Canister vacuum cleaner and method of manufacture

摘要

A canister vacuum cleaner includes a floor cleaning unit having a rotatable brush driven by a brush motor and a remotely disposed canister having a vacuum or suction motor for providing suction to perform cleaning operations. The floor cleaning unit is mechanically and pneumatically interconnected with the canister through a rigid wand and a wand handle and hose assembly. The wand handle and hose assembly includes a wand handle, disposed between the rigid wand and a flexible hose, with a three-position electrical control switch mounted thereon. The control switch enables the deenergization of both the brush motor and the vacuum motor in a first position, enables the energization of the vacuum motor only in a second position and enables the energization of both the vacuum motor and the brush motor in a third position. An electrical control system includes an electrical control circuit for electrically interconnecting the control switch, the brush motor and the vacuum motor with a source of alternating current power by means of three electrical conductors internally disposed within and along the length of the flexible hose and two electrical conductors externally disposed along the length of the wand. The control system further includes a motor relay physically disposed in the canister and electrically interconnected in the control circuit such that the electrical current required to operate the vacuum motor does not pass through the wand handle and hose assembly. The electrical control circuit is configured to facilitate the manufacture of canister vacuum cleaners and to enable the wand handle and hose assembly to be used interchangeably with different models of canister vacuum cleaners.