JP5246361B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and more 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 or Patent Document 2).

  FIG. 13 is a view showing a side cross section of a conventional refrigerator 100.

  A conventional refrigerator 100 shown in FIG. 13 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 206 as 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.

  Further, the container which 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 vegetable compartment 103 and the freezer compartment 104 are each configured as described above, and thus are drawer-type storage rooms that can be taken in and out of the heat insulating box 101.

  Here, the drawer door 201 for obstruct | occluding front opening in the conventional refrigerator is demonstrated.

  FIG. 14 is a perspective view showing the drawer door from the back side.

  As shown in FIG. 14, 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 drawer door 201, and a rail device 202 (not shown) provided with a moving rail and a fixed rail is slidably engaged, and the drawer door 201 remains in a vertical state. It can be pulled out and pushed back horizontally.

  FIG. 15 is a cross-sectional view showing the relationship between the drawer door and the container from the back side of the refrigerator.

  As shown in FIG. 15, the container 206 is disposed between the two rail devices 202, and is supported by the two rail devices 202 at a substantially central portion in the height direction of the container 206.

JP 2006-177653 A JP 2006-214642 A

  However, in recent years, there is a tendency to increase the internal volume that can be actually stored by devising the arrangement of the components of the refrigerator.

  The container provided in the conventional drawer-type storage chamber is only placed on the rail device, and by increasing the inner volume of the container, the stored items stored in the container further increase and the load increases. When the drawer door is opened, a large load is applied to the rail device, and in particular, stress applied to the end portion of the rail device, which is an attachment portion between the rail device and the drawer door, is increased.

  Moreover, there is a possibility that the rail device is deformed and falls inward due to an increase in load applied to the rail device, and there is a possibility that the drawer door cannot be moved smoothly back and forth.

  This is because only the rail device 202 supports the container 206 that is interlocked with the opening of the drawer door when the drawer door is fully opened, and a drawer door that is insulated and foamed inside is provided at the end of the rail device 202. Therefore, in addition to the load of the container 206, the load of the drawer door 201 is applied to the end portion of the rail device 202. Further, there is a case where a vacuum heat insulating material is embedded in the drawer door 201 from the viewpoint of energy saving, and the load on the rail device 202 is increased. For this reason, even if the rail device 202 is deformed by the opening / closing operation of the drawer door 201 for a long period of time, and the drawer door 201 closes the opening of the vegetable compartment 103 or the freezer compartment 104, the drawer door 201 does not touch the opening. There is a possibility that it is distorted and closed, or the opening cannot be sealed with a seal portion (not shown) of the drawer door 201, and the indoor cold air leaks and cannot be cooled to a predetermined temperature.

  This invention solves the said conventional subject, and it is a refrigerator provided with the drawer-type storage chamber, Comprising: It aims at provision of the refrigerator which ensured the wide real storage volume in the drawer-type storage chamber.

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 drawer-type storage chamber that is formed inward and has a front opening, a drawer door that closes the front opening of the storage chamber so as to be openable and closable, a partition wall that partitions the storage chamber of the heat insulation box, and a fixed rail A movable rail, fixed to the inner box wall in a state in which the fixed rail and the movable rail are preliminarily incorporated, and extendably connect the drawer door and the heat insulating box body, and the interior of the storage chamber In the refrigerator including the rail device that enables the container provided in the front and rear to move back and forth, the rail device is connected to the lower side in the vertical direction of the drawer door and to both ends in the horizontal direction, and the rail device is One more than the center that becomes the reference plane of the bottom wall Higher bottom wall thickness is placed on the bottom step portion formed toward the depth direction to be larger, rail mounting portions on the side face stepped portion formed recessed into an outer box side than the upper side wall portion of the inner box Is fixed to prevent condensation and flooding of the rail device .

  Thereby, since the rail device is attached to the left and right ends of the bottom of the container, it is possible to reduce the formation of irregularities on the container surface in the middle of the space space from the upper surface opening of the container to the bottom of the lower surface, Since it can be formed on a flat surface, it is possible to increase the size and volume of the container, and because the rail device is attached to the left and right ends of the bottom of the container, the size of the container supported by the rail device can be increased. It is possible to increase the volume.

  The refrigerator of the present invention can secure a large actual storage space in a drawer-type storage room.

