JP2005299314A - Refregerator door opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator door opening/closing device, in which a micro-switch can turn on when the handle is only lightly touched with one's hand, and a geared hinge motor provided at the side of door or hinge top rotates together with the micro-switch turn-on operation to automatically open or close the door. <P>SOLUTION: By lightly pulling a hand hook 10 of a handle 9, it rotates around a fulcrum 11 to actuate a switch pusher 12, which turns on a micro-switch 13 within the handle 9. A geared hinge motor 16 provided at the pivot side of the door 16 rotates together with the micro-switch operation to enable the automatic opening/closing of the door 6 through gear engagement. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door opening and closing device for a refrigerator.

  Conventionally, commercially available refrigerators are provided with a plurality of doors, and at least one of the doors is pivotally pivoted, and is opened and closed around a pivot shaft on one side of the door. It is designed to rotate between positions. One or more storage shelves are fixed or detachably attached to the inner surface of the pivot support door so that bottles, cans and small containers can be stored. In addition, a magnetic gasket is attached to each door, and if 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. The cold air inside the refrigerator does not escape to the outside. As is well known to those skilled in the art, 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 (see, for example, Patent Document 1).

  However, when opening the refrigerator door, it has been experienced that a considerable tensile force is required to overcome the magnetic attraction force that the magnetic gasket creates between the door and the front edge of the refrigerator outer box. By the way. This is especially true when there is a significant load on the storage shelf because it is desired to place a full bottle, can, or small container. In view of the tendency of pivoting doors to be installed at the top of the refrigerator, when the door is under heavy load, such as full bottles, cans and small containers, For short users, this is considerable labor.

FIG. 7 shows a conventional refrigerator door opening and closing device described in Patent Document 1. As shown in FIG. In order to make the force required to open the refrigerator door 6 as small as possible, a handle 22 having a handle 10 and a fulcrum 11 at the center of the refrigerator door 6 and a movable plate 23 movable by the handle 22 are provided. When the refrigerator door 6 is opened, the handle 22 is pulled toward the front so that the handle 22 rotates about the fulcrum 11 to push the movable plate 23, and the movable plate 23 is attached to the outside of the refrigerator body 5. The box 2 is pushed, and the door opening force can be reduced by utilizing the lever principle.
Japanese Patent Laid-Open No. 2002-238086

  However, in the configuration as described above, if priority is given to the ratio of the lever ratio, the design of the handle greatly changes due to the size restriction inside the handle mechanism. Alternatively, there has been a problem that the door opening force becomes heavier even if the lever ratio is used due to an increase in the amount of food stored in the door storage shelves every year.

  The present invention solves the above-mentioned problems. A micro switch is turned on just by lightly touching a handle, and in conjunction with this, a hinge pin motor with a gear provided on the door side or hinge top side rotates to automatically open the door. An object of the present invention is to provide a refrigerator door opening and closing device that can be opened and closed.

  In order to solve the above-mentioned conventional problems, the refrigerator door opening and closing device of the present invention is composed of a door frame member, a door panel, and a heat insulating material, and is attached to the front surface of the refrigerator body so as to be rotatable about a pivot shaft. A pivot support type door that has a handle portion, a fulcrum, and a switch pressing portion on the door, and pulls the handle portion toward the front when the door is opened and closed. A handle body that has a micro switch that rotates around a fulcrum and contacts the contacts by moving the switch pusher, and a gear that is driven by turning on and off the micro switch inside the refrigerator door on the pivot shaft side. The hinge pin motor has a hinge top provided with a hole in which the gear portion of the hinge pin motor with gear is fitted at a position opposite to the hinge pin motor.

  Accordingly, by pulling the handle portion of the handle forward, the handle rotates about the fulcrum, the switch pressing portion moves, the micro switch enters, and a gear provided on the door side in conjunction with it. A hinge pin motor rotates, and the door can be automatically opened and closed by meshing the gears.

  The refrigerator door opening and closing device of the present invention is composed of a door frame member, a door panel, and a heat insulating material, and is a pivoting pivot type attached to the front surface of the refrigerator body so as to be pivotable about a pivot shaft. A door having a handle, a fulcrum, and a switch pressing portion on the door; and when the door is opened and closed, the handle is rotated about the fulcrum by pulling the handle toward the A handle main body having a micro switch that is turned on and off by the movement of the push portion, a hinge pin motor with a gear that is driven by turning on and off of the micro switch on the hinge top portion on the pivot shaft side, and a position opposite thereto. It is set as the structure which has a door provided with the concave shape which the gear part of the said hinge pin motor with a gear fits.

  Accordingly, by pulling the handle portion of the handle forward, the handle rotates about the fulcrum and the switch pressing portion moves, the micro switch enters, and is provided on the hinge top side in conjunction with it. A hinge pin motor with a gear rotates, and the door can be automatically opened and closed by meshing the gear.

