Hydraulic accumulator
AssigneeHydac Technology GmbH
InventorsArmin Kort, Herbert Baltes
Life of this patent
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Abstract
A hydraulic accumulator, particularly a piston-type accumulator, includes an accumulator housing (1) which defines a longitudinal axis (9), is provided with an opening that is concentric with the longitudinal axis (9) and is closed by means of a lid (11). The lid is secured in a form-fitting manner against axial forces by a wall portion (25) of the accumulator housing (1). The housing encompasses the lid and is radially deformed towards the inside. The hydraulic accumulator also includes at least one part (39) that is deformed perpendicular to the longitudinal axis (9) secure the lid (11) in a form-fitting manner against being twisted relative to the longitudinal axis (9).
Claims13
A hydraulic accumulator, comprising:
- an accumular housing defining a longitudinal axis and having a first end with a first opening concentric with said longitudinal axis;
- a first cover closing said opening in said housing;
- an annular bead deformed and extending radially inwardly on said housing;
- an annular retention groove in said cover receiving said bead to secure said cover positively in said housing against axial forces;
- at least one flattened section on a circumferential annular surface of said cover;
- and
- a wall section of said housing being pressed against said flattened section and deformed transversely relative to said longitudinal axis to lock said cover in said housing against torsion about said longitudinal axis.
A hydraulic accumulator, comprising:
- an accumular housing defining a longitudinal axis and having a first end with a first opening concentric with said longitudinal axis;
- a first cover closing said opening in said housing;
- an annular bead deformed and extending radially inwardly on said housing;
- an annular retention groove in said cover receiving said bead to secure said cover positively in said housing against axial forces;
- a serration on a circumferential annular surface of said cover;
- and
- a wall section of said housing being pressed against said serration and deformed transversely relative to said longitudinal axis to lock said cover in said housing against torsion about said longitudinal axis.
A hydraulic accumulator, comprising:
- an accumular housing defining a longitudinal axis and having a first end with a first opening concentric with said longitudinal axis;
- a first cover closing said opening in said housing;
- an annular bead deformed and extending radially inwardly on said housing;
- an annular retention groove in said cover receiving said bead to secure said cover positively in said housing against axial forces;
- a spiral groove extending along a thread pitch on a circumferential annular surface of said cover;
- and
- a wall section of said housing being pressed radially inwardly into said spiral groove and deformed transversely relative to said longitudinal axis to form protuberance to lock said cover in said housing against torsion about said longitudinal axis.
Dependencies are inferred from the claim text.