ES1243114U - Sole for safety shoes (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Sole (1) for safety footwear, comprising a lower face (1.1) suitable for contact with the ground and an opposite upper face (1.2), characterized in that it comprises - a lower layer (2) of rubber, with anti-slip properties, which in turn comprises - a longitudinal stabilization channel (4) along the entire length from the heel area to the toe area, where said longitudinal channel (4) has a portion (4.1) arranged in the heel area whose shape is triangular and angular section, and; - first transverse channels (5) in at least one area of the lower layer (2); - where between the first transverse channels (5) and the longitudinal channel (4) a series of plugs (6) emerging from the lower face (1.1) of this lower layer (2) are configured, and; - an upper layer (3) formed by expanded polyurethane, which has second transverse channels (7) on the upper face (1.2) of this upper layer (3). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Safety shoe sole

Technical field of the invention

The present invention corresponds to the technical field of footwear, specifically to safety footwear and to the sole thereof.

Background of the Invention

There are certain sectors in which the certain safety conditions that are required for workers include the use of safety shoes that meet certain conditions and characteristics.

In principle, when talking about safety footwear, one usually identifies with footwear to protect workers from the risks that may be encountered in the workplace, thinking as such in an industrial environment and where the footwear has a toe cap against impacts.

However, there are many more risks than the worker must be protected, beyond falling objects, such as, among others, falling to the same level due to a slip. These risks are found in sectors as diverse as the service sector, in activities such as health, education, commerce, transport and storage, hospitality, etc.

Current regulations determine the mandatory chemical and physical characteristics that this type of footwear must meet.

However, there is a drawback in this type of footwear because, in the aforementioned sectors, workers spend a large part of their working day on their feet, and this is footwear that has focused on safety characteristics, neglecting those related to comfort, so that with the passing of the hours it turns out to be a heavy shoe and it increases the fatigue in the feet.

This entails a problem for workers, which in addition to the own discomforts that will appear as the day progresses by wearing so many hours of this type of footwear, can generate health problems such as plantar fasciitis or other pathologies.

No safety footwear has been found in the state of the art that, in addition to safety regulations, has taken into account certain factors that contribute to user comfort and allow, in addition to ensuring safety, a comfortable and comfortable use of footwear.

Description of the Invention

The sole for safety footwear presented here comprises a lower face suitable for contact with the ground and an opposite upper face.

This sole further comprises a lower layer of rubber, which has anti-slip properties. In addition, this lower layer comprises a longitudinal stabilization channel along the entire length from the heel area to the toe area, where said longitudinal channel has a portion arranged in the heel area whose shape is triangular and sectional. angular, and transverse channels in at least one area of the lower layer.

On the other hand, between said transverse channels and the longitudinal channel a series of cleats or pads emerging from the lower face of this lower layer are configured, which coincide with the lower face of the sole.

As for the upper layer, it is made of expanded polyurethane that has second transverse channels on the upper face of this upper layer. This material has a density value of between 0’9 and 1’3 gr / cm3 and a resistance to energy absorption of value greater than or equal to 20J.

With the sole for safety footwear proposed here, a significant improvement in the state of the art is obtained.

This is so, in addition to complying with the regulations for this type of footwear, it has a series of additional technical characteristics thanks to the materials used and the Introduction of both longitudinal and transverse channels in the lower layer, which allow for greater footing stability, effective energy absorption, greater plant comfort and greater biothermal capacity.

All these characteristics increase the feeling of comfort and allow the user to use this type of footwear throughout the working day, reducing muscle fatigue.

That is why it is a very effective sole for safety footwear, since it gives the footwear some very advantageous and suitable characteristics for a comfortable and safe use by the user.

Brief description of the drawings

In order to help a better understanding of the characteristics of the invention, in accordance with a preferred example of its practical embodiment, a series of drawings is provided as an integral part of said description, where, by way of illustration and not limitation, represented the following:

Figure 1.- Shows a bottom plan view of the sole for safety footwear, according to a preferred embodiment of the invention.

Figures 2.1 and 2.2.- Show respective profile views of the sole for safety footwear, according to a preferred embodiment of the invention.

Figure 3.- Shows a view according to section A, of the sole for safety footwear, according to a preferred embodiment of the invention.

Figure 4.- Shows a top plan view of the sole for safety footwear, according to a preferred embodiment of the invention.

