JP2005345058A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having a drawer device and a drawer that causes less rattling, has high quality level, requires less operating force even when a load is charged, and is easy to use. <P>SOLUTION: A rail member 31 in which a fixed rail 31a, a moving rail 31b, and a bearing 31d are previously incorporated is applied to each of upper and lower storage rooms in different temperature zone, and the fixed rail 31a is fixed to fixing portions 33c of reinforcing members 33b disposed on both-side surfaces of an inner box 20. By making the surface area of the reinforcing member 33b different between the upper and lower storage rooms, the moving rail 31b can be moved smoothly, The operating force of the drawer can be reduced, and heat transfer from the reinforcing member 33b between the upper and lower storage rooms can be suppressed while the mounting strength of the fixed rail 31a is maintained. Therefore, increase in the power consumption can be suppressed in the case having the reinforcing member 33b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with a drawer device, and more particularly to a structure for attaching a drawer rail.

  In recent years, as the size of refrigerators has increased, the amount of storage tends to increase, and in order to increase the amount of storage and improve usability, those equipped with a drawer device have become mainstream (for example, see Patent Document 1). ).

  Hereinafter, a refrigerator provided with the above-described conventional drawer device will be described with reference to the drawings.

  FIG. 6 is a perspective view of a drawer-type door of a conventional refrigerator. FIG. 7 is a cross-sectional view of a main part of a conventional refrigerator drawer device. FIG. 8 is a cross-sectional view of a conventional refrigerator drawer device. The refrigerator drawer device 17 of the prior art includes an openable / closable door 1 on the front surface of the refrigerator main body, a frame 2 having one end fixed to the left and right sides of the door, a connecting frame 16 connecting the rear ends, and a rear end of the frame 2. Mounted on the attached movable roller 3, the frame 2 fixed and attached to the inner box side wall 4, the fixed rail 5 and the fixed roller 6 slidably supporting the movable roller 3, the frame 2, and the connecting frame 16. It is comprised by the case 15 which was made. Further, the frame side surface 9 is a flat surface, and the groove portion 12 of the fixed rail 5 is also a flat surface.

  Then, the movable roller 3 attached to the rear end of the frame 2 fixed in advance to the left and right of the door rear surface of the door 1 is inserted into the groove 12 of the fixed rail 5 attached in advance to the refrigerator main body, and the bottom surface of the frame 2 and the fixed roller are inserted. 6 is assembled so as to slide in contact therewith.

In the above configuration, when the door 1 is opened and closed, the frame 2 having one end fixed to the door 1, the connecting frame 16 connected to the frame 2, the internal case 15 and the movable roller 3 placed thereon are fixed rails. 5 and the fixed roller 6 are allowed to slide in the front-rear direction synchronized with the door 1.
Japanese Utility Model Publication No. 60-27913

  However, in the conventional refrigerator, since the frame 2 fixed in advance on the left and right sides of the door 1 is incorporated in the fixed rail 5 attached in advance to the refrigerator body side, the mounting variation of the frame 2 or the fixed rail 5 and assemblability are reduced. In consideration of the design, a certain amount of clearance is set between the rail and the roller in the built-in state. Due to this clearance, left and right rattling occurs when the door 1 is opened and closed, and there is a problem that the operability is impaired and the quality during operation is not improved.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a refrigerator having a high quality with little backlash and an easy-to-use drawer with a small operating force even when a load is applied.

  In order to solve the above-described conventional problems, the refrigerator of the present invention fixes a rail member in a state in which a fixed rail and a moving rail are previously incorporated to a reinforcing member, and then supports the container on the rail member, The surface area is changed for each of the upper and lower storage chambers.

  As a result, the clearance between the fixed rail and the movable rail can be reduced, and a high-quality drawer with less play can be configured.

  Further, by supporting the space between the fixed rail and the moving rail with the rotation support member, the moving rail can move smoothly even when a load is applied to the container, so that the operation force of the drawer can be reduced.

  Further, since the reinforcing member for restricting the position of the rail member is provided, it is possible to secure the operability of the rail member and improve the assembly reliability.

