SENSOR DEVICE

• Main Authors: FUJIKAWA TOMOHIRO, YAMAMOTO MASAHIRO, KAWAGUCHI JUNYA, SATO YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 04.10.2018
• Subjects: CHAMBERS PROVIDED WITH MANIPULATION DEVICES; HAND TOOLS; MANIPULATORS; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PERFORMING OPERATIONS; PHYSICS; PORTABLE POWER-DRIVEN TOOLS; TESTING; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a sensor device of new structure, with which it is possible to realize detection of a worker, etc., by a pressure-sensitive sensor with high accuracy and sufficiently reduce an acting force when the worker, etc., comes in contact with an automatic device.SOLUTION: Provided is a sensor device 10 for detecting contact between a movement unit 18 of an automatic device 12 and a detection object A, the sensor device 10 comprising flexible pressure sensitive sensors 36, 54 for detecting contact between the movement unit 18 and the detection object A. The pressure sensitive sensors 36, 54 are capacitance type sensors having a such structure that each one of telescopically deformable first electrode 42 and second electrode 46 is fastened to either side of an elastically deformable dielectric layer 40, and detecting a pressure acting on facing portions of the first and second electrodes 42, 46 on the basis of a change of capacitance value. An elastic cushion layer 34 is disposed at a position closer to the movement unit 18 than are the pressure sensitive sensors 36, 54, the hardness of the elastic cushion layer 34 being 75% to 500% of the hardness of the dielectric layer 40.SELECTED DRAWING: Figure 2 【課題】感圧センサによる作業者などの検出が精度よく実現されると共に、作業者などが自動装置に接触する際の作用力が十分に低減される、新規な構造のセンサ装置を提供すること。【解決手段】自動装置１２の移動部１８と検出対象Ａとの接触を検出するセンサ装置１０であって、移動部１８と検出対象Ａの接触を検出する柔軟な感圧センサ３６，５４を備えている。感圧センサ３６，５４は、弾性変形可能な誘電体層４０の両面に伸縮変形可能な第一の電極４２と第二の電極４６の各一方が固着された構造を有しており、第一，第二の電極４２，４６の対向部分に作用する圧力を静電容量値の変化に基づいて検出する静電容量型センサとされている。感圧センサ３６，５４よりも移動部１８に近い位置に弾性クッション層３４が配されていると共に、弾性クッション層３４の硬さが誘電体層４０の硬さに対して７５％〜５００％とされている。【選択図】図２