ES2310473B1 - TROTIN FOR FOOTWEAR. - Google Patents

Abstract

Shoe trot, applied to the underside of a rigid sole that includes a concave front area and a Convex rear zone, comprising two leaf springs, a first pier that emerges from the toe area and reaches the zone of enfranque and a second wharf that emerges from the zone of close and reach the heel area, presenting said first spring a radius concavity greater than the radius of concavity of the front area of the rigid sole and at least two points of support, one fixed front and at least one elastic back that acts in compression, said second spring having a convexity of radius smaller than the convexity radius of the rear area of the rigid sole and at least two points of support, a previous one fixed and at minus one elastic back that acts in compression.

Description

Shoe trotter.

Background of the invention

Currently, there are devices damping and / or stress recovery for coupling to footwear, intended to facilitate the act of walking, either walking or running

However, most of these devices are  they generally refer to basically linear action springs as well as individual or, in the end, independent, that they don't have in account or do not take advantage of the lever dynamics involved in the walking action.

On the other hand, document ES 2228209 discloses a trotter comprising two springs of crossbow type that they emerge from the toe of the shoe and reach the places where the pressure is made, one back to the heel and another front Until the start.

This prior art trotter functions as a catapult that throws a weight and describes a parable in its trajectory. It is the combination of a first lever gender and a weight scale. Both combined, take advantage of the inertia of descent as a force of ascent.

However, when using this technique trotter previous in the normal action of walking, some forces are generated undesirable on the tip of the shoe at the beginning of its application on the floor by the heel part, because said spring butt reaches the toe of the shoe. In addition, both docks Front and back emerge from the toe of the shoe, which generates a mutual link between both springs that in practice complicates the design of each of the springs because the choice of characteristics of one of them influences the choice of characteristics of the other to achieve a specific behavior of the trotter.

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Summary of the invention

The object of the present invention is therefore Both a shoe trot with improved features.

The trotter of the invention is intended to be  applied to the underside of a rigid sole of a shoe, said rigid sole including a front area generally concave and a generally convex rear zone.

The trotter of the invention comprises two springs first and second crossbow type, of which the first spring emerges substantially from the toe area of said sole rigid and substantially reaches the area of the said rigid sole and the second spring emerges substantially from the area of wrapping said rigid sole and substantially reaches the heel area of said rigid sole.

Said first spring has a concavity of radius greater than the concavity radius of the front area of the rigid sole and at least two support points, specifically one point fixed front support that joins said first spring to the sole rigid and at least one elastic rear support point acting on compression.

Said second spring has a convexity of radius smaller than the convexity radius of the rear area of the rigid sole and at least two support points, specifically one point fixed front support that joins said second spring to the sole rigid and at least one elastic rear support point acting on compression.

Said second spring also has a piece of support, or heel, in its rear end zone. This piece of support can be either a piece of wood, plastic, metal or similar, attached to said second spring, or an extension of said second pier.

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Brief description of the drawings

Figure 1 is a schematic elevation view side of a stiff shoe sole that includes the trotter of the invention according to a first embodiment.

Figure 2 is a schematic plan view from above the front of a second embodiment of the trotter of the invention.

Figure 3 is a schematic plan view from above a third embodiment of the trotter of the invention.

Figure 4 is a schematic elevation view side of the rear of a fourth embodiment of the trotter of the invention.

Detailed description of the invention

With regard initially to figure 1, in it a rigid sole 1 of shoe is shown which includes a trotter of the invention according to a first embodiment of the invention.

Said rigid sole 1 includes a front zone 3 generally concave and a rear zone 5 generally convex

Said trot according to a first embodiment of the  invention comprises two first 7 and second 9 springs of type of leaf spring, from which the first spring 7 emerges substantially from the toe area of said rigid sole 1 and arrives substantially up to the area of the said rigid sole 1 and the second spring substantially emerges from the zone of approach of said rigid sole 1 and substantially reaches the area of heel of said rigid sole 1.

Said first spring 7 has a concavity of  radius greater than the concavity radius of the front zone 3 and three points 11, 13, 15 support, specifically a support point 11 fixed front, formed by a screw 23 screwed to a nut 25 embedded in said rigid sole 1, which joins said first spring 7 to said rigid sole 1, and two subsequent support points 13, 15 formed by two rubber elastic blocks adhered to said rigid sole 1 on one side and said first spring 7 on the side opposite.

Said second spring 9 has a convexity radius smaller than the convexity radius of the rear zone 5 and three two points 17, 19, 21 support, specifically a point 17 of fixed front support, formed by a screw 27 screwed to a nut 29 embedded in said rigid sole 1, which joins said second spring 9 to said rigid sole 1, and two supporting points 19, 21 later formed by two elastic rubber blocks adhered to said rigid sole 1 on one side and to said second spring 9 on the opposite side.

Said second spring 9 also has a piece 31 support, or heel, in its rear end zone. That piece 31 support is made of wood.

Referring now to figure 2, in it a first spring 7 'of a second embodiment of the trotter of the invention.

