medial ankle A1 on the medial side of the foot of FIG. 5C , and extends to a point anterior to the lowermost end point Ae of the lateral ankle A0 on the lateral side of the foot of FIG. 5D .
- the second sponge plate 32 extends to a point anterior to the posterior end Ab of the medial ankle A1 on the medial side of the foot of FIG. 5C , and extends to a point anterior to the posterior end Ab of the lateral ankle A0 on the lateral side of the foot of FIG. 5D .
- the areas of the first sponge plate 31 , the second sponge plate 32 and the third sponge plate 33 on the medial side portion 34 are respectively greater than those on the lateral side portion 35. Note that for the lowermost end portion of the foot, a roll-up portion is often formed in the upper 1 itself or in the sock liner (sock lining), in which case there is no need to provide the sponge member 3 on the medial side Med.
- the area of the third sponge plate 33 on the lateral side of the foot may be greater than that on the medial side of the foot.
- FIGS. 7A to 7D show Embodiment 3.
- the third sponge plate 33 is absent.
- the thickness of the first and second sponge plates 31 and 32 is preferably made greater than that in Embodiments 1 and 2.
- the thickness of the sponge plates 31 and 32 is preferably about 5 to 15 mm, and more preferably about 7 to 12 mm.
- the second sponge plate 32 has a narrowed portion 38 that is narrowed downwardly in the area of the center line CL.
- the narrowed portion 38 in cooperation with the narrowed portion 36 , will further unlikely causes compression on the Achilles tendon.
- the second sponge plate 32 has a significantly larger area on the medial side portion 34 than on the lateral side portion 35.
- the second sponge plate 32 extends to a point anterior to the posterior end Ab of the medial ankle A1 on the medial side portion 34 of FIG. 7C , and the second sponge plate 32 does not extend to the posterior end Ab of the lateral ankle A0 on the lateral side portion 35 of FIG. 7D , with the second sponge plate 32 not covering the anterior half of the calcaneal bone Ca while covering the posterior portion of the calcaneal bone Ca .
- FIGS. 8A to 8D show an example not in accordance with the invention.
- the medial side portion 34 and the lateral side portion 35 have shapes that are generally in line symmetry with each other about the center line CL.
- the medial side portion 34 of the first sponge plate 31 covers at least a portion of the lower edge Ce of the calcaneal bone Ca directly below the talus Ta.
- the lateral side portion 35 of the first sponge plate 31 covers an area of the calcaneal bone Ca directly above the point O , wherein the point O is a bisector between the lower end of the lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca.
- the second sponge plate 32 of FIG. 8A includes, at its opposite ends, protruding portions 39 and 39 that coincide with the upper edge line of the first sponge plate 31.
- the protruding portions 39 will be helpful in positioning the first sponge plate 31 and the second sponge plate 32 with each other.
- the sponge member 3 of the present example having a generally line-symmetric shape may lead to a less desirable fitting property as compared with Embodiments 1 to 3.
- the second sponge plate 32 is partially laid on the first sponge plate 31 , and the sponge member 3 can be expected to fill the gap between the foot and the upper 1 and improve the fit to some degree.
- the foot conformity will improve by setting the hardness and the resilience of the second sponge plate 32 lower than those of the first sponge plate 31.
- this example having a symmetric shape can improve productivity as compared with Embodiments 1 to 3, where it is necessary to provide both a member for the left foot and a member for the right foot, and the left-foot member and the right-foot member cannot be installed incorrectly during the manufacture.
- different sponge plates may have the same hardness and the same resilience property.
- the sponge member may be divided into two pieces between the medial side and the lateral side, or may be divided into three pieces between the medial side, the back side and the lateral side.
- the present invention is applicable to a heel portion of an upper.
Description
- The present invention relates to an upper having a sponge member in a heel portion.
- Shoes having a sponge member in the heel portion in order to improve the fit of the heel portion of the upper are well known in the art.
-
- First Patent Document:
JP2011-041590 A - Second Patent Document:
JP2010-022791 A -
U.S. Patent No. 3,693,270 discloses a structure of an upper for improving a fitting property of a heel portion of the upper of a shoe. Said upper comprises a pad which includes a medial side portion covering a medial side of a calcaneal bone and a lateral side portion covering a lateral side of the calcaneal bone. - There have been no researches in the prior art on the sponge member conducted while sufficiently taking into consideration the change in the shape of the foot. Therefore, in the prior art, the conformity of the upper to the foot (the fitting property) has not been satisfactory.
- It is therefore an object of the present invention to provide an upper having a sponge member in a heel portion, with which it is possible to improve the fitting property of the upper.
- Prior to the description of the configuration of the present invention, the principle of the present invention will be presented through experiments and discussions done by the present inventors.
