Relay movable spring capable of reducing temperature rise and relay

A relay movable spring for reducing temperature rise, comprising:

• movable contacts, a movable spring piece, and a movable spring leading-out piece, the movable spring piece having a first end and a second end opposite to each other, the first end connected with the movable spring leading-out piece, and the movable spring piece comprising at least two current-carrying conductors;
• at least two movable contacts provided and respectively fixed on the at least two current-carrying conductors and close to the second end of the movable spring piece, so that at least two parallel structures are formed on the movable spring piece, and a connecting piece mounted on the movable spring piece and connected with the at least two movable contacts, wherein:
• the movable spring piece comprises a plurality of sub spring pieces stacked together;
• the movable spring comprises a first sub spring piece, a second sub spring piece, a third sub spring piece, and a fourth sub spring piece stacked in sequence;
• each of the first sub spring piece, the second sub spring piece, the third sub spring piece, and the fourth sub spring piece is provided with two straight slits to form three current-carrying conductors;
• three movable contacts are provided and respectively fixed on the corresponding current-carrying conductors, so that three parallel structures are formed on the movable spring piece;
• a U-shaped bending part is arranged on the current-carrying conductors of each of the first sub spring piece, the second sub spring piece, and the third sub spring piece, and the current-carrying conductor of the fourth sub spring piece is not provided with the U-shaped bending part;
• and
• an arc-shaped slit is arranged on the current-carrying conductor of the fourth sub spring piece, and the arc-shaped slit is located at a side of the movable contact away from the movable spring leading-out piece, so that an end of the current-carrying conductor of the fourth sub spring piece away from the movable spring leading-out piece swings elastically.