The principle of the new remote-controlled vacuum cleaner is as follows: a low-speed DC motor drives the spline shaft to rotate at a uniform speed, a friction wheel with an internal spline can move axially on the spline shaft, and the friction wheel is closely adjacent to the friction plate, and the rubber on the friction plate is The sheet increases the coefficient of friction. Axially adjusting the adjusting bolt on the bracket can adjust the pre-pressure between the friction wheel and the friction disc, so that the friction torque reaches a reasonable range.
The automatic adjustment process of the mechanism is as follows: when the wire is tight, the dial lever is rotated around its axis, and the Shanghai pipeline pump pushes the wire rod to drive the pull rod, so that the fork dial friction wheel that is fixed with the pull rod moves backwards over the The centerline of the friction disc rotates the drum by rotating the counterclockwise friction torque of the friction disc. When the cable is slack, the spring pulls the rod forward and drives the friction wheel forward. The friction disc moves forward through the centerline of the friction disc. The friction disc is clockwise. The direction of the friction torque and rotate, tighten the wire; when the tension wire pull wire and spring elastic force equal to the friction wheel and the friction disk contact point in the center of the friction disk, air compressor friction force on the spline shaft no torque, wire Will not be retracted. The feature of this device is that it is fully automated with a mechanical mechanism.
When the obstacle is bypassed, the stretched spring returns to its original state, so that the brush head returns to its original position and the obstacle avoidance capability is improved. At the same time, when the non-standard operation causes the vacuum cleaner head to collide with furniture and other objects quickly, the head bracket compresses the internal spring and activates the stroke switch to cut off the forward circuit to avoid damage to the brush head and furniture.
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