Overhead wire tension balancer
AssigneeNHK Spring Co., Ltd.
InventorsToru Kimura, Osamu Sasa
Life of this patent
Estimating the term…
Abstract
An overhead wire tension balancer can prevent rotation of an inner cylinder connected with an overhead wire, without deteriorating rotation preventing function, even if stroke is increased, and does not complicate production steps. A rotation preventing plate is formed at the inside of an inner cylinder, and an opening which cannot rotate relative to the rotation preventing plate and which can relatively move in a condition which passes a long plate, is formed on the rotation preventing plate. The long plate is formed by two long plate pieces in an L shape in which a tip is bent, a hanging portion is formed by this bent portion and prevents the rotation preventing plate from disengaging from the long plate.
Claims5
An overhead wire tension balancer, having cylinders coaxially arranged, comprising:
- a long member that extends to an inside of the innermost cylinder of the cylinders,
- a regulating member that is fixed at an end of the inside of the innermost cylinder of the cylinders, which relatively moves the long member in a longitudinal direction, regulates rotation of the long member in which the longitudinal direction is a rotational axis, and engages with the long member in a condition which prevents the long member from completely pulling out from the inside of the innermost cylinder of the cylinders, and
- a fixing member for fixing an end of the long member to the outermost cylinder of the cylinders,
- wherein the long member is formed by members that are arranged in a direction perpendicular to the longitudinal direction,
- the regulating member has a non-circular opening,
- each of the members penetrates the opening and has an engaging portion at another end thereof for engaging with the opening of the regulating member, and
- the engaging portions of the members are engaged with the opening of the regulating member respectively.
Dependencies are inferred from the claim text.