- Referring to
FIGS. 1A and 1B , a large number of markers M were attached to the foot of the subject in a five-by-five matrix pattern.FIGS. 1C and 1D show images of the markers M in a standstill position. Note that the markers M are connected with one another by vertical lines and horizontal lines so as to make the images easier to view. - Then, the subject ran as shown in
FIGS. 2(a) to 2(e) , and images of the markers M were captured at different phases, including heel contact HC ofFIG. 2(a) , foot flat FF ofFIG. 2(b) , mid stance MS ofFIG. 2(c) , heel rise HR ofFIG. 2(d) , and toe off TO ofFIG. 2(e) . -
FIGS. 2(f) to 2(j) show images on the back side, andFIGS. 2(k) to 2(o) show images on the lateral side. In these figures, M1 denotes a marker attached to the medial ankle, whereas M2 denotes a marker attached to the lateral ankle. - First, looking at
FIGS. 2(f) to 2(j) while focusing on the medial side Med of the foot, one will notice that the portion below the marker M1 of the medial ankle is narrowed increasingly toward the bottom throughout the entire motion period, and will notice that the narrowing particularly increases during toe off TO. Therefore, it is expected that for the medial side Med of the foot, the slippage off the upper will decrease by inserting a thick sponge in a lower portion Fu. - On the other hand, looking at
FIGS. 2(f) to 2(j) while focusing on the lateral side Lat of the foot, one will notice that the portion below the marker M2 of the lateral ankle is such that an area Fa immediately below the lateral ankle is narrowed throughout the entire motion period, and that the narrowing decreases during toe off TO. Therefore, it is expected that for the lateral side Lat of the foot, the slippage off the upper will decrease by inserting a thick sponge in an upper portion of the foot immediately below the lateral ankle. - Looking at
FIGS. 2(k) to 2(o) while focusing on the back side of the foot, one will notice that the portion posterior to the lateral ankle, i.e., the area of the Achilles tendon, is narrowed increasingly toward the top over the period of heel contact HC to heel rise HR, but the narrowing decreases dramatically at the moment of toe off TO. On the other hand, one will notice that the area Fb at generally the same level as on the lateral side of the foot is narrowed throughout the entire period. It is assumed that this area Fb is behind the calcaneal tuberosity Cp. The lower end portion of the Achilles tendon is attached to the calcaneal tuberosity Cp, and a portion of the Achilles tendon that is above the calcaneal tuberosity Cp is substantially displaced during motion whereas the calcaneal tuberosity Cp itself does not substantially change during motion. Therefore, it is expected that for the back side, the slippage off the upper will decrease by inserting a thick sponge in the area of the calcaneal tuberosity Cp at generally the same level as on the lateral side Lat of the foot. - Then, the present inventors verified the hypothesis by the following method.
- First, three different prototypes were provided, which had the same shoe structure with their arrangements of the sponge plate being different from one another. That is, there were provided
Type 1 shown inFIGS. 3(a) to 3(c) ,Type 2 shown inFIGS. 3(d) to 3(f) , andType 3 shown inFIGS. 3(g) to 3(i) . These types of shoes are basically of the same structure, only with their arrangements of the sponge plate Sp indicated by broken lines being different from one another. Note thatreference numeral 1 denotes an upper, and reference numeral 2 a sole. - Next, while the subject ran, the amount of vertical slippage between the shoe and the foot over the tread period was measured, obtaining a measurement result indicating that
Type 2 had a smaller amount of vertical slippage thanType 1 andType 3. It is believed that this result agrees with the hypothesis, and that the hypothesis is probably right. - As the thickness of the sponge plate Sp was varied from 5 mm to 10 mm to 15 mm with
Type 2, the amount of slippage was particularly small when a 10 mm or 15 mm sponge plate Sp was installed. - An upper 1 of the present invention includes an
inner skin 11 placed on a wear's skin side (a side to face a wear's skin), and anouter skin 12 placed on an opposite side from theinner skin 11, wherein asponge member 3 is housed between theinner skin 11 and theouter skin 12 in theheel portion 10;
thesponge member 3 includes amedial side portion 34 covering a medial side of a calcaneal bone Ca, and a lateral side portion covering a lateral side of the calcaneal bone Ca; and
in a developed view where thesponge member 3 is unfolded into a planar shape (plane figure), a level of a lateral first centroid O10 of a portion corresponding to the lateral side portion is set to be higher than a level of a medial first centroid O11 of a portion corresponding to themedial side portion 34. - In this case, the level of the lateral first centroid O10 is higher than the level of the medial first centroid O11. Therefore, the
sponge member 3 is placed in an area where the shape of the foot is hollowed and does not change substantially, i.e., in the lower portion directly below the medial ankle of the foot and in an area immediately below the lateral ankle of the foot, and the fit will therefore improve. - In the present invention, a sponge member refers to a member of a foamed synthetic resin or a foamed rubber that easily deforms under a load of an external force and that generally restores its original shape upon removal of the external force. A sponge member may be a member that is cut off or cut out from a sponge plate of a predetermined thickness, or may be obtained by subjecting such a member to secondary molding in a mold. Moreover, a sponge member may be a member individually foamed and molded in a mold.
