CIRCUIT BOARD

• Main Author: SHINOHARA MASATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 05.12.2019
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MECHANICAL ENGINEERING; PRINTED CIRCUITS; WEAPONS

To suppress a reduction of vibration-proof performance due to a reduction of a resonant frequency.SOLUTION: A circuit board comprises a plurality of fastening holes used for fastening to a predetermined component, and is fastened to the predetermined component with a fastening tool inserted into the plurality of fastening holes together with the mounting of a plurality of electronic components to a surface. In a circumference of each fastening hole, a stress relaxation part for relaxing stress is formed at a position for avoiding a straight line connecting between adjacent other fastening holes. Thus, a reduction of vibration-proof performance due to a reduction of a resonant frequency can be suppressed.SELECTED DRAWING: Figure 2 【課題】共振周波数の低下による耐振性能の低下を抑制する。【解決手段】所定の部品への締結に用いられる複数の締結孔、を備え、表面に複数の電子部品が搭載されると共に複数の締結孔に挿入される締結具により所定の部品へ締結される回路基板であって、締結孔の周辺には、隣の他の締結孔との間を結ぶ直線上を避ける位置に応力を緩和するための応力緩和部が形成されている。これにより、共振周波数の低下による耐振性能の低下を抑制することができる。【選択図】図２