  In the refrigerator door opening and closing device of the present invention, the micro switch is turned on just by lightly touching the handle, the geared hinge pin motor provided on the door side or the hinge top side rotates in conjunction with it, and the door automatically opens. It can be opened and closed.

  The invention described in claim 1 is a pivot support type door that includes a door frame member, a door panel, and a heat insulating material, and is attached to the front surface of the refrigerator main body so as to be rotatable about a pivot axis. The handle having a handle, a fulcrum, and a switch pushing portion on the door, and when the door is opened and closed, the handle is rotated about the fulcrum by pulling the handle toward the front, A handle main body having a micro switch for turning on and off by moving, a hinge pin motor with a gear driven by turning on and off of the micro switch inside the refrigerator door on the pivot shaft side, and the gear at the opposite position The hinge top has a hinge top provided with a hole for fitting the gear portion of the hinge pin motor. By gently pulling the handle portion of the handle toward the front, the handle rotates around the fulcrum. Then, the switch pressing part is moved, the micro switch inside the handle is turned on, and the hinge pin motor with a gear provided on the door side is rotated in conjunction with it, so that the door is automatically engaged by the meshing of the gear. Can be opened and closed.

  The invention according to claim 2 is a pivoting type door that includes a door frame member, a door panel, and a heat insulating material, and is attached to the front surface of the refrigerator main body so as to be rotatable about a pivoting shaft. The handle having a handle, a fulcrum, and a switch pushing portion on the door, and when the door is opened and closed, the handle is rotated about the fulcrum by pulling the handle toward the front, A handle main body having a micro switch for turning on and off by moving, a hinge pin motor with a gear driven by turning on and off of the micro switch on the hinge top portion on the pivot shaft side, and the gear at the opposite position It has a door with a concave shape that fits the gear part of the hinge pin motor, and the handle rotates about the fulcrum by gently pulling the handle part of the handle toward you. The switch pusher moves, the micro switch inside the handle enters, and the hinge pin motor with gear provided on the hinge top side rotates in conjunction with it, so that the door automatically engages with the meshing of the gear. Can be opened and closed.

  The invention described in claim 3 is the invention described in claim 1 or 2, wherein the geared hinge pin motor rotates forward and backward, and the door can be automatically opened and closed. .

  The invention according to claim 4 is the motor according to any one of claims 1 to 3, wherein the motor prevents the insulative material from entering the hinge door motor with gears inside the refrigerator door or at the hinge top portion. A storage box or a motor fixing part is provided, and the fixing of the motor and the intrusion of the heat insulating material can be prevented.

  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)
1 is a cross-sectional view of a handle portion of a refrigerator door opening and closing device according to Embodiment 1 of the present invention. FIG. 2 is a partial explanatory view on the pivot shaft side of the refrigerator door opening and closing device according to Embodiment 1 of the present invention. FIG. 3 shows a partial front view of the refrigerator door opening and closing device according to Embodiment 1 of the present invention. FIG. 4 shows a plan view of the refrigerator door opening / closing apparatus according to Embodiment 1 of the present invention when the refrigerator shaft is opened and the refrigerator door is opened.

  In FIG. 1 to FIG. 4, a refrigerator main body 5 constituted by a heat insulating box 4 filled with a heat insulating material 3 between an inner box 1 and an outer box 2 is shown. Reference numeral 6 denotes a refrigerator door, which is axially supported on the front surface of the refrigerator body 5 and attached to be openable and closable, and is composed of an upper and lower door frame member 7, a door panel 8, and a heat insulating material 3.

  A handle 9 has a handle portion 10 extending in the horizontal direction on the open side of the refrigerator door 6. When the refrigerator door 6 is opened, the handle portion 10, the fulcrum 11, and the switch pressing portion 12 are provided. Then, by pulling the handle portion 10 toward the front, the fulcrum 11 is rotated around the shaft, and the switch main body 14 having the micro switch 13 that is turned on and off by the movement of the switch pressing portion 12 causes the pivot shaft 15 side. A hinge-pin motor 16 with a gear that is driven inside the refrigerator door 6 and a hinge top 19 provided with a hole 18 in which the gear portion 17 of the hinge-pin motor 16 with a gear fits in the opposite position.

  About the door opening and closing apparatus of the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, by gently pulling the handle portion 10 of the handle 9 toward the front, the handle 9 rotates about the fulcrum 11 to move the switch pressing portion 12, and the micro switch 13 inside the handle 9 enters. In conjunction with this, the geared hinge pin motor 16 provided on the refrigerator door 6 side rotates, so that the door can be automatically opened and closed by the meshing of the gear 17.

  In addition, the refrigerator door 6 can be automatically opened and closed by rotating the hinge pin motor 16 with a gear forward and backward.

