Oral irrigator
AssigneeShanghai Shift Electrics Co., Ltd.
InventorsXiaoguo DAI, Zhenwu XU
Life of this patent
Estimating the term…
Abstract
The present disclosure discloses an oral irrigator, including a plunger pump device for pumping a fluid. The plunger pump device includes: a piston cylinder, a piston cavity being enclosed by a side wall of the piston cylinder; a piston arranged in the piston cavity for a reciprocating movement and having a first end and a second end opposite to the first end; and a sealing member connected to the piston cylinder in a sealing manner; and a first cavity is enclosed by the piston, a first portion of the side wall of the piston cylinder, and the sealing member; a second cavity is enclosed by the piston, and a second portion of the side wall of the piston cylinder; and the first cavity and the second cavity are respectively located at the two opposite ends of the piston.
Claims13
An oral irrigator, comprising a plunger pump device for pumping a fluid, the plunger pump device comprising:
- a piston cylinder, a piston cavity being enclosed by a side wall of the piston cylinder;
- a piston arranged in the piston cavity for a reciprocating movement;
- and
- a sealing member connected to the piston cylinder in a sealing manner;
- wherein a first cavity is enclosed by the piston, a first portion of the side wall of the piston cylinder and the sealing member;
- a second cavity is enclosed by the piston, and a second portion of the side wall of the piston cylinder;
- the first cavity and the second cavity are respectively located at two opposite ends of the piston;
- wherein a first through hole for communicating the first cavity with the outside of the first cavity is provided, and
- as a pressure of the first cavity alternately varies with the reciprocating movement of the piston in the piston cavity, the fluid in the first cavity is capable of flowing out of the first cavity through the first through hole.
An oral irrigator, comprising a plunger pump device for pumping a fluid, the plunger pump device comprising:
- a piston cylinder, a piston cavity being enclosed by a side wall of the piston cylinder;
- a piston arranged in the piston cavity for a reciprocating movement;
- and
- a sealing member connected to the piston cylinder in a sealing manner;
- wherein a first cavity is enclosed by the piston, a first portion of the side wall of the piston cylinder, and the sealing member;
- a second cavity is enclosed by the piston, and a second portion of the side wall of the piston cylinder;
- the first cavity and the second cavity are respectively located at two opposite ends of the piston;
- the piston has a first end close to the first cavity and a second end away from the first cavity,
- wherein the first end and the second end of the piston respectively form a first sealing portion and a second sealing portion which are sealed relative to a surface of an internal cavity of the piston cylinder, and
- pressures of the first cavity and the second cavity alternately vary with the reciprocating movement of the piston in the piston cavity, and the first sealing portion and the second sealing portion alternately bear the pressures.
Dependencies are inferred from the claim text.