US 11,807,197 B2
Wiper arm
Shinri Akabayashi, Gunma (JP); and Kentaroh Tada, Hiroshima (JP)
Assigned to MITSUBA Corporation, Gunma (JP); and TADA JAPAN CO., LTD., Hiroshima (JP)
Appl. No. 17/429,630
Filed by MITSUBA Corporation, Gunma (JP); and TADA JAPAN CO.,LTD., Hiroshima (JP)
PCT Filed Jul. 27, 2020, PCT No. PCT/JP2020/028644
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2021/020327, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-139721 (JP), filed on Jul. 30, 2019.
Prior Publication US 2022/0105904 A1, Apr. 7, 2022
Int. Cl. B60S 1/52 (2006.01); B05B 1/30 (2006.01); B05B 3/14 (2006.01); B60S 1/34 (2006.01)
CPC B60S 1/522 (2013.01) [B05B 1/3006 (2013.01); B05B 3/14 (2013.01); B60S 1/3415 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A wiper arm which swings a wiper blade that wipes a surface to be wiped, the wiper arm comprising:
an arm head whose base end is mounted on a swing shaft;
an arm shank whose base end is mounted on a tip end of the arm head;
an arm piece whose base end is mounted on a tip end of the arm shank;
a washer tube which is arranged along the arm head, the arm shank and the arm piece; and
a washer nozzle which is mounted on the arm piece and which sprays a washer fluid toward the surface to be wiped,
wherein the washer nozzle comprises:
a check valve;
a valve housing inside which the check valve is housed;
a first flow path which extends in a longitudinal direction of the arm piece and is formed inside the valve housing;
a second flow path which is connected to a downstream side of the first flow path and which extends in a direction intersecting the longitudinal direction of the arm piece;
a flow path opening which opens the first flow path and the second flow path toward one side in the longitudinal direction of the arm piece; and
a closing member which is provided with a joint part connected with the washer tube and is provided with a valve seat at a base side of the joint part in a longitudinal direction of the joint part for contacting the check valve to close which closes the flow path opening.