JP2013064527A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a configuration in which a rail device supports both right and left ends of a bottom part of a container cannot regulate a lateral deformation of the container, and therefore that there is the possibility of deformation of a side surface of the container along the direction falling toward an inner box side in the case where a lot of objects are stored in the container.SOLUTION: Both ends of a bottom part of a lower container 206 are held by a rail device 202 which can move back and forth, of the lower container 206 along with a drawer door 201 and are provided with, an outside rib 210a and an inside rib 210b to an upper end part on the side surface of the lower container 206 and an outside projection part 208a and an inside projection part 208b to the side surface of an upper container 208. The outside projection part 208a is arranged between the outside rib 210a and the inside rib 210b, and the inside projection part 208b is arranged on the inside surface side of the inside rib 210b. Since the upper container 208 slides on the lower container 206, the lower container 206 is prevented from being deformed, which promotes larger size and larger volume.

Description

  The present invention relates to a refrigerator, and particularly to a drawer structure that forms a drawer-type storage chamber.

  Conventionally, refrigerators are often provided with a drawer-type storage room at the lower stage of the refrigerator from the viewpoint of being able to store without waste and being easy to use. Such a drawer-type storage room is required to have smoothness when the storage room is taken in and out, easy to put food in and out of the storage room, and easy attachment and detachment of the container forming the storage room. .

  Therefore, a technique for improving the usability of the drawer-type storage room is also disclosed (see, for example, Patent Document 1).

  FIG. 16 is a view showing a side cross section of a conventional refrigerator 100.

  A conventional refrigerator 100 shown in FIG. 16 includes a refrigerator compartment 102, a temperature changeable switching room 106, an ice making room (not shown) attached to the switching room 106, a vegetable room 103, and a heat insulation box 101. A freezer compartment 104 is provided as a storage compartment.

  The heat insulating box 101 is formed of an outer box 112, an inner box 110, and a heat insulating material 111 filled between the outer box 112 and the inner box 110.

  A container 306 which is a component of the vegetable compartment 103 is supported by two rail devices 202 connected to the drawer door 201 of the vegetable compartment 103. A container 306 that is a component of the freezer compartment 104 is supported by two rail devices 202 connected to the drawer door 201 of the freezer compartment 104.

  The two rail devices 202 support the upper side or the vicinity of the center of both side surfaces of the container 306 and restrict deformation of the container 306 in the left-right direction.

  Alternatively, as shown in FIG. 17, in another conventional refrigerator, the rail device 202 supports the left and right ends of the bottom of the container 306 to increase the actual storage capacity of the drawer-type storage chamber ( For example, see Patent Document 2).

JP 2006-177653 A JP 2009-228948 A

  However, in the configuration in which the rail device 202 supports the left and right ends of the bottom of the container 306, the rail device 202 cannot regulate the deformation of the container 306 in the left-right direction, and thus the following problems have occurred.

When a large amount of stored items are stored in the container 306, the side surface of the container 306 may be deformed in a direction to fall toward the inner box 110 side. When this deformation is severe, there is a problem that the side surface of the container 306 comes into contact with the inner box 110 and the drawer door cannot be smoothly opened and closed.

  The present invention solves the above-described conventional problems, and is intended to provide a refrigerator having a drawer-type storage chamber that prevents deformation of a container having a large actual storage volume in the drawer-type storage chamber. To do.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes an inner box, an outer box, a heat insulating box made of a heat insulating material filled between the inner box and the outer box, and the heat insulating box body. A storage chamber that is formed inward and has a front opening, a lower container that is provided inside the storage chamber and has an upper surface open, an upper container that slides on the upper portion of the lower container, and a front opening of the storage chamber that can be opened and closed And a rail device that allows the lower container to move back and forth together with the drawer door. The lower container is held at both ends of the bottom by the rail device, and the upper end of the side surface of the lower container An outer rib and an inner rib are provided on the side surface of the upper container, an outer protrusion and an inner protrusion are provided on the side surface of the upper container, the outer protrusion is disposed between the outer rib and the inner rib, and the inner protrusion is It is arranged on the inner surface side of the rib, and the upper container is the lower volume It is intended to slide on.

  According to this, since the two ribs of the outer rib and the inner rib are formed in the depth direction at the upper end of the side surface of the lower container, the deformation of the lower container in the left-right direction can be reduced. In addition, since the outer and inner protrusions of the upper container constituting the sliding portion of the upper container and the lower container have a rail-like fitting structure with the outer rib and inner rib of the lower container, the left and right direction of the lower container Therefore, the deformation of the lower container in the left-right direction can be reduced by the rigidity of the upper container. Since the upper container itself has a structure in which the rigidity is increased by the two protrusions of the outer protrusion and the inner protrusion, it indirectly helps to prevent the deformation of the lower container.

  Therefore, in the configuration in which the rail device is attached to the left and right ends of the bottom of the container, the deformation of the lower container can be reduced / prevented, so that the capacity can be increased and the storage capacity can be increased, and the convenience of using the upper and lower containers separately Can be improved.

  The refrigerator of the present invention can prevent deformation of the container in the drawer-type storage room, secure a large actual storage space, and improve convenience.

