METHOD FOR POWER TRANSFER BETWEEN MOVABLE AND FIXED CONTACTS AND DEVICE THEREFOR Russian patent published in 2016 - IPC H01R39/18 H01H1/36 

FIELD: machine building.

SUBSTANCE: invention can be used in rocket production and military equipment. Method of power transfer between movable and fixed contacts involves their execution in form of male and female elements with multi-point surface of mutual contact. Method also includes movement of at least one contact relative to each other, as well as execution of one contact in form of spiral spring, side surface of which provides mutual contact contacts. At rotation of upper bushing 6 inner diameter of spring 5 is increasing. Said bushing 6 together with spring 5 rotates relative to contact 1 with electric contact via shaft and spring 2 with lower bushing 6. Turning of contact 1 together with top bushing and spring 5 is obstructed by spring 2, turns of which are tightened causing multiple increase of friction force. During rotation of upper bushing 6 in reverse side tightening up of spring 5 turns occurs, which when turning together with said bushing, involves contact 1, turning coils of spring 2, increases its diameter, spinning therein and at that keeping electric contact with it. At axial movement of shaft its insulated part 7 enters into spring 2. As a result electric contact between the springs 2, 5 and bushing 6 breaks.

EFFECT: simplified design and higher reliability, ensuring transmission of electric power under wide spectrum of vibration loads.

9 cl, 2 dwg