Front view of the refrigerator in Embodiment 1 of the present invention The figure which shows the AA line cut surface of FIG. 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 which the refrigerator in Embodiment 1 of this invention connected, the rail apparatus, and the container which can be attached or detached. Cross-sectional view of the main part when the container of FIG. 4 is mounted Sectional drawing which shows the state which has arrange | positioned the container between the rail devices of the refrigerator in Embodiment 1 of this invention from the back side. The principal part enlarged view which showed arrangement | positioning of the rail apparatus and container of the refrigerator in Embodiment 1 of this invention The perspective view which shows a state when mounting | wearing with the container of FIG. The perspective view of the inner case and rail apparatus in Embodiment 1 of this invention Section A sectional view of FIG. B sectional view of FIG. Perspective view of rail holding member Sectional view showing a conventional refrigerator The perspective view which shows the relationship between the conventional drawer door and a rail Sectional drawing which shows the relationship between the conventional rail and a container

According to the first aspect of the present invention, there is provided 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, and a front surface formed inside the heat insulating box. Has a drawer-type storage chamber that opens, a drawer door that closes the front opening of the storage chamber so as to be openable and closable, a partition wall that partitions the storage chamber of the heat insulation box, a fixed rail, and a moving rail, The fixed rail and the movable rail are preliminarily assembled to the inner box wall, and the drawer door and the heat insulating box are connected to each other in a telescopic manner, and the container provided inside the storage chamber is moved back and forth. In the refrigerator provided with the movable rail device, the rail device is connected to the lower side of the drawer door in the vertical direction and to both ends in the horizontal direction, and the rail device serves as a reference surface of the bottom wall. bottom wall thickness of one step higher than the central portion is increased To be placed on the bottom step portion formed toward the depth direction, the rail attachment unit is fixed to the side step portion formed recessed into an outer box side than the upper side wall portion of the inner box, the rail device It prevents condensation and flooding .

  The invention according to claim 2 is the invention according to claim 1, wherein the rail device is fixed to a rail holding member disposed on the heat insulating material side of the inner box.

  The invention according to claim 3 is the invention according to claim 2, wherein the rail holding member is arranged in a plurality of stages in the vertical direction of the refrigerator, and the rail holding member arranged in the lowest stage is arranged in the upper stage. The rail holding member and the cross-sectional shape are different.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the rail holding member disposed at the lowermost stage is a substantially L-shaped member formed from the side wall to the bottom wall of the inner box. There is something.

According to a fifth aspect of the present invention, in the invention according to any one of the second to fourth aspects, the rail holding member is integrally formed with an inward fall prevention means for preventing an inward fall of the rail device. It is.

According to a sixth aspect of the present invention, in the invention according to any of the second to fifth aspects, the rail holding member is formed with a hole through which the heat insulating material filled is passed.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. 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 usually set at −22 to −18 ° C. for frozen storage, it may be set at a low temperature of −30 to −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.

In order to divide these different temperature zones into a plurality, partition walls 108 are installed between the temperature zones in the heat insulating box 101.

  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, the drawer-type storage chamber among the storage chambers provided in the refrigerator 100 is connected to the drawer door 201 that closes the front opening, the drawer door 201, and the heat insulating box body 101 in an extendable manner. A rail device 202 is provided that enables the container 206 provided inside the storage chamber to be moved back and forth. Further, the refrigerator 100 includes a door frame 205 and a container 206.

  Here, the door frame 205 corresponds to a “reinforcing member” in the claims.

  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.

  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 top rail 203 and the middle rail 221 correspond to a “moving rail” in the claims, and the cabinet rail 222 corresponds to a “fixed rail” in the claims.

  The fixed rail and the moving rail are each supported by a rotation support member (not shown), and the rail device 202 is fixed to the inner box 110 wall with the fixed rail and the moving rail being assembled in advance.

  In the rail device 202, a rail mounting portion 223 provided on the cabinet rail 222 is attached to the inner box 110 of the heat insulating box body 101, and the rail device 202 includes a top rail 203, a middle rail 221, and a cabinet rail 222. As a result, the entire rail device 202 can be expanded and contracted. Therefore, the drawer door 201 can be pulled out or pushed back with respect to the heat insulating box body 101 along the extendable orbit of the rail device 202.

