Boot
AssigneeHi-Lex Corporation
InventorMasachika Sugimura
Life of this patent
Estimating the term…
Abstract
A boot of extends along an axis X direction and has a cylindrical shape that is extendable and contractable in the axis X direction. The boot includes a bellows portion alternately having a bellows portion-side peak portion and a bellows portion-side valley portion along the axis X direction, and an extending portion connected adjacent to the bellows portion in the axis X direction and provided adjacent to one end and/or an other end of the boot in the axis X direction. The extending portion is formed so that an outer diameter of an end of the extending portion on a side opposite to a side connected to the bellows portion in the axis X direction is smaller than an inner diameter of the bellows portion-side valley portion of the bellows portion.
Claims7
A tubular boot that extends along an axis direction and is extendable and contractable in the axis direction, the boot comprising:
- a bellows portion alternately having a bellows portion-side peak portion and a bellows portion-side valley portion along the axis direction, and
- an extending portion connected adjacent to the bellows portion in the axis direction and provided adjacent to one end or an other end of the boot in the axis direction,
- wherein the extending portion is formed so that an outer diameter of an end of the extending portion on a side opposite to a side connected to the bellows portion in the axis direction is smaller than an inner diameter of the bellows portion-side valley portion of the bellows portion,
- wherein the extending portion is configured so that at least a part of the extending portion is displaced into the bellows portion when the boot is compressed in the axis direction,
- wherein the bellows portion is configured to be compressed in the axis direction after at least a part of the extending portion is displaced into the bellows portion when the boot is compressed in the axis direction, and
- wherein the boot is configured to have a local minimum restoring force state where a restoring force in the axis direction increases after the restoring force decreases, as a compression ratio increases, between an extended state and a compressed state.
A tubular boot that extends along an axis direction and is extendable and contractable in the axis direction, the boot comprising:
- a bellows portion alternately having a bellows portion-side peak portion and a bellows portion-side valley portion along the axis direction, and
- an extending portion connected adjacent to the bellows portion in the axis direction and provided adjacent to one end or an other end of the boot in the axis direction,
- wherein the extending portion is formed so that an outer diameter of an end of the extending portion on a side opposite to a side connected to the bellows portion in the axis direction is smaller than an inner diameter of the bellows portion-side valley portion of the bellows portion,
- wherein the extending portion is configured so that at least a part of the extending portion is displaced into the bellows portion when the boot is compressed in the axis direction,
- wherein the extending portion comprises an extending portion-side peak portion provided adjacent to the bellows portion, an extending portion-side valley portion provided adjacent to the one end or the other end of the boot in the axis direction, and a coupling portion that couples the extending portion-side peak portion and the extending portion-side valley portion,
- wherein the coupling portion is configured so that at least a part of the coupling portion is displaced into the bellows portion when the boot is compressed in the axis direction, and
- wherein the boot is configured to have a local minimum restoring force state where a restoring force in the axis direction increases after the restoring force decreases, as a compression ratio increases, between an extended state and a compressed state.
Dependencies are inferred from the claim text.