WO2018002835A1 - Semelle intérieure sans tige destinée à un article chaussant - Google Patents
Semelle intérieure sans tige destinée à un article chaussant Download PDFInfo
- Publication number
- WO2018002835A1 WO2018002835A1 PCT/IB2017/053860 IB2017053860W WO2018002835A1 WO 2018002835 A1 WO2018002835 A1 WO 2018002835A1 IB 2017053860 W IB2017053860 W IB 2017053860W WO 2018002835 A1 WO2018002835 A1 WO 2018002835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insole
- midfoot
- shankless
- rear part
- footwear
- Prior art date
Links
- 210000000452 mid-foot Anatomy 0.000 claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229920005669 high impact polystyrene Polymers 0.000 claims description 3
- 239000004797 high-impact polystyrene Substances 0.000 claims description 3
- 210000003414 extremity Anatomy 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000003467 diminishing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
-
- 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
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
- A43B13/386—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process multilayered
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
- A43B13/41—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process combined with heel stiffener, toe stiffener, or shank stiffener
Definitions
- THIS invention relates to a shankless insole for an item of footwear and to a method for making the insole.
- the insoles of many different types of heeled footwear are reinforced in a region extending forwardly from the heel to the midfoot by a separate, rigid shank.
- the shank which may be made of steel or other suitably stiff material, is typically located between upper and lower parts of the insole which are stuck together and may be anchored in position by rivets or the like that fasten it to the lower insole part.
- rivets or the like fasten it to the lower insole part.
- a shankless insole for an item of footwear comprising a rear part extending forwardly from a heel end to a midfoot end and a flexible front part extending rearwardly from a toe end to a midfoot end, the rear part being a one-piece plastics premould shaped to conform to the shape of a last which will subsequently be used during manufacture of the item of footwear, the rear part having a rear portion of sufficient thickness to render it substantially rigid and a front portion at the midfoot end which is thinner than the rear portion so as to have a degree of flexibility, the midfoot end of the front part and the front portion of the rear part being connected to one another in an overlapping relationship.
- the rear portion of the rear part of the insole meets the front portion of the rear part of the insole at a step.
- the height of this step may be similar to the thickness of the front part of the insole at the midfoot end thereof.
- the midfoot end of the front part of the insole overlaps the front portion of the rear part of the insole with a rear extremity of the midfoot end of the front part of the insole adjacent the step.
- an upper surface of the rear portion of the rear part of the insole is substantially flush with an upper surface of the midfoot end of the front part of the insole.
- a midfoot region of the insole, formed by the connected and overlapping midfoot ends of the front and rear parts of the insole, is typically more flexible than the rear portion of the rear part of the insole but less flexible than a front region of the front part of the insole situated forwardly of the midfoot end of the front part.
- An underside of the rear portion of the rear part of the insole may be formed with an integral, thickened bar formation extending in a forward/rearward direction, the bar formation being located centrally between opposite sides of the rear portion.
- a method of making a shankless insole for an item of footwear comprising the following steps:
- a rear insole part as a one-piece plastics premould conforming to the shape of a last which will be used during manufacture of the item of footwear, the rear insole part extending forwardly from a heel end to a midfoot end and having a rear portion of sufficient thickness to render it substantially rigid and a front portion at the midfoot end which is thinner than the rear portion so as to have a degree of flexibility;
- a method of manufacturing an item of footwear comprising the steps of making a shank!ess insole using the above method and incorporating the insole, on a last, with other components of the item of footwear.
- Figure 1 shows an exploded perspective view of a first embodiment of shankless insole according to the present invention
- Figure 2 shows a perspective view of the assembled insole seen in
- Figure 3 shows a cross-section at the line 3-3 in Figure 2;
- Figure 4 shows a perspective, view of the rear part of a second embodiment of shankless insole according to the present invention
- Figure 5 shows a side view of the rear part seen in Figure 4.
- Figure 6 shows a cross-section at the line 6-6 in Figure 5.
- the tnsole 10 illustrated in Figures 1 and 2 is designed for use in a shoe with a low heel, and includes a rear part 12 and a front part 14.
- the rear part 12 is premouided in one piece of a suitable plastics material, in this case high impact polystyrene. It extends forwardly from a heel end 12.1 to a midfoot end 12.2 and includes a rear portion 12.3 and a front portion 12.4.
- the thickness of the front portion 12.4 diminishes in a forward direction, it is somewhat thinner throughout than the rear portion 12.3. There is a step 12.5 between the rear portion 12.3 and the front portion 12.4.
- the thickness of the front portion 12.4 is sufficiently small for this portion to have a degree of resilient flexibility throughout although, as a result of its diminishing thickness, this flexibility increases in the forward direction.
- the front portion flares outwardly in width in a forward direction, i.e. the width of the front portion at its forward edge 12.6 is greater than its width adjacent the step 12.5.
- the premouided rear part is shaped to conform to the shape of a shoe last which will subsequently be used during manufacture of the shoe. It has a concave curvature in a transverse direction, i.e. in a direction extending between its lateral edges 12.7 and 12.8, which conforms to the shape of the last and which enhances wearer comfort in use.
