Patent ID: 11952991
Assignee: ANHUI MEIZHI COMPRESSOR CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A piston assembly comprising:
a piston; and
a valve sheet arranged at one end of the piston closer to the valve sheet, wherein the valve sheet comprises:
a valve sheet body defining a mounting port; and
a valve tongue connected to the valve sheet body,

wherein the one end of the piston closer to the valve sheet is provided with a cooperating groove, and a shape of the cooperating groove matches with a shape of the valve tongue,
wherein the valve tongue comprises:
a connecting portion connected to the valve sheet body;
an extension portion arranged in the contour of the mounting port; and
a connection portion configured to connect the connecting portion and the extension portion,

wherein the extension portion is connected to the valve sheet body only through the connection portion and the connecting portion,
wherein the valve tongue extends in an extending direction,
wherein a part of the connecting portion is arranged in the mounting port,
wherein a width of the connection portion along the extending direction is narrower than a width of the connecting portion along the extending direction and a width of the extension portion along the extending direction,
wherein a contour of the mounting port is circular except where the part of the connecting portion that is arranged in the mounting port is provided,
wherein a circumferential contour of the one end of the piston matches the contour of the mounting port, and
wherein a spacer groove is formed between the connecting portion and the valve sheet body, and one end of the spacer groove away from the mounting port forms a processing hole, where the width of the connecting portion adjacent to the processing hole is smaller than a width of the connecting portion adjacent to the spacer groove.