- Note that in the present invention, the centroid means the center of a shape.
-
-
FIGS. 1A and 1B are a slant back side view and a slant lateral side view, respectively, showing a foot with markers attached thereto, andFIGS. 1C and 1D are a back side view and a lateral side view, respectively, showing captured positions of the markers in a standstill position. -
FIG. 2 shows a test method and a test result, wherein (a) to (e) are schematic side views showing the running form from heel contact to toe off, (f) to (j) are images capturing the markers from the back side from heel contact to toe off, and (k) to (o) are images capturing the markers from the lateral side over the same period. -
FIG. 3 shows arrangements of the sponge plate in test samples, wherein (a), (b) and (c) are a medial side view, a back side view and a lateral side view, respectively, of the heel portion of a shoe ofType 1, (d), (e) and (f) are a medial side view, a back side view and a lateral side view, respectively, of the heel portion of a shoe ofType 2, and (g), (h) and (i) are a medial side view, a back side view and a lateral side view, respectively, of the heel portion of a shoe ofType 3. -
FIG. 4 is a conceptual lateral cross-sectional view of an upper according toEmbodiment 1 of the present invention. -
FIGS. 5A to 5D relate toEmbodiment 1, whereinFIG. 5A is a plan view of a sponge member,FIG. 5B is a cross-sectional view thereof,FIG. 5C is a medial side view showing the relationship between the sponge member and the foot, andFIG. 5D is a lateral side view showing the same. -
FIGS. 6A to 6D relate toEmbodiment 2, whereinFIG. 6A is a plan view of a sponge member,FIG. 6B is a cross-sectional view thereof,FIG. 6C is a medial side view showing the relationship between the sponge member and the foot, andFIG. 6D is a lateral side view showing the same. -
FIGS. 7A to 7D relate toEmbodiment 3, whereinFIG. 7A is a plan view of a sponge member,FIG. 7B is a cross-sectional view thereof,FIG. 7C is a medial side view showing the relationship between the sponge member and the foot, andFIG. 7D is a lateral side view showing the same. -
FIGS. 8A to 8D relate to an example not in accordance with the invention, whereinFIG. 8A is a plan view of a sponge member,FIG. 8B is a cross-sectional view thereof,FIG. 8C is a medial side view showing the relationship between the sponge member and the foot, andFIG. 8D is a lateral side view showing the same. - Preferably, the
medial side portion 34 covers at least a portion of a lower edge Ce of the calcaneal bone Ca directly below a talus Ta, and thelateral side portion 35 covers an area of the calcaneal bone Ca directly above a point O, wherein the point O bisects a distance between a lowermost end point Ae of a lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca. - In this case, the
medial side portion 34 of thesponge member 3 fills the narrowed portion directly below the talus Ta. On the other hand, thelateral side portion 35 of thesponge member 3 fills the narrowed portion directly and immediately below the lateral ankle A0. Therefore, narrowed portions on the medial side and the lateral side of the heel will be filled, and the upper 1 will better fit the heel. - More preferably, the
sponge member 3 includes athin portion 3a having a small thickness, and athick portion 3b thicker than thethin portion 3a, and wherein with thesponge member 3 unfolded, a perimeter of thethick portion 3b is surrounded by thethin portion 3a. - In this case, the
thick portion 3b protrudes with respect to thethin portion 3a, and the triangular narrowed portions on the medial side and the lateral side of the heel will likely be filled by the protruding area. - More preferably, in a developed view where the
thick portion 3b is unfolded into a planar shape,
a level of a lateral second centroid O20 of a portion of thethick portion 3b corresponding to the lateral side portion is set to be higher than a level of a medial second centroid O21 of a portion of thethick portion 3b corresponding to themedial side portion 34. - The level of the lateral second centroid O20 of the
thick portion 3b is higher than the medial second centroid O21 of thethick portion 3b. Therefore, thethick portion 3b is placed in an area where the shape of the foot is hollowed or narrowed and does not change substantially, i.e., in the lower portion directly below the medial ankle of the foot and in an area directly (nearly immediately) below the lateral ankle of the foot, and the fitting property will therefore further improve. - Preferably, a lower edge line 3bL of the
thick portion 3b extends, while being upwardly slanted, from a medial side of theheel portion 10 to a lateral side thereof via a back side thereof. - In this case, the
thick portion 3b will likely fill the gap in the lower portion of theheel portion 10 on the medial side of theheel portion 10, fill the gap behind the calcaneal tuberosity Cp on the back side of theheel portion 10, and fill the gap in the upper portion of theheel portion 10 on the lateral side of theheel portion 10. - Preferably, a
lower edge line 3L of thesponge member 3 extends, while being upwardly slanted, from a medial side of theheel portion 10 to a lateral side thereof via a back side thereof. - In this case, the
sponge member 3 will likely fill the gap in the lower portion of theheel portion 10 on the medial side of theheel portion 10, fill the gap behind the calcaneal tuberosity Cp of theheel portion 10 on the back side of theheel portion 10, and fill the gap in the upper portion of theheel portion 10 on the lateral side of theheel portion 10. - Preferably, the
