High-tightness metal core body of valve core

Abstract

The invention discloses a high-tightness metal core body of a valve core. The high-tightness metal core body is characterized by comprising a core body (1) used for arranging a core mandrel, the inside of the core body (1) is provided with a platform (2) used for arranging a sealing pad, the center of the platform (2) is provided with a through hole (3) used for allowing the core mandrel to penetrate, the outer wall of the core body (1) is provided with a first annular groove (4) used for arranging a first sealing ring and a second annular groove (5) used for arranging a second sealing ring, and the inner wall of the core body (1) close to the upper surface of the platform (2) is provided with an annular groove (9) used for arranging the sealing pad. The high-tightness metal core body of the valve core is good in sealing effect, less prone to air leak, durable and long in service life. Besides, the high-tightness metal core body has an alarm function and is capable of more accurately displaying real tire pressure of an inflated tire and easy to popularize and apply.

Description

technical field [0001] The invention relates to a metal core body of a valve core with strong airtightness, belonging to the technical field of valves. Background technique [0002] The valve core is also called airtight core, which is a one-way valve, mainly used for inflation and deflation of tires. The most critical part of the valve core is the sealing ring. If the sealing ring is stuck by debris or cracked due to aging, it will leak air. [0003] The sealing pads of the existing valve cores are all directly placed on the platform inside the valve core, which has no limiting effect on the sealing pads, and the sealing pads are prone to air leakage. [0004] In addition, the tire pressure monitoring device of the existing valve core is generally located far away from the pneumatic tire, and the displayed value of the tire pressure deviates slightly from the actual value. Contents of the invention [0005] The technical problem to be solved by the present invention is...

AI Technical Summary

Problems solved by technology

[0003] The gasket of the existing valve core is placed directly on the platform inside the valve core, which has no limiting effect on the gasket, and the gasket is prone to air leakage

[0004] In addition, the tire pressure monitoring device of the existing valve core is generally located far away from the pneumatic tire, and the displayed value of the tire pressure is slightly deviated from the actual value.

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