ROLLING BEARING DEVICE

• Main Authors: TANI NAOKI, HIEDA TAKAHITO
• Format: Patent
• Language: English; Japanese
• Published: 02.12.2021
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MECHANICAL ENGINEERING; PHYSICS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TESTING; THERMAL INSULATION IN GENERAL; WEAPONS

To suppress a decrease in durability of a joint portion between a rolling bearing and a strain sensor while maintaining sensitivity of the strain sensor at high level.SOLUTION: A rolling bearing device comprises: a rolling bearing including an outer ring having an inner peripheral surface on which a first raceway surface is provided, an inner ring having an outer peripheral surface on which a second raceway surface is provided, and a plurality of rolling elements interposed between the first raceway surface and the second raceway surface; a strain sensor detecting strain of the rolling bearing; and a fixation portion for fixing the strain sensor to the peripheral surface of at least one of the outer peripheral surface of the outer ring and the inner peripheral surface of the inner ring. The fixation portion fixes at least two locations in the strain sensor to the peripheral surface such that a detection region of the strain sensor and the peripheral surface are not fixed to each other, the at least two locations facing each other across the detection region.SELECTED DRAWING: Figure 1 【課題】 歪みセンサの感度を高く維持しつつ、転がり軸受と歪みセンサとの接合部分の耐久性の低下を抑制することを目的とする。【解決手段】 転がり軸受装置は、内周面に第１軌道面を有する外輪と、外周面に第２軌道面を有する内輪と、前記第１軌道面及び前記第２軌道面の間に介在する複数の転動体と、を有する転がり軸受と、前記転がり軸受の歪みを検知する歪みセンサと、前記外輪の外周面又は前記内輪の内周面のうち少なくとも一方の周面に、前記歪みセンサを固定する固定部と、を備え、前記固定部は、前記歪みセンサの検知領域と前記周面との間が非固定の状態で、前記歪みセンサのうち前記検知領域を挟んで位置する少なくとも２箇所を、前記周面に固定する。【選択図】 図１