Front view of the refrigerator in Embodiment 1 of the present invention Sectional drawing of the refrigerator in Embodiment 1 of this invention The perspective view which shows the rail apparatus of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows the inner box and attachment part of a rail apparatus in the freezer compartment of the refrigerator in Embodiment 1 of this invention Sectional drawing which shows the attachment part of the inner box and rail apparatus in the vegetable compartment of the refrigerator in Embodiment 1 of this invention The perspective view which shows the drawer door and rail apparatus of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows the rail apparatus and container of a refrigerator in Embodiment 1 of this invention (A) The principal part enlarged view which showed arrangement | positioning of the rail apparatus and container of the refrigerator in Embodiment 1 of this invention (B) The principal part enlarged view which showed arrangement | positioning of the rail apparatus and container of the refrigerator (C) The refrigerator Enlarged view showing the arrangement of the rail device and container The perspective view of the container of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the sliding part of the upper container and lower container of the refrigerator in Embodiment 1 of this invention The perspective view of the upper container of the refrigerator of another form of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the sliding part of the upper container and lower container of another form of the refrigerator in Embodiment 1 of this invention The principal part enlarged view of the side flange part of the lower container of the refrigerator in Embodiment 2 of this invention The principal part enlarged view of the outer side protrusion vicinity of the side surface front side of the upper container of the refrigerator in Embodiment 2 of this invention The principal part enlarged view of the side flange part and back flange part of the lower container of the refrigerator in Embodiment 2 of this invention Cross-sectional view of a conventional refrigerator Cross-sectional view of a conventional refrigerator

  1st invention is the heat insulation box which consists of an inner box, an outer box, the heat insulating material filled between the said inner box and the said outer box, and the storage which is formed in the inside of the said heat insulation box and the front surface opens A chamber, a lower container provided inside the storage chamber and having an upper surface opened, an upper container that slides on an upper portion of the lower container, a drawer door that opens and closes the front opening of the storage chamber, and the drawer door And a rail device that allows the lower container to move back and forth, the lower container is held at both ends of the bottom by the rail device, and provided with an outer rib and an inner rib at the upper end of the side surface of the lower container, An outer protrusion and an inner protrusion are provided on a side surface of the upper container, the outer protrusion is disposed between the outer rib and the inner rib, the inner protrusion is disposed on the inner surface side of the inner rib, and the upper The container slides on the lower container.

  According to this, since the two ribs of the outer rib and the inner rib are formed in the depth direction at the upper end of the side surface of the lower container, the deformation of the lower container in the left-right direction can be reduced. In addition, since the outer and inner protrusions of the upper container constituting the sliding portion of the upper container and the lower container have a rail-like fitting structure with the outer rib and inner rib of the lower container, the left and right direction of the lower container Therefore, the deformation of the lower container in the left-right direction can be reduced by the rigidity of the upper container. Since the upper container itself has a structure in which the rigidity is increased by the two protrusions of the outer protrusion and the inner protrusion, it indirectly helps to prevent the deformation of the lower container.

  Therefore, in the configuration in which the rail device is attached to the left and right ends of the bottom of the container, the deformation of the lower container can be reduced / prevented, so that the capacity can be increased and the storage capacity can be increased, and the convenience of using the upper and lower containers separately Can be improved.

  In the second invention, in particular, by providing the inner protrusion of the first invention in the entire depth direction of the upper container, the inner protrusion arranged closer to the side surface of the upper container extends in the entire depth direction of the upper container. It is provided and the rigidity strength of the upper container in the depth direction can be increased. In addition, the degree of freedom in design can be improved by arranging a cold air passage or the like in the container.

  According to a third aspect of the present invention, in particular, in the second aspect of the invention, the cold air supplied to the upper container passes through the cold air communication port by providing the cold air communication ports at regular intervals in the vicinity of the inner protrusion on the side surface of the upper container. Can be supplied to the lower container. In addition, since the rigidity strength of the upper container is reinforced by the second invention, the rigidity strength of the upper container can be complemented even if cold air communication ports are provided at regular intervals in the vicinity of the inner protrusion on the side surface of the upper container.

  In particular, according to a fourth aspect of the present invention, in the first aspect, the outer protrusion is provided in front of the upper container, and the first rear protrusion or groove is provided at the rear of the upper end portion (side flange portion) of the lower container. The outer protrusion and the first rear protrusion or groove are in contact with each other in a state where the upper container is moved to the rearmost position.

  According to this, in addition to the effect of the first invention, the outer protrusion on the side surface of the upper container is used as a stopper function to prevent the container from falling backward as the upper container moves back and forth. There is no need to provide a protrusion, the upper container can be prevented from falling backward, and the protrusion does not damage the contents stored in the lower container.

  In a fifth aspect of the present invention, in particular, in the first aspect, the inner protrusion is provided in front of the upper container, and the rear upper end (side flange) of the lower container is provided at the rear or upper rear end (back flange). A second rear projection is provided, and the inner projection and the second rear projection are brought into contact with the upper container moved in the rearmost direction.

  According to this, in addition to the effect of the first invention, the inner protrusion on the side surface of the upper container can be used as a stopper function to prevent the container from falling backward due to the front / rear movement of the upper container, and the rigidity strength of the container can be increased. It can improve and have a stopper function.

  In a sixth aspect of the present invention, in the first aspect of the invention, in particular, the outer protrusion is provided in front of the upper container, and a front protrusion or groove is provided in front of a side upper end (side flange) of the lower container. The outer container is brought into contact with the outer protrusion and the front protrusion or the groove in a state where the upper container is moved forward.

