FR2707846A1 - Footwear provided with an isolation device. - Google Patents

Abstract

The present invention relates to an article of footwear, characterized in that it is provided with an insulating device (5) arranged under the insole (3). The invention is more particularly applicable in the field of the manufacture of shoes, in particular with injected outsole.

Description

Footwear provided with an insulation device The present invention

  relates to the field of footwear, such as shoes, boots,

  boots or the like, and relates to such an article of footwear provided with an isolation device. 5 Currently, many people, particularly in the industrial sector, wear the same shoes.

  shoes or similar footwear without interruption for long periods of time, for example eight hours or more. This results in high risks of contraction10 of mycoses or other epidermal affections, parasitic or not, of the feet, or even a peeling of the skin of the soles of the feet and, at the very least, a burning sensation and discomfort, especially for people subject to profuse sweating. 15 One solution proposed by the manufacturers of footwear consisted in making holes in

  the upper at specific locations, in particular at the front part of the footwear. However, such a solution is not satisfactory.

  because it does not, on the one hand, create air circulation or ventilation under the

  soles of the feet, especially in the toe area and the support area behind the toes, or, on the other hand, to isolate the soles of the feet against the release of heat due to walking.

  However, footwear, which is provided with a molded outsole directly on the upper,

  generally carry the highest risk of illness and generate the most discomfort

pronounced.

  The present invention aims to overcome these drawbacks.

  It has, in fact, for its object a hosiery characterized in that it is provided with an insulation device placed under the sole. The invention will be better understood, thanks to the

  description below, which relates to a preferred embodiment, given by way of nonlimiting example, and

  explained with reference to the accompanying diagrammatic drawing, the single figure of which is a side elevation view in partial section of a footwear article according to the invention.

  The single figure of the appended drawing represents an article of footwear 1 comprising a outsole 2, a

  first sole 3 and a rod 4. According to the invention, this article

  sant 1 is advantageously provided with an insulation device 5 arranged under the first sole 3.

  The insulation device 5 preferably consists of an elongated element 6, advantageously

  disposed at least under the support area of the sole of the user's foot and delimiting, under the first sole 3, at least one air space.

  This elongated element 6 is in the form of a false sole fixed by its periphery 7, by

  dage, bonding or sewing on the underside of the first se-25 melle 3 and provided with spacing means 8, preferably in the form of ribs, defining with said first sole 3 air spaces. According to a characteristic of the invention, the spacing means 8 extend transversely to the longitudinal axis of the elongate element 6. Thus, the longitudinal flexibility of the elongate element 6 is ensured,

  so that it does not constitute any obstacle to the flexibility of the whole of the footwear, the flexion resulting from walking having only the effect of modifying the geometry of the spaces between the ribs 8.

  It is also possible, according to an alternative embodiment of the invention, to provide means 8

  extending parallel to the longitudinal axis of the element

lying down 6.

  In order to improve the flexibility of the element

  elongated 6, the means 8 in the form of ribs are advanced

  taggedly provided with at least one cut-out interrupt providing communication with the neighboring air space defined by means 8, or rib, according to

or preceding.

  The device 5 according to the invention allows isolation of the sole of the foot against the release

  heat occurring during walking due to friction between the outsole 2 and the pre-15 mole sole 3, by creating an insulating air pocket under the sole of the foot.

  In accordance with another characteristic of the invention, the first sole 3 is provided with perfo-

  rations 9 over all or part of its surface extending above the air space or spaces delimited by the means 8 or ribs provided on the elongated element 6. Thus, during

  of each flexion, during walking, the compressed air between the first sole 3 and the outsole 2 can escape through the perforations 9 in the footwear and be sucked again between the means 8 after said bending.

  In addition, the provision of this insulation device 5 allows a reduction in the radius of curvature of the outsole and a reduction in the thickness of the latter at said device 5. As a result, in the case of an embodiment of the outsole 2 by

  injection, for example of polyurethane, this can be reduced at the level of said device 5.

  According to another characteristic of the invention, the space or spaces delimited between the first sole 3 4 and the elongated element 6 can be partially filled

  a solid material with deodorant and / or desiccant action having prolonged effects over time. Thus, it is possible to simultaneously deal with the problems of perspiration and corresponding odor development.

