Patent ID: 7249808

Claim:
A brake liquid pressure control unit for an on-vehicle device comprising: a base block in a substantially rectangular parallelepiped comprising four base surfaces; at least one reservoir disposed on the base block to temporarily reserve a working liquid in a liquid pressure circuit; a motor to operate a pump to supply the working liquid; an electronic printed circuit board block to control at least an electromagnetic valve, the motor and electronic printed circuit board block being attached onto mutually opposing first and second base surfaces of the four base surfaces of the base block, respectively; a cylindrically shaped hole formed on one of the four base surfaces of the base block except the first and second base surfaces; a lid member being staked to the one of the four base surfaces of the base block on which the cylindrically shaped hole is formed; and a plurality of approximately arc shaped engagement portions, formed on the one of the four base surfaces on which the cylindrical shaped hole is formed, that engageably retain the lid member thereon by partial staking an opening edge of the cylindrically shaped hole along an outer periphery of the lid member, wherein the arc shaped engagement portions are disposed on predetermined positions of the base block except areas surrounding adjacent base surfaces of the base block.