Wire-retracting device for vacuum cleaner reel

Abstract

The invention discloses a wire-retracting device for a vacuum cleaner reel. The wire-retracting device for the vacuum cleaner reel comprises a reeling wheel, a wire-retracting key, a brake wheel, a spring coiling box, a bracket, a friction block, a sliding rod, a wheel disk and a spring, wherein the bracket is arranged on one side of the reeling wheel; the spring coiling box is arranged on the other side of the reeling wheel; the wire-retracting key and the brake wheel are arranged on the bracket side of the reeling wheel; the wheel disk is arranged on one side of the reeling side; a sliding way is formed on the wheel disk; the sliding rod is connected with the friction block through a rotating rod and moves along the sliding way; a through hole is formed on the end part of one side of the friction block; the rotating rod is sleeved on a rotating shaft; the rotating shaft and the bracket are integrated into a whole or are fixedly connected with each other; the rotating rod and the rotating shaft pass through the through hole of the friction block; the spring is sleeved between the friction block on the rotating rod and the bracket; and the friction block is contacted with one side of the reeling wheel in a wheel friction mode. The wire-retracting device for the vacuum cleaner reel has the advantages of changing wire-retracting speed by controlling the magnitude of a frictional resistance and outputting the constant pulling force so as to retract the wire at a constant speed.

Description

technical field [0001] The invention relates to a vacuum cleaner; in particular, it relates to a constant speed return device of a cord reel for the vacuum cleaner. Background technique [0002] Generally, a vacuum cleaner is a device that uses a vacuum to generate suction to inhale air, make the air flow through various filters, filter foreign objects in the air, and clean the room. [0003] Generally speaking, a vacuum cleaner mainly includes a suction device and a suction pipeline. The suction device mainly formed by a motor and a fan is arranged in the body. The suction pipeline includes a suction head and a suction pipe. The suction head has a downward opening. The suction port communicates with the air inlet of the fan inside the body through the telescopic pipe and the flexible pipe of the suction pipe. When the vacuum cleaner is running, the motor drives the impeller of the fan to rotate at a high speed, exhausting the air in the vacuum cleaner, forming an instantan...

AI Technical Summary

Problems solved by technology

However, the wire return device of the vacuum cleaner reel in the prior art has the following disadvantages. During the wire reel process, the change curve of its coil spring force is as follows: figure 2 As shown, the coil spring force is the largest at the beginning of the loop, and the output force of the spring gradually decreases as the loop continues.

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