RU2789023C1 - Device for modeling individual insoles - Google Patents

Abstract

FIELD: footwear production.

SUBSTANCE: the device for modeling individual insoles relates to footwear production, namely to the production of insoles for inserting in shoes, namely for the individual fitting of the shoe insole to the sole of the person's foot. The device for modeling individual insoles consists of a sealed box with a fixed elastic membrane, with the possibility of placing the person's foot on it, an air release valve button is installed on the case of the box.

EFFECT: the technical problem that this proposal is aimed at solving is to increase the accuracy and simplify the fitting of the shoe insole to the shape of the sole of the person's foot.

1 cl, 3 dwg

Description

The offer relates to the shoe industry, in particular to the production of insoles for insertion into shoes, namely for the individual adjustment of the shoe insole to the sole of the user's foot.

Known shoe insole with a model insert that forms the inner surface of the sole of the shoe, including the base of the insole and the model insert. (Patent RF No. 2160025, MKI A43B 13/38, Publ. 12/10/2000, Convention priority: 07/12/1995 FI 953404).

The disadvantage of this device is the low adaptation of the insole to the user's foot, since in the manufacture of the insole there is no adjustment of the shoe insole to the shape of the sole of the user's foot, a prefabricated insert is used.

The closest to the proposed technical solution for modeling individual insoles to the shape of the sole of the user's foot is fitting the insole to the shape of the sole of the user's foot by applying additional layers of an additional coating to the entire workpiece of the orthopedic insole or part of it. (RF Patent No. 2736253).

For the manufacture of the insole, the polyurethane layer of the insole associated with the workpiece and the coating is heated to a temperature above 40°C, but below the melting point of the polyurethane foam of the workpiece, the coating is detached from the workpiece, the workpiece is adjusted to the shape of the sole of the foot, the polyurethane layer is heated on the coating or on the workpiece along at least on the side that is to come into contact with the workpiece or, respectively, the coating, to a temperature above 40° C., but below the melting point of the polyurethane foam of the workpiece, apply, by pressing, a preheated coating on the workpiece. heating is carried out by means of an oven, a heated plate or roller, in a stream of hot air or by means of microwaves.

The disadvantages of this technical solution are the significant complexity and low accuracy of fitting the shoe insole to the shape of the sole of the user's foot, since the fit is determined by the tactile sensations of the user.

The technical problem to be solved by this proposal is to improve the accuracy and simplify the fit of the shoe insole to the shape of the sole of the user's foot.

To solve this technical problem, a device for modeling individual insoles is proposed, consisting of a sealed box of arbitrary shape, with a fixed elastic membrane, an air release button is installed on the box body.

No other technical solutions of a similar purpose with a similar set of essential features were found by the applicant during a search in the scientific and technical literature and patent documentation. The proposed device for modeling individual insoles for a specialist does not explicitly follow from the prior art and can be made on existing equipment from known materials. The applicant has manufactured and successfully tested prototypes of the proposed device for modeling individual insoles in shoe production technology. Therefore, the applicant considers that the proposal for this application meets the criteria for patentability of the invention "novelty", inventive step and "industrial applicability".

The essence of the proposal is illustrated by drawings, which show a non-exclusive example of the implementation and use of a device for modeling individual insoles.

Fig. 1 shows a general view of the device for modeling individual insoles, Fig. 2 - the process of modeling a shoe insole in statics, Fig. 3 - the process of modeling a shoe insole in dynamics (simulating a step).

The figures indicate: a metal box 1, a button-valve 2, a metal frame 3, screws 4 that hermetically fix an elastic rubber membrane 5 on top of the box body. In Fig 2, 3 shows the process of individual adjustment of the workpiece shoe insole.

Shoe insole modeling is carried out as follows:

Button-valve 2 is normally closed. In the initial state, the button-valve 2 is opened and the air pressure is equalized with atmospheric pressure in a metal box 1, closed with an elastic rubber membrane 5, and the button-valve 2 is released. The user then steps on the rubber membrane in a standing position with a maximum load. Through the button-valve 2, the air is partially vented from the box 1 and the membrane 5, depending on the load applied by the user, sags.

Insoles are made from preformed insole blanks three-quarters long and full size (i.e. this is a finished insole) from a foam composition (EVA) of various saddlery, insole blanks can have any type of coating: leather, artificial leather, multicolor, colorfoam, EVA, etc. .d.

The insole blank with a thickness of 5 mm to 2 cm is pre-molded, and has the appearance of an anatomically correct insole. The insole has a calcaneal bed, laying out a longitudinal internal arch, laying out a longitudinal external arch, a metatarsal roller, additional elements for correcting the foot are possible - wedge-shaped calcaneal arch supports, medium or common with a height of up to 1 cm, calcaneal pronators, medium, common, up to 1 cm high, shortening compensation up to 3 cm. These elements are placed on the insole in proportion to the length of the foot of a particular user.

The insole blank is selected according to the size of the print or outline of the footprint.

Modeling of each insole on the foot is carried out as follows

The sole side of the insole is heated with an industrial hair dryer at a temperature of 300-350°C for 30-50 seconds, or at a temperature of 500-550°C for 15-20 seconds. depending on the size, holding the nozzle of the hair dryer at a distance of 20-25 cm from the surface of the insole.

The heated insole blank is placed on the membrane of the device with the sole part down.

The user steps on the heated insole, pushing the insole into the adapter with the whole body weight for 30-40 seconds (until the insole cools down) statically (Fig. 2) or dynamically, making movements imitating a step (rolling from heel to toe and back). (Fig. 3). There must be at least 10 such movements.

After adaptation, orthopedic insoles are not only functional, but also very comfortable, since the relief of the insole is similar to the individual characteristics of the user's foot.

The Applicant has manufactured and successfully tested prototypes of the proposed device for custom fit shoe insoles.

Claims (1)

A device for modeling individual insoles, characterized in that it consists of a sealed box with a fixed elastic membrane, with a heated pre-molded insole blank placed on it with the sole part down, with the possibility of pressing it in until it cools, and an air release button is installed on the box body, allowing air to bleed out of the box, allowing the membrane to sag depending on the load applied by the user.

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