Insole for footwear

Abstract

Insole (34) for footwear, the insole (34) comprising an anterior arch support (48); and an anterior reinforcing bridge (54) having a raised section (56) for providing resistance against compression of the anterior arch support (48).

Claims

1. An insole for footwear, the insole comprising: an anterior arch support comprising a shock absorbing material or a damping material; an anterior reinforcing bridge having a raised section for providing resistance against compression of the anterior arch support, wherein the raised section is raised vertically upwardly with respect to a general horizontal plane of the insole toward the anterior arch support and comprises a concave surface as seen in an anterior direction of the insole, the concave surface facing away from the anterior arch support, wherein: the raised section as viewed in a vertical direction normal to the general horizontal plane is shaped as an elongated beam in a lateral direction of the insole; and the anterior reinforcing bridge is positioned at a distance from a front tip of the insole that is 30% to 50% of a longitudinal length of the insole; a medial arch support; a lateral arch support; two transverse reinforcing bridges, each having two raised sections for providing resistance against compression of the medial arch support and the lateral arch support, respectively, and each transverse reinforcing bridge shaped as an elongated beam in a lateral direction of the insole as viewed in a vertical direction normal to the general horizontal plane; and two oblique reinforcing bridges inclined with respect to an anterior direction of the insole, each oblique reinforcing bridge comprising one or two raised sections for providing resistance against compression of one or both of the medial arch support and/or the lateral arch support, and each oblique reinforcing bridge shaped as an elongated beam as viewed in a vertical direction normal to the general horizontal plane.

2. The insole according to claim 1, wherein the anterior arch support has a maximum length in a longitudinal direction of the insole that is 10% to 30% of a length of the insole in the longitudinal direction.

3. The insole according to claim 1, wherein the anterior arch support has a maximum length in a lateral direction of the insole that is 40% to 60% of a local width of the insole in the lateral direction where the anterior arch support is provided.

4. The insole according to claim 1, wherein the anterior arch support is positioned with its geometrical center point at a distance from a front tip of the insole that is 35% to 45% of the longitudinal length of the insole.

5. The insole according to claim 1, wherein the raised section of the anterior reinforcing bridge only spans over a partial distance of a width of the insole where the anterior reinforcing bridge is provided.

6. The insole according to claim 1, wherein each of the transverse reinforcing bridges is concave as seen in an anterior direction of the insole.

7. The insole according to claim 1, further comprising: a top layer; a bottom layer; and a bridge layer; wherein the bridge layer comprises the anterior reinforcing bridge.

8. The insole according to claim 7, wherein the bridge layer only comprises the anterior reinforcing bridge.

9. Footwear comprising the insole according to claim 1.

10. The insole according to claim 5, wherein the partial distance is 30% to 70% of a local width of the insole where the anterior reinforcing bridge is provided.

11. An insole for footwear, the insole comprising: an anterior arch support comprising a shock absorbing material or a damping material; a bridge layer comprising an anterior reinforcing bridge having a raised section raised toward the anterior arch support for providing resistance against compression of the anterior arch support, the raised section having a concave surface facing away from the anterior arch support as viewed in an anterior direction of the insole and a convex surface opposed the concave surface and facing the anterior arch support as viewed in the anterior direction of the insole, wherein: the raised section as viewed in a vertical direction normal to the general horizontal plane is shaped as an elongated beam in a lateral direction of the insole; and the anterior reinforcing bridge is positioned at a distance from a front tip of the insole that is 30% to 50% of a longitudinal length of the insole, a medial arch support; a lateral arch support; two transverse reinforcing bridges, each having two raised sections for providing resistance against compression of the medial arch support and the lateral arch support, respectively, and each transverse reinforcing bridge shaped as an elongated beam in a lateral direction of the insole as viewed in a vertical direction normal to the general horizontal plane; and two oblique reinforcing bridges inclined with respect to an anterior direction of the insole, each oblique reinforcing bridge comprising one or two raised sections for providing resistance against compression of one or both of the medial arch support and/or the lateral arch support, and each oblique reinforcing bridge shaped as an elongated beam as viewed in a vertical direction normal to the general horizontal plane.

12. The insole according to claim 1, wherein the anterior reinforcing bridge spans over an entire distance of a width of the insole where the anterior reinforcing bridge is provided.

13. The insole according to claim 1, wherein the anterior reinforcing bridge has a width that is 2% to 6% of the longitudinal length of the insole.

14. The insole according to claim 1, wherein the anterior reinforcing bridge has a width of 5 mm to 15 mm as measured in a longitudinal direction of the insole.

15. The insole according to claim 1, wherein the raised section has a length in the lateral direction that is at least 30% of the local lateral width of the insole where the anterior reinforcing bridge is provided.