  Specifically, among the upper and lower flanges of the middle rail 221, the cabinet rail 222 holds a portion centering on the lower flange with a plurality of bearings (not shown).

  Further, the cabinet rail 222 supports the middle rail 221 from three directions via a plurality of bearings (not shown) in the cross section, thereby holding the middle rail 221 so as to be movable in the longitudinal direction.

  Further, the top rail 203 holds a portion centering on the upper flange of the middle rail 221 with a plurality of bearings (not shown). In addition, the top rail 203 also supports the middle rail 221 from three directions via a plurality of bearings (not shown) in the cross section, thereby holding the middle rail 221 movable in the longitudinal direction.

  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, it can move in the longitudinal direction on the cabinet rail 222 via the top rail 203 and the middle rail 221.

  Further, when the middle rail 221 and the top rail 203 move in this way, they can move smoothly as a plurality of bearings (not shown) rotate.

  FIG. 4 is a perspective view showing a state in which the drawer door and the rail device are connected by the refrigerator door frame according to Embodiment 1 of the present invention.

  As shown in FIG. 4, the drawer door 201 includes an inner plate 211 that covers the front surface of the heat insulating box and a door frame 205. The inner 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, so that the drawer door 201 can be pulled out or pushed back by the function of the rail device 202. It has become.

  In order to relieve the stress generated when the drawer door 201, particularly the drawer door 201 is pulled out and pushed back while holding the upper end of the drawer door 201, the container 206 and the drawer door 201 are separated from each other. First fixing means 301 for fixing is provided on the inner plate 211 of the drawer door 201. The first fixing means 301 is installed at a position where the front flange portion 206 a having a substantially L-shaped cross section formed in the upper surface opening of the container 206 is fixed when the container 206 is placed on the rail device 202. And the front flange part 206a is inserted and fixed from the upper part to the 1st fixing means 301 formed in the insertion state of cross-sectional substantially L shape.

  The first 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. Yes. The front flange portion 206a is inserted and fixed to the first fixing means 301 from above. 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 is the back side of the inner plate 211. It is fixed to a flat metal plate (not shown) fixed in the foam heat insulating material with screws or the like via the inner plate 211.

  In this way, by fixing the front flange portion 206a of the container 206 to the first fixing means 301 provided on the upper portion of the inner plate 211 of the drawer door 201, the rail device 202 attached to the lower portion with respect to the drawer door 201 and It is possible to compensate for insufficient strength of the attachment portion with the drawer door 201 and to smoothly open and close the drawer door.

  Further, the second fixing means 303 formed integrally with the inner plate 211 abuts on the peripheral edge portion 304 forming the upper surface opening of the container 206 and prevents the front flange portion 206a from rising upward. It is the 2nd fixing means 303 which is a ridge prevention member.

  As shown in FIG. 4, the second fixing means 303 is provided between the first fixing means 301 provided on the left and right sides.

Further, as shown in FIG. 5, the detachable container 206 is fitted from above the drawer door 201, and the front flange portion 206 a is inserted into the first fixing means 301 as described above to form the peripheral edge portion that forms the upper surface opening of the container 206. 304 abuts the second fixing means 303 from above, that is, the first fixing means 301 supports and fixes the front surface portion of the container 206 from below, and the second fixing means 303 supports and fixes the front surface portion of the container 206 from above. Since the upper portion of the container 206 is supported and fixed to the inner plate 211, the rail device 202 attached to the lower portion of the drawer door 201 and the drawer door 201 are further fixed. It is possible to compensate for insufficient strength of the mounting portion and to smoothly open and close the drawer door.

  Further, even when 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 the portion connected via the bent portion 241 and the door frame 205. Therefore, the attachment strength between 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. Alternatively, 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 first fixing means 301 or the second fixing means 303 or both the first fixing means 301 and the second fixing means 303 are provided above the attaching portion to fix the container 206. Since the moment is reduced, the mounting portion of the top rail 203 can be protected from damage. That is, in the present embodiment, by providing the drawer door 201 provided with the first fixing means 301 and / or the second fixing means 303, the position serving as a fulcrum of the tensile force can be set upward.

