Shaft coupling structure and fluid pressure apparatus
AssigneeSMC Corporation
InventorKen TAMURA
Life of this patent
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Abstract
A shaft coupling structure includes a stopper member attached to a piston rod so as to be relatively rotatable and has a plurality of engagement projections and a plurality of slot grooves. The plurality of engagement projections are inserted into the slot grooves, respectively, and include a plurality of inlet grooves and a plurality of inclined engagement grooves extending in a direction inclined from the circumferential direction. The piston rod and a piston member are coupled together through the stopper member so as to be relatively unmovable in the axial direction.
Claims13
A shaft coupling structure configured to couple a shaft member to a counterpart member to be used in combination with the shaft member, the shaft coupling structure comprising:
- a stopper member attached to the shaft member so as to be relatively rotatable, and having a plurality of engagement projections protruding outward from the stopper member, the engagement projections being arranged at intervals in a circumferential direction;
- and
- a plurality of slot grooves provided on a circumference of circle in the counterpart member, the plurality of engagement projections being inserted into the slot grooves, respectively, wherein the plurality of slot grooves include:
- a plurality of inlet grooves opened at an end surface of the counterpart member and having a depth in an axial direction;
- and
- a plurality of inclined engagement grooves connected to the plurality of inlet grooves and extending in a direction inclined from the circumferential direction, the plurality of inclined engagement grooves being engaged with the plurality of engagement projections, and
- wherein the shaft member and the counterpart member are coupled together through the stopper member so as to be relatively unmovable in the axial direction.
A fluid pressure apparatus comprising:
- a piston rod;
- a counterpart member coupled to the piston rod;
- a stopper member attached to the piston rod so as to be relatively rotatable, and having a plurality of engagement projections protruding outward from the stopper member, the engagement projections being arranged at intervals in a circumferential direction;
- and
- a plurality of slot grooves provided on a circumference of circle in the counterpart member, the plurality of engagement projections being inserted into the slot grooves, respectively,
- wherein the plurality of slot grooves include:
- a plurality of inlet grooves opened at an end surface of the counterpart member and having a depth in an axial direction;
- and
- a plurality of inclined engagement grooves connected to the plurality of inlet grooves and extending in a direction inclined from the circumferential direction, the plurality of inclined engagement grooves being engaged with the plurality of engagement projections, and
- wherein the piston rod and the counterpart member are coupled together through the stopper member so as to be relatively unmovable in the axial direction.
Dependencies are inferred from the claim text.