JP2013204827A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a rail device from falling down inward with a simple configuration, secure a large actual storage volume in a storage chamber, and achieve a smooth opening/closing operation even when a large load is applied to a container.SOLUTION: A refrigerator includes a rail device allowing a container 206 to move back and forth and a rail holding member 270 restricting a position where the rail device is fixed. By fixing the rail device and the rail holding member 270 with a screw 400 having an axis in a vertical direction with respect to a bottom face of the container 206 through a partitioning wall 108, it is possible to prevent the rail device from falling down inward, secure a large actual storage volume in a storage chamber, and achieve a smooth opening/closing operation even when a large load is applied to the container 206.

Description

  The present invention relates to a refrigerator provided with a drawer-type storage chamber, and more particularly to a rail device mounting structure.

  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 chamber is configured to be pulled back and forth by a drawer device fixed to the inner wall of the storage chamber (see, for example, Patent Document 1).

  FIG. 14 is a view showing a side cross section of a conventional refrigerator.

  In the conventional refrigerator shown in FIG. 14, the heat insulating box 1 is formed of a metal outer box 12, a resin inner box 13, and a heat insulating material 11 filled between the outer box 12 and the inner box 13. Has been.

  A storage room such as a freezer room or a vegetable room (not shown) is formed inside the inner box 13. A reinforcing member 15 is provided on the side surface of the inner box 13 on the heat insulating material 11 side. The rail 9 is connected by a reinforcing member 15 and a screw 22 so as to sandwich the inner box 13, and is fixed to a side surface of the inner box 13.

  On the other hand, the support member 6 fixed to the drawer door (not shown) and supporting the container (not shown) is provided with a roller 8. Then, by placing the roller 8 on the rail 9, the container can be taken in and out of the heat insulating box 1 together with the drawer door, and a drawer type storage chamber is configured.

Japanese Patent Laid-Open No. 9-033163

  However, in the configuration in which the left and right ends of the container are supported by the support member 6, the load on the rail 9 increases when the amount of stored items in the container increases due to the increase in the internal volume of the container.

  In particular, a force acts on the left and right rails 9 together with the reinforcing member 15 in the direction of falling into the storage chamber side (the anti-heat insulating material 11 side) of the inner box 13. For this reason, there is a possibility that the inner box 13 is deformed and the drawer door cannot be moved smoothly back and forth.

  Alternatively, in order to prevent such deformation, the reinforcing member 15 can be turned not only to the side surface but also to the bottom surface of the storage chamber as in the conventional configuration described in Patent Document 1. However, there is a problem that the manufacturing cost increases.

  The present invention solves the above-described conventional problems, and can reduce the size and cost of the reinforcing member for fixing the rail device, and can secure a large actual storage volume in the drawer-type storage chamber, It is an object of the present invention to provide a refrigerator having a high-quality and easy-to-use drawer-type storage room that can smoothly open and close the drawer even when a large load is applied.

  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 formed inward and having a front opening, a container provided inside the storage chamber, a rail device that allows the container to move back and forth, and a rail holding member that regulates a fixing position of the rail device The rail device and the rail holding member are fixed by fastening means having an axis perpendicular to the bottom surface of the container.

  According to this, it is possible to prevent the rail device from falling down with a simple configuration and to secure a large actual storage volume in the storage chamber. A smooth opening / closing operation is possible even when a large load is applied to the container.

  The refrigerator of the present invention can improve the operability of the opening / closing operation while preventing deformation of the rail device in the drawer-type storage room and securing a large actual storage space.

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. The perspective view which shows the drawer door and door frame of the refrigerator in Embodiment 1 of this invention. The perspective view which shows the door frame of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows the partition wall 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 modification of the partition wall in the freezer compartment of the refrigerator in Embodiment 1 of this invention, and the attachment part of a rail apparatus. Sectional drawing which shows the partition wall and attachment part of a rail apparatus in the vegetable compartment of the refrigerator in Embodiment 1 of this invention Sectional drawing which shows the modification of the attachment part of the inner box and rail apparatus in the vegetable compartment of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows the modification of the attachment part of the inner box and rail apparatus in the vegetable compartment of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows another modification of the inner box in the vegetable compartment of the refrigerator in Embodiment 1 of this invention, and the attachment part of a rail apparatus. 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 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 container provided inside the storage chamber, a rail device that allows the container to move back and forth, and a rail holding member that regulates a fixed position of the rail device, the rail device and the rail The holding member is fixed by fastening means having an axis perpendicular to the bottom surface of the container.

