JP2008151364A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact door opening device having strong door opening force with a simple structure. <P>SOLUTION: This refrigerator is provided with an electric rotating driving device 25 and a door opening device 23 for converting rotating motion of the rotating driving device 25 into forward and backward linear motion, in a refrigerator body comprising an opening and closing door 9a, and the opening and closing door 9a is opened by the forward stroke in the linear motion of the door opening device 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator in which an opening / closing door is opened by a door opening device.

  In recent refrigerators, for the purpose of energy saving or the like, the door is brought into close contact with the refrigerator main body using a magnet, for example, so as not to cause cold air leakage between the refrigerator main body and the door.

  Therefore, in order to open the door, a door opening force exceeding the suction force is required, so a door opening device is provided so that even a weak person or a child can easily open the door. .

The door opening device includes, for example, a solenoid type that projects a solenoid rod by turning on an electromagnetic solenoid, and opens the door by pushing force when projecting (for example, refer to Patent Document 1), and a plurality of reduction gears that transmit rotational power from a drive unit. A cam type (see, for example, Patent Document 2) is known in which a cam is operated via a cam and a door is opened by the operating force of the cam.
JP 2001-59379 A JP 2002-257466 A

  In the former solenoid type that opens the door with a solenoid, because the door is opened by electromagnetic force, in order to obtain a large opening force, the coil must be enlarged and a powerful magnet is required, which increases the size. Incorporating into the cabinet is subject to the volume of the cabinet. In the latter cam type, a large door opening force can be obtained, but on the other hand, a combination of a cam and a gear increases the number of parts, increases the size, and restricts the installation location. In addition, gear engagement with a light load is not a problem, but when a heavy and heavy load is applied, such as a drawer-type storage container, the service life may be shortened due to wear or the like.

  Accordingly, an object of the present invention is to provide a door opening device having a large door opening force, a simple structure, and a compact structure.

  In order to achieve the above-mentioned object, in the present invention, a door opening for converting a rotary motion of an electrical rotary drive device and the rotary drive device into a linear motion capable of moving forward and backward is provided in a refrigerator body having an open / close door. The door opening device is characterized in that the door is opened by a forward stroke during linear movement.

  According to the door opening device of the present invention, the forward stroke converted from the rotational motion to the linear motion works as a pressing force for opening the door, so that the door can be opened with a large door opening force. For this reason, for example, even a drawer-type opening / closing door having a heavy weight and filled with foodstuffs can be easily and reliably opened. In addition, it is possible to adopt a crank mechanism or the like that converts the rotational motion into a linear motion, the structure is simple, and the size can be reduced.

  According to the present invention, as a preferred embodiment according to the best mode, first, the opening / closing door is a drawer type comprising an opening / closing door and a storage container disposed inside the opening / closing door, thereby providing a hinge type. The range of use can be expanded without difficulty from the door to the drawer-type door.

  Secondly, by providing the door opening device at the center of the partition wall on the bottom side of the storage container, the door is pressed in the opening direction in a balanced manner by one door opening device while ensuring the appearance. It can be so.

  Thirdly, by providing the door opening device at the lower part of the inner wall surface facing the side surface of the storage container, the size of the storage container is not restricted and can be arranged without being obstructed. To.

  Fourth, the door opening device is attached to a rotating body that is rotated by an electric rotation driving device and a position deviated from the rotation center of the rotating body, and the door pressing portion moves forward and backward when the rotating body rotates. And a guide member that linearly moves the door pressing portion forward and backward along an axis passing through the rotation center of the rotating body, so that the door can be opened when opening the door while achieving compactness. An accurate and reliable pressing stroke of the pressing portion is obtained.

  Fifthly, the door opening device is arranged on the inner side of the opening / closing door so as not to protrude from the front opening of the interior of the cabinet, so that the appearance can be improved while ensuring safety.

  Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 5.

  1 to 5, FIG. 4 shows a schematic front view of the refrigerator. The refrigerator 1 includes a refrigerating room 3, an ice making room 5, a switching room 7, a vegetable room 9, and a freezing room 11 in order from the top. The open / close door 3a of the refrigerating room 3 is a hinge type that opens and closes with a hinge as a fulcrum.

  From the ice making room 5 and the switching room 7 to the freezing room 11, the front drawer doors 5 a, 7 a, 9 a, 11 a are drawn out to the front, and in this embodiment, the vegetable room 9 is used as a representative example of the drawer type. A specific example will be described.

  2 and 5, the vegetable compartment 9 includes a drawer door 9 a serving as an opening / closing door and a storage container 13, and the storage container 13 is detachably mounted inside the drawer door 5 a via a container support means 15. ing.

  The container support means 15 is a support member 19 that also serves as an extendable (arrow) guide rail that extends forward and leftward from the front opening 17 in the interior of the container, and the outer peripheral flange of the storage container 13 dropped from above. The structure supports the portion 13a.

  A door opening device 23 is provided at the center of the partition wall 21 that partitions the vegetable compartment 9 and the freezer compartment 11.

  As shown in FIG. 3, the door opening device 23 is attached to an elliptical rotating body 27 to which a rotational motion is given by an electric rotation driving device 25 serving as a driving motor and a position displaced from the rotation center P of the rotating body 27. An arm-like actuating member 31 in which the door pressing portion 29 moves forward and backward when the rotating body 27 rotates, and the door pressing portion 29 in front and rear along an axis X passing through the rotation center P of the rotating body 27 (FIG. 3). And a guide member 33 that linearly moves in the vertical direction. The door pressing portion 29 and the guide member 33 are set in a relationship between the piston and the cylinder, and are fixedly set on the inner side so as not to protrude outward from the front opening 17 in the cabinet, so that the finger is not hit or pinched. While ensuring safety and improving appearance, a reliable pressing state is ensured up to the final position.