  As described above, the first fixing means 301 is formed separately from the inner plate 211, and the second fixing means 303 is formed integrally with the inner plate 211, and in particular, a fixing structure of the front flange portion 206 a of the container 206. The first fixing means 301 is formed of a metallic part separate from the inner plate 211, so that the container 206 is fixed with respect to the movement of the drawer door 201 even if the stored item is put in the container 206. Can be maintained. Moreover, the number of parts can be reduced by integrally molding the second fixing means 303 with the inner plate 211.

  FIG. 6 is a cross-sectional view showing the state in which the containers are arranged between the rail devices of the refrigerator in Embodiment 1 of the present invention from the back side.

  As shown in FIG. 6, the container 206 is a container for storing beverages, frozen foods and the like filled with 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 top rail 203 by arranging the narrow portion 261 between the two top rails 203 and placing the stepped portion 262 on the upper surface of the door frame 205.

  In addition, the narrow portion 261 serving as the bottom surface of the container 206 is disposed above the rail device 202 and is formed to be movable in the front-rear direction.

  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. 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. 7A, the container 206 has a narrow width so that the inwardly-facing step 262 is formed in the depth direction of the container 206 at both ends of the lower part. 7B. However, as shown in FIG. 7B and FIG. 7C, the side surface of the container 206 is substantially straight, and the container 206 is not provided with the stepped portion 262. 202 is supported on the left and right ends of the bottom of the container 206 (see FIG. 7B), or is supported below the left and right ends of the bottom of the container 206 (see FIG. 7C). ) 7 shows the positional relationship between the rail device 202 and the container 206, and the door frame 205 is omitted and not shown.

  In the case of FIG. 7A, the stepped portion 262 provided on both sides of the container 206 has a protrusion formed integrally with the container 206 as shown in FIG. There are a front protrusion 206 b and a rear protrusion 206 c formed on the rear side of the container 206. These protrusions are inserted into the fixing holes 205a and 205b formed in the door frame.

  The fixing hole 205a may be a notch shape, the front protrusion 206b is inserted into the fixing hole 205a for positioning, and the rear protrusion 206c is inserted into the fixing hole 205b formed at the rear of the door frame 205. To do.

  As shown in FIGS. 4 and 8, if the rear protrusion 206 c is inclined downward toward the rear of the door frame 205, it can be prevented from being easily removed from the state of being inserted into the fixing hole 205 b. it can.

  In particular, as described above, the front side is in a state where the front flange 206a of the container 206 is fixed to the drawer door 201, and the rear side is fixed to the drawer door 201 by fixing the rear projection 206c and the door frame 205. 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.

  That is, since the moment applied to the mounting portion is reduced, the mounting portion of the top rail 203 or the mounting portion of the rail fixing portion can be protected from damage. That is, in the present embodiment, the front flange 206a of the container 206 is fixed to the drawer door 201 provided with the first fixing means 301 and / or the second fixing means 303, and the rear protrusion 206c of the container 206 is further connected to the door. By inserting and fixing in the fixing hole 205 b provided in the frame 205, the position serving as a fulcrum of the pulling force can be set behind the drawer door 201.

  Next, as shown in FIG. 9, 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 on the surface, and a screw 400 is provided on the side of the inner box 110. Fixed.

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 a means for securely fixing the rail device 202, the rail device 202 is:
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.

  Specifically, in the case of the freezer compartment 104 formed at a substantially central position in the layout of the refrigerator 100, the rail holding member 270 is arranged on the upper part of the partition wall 108 that partitions the vegetable compartment 103 arranged in the lower part.

  Part A is a perspective view in which the rail device 202 for holding the container 206 of the freezer compartment 104 and the rail holding member 270 are disposed in the inner box 110, and will be described with reference to FIG. Part B is a perspective view in which the rail device 202 for holding the container 206 of the vegetable compartment 103 and the rail holding member 280 are disposed in the inner box 110, and will be described with reference to FIG.

  As shown in FIG. 10, the rail holding member 270 integrally includes a rail mounting portion 223 of the rail device 202 and a rail holding portion 270 a fixed by a screw 400 and an inward fall prevention means 270 b for preventing the rail device 202 from falling inward. The inward fall prevention means 270b formed is a lateral flange portion formed integrally with the lower portion of the rail holding portion 270a disposed in close contact with the inner box 110.

