초록 ▼

A vacuum servo apparatus in which, in a performance diagram having an input coordinate axis perpendicular to an output coordinate axis, the normal operation is represented by a first operating line and, after a plunger member is moved by a solenoid so that movement of the plunger member with respect

A vacuum servo apparatus in which, in a performance diagram having an input coordinate axis perpendicular to an output coordinate axis, the normal operation is represented by a first operating line and, after a plunger member is moved by a solenoid so that movement of the plunger member with respect to a transmission member is controlled, the operation is represented by a second operating line following additional jump biasing force to be supplemented and generated is appropriately set and an output of the apparatus is designed to be faster during the return stroke for straightforwardly reflecting the intention of the driver.

대표청구항 ▼

[ What is claimed is:] [9.]9. An apparatus for use in a vehicle to boost brake pressure during a normal braking operation and an emergency braking condition, comprising:an operating member for receiving an input force;and an output force generator for generating an output force as a braking power;sa

[ What is claimed is:] [9.]9. An apparatus for use in a vehicle to boost brake pressure during a normal braking operation and an emergency braking condition, comprising:an operating member for receiving an input force;and an output force generator for generating an output force as a braking power;said output force generator generating an output force in response to operation of the operating member during the normal braking operation in which, on an operational line diagram having said input force and said output force as two coordinates, a locus of said output force relative to said input force follows a first operational line, said output force generator generating an output force during the emergency braking condition in which the locus of said output force relative to said input force follows a second operational line on said operational line diagram that is different from said first operational line, the second operational line having a first portion defining a basic gradient in which an increase in the input force produces an equal increase in the output force; andsaid second operational line having a second portion in which a slope is greater than said basic gradient, and the output force on the second portion of said second operational line corresponding to a first input force is always greater than the output force on said first operational line corresponding to said first input force. .Iaddend..Iadd.