  Further, by providing the motor storage box 20 or the motor fixing portion 21 inside the refrigerator door 6 or at the hinge top 19 portion, it is possible to prevent the hinge pin motor 16 with gear and the heat insulating material 3 from entering.

(Embodiment 2)
FIG. 5: shows sectional drawing of the pivot axis side figure 6B-B part of the refrigerator door opening / closing apparatus in Embodiment 2 of this invention. FIG. 6 shows a plan view on the pivot shaft side of the refrigerator door opening and closing device in Embodiment 2 of the present invention.

  A handle 9 has a handle portion 10 extending in the horizontal direction on the open side of the refrigerator door 6. When the refrigerator door 6 is opened, the handle portion 10, the fulcrum 11, and the switch pressing portion 12 are provided. Then, the pivot shaft 15 is rotated by the handle main body 14 having the micro switch 13 that is rotated about the fulcrum 11 by pulling the handle portion 10 toward the front and the switch pressing portion 12 is moved to turn on and off the contact. A hinge pin motor 16 with a gear that is driven to the hinge top 19 portion on the side and a concave shape 22 in which the gear portion 17 of the hinge pin motor 16 with the gear is fitted are provided at opposite positions.

  About the door opening and closing apparatus of the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, by gently pulling the handle portion of the handle forward, the handle 9 rotates about the fulcrum 11 to move the switch pressing portion 12, and the micro switch 13 inside the handle 9 enters, The gear-attached hinge pin motor 16 provided on the hinge top 12 side rotates in conjunction with the gear 17 so that the door can be automatically opened and closed.

  As described above, in the refrigerator door opening and closing device according to the present invention, when the handle portion of the handle is pulled lightly toward the front, the handle rotates about the fulcrum and the switch pressing portion moves, and the micro switch inside the handle enters. In conjunction with this, the hinge pin motor with gear provided on the pivot axis side of the door rotates, and the door can be opened and closed automatically by meshing the gear, so it can be used as a door opening and closing device for all electrical appliances .

FIG. 3A-A cross-sectional view of the handle portion of the refrigerator door opening and closing device according to Embodiment 1 of the present invention. Partial explanatory drawing by the side of the pivot axis | shaft of the refrigerator door opening / closing apparatus in Embodiment 1 of this invention The partial front view of the refrigerator door opening / closing apparatus in Embodiment 1 of this invention The pivot shaft side of the refrigerator door opening and closing device in Embodiment 1 of the present invention, a plan view when the refrigerator door is opened 6B-B section sectional view on the pivot shaft side of the refrigerator door opening and closing device in Embodiment 2 of the present invention. The top view by the side of the pivot axis | shaft of the refrigerator door opening / closing apparatus in Embodiment 2 of this invention Sectional view of a conventional refrigerator door opening / closing device handle

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Refrigerator main body 6 Refrigerator door 7 Door frame member 8 Door panel 9 Handle 10 Hook part 11 Supporting point 12 Switch part 13 Micro switch 14 Handle main body 15 Pivoting shaft 16 Hinge pin motor with gear 17 Gear part 18 Fitting hole 19 Hinge top 20 Motor storage box 21 Motor fixing part 22 Recessed concave shape

Claims (4)

  The door frame member, the door panel, and a heat insulating material are pivotally pivotable doors that are pivotally attached to the front surface of the refrigerator main body about the pivot shaft, and the door has a handle portion. When the handle has a fulcrum and a switch push part, and when the door is opened and closed, the handle is rotated about the fulcrum by pulling the handle part toward the front, and the switch is turned on and off by the movement of the switch push part. A handle body having a micro switch, a hinge pin motor with a gear that is driven by turning on and off the micro switch inside the refrigerator door on the pivot shaft side, and a hole in which the gear portion of the hinge pin motor with the gear fits in the opposite position The door opening and closing device of the refrigerator which has the hinge top provided with.   The door frame member, the door panel, and a heat insulating material are pivotally pivotable doors that are pivotally attached to the front surface of the refrigerator main body about the pivot shaft, and the door has a handle portion. When the handle has a fulcrum and a switch push part, and when the door is opened and closed, the handle is rotated about the fulcrum by pulling the handle part toward the front, and the switch is turned on and off by the movement of the switch push part. A handle body having a micro switch, a hinge pin motor with a gear that is driven by turning on and off the micro switch at the hinge top portion on the pivot shaft side, and a concave portion in which the gear portion of the hinge pin motor with the gear is fitted to the opposite position. A door opening and closing device of a refrigerator having a door provided with a shape.   The door opening and closing device of the refrigerator according to claim 1 or 2, wherein the door can be automatically opened and closed by forward and reverse rotation of the geared hinge pin motor.   The door of the refrigerator as described in any one of Claim 1 to 3 which provided the motor storage box or the motor fixing | fixed part which prevents the penetration | invasion of the heat insulating material to the hinge pin motor with a gear in the said refrigerator door or the said hinge top part. Switchgear.

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