Solenoid valve
AssigneeSMC Corporation
InventorsShinichi Yoshimura, Kazuhiro Umeda
Life of this patent
Estimating the term…
Abstract
A solenoid valve is formed by engaging locking protrusions with engagement holes and thereby joining a valve body and a magnetic cover to each other. A top wall of the magnetic cover is formed by a pair of bent portions that extend from a pair of respective sidewalls of the magnetic cover and that are bent toward the space between the sidewalls. The bent portions are fastened to each other in the width direction Wd by a circuit board spacer (first fastening member), and the circuit board spacer and the valve body are fastened to each other in the axial direction Ld by a connector cover.
Claims9
A solenoid valve that extends in an axial direction, a width direction orthogonal to the axial direction, and an up-down direction orthogonal to the axial direction and that has a first end and a second end positioned opposite to each other in the axial direction, the solenoid valve comprising:
- a valve body having multiple ports formed inside and also having a valve plug disposed inside so as to be able to move in the axial direction and switch a communication state among the ports;
- a valve actuation unit that includes a solenoid portion and that is connected to an end portion of the valve body near the second end and configured to move the valve plug by moving a movable iron core in the axial direction due to magnetic excitation of the solenoid portion;
- and
- a closed-end magnetic cover having an opening at an end thereof near the first end, wherein
- the solenoid valve is formed by inserting the solenoid portion into the magnetic cover from the opening and by joining the valve body and the magnetic cover to each other,
- the magnetic cover is formed into a box having the opening by bending a magnetic metal sheet and has
- first and second sidewalls that extend in the axial direction and oppose each other in the width direction,
- a bonnet wall that integrally connects edges of the first and second sidewalls near the second end,
- a top wall formed in such a manner that first and second bent portion extending from respective axially extending upper edges of the first and second sidewalls are bent toward a space between the first and second sidewalls, and
- a bottom wall formed between axially extending lower edges of the first and second sidewalls so as to oppose the top wall in the up-down direction,
- the valve body and the magnetic cover are joined to each other by engagement between locking protrusions and engagement holes that are formed at a pair of side surfaces of the valve body and at the first and second sidewalls of the magnetic cover, and
- the solenoid valve further includes
- a first fastening member that fastens the first and second bent portions to each other in the width direction and
- a second fastening member that fastens the first fastening member and the valve body to each other in the axial direction.
Dependencies are inferred from the claim text.