  According to this, in addition to the effect of the first invention, the outer protrusion on the side surface of the upper container can be used as a stopper function to prevent the container from dropping forward due to the forward and backward movement of the upper container, and the rigidity strength of the container can be increased. It can improve and have a stopper function.

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

(Embodiment 1)
FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention.

  As shown in FIG. 1, a refrigerator 100 according to the present embodiment is a refrigerator 100 having a double-spread door at the top, and in a heat insulating box 101 that separates the inside and the outside of the refrigerator 100 in a heat insulating state. A storage compartment divided into a plurality of compartments is provided.

  The storage compartment divided into a plurality of refrigerators 100 includes a refrigeration compartment 102, an ice making compartment 105, a changeover compartment 106, a vegetable compartment 103, a freezer compartment 104, and the like that can change the temperature inside the refrigerator. Sometimes referred to as distinct.

  At the front opening of the refrigerator compartment 102 located at the top of the refrigerator 100, a rotary heat insulating door 107 filled with foam heat insulating material such as urethane is provided to form a shelf-shaped storage space.

  In addition, the ice making room 105, the switching room 106, the vegetable room 103, and the freezing room 104 disposed below the refrigerator room 102 are drawer-type storage spaces.

  The heat insulating box 101 is a rectangular parallelepiped box that is formed by filling a heat insulating material 111 such as hard foamed urethane between a metal outer box 112 and a resin inner box 110. . The heat insulating box 101 has a function of blocking heat that tends to flow into the heat insulating box 101 from the outside atmosphere (atmosphere).

The refrigerated room 102 is a storage room that is maintained at a low temperature so that the contents are not frozen for refrigerated storage. The lower limit of the specific temperature is usually set at 1 to 5 ° C.

  The vegetable room 103 is a storage room that is arranged at the lowermost part of the heat insulating box 101 and is mainly intended for refrigeration of vegetables. In addition, the vegetable room 103 is set to a temperature that is the same as or slightly higher than that of the refrigerator compartment 102. The lower limit of the specific temperature is 2 ° C to 7 ° C. In addition, it is possible to maintain the freshness of leafy vegetables for a long time, so that it becomes low temperature.

  The freezer compartment 104 is a storage compartment set in a freezing temperature zone. Specifically, although it is normally set at −22 to −18 ° C. for frozen storage, it may be set at a low temperature of −30 or −25 ° C., for example, in order to improve the frozen storage state.

  The ice making chamber 105 is a storage chamber in which an ice making machine (not shown) is provided inward to make ice with the ice making machine and store the ice. The set temperature is almost the same as that of the freezer compartment 104.

  The switching chamber 106 can be switched from a refrigeration temperature zone to a freezing temperature zone according to the use by an operation panel attached to the refrigerator 100.

  FIG. 2 is a longitudinal sectional view of the refrigerator in the first embodiment of the present invention, and shows a state cut along the line AA in FIG.

  As shown in FIG. 2, a partition wall 108 is installed between the storage chambers in order to partition the storage chambers in different temperature zones. Of the storage rooms provided in the refrigerator 100, the drawer-type storage room includes a drawer door 201 that closes the front opening, a drawer door 201 and a heat-insulating box body 101 that are telescopically connected and provided inside the storage room. A rail device 202 that allows the lower container 206 to move back and forth is provided. The lower container 206 is supported by rail devices 202 at both bottom ends.

  The drawer door 201 is a plate-like member having a heat insulating property that can close the opening of the storage chamber so as to be freely opened and closed, and includes a packing 207 on the inner periphery. The packing 207 is in close contact with the heat insulating box 101 and the like in a state where the drawer door 201 closes the opening of the storage chamber, and prevents cold air from leaking. Moreover, the front upper part of the drawer door 201 is provided with a handle portion 201a that is used when the drawer is pulled out.

  A door frame 205 is attached to the drawer door 201 in a vertically projecting manner with respect to the drawer door 201. The door frame 205 is attached to the rail device 202. Further, the door frame 205 holds the lower container 206.

  FIG. 3 is a perspective view showing the rail device of the refrigerator in the first embodiment of the present invention.

  As shown in FIG. 3, the rail device 202 has three rails stacked in three stages, and the second rail (middle rail 221) is movable with respect to the first rail (cabinet rail 222). And since the 3rd rail (top rail 203) can move with respect to a 2nd rail (middle rail 221), it can expand-contract as a whole.

  The cabinet rail 222 is a “fixed rail” fixed to the side surface or the bottom surface of the inner box 110, and the top rail 203 and the middle rail 221 are “movable rails” provided so as to be movable with respect to the fixed rail.

  FIG. 4 is a cross-sectional view showing the inner box of the refrigerator and the mounting portion of the rail device in Embodiment 1 of the present invention. In FIG. 4, the freezing room 104 is demonstrated to an example among the drawer-type storage rooms.

  First, the rail device 202 will be described.

  The cross-sectional shape perpendicular to the longitudinal direction of the cabinet rail 222 is not symmetrical, and the side surface having the higher height is fixed to the inner surface of the inner box 110.

  The middle rail 221 has a I-shaped cross section and a shape having flanges protruding left and right in the vertical direction. The lower flange of the upper and lower flanges is held by the cabinet rail 222 so as to be movable in the longitudinal direction.

  The top rail 203 has a U-shaped cross section, and holds the flange on the middle rail 221 so as to be movable in the longitudinal direction.

