Piston pump drive assembly for cleaning and care tools
AssigneeShanghai Shift Electrics Co., Ltd.
InventorsXiaoguo DAI, Zhenwu XU
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Abstract
The present disclosure discloses a piston pump drive assembly for a cleaning and care tool. The drive assembly includes a piston cylinder (8) and a piston (21). The piston is provided with a head sealing portion (211) capable of sealingly moving relative to an inner wall face of the piston cylinder, and a liquid inlet (23) and a liquid spray port (22) are provided in a head cavity (V2). The piston pump drive assembly further includes an electromagnetic drive device and at least one elastic element, where the electromagnetic drive device includes a coil and a magnet, the coil is fixed relative to the piston cylinder, and the magnet is located inside the cavity and fixedly attached to the piston.
Claims13
A piston pump drive assembly for a cleaning and care tool, comprising:
- a piston cylinder, a cavity being formed inside said piston cylinder;
- and
- a piston being provided with a head sealing portion, said piston being arranged inside said cavity of said piston cylinder in a reciprocally movable manner in a longitudinal direction, and said head sealing portion moves in a sealing manner relative to an inner wall face of said piston cylinder,
- wherein said cavity comprises a variable-volume head cavity formed adjacent to said head sealing portion, and said head cavity is provided with a liquid inlet and a liquid spray port,
- wherein said piston pump drive assembly further comprises an electromagnetic drive device and at least one elastic element,
- wherein said electromagnetic drive device comprises:
- at least one coil being fixed relative to said piston cylinder;
- and
- at least one magnet or at least one ferromagnetic element being located inside said cavity and fixedly attached to said piston,
- wherein said elastic element is arranged between said piston cylinder and said piston, so as to exert an elastic force on said piston during movement of said piston.
Dependencies are inferred from the claim text.