electric vacuum cleaner

Abstract

The present invention provides an electric vacuum cleaner capable of ensuring good retractability and vacuum performance. The upstream pipe part (11) is in a contracted state at its natural length and stretched under the action of an external force, and the downstream of the upstream pipe part (11) comes from the above-mentioned extension pipe that is in an elongated state at its natural length and shrinks under the action of an external force. At least a part of is connected upstream of the extractable downstream pipe portion (12). There is a fixing mechanism (33) capable of maintaining the stretched state when the upstream pipe portion (11) is in the stretched state. When vacuuming, the upstream pipe part (11) is kept in a stretched state by a fixing mechanism (33). When retracting, the upstream pipe part (11) is housed in the extension pipe (6) in a contracted state, thereby shortening the entire length of the pipe part and ensuring a good retracting effect.

Description

technical field [0001] The present invention relates to an electric vacuum cleaner having a pipe portion communicated and connected to a suction side of an electric blower. Background technique [0002] Conventionally, this type of electric vacuum cleaner has a vacuum cleaner main body that retracts and retracts the electric blower. A pipe portion communicating with the suction side of the electric blower is detachably connected to the cleaner main body. The pipe part has an elongated cylindrical pipe body connected to the main body of the vacuum cleaner, and an elongated cylindrical extension pipe connected to the front end of the pipe body, and a floor brush serving as an inlet body is connected to the front end of the extension pipe. [0003] The pipe body is made of flexible synthetic resin or the like in a bellows shape, and can be bent in the axial direction. Therefore, when the electric vacuum cleaner is put away, a part of the extension pipe is locked in the recess...

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned electric vacuum cleaner performs the dust suction operation while maintaining the state of resisting the contraction force and stretching the pipe body. Therefore, during the dust collection operation, for example, the floor brush is attached to the surface to be vacuumed, that is, the ground due to the negative pressure of the electric blower. When the degree of vacuum is increased, etc., the tube body shrinks due to negative pressure, and there is a problem that the dust collection workability is not good.

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