  In addition, since the surface area of the reinforcing member is changed for each of the upper and lower storage chambers in different temperature zones, the heat transfer from the reinforcing member between the upper and lower storage chambers can be suppressed while maintaining the mounting strength of the fixed rail, so that the reinforcing member is provided. Increase in power consumption can be suppressed.

  The refrigerator of the present invention has a small backlash and can smoothly open and close the drawer even when a load is applied to the container, and can constitute a drawer storage that is high quality and easy to use. Moreover, the increase in power consumption when the reinforcing member which is a position control means is provided can be suppressed.

  The invention according to claim 1 is a heat insulating box body having a front opening made of an inner box, an outer box, and a foam heat insulating material filled between the inner box and the outer box, and the heat insulating box body in a temperature zone. Partition walls that are divided into an upper storage chamber and a lower storage chamber, containers provided in the upper storage chamber and the lower storage chamber, and containers provided in the upper storage chamber and the lower storage chamber, respectively. A rail member that can be moved back and forth, and a position restricting means that restricts a fixed position of the rail member, the rail member is provided on both sides of the container, and the rail member includes a fixed rail and a moving rail. The fixed rail and the moving rail are supported by a rotation support member, respectively, and the fixed rail and the moving rail are fixed in advance in a state in which the fixed rail and the moving rail are assembled in advance, and then the container is fixed to the rail member. In The position regulating means is a reinforcing member, and the fixed rails of the rail members on the upper, lower, left and right sides are fixed to a fixing portion provided on the reinforcing member, and the surface area of the reinforcing member is the upper storage chamber side. It is different on the lower storage room side, and the clearance between the fixed rail and the moving rail can be reduced by fixing the rail member in a state where the fixed rail and the moving rail are previously assembled to the heat insulating box. A high-quality drawer with a small amount can be configured. Also, by supporting the space between the fixed rail and the moving rail with a rotation support member, even when a load is applied to the container, the moving rail can move smoothly, reducing the operating force of the drawer and improving usability. Can be measured.

  Further, since the reinforcing member for restricting the position of the rail member is provided, it is possible to secure the operability of the rail member and improve the assembly reliability.

  In addition, since the fixed rails of the plurality of rail members are fixed to one reinforcing member, the cost can be reduced by reducing the number of parts.

  In addition, since the surface area of the reinforcing member is changed for each of the upper and lower storage chambers, heat transfer from the reinforcing member between the upper and lower storage chambers can be suppressed while maintaining the mounting strength of the fixed rail, so that the power consumption when the reinforcing member is provided Can be suppressed.

  The invention according to claim 2 is the invention according to claim 1, wherein a hole is provided in the reinforcing member, and the opening area of the hole on the side of the storage chamber having the lower temperature zone of the upper storage chamber and the lower storage chamber is provided. The heat transfer from the reinforcing member between the upper and lower storage chambers is further suppressed by providing a hole in the reinforcing member, preventing condensation on the high temperature storage room side and heat leakage. The increase in power consumption due to can be suppressed. Moreover, since the opening area of the hole on the side of the storage room having the lower temperature zone is made larger than the other, heat transfer from the storage room having the lower temperature zone can be suppressed, so that an increase in power consumption can be suppressed.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the width of the connecting portion for connecting the fixed portion of the fixed rail provided on the reinforcing member is narrower than that of the fixed portion. By reducing the surface area of the connection part regardless of the fixing strength, heat transfer from the reinforcing members between the upper and lower storage rooms is further suppressed, preventing condensation on the high temperature storage room side and increasing power consumption due to heat leaks. Can be suppressed.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the reinforcing member on the side of the storage chamber at least in the lower temperature zone of the upper storage chamber and the lower storage chamber is provided. An inner box that is provided with a temperature compensation heater in the fixed portion, and that faces at least the reinforcing member in the storage chamber by heating the fixed portion on the lower storage chamber side with the temperature compensation heater. Therefore, it is possible to prevent frost formation and condensation on both side surfaces of the rail and the rail member, so that reliability during use of the refrigerator can be ensured.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the reinforcing member is not exposed in the storage chamber, and the reinforcing member is arranged in the storage chamber. Compared to the above, it is possible to suppress the reduction of the storage internal volume.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the reinforcing member is embedded in the foam insulation of the heat insulation box, and is embedded in the foam insulation. Thus, it is possible to prevent dew condensation and frost formation on the reinforcing member during use of the refrigerator, and further, the corrosion resistance of the reinforcing member can be improved because it does not come into contact with air.

