Refrigerator

Abstract

The present invention relates to a refrigerator including a rack gear assembly provided on a lower surface of a drawer, wherein the rack gear assembly has a first rack member and a second rack membersequentially moved forward such that an opening distance of the drawer is maximized, and a wing end of the second rack member and a blocking part of a bottom of a storage chamber are provided such that exact engagement of a rack gear with a pinion is maintained during opening of the drawer. In addition, while the drawer is opened, an unwanted movement of the drawer in a closing direction thereof is prevented.

Description

technical field [0001] The present invention relates to a refrigerator having a drawer-type door automatically drawn in the form of a drawer. Background technique [0002] In general, a refrigerator is a home appliance for storing various foods or drinks for a long time using cold air generated by a refrigerant cycle based on a refrigeration cycle. [0003] The above-mentioned refrigerators are classified into refrigerators that can be stored in common regardless of the types of storage items such as food or drinks that need to be stored, and dedicated refrigerators that differ in size or function depending on the types of storage items that need to be stored. [0004] The special-purpose refrigerators include kimchi refrigerators, red wine refrigerators, and the like. [0005] In addition, refrigerators can be classified into refrigerators with revolving doors, refrigerators with drawer doors, and hybrid open-close refrigerators according to the opening and closing methods...

AI Technical Summary

Problems solved by technology

[0013] However, in the aforementioned prior art, guide racks formed with racks are respectively provided on both side wall surfaces of the box, and guide racks are provided on both side wall surfaces (or, on the rear surface) of the storage portion constituting the drawer type door. Both sides) are respectively provided with pinion gears, thereby forming a structure for moving the drawer-type door back and forth, therefore, the pull-out distance of the drawer-type door is limited

[0014] That is, considering that the pull-out distance of the drawer-type door is proportional to the length of the guide rack, if the guide rack is not set to protrude from the inner space in the box to the outside, the storage portion of the drawer-type door cannot be removed from the inside of the box. The inner space of the box body is completely exposed, so it is inevitably inconvenient to take out the storage items stored in the storage part.

[0015] Furthermore, in the drawer-type door of the refrigerator of the aforementioned prior art, due to the weight of the storage items stored in the storage part, the deformation phenomenon that the central side part of the storage part sags downward may be caused, however, due to the storage The part is supported to move on the guide rack located on both sides, therefore, the guide rack and the pinion cannot maintain precise engagement, and the phenomenon of being separated from each other will occur, resulting in the pinion idling or the pinion and pinion. The tooth profile of the guide rack cannot be precisely meshed with each other and a collision failure occurs

[0016] In particular, collisions between the above-mentioned pinion gears and respective tooth profiles of the guide rack cause damage to the pinion gear or the guide rack, and noise is generated, thus, becoming a cause of lowering the user's reliability of the product

[0017] In addition, in the refrigerator of the aforementioned prior art, when the drawer door is fully pulled out, there is a problem that the drawer door moves in the closing direction unintentionally during the process of storing or taking out the stored items in the storage portion.

[0018] In other words, the drawer door cannot be kept in the state and moves due to impact or vibration during the process of storing or taking out storage items into or out of the storage portion of the drawer door. great inconvenience

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