US 11,988,566 B2
Pulling detection device and moving body system comprising same
Naoya Kadota, Tokyo (JP); Kota Yano, Tokyo (JP); Yoshihiro Morimoto, Tokyo (JP); Daisuke Mizuno, Tokyo (JP); and Yasuki Hattori, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/311,069
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Dec. 13, 2018, PCT No. PCT/JP2018/045798
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/121464, PCT Pub. Date Jun. 18, 2020.
Prior Publication US 2022/0042862 A1, Feb. 10, 2022
Int. Cl. G01L 1/04 (2006.01); G01L 5/101 (2020.01); G01L 5/103 (2020.01)
CPC G01L 1/042 (2013.01) [G01L 5/101 (2013.01); G01L 5/103 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pulling detection device comprising:
a base having a plate-shaped foundation portion extending in a longitudinal direction;
a first wall portion, a projection opposed to the first wall portion, and a second wall portion opposed to the projection arranged on the foundation portion in this order in the longitudinal direction;
a movable rod including a switch operation body and a pulling rod, the switch operation body having a first wall portion opposed surface opposed to the first wall portion, a projection opposed surface opposed to a side of the projection opposed to the first wall portion, and a second wall portion opposed surface opposed to the second wall portion, the pulling rod extending from the second wall portion opposed surface so as to penetrate the second wall portion, the movable rod being movable along the foundation portion in the longitudinal direction of the foundation portion, while movement of the movable rod toward one side of the foundation portion in the longitudinal direction is restricted by contact between the first wall portion and the first wall portion opposed surface and movement of the movable rod toward another side of the foundation portion in the longitudinal direction is restricted by contact between the projection and the projection opposed surface;
an elastic body provided between the second wall portion opposed surface and the second wall portion so as to press the second wall portion opposed surface, the elastic body being extendable/contractible in the longitudinal direction of the foundation portion;
a first switch which operates by contact/separation between the first wall portion and the first wall portion opposed surface; and
a second switch which operates by contact/separation between the projection and the projection opposed surface.