air button

Abstract

The invention discloses an air button, which comprises a housing, a button, an upper cover, a joint and an upper cover sleeve. The housing has openings passing through its upper and lower ends. The button is movably arranged at the upper end of the opening, and the joint is arranged at At the lower end of the opening, an air bag is also arranged in the opening, the upper end of the housing is provided with a first annular flange, the lower end of the upper cover is provided with an annular groove, and the inner wall of the annular groove is provided with a block, so The joint includes a fixed end and a connecting end, the connecting end includes a cannula communicating with the air bag, and the cannula is used to be socketed with the hose, and the connecting end also includes a threaded portion, a threaded portion A screw joint block is screwed on the top, and the intubation tube is surrounded by claws for clamping and fixing the hose on the intubation tube. pipe on. The air button of the invention has simple structure, convenient assembly, more reliable connection and better airtightness.

Description

technical field [0001] The invention relates to a non-contact switch, in particular to an air button. Background technique [0002] The air button is one of the components of the non-contact switch. Common air buttons on the market, such as a switch manual control device disclosed in Chinese patent CN203787318U, include a housing, and the housing is provided with a button spring, a button and an air bag. The other end is provided with an upper cover, the upper cover is provided with an upper cover sleeve, and the connection between the upper cover and the shell is provided with a gasket and a rubber pad. In addition to being able to embed and fix the air button on the installation panel of the equipment, the upper cover can also A limit to the button can be formed to prevent the button from falling out of the casing. The housing is provided with a joint that communicates with the airbag. The joint is used to connect the hose to connect the airbag with the external device. W...

AI Technical Summary

Problems solved by technology

[0003] At present, the air button in the prior art is generally glued and fixed between the upper cover and the housing and between the upper cover sleeve and the upper cover, which is troublesome to assemble, and is easy to age and fall off after long-term use. After the upper cover falls off, it will cause button out

In addition, the joint is generally tapered, and the hose can gradually expand and tighten when it is sleeved along the joint, and the hose is kept in the joint based on the clamping force between the hose and the joint. However, this traditional connection method does not Too reliable, when the hose shakes with the air pressure, it is easy to create a gap, causing the air pressure to leak out, and the hose is easy to fall off from the joint

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