Abstract: A fixing structure for a foot ring of a chair includes a hub with a central hole formed with internal threads on an inner surface thereof; and a bush being a cylindrical body having a tapered outer surface with external threads. The bush has a shaft hole penetrating along a longitudinal axis of the bush, a groove penetrating through a wall of the bush, and at least one pad provided on an inner surface of the shaft hole. The bush is assembled with the hub by screwing the external threads of the bush with the internal threads of the hub. A supporting post penetrates through the shaft hole. When the bush rotates toward a first direction, the shaft hole is reduced to clamp and fix the supporting post, and when the bush rotates toward a second direction, the shaft hole is enlarged to release the supporting post.

Abstract: An support insole includes a middle medium sandwiched between flexible upper and lower layers, wherein upper layer has a forefoot region with a metatarse protrusion that projects upward from an upper surface of the upper layer to a certain height, a midfoot region with inner and outer arch sides, wherein the inner arch side has an inner arch protrusion that projects upwardly from the upper surface to a certain height and wherein the outer arch side has a plurality of outer arch protrusions that project upwardly from the upper surface to a certain height, a hindfoot region with a heel support protrusion that projects upwardly from the upper surface to a certain height, wherein the top face is dented inwardly so as to form a concave recess such that the support insole is ergonomically designed to provide comfort for a wearer.

Abstract: A toe protector includes a main body made from soft and flexible materials, formed with a big-toe hole, a second toe hole and a partition block located therebetween, the main body having a first peripheral wall of U-shaped cross section extending laterally from a first side of the big-toe hole such that after extension of a big toe through the big-toe hole, the first peripheral wall encloses the big toe, the one side of the big-toe hole and parts of a foot, the main body further having a second peripheral wall of C-shaped cross section extending from a second side of the second toe hole such that after extension of a second toe through the second toe hole, the second peripheral wall encloses the second side of the second toe hole to confine the partition block between the big-toe hole and the second toe hole.

Abstract: An arch support insole includes a basic body made from soft flexible material having a top surface, a palm support portion and an arch support portion, wherein the palm support portion has a rear part, a front part with a width gradually increased from said rear part, an arched lateral side conforming to an arch of human foot, a topmost planar surface and a curved side surface gradually descending from the topmost planar surface. The topmost planar area is spaced apart from the top surface of the basic body at 7 mm˜9 mm. The arch support portion surrounds the rear part and the curved side surface of the palm support portion, has an upwardly curved top surface with a topmost point which is spaced from the top surface of the basic body at 1 mm˜4 mm.

Abstract: An arch support insole includes a basic body made from soft flexible material having a top surface, a heel support portion in form of crescent moon shape and projecting upward from the top surface and a palm support portion in front of the heel support portion. The heel support portion has two distal ends that gradually increase in thickness toward a center area thereof thereby forming a curved surface with an apex at the center area which is spaced from the top surface of the basic body at 5 mm˜9 mm and wherein the palm support portion has an upwardly curved top surface with a topmost point which is spaced from the top surface of the basic body at 1 mm˜6 mm.

Abstract: A shoe insole includes a soft elastomer formed in a shape of an inner bottom surface of a shoe, wherein the soft elastomer includes a front metatarsal section, a mid foot section and a rear heel section, and wherein the rear heel section has a recessed area, and an inner arch concave surface and an outer arch concave surface are respectively defined in two opposite sides of the recessed area; and a hard elastomer combined with the mid foot section and the rear heel section of the soft elastomer, wherein a rear heel section of the hard elastomer has a through-hole, and a portion of material of the soft elastomer is filled in the through-hole, and an inner arch concave surface and an outer arch concave surface are respectively defined in two opposite outer sides of the rear heel section of the hard elastomer.

Abstract: A shoe insole includes a soft elastomer formed in a shape of an inner bottom surface of a shoe, wherein the soft elastomer includes a front metatarsal section, a mid foot section and a rear heel section, and wherein the rear heel section has a recessed area, and an inner arch concave surface and an outer arch concave surface are respectively defined in two opposite sides of the recessed area; and a hard elastomer combined with the mid foot section and the rear heel section of the soft elastomer, wherein a rear heel section of the hard elastomer has a through-hole, and a portion of material of the soft elastomer is filled in the through-hole, and an inner arch concave surface and an outer arch concave surface are respectively defined in two opposite outer sides of the rear heel section of the hard elastomer.

Abstract: A shoe insole includes an elastic main body including a front metatarsal, a mid foot and a rear heel sections, the front metatarsal section having an enclosed forefoot buffer zone, the first recesses being formed in the forefoot buffer zone, the rear heel section having an enclosed heel buffer zone, the second recesses being formed in the heel buffer zone; an elastic pad member combined with the mid foot section and the rear heel section at the bottom surface of the elastic main body, a mid foot section of the elastic pad member having a protruding foot arch portion, the mid foot section of the elastic pad member having the elongated arc-shaped grooves and the through holes, a rear heel section of the elastic pad member having a through hole corresponding to the heel buffer zone; and an upper layer combined with the elastic main body.

Abstract: A healthy insole is disclosed, which includes a first soft elastic member including a front metatarsal section, a mid foot section, and a rear heel section, and formed in a shape corresponding to a shape of an inner bottom surface of a shoe; a hard elastic member disposed at a bottom of the mid foot section and the rear heel section of the first soft elastic member, wherein a first through hole and a second through hole are respectively disposed in an arch portion of the mid foot section and the rear heel section, and a plurality of first recesses are disposed on the surface of the hard elastic member, and an arch elastic part is disposed in the first through hole; and a second soft elastic member disposed in the second through hole of the hard elastic member, wherein a plurality of second recesses are disposed on the surface of the second soft elastic member.

Abstract: A shoe pad includes a soft and elastic layer and an air permeable layer connected onto the soft and elastic layer. The soft and elastic layer includes a front metatarsal section, a mid foot section and a rear heel section. Central portions of the front metatarsal section and the rear heel section have a plurality of cavities. The cavities are discrete from each other for enhancing the structural strength of the shoe pad. The mid foot section has a thickened arch portion, and the arch portion has a plurality of reinforcement structures for enhancing the supporting strength. The periphery portion of the rear heel section is thicker than the central portion of the rear heel section, so when a foot heel steps on the rear heel section, a feeling of stable descending is provided.

Abstract: An adjustable armrest includes an elevation device to allow adjustment of a height of the armrest, a first rocking device to allow adjustment of the armrest to the left or to the right, a movement controlling device to allow front and rear adjustment of the armrest and a second rocking device to allow movement of the armrest.

Abstract: An arm support of a chair which is adjustable to set a height of the armrest and a distance between the armrests includes a support pole, a jacket, a fixed jacket and two toothed members. Each toothed member is provided with teeth along one side thereof. The support pole which is L-shaped has a vertical part and a horizontal part which are formed respectively with an oblong orifice. The jacket has an interior spacing for receiving the vertical part of the support pole. The first toothed member is fixed inside the oblong orifice of the vertical part of the support pole. The jacket is engaged with an elastic button. When a user wants to adjust the arm support to set the height of the armrest, the user may press the elastic button to raise or lower down the jacket with respect to the support pole so as to adjust the height of the armrest. The fixed jacket is fixed on the chair and has an interior spacing for receiving the horizontal part of the support pole.