sponge member 3 includes: - a
first sponge plate 31 extending along a medial side of a heel coming from a back side of the heel and also extending along a lateral side of the heel coming from the back side of the heel; and - a
second sponge plate 32 laid on a foot skin side of thefirst sponge plate 31, thesecond sponge plate 32 having a smaller area than thefirst sponge plate 31, wherein:- the
second sponge plate 32 is laid on a portion of thefirst sponge plate 31 while being bonded, glued or welded to thefirst sponge plate 31; - the
thin portion 3a is formed by a portion of thefirst sponge plate 31 on which thesecond sponge plate 32 is not laid; and - the
thick portion 3b is formed by a portion where thesecond sponge plate 32 is laid on thefirst sponge plate 31.
- the
- In this example, the manufacturing cost will be significantly lower as compared with a case where the
sponge member 3 is molded in a mold in a secondary molding process, or the like. Moreover, thesponge member 3 will not have locally dense portions. - Preferably, the
second sponge plate 32 is formed by a material having a lower resilience than thefirst sponge plate 31. - Since the low-resilience
second sponge plate 32 placed on the foot skin side maintains, with a small pressure, the shape in conformity with the surface of the foot, it is possible to achieve a desirable foot conformity. On the other hand, when the shape of the heel substantially changes instantaneously, the high-resiliencefirst sponge plate 31 will likely follow such changes. Therefore, the fitting property of the upper will further improve. - In the present invention, "low resilience" means that the speed at which the original shape is restored upon removal of a load of an external force is low. Therefore, when a load of an external force is applied to both of the
sponge plates first sponge plate 31 will deform quickly, and the deformation of the low-resiliencesecond sponge plate 32 will lag behind. Upon removal of the load of the external force off both of thesponge plates first sponge plate 31 will quickly restore its original shape, and the restoration of thesecond sponge plate 32 will lag behind thefirst sponge plate 31. - Preferably, the
second sponge plate 32 is formed by a material having a lower hardness than thefirst sponge plate 31. - In this case, the low-hardness
second sponge plate 32 placed on the foot skin side will softly contact the skin surface of the heel. Therefore, the wearer will unlikely feel compressed. - More preferably, the
second sponge plate 32 is formed by a material having a lower resilience and a lower hardness than thefirst sponge plate 31. - In this case, the fit will further improve, and one will unlikely feel compressed.
- In the present invention, the material of the
first sponge plate 31 having a high hardness and a high resilience may be, for example, an urethane foam, a silicone foam, or the like, whereas a material having a low hardness and a low resilience may be, for example, an urethane foam, a silicone foam, or the like. Although the material of the high-resiliencefirst sponge plate 31 has a lower resilience than the sponge material used in an ordinary midsole or a sock liner (sock lining), it has a relatively higher resilience than the material of the low-resiliencesecond sponge plate 32. - The hardness of the
first sponge plate 31 is preferably 40 to 90 degrees, more preferably 55 to 90 degrees, particularly preferably 70 to 90 degrees, and most preferably 75 to 85 degrees, in terms of the F hardness. - On the other hand, the hardness of the
second sponge plate 32 is preferably 10 to 80 degrees, more preferably 10 to 50 degrees, particularly preferably 10 to 30 degrees, and most preferably 15 to 25 degrees, in terms of the F hardness. - The above F hardness is a value obtained through measurement using the Asker rubber hardness meter F-type (from Kobunshi Keiki Co., Ltd.). Note that the hardness of the
first sponge plate 31 and the hardness of thesecond sponge plate 32 will be substantially zero degree if measured by using a JIS C hardness meter. - Preferably, the
sponge member 3 further includes aback portion 30 covering a calcaneal tuberosity Cp from directly behind along a virtual line CL dividing thesponge member 3 into themedial side portion 34 and thelateral side portion 35, and thesponge member 3 defines a narrowedportion 36 which is narrowed downwardly along the virtual line CL and which does not cover an area above the calcaneal tuberosity Cp. - In this case, the gap, which likely occurs between the calcaneal tuberosity Cp and an area of the upper behind the calcaneal tuberosity Cp, will be filled by the
back portion 30, thereby improving the fitting property. On the other hand, the narrowedportion 36 will accommodate substantial displacement or deformation of the Achilles tendon, and therefore the movement of the Achilles tendon will unlikely be hindered. - The present invention will be understood more clearly from the following description of preferred embodiments taken in conjunction with the accompanying drawings. Note however that the embodiments and the drawings are merely illustrative and should not be taken to define the scope of the present invention. The scope of the present invention shall be defined only by the appended claims. In the accompanying drawings, like reference numerals denote like components throughout the plurality of figures.
