Adjustment damper device

Abstract

The present invention provides a cheap adjusting throttle device which has acting-reliability, high reliability, simple structure, and good assembly. Hence, the driving part (4) comprises: a shell (12) forming outer contour; a electromotor (13)acting as driving source that can rotate in forward direction and positive direction; a driving gear (15) that can transport the rotate of the electromotor(13); a driven gear (16) rotating by use of the driving gear (15). The driving gear (15) joggles with the driven gear (16) only the moment when it opens and closes, and doesn't joggle after it opens and closes. Hence, the driving gear comprises: the gear part (15b) which joggles with the driven gear (16) in the set time, and the maintaining part (15c) which holds the driven gear (16) position when opening and closing.

Description

technical field [0001] The present invention relates to a damper device for opening and closing an opening with a damper, and more particularly to a damper device for controlling temperature by opening and closing a cold air passage in a storage room such as a refrigerator. Background technique [0002] Conventionally, as a unit for controlling the temperature of a plurality of refrigerated compartments in a refrigerator, a damper is used to open and close the air passage of cold air from the cooler to each refrigerated compartment, thereby controlling the temperature of the cold air flowing into each refrigerated compartment. These damper devices are roughly classified into a system in which one damper is operated by one driving source and a system in which two dampers are operated by one driving source. [0003] In the method of operating one damper with one driving source, the rotation control of a motor is used to open and close one opening. As a representative damper de...

AI Technical Summary

Problems solved by technology

[0017] However, first, the above Figure 18 ~ Figure 21 The conventional structure shown has the following problem: the driving gear 111, the driven gear 113, etc. are always in meshing state, therefore, even in the state where the flapper 104 stops opening or closing, it is in a state of applying a load to each gear. In addition, when the rotation angle of the motor 108 deviates due to fluctuations in control or noise, etc., the flapper 104 cannot be completely closed, and a gap is generated between the soft belt 105 and the protruding portion 103 of the opening portion 102, As a result, cold air leaks, or the damper 104 cannot be fully opened, and sufficient cold air cannot flow into the refrigerator compartment, and reliable opening and closing operations cannot be performed.

[0018] In addition, there is the following problem in the above-mentioned conventional structure: the driving part 106 needs the casing 107, the pinion 109, the reduction gear set 110 composed of three gears, the driving gear 111, the driven gear 113, etc., and the number of parts is large, making it difficult to Further miniaturization requires additional time for assembly, etc.

[0020] Second, in the above Figure 18 ~ Figure 21 In the conventional structure shown, an opening forming part 101a and a protruding part 103 are provided at one end of the side wall 101b of the frame 101, and the cross section has an angular U-shape. Therefore, the cooling balance during resin molding is poor, and there is no opening. The forming part 101a is cooled more slowly than the one side of the protruding part 103, and due to the delay in cooling, the frame 101 as a whole has a structure that is easy to bend as shown by a dotted line (refer to Figure 20 )

In this case, there is a problem that poor contact may occur due to floating or falling off of the mating connector, which may hinder the operation of the damper device.

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