The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the reinforcing member has a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. By forming the reinforcing member with a material having a small linear expansion coefficient, it is possible to reduce the influence on the operability due to the shrinking of the reinforcing member during the cooling operation of the refrigerator, thereby improving the operation reliability of the rail member Can do.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the reinforcing member has a thermal conductivity of 0.1 to 0.2 W / m · K, and is reinforced. By forming the member with a material with low thermal conductivity, heat transfer from the reinforcing member is suppressed, especially when the temperature zones of multiple storage chambers are different, preventing condensation on the storage chamber side where the temperature zone is high, and heat leakage The increase in power consumption due to can be suppressed.

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

(Embodiment 1)
1 is a cross-sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a schematic assembly view of the refrigerator of the same embodiment, and FIG. FIG. 5 is an exploded view of the rail member of the refrigerator of the embodiment, and FIG. 5 is a cross-sectional view of the rail member of the refrigerator of the embodiment.

  1 to FIG. 5, a heat insulating box 19 of a refrigerator 18 is filled with a foam heat insulating material 22 between an inner box 20 and an outer box 21, has a front opening 19a, and partition walls 23, 23a. , 26 form a refrigerator compartment 24, a switching chamber 25, a vegetable compartment 27, and a freezing compartment 28 from above.

  Moreover, the both sides | surfaces of the partition wall 26 have the opening part 26a, and the partition wall 26 is filled with the foam heat insulating material 22 similarly to the heat insulation box 19. FIG.

  In addition, the vegetable compartment 27 arranged at the upper part of the partition wall 26 has a cooling temperature of about 5 ° C., and the freezer compartment 28 arranged at the lower part has a cooling temperature of about −20 ° C. Is set to

  The vegetable compartment 27 and the freezer compartment 28 are respectively closed at the front opening 22a by the vegetable compartment door 29 and the freezer compartment door 30, and the vegetable compartment 27, the vegetable compartment door 29, the freezer compartment 28, and the freezer compartment door 30 are respectively By being connected by the rail member 31, it can be drawn and slid in the front-rear direction.

  The rail member 31 includes a fixed rail 31a, a movable rail 31b, an intermediate traveling rail 31c provided between the fixed rail 31a and the movable rail 31b, and an engagement between the intermediate traveling rail 31c, the fixed rail 31a, and the movable rail 31b. The fixed rail 31a is fixed to both side walls of the inner box 20 with the fixed rail 31a, the moving rail 31b, the intermediate running rail 31c, and the bearing 31d pre-installed. Then, the respective storage chambers and the storage chamber doors are connected by fixing the moving rails 31b to the respective storage chamber doors.

  Although not shown here, the rail member 31 may be disposed on the partition wall 26.

  In addition, the rail member 31 which consists of the fixed rail 31a, the moving rail 31b, and the intermediate | middle traveling rail 31c arrange | positioned via the bearing 31d between the fixed rail 31a and the moving rail 31b is integrated beforehand, The clearance between the rails can be set to a minimum.

  Furthermore, the left and right rail members 31 fixed to the both side wall surfaces of the inner box 20 have a symmetrical shape, and exhibit better slidability by providing both left and right.

  The container 32 of each storage chamber is supported by the moving rail 31b of the rail member 31 after the rail member 31 is fixed to the inner box 20, and is moved back and forth together with the moving rail 31b in synchronization with pulling out each storage chamber door in the front-rear direction. Further, the container 32 is detachable upward when each storage chamber door is fully opened.

  The fixed rails 31a of the pair of left and right rail members 31 are restricted in their fixed positions via the inner box 20 by the reinforcing members 33b which are position restricting means.

  Since the reinforcing member 33b is disposed on the side of the inner box 20 that is filled with the foam heat insulating material 22, the reinforcing member 33b has a structure that is not exposed to each storage chamber.

