Refrigerator

Abstract

A refrigerator is provided to prevent a door driving unit from being abnormally operated when a refrigerator is turned on. A refrigerator comprises drawer doors and a door driving unit(10). The drawer doors move back and forth. The door driving unit closes the drawer doors when the drawer doors are within the close driving range. When a refrigerator is turned on, the door driving unit is not driven for a predetermined time even if the drawer doors are within the close driving range. After the predetermined time lapses, the door driving unit is driven. The door driving unit includes a connection member and a driver(15). The connection member has a movable unit(16a). The driver has a guide(96) into which the movable unit is inserted. The movable unit has magnets(95,99). The guide has two hall ICs(97,98).

Description

technical field [0001] The present invention relates to refrigerators. Background technique [0002] Conventionally, as a device for automatically opening the door of a refrigerator, there have been disclosed a short-distance operation section with a high gear ratio and a long-distance operation section with a low gear ratio, and a large force is generated when the package is pulled away, and then opened at a high speed, A structure in which an overload prevention clutch is provided on a low gear portion (for example, refer to Patent Document 1: Japanese Patent Application Laid-Open No. 02-157581). [0003] Or the following structure is disclosed: the pushing part is linearly moved by the worm wheel and the worm bar, the drawer door is pushed out with the pushing part and opened automatically, and the return spring is used to return to the introduction position after the door is opened (for example, refer to Patent Document 2 : Japanese Patent Application Laid-Open No. 2001...

AI Technical Summary

Problems solved by technology

[0010] However, as the size of the refrigerator increases, the amount of stored food also increases. For example, more than 20 kg of food is stored in the freezer or vegetable compartment, so there is a problem that the force to open the door of the vegetable compartment or freezer becomes heavy.

[0011] Especially when starting to open the door, in addition to the load against the rails of the drawer, the force of pulling away from the magnetic seal attached to the main body of the refrigerator is added, and the force to open the door becomes particularly heavy. For people with small strength, opening the refrigerator becomes a burden

[0012] In addition, as far as the refrigerator is concerned, if the door is not closed tightly when it is in the so-called half-open state, the following problems will occur: cold air leaks to the outside and loses the function of the refrigerator, and the cost of electricity is high, and the energy saving effect is reduced. The quality of the refrigerator is deteriorating, and the outside air outside the refrigerator enters the refrigerator to condense, and water droplets adhere to the refrigerator.

[0022] In Patent Document 3, after opening the drawer box, a structure is disclosed in which the drive mechanism is reversed and the gears are reversed to release the meshing of the teeth of the gears. The structure or movement of the object is not described, and it does not have the function of closing the door

[0023] In Patent Document 4, Patent Document 5, and Patent Document 6, it is disclosed that an arcuate or elliptical rotatable cam is provided, and by using a signal from a door opening switch to rotate the above-mentioned cam by means of a drive device, the The front end of the long diameter part of the cam protrudes forward to open the cam device of the door. However, in the structure of this prior art, the amount of pushing out the door when the cam rotates is only the change of the radius of the cam accompanying the cam rotation. The speed given by the direction of the door is low, and the amount of opening of the door is approximately equal to the amount of protrusion formed by the cam, that is, the driving range of the driving force applied to the door. There is a limit to further increasing the amount of opening of the door.

[0024] Patent Document 7 discloses a control structure for retracting the sliding member to the retreating end when the sliding member is not at the retreating end when the refrigerator is powered on. When the power is turned on when the sliding member is not at the retreating end, It may be considered that the user may be disturbed by the unexpected movement or sound of movement of the sliding part back

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