  Each of the cabinet rail 222 and the top rail 203 holds a plurality of rotation support members 145 by a rotation support member holding portion 146, and the middle rail 221 is movably held by the rotation support member 145. As the rotation support member 145, a bearing can be used.

  More specifically, the cabinet rail 222 holds the center of the upper and lower flanges of the middle rail 221 from the three directions via the plurality of rotation support members 145.

  Further, the top rail 203 holds the center rail 221 centered on the upper flange from three directions via a plurality of rotation support members 145.

  By combining the cabinet rail 222, the middle rail 221 and the top rail 203 in this way, the middle rail 221 can move in the longitudinal direction on the cabinet rail 222. Further, the top rail 203 is movable on the middle rail 221 in the longitudinal direction. That is, the top rail 203 can move in the longitudinal direction on the cabinet rail 222 via the middle rail 221.

  Further, the middle rail 221 and the top rail 203 can move smoothly as the plurality of rotation support members 145 rotate.

  The top rail 203, the middle rail 221, the cabinet rail 222, and the rotation support member 145 are attached to the inner box 110 in a state of being assembled in advance.

  Next, attachment of the rail device 202 to the inner box 110 will be described.

  As shown in FIG. 4, a rail mounting portion 223 formed integrally with the cabinet rail 222 is disposed so as to come into contact with the side of the inner box 110 and fixed to the side of the inner box 110 with screws 400. .

  At this time, since the inner box 110 serving as a mounting surface is mainly molded from resin, even if screws are directly fixed to the inner box 110, it is impossible to secure a strength that can withstand the load applied to the rail device 202. Therefore, as means for securely fixing the rail device 202, the rail attachment portion 223 is attached to the rail holding member 270 embedded in the heat insulating material 111 via the inner box 110.

The rail holding member 270 is mainly formed of a metal material such as iron. Further, by fixing the rail holding member 270 in a predetermined position on the inner surface of the inner box 110 in advance, and then filling the space between the inner box 110 and the outer box 112 with the foam heat insulating material and burying it in the heat insulating material 111, The holding force of the rail holding member 270 can be further improved.

  The rail holding member 270 is integrally formed with a rail holding portion 270a fixed by the rail mounting portion 223 and the screw 400, and an inward fall prevention means 270b for preventing the rail device 202 from falling inward. The inward fall prevention means 270b is a lateral flange portion formed at the lower portion of the rail holding portion 270a.

  More specifically, the inward fall prevention means 270b separates the inner box 110 from the lower part of the rail holding part 270a, which is a vertical flange portion formed so as to be in close contact with the inner box 110 from the heat insulating material 111 side, and the outer box 112. The tip portion is formed by bending downward. And since the horizontal flange part of the inclining prevention means 270b receives the heat insulating material 111 by the surface and the horizontal flange part bites into the heat insulating material, the strength of the rail holding member 270 can be ensured. As a result, the rail mounting portion 223 can be prevented from falling to the inside of the freezer compartment, the rail device 202 can be prevented from falling in the direction of the inside of the refrigerator, and the drawer door 201 can be opened and closed smoothly. .

  In addition, the inward fall prevention means 270b of the horizontal flange portion may be integrally formed by bending from the upper part of the rail holding part 270a, and the inward fall prevention means 270b may be formed at both the upper part and the lower part. As a result, the upper and lower horizontal flange portions receive heat insulating material 111 on the surface with respect to the rail holding portion 270a, and the upper and lower horizontal flange portions bite into the heat insulating material, thereby further ensuring the strength of the rail holding member 270. it can.

  In addition, the partition wall 108 serving as the bottom wall of the freezer compartment 104 has bottom surface stepped portions 108a formed on both sides, and the bottom surface stepped portion 108a is one step higher than the central portion serving as the reference surface of the partition wall 108 toward the depth direction. Is formed.

  And the rail apparatus 202 is arrange | positioned on the bottom face level | step-difference part 108a. Further, a side stepped portion 110a is formed on the side wall surface portion of the inner box 110 to which the rail device 202 is fixed. The side stepped portion 110a is formed to be recessed toward the outer box 112 side than the upper side wall surface portion in the freezer compartment 104, and the wall thickness is reduced.

  Therefore, since the rail device 202 is placed on the bottom stepped portion 108a and fixed to the side stepped portion 110a with screws, the rail device 202 jumping out into the storage space can be suppressed, and the lower container 206 is placed in the freezer compartment 104. The overall width can be increased and the ineffective space can be reduced.

  Further, since the rail device 202 is assembled by being placed on the bottom surface step portion 108a, workability can be improved. Moreover, since the wall thickness of the partition wall 108 becomes large in the bottom stepped portion 108a, the metal rail device 202 in the freezer compartment 104 is cooled, and the partition wall 108 that becomes the top surface of the vegetable compartment 103 in the lower part. Can be prevented from condensing.

  FIG. 5 is a cross-sectional view showing an inner box and a mounting portion of the rail device in the vegetable compartment of the refrigerator in the first embodiment of the present invention.

As shown in FIG. 5, the rail holding member 280 of the vegetable compartment 103 formed at the lowermost part is disposed in the heat insulating material 111 and includes a rail holding portion 280a and an inward fall prevention means 280b. The rail holding portion 280a is formed of a substantially L-shaped vertical flange portion and a horizontal flange portion, and is in close contact with the side surface portion and the bottom surface portion of the inner box 110. The inward fall prevention means 280b is integrally formed with a horizontal flange portion that is a bottom surface portion of the rail holding portion 280a, and is formed as a lower flange portion that is directed downward in a direction away from the inner box 110.

