The disclosure provides an electricity generating insert for a piece of footwear, the insert can be removably placed in the heel portion, e.g. under the insole. The insert comprises a multilayer piezoelectric stack that alternatively flexes under the compression-decompression that occurs during locomotion, which flexing causes friction in the stack to generate electricity capable of charging electronic devices and the like, e.g. via a port on the footwear.

The disclosure provides an electricity generating insert for a piece of footwear, the insert can be removably placed in the heel portion, e.g. under the insole. The insert comprises a multilayer piezoelectric stack that alternatively flexes under the compression-decompression that occurs during locomotion, which flexing causes friction in the stack to generate electricity capable of charging electronic devices and the like, e.g. via a port on the footwear.

The implementation improves in the best possible way the integration between the insole and a modified sock, different than those currently known. The present implementation describes an insole-sock type insert for shoes, which presents a novel configuration that consists of an insole, which has a short, medium, or modified sock attached to it, totally or partially, within the extension of the insole; a short, medium, or modified sock, partially attached to the insole, remaining loose or free in the front part where the toes go and/or part of the instep as well as the front part of the foot, and; an attachment mechanism between the insole and the short, medium, or modified sock, which allows for their attachment, where such mechanism is a seam, Velcro, adhesive, or any other type of method that has the same function.

A shoe insole apparatus capable of buffering and massaging includes a pad part laid on a bottom surface inside a shoe and a buffering part which adheres to a portion including a central portion to a heel portion of the pad part and absorbs shock applied to a heel of a wearer, wherein the buffering part includes a body part of which a height decreases from the heel portion of the pad part toward a ball portion, a buffering groove which is positioned in an upper portion of the heel portion of the pad part, passes through the body part, and is formed in a quadrangular shape, and a plurality of buffering plates which are formed to extend to connect two inner surfaces facing each other among inner surfaces of the buffering groove and are in contact with the heel of the wearer.

A shoe insole apparatus capable of buffering and massaging includes a pad part laid on a bottom surface inside a shoe and a buffering part which adheres to a portion including a central portion to a heel portion of the pad part and absorbs shock applied to a heel of a wearer, wherein the buffering part includes a body part of which a height decreases from the heel portion of the pad part toward a ball portion, a buffering groove which is positioned in an upper portion of the heel portion of the pad part, passes through the body part, and is formed in a quadrangular shape, and a plurality of buffering plates which are formed to extend to connect two inner surfaces facing each other among inner surfaces of the buffering groove and are in contact with the heel of the wearer.

An insulating shoe insert including a core layer formed of a cellular material, and a top layer and a bottom layer bonded to opposing sides of the core layer, respectively, the top layer and the bottom layer being configured as thin sheets of aromatic polyamide material such that the top layer and bottom layer cooperate with the core layer to create a heat transfer resistance sufficient to resist transfer of heat through the core layer.

An insole for ergonomic shoes according to an embodiment of the present disclosure, including: a plurality of first polygonal grooves that are formed to be arranged in polygonal shapes on a lower surface of the insole; a first wall portion forming a rim of the first polygonal groove; and a second polygonal groove that is disposed in a pressure distribution portion, which is a part of an inner and lower surface of the insole, and is formed of a rim including a second wall portion having a height lower than a height of the first wall portion.

Provided is an insole-type electronic device wherein the electronic module is not susceptible to impact and/or load due to walking or running. The insole-type electronic device is an electronic device wherein an electronic module has been incorporated in the insole that is laid on the midsole of a shoe and contacts the sole of the foot. The insole-type electronic device has an insole body with the shape of a normal insole. Said insole body has a heel-protecting part that extends upward from the back end of the heel section of the insole body along the perimeter of the back end of the heel section. Additionally, the insole-type electronic device has an electronic module that is housed in the heel-protecting part.

Provided is an insole-type electronic device wherein the electronic module is not susceptible to impact and/or load due to walking or running. The insole-type electronic device is an electronic device wherein an electronic module has been incorporated in the insole that is laid on the midsole of a shoe and contacts the sole of the foot. The insole-type electronic device has an insole body with the shape of a normal insole. Said insole body has a heel-protecting part that extends upward from the back end of the heel section of the insole body along the perimeter of the back end of the heel section. Additionally, the insole-type electronic device has an electronic module that is housed in the heel-protecting part.

An insole for ergonomic shoes according to an embodiment of the present disclosure, including: a plurality of first polygonal grooves that are formed to be arranged in polygonal shapes on a lower surface of the insole; a first wall portion forming a rim of the first polygonal groove; and a second polygonal groove that is disposed in a pressure distribution portion, which is a part of an inner and lower surface of the insole, and is formed of a rim including a second wall portion having a height lower than a height of the first wall portion.