- Embodiments of the present invention will now be described with reference to the drawings.
-
FIGS. 4 to 5D show Embodiment 1. - As shown in
FIG. 4 , the upper 1 includes theinner skin 11 placed on the wear's skin side, and theouter skin 12 placed on the opposite side from theinner skin 11. Thesponge member 3 is housed between theinner skin 11 and theouter skin 12 in theheel portion 10. - Note that although the
sponge member 3 undergoes substantial compressive deformation, or the like, when manufacturing the shoe,FIG. 4 merely shows the conceptual placement of thesponge member 3.Reference numeral 6 denotes an insole. - The
inner skin 11 may be a mesh material, or the like, as well as a woven material or a knit material having desirable stretchability and air-permeability. On the other hand, theouter skin 12 may be a mesh material, or the like, as well as a plate or tape material made of a synthetic leather or a non-foamed synthetic resin having a desirable shape retention. - Note that each of the
inner skin 11 and theouter skin 12 may include a single layer or multiple layers. A heel counter or a core well known in the art may be placed. - In the present embodiment, the
sponge member 3 includes the first tothird sponge plates 31 to 33. Thefirst sponge plate 31 and thesecond sponge plate 32 are bonded, glued or welded together, and are partially laid on each other. Thesecond sponge plate 32 and thethird sponge plate 33 are bonded, glued or welded together, and are partially laid on each other. - The
first sponge plate 31 is formed by a sponge having a high resilience and a high hardness. On the other hand, the second andthird sponge plates - Note that the
third sponge plate 33 may be of a material having the same physical properties as that of thesecond sponge plate 32. - As shown in
FIGS. 5A to 5D , thefirst sponge plate 31 extends along the medial side of the heel coming from the back side of the heel and also extends along the lateral side of the heel coming from the back side of the heel. As shown inFIG. 4 , thesecond sponge plate 32 is laid on the foot skin side of thefirst sponge plate 31, and has a smaller area than thefirst sponge plate 31 as shown inFIG. 5A . Thethird sponge plate 33 ofFIG. 4 is laid on the foot skin side (theinner skin 11 side) of thesecond sponge plate 32, and has an even smaller area than thesecond sponge plate 32 as shown inFIG. 5A . - The
sponge member 3 includes themedial side portion 34 covering the medial side of the calcaneal bone Ca as shown inFIG. 5C , and thelateral side portion 35 covering the lateral side of the calcaneal bone Ca as shown inFIG. 5D . Themedial side portion 34 and thelateral side portion 35 ofFIG. 4 are separated from each other by a medial-lateral center line (virtual line) CL of the heel portion 10 (FIG. 4 ). - Thus, as shown in
FIG. 5B , thesponge member 3 includes thethin portion 3a having a small thickness, and thethick portion 3b thicker than thethin portion 3a. With thesponge member 3 ofFIG. 5A unfolded, the perimeter of thethick portion 3b is surrounded by thethin portion 3a. - That is, the
thin portion 3a is formed by a portion of thefirst sponge plate 31 on which nosecond sponge plate 32 is laid. On the other hand, thethick portion 3b is formed by a portion where thesecond sponge plate 32 is laid on thefirst sponge plate 31. - Note that in the case of three layers as shown in
FIG. 5B , thesponge member 3 includes athickest portion 3c that is even thicker than thethick portion 3b. With thesponge member 3 ofFIG. 5A unfolded, the perimeter of thethickest portion 3c is surrounded by thethick portion 3b. - As shown in
FIGS. 5A, 5C and 5D , thelower edge line 3L of thesponge member 3 extends, while being upwardly slanted, from the medial side of theheel portion 10 to the lateral side thereof via the back side thereof. Thus, in the developed view ofFIG. 5A where thesponge member 3 is unfolded into a planar shape (plane figure), the level of the centroid of the portion corresponding to thelateral side portion 35, i.e., the lateral first centroid O10, is set to be higher than the level of the centroid of the portion corresponding to themedial side portion 34, i.e., the medial first centroid O11. - As shown in
FIGS. 5A, 5C and 5D , the lower edge and upper edge line 3bL of thethick portion 3b extends, while being upwardly slanted, from the medial side of theheel portion 10 to the lateral side thereof via the back side thereof. Thus, in the developed view ofFIG. 5A , the level of the lateral second centroid O20 of the portion of thethick portion 3b corresponding to thelateral side portion 35 is set to be higher than the level of the medialsecond centroid 021 of the portion of thethick portion 3b corresponding to themedial side portion 34. - The
first sponge plate 31 further includes theback portion 30 covering the calcaneal tuberosity Cp (FIG. 5C ) from directly behind along the virtual center line CL ofFIG. 5A . Thefirst sponge plate 31 has the narrowedportion 36 where the upper edge is narrowed downwardly along the center line CL, which is the medial-lateral center. Because of the narrowedportion 36, thefirst sponge plate 31 does not cover the area above the calcaneal tuberosity Cp, and thefirst sponge plate 31 will not therefore compress the Achilles tendon during toe off ofFIG. 2(o) . On the other hand, protrudingportions portion 36 ofFIG. 5A will improve the fit on the medial side and the lateral side of the heel. - The