  Since the inward fall prevention means 280b is a lower flange portion that faces downward and is embedded in the heat insulating material 111, even if a moment acts on the rail mounting portion 223 in the direction of falling into the vegetable compartment, the inner portion of the lower flange portion Since the fall prevention means 280b is blocked by the heat insulating material 111 filled in the lower part thereof, the fall prevention unit 280b can be prevented from falling down, and the strength of the rail holding member 280 can be further secured, and the inside of the rail device 202 of the vegetable compartment 103 toward the inside Can be prevented.

  In addition, the bottom wall 401 of the vegetable compartment 103 is formed with bottom surface step portions 401a on both sides, and the bottom surface step portion 401a is formed one step higher than the central portion serving as the reference surface of the bottom wall 401 and is formed in the depth direction. Yes.

  And the rail apparatus 202 is arrange | positioned on the bottom face level difference part 401a. Further, a side stepped portion 110a is formed on the side wall surface portion of the inner box 110 to which the rail device 202 is fixed. The side stepped portion 110 a is formed so as to be recessed toward the outer box 112 than the upper side wall surface portion in the vegetable compartment 103, and the wall thickness is thin.

  The rail mounting portion 223 is fixed to the side surface by a metal rail holding member 280 and a screw 400 with the side surface stepped portion 110a interposed therebetween.

  Accordingly, since the rail device 202 is placed on the bottom surface step portion 401 a and fixed to the side surface step portion 110 a with screws, the rail device 202 jumping out into the storage space can be suppressed, and the lower container 206 is placed in the vegetable compartment 103. The overall width can be increased and the ineffective space can be reduced.

  Further, since the rail device 202 is assembled by being placed on the bottom surface step 401a, workability can be improved. Furthermore, since the wall thickness of the bottom wall 401 is increased at the bottom step 401a, heat insulation can be ensured.

  Moreover, the drawer door 201 of the lowermost vegetable compartment 103 is below the drawer door 201 of the upper freezer compartment 104, and when the user pulls out the drawer door 201, the position of the lowermost vegetable compartment 103 of the vegetable compartment 103 is positioned. The drawer door 201 is in a position where it is easy to put weight on it, and there is a possibility that an external load amount may be applied in addition to the load of the storage amount, and the rail holding member 280 is tilted inward to become a substantially L-shaped rail holding portion 280a and a lower flange portion Since the prevention means 280b is integrally formed, it is possible to keep the rail device 202 of the lowermost drawer door 201 from falling down more firmly.

  Since the side wall thickness of the freezer compartment 104 and the vegetable compartment 103 is reduced by the side stepped portion 110a, a vacuum heat insulating material (not shown) is made to correspond to the portion where the rail device 202 is disposed. A heat insulating property can be ensured by attaching a vacuum heat insulating material having a height dimension larger than that between the rail device 202 of the freezer compartment 104 and the vegetable compartment 103 to the outer box 112.

  The attachment of the drawer door 201 and the rail device 202 will be described.

  FIG. 6 is a perspective view showing a state in which the drawer door and the rail device are connected in Embodiment 1 of the present invention.

As shown in FIG. 6, the drawer door 201 includes an inner plate 211 that covers almost the entire rear side surface, and a door frame 205. The inner side plate 211 is one of the members constituting the drawer door 201 and is a plate-like member formed by vacuum forming. The door frame 205 fixed directly to the inner plate 211 is connected to the top rail 203 using a screw or the like, whereby the drawer door 2
01 can be pulled out or pushed back by the function of the rail device 202.

  In order to alleviate the stress that occurs when the drawer door 201, particularly the drawer door 201 is pulled out or pushed back by holding the top end, is concentrated on the base end of the top rail 203, the base end of the door frame 205 is An enlarged portion 281 that protrudes upward from the main portion of the door frame 205 is provided.

  The door frame 205 includes a bent portion 241 that is bent so that an edge corresponding to one side of the door frame 205 is along the inner plate 211 of the drawer door 201, and the bent portion 241 corresponds to the top rail 203. It is attached to the part of the drawer door 201 above the base end. By providing the enlarged portion 281 between the bent portion 241 and the door frame 205, the size of the fixing portion between the door frame 205 and the drawer door 201 is increased in the height direction. It is possible to compensate for insufficient strength of the attachment portion between the rail device 202 attached to the lower portion and the drawer door 201, and to smoothly open and close the drawer door.

  The inner plate 211 is provided with a container fixing means 301. The container fixing means 301 is a metal member, and is fixed to a flat metal plate (not shown) fixed in a foam heat insulating material on the back side of the inner plate 211 with a screw or the like via the inner plate 211. . A space is provided between the container fixing means 301 and the inner plate 211, and the container can be fixed by inserting a part of the lower container 206 into the space.

  With these configurations, even if the drawer door 201 is pulled out or pushed back, the stress is not concentrated on the mounting portion of the top rail 203 and is connected via the bent portion 241 and the door frame 205. Accordingly, the mounting strength of the drawer door 201 and the top rail 203 can be improved as a whole.