Detailed description of a preferred embodiment of the invention

In view of the figures provided, it can be seen how in a preferred embodiment of the invention, the sole (1) for safety footwear proposed here, it comprises a lower face (1.1) suitable for contact with the ground and a upper face (1.2) opposite to the previous one.

It comprises, in turn, a lower layer (2) of rubber and with anti-slip properties and an upper layer (3) formed by expanded polyurethane. The resistance to energy absorption of this material makes it possible to cushion the impacts and return part of the energy absorbed in the tenar zone in the takeoff phase. This reduces muscle fatigue and prevents the appearance of plantar fasciitis.

The bottom layer (2) of the sole (1), in this preferred embodiment of the invention, is made in particular of SBR rubber, which provides an abrasion resistance of less than or equal to 60 mm3, as well as a high resistance slipping due to the fact that it has a coefficient of friction that, on ceramic tiles with an aqueous solution, is> 0.32 in a horizontal plane and> 0.28 in an inclined plane with a slope of 7 °, while the coefficient of friction on a glycerine steel surface has a value> 0.18 in a horizontal plane and> 0.13 in an inclined plane with a slope of 7 °. Both properties allow more than 30% improvement in footprint stability, compared to the soles traditionally used for safety footwear.

Said lower layer (2), as shown in Figure 1, further comprises a longitudinal stabilization channel (4) along the entire length from the heel area to the toe area, which allows control of the pronation and therefore a stabilization of the footprint.

This longitudinal channel (4) has a portion (4.1) arranged in the heel area whose shape is triangular and with an angular section, as can be seen in Figure 3, thereby achieving energy absorption in the heel.

This lower layer (2), in turn, has first transverse channels (5) in at least one area thereof, as shown in Figures 1, 2.1 and 2.2, so that between the first transverse channels ( 5) and the longitudinal channel (4), a series of plugs (6) emerging from the lower face (1.1) of this lower layer (2) are configured. Both the cleats (6) and the first transverse channels (5) improve energy absorption and allow the elimination of water, thus maintaining the foot at a constant temperature, eliminating the metabolic heat produced during the tread and allowing circulation air, which allows us to acquire thermal comfort. The tacos (6) They are designed to obtain the highest possible slip resistance, better stability and a greater plantar support pressure.

In this preferred embodiment of the invention, the first transverse channels (5) are arranged in the area of the approach, as well as in the front area of the sole, but in other embodiments they can be located only in one area of the same.

For its part, as shown in Figure 4, the upper layer (3) comprises second transverse channels (7) on the upper face (1.2) of this upper layer (3). In this preferred embodiment of the invention, these second transverse channels (7) are arranged in the area of the engagement.

These second transverse channels (7) improve the absorption and elimination of water, allowing the foot to be kept at a constant temperature by eliminating the metabolic heat produced during the tread. By allowing air circulation, it collaborates in obtaining thermal comfort.

The described embodiment constitutes only an example of the present invention, therefore, the specific details, terms and phrases used herein are not to be considered as limiting, but are to be understood only as a basis for claims and as a representative basis that provides an understandable description, as well as sufficient information to the person skilled in the art to apply the present invention.

Claims (1)

1- Sole (1) for safety footwear, comprising a lower face (1.1) suitable for contact with the ground and an opposite upper face (1.2), characterized by comprising - a lower layer (2) of rubber, with anti-slip properties, which in turn comprises • a longitudinal stabilization channel (4) along the entire length from the heel area to the toe area, where said longitudinal channel (4) has a portion (4.1) arranged in the heel area whose shape is triangular and angular section, and; • first transversal channels (5) in at least one area of the lower layer (2); - where a series of plugs (6) emerging from the lower face (1.1) of this lower layer (2) are configured between the first transverse channels (5) and the longitudinal channel (4), and; - an upper layer (3) formed by expanded polyurethane, which has second transverse channels (7) on the upper face (1.2) of this upper layer (3). 2- Sole (1) for safety footwear, according to claim 1, characterized in that the first transversal channels (5) are arranged in the area of the approach. 3- Sole (1) for safety footwear, according to any of the preceding claims, characterized in that the first transverse channels (5) are arranged in the front area of the sole. 4- Sole (1) for safety footwear, according to any of the preceding claims, characterized in that the second transverse channels (7) are arranged in the area of the approach. 5- Sole (1) for safety footwear, according to any of the preceding claims, characterized in that the lower layer (2) has an abrasion wear of less than or equal to 60mm3.