US 12,460,977 B2
Load sensor
Susumu Uragami, Osaka (JP); Hiroyuki Furuya, Osaka (JP); Yuta Moriura, Osaka (JP); Takashi Matsumoto, Osaka (JP); Hironobu Ukitsu, Osaka (JP); and Yodai Matsumura, Osaka (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jun. 5, 2023, as Appl. No. 18/329,391.
Application 18/329,391 is a continuation of application No. PCT/JP2021/040826, filed on Nov. 5, 2021.
Claims priority of application No. 2020-203051 (JP), filed on Dec. 7, 2020.
Prior Publication US 2023/0314242 A1, Oct. 5, 2023
Int. Cl. G01L 1/14 (2006.01)
CPC G01L 1/142 (2013.01) [G01L 1/146 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A load sensor comprising:
a first base member and a second base member disposed so as to face each other;
an electrically-conductive elastic body disposed on an opposing face of the first base member;
an electrically-conductive member disposed between the second base member and the electrically-conductive elastic body;
a dielectric body disposed between the electrically-conductive elastic body and the electrically-conductive member; and
a component configured to change a contact area of the dielectric body in association with increase in a load, such that a form of change in capacitance between the electrically-conductive elastic body and the electrically-conductive member associated with change in the load is substantially linear,
wherein the dielectric body has a plurality of pores whose density is changed in a contact surface direction in which contact of the dielectric body advances in association with increase in the load.