According to this, at least a part of the rail holding member is disposed below the rail device, and the fastening means receives the load applied to the rail device in the axial direction. Can be prevented. Further, since the shearing force is not applied to the fastening means, the fastening means is not loosened, and a gap is not generated between the rail device and the rail holding member. For this reason, even when a heavy load is applied to the container, the rail device can be reliably fixed. Moreover, since a rail holding member and the attachment part of a rail apparatus and a rail holding member can be reduced in size, a wide real storage volume can be ensured in a storage chamber. As a result, the operability of the opening / closing operation can be improved while securing a wide actual storage space.

  In the second invention, in particular, the rail device and the rail holding member according to the first invention are fixed via the bottom surface of the inner box, so that at least a part of the rail holding member is part of the rail device. Since the rail device is disposed below, the rail device can be securely fixed to the inner box while preventing the rail device from falling down. Moreover, since a rail holding member and the attachment part of a rail apparatus and a rail holding member can be reduced in size, a wide real storage volume can be ensured in a storage chamber.

  According to a third invention, in particular, the rail device and the rail holding member according to the first invention are fixed via an upper surface of a partition wall that divides the inner box in a vertical direction. At least a part of the rail device is disposed below the rail device, and the rail device can be securely fixed to the partition wall while preventing the rail device from falling down. Moreover, since a rail holding member and the attachment part of a rail apparatus and a rail holding member can be reduced in size, a wide real storage volume can be ensured in a storage chamber.

  According to a fourth aspect of the invention, in particular, the rail device according to any one of the first to third aspects includes a fixed rail fixed to the rail holding member, and a moving rail supported by the fixed rail. Even when a large load is applied to the container, the moving rail moves smoothly, so that the operation force can be reduced and the usability can be improved.

  In a fifth aspect of the invention, in particular, in the fourth aspect of the invention, an intermediate rail is provided between the fixed rail and the moving rail, and the intermediate rail, the fixed rail, and the moving rail are supported by a rotation support member. Thus, even when a large load is applied to the container, the moving rail moves smoothly, so that the operation force can be reduced, and the provision of the intermediate rail can increase the pull-out allowance of the rail device. It can be pulled out to the back of the container, it can be looked up to the back of the container, and the container can be easily attached to and detached from the rail device, so that the usability can be improved.

  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 arranged 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 101 that are telescopically connected and provided inside the storage room. A rail device 202 that allows the container 206 to move back and forth is provided.

  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 both ends of the bottom of the container 206. That is, the container 206 is attached to the rail device 202 through the door frame 205.

  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 inner box 110 and the partition wall 108, 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. Furthermore, in a narrow sense, the middle rail 221 is an “intermediate rail”.

  A flat rail mounting portion 223 is attached to the cabinet rail 222 or is integrally formed.

  On the top surface of the top rail 203, a hook-shaped portion 231 and a fixing hole 232 for fixing to the door frame 205 are provided. The hook-shaped portion 231 is desirably provided behind the center in the longitudinal direction of the top rail 203. The hook-shaped portion 231 is formed by cutting out a part of the upper surface of the top rail 203 into a substantially U-shape and cutting out the notch. The vertical portion rises substantially perpendicular to the upper surface of the top rail 203. A portion 231a and a horizontal portion 231b which is provided at the tip of the vertical portion 231a and bent forward substantially horizontally with respect to the upper surface of the top rail 203 are formed. The length of the horizontal part 231b is configured to be longer than the height of the vertical part 231a.

  The fixing hole 232 is a screw hole provided from the front end of the top rail 203 to have a length necessary for ensuring the strength of the fixing hole 232 and / or to correspond to a round hole provided in the door frame 205. It is.

  Next, the drawer door 201 and the door frame 205 will be described. FIG. 4 is a perspective view showing a state in which the drawer door and the door frame are connected in Embodiment 1 of the present invention.

  As shown in FIG. 4, the door frame 205 is connected to the lower side of the drawer door 201 in the vertical direction and to both ends in the horizontal direction. The door frame 205 is fixed to the side of the inner plate 211 that covers almost the entire back side surface of the drawer door 201. 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.