first sponge plate 31 of themedial side portion 34 ofFIG. 5C covers at least a portion of the lower edge Ce of the calcaneal bone Ca directly below the talus Ta, and covers the majority of the lower half of the calcaneal bone Ca posterior to the medial ankle A1. Thesecond sponge plate 32 of themedial side portion 34 covers an area of the calcaneal bone Ca below the point O1 and does not cover an area above the point O1, wherein the point O1 bisects a distance between the lowermost end point Ae of the medial ankle A1 and the lower edge Ce of the calcaneal bone Ca. - The first and
second sponge plates lateral side portion 35 cover both an area of the calcaneal bone Ca directly above the point O and an area of the calcaneal bone Ca directly below the point O, wherein the point O bisects a distance between the lowermost end point Ae of the lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca. - The
first sponge plate 31 extends to a point anterior to the lowermost end point Ae of the medial ankle A1 on the medial side of the foot ofFIG. 5C , and extends to a point anterior to the lowermost end point Ae of the lateral ankle A0 on the lateral side of the foot ofFIG. 5D . - The
second sponge plate 32 extends to a point anterior to the posterior end Ab of the medial ankle A1 on the medial side of the foot ofFIG. 5C , and extends to a point anterior to the posterior end Ab of the lateral ankle A0 on the lateral side of the foot ofFIG. 5D . - The areas of the
first sponge plate 31, thesecond sponge plate 32 and thethird sponge plate 33 on themedial side portion 34 are respectively greater than those on thelateral side portion 35. Note that for the lowermost end portion of the foot, a roll-up portion is often formed in the upper 1 itself or in the sock liner (sock lining), in which case there is no need to provide thesponge member 3 on the medial side Med. - In the following examples, like elements to those of
Embodiment 1 will be denoted by like reference numerals and will not be further described below, and the following description will mainly focus on what is different fromEmbodiment 1. - Note that as in
Embodiment 2 shown inFIGS. 6A to 6D , the area of thethird sponge plate 33 on the lateral side of the foot may be greater than that on the medial side of the foot. -
FIGS. 7A to 7D show Embodiment 3. - In the present embodiment, the
third sponge plate 33 is absent. In such a case, the thickness of the first andsecond sponge plates Embodiments - In various embodiments, the thickness of the
sponge plates - As shown in
FIG. 7A , inEmbodiment 3, thesecond sponge plate 32 has a narrowedportion 38 that is narrowed downwardly in the area of the center line CL. The narrowedportion 38, in cooperation with the narrowedportion 36, will further unlikely causes compression on the Achilles tendon. - As shown in
FIGS. 7A, 7C and 7D , thesecond sponge plate 32 has a significantly larger area on themedial side portion 34 than on thelateral side portion 35. Thesecond sponge plate 32 extends to a point anterior to the posterior end Ab of the medial ankle A1 on themedial side portion 34 ofFIG. 7C , and thesecond sponge plate 32 does not extend to the posterior end Ab of the lateral ankle A0 on thelateral side portion 35 ofFIG. 7D , with thesecond sponge plate 32 not covering the anterior half of the calcaneal bone Ca while covering the posterior portion of the calcaneal bone Ca. -
FIGS. 8A to 8D show an example not in accordance with the invention. - In this example, the
medial side portion 34 and thelateral side portion 35 have shapes that are generally in line symmetry with each other about the center line CL. - In the present example, the
medial side portion 34 of thefirst sponge plate 31 covers at least a portion of the lower edge Ce of the calcaneal bone Ca directly below the talus Ta. On the other hand, thelateral side portion 35 of thefirst sponge plate 31 covers an area of the calcaneal bone Ca directly above the point O, wherein the point O is a bisector between the lower end of the lateral ankle A0 and the lower edge Ce of the calcaneal bone Ca. - The
second sponge plate 32 ofFIG. 8A includes, at its opposite ends, protrudingportions first sponge plate 31. The protrudingportions 39 will be helpful in positioning thefirst sponge plate 31 and thesecond sponge plate 32 with each other. - The
sponge member 3 of the present example having a generally line-symmetric shape may lead to a less desirable fitting property as compared withEmbodiments 1 to 3. However, thesecond sponge plate 32 is partially laid on thefirst sponge plate 31, and thesponge member 3 can be expected to fill the gap between the foot and the upper 1 and improve the fit to some degree. Particularly, the foot conformity will improve by setting the hardness and the resilience of thesecond sponge plate 32 lower than those of thefirst sponge plate 31. - On the other hand, this example having a symmetric shape can improve productivity as compared with
Embodiments 1 to 3, where it is necessary to provide both a member for the left foot and a member for the right foot, and the left-foot member and the right-foot member cannot be installed incorrectly during the manufacture. - While preferred embodiments have been described above with reference to the drawings, various obvious changes and modifications will readily occur to those skilled in the art upon reading the present specification.
