US 12,129,875 B2
Flow path switching valve, and construction machine equipped with same
Soichiro Shin, Chikugo (JP)
Assigned to YANMAR POWER TECHNOLOGY CO., LTD., Osaka (JP)
Appl. No. 17/917,817
Filed by Yanmar Power Technology Co., Ltd., Osaka (JP)
PCT Filed Mar. 8, 2021, PCT No. PCT/JP2021/008969
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/205800, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 2020-070015 (JP), filed on Apr. 8, 2020.
Prior Publication US 2023/0134654 A1, May 4, 2023
Int. Cl. F15B 13/06 (2006.01); F16K 11/085 (2006.01); F16K 27/06 (2006.01)
CPC F15B 13/06 (2013.01) [F16K 11/0853 (2013.01); F16K 27/065 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A flow path switching valve for switching a flow path, the flow path switching valve comprising:
a block-shaped body having:
a first opening portion and a second opening portion which open on faces which are opposite to each other and are configured to communicate with each other via a linear first oil path, and
a third opening portion opening which opens on a face different from the faces which are opposite to each other and is configured to communicate via a linear second oil path to the first oil path;
a valve body that is rotatably installed on the block-shaped body, and that is formed with a communicating flow path which is configured to communicate, depending on a rotation position, two of the three opening portions with each other, wherein the three opening portions including the first opening portion, the second opening portion, and the third opening portion; and
a selecting portion that is configured to, based on regulation of a rotation range of the valve body, select the rotation position of the valve body as:
a rotation position where a first pair of two opening portions of a first combination of combinations of the two opening portions selected from the three opening portions communicate with each other by the communicating flow path, or
a rotation position where a second pair of two opening portions of a second combination that is the combination different from the first combination communicate with each other by the communicating flow path, and
wherein the selecting portion is configured to change the rotation range of the valve body to be regulated.