JP2007178078A - Automatic door opening device for refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic door opening device for a refrigerator capable of simultaneously opening first and second doors of a bipartisan door-type refrigerator only by one automatic door opening device by bifurcating the tip shape of a pushing-out bar of the automatic door opening device into two. <P>SOLUTION: This automatic door opening device 16 provided with the pushing-out bar 14 of which the tip shape movable in the longitudinal direction is branched into two, and a drive switch 15 for longitudinally driving back and forth the pushing-out bar 14, at a refrigerator door 7 side, is disposed on a ceiling portion 13 of an anti-hinge 10 side of a refrigerator main body 6. Thus the first and second doors of the biparting door-type refrigerator can be simultaneously opened only by one automatic door opening device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an automatic door opening device for a refrigerator.

  Conventionally, refrigerators that are commercially available are provided with front-opening first and second doors each having one end supported by a hinge on the front surface of the opening in the heat insulating box, and the inner peripheral edges of both doors. Each has a gasket attached, and when the door closes the opening connected to the refrigerator compartment, an almost airtight seal is defined between the door and the front edge of the refrigerator. Cold air does not escape to the outside. As is well known, the magnetic gasket has a structure in which a permanent magnet that produces a magnetic attractive force necessary to keep the door sealed is embedded. However, when the refrigerator door is opened, a considerable force is required for the magnetic gasket to release the magnetic attractive force between the door and the front edge of the refrigerator outer box. When a considerable load is applied to the doors such as full bottles, canned goods, small containers, etc. inside the doors of both doors, a considerable force is required, and in recent years to reduce the opening operation force of the refrigerator door Some include an automatic door opening device that opens a refrigerator door using an electric drive source (see, for example, Patent Document 1).

FIG. 8 shows a longitudinal sectional view of a main part of a conventional refrigerator door automatic opening device described in Patent Document 1. As shown in FIG. For example, the motor 18 is used as a drive source and is transmitted to the pinion 19 through a gear mechanism, converted into a linear motion by the pinion 19 and the rack 20, and the push rod 21 integrated with the rack 20 is linearly moved back and forth. The configuration. The electric door automatic opening device 22 having such a configuration is installed on the refrigerator body 6 side facing the refrigerator door 7. Then, the motor 18 is rotated based on the operation of the drive switch 15, the push rod 21 is projected based on the rotation, and the refrigerator door 7 is pushed open by the push rod 21.
JP 2001-56176 A

  However, in the configuration as described above, the door of the refrigerator compartment has two doors in the kannon door type having the first and second doors, and the door automatic opening device is provided on the ceiling portion of the refrigerator main body. Two pieces had to be installed, and there was a problem that the installation space and cost were very high. The present invention solves the above-mentioned problem, and by branching the tip shape of the push-out rod of the automatic door opening device into two branches, the first and second doors of the double door type refrigerator can be formed with only one automatic door opening device. An object of the present invention is to provide an automatic door opening device for a refrigerator capable of simultaneously opening the doors.

  In order to solve the above-described conventional problems, an automatic door opening device for a refrigerator according to the present invention includes a heat insulating box body having an opening on the front surface of the refrigerator main body, and one end portion that is connected to the heat insulating box body via a hinge. The first and second doors that are movably supported and provided to open and close the opening, and the inner peripheral edges of the first and second doors so as to be adsorbed to the front surface of the refrigerator body, The mounted gasket is provided to open the pivotable door, and has a push bar that can be moved back and forth on the ceiling portion on the side opposite to the hinge of the refrigerator body. In the automatic door opening device that can be brought into contact with a part of the first and second doors and opened, the tip shape of the push rod of the automatic door opening device is bifurcated. .

  Thus, the first and second doors of the door-to-door refrigerator can be simultaneously opened with only one automatic door opening device.

  The automatic door opening device for a refrigerator according to the present invention has a first and second doors for a double door type refrigerator with only one automatic door opening device by bifurcating the tip of the push bar of the automatic door opening device. Can be opened simultaneously, improving usability.

  The invention according to claim 1 is such that the heat insulating box having an opening on the front surface of the refrigerator main body, and one end of the heat insulating box that is pivotally supported via a hinge to close the opening. Insulation on the anti-hinge side of the first and second doors, having a double door first and second door provided, and a gasket attached to the inner periphery of the first and second doors In the refrigerator provided with a door automatic opening device in the box ceiling, the door automatic opening device includes an extrusion rod, the tip of the extrusion rod branches into two branches, and the first and second doors can be opened simultaneously. Therefore, it is possible to improve usability.

  According to a second aspect of the present invention, in the first aspect of the invention, the push-out bar of the automatic door opening device rotates 90 ° by pressing a changeover switch provided on the front surface of the first or second door. However, only the first or second door can be opened, and the door on only one side can be opened and closed when necessary, and the usability can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of an essential part of an automatic door opening device for a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a plan view of the refrigerator door automatic opening device according to the embodiment. FIG. 3 is a plan view when the door automatic opening device of the refrigerator in the embodiment is opened. FIG. 4 is a front view of an essential part of the automatic door opening device for the refrigerator in the same embodiment.

