Apparatus for measuring uniformity and/or dynamic-balance of tire
AssigneesKokusai Keisokuki Kabushiki Kaisha, Nakata Engineering Co., Ltd.
InventorsSigeru Matsumoto, Kazuaki Kondo
Life of this patent
Estimating the term…
Abstract
A measuring apparatus for the uniformity and/or the dynamic-balance of a tire is disclosed. The apparatus comprises a supporting member which is rotated with supporting a tested tire, a holding member which holds said supporting member with allowing to vibrate during rotation thereof and a regulating system which prevents the vibration of the supporting member during rotation thereof. The vibration of the supporting member is prevented by the regulating system for a uniformity measurement while it is allowed during a dynamic-balance measurement.
Claims8
A structure for rotatably supporting a tire, which comprises:
- a frame member;
- a spindle unit consisted by a spindle shaft, a bracket and a hollow shaft vertically and coaxially connected in this order;
- said spindle shaft being rotatably supported by said frame member;
- said hollow shaft having a lower rim at the upper end thereof and an axially extending hollow portion;
- said bracket having an axially extending lock shaft insertion portion to be continued from said hollow portion of the hollow shaft;
- a lock shaft having an upper rim at the upper end thereof, said lock shaft being inserted into said hollow portion and said lock shaft insertion portion so that a tire is pinched between said upper and lower rims, said lock shaft being formed with a plurality of lock grooves on the outer peripheral surface of the lower portion thereof;
- and
- a plurality of lock members provided in said bracket and arranged radially about the axis of said spindle unit, each of said lock members being slidable in the direction perpendicular to the axial direction of said spindle unit toward and away from the axis of said spindle unit, a plurally-stepped lock claw being formed on each of said lock members to be engaged with said lock grooves of the lock shaft so as to lock said lock shaft with respect to the spindle unit when the lock member is slid toward the axis of said spindle unit,
- wherein the axial distance between said upper and lower rims is changed depending upon the relative position of said lock shaft with respect to said spindle unit at the time when said lock shaft is locked to said spindle unit by means of said lock members.
A structure for rotatably supporting a tire, which comprises:
- a frame member;
- a spindle unit having a bracket and a connected axially extending hollow portion;
- said spindle unit rotatably supported by said frame member;
- said hollow portion having a lower rim;
- a lock shaft having an upper rim, said lock shaft being inserted into said hollow portion so that a tire is pinched between said upper and lower rims, said lock shaft being formed with a plurality of lock grooves on the outer peripheral surface of the lower portion thereof;
- and
- a plurality of lock members provided in said bracket and arranged radially about the axis of said spindle unit, each of said lock members being slidable in the direction perpendicular to the axial direction of said spindle unit toward and away from the axis of said spindle unit, a plurally-stepped lock claw being formed on each of said lock members to be engaged with said lock grooves of the lock shaft so as to lock said lock shaft with respect to the spindle unit when the lock member is slid toward the axis of said spindle unit;
- wherein the axial distance between said upper and lower rims is changed depending upon the relative position of said lock shaft with respect to said spindle unit at the time when said lock shaft is locked to said spindle unit by means of said lock members.
Dependencies are inferred from the claim text.