Zero point position-determining mechanism for pressurized fluid-driven apparatuses
AssigneeSMC Corporation
InventorToshiharu Wada
Life of this patent
Estimating the term…
Abstract
A pressure fluid-driven apparatus includes a zero point position-determining mechanism, including an oil supply-adjusting knob formed with an arrow-shaped recess for indicating a zero point position, an insert member internally fitted into a hole of the oil supply-adjusting knob, a stopper for setting an assembled state of the oil supply-adjusting knob and the insert member to be at a zero point position, and a first spline section and a second spline section fitted to one another to determine the position so that the zero point position of the recess corresponds to that of a holder.
Claims6
A pressure fluid-driven apparatus having a zero point position-determining mechanism disposed therewith, comprising:
- a knob member provided rotatably on the pressure fluid-driven apparatus and formed with an indicator section for indicating a zero point position;
- insert member internally fitted into a hole of said knob member;
- a zero point position-setting member for regulating a screwing amount between said knob member and said insert member so that a dripping oil amount to be supplied into a fluid passage of said pressure fluid-driven apparatus is zero;
- and
- a positioning member for positioning and holding said insert member so that said indicator section for indicating said zero point position of said knob member coincides with a zero point position of a scale provided on said pressure fluid-driven apparatus;
- wherein said positioning member includes a first engaging section formed on said insert member and a second engaging section formed on said pressure fluid-driven apparatus;
- and
- wherein said zero point position for said knob member indicated by said indicator section and said zero point position of said scale provided on said pressure fluid-driving apparatus are positioned so that they are coincident with each other by fitting said first engaging section and said second engaging section to one another;
- wherein said first engaging section includes a first spline section formed on an inner circumferential surface of said insert member and provided with spline grooves extending along an axial direction over a circumferential direction, and said second engaging section includes a second spline section formed on an outer circumferential surface of an annular projection of a member for constructing said pressure fluid-driven apparatus and provided with spline grooves extending along said axial direction over a circumferential direction.
Dependencies are inferred from the claim text.