  This is particularly effective in the case of the present embodiment in which the top rail 203 is attached to the lower part of the drawer door 201. Assuming that the rail device 202 is secured in the vicinity of the central portion in the vertical direction of the drawer door 201, the rail device 202 is secured in the same manner as the position of the present embodiment using the door frame 205 that secures the minimum strength required. When the drawer door 201 is opened and closed in the front-rear direction in a state where the door frame 205 is disposed below the center part in the vertical direction of the drawer door 201, the door frame 205 is insufficient due to insufficient strength of the door frame 205 on the side fixed to the drawer door 201. Or, the inner plate 211 may be deformed, and as a result, the packing 207 provided in the drawer door 201 may be separated from the heat insulating box 101 and a gap may be generated, leading to poor quality such as frost in the refrigerator. There is also.

  If the attachment part of the drawer door 201 and the top rail 203 is at the lower part of the drawer door 201, when the upper part of the drawer door 201 is pulled out and pushed back, the moment applied to the attachment part becomes relatively large. In this embodiment, the door frame 205 provided with the enlarged portion 281 protruding upward from the attachment portion is attached, and the container fixing means 301 is provided above the attachment portion. For this reason, the position serving as the fulcrum of the pulling force can be set upward, and the moment applied to the attachment portion is reduced, so that the attachment portion of the top rail 203 can be protected from damage.

  The arrangement of the lower container 206 on the door frame 205 will be described.

  FIG. 7 is a cross-sectional view showing the state in which the containers are arranged between the rail devices of the refrigerator according to Embodiment 1 of the present invention from the back side.

  As shown in FIG. 7, the lower container 206 is a container for storing beverages, frozen foods, and the like filled with vegetables and plastic bottles, and is a resin box having an upper surface opened. The lower container 206 includes a narrow portion 261 having a narrow width so that step portions 262 facing inward are formed at both ends of the lower container 206. The lower container 206 is supported by the door frame 205 and the top rail 203 by placing the narrow portion 261 between the two top rails 203 and placing the step 262 on the upper surface of the door frame 205. The

  As described above, since the top rail 203 is provided at both corners of the lower portion of the drawer door 201, it is possible to keep the narrow width portion 261 of the lower container 206, which must be narrowed, as short as possible. Therefore, the lower container 206 can adopt a shape that makes the storage volume as wide as possible.

  FIG. 7 is an essential part enlarged view showing the arrangement of the rail device and the container of the refrigerator in the first embodiment of the present invention.

  In the present embodiment, as shown in FIG. 8A, the lower container 206 includes a narrow-width portion 261 having a narrow width so that step portions 262 facing inward are formed at both ends of the lower portion. However, as shown in FIGS. 8B and 8C, the side surface of the lower container 206 is substantially straight, and the lower container 206 is not provided with the step 262. It is supported on the left and right ends of the bottom of the lower container 206 (see FIG. 8B), or is supported below the left and right ends of the bottom of the lower container 206 (see FIG. 8C). May be. In FIG. 8, the positional relationship between the rail device 202 and the lower container 206 is shown, and the door frame 205 is omitted and not shown.

  With the above configuration, the maximum pull-out distance of the drawer door 201 is a length that allows the lower container 206 to be completely opened. That is, when the freezer compartment 104 is fully opened, the rear end of the lower container 206 is positioned in front of the front surface of the drawer door 201 directly above the freezer compartment 104. For this reason, it is easy to store food in the back of the lower container 206 and take out food from the back. Moreover, since the lower container 206 does not interfere with the upper drawer door 201, the lower container 206 can be easily attached and detached.

  FIG. 9 is a perspective view of the refrigerator container according to Embodiment 1 of the present invention.

  As shown in FIG. 9, the lower container 206 includes a flange portion that protrudes outward around the opening. That is, a front flange portion 206a is provided at the upper end portion of the front surface, a side flange portion 206b is provided at the upper end portions of both side surfaces, and a rear flange portion 206c is provided at the upper end portion of the rear surface. The flange portion is formed so that the side walls of the front surface, the side surface, and the back surface are folded back, and the inside of the flange portion is desirably hollow in terms of weight reduction. By providing this flange portion, the strength of the opening of the lower container 206 can be increased.

  The step 262 provided at the lower part of both side surfaces of the lower container 206 is provided with a protrusion 206d formed integrally with the lower container 206 and protruding downward and forward and / or rearward. These protrusions 206d are inserted into notch-shaped fixing holes (not shown) formed in the door frame 205.

  In this manner, the front flange portion 206a of the lower container 206 is fixed to the container fixing means 301 of the drawer door 201, and the protrusion 206d is fixed to the door frame 205, thereby being attached to the lower portion with respect to the drawer door 201. It is possible to compensate for insufficient strength of the mounting portion between the rail device 202 and the drawer door 201 and to smoothly open and close the drawer door.

  That is, since the moment applied to the mounting portion is reduced by setting the position serving as a fulcrum of the pulling force behind the drawer door 201, the mounting portion of the top rail 203 or the mounting portion of the rail fixing portion is protected from damage. Is possible.

  Moreover, the wall surface height of the back surface of the lower container 206 is configured to be lower than the wall surface height of the front surface or both side surfaces. In other words, the back flange portion 206c is provided at a position lower than the front flange portion 206a and / or the side flange portion 206b.

  The upper container 208 is provided with a protrusion on the side surface and a rail flange 209, and slides back and forth on the side flange portion 206b of the lower container 206 and a rail groove (not shown) provided in the inner box. Can move into the box.