- the front part 14 of the insole 10 is resiliency flexible throughout and is made of moulded ftbreboard of a type conventionally used in shoe insoles. It extends rearwardly from a toe end 14.1 to a midfoot end 14.2.
- the front part 14 has a concave curvature in a transverse direction, i.e. in a direction extending between its lateral edges 14.3 and 14.4, once again selected to suit the shape of the shoe last and to enhance wearer comfort in use.
- the midfoot end 14.2 flares outwardly in width, in a forward direction, in a manner similar to the outward flare of the front portion 12.4 of the rear part 12. At its rear edge 14.5, the width of the midfoot end 14.2 is similar to that of the front portion 12.4 adjacent the step 12.5.
- the thickness of the rear portion 12.3 of the rear part 12 may diminish, preferably in a progressive manner, in a forward direction. While this diminishing thickness of the rear portion 12.3 can provide a progressive increase in flexibility in the forward direction, the rear portion as a whole is substantially more rigid throughout than the front part 14 of the insole, i.e. the rear portion 12.3 of the rear part 12 is relatively rigid in comparison to the front part 14.
- the insole is assembled by connecting the midfoot end of the front part 14 to the midfoot end of the rear part 12 in overlapping relationship.
- the midfoot end 14.2 of the front part 14 is placed over and adhered, by means of a suitable adhesive, to the front portion 12.4 at the midfoot end of the rear part 12.
- the rear edge 14.5 of the front part 14 is adjacent to and preferably in abutment with the step 12.5. This is shown in Figure 2 which also shows that there is a smooth transition between the side edges of the respective parts at the connection.
- the thickness of the front part 14, at least at the midfoot end 14.2, is similar to the height of the step 12.5 between the rear portion 12.3 and the front portion 12.4 of the rear part. Accordingly, when the midfoot ends of the respective parts are connected to one another there is a smooth transition between the upper surfaces of the parts, i.e. the upper surfaces are substantially flush with one another at the step, in order to promote wearer comfort in use, as indicated by the arrow 16 in Figure 3.
- Figures 4 to 6 illustrate the premoulded rear part 100 of a second embodiment of insole according to the invention.
- the insole in this case is designed for use with a high heel shoe, typically a ladies' shoe with a heel pitch of 40mm or more.
- the shape of the rear part 100, and the loading which will be applied to it in use, are such that extra reinforcement is required in a region 102 of the rear portion 104 of the rear part 00.
- the necessary extra reinforcement is provided by a thickened bar formation 106 which extends in a forward/rearward direction.
- the bar formation is integral with the remainder of the rear part 100, i.e. the rear part, including the bar formation, is moulded in one piece.
- the plastics materia! used may be a high impact polystyrene as in the first embodiment.
- the rear end of the bar formation 104 is located some distance in front of the rear end of the rear portion 104 and the front end of the bar formation is located some distance to the rear of the step 110.
- the bar formation is located centrally between the opposite side edges 112, 114 of the rear portion 104. It will be understood that the bar formation provides the rear part 100 of the insole with additional rigidity and resistance to flexure.
- the premoulded rear part 100 of the insole is shaped to conform to the shape of the last which wilt subsequently be used during manufacture of the shoe. It is connected by adhesive to a front insole part (not illustrated) which may be similar to the front part 14 of the first embodiment, with the resultant, assembled insole then being taken to the last for incorporation in a shoe as described previously.
- the thickness of the rear portion 104 of the rear part 100 is such as to render it substantially rigid throughout relative to the front part, in this case with the bar formation 06 providing extra rigidity to the rear portion.
- the thickness of this portion may again diminish progressively in the forward direction.
- One important advantage of the illustrated insoles and the manner in which they are made, as described above, is that there is no separate shank. Instead, the required rigidity at the rear of the insole is provided by the relatively rigid nature of the rear portion 12.3, 104 of the rear part 2, 100 and the required flexibility in the midfoot region is facilitated by the reduced thickness of the rear part in this region. It is expected that the absence of a separate shank and the choice of a one-piece, moulded rear part will simplify the insole manufacturing process and contribute to overall cost reduction in the manufacture of a shoe or other item of footwear.
- an tnsole according to the invention is the fact that the rear part of the insole is formed as a one-piece, premoulded plastics component shaped for conformity with the particular last which will be used in the manufacture of the item of footwear in question.
- the rear part is connected in a simple manner to the front part of the insole.
- the front region of the front part i.e. forwardly of the midfoot region, has a high degree of resilient flexibility as in a conventional insole of thin, moulded fibreboard. It will also be understood that the insoles described above will provide a high degree of rigidity towards the rear, a high degree of resilient flexibility towards the front and an intermediate level of resilient flexibility in the midfoot region.
- the terms “forward”, “forwardly” and the like are used to designate a direction from heel to toe, that the terms “rearward”, “rearwardly” and the like are used to designate the opposite direction, i.e. from toe to heel, and that terms such as “down” are used with reference to the normal orientation of an insole in use.
