US 12,029,271 B2
Shield lock mechanism and helmet
Eiji Isobe, Tokyo (JP)
Assigned to SHOEI CO., LTD., Tokyo (JP)
Appl. No. 17/781,590
Filed by SHOEI CO., LTD., Tokyo (JP)
PCT Filed Oct. 8, 2020, PCT No. PCT/JP2020/038180
§ 371(c)(1), (2) Date Jun. 1, 2022,
PCT Pub. No. WO2021/152921, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2020-012269 (JP), filed on Jan. 29, 2020.
Prior Publication US 2022/0408868 A1, Dec. 29, 2022
Int. Cl. A42B 3/22 (2006.01)
CPC A42B 3/222 (2013.01) 7 Claims
OG exemplary drawing
 
1. A shield lock mechanism for attachment to a shell, the shield lock mechanism comprising:
a holding member configured to be moved by an external operation between a holding position at which a shield is held and an attachment-detachment position at which the shield can be attached and detached;
a biasing member configured to constantly bias the holding member toward the holding position; and
a restriction member configured to be moved by an external operation between a restricting position at which movement of the holding member arranged at the holding position to the attachment-detachment position is restricted and a canceling position at which the restriction is canceled,
wherein the holding member includes an operating portion configured to receive an external operation, the biasing member is configured to constantly contact the operating portion and input biasing force to the operating portion, and the restriction member is configured to directly contact the operating portion at the restricting position to restrict movement of the operating portion and configured to be separated from the operating portion at the canceling position to permit movement of the operating portion.