  FIG. 1 shows a specific mounting state of the door opening device 23. The electric rotation driving device 25 of the door opening device 23 is fixedly set in an attachment recess 37 provided on the upper surface of the partition wall 21, and rotational power is applied to the rotating body 27 by an operation switch 39 provided on the front surface of the drawer door 9a. To give.

  The mounting recess 37 prevents water from entering the inside by the double structure of the water retaining groove 37 provided on the upper surface of the water retaining rib 37a and the partition wall 21 in the width direction. 35 is entirely covered.

  The rotating body 27 and the operating member 31 are set to have a relationship of a crank mechanism in which the door pressing portion 29 moves forward and backward as the rotating plate 27 rotates 360 degrees. The distance from the rotation center P of the rotating body 27 to the attachment point 31a of the operation member 31 is the operation stroke, and the operation position (FIG. 3 (c)) advanced from the standby position (FIG. 3 (a)) where the attachment point 31a is retracted. Up to this is the forward stroke of the door pressing portion 29.

  The pressing surface 29a of the door pressing portion 29 can be brought into contact with a projection 43 integrally projecting from the drawer door 9a, the pressing surface 29a is formed in an arc surface, and the projection 43 is formed in a plate shape having a round tip. Yes. Therefore, the tip of the protrusion 43 abuts against the pressing surface 29a of the door pressing portion 29 when the drawer door 9a is fully closed, that is, in the standby state (FIG. 3 (a)). The center position is correctly pressed without blurring from side to side due to the forward stroke during forward movement.

  According to the door opening device 23 configured as described above, when the operation switch 39 provided on the front surface of the drawer door 9a of the vegetable compartment 9 is operated, the electric rotation driving device 25 is activated, and the rotating body 27 is rotated. give. Thereby, the protrusion 43 is pressed by the advance stroke of the door pressing portion 29 that advances through the operation member 31, and the open state of the drawer door 9a is obtained. At this time, since the forward stroke of the door pressing portion 29 acts as a pressing force, even if the drawer door 11a is filled with groceries in the storage container 13 and is heavy, it can be easily and reliably opened. In addition, due to the layout of the door opening device 23 arranged at the center, even if the door opening device 23 is provided at one place, an accurate pressing force for pressing the drawer door 9a with good balance can be obtained.

  Moreover, the projection 43 and the door opening device 23 are hidden by the storage container 13 even when the drawer door 9a is opened as shown in FIG. .

  In the present embodiment, the door opening device 23 is provided at the center of the partition wall 21, but as shown in FIGS. 6 and 7, the door opening device 23 is provided at the lower part of the both-side wall surfaces 45 facing the both side surfaces 13 b of the storage container 13. You may make it provide. In the case of this embodiment, when the protrusion 43 extended from the drawer door 9a is pressed by the door pressing portion 29 of the door opening device 23, it is provided on both the left and right sides in consideration of the left and right balance of the pressing force. It is desirable to do. Further, since the lower part on both sides of the storage container 13 is a passage space through which cold air flows, it becomes a means for using the passage space, and therefore there is an advantage that the storage container 13 can be arranged without adversely affecting the volume of the storage container 13.

  Further, the door opening device 23 is a drawer-type embodiment for opening the drawer door 9a. However, the door opening device 23 can be provided as a means for opening a hinge-type opening / closing door.

The cross-sectional outline explanatory drawing of the principal part which showed the door opening apparatus concerning this invention. The general | schematic perspective view which shows the state which attached the door opening apparatus to the center part of the partition wall. Operation | movement explanatory drawing of a door opening apparatus (a) (b) (c). The outline front view of the refrigerator which implemented the present invention. The outline perspective view of the state where the drawer door used as a vegetable room was fully opened. The general | schematic perspective view similar to FIG. 2 which shows another embodiment which has arrange | positioned the door opening apparatus in the side wall surface lower part in the store | warehouse | chamber which opposes the side surface of a storage container. FIG. 7 is a schematic plan view of FIG. 6.

Explanation of symbols

9 Vegetable room 9a Drawer door (open / close door)
DESCRIPTION OF SYMBOLS 13 Storage container 13b Side surface of storage container 17 Front opening | opening opening | mouth 21 inside of a chamber | part 21 Partition wall 23 Door opening device 25 Electrical rotation drive device 27 Rotating body 29 Door pressing part 29a Pressing surface 31 Actuating member 33 Guide member 43 Protrusion body 45 Both sides in store | chamber interior Wall

Claims (6)

  The refrigerator main body equipped with an open / close door is equipped with an electrical rotation drive device and a door opening device that converts the rotational motion of the rotation drive device into a linear motion that can be moved forward and backward, and the door opening device is a forward stroke during linear motion. A refrigerator characterized in that the opening / closing door is opened.   The refrigerator according to claim 1, wherein the opening / closing door is a drawer type including an opening / closing door and a storage container disposed inside the opening / closing door.   The refrigerator according to claim 2, wherein the door opening device is provided in a central portion of a partition wall which is a bottom surface side of the storage container.   The refrigerator according to claim 2, wherein the door opening device is provided at a lower portion of the inner wall surface facing the side surface of the storage container.   The door opening device includes a rotating body that rotates by an electrical rotation driving device, an operating member that is attached to a position deviated from the rotation center of the rotating body, and whose door pressing portion moves forward and backward when the rotating body rotates, and the door 5. The guide member according to claim 1, further comprising a guide member that linearly moves the pressing portion forward and rearward along an axis passing through the rotation center of the rotating body. refrigerator.   The refrigerator according to any one of claims 1, 2, 3, 4, and 5, wherein the door opening device is disposed inside the opening / closing door and on an inner side that does not protrude from a front opening in a warehouse.

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