Patent ID: 8820762

Claim:
A pressure buffer device comprising: a cylinder configured to store liquid; a partitioning member configured to partition a space in the cylinder into a first liquid chamber and a second liquid chamber for storing the liquid; a channel section configured to form a channel of the liquid from the second liquid chamber to the first liquid chamber; a releasing and blocking section configured to release and block a flow of the liquid flowing from the second liquid chamber to the first liquid chamber via the channel section; a first space forming section opposed to one side of the releasing and blocking section and configured to form a space for receiving inflow of the liquid; a second space forming section opposed to the other side of the releasing and blocking section and configured to form a space for receiving inflow of the liquid; a first inflow section connected to the channel section, configured to form an inflow route of the liquid from the channel section to the first space forming section, and having a channel sectional area smaller than a channel sectional area of the channel section; and a second inflow section connected to the channel section, configured to form an inflow route of the liquid from the channel section to the second space forming section, and having a channel sectional area larger than the channel sectional area of the first inflow section and smaller than the channel sectional area of the channel section.