  FIG. 10 is a cross-sectional view of the main part of the sliding part of the upper and lower containers of the refrigerator in the first embodiment of the present invention.

  As shown in FIG. 10, the upper container 208 includes an outer protrusion 208 a and an inner protrusion 208 b on the side surface, and an outer rib 210 a and an inner rib 210 b on the side flange portion 206 b that is the upper end of the side surface of the lower container 206. The outer protrusion 208a is disposed between the outer rib 210a and the inner rib 210b, the inner protrusion 208b is disposed on the inner surface side of the inner rib 210b, and the upper container 208 slides on the lower container 206. Further, the inner protrusion 208b is made larger than the outer protrusion 208a, and the engagement margin of the outer protrusion 208a is set to about 7 mm, and the engagement margin of the inner protrusion 208b is set to about 15 mm, so that the inner engagement margin is set larger. Further, the outer rib 210a is set larger than the inner rib 210b for the rib of the lower container 206.

  The operation and action of the upper container 208 and the lower container 206 configured as described above will be described below.

  First, since the two ribs of the outer rib 210a and the inner rib 210b are formed in the depth direction on the side flange portion 206b that is the upper end portion of the side surface of the lower container 206, deformation of the lower container 206 in the left-right direction can be reduced.

  In addition, the outer protrusion 208a and the inner protrusion 208b of the upper container 208 constituting the sliding portion of the upper container 208 and the lower container 206 have a rail-like fitting structure with the outer rib 210a and the inner rib 210b of the lower container 206. Therefore, the deformation pressure in the left-right direction of the lower container 206 is also distributed to the upper container 208, and the deformation of the lower container 206 in the left-right direction can also be reduced by the rigidity of the upper container 208. In addition, it is important to set the distance between each protrusion and each rib, which is a fitting structure, so that both the sliding function and the rigidity of the lower container can be improved. In a state where there is no gap, there is a gap for sliding between each projection and each rib, so that the gap disappears from a state where the deformation exceeds the allowable range, so that the lower container functions to prevent deformation.

  Since the upper container 208 itself has a structure in which rigidity is increased by the two protrusions of the outer protrusion 208a and the inner protrusion 208b, it indirectly helps to prevent the deformation of the lower container 206.

  Moreover, the rigidity strength of the upper container 208 can be further increased by making the inner protrusion 208b close to the side wall of the upper container 208 larger than the outer protrusion 208a.

  Further, with respect to the lower container 206, it is possible to reduce / prevent the outer protrusion 208a from dropping from the grooves of the outer rib 210a and the inner rib 210b by setting the outer rib 210a to be larger than the inner rib 210b.

  As described above, in the present embodiment, in the configuration in which the rail device is attached to the left and right ends of the bottom of the lower container, deformation of the upper part of the lower container, which is a problem, can be reduced / prevented, so that the volume of the lower container can be further increased. The storage capacity can be increased and the convenience can be improved by using the upper and lower containers properly.

  FIG. 11 is a perspective view of an upper container of another type of refrigerator according to Embodiment 1 of the present invention.

  As shown in FIG. 11, by providing the inner protrusion 208b of the present embodiment in the entire depth direction of the upper container 208, the inner protrusion 208b disposed closer to the side surface of the upper container 208 becomes the entire depth direction of the upper container 208. The rigidity strength of the upper container 208 in the depth direction can be increased.

  FIG. 12 is a cross-sectional view of the main part of the sliding part of the upper container and the lower container of the refrigerator according to the first embodiment of the present invention.

  As shown in FIGS. 11 and 12, by providing the cold air communication ports 212 at regular intervals in the vicinity of the inner protrusions 208b on the side surface of the upper container 208 of this embodiment, the cold air supplied to the upper container 208 is It can be supplied to the lower container 206 through the cold air communication port 212, and the stored item in the lower container 206 can be cooled. The rigidity of the side surface of the upper container 208 is lowered by the cold air communication port 212 provided in the vicinity of the inner protrusion 208b, but the rigidity of the upper container 208 is increased by providing the inner protrusion 208b in the entire depth direction of the upper container 208. Since the reinforcement is reinforced, the rigidity strength of the upper container 208 can be supplemented even if the cold air communication ports 212 are provided at regular intervals in the vicinity of the inner protrusion 208b on the side surface of the upper container 208.

(Embodiment 2)
FIG. 13 is an enlarged view of the main part of the side flange portion of the lower container of the refrigerator according to Embodiment 2 of the present invention, and FIG. 14 is an enlarged view of the main part near the outer protrusion on the front side of the upper container.
In the present embodiment, only differences from the first embodiment will be described, and description of similar configurations, operations, and actions will be omitted.

  As shown in FIG. 13 and FIG. 14, an outer protrusion 208 a is provided in front of the upper container 208, and a first rear protrusion 213 (configured by a groove part) is rearward of the side upper end (side flange) of the lower container 206. The outer protrusion 208a and the first rear protrusion 213 come into contact with each other in the state where the upper container 208 is moved to the rearmost position, and serves as a positioning stopper that prevents the upper container from over-running and dropping off. Function.

  As described above, in the present embodiment, the outer container 208a on the side surface of the upper container 208 serves as a stopper function for preventing the deformation of the lower container 206 and preventing the container from dropping backward due to the forward and backward movement of the upper container 208. Thus, there is no need to provide a projection on the bottom of the upper container as in the prior art, and it is possible to prevent the upper container 208 from falling backward and the projection does not damage the contents stored in the lower container.

