PUMP OR HIGH-HEELED SHOE

Abstract

A pump or high-heeled shoe (100) with an insole (1) and a heel (4), wherein the insole (1) has a front insole (2) located in a forefoot region (20) and a rear insole (3) extending across a midfoot region (21) and a rearfoot region (22), and at least the rear insole (3) is produced from a fiber-reinforced plastic material.

Claims

1-10. (canceled)

11. A shoe comprising: an insole including a front insole arranged in a forefoot region of the shoe; and a rear insole separately formed from the front insole, the rear insole extending over a midfoot region of the shoe and a rearfoot region of the shoe; and wherein at least the rear insole is made of a fiber-reinforced plastic.

12. The shoe according to claim 11, wherein the front insole and the rear insole are designed as two separate parts, which are partially overlapping in the forefoot region.

13. The shoe according to claim 11, wherein an underside of the rear insole between a heel of the shoe and the front insole is at least partially visible from outside the shoe.

14. The shoe according to claim 11 further comprises a footbed and a shoe upper are provided on an upper side of at least the rear insole.

15. The shoe according to claim 11 further comprises a plug connection provided for a firm connection between a heel of the shoe and the rear insole.

16. The shoe according to claim 15, wherein the plug connection comprises an interference fit between at least one protruding pin and a correspondingly arranged recess.

17. The shoe according to claim 11, wherein all parts of the shoe are made of non-metallic materials.

18. The shoe according to claim 11, wherein the front insole includes a recess on an upper side thereof, into which a cushioning element is inserted.

19. The shoe according to claim 11 further comprises an outsole arranged on an underside of the front insole, and the front insole rests with the underside on the outsole.

20. The shoe according to claim 11, wherein the fiber-reinforced plastic is carbon fiber.

21. A shoe comprising: a heel; and an insole comprising: a front insole arranged in a forefoot region of the shoe; a rear insole separately formed from the front insole, the rear insole extending over a midfoot region of the shoe and a rearfoot region of the shoe; wherein the front insole and the rear insole are partially overlapping in the forefoot region of the shoe; and wherein any one of or any combination of the front insole and the rear insole are made of a fiber-reinforced plastic.

22. The shoe according to claim 21, wherein an underside of the rear insole between the heel of the shoe and the front insole is at least partially visible from outside the shoe.

23. The shoe according to claim 21 further comprises a footbed and a shoe upper are provided on an upper side of at least the rear insole.

24. The shoe according to claim 21 further comprises a plug connection provided for a firm connection between the heel of the shoe and the rear insole.

25. The shoe according to claim 24, wherein the plug connection comprises an interference fit between at least one protruding pin and a correspondingly arranged recess.

26. The shoe according to claim 21, wherein all parts of the shoe are made of non-metallic materials.

27. The shoe according to claim 21, wherein the front insole includes a recess on an upper side thereof, into which a cushioning element is inserted.

28. The shoe according to claim 21 further comprises an outsole arranged on an underside of the front insole, and the front insole rests with the underside on the outsole.

29. The shoe according to claim 21, wherein the fiber-reinforced plastic is carbon fiber.

Description

[0032] An exemplary embodiment of the invention is explained in more detail below with reference to the figures. There are schematically shown in:

[0033] FIG. 1 A perspective view of a heeled shoe according to the invention;

[0034] FIG. 2 Another perspective view of the heeled shoe shown in FIG. 1;

[0035] FIG. 3 An exploded view of the heeled shoe shown in FIG. 1;

[0036] FIG. 4 A detailed view of a heel and a rear insole of a heeled shoe shown in FIG. 1 in an exploded view; and

[0037] FIG. 5 A detailed view of a front insole and a cushioning element of the heeled shoe shown FIG. 1 in an exploded view.