- For example, different sponge plates may have the same hardness and the same resilience property.
- The sponge member may be divided into two pieces between the medial side and the lateral side, or may be divided into three pieces between the medial side, the back side and the lateral side.
- Thus, such changes and modifications are deemed to fall within the scope of the present invention.
- The present invention is applicable to a heel portion of an upper.
-
- 1: Upper, 10: Heel portion, 11: Inner skin, 12: Outer skin
- 2: Sole
- 3: Sponge member, 30: Back portion, 31: First sponge plate, 32: Second sponge plate, 33: Third sponge plate, 34: Medial side portion, 35: Lateral side portion, 36: Narrowed portion, 37: Protruding portion, 38: Narrowed portion, 39: Protruding portion
- 3a: Thin portion, 3b: Thick portion, 3c: Thickest portion, 3bL: Lower edge line of thick portion
- 3L: Lower edge line of sponge member
- 6: Insole
- A0: Lateral ankle, A1: Medial ankle, Ae: Lowermost end point, Ab: Posterior end
- Ca: Calcaneal bone, Ce: Lower edge of calcaneal bone, Cp: Calcaneal tuberosity
- CL: Center line
- Fa: Area directly below lateral ankle, Fb: Area at same height as on lateral side of foot, Fu: Lower portion
- M: Marker, M1: Marker attached to medial ankle, M2: Marker attached to lateral ankle
- O, O1: Bisector point
- O10: Lateral first centroid, O11: Medial first centroid, O20: Lateral second centroid
- O21: Medial second centroid
- Sp: Sponge plate
- Ta: Talus
Claims (11)
- A structure of an upper for improving a fitting property of a heel portion (10) of the upper (1) of a shoe, wherein:the upper (1) includes an inner skin (11) placed on a wear's skin side, and an outer skin (12) placed on an opposite side from the inner skin (11), wherein a sponge member (3) is housed between the inner skin (11) and the outer skin in the heel portion (10); andthe sponge member (3) includes a medial side portion (34) covering a medial side of a calcaneal bone (Ca), and a lateral side portion (35) covering a lateral side of the calcaneal bone (Ca);characterised in that,in a developed view where the sponge member (3) is unfolded into a planar shape, a level of a lateral first centroid (O10) of a portion corresponding to the lateral side portion (35) is set to be higher than a level of a medial first centroid (O11) of a portion corresponding to the medial side portion (34).
- The structure according to claim 1, wherein the medial side portion (34) covers at least a portion of a lower edge (Ce) of the calcaneal bone (Ca) directly below a talus (Ta), and the lateral side portion covers an area of the calcaneal bone (Ca) directly above a point (O), wherein the point (O) bisects a distance between a lowermost end point (Ae) of a lateral ankle (A0) and the lower edge (Ce) of the calcaneal bone (Ca).
- The structure according to claim 2, wherein the sponge member (3) includes a thin portion (3a) having a small thickness, and a thick portion (3b) thicker than the thin portion (3a), and wherein with the sponge member (3) unfolded, a perimeter of the thick portion (3b) is surrounded by the thin portion (3a).
- The structure according to claim 3, wherein in a developed view where the thick portion (3b) is unfolded into a planar shape, a level of a lateral second centroid (O20) of a portion of the thick portion (3b) corresponding to the lateral side portion is set to be higher than a level of a medial second centroid (O21) of a portion of the thick portion (3b) corresponding to the medial side portion (34).
