EP0352650A2 - Insole - Google Patents

Abstract

An insole for a lasted air-cushion shoe or boot is described, in which a part, in particular the edge part, is inelastic and a second part, in particular the ball region, is elastic. In order to be able to manufacture such shoes with conventional lasting machines, it is proposed that the insole has an opening which forms the elastic region, into which a cushion insert is placed, that the cushion insert essentially fills the opening in the insole, that the thickness of the cushion insert is slightly greater than the thickness of the insole and that the cushion insert passes into a flat edge section on the top which rests on the insole. <IMAGE>

Description

The invention relates to an insole in which a part, in particular the edge area, is inelastic and a second part, in particular the ball area, is elastic.

DE-AS 10 00 716 describes that insoles of this type have already been proposed in order to eliminate foot problems. According to DE-AS 10 00 716, however, this is considered to be disadvantageous since the requirements that are to be placed on soles with non-uniformly flexible locations with regard to the orthopedic requirements were not taken into account. A foot pad in the form of an insole or the like is therefore proposed, in which those places where lifting of foot parts or a special foot support is advantageous from an orthopedic point of view are hard-elastic and those places where deep storage of foot parts is desired becomes soft are elastic and slightly yielding under pressure. In this publication, however, it is not described how a sole is to be designed which consists of softer material only at certain points.

An insole is described in DE-AS 27 23 061, which has padding in the ball area, so as to bed the sensitive foot as softly as possible. While a corresponding cushion layer was previously applied to the insole and this cushion layer was then covered with an insole, DE-AS 27 23 061 further develops an insole that is split from the tip and in which an air-permeable layer is formed in the gap between the two insole layers Upholstery part is introduced, which is fixed by appropriate connection of the two insole layers in the gap. In order to sufficiently define the cushion part and the two insole layers formed by the gap cut in the finished insole that difficulties are not to be expected during the lasting process and at the same time a perfect air permeability of the insole is achieved, it is proposed that the gap cut on the underside of the insole by whose hinge area is guided in the direction of the tip over a dimension sufficient to accommodate the cushion part and ends at a distance from the insole tip, and that a flat hinge piece is provided which covers the starting edge of the cut gap between the insole layers with its front end area. The manufacturing process for such an insole is relatively complex. In addition, the greater thickness of the insole due to the padding must be taken into account for the last height in the forefoot. Although a shoe with such an insole is padded in the ball area, it is not an air cushion shoe, since the foot has no direct connection to the padding.

The object of the present invention is therefore to create an insole for a twisted air cushion shoe or boot which can be produced using conventional lasting machines.

This object is achieved in that the insole has an opening forming the elastic region, in which a cushion insert is inserted, that the cushion insert essentially fills the opening in the insole, that the thickness of the cushion insert is slightly larger than the thickness of the insole and that the upholstery insert merges into a flat edge section which rests on the insole. While up to now air cushion shoes have only ever been manufactured using California or moccasin processing or using pads in the sole or in the upper, the insole according to the invention can be mounted in a conventional manner, the upper being able to be attached using a conventional thermoplastic adhesive or teak. As usual, the sole can be attached to the lasting edge of the shoe upper and the insole. The padding of the insole is designed so that it is neither visible nor that it must be taken into account in the forefoot height of the last.

According to a preferred embodiment of the invention, the cushion insert projects downward from the insole. This ensures that when the sole is loaded, the foot does not sink into the opening in the insole and thereby also pulls the flat edge section into the opening. In such a case, the foot would feel the edge of the opening in the insole, which would be detrimental to the wearing behavior.

The shoe has particularly pleasant wearing properties if the cushion insert is made of a soft, elastic, in particular air-permeable foam. Synthetic latex foam has proven to be particularly suitable.

The pleasant wearing properties of this soft elastic material can be exploited in a further development of the inventive concept in that the flat edge section of the cushion insert is essentially flush with the outer contour of the insole. This also saves you an additional insole. The flat edge portion of the cushion insert can also be easily glued to the insole and thus the cushion insert can also be securely fastened in the insole.

According to a preferred embodiment of the invention, in which the insole or the like from a press fiber. exists, under which a hard cardboard is glued in the heel area and, if necessary, a steel joint is arranged between them as additional reinforcement, it is provided that the lower surface of the cushion insert protruding from the insole is flush with the hard cardboard. This means that no compensating means need to be provided in order to be able to securely fasten the surface of the insole to the outsole.

Further features, advantages and possible uses of the invention result from the following description of an exemplary embodiment, which is shown in the drawing. All of the described and / or illustrated features, alone or in any combination, form the subject matter of the invention, regardless of their summary in the claims or their relationship.