[0038] FIGS. 1 and 2 each show a schematic view of the heeled shoe 100 according to the invention. The heeled shoe 100 primarily includes an insole 1, a heel 4 and a shoe upper 6. Additionally, above the insole 1, particularly on a side of the insole 1 facing the person wearing the shoe 100, a footbed 5 is provided, which is substantially adapted to the dimensions of a human foot.

[0039] The heeled shoe 100 is characterized by the fact that the footbed 5, or a foot within the shoe, is positioned at least 2 cm higher in a rearfoot region 22 than in a forefoot region 20. This is primarily achieved through the arrangement and design of the heel 4. The forefoot region 20 extends in the longitudinal direction of the heeled shoe 100 from a distal end of the toes to approximately a distal region of the metatarsal bone. The midfoot region 21 extends in the longitudinal direction of the heeled shoe 100 from approximately the distal metatarsal bone to a distal end of the heel joint. The rearfoot region 22 extends in the longitudinal direction of the heeled shoe 100 from approximately the distal end of the heel joint to the proximal end of the heel.

[0040] The heeled shoe 100 has a distal or front half and a proximal or rear half, separated by a central transverse axis arranged across its longitudinal extension, with the central transverse axis located approximately in the region of the proximal metatarsal bones. Furthermore, the heeled shoe 100 has a lateral outer foot side and a medial inner foot side, separated by a longitudinal axis.

[0041] The insole 1 together with the heel 4, serves as a load-bearing structure of the heeled shoe 100, providing the shoe with stability and shape retention. The insole 1 is designed as a relatively thin, flat and partially curved plate, in particular, with a shape corresponding to the foot or footbed. It extends, in particular, from the forefoot region 20 through the midfoot region 21 to the rearfoot region 22. The shoe upper 6, also referred to as the shaft, is attached to the insole 1. Typically, an outsole is arranged on the underside of an insole; in the present case, an outsole 7 is provided only in the forefoot region 20.

[0042] The insole 1, as shown particularly in FIG. 3, is divided into two parts and comprises a front insole 2 arranged in the forefoot region 20 and a separately formed rear insole 3 extending over the midfoot region 21 and the rearfoot region 22. The two-part design of the insole 1, on the one hand, allows for the flexibility required in the forefoot region 20 for comfortable wear and secure foot rolling, while, on the other hand, also achieving the stability and rigidity needed in the rearfoot region 21 for secure standing and walking, thereby maintaining the shape of the heeled shoe 100. In this way, the rear insole 3 forms a rigid foundation for supporting the shoe 100, while the front insole 2, as a relatively flexible element, allows for a certain degree of bending and twisting of the heeled shoe 100 while walking.

[0043] The heeled shoe 100 thus only makes contact with the ground on which the shoe stands through a so-called heel tip 8 located on the heel 4 and the outsole 7 arranged on the underside 18 of the front insole 2.

[0044] To achieve sufficient stability and strength, particularly for the rear insole 3, while simultaneously maintaining a relatively thin-walled profile of the load-bearing plate, it is proposed according to the invention that at least the rear insole 3 is made of a fiber-reinforced plastic. The reinforcing fibers embedded in the plastic can be arranged in a plurality of layers; for example, two fiber layers are aligned in the direction of the longitudinal extension of the rear insole 3 and at least one other fiber layer is arranged at a different angle, for example at a 45 angle to the longitudinal extension. The number of fiber layers can vary, especially decreasing towards the forefoot region, thereby increasing flexibility in the forefoot. The rear insole 3, which is thus formed as a particularly thin-walled shell with a material thickness of only about 1.8 mm, not only provides a particularly attractive appearance of the heeled shoe 100, but also the stability required for comfortable and secure wear.

[0045] The fibers in to reinforce the plastic can be industrially manufactured fibers, particularly carbon fibers. Natural fibers, such as flax, are particularly preferred. This choice particularly aligns with the desire for sustainability and improved biodegradability of new products.

