Connecting device for front and rear net covers of fan, and connecting column in device

Abstract

The invention discloses a connecting device for front and rear net covers of a fan and a connecting column in the device, wherein the connecting device for the front and rear net covers of the fan comprises a first et cover fixing ring, a second net cover fixing ring and at least two connecting columns; the connecting column comprises a column head fixedly connected with the first net cover fixing ring, a column cap in stop cooperation with the second net cover fixing ring, and a column body arranged between the column head and the column cap; the column body comprises a fixing part fixedly connected with the column head, a spring which is arranged at the fixing part and stretched or retracted along the radial direction of the column body, and a moveable part which is in telescopic cooperation with the fixing part along the radial direction of the column body by the spring; the length of the column body is not smaller than the thickness of the second net cover fixing ring; long holes are formed on the second net cover fixing ring; i an inlet hole for the penetration of the column cap and the column body is formed at one end of the long hole, and t a clamping hole with the diameter larger than the minimum diameter of the column body and smaller than the diameter of the column cap is formed at the other end; and a part between the inlet hole and the clamping hole is communicated with an arc hole with the width wider than the minimum diameter of the column body and smaller than the diameter of the clamping hole.

Description

technical field [0001] The invention relates to a connecting device for front and rear net covers of a fan and a connecting column in the device. Background technique [0002] The grille of the fan has the function of protecting personal safety and fan blades, so the connecting device of the front and rear grilles of the fan is very important, and the connection method also determines the noise level of the fan when it is rotating. [0003] The existing connecting device of the front and rear net covers of the fan mainly includes a plastic ring mechanism and an iron buckle mechanism. The plastic ring mechanism is a plastic ring around the junction of the front and rear grilles of the fan, and then fixed by a plastic buckle. The plastic ring mechanism is simple in structure, but it is inconvenient to install, and the plastic material is easy to age during long-term use; the iron buckle mechanism is in the A movable iron buckle is installed on the edge of one of the fan guard...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a connecting device for the front and rear grilles of the fan to solve the problems of inconvenient installation and loose connection of the fan grills; at the same time, the present invention also provides a coupling column in the connecting device for the front and rear grilles of the fan

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