FAN FRAME STRUCTURE, SWITCH AND COMMUNICATION DEVICE

Title:

FAN FRAME STRUCTURE, SWITCH AND COMMUNICATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2024/016950

Kind Code:

A1

Abstract:

A fan frame structure, a switch and a communication device. The fan frame structure comprises: a first frame (1), which is provided with a fan mounting space adapted to accommodate a fan; and a backflow prevention sheet frame (3), which is arranged at a position on the first frame (1) corresponding to the fan. The backflow prevention sheet frame (3) comprises a backflow prevention blocking sheet (31) rotatably arranged on the backflow prevention sheet frame (3). The backflow prevention blocking sheet (31) comprises a rotary shaft (311) extending in a substantially vertical direction; and a blocking sheet portion (312) capable of pivoting about the rotary shaft. The backflow prevention blocking sheet (31) is provided with a first limit position when same is opened, wherein when the backflow prevention blocking sheet (31) is at the first limit position, the range of the included angle between the extension plane where the blocking sheet portion (312) is located and the extension plane where the backflow prevention sheet frame (3) is located is less than 90 degrees. The backflow prevention blocking sheet (31) is further provided with a second limit position when same is closed, and when the backflow prevention blocking sheet (31) is in the second limit position, the backflow prevention blocking sheet (31) is closed in a sealing manner.

More Like This:

WO/2012/046022

FAN SUPPLIED BY EXTERNAL DC POWER SOURCE

Inventors:

CHEN GENG (CN)

Application Number:

PCT/CN2023/102501

Publication Date:

January 25, 2024

Filing Date:

June 26, 2023

Export Citation: