A positioning structure of a refrigerator damper

Abstract

Disclosed is a positioning structure for a refrigerator ventilation door. A door frame is mounted on a base, a door sheet is mounted on the door frame, a driving mechanism used for driving the door sheet to rotate is mounted in the base, and the driving mechanism comprises a driving gear and an output gear. An output shaft is arranged at the center of the output gear, one end of the output shaft is connected with the door sheet, and an axial mounting cavity is formed in the other end of the output shaft. An inner positioning block which rotates synchronously along with the output shaft is arranged in the axial mounting cavity. A first positioning piece which stretches into the axial mounting cavity in the axial direction is arranged on the base, and the first positioning piece is used for positioning by rotating the inner positioning block back and forth, so that the refrigerator ventilation door is positioned at the opened position or the closed position. The positioning structure for the refrigerator ventilation door has the advantages that the rotation of the output gear can be positioned through an inner positioning pin, the torque borne by the inner positioning pin can be reduced due to the fact that the distance between the positioning pin and the center of the output gear is small, and accordingly the fracture phenomenon happening at an inserting hole of the output gear and the door sheet can be avoided.

Description

technical field [0001] The invention relates to a refrigerator damper, in particular to a positioning structure for the refrigerator damper. Background technique [0002] Current refrigerators are usually divided into two spaces, a freezer and a freezer. The freezer and the freezer are separated from each other by a partition. An evaporator and a fan room communicating with the evaporator are arranged in the rear wall of the refrigerator. There is an air outlet duct connected to the fan room between the freezer compartment and the refrigerator compartment of the refrigerator. The air outlet duct is divided into separate channels and communicated with the freezer compartment and the refrigerator compartment respectively. The fan passes the cold air cooled by the evaporator through the air outlet duct. Blow directly into refrigerators and freezers. In order to control the cooling of the refrigerating room and the freezing room, a damper is provided in the air outlet duct befo...

AI Technical Summary

Problems solved by technology

The main defect of the above-mentioned gear transmission structure is that the first positioning pin 11 and the second positioning pin 12 are located outside the output gear 13, that is, the first positioning pin 11 and the second positioning pin 12 are far away from the center of the output gear 13. The farther the pin is from the center of the output gear, the greater the torque that the output gear will exert on it, and as the torque increases, the output gear and the shaft part of the door panel that inserts the output gear are prone to breakage, which will cause the damper to fail to work normally

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