  FIG. 15 is an enlarged view of main parts of a side flange portion and a back flange portion of a lower container of another refrigerator according to Embodiment 2 of the present invention.

  As shown in FIG. 14 and FIG. 15, an inner protrusion 208 b is provided in front of the upper container 208, and the second rear is located on the rear side upper end (side flange) or rear upper end (back flange) of the lower container 206. The projections 214 and 215 are provided, and the inner projection 208b and the second rear projection 214 or 215 come into contact with each other in a state where the upper container 208 is moved to the rearmost side, thereby preventing the upper container from going over to the rear and dropping off. Functions as a positioning stopper.

  As described above, in the present embodiment, the inner protrusion 208b on the side surface of the upper container 208 can be used as a stopper function for preventing the container from dropping backward due to the forward and backward movement of the upper container 208, and the rigidity of the lower container Strength can be improved to prevent deformation, and a stopper function can be provided. In addition, when providing the 2nd back protrusion part 215 in a back upper end part (back surface flange part), you may use the wall surface of the back flange part 206c instead of providing newly separately.

  Further, since the inner protrusions 208b are disposed on both side surfaces of the upper container 208, they are disposed at both ends of the lower container 206, and the protrusions do not damage the contents stored in the lower container.

  Further, as shown in FIGS. 13 and 14, an outer protrusion 208a is provided in front of the upper container 208, and a front protrusion 216 (groove portion) is formed in front of the upper side (side flange) of the lower container 206. The outer protrusion 208a and the front protrusion 216 are in contact with each other in a state where the upper container 208 is moved to the forefront, and functions as a positioning stopper that prevents the upper container 208 from overtraveling or dropping off.

  As described above, in the present embodiment, the outer protrusion 208a on the side surface of the upper container 208 can be used as a stopper function for preventing the container from dropping forward due to the back and forth movement of the upper container 208, and the rigidity of the lower container Strength can be improved to prevent deformation, and a stopper function can be provided.

  As described above, since the refrigerator according to the present invention can secure a wide actual storage space, it can be used for a refrigerator having a drawer-type storage room, and further, such as a unit kitchen equipped with a drawer. It can also be developed in fields that require design design.

100 Refrigerator 101 Insulation box 102 Cold room 103 Vegetable room (storage room)
104 Freezer room (storage room)
105 Ice Making Room 106 Switching Room 107 Heat Insulating Door 108 Partition Wall 108a Bottom Stepped Part 110 Inner Box 110a Side Stepped Part 111 Heat Insulating Material 112 Outer Box 145 Rotating Support Member 146 Rotating Support Member Holding Part 201 Drawer Door 201a Hand Held Part 202 Rail Device 203 Top rail (moving rail)
205 Door frame 206 Lower container 206a Front flange part 206b Side flange part 206c Rear flange part 206d Projection part 207 Packing 208 Upper container 208a Outer projection part 208b Inner projection part 210a Outer rib 210b Inner rib 211 Inner plate 212 Cold air communication port 213 First 214 Rear projection or groove 214 Second rear projection 215 Second rear projection 216 Front projection or groove 221 Middle rail (moving rail)
222 Cabinet rail (fixed rail)
223 Rail mounting portion 241 Bending portion 261 Narrow width portion 262 Step portion 270, 280 Rail holding member 270a, 280a Rail holding portion 270b, 280b Inward fall prevention means 281 Enlarged portion 301 Container fixing means 401 Bottom wall 401a Bottom step portion

Claims (6)

A heat insulating box made of an inner box, an outer box, a heat insulating material filled between the inner box and the outer box, a storage chamber formed inside the heat insulating box and having an open front surface, and the storage chamber A lower container having an upper surface opened therein, an upper container that slides on an upper portion of the lower container, a drawer door that freely opens and closes the front opening of the storage chamber, and the lower container is moved forward and backward together with the drawer door The lower container is supported by the rail apparatus at both ends at the bottom, and provided with an outer rib and an inner rib at the upper end of the side surface of the lower container, and on the side surface of the upper container. Providing a projection and an inner projection, arranging the outer projection between the outer rib and the inner rib, arranging the inner projection on the inner surface of the inner rib, and the upper container on the lower container A refrigerator characterized by sliding. The refrigerator according to claim 1, wherein the inner protrusion is provided in the entire depth direction of the upper container. The refrigerator according to claim 2, wherein a cold air communication port is provided at regular intervals in the vicinity of the inner protrusion on the side surface of the upper container. In the state where the outer protrusion is provided in front of the upper container, the first rear protrusion or groove is provided behind the upper side (side flange) of the lower container, and the upper container is moved rearward. The refrigerator according to claim 1, wherein the outer protrusion and the first rear protrusion or groove are in contact with each other. The inner protrusion is provided in front of the upper container, and a second rear protrusion is provided at the rear side upper end part (side flange part) or the rear upper end part (back flange part) of the lower container. 2. The refrigerator according to claim 1, wherein the inner protrusion and the second rear protrusion are in contact with each other in a state of being moved in the direction. The outer protrusion is provided in front of the upper container, the front protrusion or groove is provided in front of the upper side (side flange) of the lower container, and the outer protrusion is moved forward. The refrigerator according to claim 1, wherein the refrigerator comes into contact with the front protrusion or the groove.