  Since the inner plate 211 is mainly molded from resin, even if the inner plate 211 is directly fixed to the inner plate 211 with screws, it is not possible to secure a strength that can withstand the load applied to the door frame 205. Therefore, as a means for securely fixing the door frame 205, the door frame 205 is fixed to a reinforcing plate (not shown) embedded in the heat insulating material in the drawer door 201 with screws or the like via the inner plate 211. .

  The reinforcing plate extends in the vertical direction of the inner plate 211 and is mainly formed of a metal material such as iron. Two reinforcing plates are provided independently corresponding to the left and right door frames 205.

  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 the above-described reinforcing plate with screws or the like via the inner plate 211. Above the container fixing means 301, a gap is provided between the inner plate 211 and a part of the container 206, specifically, a rib around the opening of the container 206 is inserted into the gap so that the container 206 is Can be fixed.

  The door frame 205 will be described in more detail with reference to FIG. FIG. 5 is a perspective view showing a state where the drawer door and the door frame are connected in Embodiment 1 of the present invention.

The door frame 205 includes an upper surface portion 282 that covers the upper surface of the top rail 203 and a side surface portion 283 that covers the side surface of the top rail 203 on the outer side of the warehouse. The total length of the upper surface portion 282 and the side surface portion 283 is preferably longer than the total length of the top rail 203. According to this, the load applied by the stored items in the container 206 can be uniformly distributed to the top rail 203.

  An end of the upper surface portion 282 on the inner side is cut and raised at a substantially right angle, and a main body portion 284 that is substantially parallel to the side surface portion 283 is formed. The front end of the main body 284 is provided with an enlarged portion 281 that protrudes upward from the main body 284. The front end of the enlarged portion 281 is provided with a bent portion 241 that is bent so that the edge is along the inner plate 211 of the drawer door 201. The bent portion 241 is attached to the drawer door 201 so that the upper end of the bent portion 241 is positioned below the center of the drawer door 201 in the height direction. Further, it is attached to the part of the drawer door 201 above the top rail 203.

  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. Insufficient strength of the attachment portion between the rail device 202 and the drawer door 201 attached to the lower portion can be compensated. That is, the stress generated when the drawer door 201, in particular, the handle portion 201a of the drawer door 201 is pulled out or pushed back, can be reduced from being concentrated on the front end portion of the door frame 205.

  At the upper end of the main body portion 284, a flange portion 285 formed by being bent so as to be substantially horizontal with respect to the upper surface portion 282 is provided. A flange cutout portion 285a in which a part of the flange is cut out is provided in front of and / or behind the flange portion 285. The container 206 can be fixed by inserting a part of the container 206 into the flange notch 285a.

  The upper surface portion 282 is provided with a rectangular hole 286 and a round hole 287 for fixing to the top rail 203. The rectangular hole 286 is preferably provided behind the center in the longitudinal direction of the door frame 205. It is further desirable that the main body 284 is provided behind the center in the longitudinal direction. According to this, the force generated when the handle portion 201 a is pulled out or pushed back can be further distributed to the rear of the door frame 205. The rectangular hole 286 is large enough to fit the hook-shaped portion 231 provided on the top rail 203.

  The round hole 287 has a length necessary for securing the strength of the round hole 287 from the front end of the upper surface portion 282 and / or a hole provided so as to correspond to the fixing hole 232 provided in the top rail 203. It is.

  A main body notch 288 is formed in the main body 284 at a position corresponding to the rectangular hole 286. The main body notch portion 288 is formed by cutting a part of the main body portion 284 into a substantially U shape, raising the notch, and bending the notch substantially perpendicularly to the main body portion 284 to the outside of the cabinet. . For this reason, a body hole 289 is formed at a location where the body notch 288 of the body 284 is formed.

  Here, a method of fixing the door frame 205 and the top rail 203 will be described. First, the hook-shaped portion 231 provided on the top rail 203 is hooked into the rectangular hole 286 of the door frame 205. That is, the vertical part 231a of the bowl-shaped part 231 is passed through the rectangular hole 286 to the upper part of the upper surface part 282 of the door frame 205, and the door frame 205 is shifted forward relative to the top rail 203, thereby forming the bowl-shaped part 231. The horizontal portion 231b is moved to the upper surface of the front end portion of the rectangular hole 286. Next, a screw is screwed into the fixing hole 232 provided in the top rail 203 from above the upper surface portion 282 of the door frame 205 through the round hole 287 of the door frame 205.