16. The insole according to claim 1, wherein the shock absorbing material or damping material is locally provided at a portion of the insole constituting the anterior arch support.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further details, advantages and aspects of the present disclosure will become apparent from the following embodiments taken in conjunction with the drawings, wherein:

(2) FIG. 1: schematically represents a bottom view of a foot;

(3) FIG. 2: schematically represents a lateral side view of bones in the foot;

(4) FIG. 3: schematically represents a top view of an insole;

(5) FIG. 4: schematically represents a bottom view of the insole;

(6) FIG. 5: schematically represents a top view of the insole and reinforcing bridges;

(7) FIG. 6a: schematically represents an anterior view of an anterior reinforcing bridge;

(8) FIG. 6b: schematically represents an anterior view of an alternative anterior reinforcing bridge;

(9) FIG. 7a: schematically represents an anterior view of a transverse reinforcing bridge;

(10) FIG. 7b: schematically represents an anterior view of an alternative transverse reinforcing bridge;

(11) FIG. 8a: schematically represents an anterior view of an oblique reinforcing bridge; and

(12) FIG. 8b: schematically represents an anterior view of an alternative oblique reinforcing bridge.

DETAILED DESCRIPTION

(13) In the following, an insole comprising at least one reinforcing bridge and a footwear comprising the insole will be described. The same reference numerals will be used to denote the same or similar structural features.

(14) FIG. 1 schematically represents a bottom view of a foot 10. A typical foot 10 (here a right foot) comprises an anterior transverse arch or anterior arch illustrated by the lines 12, 14, a lateral longitudinal arch or a lateral arch illustrated by the lines 14, 16, and a medial longitudinal arch or medial arch illustrated by the lines 12, 16.

(15) FIG. 2 schematically represents a lateral side view of bones in the foot 10. The foot 10 comprises five metatarsals or metatarsal bones 18 located between the tarsal bones 20 and the phalanges. The phalanges are the bones in the toes and each toe except the large toe comprises a proximal phalange 22, an intermediate phalange and a distal phalange 24. The large toe only has two phalanges 22, 24. A metatarsal phalangeal joint 26 joins each metatarsal 18 to a respective proximal phalange 22. The metatarsal heads 28 are the ends of the metatarsals 18 closest to the proximal phalanges 22.

(16) As can be seen in FIG. 2, the anterior arch 12, 14 is located below the metatarsal heads 28. The medial arch 12, 16 spans from below the first metatarsal head 28 to below the calcaneus 30. The lateral arch spans from below the fifth metatarsal head 28 to below the calcaneus 30. FIG. 2 further illustrates a vertical direction 32 with respect to the foot 10.

(17) FIG. 3 schematically represents a top view of an insole 34. The insole 34 comprises a toe region 36 and a heel region 38. The insole 34 may be inserted in various types of footwear.

(18) Also illustrated in FIG. 3 is a coordinate system showing an anterior direction 40, a posterior direction 42, a medial direction 44 and a lateral direction 46. The anterior direction 40 may alternatively be referred to as a forward longitudinal direction and the posterior direction 42 may alternatively be referred to as a rearward longitudinal direction. Moreover, since the insole 34 in FIG. 3 is for a right foot 10, the lateral direction 46 may alternatively be referred to as a lateral right direction and the medial direction 44 may alternatively be referred to as a lateral left direction.

(19) The insole 34 comprises an anterior arch support 48, a medial arch support 50 and a lateral arch support 52. Each of the anterior arch support 48, the medial arch support 50 and the lateral arch support 52 is raised vertically with respect to the respective adjacent surfaces of the insole 34.

(20) In this example, the anterior arch support 48 has a general droplet shape where the tip of the droplet points in the posterior direction 42. The anterior arch support 48 is substantially centered in the lateral direction 46 of the insole 34.

(21) The anterior arch support 48 has a maximum length in the longitudinal direction of the insole 34 that is approximately 20% of the length of the insole 34 in the longitudinal direction 40. Moreover, the anterior arch support 48 has a maximum length in the width direction (i.e. in the lateral direction 46) of the insole 34 that is approximately 50%, of the local width of the insole 34 in the lateral direction 46 where the anterior arch support 48 is provided. Moreover, the anterior arch support 48 is positioned with its geometrical center point at a distance from a front tip of the insole 34 that is approximately 40% of the longitudinal length of the insole 34.

(22) As can be seen in FIG. 3, each of the medial arch support 50 and the lateral arch support 52 has a generally arch shaped appearance with an inwardly pointing arc. Each of the anterior arch support 48, the medial arch support 50 and the lateral arch support 52 is successively vertically raised with respect to the respective adjacent surface of the insole 34.