• Fig. 1 eine schematische Ansicht einer erfindungsgemäßen Brandsohle von unten, jedoch ohne Polstereinlage,
• Fig. 2 eine schematische Ansicht der in Fig. 1 gezeigten Brandsohle von oben mit einer eingesetzten Polstereinlage und
• Fig. 3 einen Schnitt entlang der Längsachse der in Fig. 2 gezeigten Brandsohle.
• Fig. 4 eine Ansicht auf eine erfindungsgemäße Brandsohle entsprechend der Darstellung in Fig. 3,
• Fig. 5 eine Ansicht von unten auf eine Polstereinlage,
• Fig. 6 einen Schnitt durch die in Fig. 5 gezeigte Polstereinlage entlang der Linie VI-VI und
• Fig. 7 in schematischer Darstellung einen Querschnitt durch einen Schuh mit einer erfindungsgemäßen Brandsohle.

Show it:

• 1 is a schematic view of an insole according to the invention from below, but without a cushion insert,
• Fig. 2 is a schematic view of the insole shown in Fig. 1 from above with an inserted cushion insert and
• Fig. 3 shows a section along the longitudinal axis of the insole shown in Fig. 2.
• 4 is a view of an insole according to the invention as shown in Fig. 3,
• 5 is a bottom view of a cushion insert,
• Fig. 6 shows a section through the cushion insert shown in Fig. 5 along the line VI-VI and
• Fig. 7 shows a schematic representation of a cross section through a shoe with an insole according to the invention.

The insole 1 shown in Fig. 1 initially has a conventional structure and consists of conventional materials such as leather, leather slits, nonwovens made of cellulose or synthetic textile fibers or a pressed fiber material or the like. In the rear area of the shoe sole there is a hardboard under the insole 1 (Pressed cardboard) existing reinforcement 2 glued. As an additional reinforcement, a steel joint 3 can be fastened to the latter between the insole 1 and the reinforcement 2 by means of rivets 4 and 5.

In the area of the forefoot, an opening 6 is punched into the insole 1, into which an elastic cushion insert 7 is inserted.

As can be seen from the figures, the cushion insert 7 has a shape that fits exactly into the opening 6 and fills it. The surface 8 of the cushion insert 7 merges into a flat edge section 9 (FIG. 6) which has such an extent that the entire edge region 10 in the ball area 11 of the insole 1 is covered by the edge section 9 of the cushion insert 7. The edge section 9 of the cushion insert 7 is glued to the edge region 10 of the insole 1, the projecting part of the edge section 9 being cut off such that the edge section 9 of the cushion insert 7 is essentially flush with the outer contour of the insole 1.

The cushion insert 7 consisting of a synthetic latex foam has a thickness which is greater than the thickness of the insole 1. The cushion insert 7 thus protrudes downward from the insole 1 (FIGS. 3 and 4). The thickness of the cushion insert 7 is expediently chosen so that the lower surface 12 of the cushion insert 7 is aligned with the reinforcement 2 made of iron cardboard.

Such an insole 1 can be processed with conventional lasting machines. This is illustrated in the schematic illustration in FIG. 7. A shaft 13 is connected to the insole 1 by means of a last 14 by means of a conventional overtaking and lasting machine. The shaft can be attached using conventional thermoplastic adhesive or teaks. Then an outsole 15 is glued to the lasting edge of the shoe upper 13 and the insole 1. This completes the shoe that is can act any gusseted shoe or boot that is to be designed as a bubble shoe or boot.

Reference symbol list:

• 1 insole
• 2 reinforcement
• 3 steel joint
• 4 rivet
• 5 rivet
• 6 breakthrough
• 7 padding
• 8 surface of 7
• 9 edge section of 7
• 10 edge area of 1
• 11 bale area
• 12 lower surface of 7
• 13 upper
• 14 lasts
• 15 outsole

Claims (7)

1. Insole in which a part, in particular the edge area, is inelastic and a second part, in particular the ball area, is elastic, characterized in that the insole (1) has an opening (6) forming the elastic area, into which a cushion insert ( 7) is inserted that the cushion insert (7) essentially fills the opening (6) in the insole (1), that the thickness of the cushion insert (7) is somewhat larger than the thickness of the insole (1) and that the cushion insert ( 7) at the top (8) merges into a flat edge section (9) which rests on the insole (1). 2. Insole according to claim 1, characterized in that the cushion insert (7) protrudes downwards from the insole (1). 3. Insole according to claim 1 or 2, characterized in that the cushion insert (7) consists of a flexible, in particular air-permeable foam. 4. Insole according to claim 3, characterized in that the cushion insert (7) consists of a synthetic latex foam. 5. Insole according to one of claims 1 to 4, characterized in that the flat edge portion (9) of the cushion insert (7) with the outer contour of the insole (1) is essentially flush. 6. Insole according to one of claims 1 to 5, characterized in that the flat edge portion (9) of the cushion insert (7) is glued to the insole (1). 7. Insole according to one of the preceding claims, wherein the insole consists of a pressed fiber material or the like, under which a reinforcement made of hard cardboard or the like is glued in the heel area and a steel joint is optionally provided as an additional reinforcement in between, characterized in that that the lower surface (12) of the cushion insert (7) protruding from the insole (1) is aligned with the reinforcement (2).

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