公开(公告)号：US20200298286A1

公开(公告)日：2020-09-24

申请号：US16779786

申请日：2020-02-03

Applicant: NHK SPRING CO., LTD.

Inventor： Shohji KARAKI ,  Mitsuo URANO ,  Tomoya OSUMI ,  Shinpei KAKIUCHI

IPC: B08B3/02 ,  B08B3/04

Abstract: A nozzle cleaning apparatus has one cleaning liquid outlet to which a nozzle is attached, and the other cleaning liquid outlet to which a cleaning attachment is attached. The cleaning attachment includes a nozzle cover, and a cleaning holder attached to the nozzle cover. A cleaning chamber is formed in the nozzle cover. A cleaning liquid inflow chamber, an outer cleaning liquid ejection port, and a cleaning liquid discharge hole are formed in the cleaning holder. A cleaning liquid ejected in a first direction from the nozzle and a cleaning liquid ejected in a second direction from the outer cleaning liquid ejection portion toward the nozzle collide with each other near discharge portions inside the cleaning chamber.