  In accordance with another alternative embodiment of the invention, not shown in the accompanying drawing,

  the elongate element 6 can be provided, on the one hand, with an upper closing part delimiting with the lower part a flat addition and, on the other hand, with a valve suction means and a means backflow also

  valve, said means opening out respectively, the suction means outside the footwear or inside it and the delivery means, in the form of nozzles, under the sole of the foot and / or the toes, as well as possibly near the heel.

  Such an embodiment makes it possible to combine the insulating effect of the device 5 with an effect of air circulation and renewal of the latter in the article of footwear during walking.

  The air circulation or ventilation generated by the device 5 thus constituted is particularly important.

  bearing in the case of a movement of the user, due to significant variations in the pressure exerted by the foot of the user on the first sole 3, simultaneously with the bending of the latter, when taking support of the foot. The distribution of air under the sole of the foot and / or under the toes can be carried out by means of air supply and distribution, in the form of channels, grooves or grooves, converging towards the affected areas. It is also possible, according to another variant embodiment of the invention not shown in the attached drawing, to combine the isolation device 5

  with an air circulation pump arranged in the area

  heel tie of the sole and connected by a conduit to the air space delimited by the elongated element 6, said

  pump sucking air outside the article

  health or within it. So it is possi-

  ble to carry out a forced circulation of air inside

  laughter of the footwear, with or without regeneration of said air, which is delivered under the sole of the foot and / or

  the toes through the perforations 9.

  Outsole 2 can be made in

  polyurethane foam and have a mono- structure

  layer or multilayer with variable density.

  Thanks to the invention, it is possible to carry out

  be an article of footwear allowing insulation of the

  sole of the foot against release of heat

  good when walking due to the friction between

  the first and wear soles and allowing possible-

  Also, ventilation of the sole and / or toes. In addition, the invention also provides a possibility of treatment of exudations and / or odors. This results in a significant improvement in comfort

  for the user and a significant reduction in risks

  contraction of pedestrian ailments.

  Of course, the invention is not limited to

  embodiment described and represented in the drawing anne-

  xed. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without leaving

  provided the scope of protection of the invention.

RE V E N D I C A T I ON S

  1. Footwear, characterized in that it is provided with an insulation device (5) arranged under

the first sole (3).

  2. Footwear according to claim 1, characterized in that the insulation device (5) preferably consists of an elongated element (6), advantageously disposed at least under the support area of the sole of the foot of the user and delimiting, under the

  first sole (3), at least one air space.

  3. Footwear according to claim

  2, characterized in that the elongate element (6) is present

  te in the form of a false sole fixed by its periphery

  line (7), by welding, gluing or sewing on the underside

  lower of the first sole (3) and provided with spacing means (8) delimiting with said first sole

(3) air spaces.

  4. Footwear, according to claim 3, characterized in that the spacing means (8) are

  preferably in the form of ribs.

  5. Footwear, according to any one

  claims 3 and 4, characterized in that the

  spacer means (8) extend transversely to

  the longitudinal axis of the elongated element (6).

  6. Footwear, according to any one

  claims 3 and 4, characterized in that the

  means (8) extend parallel to the longitudinal axis

of the elongated element (6).

  7. Footwear, according to any one

  claims 2 to 6, characterized in that the

  means (8) in the form of ribs are advantageously provided with at least one cut-out interruption providing communication with the neighboring air space

  7 delimited by the means (8), or rib, following or previously-

  dant. 8. Footwear, according to any one of claims 1 to 3, characterized in that the sole-

  the first (3) is provided with perforations (9) on all or part of its surface extending above the air space or spaces defined by the means (8) or ribs provided on the elongated element (6) . 9. Footwear, according to any one

  claims 1 to 8, characterized in that the space or spaces delimited between the first sole (3) and the element

  lying elongated (6) are partially filled with a solid material with deodorant and / or desiccant action having prolonged effects over time. 10. Footwear, according to any one of claims 1 to 9, characterized in that the 'element

  elongated (6) is provided, on the one hand, with a part of upper closure delimiting with the lower part a flat addition and, on the other hand, with a suction means

  with valve and a discharge means also with valve, said means opening respectively, the suction means

  piration outside the footwear or inside it and the delivery means, in the form of nozzles, under the sole of the foot and / or the toes,

  as well as possibly near the heel.

  11. Footwear according to any one of claims 1 to 9, characterized in that the provision

  insulation (5) is combined with an air circulation pump arranged in the heel part of the sole and connected by a duct to the air space delimited by the elongated element ( 6), said pump sucking air

  outside or inside the footwear.