- midfoot is used to designate a location between the heel and toe of the insole, not necessarily an exact midpoint between heel and toe. Persons skilled in the art will recognize that the region where the midfoot ends of the respective front and rear insole parts overlap one another is at a position close to where the ball of a wearer's foot will locate in use.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
L'invention concerne une semelle intérieure sans tige comportant une partie arrière (12) s'étendant vers l'avant depuis une extrémité talon (12.1) jusqu'à une extrémité centre du pied (12.2) et une partie avant flexible (14) s'étendant vers l'arrière depuis une extrémité orteil (14.1) jusqu'à une extrémité centre du pied (14.2). La partie arrière se présente sous la forme d'un prémoule en plastique d'une seule pièce dont la forme épouse la forme d'une forme qui sera par la suite utilisée pour la fabrication de l'article chaussant d'une seule pièce. Ladite semelle comporte une portion arrière (12.3) ayant une épaisseur suffisante pour la rendre sensiblement rigide et une portion avant (12.4) au niveau de l'extrémité centre du pied qui est plus mince que la portion arrière de manière à présenter un certain degré de flexibilité. L'extrémité centre du pied de la partie avant et la portion avant de la partie arrière sont reliées l'une à l'autre selon une relation de chevauchement. L'invention concerne également des procédés permettant de fabriquer la semelle intérieure sans tige et l'article chaussant.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA201604389 | 2016-06-28 | ||
ZA2016/04389 | 2016-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018002835A1 true WO2018002835A1 (fr) | 2018-01-04 |
Family
ID=59383603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2017/053860 WO2018002835A1 (fr) | 2016-06-28 | 2017-06-28 | Semelle intérieure sans tige destinée à un article chaussant |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2018002835A1 (fr) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB823685A (en) * | 1954-09-23 | 1959-11-18 | Leslie Arthur Loakes | Improvements in or relating to composite sheets for forming insoles for footwear |
FR2136950A1 (fr) * | 1971-05-10 | 1972-12-29 | Kyriasis Jean | |
GB1489605A (en) * | 1975-01-03 | 1977-10-26 | Gardiner & Pratt Ltd | Shoe insole and method of manufacturing the same |
GB1521682A (en) * | 1974-06-19 | 1978-08-16 | Clarks Ltd | Footwear |
BE868277A (fr) * | 1977-06-21 | 1978-10-16 | Toho Beslon Co | Semelle premiere et son procede de fabrication |
EP0488727A1 (fr) * | 1990-11-29 | 1992-06-03 | British United Shoe Machinery Limited | Produit en carton |
EP0525324A1 (fr) * | 1991-08-02 | 1993-02-03 | CIPRO S.a.s. di ZUIN LORENZA & C. | Procédé de fabrication de chaussures |
FR2895649A1 (fr) * | 2006-01-02 | 2007-07-06 | Claude Jourdanne | Procede visant a limiter le nombre de pointures de moules pour semelles de chaussures par recoupe de l'une des deux parties et assemblage suivant une graduation |
WO2008037977A2 (fr) * | 2006-09-27 | 2008-04-03 | Julie Pelusi | Dispositif de matelassage pour article chaussant |
DE202011000863U1 (de) * | 2011-04-14 | 2011-08-09 | Sioux Gmbh | Schuheinlegesohle |
-
2017
- 2017-06-28 WO PCT/IB2017/053860 patent/WO2018002835A1/fr active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB823685A (en) * | 1954-09-23 | 1959-11-18 | Leslie Arthur Loakes | Improvements in or relating to composite sheets for forming insoles for footwear |
FR2136950A1 (fr) * | 1971-05-10 | 1972-12-29 | Kyriasis Jean | |
GB1521682A (en) * | 1974-06-19 | 1978-08-16 | Clarks Ltd | Footwear |
GB1489605A (en) * | 1975-01-03 | 1977-10-26 | Gardiner & Pratt Ltd | Shoe insole and method of manufacturing the same |
BE868277A (fr) * | 1977-06-21 | 1978-10-16 | Toho Beslon Co | Semelle premiere et son procede de fabrication |
EP0488727A1 (fr) * | 1990-11-29 | 1992-06-03 | British United Shoe Machinery Limited | Produit en carton |
EP0525324A1 (fr) * | 1991-08-02 | 1993-02-03 | CIPRO S.a.s. di ZUIN LORENZA & C. | Procédé de fabrication de chaussures |
FR2895649A1 (fr) * | 2006-01-02 | 2007-07-06 | Claude Jourdanne | Procede visant a limiter le nombre de pointures de moules pour semelles de chaussures par recoupe de l'une des deux parties et assemblage suivant une graduation |
WO2008037977A2 (fr) * | 2006-09-27 | 2008-04-03 | Julie Pelusi | Dispositif de matelassage pour article chaussant |
DE202011000863U1 (de) * | 2011-04-14 | 2011-08-09 | Sioux Gmbh | Schuheinlegesohle |
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