Patent ID: 9038496
Filing Date: 2015-05-26
Classification: F16C,Y10T

Abstract:
1. An adjusting device comprising: a rod; a holder which is movably disposed in the length direction of the rod; a first spring fitted to the rod to bias the holder in a given position; a lock piece provided movably between an unlock position where the lock piece protrudes from the holder in a direction perpendicular to an axial direction and does not constrain the relative motion of the holder and the rod and a lock position where the lock piece is pushed in the holder and constrains the relative motion of the holder and the rod; a lock-discriminating member protruding from a periphery of the holder in the direction perpendicular to the axial direction; a flexible cover which covers the periphery of the holder including the lock-discriminating member and the lock piece, the cover having a cylindrical portion extending over at least a part of the lock piece and a bead portion extending over the lock-discriminating member and extending from one end of the cylindrical portion, wherein the lock piece has an upper face, the lock-discriminating member has an upper face, and the lock piece does not protrude from the periphery of the holder at the lock position and the lock piece protrudes from the periphery of the holder such that the upper face of the lock piece is disposed at about the same height as the upper face of the lock-discriminating member at the unlock position; an engaging claw extending radially outwardly from a lower outer surface of the lock piece to engage with the holder; a slider slidably connected at the periphery of the holder; a tapered face formed in an upper face of a front face of the slider; a second spring interposed between a back face of the slider and a front end of a slider holding portion, the second spring biasing the slider toward a back of the lock piece; a knob piece extending from the slider to enable manual operation of the slider, the knob piece is disposed over an upper part of the tapered face and holds down the upper face of the lock piece when in a locked state; protrusions extending from an upper end of a front face of the lock piece, and wherein an under face of the protrusions is tapered and contacts the tapered face of the slider, so that the lock piece receives an energizing force of the second spring through the slider and is energized upward in the direction perpendicular to the axial direction toward the unlock position, wherein an upper face of each of the protrusions is a flat plane which contacts a lower face of the slider so as to enable the slider to slide toward the lock piece when the lock piece is inserted into the holder; and wherein in the lock piece above the flat plane of the protrusions, an inclined plane faces downwardly toward the flat plane, wherein when the lock piece is in the unlock position, the cylindrical portion and the bead portion are flush with one another, and when the lock piece is in the lock position, the bead portion extends annularly outwardly from the cylindrical portion.