Electromagnetic actuator and valve device
AssigneeMikuni Corporation
InventorsSatoshi Sekiguchi, Shoichi Ishiguchi
Life of this patent
Estimating the term…
Abstract
An electromagnetic actuator includes: a movable element 50, reciprocating along an axis S; a coil 122 for excitation; a shaft 60, fixed to the movable element; a first inner yoke 70, movably receiving the movable element; a second inner yoke 80, attracting the movable element through energization of the coil and movably receiving the shaft; and an outer yoke 90, 100, surrounding the coil and bonded to the first inner yoke and the second inner yoke. In a cross section including the axis, a first bonding region between the first inner yoke and the outer yoke and/or a second bonding region between the second inner yoke and the outer yoke have a bonding length Hd1+Hs1, Hd2+Hs2 greater than a plate thickness T of the outer yoke.
Claims15
An electromagnetic actuator, comprising:
- a movable element, reciprocating along a predetermined axis;
- a coil for excitation;
- a shaft, fixed to the movable element;
- a first inner yoke, movably receiving the movable element;
- a second inner yoke, attracting the movable element through energization of the coil and movably receiving the shaft;
- and an outer yoke, surrounding the coil and bonded to the first inner yoke and the second inner yoke,
- wherein in a cross section comprising the axis, a first bonding region between the first inner yoke and the outer yoke and/or a second bonding region between the second inner yoke and the outer yoke have a bonding length greater than a plate thickness of the outer yoke.
Dependencies are inferred from the claim text.