Patent ID: 7780200

Claim:
A fluid pressure device comprising: a chassis being formed from a resin material including a port through which a pressure fluid is supplied/discharged; an adjustment valve mounted on a surface of the chassis to set a pressure of the pressure fluid; a joint member formed from a metal material having a non-circular shape in cross section, and including an opening through which the pressure fluid flows, and a latching groove disposed on an outer peripheral surface of the joint member and recessed with respect to the outer peripheral surface; and a latching member inserted into an insertion hole that is formed on a bottom surface of the chassis and that faces the port, the latching member being inserted through the latching groove of the joint member from a direction perpendicular to an axial direction of the joint member, and the bottom surface being a surface opposite to the surface on which the adjustment valve is mounted, wherein a cross sectional shape of the port into which the joint member is inserted is also formed in a non-circular shape, corresponding to the cross sectional shape of the joint member.