(23) The medial arch support 50 has a length in the longitudinal direction 40 of the insole 34 that is approximately 48% of the length of the insole 34 in the longitudinal direction 40. The lateral arch support 52 has a length in the longitudinal direction 40 of the insole 34 that is approximately 53% of the length of the insole 34 in the longitudinal direction 40.

(24) Each of the medial arch support 50 and the lateral arch support 52 is positioned with its geometrical center point at a distance from a front tip of the insole 34 that is approximately 63% of the longitudinal length of the insole 34. The anterior arch support 48, the medial arch support 50 and the lateral arch support 52 of this implementation comprises a shock absorbing material.

(25) FIG. 4 schematically represents a bottom view of the insole 34 and FIG. 5 schematically represents a top view of the insole 34 and where hidden reinforcing bridges are illustrated with dashed lines. With collective reference to FIGS. 4 and 5, the insole 34 comprises an anterior reinforcing bridge 54. The anterior reinforcing bridge 54 comprises a raised section 56 for providing rigidity, strength and compression resistance to the anterior arch support 48 over time.

(26) In this implementation, the anterior reinforcing bridge 54 has an elongated appearance and extends substantially in the lateral direction 46 of the insole 34. The anterior reinforcing bridge 54 is positioned with its geometrical center point at a distance from a front tip of the insole 34 that is approximately 39% of the longitudinal length of the insole 34. Furthermore, the anterior reinforcing bridge 54 has a width in the longitudinal direction 40 of the insole 34 that is approximately 4% of the longitudinal length of the insole 34 and/or approximately 10 mm.

(27) The insole 34 further comprises two transverse reinforcing bridges 58, 60. Each transverse reinforcing bridge 58, 60 has two raised sections 62 for providing resistance against compression of the medial arch support 50 and the lateral arch support 52, respectively. The transverse reinforcing bridges 58, 60 thus adds rigidity to the medial arch support 50 and the lateral arch support 52 and contributes to maintaining the original shape of the medial arch support 50 and the lateral arch support 52 over time. Moreover, the two transverse reinforcing bridges 58, 60 prevent the insole 34 from bending about a central longitudinal axis.

(28) Each of the two transverse reinforcing bridges 58, 60 has an elongated appearance and extends substantially in the lateral direction 46 of the insole 34. The first anterior transverse reinforcing bridge 58 is positioned with its geometrical center point at a distance from the front tip of the insole 34 that is approximately 57% of the longitudinal length of the insole 34. The second posterior transverse reinforcing bridge 60 is positioned with its geometrical center point at a distance from a front tip of the insole 34 that is approximately 70% of the longitudinal length of the insole 34. Each of the two transverse reinforcing bridges 58, 60 has a width in the longitudinal direction 40 of the insole 34 that is approximately 4% of the longitudinal length of the insole 34 and/or approximately 10 mm.

(29) The insole 34 further comprises two substantially parallel oblique reinforcing bridges 64, 66 inclined with respect to the longitudinal axis 40 of the insole 34. Each of the oblique reinforcing bridges 64, 66 has an elongated appearance and extends at an angle with respect to the longitudinal axis 40 of the insole 34 from a posterior, medial point to an anterior lateral point of the insole 34 at an angle with respect to the longitudinal direction 40 of the insole 34 that is approximately 37°.

(30) The anterior oblique reinforcing bridge 64 extends from a posterior point of the medial arch support 50 to an anterior point of the lateral arch support 52. The posterior oblique reinforcing bridge 66 also extends from a posterior point of the medial arch support 50 to an anterior point of the lateral arch support 52. Each oblique reinforcing bridge 64, 66 has a width of approximately 10 mm.

(31) Each oblique reinforcing bridge 64, 66 comprises two raised sections 68 for providing resistance against compression of the medial arch support 50 and/or the lateral arch support 52. However, one or both of the oblique reinforcing bridge 64, 66 may only comprise one raised section 68 or no raised section 68.

(32) The two oblique reinforcing bridges 64, 66 add rigidity to the medial arch support 50 and the lateral arch support 52 and contribute to maintaining the original shape of the medial arch support 50 and the lateral arch support 52 over time. Moreover, the two oblique reinforcing bridges 64, 66 prevent the insole 34 from twisting about the longitudinal axis 40.

(33) The oblique reinforcing bridges 64, 66 are connected to the transverse reinforcing bridges 58, 60 at their crossing areas. The anterior oblique reinforcing bridge 64 is connected to the anterior reinforcing bridge 54 at their crossing area. As an alternative to connecting the reinforcing bridges 54, 58, 60, 64, 66, all or some of the reinforcing bridges 54, 58, 60 64, 66, may be integrally formed. The reinforcing bridges 54, 58, 60 64, 66, may constitute a bridge layer. A bottom layer may cover the reinforcing bridges 54, 58, 60, 64, 66. A damping layer may further be provided between a top layer and the bridge layer.

