公开(公告)号：US20170203740A1

公开(公告)日：2017-07-20

申请号：US15326153

申请日：2015-07-14

申请人： ADVICS CO., LTD.

发明人： Tomoyuki YAMAGUCHI

IPC分类号： B60T13/14 ,  B60T13/74 ,  B60T11/236

CPC分类号： B60T13/143 ,  B60T7/042 ,  B60T8/441 ,  B60T11/236 ,  B60T13/145 ,  B60T13/146 ,  B60T13/147 ,  B60T13/662 ,  B60T13/686 ,  B60T13/745

摘要： This hydraulic braking device is provided with: a tubular cylinder; an assisting piston, which is housed in the cylinder so as to be able to move reciprocally, faces a reservoir formed inside the cylinder, and assists a master piston, in a master cylinder, that generates hydraulic pressure for generating a braking force by reciprocally moving from one side to the other as a result of a fluid flowing into the reservoir from a supply source; and a seal member, which is elastically deformable and which seals the reservoir. When the assisting piston is at a location on one side, the reservoir is compartmentalized into a first chamber that communicates with the supply source, and a second chamber that communicates with the first chamber through a restricting flow passage, and the seal member seals the second chamber.