RU206792U1 - Non-slip shoe sole - Google Patents

Abstract

The utility model relates to the footwear industry, specifically to shoe soles created for use in countries with cold climates with persistent ice and snow. a sole having a pattern of deep columns with rectangular corners, and the rubber outsole with a pattern of deep columns with rectangular corners contains abrasive grains in the form of monocrystals with the possibility of their going beyond the horizontal and vertical surfaces of the rubber sole when rubber is abraded or pressed against elastic. soles with a sliding surface by changing the coefficient of friction of the sole surface. 1 ill.

Description

Technology area

The utility model relates to the shoe industry, namely to shoe soles designed for use in countries with cold climates with persistent ice and snow cover.

State of the art

A device is known for a non-slip sole for shoes (patent RU 2739372, IPC А43В 13/14, published on 23.12.2020 No. 36), characterized in that in the heel part the sole has a slight bevel at such an angle that at the initial step the surface of the bevel of the sole is in maximum contact with slippery ground surface, and also has several rows of spikes, of which the first row of spikes is located on the surface of the bevel of the sole parallel to the bevel line, the next row of spikes is located in the main heel of the sole, also parallel to the bevel line immediately behind it, and the last row of spikes is located in the toe parts of the sole, while all the spikes are made of hard-alloy stainless metal and have a prefabricated modular design, consisting of a spike itself, the body of which is a cylinder with an external thread, from one base of which the spike tip is located in the center, and on the other side there is a recess for the key , and a hollow capsule, hermetically pressed for flush into the sole of a shoe having an inner cylindrical cavity for the size of the spike tip, passing into an outer cavity of a larger diameter with an internal thread for the size of the spike body.

The disadvantage of the known device is insufficiently effective adhesion of the sole to the sliding surface.

The closest device is a shoe (patent US 4245406A, IPC А43В 13/14, published 01.20.1981), including a full-size insole covering an inner polyurethane molded sole, connected by polyurethane foam with an outer rubber sole having a pattern of deep posts with rectangular corners.

The disadvantage of the closest device is the insufficiently effective grip of the sole with the sliding surface.

Disclosure of a utility model

The technical result is to increase the adhesion of the sole to the sliding surface by changing the coefficient of friction of the sole surface.

The present technical result is achieved in the device with a non-slip sole for shoes, including a full-length insole covering the inner polyurethane molded sole, connected by polyurethane foam with an external rubber sole having a pattern of deep columns with rectangular corners, and the rubber sole with a pattern of deep columns with rectangular corners contains abrasive grains in the form of monocrystals with the possibility of their going beyond the horizontal and vertical surfaces of the rubber sole during abrasion of the rubber or elastic pressure.

The hallmarks are

rubber sole with a pattern of deep columns with rectangular corners contains abrasive grains in the form of monocrystals, this increases the grip of the sole with the sliding surface by changing the coefficient of friction of the sole surface;

abrasive grains in the form of monocrystals with the possibility of their going beyond the horizontal and vertical surfaces of the rubber sole during rubber abrasion or elastic pressure, which increases the grip of the sole with a sliding not only smooth, but also a rough surface engaging with vertical sections of the sole surface with an increased coefficient of friction sole surface.

Comparative analysis of the features of the claimed solution with the features of the prototype and analogues testifies to the compliance of the declared solution with the "novelty" criterion.

Brief description of the figure

The figure shows a fragment of a section of a non-slip sole for shoes, including 1 - a full-length covering insole; 2 - inner polyurethane molded sole; 3 - outer rubber sole, connected by polyurethane foam; 4 - horizontal surface of the rubber sole; 5 - the vertical surface of the rubber sole; 6 - abrasive grains in the form of single crystals extending beyond the horizontal surface; 7 - abrasive grains in the form of single crystals extending beyond the vertical surface of the sole.

Implementation of the utility model

At the stage of preparation for molding in a heated raw material to obtain a rubber sole, abrasive grains are mixed in the form of single crystals or their fragments 6, 7 with a uniform distribution in the rubber mixture 3. The abrasive material 6, 7 is used in coarse grain size. The cheapest and most accessible abrasive material 6, 7 is considered to be crystalline silicon dioxide (quartz) [3]. The percentage of the addition of abrasive grains to the composition of elastic materials is applied (0.01-80)%, depending on the required increase in the coefficient of friction of the sole surface.

The operation of the device is non-slip shoe sole. A pedestrian's foot, resting on a full-length covering insole 1, transfers the load to a sufficiently light and warm inner polyurethane molded sole 2 and through it to an external rubber sole 3 with a pattern of deep columns with rectangular corners, containing abrasive grains 6, 7 in the form of monocrystals with the possibility going beyond the horizontal 4 and vertical 5 surfaces of the rubber sole when rubber is abraded or pressed firmly. An abrasive-filled rubber outsole and a PU foam outsole combine to provide a lightweight and flexible shoe suitable for a flexible foot with strong traction and long-lasting wear.

Sources of information

1. Patent RU 2739372, IPC А43В 13/14, published on December 23, 2020 No. 36;

2. Patent US 4245406A, IPC А43В 13/14, published 01.20.1981;

3.https://ru.wikipedia.org/wiki/%D0%90% D0% B1% D1% 80% D0% B0% D0% B7% D0% B8% D0% B2% D0% BD% D1% 8B % D0% B5_% D0% BC% D0% B0% D 1% 82% D0% B5% D1% 80% D0% B8% D0% B0% D0% BB% D1% 8B_% D0% B8_% D0% B0% D0% B1% D1% 80% D0% B0% D0% B7% D0% B8% D0% B2% D0% BD% D0% B0% D1% 8F_% D0% BE% D0% B1% D1% 80% D0% B0% D0% B1% D0% BE% D1% 82% D0% BA% D0% B0 (06/18/2021 at 10.07).

Claims (1)

Non-slip shoe sole comprising a full-length insole covering an inner polyurethane molded outsole bonded with polyurethane foam to an outer rubber outsole having a deep rectangular bar pattern, characterized in that the deep rectangular bar pattern rubber outsole contains abrasive grains in the form monocrystals with the possibility of their going beyond the horizontal and vertical surfaces of the rubber sole during abrasion of the rubber or elastic pressure.

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