(34) FIG. 6a schematically represents an anterior view of an anterior reinforcing bridge 54. As can be seen, the raised section 56 of the anterior reinforcing bridge 54 is raised in the vertical direction 32. The raised section 56 of this anterior reinforcing bridge 54 has a generally arc shaped appearance and spans over substantially the entire width of the insole 34.

(35) FIG. 6b schematically represents an anterior view of an alternative anterior reinforcing bridge 54. The raised section 56 of this anterior reinforcing bridge 54 only spans over a partial distance (e.g. a central section) of the width of the insole 34. Here, the raised section 56 is an intermediate raised section 56 of the anterior reinforcing bridge 54 arranged between two further substantially straight sections 70 of the anterior reinforcing bridge 54. In this implementation, the intermediate raised section 56 has a length in the lateral direction 46 that is approximately 50% of the local lateral width of the insole 34 where the anterior reinforcing bridge 54 is provided.

(36) Each of the anterior reinforcing bridges 54 in FIGS. 6a and 6b is convex as seen in the anterior direction 40 of the insole 34. In these implementations, the anterior reinforcing bridge 54 has a substantially downwardly directed cavity and a substantially upwardly directed bulge.

(37) FIG. 7a schematically represents an anterior view of an anterior transverse reinforcing bridge 58 and/or a posterior transverse reinforcing bridge 60. The transverse reinforcing bridge 58, 60 is concave as seen in the anterior direction 40 of the insole 34 and has a substantially upwardly directed cavity and a substantially downwardly directed bulge. The transverse reinforcing bridge 58, 60 thus has a continuous concave arc shape. In this case, the two ends of the arc shape constitutes the respective raised sections 62 of the transverse reinforcing bridges 58, 60.

(38) FIG. 7b schematically represents an anterior view of an alternative transverse reinforcing bridge 58, 60. Also this design may be used for an anterior transverse reinforcing bridge 58 and/or a posterior transverse reinforcing bridge 60. The transverse reinforcing bridge 58, 60 comprises a substantially straight intermediate section 72 between two outer curved sections constituting the respective raised section 62 of the transverse reinforcing bridge 58, 60. The transverse reinforcing bridge 58, 60 thereby has a general shape of a widened “U”. In this case, the length of the intermediate section of the transverse reinforcing bridge 58, 60 is approximately 48%, of the local lateral width of the insole 34 where the transverse reinforcing bridge 58, 60 is provided. In other words, the intermediate section 72 of the transverse reinforcing bridge 58, 60 spans between the lateral arch support 52 and the medial arch support 50.

(39) FIG. 8a schematically represents an anterior view of an anterior oblique reinforcing bridge 64 and/or a posterior oblique reinforcing bridge 66. The oblique reinforcing bridge 64, 66 may comprise only one raised section 68 connected to a substantially straight section 74. The single raised section 68 of a first anterior oblique reinforcing bridge 64 may for example be arranged to support the medial arch support 50. Alternatively, or in addition, the single raised section 68 of a second posterior oblique reinforcing bridge 66 may for example be arranged to support the lateral arch support 52. The substantially straight section 74 of the oblique reinforcing bridge 64, 66 may span between one or both of the lateral arch support 52 and the medial arch support 50 and one or both of an outer lateral edge of the insole 34.

(40) FIG. 8b schematically represents an anterior view of an alternative design for an anterior oblique reinforcing bridge 64 and/or a posterior oblique reinforcing bridge 66. The oblique reinforcing bridge 64, 66 of this example comprises a substantially straight intermediate section 76 between two outer curved sections constituting the raised sections 68 to support both the medial arch support 50 and the lateral arch support 52.

(41) The oblique reinforcing bridge 64, 66 thereby has a general shape of a widened “U”.

(42) One or each of the oblique reinforcing bridges 64, 66 may however have a continuous concave arc shape as seen in the anterior direction 40 of the insole 34 and have a substantially upwardly directed cavity and a substantially downwardly directed bulge. In this case, the two ends of the arc shape may constitute the respective raised sections 68 of the oblique reinforcing bridge 64, 66.

(43) While the present disclosure has been described with reference to exemplary embodiments, it will be appreciated that the present invention is not limited to what has been described above. For example, it will be appreciated that the dimensions of the parts may be varied as needed. Accordingly, it is intended that the present invention may be limited only by the scope of the claims appended hereto.