  Specifically, the inward fall prevention means 270b moves away from 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 is directed toward the outer box 112. It is formed by bending to the bottom and further bent downward. Then, since the horizontal flange portion of the inclining prevention means 270b receives the heat insulating material 111 on the surface of the filled heat insulating material 111, and the horizontal flange bites into the heat insulating material, the rail holding portion 270a is moved by the inward falling prevention means 270b. It is fixed, the strength of the rail holding member 270 can be secured, the rail mounting portion 223 can be prevented from falling into the inside of the freezer compartment, and the rail device 202 can be prevented from falling down toward the inside of the freezer. 201 can be opened and closed smoothly.

  Further, the inward fall prevention means 270b of the horizontal flange part may be bent and formed integrally from the lower 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 is possible to prevent the rail mounting portion 223 from falling to the inside of the freezer compartment, and to prevent the rail device 202 from falling in the direction of the inside of the refrigerator.

  In FIG. 10, the partition wall 108 serving as the bottom wall of the freezer compartment 104 has bottom surface step portions 108 a formed on both sides, and the bottom surface step portion 108 a is one step higher than the central portion serving as the reference surface of the partition wall 108 in the depth direction. It is formed toward.

  A rail device 202 is disposed on the bottom step 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.

The rail attachment portion 223 is fixed by a metal rail holding member 270 and a screw 400 with the side surface step portion 110a interposed therebetween.

  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 full width of the container 206 in the freezer compartment 104 can be suppressed. The dimensions can be increased and the invalid 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.

  Further, since the bottom surface step portion 108a is provided, the rail device 202 does not come into contact with the dew condensation water even when the dew condensation 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.

  A door frame 205 fixed with screws is formed on the upper surface of the top rail 203 of the rail device 202, and a stepped portion 262 of the container 206 is placed on the upper surface of the door frame 205.

  Moreover, as shown in FIG. 11, the rail holding member 280 of the vegetable compartment 103 formed in the lowermost part is disposed in the heat insulating material 111. Of the rail holding member 280, a substantially L-shaped vertical flange portion and a horizontal flange portion, The rail holding portion 280a formed in the above is in close contact with the side surface and bottom surface portion of the inner box 110, is integrally formed with the horizontal flange portion that becomes the bottom surface portion of the rail holding portion 280a, and is downward in the direction away from the inner box 110. An inward fall prevention means 280b formed as a lower flange portion is formed integrally with the rail holding portion 280a.

  The lateral flange provided on the rail holding member 280 of the vegetable compartment 103 formed at the lowermost part is wider than the lateral flange provided on the rail holding member 270 of the upper freezing compartment 104.

  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 in the vegetable compartment 103 is directed toward the inside of the cabinet. Can be prevented.

  In FIG. 11, the bottom wall 401 of the vegetable compartment 103 is formed with a bottom step 401 a on both sides, and the bottom step 401 a is one step higher than the central portion serving as a reference surface of the bottom wall 401, toward the depth direction. Is formed.

  A rail device 202 is disposed on the bottom surface step 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 with 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 full width of the container 206 in the vegetable compartment 103. The dimensions can be increased and the invalid 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. Moreover, since the wall thickness of the bottom face wall 401 becomes large at the bottom step portion 401a, heat insulation can be secured.

  Further, since the bottom surface step 401a is provided, the rail device 202 does not come into contact with the dew condensation water even when the dew condensation water accumulates in the central portion serving as the reference surface of the bottom wall 401. 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.

  In addition, the drawer door 201 of the lowermost vegetable compartment 103 is located below the drawer door 201 of the upper freezer compartment 104, and when the user pulls out the drawer door 201, the drawer of the vegetable compartment 103 at the lowermost position is positioned. The door 201 is located at a position where it is easy to put weight on it, and an external load may be applied in addition to the load of the storage amount, and the rail holding member 280 is prevented from falling down to become a substantially L-shaped rail holding portion 280a and a lower flange portion Since the 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.

  Furthermore, since the horizontal flange provided in the rail holding member 280 of the vegetable compartment 103 is wider than the horizontal flange provided in the rail holding member 270 of the upper freezer compartment 104, The rail device 202 can be kept stronger as a fall prevention.

