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A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, including a master cylinder operated by a brake operating member, to generate a manually controlled braking pressure according to an operation of the brake operating member, a wheel brake cylinder for applyin

A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, including a master cylinder operated by a brake operating member, to generate a manually controlled braking pressure according to an operation of the brake operating member, a wheel brake cylinder for applying a brake to the wheel, a primary fluid passage for connecting the master cylinder to the wheel brake cylinder, an electrically controlled pressure generating device for generating an electrically controlled braking pressure to produce a required braking effect determined based on at least one of an operating force and an operating stroke of the brake operating member, and a switching device provided in the primary fluid passage, for applying the electrically controlled braking pressure to the wheel brake cylinder while disconnecting the master cylinder from the wheel brake cylinder when the electrically controlled pressure generating device is normally functioning, and for applying the manually controlled braking pressure to the wheel brake cylinder while disconnecting the electrically controlled pressure generating device from the wheel brake cylinder when the electrically controlled pressure generating device is not normally functioning.

대표청구항 ▼

A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, comprising: a brake operating member; a master cylinder operated by said brake operating member, to generate a manually controlled fluid braking pressure according to an operation of said brake operating memb

A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, comprising: a brake operating member; a master cylinder operated by said brake operating member, to generate a manually controlled fluid braking pressure according to an operation of said brake operating member; a wheel brake cylinder for applying a brake to said wheel; a primary fluid passage for connecting said master cylinder to said wheel brake cylinder; electrically controlled pressure generating means for generating an electrically controlled fluid braking pressure to produce a required braking effect which is determined based on at least one of an operating force and an operating stroke of said brake operating member; switching valve means provided in said primary fluid passage, for applying said electrically controlled braking pressure to said wheel brake cylinder while disconnecting said master cylinder from said wheel brake cylinder when said electrically controlled pressure generating means is operative, and for applying said manually controlled braking pressure to said wheel brake cylinder while disconnecting said electrically controlled pressure generating means from said wheel brake cylinder in the event of a failure of said electrically controlled pressure generating means; and at least one fluid absorber connected to a part of said primary fluid passage between said switching means and said master cylinder, for temporarily accommodating the brake fluid of said manually controlled braking pressure delivered from said master cylinder upon operation of said brake operating member, said at least one fluid absorber returning the brake fluid therefrom to said master cylinder upon releasing of said brake operating member.