In this second embodiment of the trotter of the invention, the rubber blocks of said support points 13, 15 according to the first embodiment described above have been replaced by an intermediate crossbow 33, smaller than said spring 7 ', arranged with the same operational orientation as said first spring 7 '.

Said intermediate crossbow 33 has a chamfer 35 on one side of its free end, intended to compensate for a pressure unbalanced on the trotter. That is, many people tend to exert more pressure either on the inner flank or on the outer flank of the shoe when walking. Said cutout 35 is then provides on the side opposite the one on which it exerts more pressure, in order to achieve greater stability.

Figure 2 also shows two holes through 37 for the passage through the screws (two in this realization) which will form the fixed anterior support point of said first spring 7 ', as well as two through holes 39 for passage to its through the screws (two in this embodiment) that will join said intermediate crossbow 33 to said first spring 7 'and will form the support point of said intermediate crossbow 33.

Those skilled in the art will appreciate that such intermediate crossbow configuration can also be applied to second spring of a trotter according to the invention.

Figure 3 shows first 7 '' springs and second 9 '' crossbow type of a third embodiment of the trotter of the invention, analogous to said springs first 7 and second 9 of crossbow type of the first embodiment of the trotter of the invention, but which also include perimeter edges lengths 41 of rubber that add a variable support point. Said edges 41 have a spherical cap cross section. in this embodiment, although its cross section may adopt other forms.

Figure 3 also shows two holes through 43 for the passage through the screws (two in this realization) which will form the fixed anterior support point of said first spring 7 '', and also two through holes 45 for the passage through the screws (two in this embodiment) that will form the fixed anterior support point of said second spring 9 '', thus as two through holes 47 for the passage through them screws (two in this embodiment) that will attach a heel to said second spring 9 ''.

Finally, referring to Figure 4, it shows a second spring 9 '' 'of a fourth embodiment of the trotter of the invention.

Said second spring 9 '' 'includes a section main dock 53 proper that extends for its free end, initially in a first section 49 that extends down and then in a second section 51 that extends forward, so that said sections first 49 and second 51 form the heel.

In this embodiment, said main sections 53, first 49 and second 51 are made integral, of steel and of the same thickness along its length. However, said main sections 53, first 49 and second 51 may not be integral, be of materials other than steel (independently of each other), and vary their thickness along of its length, depending on the specific application of the trotter

Naturally, the principle remains the same of the invention, the embodiments and the details of construction can be varied widely with respect to described and illustrated purely by way of non-limiting example, without going beyond the scope of the invention as defined in the attached claims.

As an example, the attached figures show a preferred contour for the trotters, which corresponds essentially to the contour of a sole, truncated by the part lead. However, the outline of the trotters is not Limited to this form.

Claims (4)

1. Shoe trot, intended to be applied to the underside of a rigid sole (1) of a shoe, said rigid sole (1) including a generally concave front area (3) and a generally convex rear area (5), characterized in that it comprises two first (7, 7 ', 7'') and second (9, 9'',9''') springs of spring type, of which the first spring (7, 7 ', 7'' ) substantially emerges from the toe area of said rigid soleplate (1) and substantially reaches the inlet zone of said rigid soleplate (1) and the second spring (9, 9 '', 9 ''') substantially emerges from the zone of said rigid sole (1) and substantially reaches the heel area of said rigid sole (1), said first spring (7, 7 ', 7'') having a concavity of radius greater than the radius of concavity of the front area (3) of said rigid sole (1) and at least two support points (11, 13, 15), specifically a fixed anterior support point (11) that joins said first wall and (7, 7 ', 7'') to said rigid sole (1) and at least one point (13, 15) of elastic back support acting in compression, and said second spring (9, 9'', 9) ''') a convexity of a radius smaller than the convexity radius of the rear area (S) of said rigid soleplate (1) and at least two supporting points (17, 19, 21), specifically a point (17) of fixed front support that joins said second spring (9, 9 '', 9 ''') to said rigid sole (1) and at least one point (19, 21) elastic rear support acting in compression, further comprising said second spring (9, 9``, 9 ''') a piece (31; 49, 51) of support, or heel, in its rear end zone. 2. Shoe trot according to the claim 1, wherein said at least one foothold (13, fifteen; 19, 21) elastic back of said first spring (7, 7 ', 7' ') and / or said second spring (9, 9``, 9 '' ') comprises a block of rubber adhered to said rigid sole (1) on one side and to said first spring (7, 7 ', 7' ') and / or said second spring (9, 9' ', 9' '') on the opposite side. 3. Shoe trot according to the claim 1, wherein said at least one foothold (13, fifteen; 19, 21) elastic back of said first spring (7, 7 ', 7' ') and / or said second spring (9, 9``, 9 '' ') comprises a crossbow intermediate (33), smaller than said first spring (7, 7 ', 7' ') and / or said second spring (9, 9``, 9 '' '), arranged therewith operational orientation than said first spring (7, 7 ', 7' ') and / or said second spring (9, 9``, 9 '' '). 4. Shoe trot according to a any of the preceding claims, wherein said first spring (7, 7 ', 7' ') and / or said second spring (9, 9' ', 9' '') they also include longitudinal perimeter edges (41) of rubber.