  In addition, since both the freezer compartment 104 and the vegetable compartment 103 have the side wall thickness 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. The heat insulation 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.

  As described above, the rail device 202 is fixed to the rail holding member 270 and the side wall only by the screw 400, but the rail device 202 of the freezer compartment 104 is placed on the partition wall 108 and is held by the rail mounting portion 223. The member 270 may be fixed with a screw. In this case, since the stress applied to the rail holding member 270 can be reduced, the rail device 202 can be prevented from falling down.

  Similarly, the rail holding member 280 that holds the rail device 202 of the vegetable compartment 103 may be placed on the corner portion of the bottom of the inner box forming the space of the vegetable compartment and fixed with screws, and the rail holding member 280 is applied. Since the stress can be reduced, the rail device 202 can be prevented from falling down.

  FIG. 12 is a perspective view of the rail holding member 280. A plurality of hole portions 290 are formed in the rail holding member 280, and the filled heat insulating material 111 enters the hole portion 290 and adheres to the inner box 110, thereby bringing the rail holding member 280 into close contact with the inner box 110. Can be fixed.

  The hole portion 290 is formed in the rail holding portion 280a so that the rail holding member is firmly fixed to the heat insulating material 111, and can be firmly maintained in the inner box. It is possible to smoothly open and close the door. The hole 290 is also provided in the rail holding member 270 in the same manner as described above, and has the same effect.

  In the embodiment, the refrigerator compartment 102 is at the top, the freezer compartment 104 is at the approximate center, and the vegetable compartment 103 is at the bottom, but the drawer-type freezer compartment 104 is the bottom and the drawer-type vegetable compartment 103 is the freezer compartment. A layout arranged on the upper part of 104 may be used, and the same effect can be obtained.

  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 chamber, and further developed in a unit kitchen equipped with a drawer. Is possible.

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, 401a Bottom Stepped Part 110 Inner Box 110a Side Stepped Part 111 Heat Insulating Material 112 Outer Box 201 Drawer Door 202 Rail Device 203 Top Rail (Moving Rail)
205 Door frame 205a, 205b Fixed hole 206 Container 206b Front projection 206c Rear projection 206a Front flange 207 Packing 211 Inner plate 221 Middle rail (moving rail)
222 Cabinet rail (fixed rail)
223 Rail mounting part 262 Step part 270, 280 Rail holding member 270a, 280a Rail holding part 270b, 280b Inward fall prevention means 290 Hole part 301 First fixing means 303 Second fixing means 304 Peripheral part 400 Screw 401 Bottom wall

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, and a drawer-type storage chamber having an open front surface formed inside the heat insulating box. A drawer door that opens and closes the front opening of the storage chamber, a partition wall that partitions the storage chamber of the heat insulation box, a fixed rail, and a moving rail, and the fixed rail and the moving rail. A rail device is provided that is fixed to the inner box wall in a pre-installed state, connects the drawer door and the heat insulation box in a telescopic manner, and allows the container provided inside the storage chamber to move back and forth. In the refrigerator, the rail device is connected to a lower side in the vertical direction of the drawer door and to both ends in the horizontal direction, and the rail device is one step higher than the central portion serving as a reference surface of the bottom wall and has a bottom wall thickness. toward the depth direction so increases It is placed made the bottom step part on the rail attachment unit is fixed to the side step portion formed recessed into an outer box side than the upper side wall portion of the inner box, to prevent dew condensation and immersion of the rail device A refrigerator characterized by that.   The refrigerator according to claim 1, wherein the rail device is fixed to a rail holding member arranged on the heat insulating material side of the inner box.   The rail holding member is arranged in a plurality of stages in the vertical direction of the refrigerator, and the rail holding member arranged in the lowest stage is different in cross-sectional shape from the rail holding member arranged in the upper stage. Refrigerator.   4. The refrigerator according to claim 3, wherein the rail holding member arranged at the lowermost stage is a substantially L-shaped member formed from a side wall to a bottom wall of the inner box.   The refrigerator according to any one of claims 2 to 4, wherein the rail holding member is integrally formed with an internal fall prevention means for preventing the rail device from falling over. The refrigerator according to any one of claims 2 to 5, wherein the rail holding member is formed with a hole through which the filled heat insulating material is passed.