  As a result, the door frame 205 and the top rail 203 are fixed to each other by the first fixing portion fixed by the bowl-shaped portion 231 and the rectangular hole 286, and the second fixing portion fixed by the rectangular hole 286, the round hole 287, and the screw. The two places are securely fixed. By attaching at least one of the fixing parts to the hooking system composed of the projecting part and the locking part, the door frame 205 can be easily attached to and detached from the top rail 203. In addition, it is desirable to make it the system which hooks a 2nd fixing | fixed part from the point which resists the force which acts on a 2nd fixing | fixed part upward.

  Further, by covering the rectangular hole 286 and the horizontal portion 231b of the flange-shaped portion 231 protruding from the upper surface of the upper surface portion 282, it is possible to prevent the hands and fingers from being damaged by the rectangular hole 286 and the flange-shaped portion 231 with a simple configuration. And safety is improved. Furthermore, since it becomes difficult to see the first fixed portion, the appearance design can be improved.

  Note that the hook-shaped portion 231 and the fixing hole 232 may be provided on the side surface of the top rail 203, and the rectangular hole 286 and the round hole 287 may be provided on the side surface portion 283 and the main body portion 284.

  The attachment of the refrigerator inner box 110 and the rail device 202 will be described by taking the freezer compartment 104 of the drawer-type storage compartment as an example. FIG. 6 is a cross-sectional view showing the inner box and the mounting portion of the rail device in the freezer compartment of the refrigerator in the first embodiment of the present invention.

  First, the rail device 202 will be described in more detail.

  The cross-sectional shape perpendicular to the longitudinal direction of the cabinet rail 222 is not symmetrical, and one of the cabinet rails 222 is provided with a rail mounting portion 223 that once rises upward from the bottom surface and protrudes in the width direction. And it is being fixed to the upper surface of the partition wall 108 which divides the vegetable compartment 103 and the freezer compartment 104 in the vertical direction by the rail attaching part 223.

  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 is connected to the middle rail 22.
1 is movable in the longitudinal direction on the cabinet rail 222.

  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 partition wall 108 in a state of being assembled in advance. For this reason, the clearance between each rail can be set to the minimum. For this reason, rattling is suppressed, the moving rail moves smoothly, and the usability can be improved.

  Further, since the middle rail 221 is provided, the rail device 202 can be pulled out to a large extent, so that the container 206 can be pulled out to the back. As a result, it is possible to look up to the inner part of the container 206, and to easily attach and detach the container 206 to and from the rail device 202, thereby improving usability.

  Next, attachment of the rail device 202 to the partition wall 108 will be described.

  As shown in FIG. 6, rail mounting portions 223 formed integrally with the cabinet rails 222 are disposed so as to abut on the upper surfaces of the upper surface stepped portions 108a provided on both sides of the partition wall 108, and screws Fix by 400. The screw 400 is provided so that its central axis is perpendicular to the bottom surface of the container 206. The screw 400 is a fastening means in the present invention, and is not limited to a screw, and may be a tapping screw or a rivet.

  At this time, since the partition wall 108 serving as a mounting surface is mainly molded from resin, even if screws are directly fixed to the partition wall 108, it is not possible 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 outer wall of the partition wall 108.

  The rail holding member 270 is mainly formed of a metal material such as iron. In addition, the rail holding member 270 is fixed in advance on a predetermined position on the inner surface of the outer wall of the partition wall 108, and then the foam insulating material is filled in the partition wall 108 and buried in the heat insulating material 111, thereby The holding force can be further improved.

  The rail holding member 270 is integrally formed with a rail holding portion 270a having a shape along the inside of the upper surface of the upper surface stepped portion 108a and a reinforcing means 270b having a shape along the inside of the side surface of the partition wall 108. The rail holding part 270a is a horizontal flange part formed so as to be in close contact with the upper surface step part 108a of the partition wall 108 from the heat insulating material 111 side, and the reinforcing means 270b is a vertical flange part formed at the lower part of the rail holding part 270a. is there.

  The reinforcing means 270b is formed by being bent along the inner side of the side surface of the partition wall 108 from the side portion of the rail holding portion 270a. Further, the lower end portion of the reinforcing means 270b has a bent portion formed by bending outward. Thus, by providing the rail holding member 270 with a bend, the strength of the rail holding member 270 itself is improved. Furthermore, when the reinforcing means 270b abuts against the side surface of the partition wall 108 and the reinforcing means 270b bites into the heat insulating material 111, the load applied to the rail holding portion 270a is dispersed, and deformation of the upper stepped portion 108a is prevented. be able to.

