CN2549408Y

CN2549408Y - Airing opening of refrigerator

Info

Publication number: CN2549408Y
Application number: CN 02221030
Authority: CN
Inventors: 张炳圣; 葛建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-03
Filing date: 2002-06-03
Publication date: 2003-05-07
Anticipated expiration: 2012-06-03

Abstract

The utility model relates to an airing opening of refrigerator, which comprises a base, a rotating baffle arranged on the base and a baffle frame. The base is also provided with an electric motor for driving a rotating shaft of the rotating baffle through a gear speed shifting mechanism, and the last step of the gear speed shifting mechanism and the rotating shaft of the rotating baffle are transmitted through a pair of special shape gears; the pitch circle diameter of each tooth of a drive wheel increases gradually along one direction, and a driven wheel meshed with the drive wheel is arranged at the rotating shaft of the rotating baffle, and the shape of the driven wheel is similar to the drive wheel, but the installation directions are reverse. The utility model can ensure the air door of refrigerator can be started and closed reliably.

Description

The refrigerator throttle setting

Technical field

The utility model relates to a kind of refrigerator throttle setting that is used for cold wind control in the refrigerator, regulates.

Background technology

The refrigerator throttle setting is mounted on the control access of cold wind stream of refrigerator, regulates the device of cold air supply by its open and close.The general baffle plate rotating shaft of adopting an electro-motor by reduction gear driving air door of existing refrigerator throttle setting, to realize the open and close of air door, the angular speed and the suffered moment of torsion thereof of its baffle plate rotation are uniform.Mainly there is following defective in this structure: 1, when door opening, because baffle plate and framework contact portion are frozen easily at low temperatures, freezed, baffle plate can not reliably be opened; 2, when air door is closed, because the suffered moment of torsion deficiency of baffle plate rotating shaft makes the baffle plate closure not tight.

Summary of the invention

Technical problem to be solved in the utility model is, improves the defective of prior art, and a kind of refrigerator throttle setting of reliably opening and closing is provided.

Refrigerator throttle setting of the present utility model, include a base and the butterfly and the baffle plate framework that are installed on the base, electro-motor also is installed in base, electro-motor drives the rotating shaft of butterfly by a gear shift, between the rotating shaft of described gear shift afterbody and butterfly by a pair of special shape gear transmission, the reference diameter of each tooth of driving wheel increases successively gradually along a direction in the described special shape gear, the follower that is meshed with it is installed in the rotating shaft of butterfly, its shape is identical with driving wheel, and installation direction is opposite.

The utility model has the advantages that, because the gear drive that the baffle plate of air door is gradually changed by a pair of reference diameter, when the suffered moment of torsion of the rotating shaft of gearratio and baffle plate also gradually changes, make baffle plate have maximum moment of torsion, thereby can guarantee air door opening and closing reliably in the moment of open and close.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of each parts in the base.

The specific embodiment

As shown in the figure, this refrigerator throttle setting includes a base 1 and the butterfly 2 and the baffle plate framework 3 that are installed on the base, electro-motor 4 is installed in base, electro-motor drives the rotating shaft 6 of butterfly by a gear shift 5, between the afterbody of gear shift and the rotating shaft of butterfly 6 by a pair of special shape gear 7 transmissions, the reference diameter of each tooth of driving wheel in the special shape gear increases successively gradually along a direction, the follower that is meshed with it is installed in the rotating shaft 6 of butterfly, its shape is identical with driving wheel, and installation direction is opposite.In the process of door opening, the moment gearratio minimum that baffle plate 2 is opened, its rotating speed is the slowest, and suffered moment of torsion maximum can overcome the frozen resistance of baffle plate, and moment of torsion reduces gradually subsequently, and rotating speed increases gradually, and total time cycle is met the demands; And in the process that air door is closed, baffle plate 2 reverse rotations, thereby have maximum moment of torsion in the moment that it is closed, make baffle plate 2 can with framework 3 tight closure.

Claims

1, a kind of refrigerator throttle setting, include a base (1) and be installed in butterfly (2) and baffle plate framework (3) on the base, electro-motor (4) is installed in base, electro-motor drives the rotating shaft (6) of butterfly by a gear shift (5), it is characterized in that: between the afterbody of gear shift and the rotating shaft of butterfly (6) by a pair of special shape gear (7) transmission, the reference diameter of each tooth of driving wheel in the special shape gear increases successively gradually along a direction, the follower that is meshed with it is installed in the rotating shaft (6) of butterfly, its shape is identical with driving wheel, and installation direction is opposite.