1. Block the cleaning head for an electric toothbrush (10), wherein the cleaning head (24) can be extracted from the portion (12) of the toothbrush handle or is inserted therein, wherein the handle portion includes a drive shaft (14) exiting therefrom having a tapered free end (40) and a peripheral circular recess (36) on its outer surface (35) for receiving a portion of the spring member, wherein the cleaning head comprises the cleaning element (26) for cleaning teeth, mounted on the distal end of the exhaust from has narrowed portion (28) when it is m narrowed portion is hollow at its length from its proximal end for receiving the drive shaft of the handle portion, wherein the narrowed portion includes a peripheral circular recess (38) on the inner surface (37) of its hollow portion which is aligned with a recess in the drive shaft when the cleaning head unit is in the operating position on the handle, said recess being placed in the spring element (32) to ensure reliable axial retention of the brush block on the drive shaft, wherein the hollow portion narrowed portion at an upper end of the hollow portion includes matching tapered recess (44) for receiving the tapered end of the drive shaft to form a sufficiently dense for efficient interaction torque transmission between the drive shaft and the cleaning unit golovki.2. Block cleaning head according to Claim. 1, wherein the interaction between the end of the drive shaft and the recess in the tapered portion is sufficiently dense to remove substantially all backlash between the driving shaft and block chi1. Блок чистящей головки для электрической зубной щетки (10), в котором чистящая головка (24) может быть извлечена из участка (12) ручки зубной щетки или вставлена в него, при этом участок ручки включает в себя приводной вал (14), выходящий из нее, имеющий клиновидный свободный конец (40) и периферийное круговое углубление (36) на его наружной поверхности (35) для вмещения участка пружинного элемента, причем чистя