In addition, as shown in FIG. 7, the reinforcement means 270b may be bent and extended from the side part of the rail holding part 270a to the refrigerator compartment side. More specifically, the reinforcing means 270b is
After bending along the rising edge of the upper surface stepped portion 108a from the side of the rail holding portion 270a, a lateral flange portion is formed along the inner side of the central portion serving as the reference surface of the partition wall 108, and the reinforcing means 270b. The tip of is bent downward.

  As shown in FIGS. 6 and 7, by providing the reinforcing means 270b along the inside of the outer wall of the partition wall 108, the flow of the foam heat insulating material is inhibited even when the foam heat insulating material is filled in the partition wall 108. There is nothing.

  The partition wall 108 serving as the bottom wall of the freezer compartment 104 has upper surface stepped portions 108a formed on both sides, and the upper surface stepped portion 108a is formed one step higher than the central portion serving as the reference surface of the partition wall 108 toward the depth direction. ing. Further, a side stepped portion 110 a is formed on the side wall surface portion of the inner box 110 located on the side of the rail device 202. 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.

  With such a configuration, the rail device 202 jumping into the storage space can be suppressed, the full width dimension of the container 206 in the freezer compartment 104 can be increased, and the ineffective space in the storage chamber can be reduced.

  Further, since the rail device 202 is assembled by being placed on the upper surface stepped portion 108a, workability can be improved. Furthermore, since the wall thickness of the partition wall 108 increases in the upper surface stepped portion 108a, the metal rail device 202 in the freezer compartment 104 is cooled, and the partition wall that becomes the top surface of the vegetable compartment 103 in the lower part It is possible to prevent 108 from condensing.

  Furthermore, since the rail device is provided on the upper surface stepped portion 108a, the rail device 202 does not come into contact with the condensed water even when the condensed water collects in the central portion serving as the reference surface of the partition wall 108. For this reason, dew condensation water does not freeze and the rail apparatus 202 does not adhere. Thereby, the drawer door 201 can be opened and closed smoothly.

  Next, the attachment of the refrigerator inner box 110 and the rail device 202 will be described by taking the vegetable compartment 103 of the drawer-type storage compartment as an example. FIG. 8 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. 8, the rail holding member 280 of the vegetable compartment 103 formed at the lowermost part is disposed in the heat insulating material 111, and the rail mounting portion 223 formed integrally with the cabinet rail 222 is replaced with the bottom of the inner box 110. Are arranged so as to come into contact with the upper surface of the bottom surface stepped portion 401 a provided on both sides thereof, and are fixed to the rail holding member 280 with screws 400. The screw 400 is provided so that its central axis is perpendicular to the bottom surface of the container 206.

  The rail holding member 280 is substantially L-shaped and includes a rail holding portion 280a that is a horizontal flange portion and a reinforcing means 280b that is a vertical flange portion. The rail holding portion 280a is in close contact with the bottom surface portion of the inner box 110, and the reinforcing means 280b is in close contact with the bottom surface portion of the inner box 110. The tip of the reinforcing means 280b is bent in the direction away from the inner box 110 in a lateral direction.

  Thus, the intensity | strength of rail holding member 280 itself improves by making the rail holding member 280 substantially L-shaped. Furthermore, when the reinforcing means 280b abuts against the side surface of the inner box 110 and the tip portion of the reinforcing means 280b bites into the heat insulating material 111, the load applied to the rail holding portion 280a is dispersed, and the bottom step portion 401a is deformed. Can be prevented. In addition, by providing the reinforcing means 280b along the side surface of the inner box 110, the flow of the foam heat insulating material is not hindered when the foam heat insulating material is filled between the outer box 112 and the inner box 110. .

  In addition, as shown in FIGS. 9-11, the structure of the reinforcement means 280b may differ. More specifically, in FIG. 9, the reinforcing means 280b extends from the side portion of the rail holding portion 270a, which is a lateral flange portion formed so as to be in close contact with the bottom surface stepped portion 401a from the heat insulating material 111 side, along the lower side. Further, the tip of the reinforcing means 270b is bent in a direction away from the inner box 110.

