LAMP-HOLDER Russian patent published in 2007 - IPC H01R33/22 

FIELD: electrical engineering.

SUBSTANCE: the device for fastening the electric lamp cap is made in the form of a clamp with spring 9, lever 2, lock 3 and lock start button 8. The clamp consists of movable (1) and fixed (2) parts. When the electric lamp (4) is placed in lamp holder 5, the cap (11) of electric lamp 4 freely enters the passage for the cap, and through lower contact 6 of electric lamp 4 presses contact 7 of the electric lamp and shifts button 8 of the lock start. Lock 3 releases lever 2, which under the action of spring 9 presses the movable part (1) of the clamp together with the end lamp-holder contact 10 to electric lamp cap 11 thereby clamping the cap. Lamp-holder contact 7 gets pressed to contact 6 of electric lamp 4 by means of start button 8 of lock 3, and contact 10 of the lamp holder - to the cap of electric lamp 4 by spring 9 through lever 9 and the movable part (1) of the clamp. For extraction of the lamp it is necessary to push end 13 of lever 2 in the direction of the glass bulb of electric lamp 4. Lever 2 while compressing spring 9 shifts the movable part (1) of the cap of electric lamp 4 and releases cap 11.

EFFECT: simplified connection and replacement of the electric lamp, reduced traumatic injuries and provided reliable contact.

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