[0046] As shown particularly in FIGS. 2 and 3, the rear insole 3 has an underside 13, which is visible from the outside, at least in the region between the heel 4 and the front insole 2. This means that in this region, there is no additional sole or covering material beneath the insole. As a result, the heeled shoe 100 can be given a further tapering and slenderness in this region, which is often desired.

[0047] For a firm connection between the rear insole 3 and the front insole 2, it is provided in the example shown that the two sole parts 2, 3 are arranged in an overlapping manner in the forefoot region 20, particularly in the front region 15 of the rear insole 3.

[0048] For an equally firm connection in the rearfoot region 22 of the rear insole 3, in particular, between the rear insole 3 and the heel 4, a plug connection 10 is provided, as illustrated, in particular, in FIG. 4. The plug connection 10 is designed as an interference fit between three pins 11a, 11b, 11c, protruding on an upper side of the heel 4, and three corresponding recesses 12a, 12b, 12c arranged to match the pin layout.

[0049] The pins 11a, 11b, 11c are arranged in a triangular configuration, which is particularly advantageous for the stability of the connection. In this context, all three pins have a round cross-section and are straight or cylindrical along their length, but they are angled relative to the upper side 19 of the rear insole 3. Therefore, while the pins 11a, 11b, 11c are inclined toward the rear end of the heeled shoe 100 concerning the upper side 19, they appear to stand essentially upright when considering the entire shoe 100, due to the inclination of the rear insole 3 towards the front insole 2. This allows for particularly easy insertion and assembly of the rear insole 3, especially the recesses 12a, 12b, 12c, and the pins 11a, 11b, 11c arranged therein, during manufacturing. To enhance the strength, the pins 11a, 11b, 11c are additionally adhesively bonded to the rear insole 3 within the recesses 12a, 12b, 12c. This creates a particularly strong connection between the rear insole 3 and the heel 4.

[0050] As shown particularly in FIG. 5, the front insole 2 has a flat recess 16 on its upper side 17 facing the footbed 5, into which recess a cushioning element 9 is inserted.

[0051] The cushioning element 9 is designed as a flat shock insert that corresponds in size and shape to the recess 16. In particular, the approximately 10 mm thick cushioning element 9 extends over most of the forefoot region 20, particularly over nearly the entire width and length of the front insole 2. To prevent slippage, the cushioning element 9 is fixed in the recess 16 by means of an adhesive. Additionally, the cushioning element 9 can also be adhesively bonded to the rear insole 3. The cushioning element 9 is made from a material softer than the front insole 2, allowing for a certain degree of front foot immersion during walking and the associated rolling motion of the foot.

[0052] It should be noted that in this example, in addition to the rear insole 3, all other components of the heeled shoe 100, such as the front insole 2, the heel 4, the footbed 5 and the shoe upper 6, can also be made from sustainable and biodegradable materials, particularly non-metallic materials. Thus, in this example, the heel 4, the front insole 2, and the cushioning element 9 are made from expanded thermoplastic polyurethane, or ETPU for short. The outsole 7 and the heel tip 8 are made of rubber, as usual.

[0053] It should be understood that the main claim is not limited to the example described above, but rather that the heeled shoe can be manufactured or designed in other configurations, not described.

LIST OF REFERENCE NUMERALS

[0054] 100 Heeled shoe [0055] 1 Insole [0056] 2 Front insole [0057] 3 Rear insole [0058] 4 Heel [0059] 5 Footbed [0060] 6 Shoe upper, shaft [0061] 7 Outsole [0062] 8 Heel tip [0063] 9 Cushioning element [0064] 10 Plug connection [0065] 11a Pin [0066] 11b Pin [0067] 11c Pin [0068] 12a Recess [0069] 12b Recess [0070] 12c Recess [0071] 13 Underside [0072] 14 Upper side [0073] 15 Front region [0074] 16 Recess [0075] 17 Upper side [0076] 18 Under side [0077] 19 Upper side [0078] 20 Forefoot region [0079] 21 Midfoot region [0080] 22 Rearfoot region