CN2192849Y

CN2192849Y - Automatic close device of refrigerator

Info

Publication number: CN2192849Y
Application number: CN 94212990
Authority: CN
Inventors: 曹新华
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-09
Filing date: 1994-05-26
Publication date: 1995-03-22
Anticipated expiration: 2004-05-26

Abstract

The utility model relates to an automatic closing device for a refrigerator door. The main technical characteristic of the utility model is that the automatic closing device for the door of a refrigerator comprises a door-closing stop switch (7) and an induction switch (8) controlled by the door-closing stop switch (7). The utility model is characterized in that a hinge seat (3) is connected to a refrigerator body (4) and a refrigerator door (6), the refrigerator body (4) and the refrigerator door are connected by magnetic sealing strips (5), a magnetic pole (2) in a magnet-controlled hinge connected with the refrigerator door (6) in an integrated way can rotate around the center of electromagnetic pole (1), and the induction switch (8) is arranged in the refrigerator body (4). The utility model has the advantages of novel design, simple structure, low cost and convenient use; besides, when a person leaves the refrigerator for a certain distance, the refrigerator doorcan realize automatic closing, and the refrigerator door and a manual switch are not affected during power failure.

Description

Automatic close device of refrigerator

The utility model relates to a kind of refrigerator door engine.

In existing technology, the door of refrigerator is can not close automatically, needs people's external force to go to promote.Therefore, in case this refrigerator people leaves, door has been forgotten the pass, can cause some unnecessary loss, and Chinese patent disclosed a kind of " door of refrigerator that magnetic means is arranged ", GG87206427, the door of this magnetic means can be handled magnet from knob outdoors, selectively opens part or all of inner layer door, with the convection current of cold air in the minimizing case and the hot-air outside the case, thereby reach little power consumption, reduce the wearing and tearing of compressor.This device can not be realized door of refrigerator is closed automatically.

The purpose of this utility model provides a kind of simple in structure, the door of refrigerator door engine that very suitable family uses.

The purpose of this utility model is this realization; it comprises the inductive switch of close the door halt switch and control thereof; its major technique is characterised in that: be connected on refrigeratory body and the refrigerator doors by free bearing; be connected with magnetic sealing strip between refrigeratory body and the refrigerator doors; magnetic pole in the magnetic control hinge that combines as a whole with refrigerator doors can rotate around the electromagnetic pole center; inductive switch is arranged in the refrigerator body; the magnetic control hinge can be made as rotary casing type; its inner structure is made up of a pair of electromagnetic pole and a pair of magnetic pole; also can be set to pivoting by this principle; no matter be rotary casing type or pivoting, the electromagnetic pole in the magnetic control hinge and the setting of magnetic pole can make the aperture Q of door of refrigerator less than working in the 180 degree scopes.

The utility model has following advantage compared to existing technology:

1, simple in structure, cheap, easy to use;

2, after the people leaves the refrigerator certain distance, can make refrigerator doors realize closing automatically.

Do not influence the hand switch of door of refrigerator when 3, cutting off the power supply.

Fig. 1 is circuit theory diagrams of the present utility model;

Fig. 2 is the utility model structural representation.

Be described in further detail below in conjunction with embodiment of the present utility model:

See Fig. 1, Fig. 2; when door of refrigerator (6) when opening; the halt switch (7) of closing the door is connected, and inductive switch (8) is started working, because the people is by refrigerator; human body sensing makes inductive switch (8) turn-off; electromagnetic pole in the magnetic control hinge (1) is energising not, does not have magnetic force to produce, and refrigerator doors (6) can be used the hand freely openable; be the position after refrigerator doors (6) is opened shown in the dotted line among Fig. 2, this position also is the original position of closing the door.Electromagnetic pole in the magnetic control hinge (1) and magnetic pole (2) are the like poles angle betas that misplace, be convenient to the energising starting of magnetic control hinge, when the people leaves the refrigerator certain distance, inductive switch (8) conducting, after electromagnetic pole (1) energising, at this moment, electromagnetic pole (1) interacts with magnetic pole (2), and promptly the same sex is repelled each other, there is a natural attraction between the sexes, dotted portion among Fig. 2 is pressed the arrow direction, and the central shaft rotation around electromagnetic pole (1) drives refrigerator doors (6) simultaneously and closes.Close when putting in place in refrigerator doors (6), press the halt switch of closing the door (7), this device is quit work.At this moment, refrigerator doors (6) can also continue to close and puts in place by means of the magnetic attraction that inertia and magnetic sealing strip (5) produce, and plays cushioning effect simultaneously, and can not produce vibration.After refrigerator doors (6) was closed and put in place, the magnetic pole (1) during magnetic control is hinged and permanent-magnet pole (2) were the unlike pole angle [alpha] that misplaces, and it can make (solid line part among Fig. 2) to close the door automatically and reliably put in place.In use, refrigerator doors will accomplish to beat De Gengkai as much as possible, but have to be noted that Q increases, and β reduces.(see figure 2) when β=0, the central lines of electromagnetic pole (1) and permanent-magnet pole (2), the magnetic force generation balance that energising produces, the magnetic control hinge will can not rotate.For this reason: β can not select too for a short time.Just the aperture Q of refrigerator doors has certain limit.It is 30 degree that the α angle of present embodiment design equals the β angle, and A, B are power connection points among Fig. 1, Fig. 2.

Claims

1, a kind of refrigerator door engine; it comprises the inductive switch (8) of halt switch of closing the door (7) and control thereof; it is characterized in that: free bearing (3) is connected on refrigeratory body (4) and the refrigerator doors (6); be connected with magnetic sealing strip (5) between refrigeratory body (4) and the refrigerator doors (6); magnetic pole (2) in the magnetic control hinge that combines as a whole with refrigerator doors (6) can rotate around electromagnetic pole (1) center, and inductive switch (8) is arranged in the refrigerator body (4).

2, refrigerator door engine according to claim 1, it is characterized in that: the magnetic control hinge can be made as rotary casing type, also can be set to pivoting.

3, refrigerator door engine according to claim 1 is characterized in that: the setting of electromagnetic pole in the magnetic control hinge (1) and magnetic pole (2) can make the aperture Q of door of refrigerator (6) less than working in the 180 degree scopes.