  In addition, both ends of the reinforcing member 33b reach the vicinity of the center in the vertical direction of the vegetable compartment 27 and the freezing compartment 28, and the fixed rails 31a of the left and right rail members 31 in each storage chamber are fixed to the fixing portions 33c of the reinforcing member 33b. At least the fixing portion 33c of the reinforcing member 33b is in contact with the surface of the inner box 20 on the side filled with the foam heat insulating material 22.

  Moreover, the fixing | fixed part 33c facing the upper and lower store rooms provided on the same side surface is connected by the connection part 33d, and the width | variety (depth) of the connection part 33d is narrower than the fixing | fixed part 33c.

  Further, the connecting portion is provided with holes 33e at positions facing the upper and lower storage chambers, and the opening area of the hole 33e on the freezer compartment 28 side having a low temperature zone is made larger than that on the vegetable compartment 27 side. The surface area is formed to be smaller on the freezer compartment 28 side.

  When the reinforcing member 33b becomes large, the same effect as in the case where the reinforcing member 33b is integrated can be obtained by dividing the reinforcing member 33b into a plurality of front and rear parts, providing the fixing portion 33c, and providing the hole 33e as necessary.

  Further, at least the left and right fixing portions 33c on the freezer compartment 28 side are each provided with a temperature compensating heater 34 on the surface of the foam heat insulating material 22 side.

The reinforcing member 33b is preferably formed of a material having a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. Moreover, it is desirable to form with the material whose heat conductivity is 0.1-0.2W / m * K.

  The bearing 31d may be a rotation support member, and for example, a roller or the like may be used.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when each storage room door is pulled out, the moving rail 31b of the rail member 31 and the intermediate traveling rail 31c provided on both sides of each storage room are smoothly slid toward the front side as the rotation support member 31d rotates. Move.

  Accordingly, the container 32 supported by the rail member 31 is also pulled out to the front, and the object to be cooled stored in the container 32 can be taken out and a new object to be cooled can be stored.

  Further, the fixing member 33b of the reinforcing member 33b is heated by the temperature assurance heaters 34 provided on the left and right sides of the freezer compartment 28, so that the reinforcing member 33b and the rail member 31 on the freezer compartment 28 side are in the temperature range of the freezer compartment 28. Is also maintained at a high temperature.

  As described above, according to the present embodiment, the clearance between the fixed rail 31a and the movable rail 31b is fixed by fixing the rail member 31 in which the fixed rail 31a and the movable rail 31b are preliminarily assembled to both side walls of the inner box 20. It can be made small, and a high-quality drawer with little backlash can be configured. In addition, since the variation in mounting can be reduced by reducing the clearance, it is possible to suppress the appearance defect such as the inclination due to the door mounting failure and the non-uniform spacing with other doors. These effects are more effective as the allowance for the rail member 31 is larger. Further, by supporting the fixed rail 31a and the moving rail 31b with a bearing 31d as a rotation support member, the moving rail 31b can move smoothly even when a load is applied to the container 32, so that the operation force of the drawer is reduced. Can improve usability.

  Further, by restricting the mounting position of the fixed rail 31a of the rail member 31 by the reinforcing member 33b, the front and rear, left and right, vertical dimensions or parallelism of the rail member 31 can be maintained as prescribed, and the heat insulating box body 19 by the reinforcing member 33b. Of the inner box 20 with the rail member 31 in which the clearance between the fixed rail 31a and the movable rail 31b is set to be small in advance, by suppressing the dimensional change due to thermal shrinkage or the like during cooling after the foam insulation material 22 is filled. Since the dimensional accuracy between the pair of left and right rail members 31 can be kept high even in the specification of fixing to both side wall surfaces, the operability when the container 32 is pulled out can be enhanced by the reinforcing member 33b as the position restricting means. In addition, it is possible to ensure operation reliability over a long period of time.

  Further, since the fixed rails 31a of the plurality of rail members 31 are fixed to the pair of left and right reinforcing members 33b, the cost can be reduced by reducing the number of parts.

