Thermodynamic overload relay

• Main Authors: KAMOSAKI TAKEO, MIURA SOTO, ONOGI, YUMA
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention provides a thermal overload relay, in the thermal overload relay of a two-element structure for overload protection, the displacement amount of a displacement member is amplified and transmitted to a reversing mechanism. The bimetal (21) is bent when heated. The displacement member (22) is displaced by being pressed by the bimetal (21) when the bimetal (21) is bent. The push rod (23) is rotatably supported by a fulcrum shaft (63), and is pushed and rotated by the displacement member (22) when the displacement member (22) is displaced. When the push rod (23) rotates, the reversing mechanism (24) reverses the contact point by being pressed by a position on the push rod (23), said position being closer to the outside in the radial direction than the position pressed by the displacer (22). 本发明提供一种热动型过载继电器，在进行过载保护的双元件结构的热动型过载继电器中，将位移件的位移量放大地传递至反转机构。双金属件(21)在被加热时弯曲。位移件(22)在双金属件(21)弯曲时被双金属件(21)推压而位移。推杆(23)被支轴(63)以可转动的方式支承，在位移件(22)发生位移时，被位移件(22)推压而转动。反转机构(24)在推杆(23)转动时，被推杆(23)上的与被位移件(22)推压的位置相比靠径向外侧的位置推