  Thus, the intensity | strength of rail holding member 280 itself improves by making the rail holding member 280 substantially L-shaped. Furthermore, when the reinforcing means 280b bites into the heat insulating material 111, the load applied to the rail holding portion 280a is dispersed, and deformation of the bottom surface step portion 401a can be prevented.

  In FIG. 10, the reinforcing means 280b is once bent from the side portion of the rail holding portion 270a, which is a lateral flange portion formed so as to be in close contact with the bottom surface step portion 401a from the heat insulating material 111 side. After the rib is formed at the end of the portion 401a, the rib is further bent away from the inner box 110.

  Thus, providing the ribs on the rail holding member 280 improves the strength of the rail holding member 280 itself. Furthermore, when the reinforcing means 280b bites into the heat insulating material 111, the load applied to the rail holding portion 280a is dispersed, and deformation of the bottom surface step portion 401a can be prevented.

  In FIG. 11, the reinforcing means 280b is provided along the inside of the rise of the bottom surface step portion 401a from the side portion of the rail holding portion 270a which is a lateral flange portion formed so as to be in close contact with the bottom surface step portion 401a from the heat insulating material 111 side. After being bent, a lateral flange portion is formed along the inside of the bottom surface of the inner box 110, and the tip portion of the reinforcing means 270b is bent downward.

  Thus, the intensity | strength of rail holding member 280 itself improves by making the rail holding member 280 substantially L-shaped. Furthermore, the load applied to the rail holding portion 280a is dispersed by the reinforcement means 280b coming into contact with the rise of the inner box 110, and the leading end portion of the reinforcement means 280b gets into the heat insulating material 111, and the bottom step 401a is deformed. Can be prevented. Further, by providing the reinforcing means 280b along the inner box 110, the flow of the foam heat insulating material is not hindered when the foam heat insulating material is filled between the outer box 112 and the inner box 110.

  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.

  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.

  With such a configuration, the rail device 202 that protrudes into the storage space can be suppressed, the overall width dimension of the container 206 can be increased in the vegetable compartment 103, 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.

Furthermore, since the rail device 202 is provided on the bottom surface stepped portion 401a, the rail device 202 does not come into contact with the condensed water even when the condensed water accumulates in the central portion serving as the reference surface of the partition wall 108. For this reason, dew condensation water does not freeze and the rail apparatus 202 does not adhere. Thereby, the drawer door 201 can be opened and closed smoothly.

  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. Heat insulation can be secured 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.

  Finally, the positional relationship between the container 206 and the rail device 202 will be described in more detail.

  FIG. 12 is a cross-sectional view showing a state where containers are arranged between the rail devices of the refrigerator in the first embodiment of the present invention from the back side.

  As shown in FIG. 12, the container 206 is a container for storing beverages, frozen foods, and the like filled in vegetables and PET bottles, and is a resin box having an upper surface opened. The 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 portion. The container 206 is supported by the door frame 205 and the top rail 203 by arranging the narrow portion 261 between the two top rails 203 and placing the step 262 on the upper surface of the door frame 205. .

  Thus, since the top rail 203 is provided at both corners of the lower part of the drawer door 201, it is possible to keep the narrow width portion 261 of which the width has to be reduced within the container 206 as short as possible. Therefore, the container 206 can adopt a shape that makes the storage volume as large as possible.

  FIG. 13 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. 13A, the container 206 includes a narrow portion 261 having a narrow width so that a step portion 262 facing inward is formed at both ends of the lower portion. However, as shown in FIGS. 13B and 13C, the side surface of the container 206 is substantially straight, and the container 206 is not provided with the stepped portion 262. You may support by the side of the right-and-left both ends of a bottom part (refer FIG.13 (B)), or you may support below the right-and-left both ends of the bottom part of the container 206 (refer FIG.13 (C)).

  In FIG. 13, the positional relationship between the rail device 202 and the container 206 is shown, and the door frame 205 is omitted and not shown.

  As described above, in the present embodiment, the rail mounting portion 223 and the rail holding member 270 of the cabinet rail 222 are perpendicular to the bottom surface of the container 206 via the upper portion of the upper surface stepped portion 108a of the partition wall 108. It is fixed by a screw 400 having a shaft. Alternatively, the rail mounting portion 223 and the rail holding member 280 are fixed by screws 400 having an axis in a direction perpendicular to the bottom surface of the container 206 via the upper portion of the bottom surface stepped portion 401a at the bottom of the inner box 110. It is.

