Patent ID: 11920578
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A valve comprising:
a first plate having a first vent hole;
a second plate defining a valve chamber between the second plate and the first plate, the valve chamber communicating with the first vent hole, and the second plate having a second vent hole communicating with the valve chamber and not facing the first vent hole; and
a movable plate having a third vent hole facing the second vent hole, the movable plate being disposed in the valve chamber such that the movable plate is movable between the first plate and the second plate,
wherein the second plate has an auxiliary hole not facing the third vent hole of the movable plate, the auxiliary hole being surrounded by a first edge portion being a first corner portion having a substantially convex rounded shape in a front view of a principal surface of the second plate at a side facing the valve chamber, and
wherein the substantially convex rounded shape has a radius of greater than or equal to about 0.005 mm and less than or equal to about 0.25 mm.