Linear motion apparatus for refrigerator

Abstract

The present invention relates to a linear motion apparatus for a refrigerator, the part count and size of which are reduced, and in which an advancing / retreating rod can advance / retreat to / from an exact position without a separate micro-switch sensing the advancing / retreating position, and a motor can be prevented from being overloaded. The linear motion apparatus for a refrigerator according to the present invention comprises: a hollow case; an advancing / retreating rod which has a rack gear and which advances / retreats relative to the case; a motor accommodated in the case so as to generate power for powering the advancement / retreat of the advancing / retreating rod; a worm axially coupled to a rotating shaft of the motor; a first intermediate gear which is arranged at one side of the worm in the case, and the upper portion of which has a worm wheel meshing with the worm and a the lower portion of which has a lower spur gear; and a second intermediate gear which is arranged at the other side of the worm in the case, and the lower portion of which has a lower spur gear meshing with the lower spur gear of the first intermediate gear and the upper portion of which has an upper spur gear meshing with the rack gear.

Description

technical field [0001] The present invention relates to a linear motion device for a refrigerator. In particular, it relates to a reduction in the number and size of parts by arranging a small number of gears at appropriate positions by improving its structure, and it is not only possible to detect advance and retreat without a separate micro switch , so that the advance and retreat levers advance and retreat at the correct position, and can also prevent the motor from overloading the linear motion device for refrigerators. Background technique [0002] figure 1 It is a brief structural diagram of an ice taking-out device of a conventional refrigerator. Such as figure 1 As shown, the ice taking out device 10 of the existing refrigerator automatically opens or closes the ice taking out door 12, 12a of the storage box 13 for storing the ice cubes processed by ice making, and the connecting rod 11 is connected to the ice taking out door 12, 12a In the state, by means of the ...

AI Technical Summary

Problems solved by technology

[0006] However, according to the ice handling device of the conventional refrigerator as described above, since a total of three spur gears 4, 5, 6 are adopted, there is a problem that the number of parts increases and the size of the device increases.

Also, since the spur gears 4, 5, 6 are arranged on one side of the worm gear 3 instead of on both sides of the worm gear 3, there is a problem that the size is further increased.

[0007] Not only that, since there is no guide member for guiding the linear advance and retreat movement of the advance and retreat rod 7, there is a problem that the advance and retreat rod 7 moves out of the path, and a micro switch is adopted in order to stop the drive of the motor 2, so not only the part There is a problem of increasing the number of pieces, and there is also a problem of increasing the size

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