  In FIG. 1 to FIG. 4, a refrigerator main body 6 is shown that is constituted by a heat insulating box 5 that is filled with a heat insulating material 3 between an inner box 1 and an outer box 2 and has an opening 4 on the front surface. Reference numeral 7 denotes a double door refrigerator door, which has a first door 8 and a second door 9, and is composed of a door frame member, a door panel, a door inner plate 11 fitted with a gasket 12, and a heat insulating material 3. Yes.

  Each of the first door 8 and the second door 9 is rotatably supported at one end via a hinge 10 so that the door is attached to the front edge of the refrigerator body 6 at the inner peripheral edge of the door. By providing the gasket 12 attached to the inner plate 11, the sealed state with the refrigerator door 7 is maintained.

  An extrusion rod 14 having a bifurcated tip shape movable forward and backward, and a drive switch 15 for driving the extrusion rod 14 forward and backward are provided on the refrigerator door 7 side on the ceiling portion 13 on the side opposite to the hinge 10 of the refrigerator body 6. The door automatic opening device 16 is provided.

  The operation of the refrigerator door automatic opening device configured as described above will be described below.

  By pushing a drive switch 15 provided on the front surface of the refrigerator door 7, the push bar 14 of the door automatic opening device 16 is driven forward. At this time, since the tip shape of the push rod 14 is bifurcated, only one door automatic opening device 16 can be used to move to the first door 8 and part of the second door 9 of the double door refrigerator door 7. Each can abut and open simultaneously.

(Embodiment 2)
FIG. 5 is a longitudinal sectional view of an essential part of an automatic door opening device for a refrigerator according to Embodiment 2 of the present invention. FIG. 6 is a plan view when the door automatic opening device of the refrigerator in the embodiment is opened. FIG. 7 is a front view of the main part when the push-out bar of the automatic door opening device for the refrigerator in the embodiment is rotated by 90 °.

  5 to 7, a push bar 14 having a bifurcated tip shape movable in the front-rear direction and a drive switch 15 for driving the push bar 14 in the front-rear direction are provided on the ceiling 13 of the refrigerator body 6 on the side opposite to the hinge 10. The changeover switch 17 that rotates the push rod 14 by 90 ° is configured to have an automatic door opening device 16 provided on the refrigerator door 7 side.

  The operation of the refrigerator door automatic opening device configured as described above will be described below.

  By pushing a drive switch 15 provided on the front surface of the refrigerator door 7, the push rod 14 of the door opening device 16 is driven forward. Since the tip end shape of the push rod 14 is bifurcated, only one door automatic opening device 16 makes contact with each of the first door 8 and the second door 9 of the double door refrigerator door 7. Can be opened at the same time.

  At this time, the extruding rod 14 branched into the forked portion rotates 90 ° by pushing a changeover switch 17 provided on the front surface of the refrigerator door 7, and only the first door 8 or the second door 9 is opened. It can be made to.

  As described above, the automatic door opening device for the refrigerator according to the present invention can branch the tip shape of the push-out bar of the automatic door opening device into two branches and simultaneously open the first and second doors. Therefore, it can be used as an automatic door opening device for electrical appliances in general.

The principal part longitudinal cross-sectional view of the refrigerator door automatic opening apparatus in Embodiment 1 of this invention Top view of the refrigerator door automatic opening device of the embodiment The top view at the time of the door opening of the door automatic opening apparatus of the refrigerator of the embodiment Front view of main part of automatic door opening device for refrigerator of the embodiment The principal part longitudinal cross-sectional view of the refrigerator door automatic opening apparatus in Embodiment 2 of this invention The top view at the time of the door opening of the door automatic opening apparatus of the refrigerator of the embodiment Main part front view at the time of 90 degree rotation of the push rod of the automatic door opening device of the refrigerator Longitudinal cross-sectional view of a conventional refrigerator door automatic opening device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner box 2 Outer box 3 Heat insulation material 4 Opening part 5 Heat insulation box 6 Refrigerator main body 7 Refrigerator door 8 1st door 9 2nd door 10 Hinge 11 Door inner board 12 Gasket 13 Ceiling part 14 Extrusion stick 15 Drive switch 16 Automatic door opening device 17 selector switch

Claims (2)

  A heat insulating box having an opening on the front surface of the refrigerator main body, and one end of a double door type that is supported by the heat insulating box through a hinge so as to be rotatable and closes the opening. A door automatic opening device having a second door and a gasket attached to inner peripheral edges of the first and second doors, and a heat insulating box ceiling on the anti-hinge side of the first and second doors The door automatic opening device includes an extrusion rod, the tip of the extrusion rod branches into two portions, and the first and second doors can be opened at the same time. Automatic opening device.   The push rod of the automatic door opening device is rotated 90 ° by pressing a changeover switch provided on the front surface of the first or second door, and only the first or second door can be opened. The refrigerator door automatic opening device according to claim 1.

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