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US 11,661,994 B2Granted
Manufacturing method for cylinder device
AssigneeHitachi Automotive Systems, Ltd.
InventorsMitsunobu Kashina, Yoshimi Tsuburaya
Life of this patent
Estimating the term…
Abstract
A manufacturing method for a cylinder device which includes a cylinder, a piston, a piston rod, a seal member, and an installing member, the method includes: a welding step for fixing the installing member to the cylinder through electrical resistance welding; a demagnetizing step for demagnetizing at least an opening portion of the cylinder; and an assembling step for assembling the piston, the piston rod, and the seal member in the cylinder through the opening portion.
Claims3
A manufacturing method for a cylinder device which includes:
- a cylinder having one side having an opening portion provided therein;
- a piston provided in the cylinder;
- a piston rod having one side coupled to the piston and the other side extending from the cylinder;
- a seal member provided in the opening portion of the cylinder and configured to seal a working fluid sealed in the cylinder;
- and
- a mounting member provided on an outer circumferential side of the cylinder, the method comprising:
- a welding step for fixing the mounting member to the cylinder through electrical resistance welding;
- a demagnetizing step for demagnetizing at least the opening portion of the cylinder;
- a coating step for coating the outer circumferential side of the cylinder, performed between the welding step and the demagnetizing step;
- and
- an assembling step for assembling the piston, the piston rod, and the seal member to the cylinder through the opening portion, wherein
- in a duration from the coating step to the demagnetizing step, coating and demagnetizing of the cylinder are performed without removing the cylinder from a hanger.
9 more elements
Dependencies are inferred from the claim text.