- The structure according to claim 3, wherein a lower edge line (3bL) of the thick portion (3b) extends, while being upwardly slanted, from a medial side of the heel portion (10) to a lateral side of the heel portion (10) via a back side of the heel portion (10).
- The structure according to claim 2, wherein a lower edge line (3L) of the sponge member (3) extends, while being upwardly slanted, from a medial side of the heel portion (10) to a lateral side of the heel portion (10) via a back side of the heel portion (10).
- The structure according to claim 3, wherein the sponge member (3) comprises:a first sponge plate (31) extending along a medial side of a heel coming from a back side of the heel and also extending along a lateral side of the heel coming from the back side of the heel; anda second sponge plate (32) laid on a foot skin side of the first sponge plate (31), the second sponge plate (32) having a smaller area than the first sponge plate (31), wherein:the second sponge plate (32) is laid on a portion of the first sponge plate (31) while being bonded, glued or welded to the first sponge plate (31);the thin portion (3a) is formed by a portion of the first sponge plate (31) on which the second sponge plate (32) is unlaid; andthe thick portion (3b) is formed by a portion where the second sponge plate (32) is laid on the first sponge plate (31).
- The structure according to claim 7, wherein the second sponge plate (32) is formed by a material having a lower resilience than the first sponge plate (31).
- The structure according to claim 7, wherein the second sponge plate (32) is formed by a material having a lower hardness than the first sponge plate (31).
- The structure according to claim 7, wherein the second sponge plate (32) is formed by a material having a lower resilience and a lower hardness than the first sponge plate (31).
- The structure according to claim 2, wherein the sponge member (3) further comprises a back portion (30) covering a calcaneal tuberosity (Cp) from directly behind along a virtual line (CL) dividing the sponge member (3) into the medial side portion (34) and the lateral side portion (35), and the sponge member (3) defines a narrowed portion (36) that is narrowed downwardly along the virtual line (CL) without covering an area above the calcaneal tuberosity (Cp).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/077471 WO2014064780A1 (en) | 2012-10-24 | 2012-10-24 | Upper provided with sponge member in heel part |
Publications (3)
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EP2912962A1 EP2912962A1 (en) | 2015-09-02 |
EP2912962A4 EP2912962A4 (en) | 2016-10-19 |
EP2912962B1 true EP2912962B1 (en) | 2020-01-01 |
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EP12887143.1A Active EP2912962B1 (en) | 2012-10-24 | 2012-10-24 | Upper provided with sponge member in heel part |
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EP (1) | EP2912962B1 (en) |
JP (1) | JP5947913B2 (en) |
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US10499706B2 (en) * | 2013-03-22 | 2019-12-10 | Reebok International Limited | Molded footwear upper and method of making same |
EP3150077B1 (en) | 2014-05-29 | 2018-07-04 | ASICS Corporation | Shoe upper |
FR3024022B1 (en) | 2014-07-22 | 2017-04-28 | Salomon Sas | FOOTWEAR WITH IMPROVED STRUCTURE |
JP6490939B2 (en) * | 2014-10-14 | 2019-03-27 | 株式会社 Akaishi | Footwear pad |
JP5986700B1 (en) | 2015-10-08 | 2016-09-06 | 株式会社アシックス | Shoes with upper and sole |
US9693601B2 (en) * | 2015-11-11 | 2017-07-04 | Cabela's Incorporated | Footwear with zoned insulation |
DE102018203543A1 (en) * | 2018-03-08 | 2019-09-12 | Adidas Ag | Improved shoe upper |
AU2018423796A1 (en) * | 2018-05-18 | 2020-11-26 | Asics Corporation | Shoe sole including laminate-structured midsole |
DE102019128701A1 (en) * | 2019-07-24 | 2021-01-28 | MIRBRE UG (haftungsbeschränkt) | Holding device for socks |
US20230148709A1 (en) * | 2021-11-18 | 2023-05-18 | Acushnet Company | Asymmetrical heel pad |
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- 2012-10-24 EP EP12887143.1A patent/EP2912962B1/en active Active
- 2012-10-24 WO PCT/JP2012/077471 patent/WO2014064780A1/en active Application Filing
- 2012-10-24 US US14/437,814 patent/US20150289589A1/en not_active Abandoned
- 2012-10-24 JP JP2014543059A patent/JP5947913B2/en active Active
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Title |
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None * |
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JP5947913B2 (en) | 2016-07-06 |
WO2014064780A1 (en) | 2014-05-01 |
US20150289589A1 (en) | 2015-10-15 |
EP2912962A1 (en) | 2015-09-02 |
JPWO2014064780A1 (en) | 2016-09-05 |
EP2912962A4 (en) | 2016-10-19 |
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