According to this, the rail holding portions 270a and 280a of the rail holding members 270 and 280 are disposed below the rail device 202, and the screw 400 receives a load applied to the rail device 202 in the axial direction. Therefore, the rail device 202 can be prevented from falling over. Further, since no shearing force is applied to the screw 400, the screw 400 is not loosened, and a gap is not generated between the rail mounting portion 223 and the rail holding members 270 and 280. For this reason, even when a large load is applied to the container 206, the rail device 202 can be reliably fixed to the partition wall 108 and the inner box 110.

  Further, since the rail holding members 270 and 280 are disposed below the rail device 202, the rail holding members 270 and 280 can be reduced in size. Further, since the axis of the screw 400 is perpendicular to the bottom surface of the container 206, the width of the bottom surface of the container 206 can be increased. Thereby, the wide container 206 can be accommodated in the storage room.

  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. If the rail device 202 is attached to the vicinity of the central portion in the vertical direction of the drawer door 201, the rail device 270, 280 is disposed below the rail device 202 as in the position of the present embodiment. The rail mounting part 223 of 202 needs to be enlarged in the vertical direction. As a result, the width of the container 206 cannot be increased, and the actual storage space of the storage chamber is reduced.

  However, as in the present embodiment, when the attachment portion between the drawer door 201 and the top rail 203 is at the lower portion of the drawer door 201, the attachment portion between the rail device 202 and the rail holding members 270 and 280 can be made small. The width of 206 can be increased. Further, the position serving as a fulcrum for the force applied in the inward direction can be set downward, and the moment applied to the mounting portion is reduced, so that the inward falling can be prevented.

  Furthermore, in the present embodiment, since the first fixing portion of the door frame 205 is provided behind the center in the longitudinal direction of the door frame 205, the door frame 205 covers almost the entire length of the top rail 203. The load applied to the container 206 can be distributed over the entire top rail 203, and deformation of the rail device 202, the upper surface stepped portion 108 a of the partition wall 108, and the bottom surface stepped portion 401 a of the bottom portion of the inner box 110 can be suppressed.

  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.

DESCRIPTION OF SYMBOLS 1,101 Heat insulation box 6 Support member 8 Roller 9 Rail 11, 111 Heat insulating material 12, 112 Outer box 13, 110 Inner box 15 Reinforcement member 22 Screw 100 Refrigerator 102 Refrigeration room 103 Vegetable room (storage room)
104 Freezer room (storage room)
DESCRIPTION OF SYMBOLS 105 Ice making room 106 Switching room 107 Heat insulation door 108 Partition wall 108a Upper surface level | step difference part 110a Side surface level | step difference part 145 Rotation support member 146 Rotation support member holding part 201 Drawer door 201a Hand part 202 Rail device 203 Top rail (moving rail)
205 Door frame 206 Container 207 Packing 211 Inner plate 221 Middle rail (moving rail)
222 Cabinet rail (fixed rail)
223 Rail mounting portion 231 Gutter-shaped portion 231a Vertical portion 231b Horizontal portion 232 Fixing hole 241 Bending portion 261 Narrow width portion 262 Step portion 270, 280 Rail holding member 270a, 280a Rail holding portion 270b, 280b Reinforcement means 281 Enlarged portion 282 Upper surface Portion 283 Side portion 284 Body portion 285 Flange portion 285a Flange cutout portion 286 Rectangular hole 287 Round hole 288 Body cutout portion 289 Body hole portion 301 Container fixing means 400 Screw 401 Bottom wall 401a Bottom step portion

Claims (5)

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 container provided inside, a rail device that enables the container to move back and forth, and a rail holding member that regulates a fixed position of the rail device, the rail device and the rail holding member include: A refrigerator fixed by fastening means having an axis in a direction perpendicular to the bottom surface of the container. The refrigerator according to claim 1, wherein the rail device and the rail holding member are fixed via a bottom surface of the inner box. The refrigerator according to claim 1, wherein the rail device and the rail holding member are fixed via an upper surface of a partition wall that divides the inner box in a vertical direction. The refrigerator according to any one of claims 1 to 3, wherein the rail device includes a fixed rail fixed to the rail holding member and a moving rail supported by the fixed rail. The refrigerator according to claim 4, wherein an intermediate rail is provided between the fixed rail and the moving rail, and the intermediate rail, the fixed rail, and the moving rail are supported by a rotation support member.