  Further, since the surface area of the reinforcing member 33b is changed for each of the upper and lower storage chambers, the heat transfer from the reinforcing member 33b between the upper and lower storage chambers can be suppressed while maintaining the mounting strength of the fixed rail 31a, so that the reinforcing member 33b is provided. Increase in power consumption can be suppressed.

  Further, by providing a hole 33e in the reinforcing member 33b, heat transfer from the reinforcing member 33b between the upper and lower storage chambers is further suppressed, and condensation on the vegetable room 27 side having a high temperature zone is prevented and power consumption is increased due to heat leakage. Can be suppressed.

  Moreover, since the opening area of the hole 33e on the freezer compartment 28 side having a low temperature zone is made larger than that on the vegetable compartment 27 side having a high temperature zone, heat transfer from the freezer compartment 28 having a lower temperature zone can be suppressed, so that power consumption can be reduced. Increase can be suppressed.

  In addition, the heat transfer amount can be effectively reduced by providing a plurality of holes 33e provided in the reinforcing member 33b to such an extent that the strength can be maintained.

  In addition, since the width (depth) of the connecting portion 33d that connects the fixing portion 33c of the fixed rail 31a provided on the reinforcing member 33b is narrower than the fixing portion 33c, the surface area of the connecting portion 33d that is irrelevant to the fixing strength of the rail member 31. By further reducing the heat transfer from the reinforcing member 33b between the upper and lower storage rooms, it is possible to prevent condensation on the side of the vegetable room 27 having a high temperature zone and to prevent an increase in power consumption due to heat leakage.

  Further, since the temperature compensation heater 34 is provided at the fixing portion 33c of the reinforcing member 33b on the freezer compartment 28 side at least in the low temperature zone, both side surfaces of the inner box 20 facing the reinforcing member 33b inside the freezer compartment 28 and rail members. Since the frost formation of 31 can be prevented, the reliability when using the refrigerator 18 can be ensured.

  Further, since the reinforcing members 33b are not exposed in the respective storage chambers, it is possible to suppress the reduction of the storage volume as compared with the case where the reinforcing members 33b are disposed in the respective storage chambers.

  Further, when the reinforcing member 33b is formed of a metal material, it is possible to prevent injuries due to the edge of the end face, so that safety can be improved, and furthermore, the edge deletion process of the end face can be abolished, so that the cost can be reduced.

  Further, since the reinforcing member 33b is embedded in the foam heat insulating material 22 of the heat insulating box 19, it is possible to prevent condensation and frost formation of the reinforcing member 33b when the refrigerator 18 is used, and the reinforcing member 33b is in contact with air. Therefore, the corrosion resistance of the reinforcing member 33b can be improved, and the rust prevention treatment of the reinforcing member 33b can be reduced, so that the cost can be reduced.

  Further, since the foam heat insulating material 22 is provided around the reinforcing member 33b, the mounting strength of the reinforcing member 33b can be improved, and the reliability of position regulation and the mounting strength of the rail member 31 can be improved.

  When the fixed rail 31a of the rail member 31 is connected in the front-rear direction by a plurality of reinforcing members 33b, particularly when the rail member 31 is used in a large refrigerator, the reinforcing member 33b is divided into a plurality of reinforcing members. Since the size of 33b can be reduced, the cost can be reduced.

Further, the reinforcing member 33b is contracted when the refrigerator 18 is operated by forming the reinforcing member 33b with a material having a low linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. Since the influence on the operability by doing can be reduced, the operation reliability of the rail member 31 can be improved.

  In addition, since the thermal conductivity of the reinforcing member 33b is 0.1 to 0.2 W / m · K, the reinforcing member is formed of a material having a low thermal conductivity, particularly when the temperature zones of the plurality of storage chambers are different. The heat transfer from 33b can be suppressed, so that condensation on the side of the storage room having a high temperature zone can be prevented and an increase in power consumption due to heat leakage can be suppressed.

  In the present embodiment, the rail member 31 and the container 32 are shared by the vegetables 27 and the freezer compartment 28. However, it is more costly to use materials that are made of different materials for each storage compartment depending on the storage configuration used. Reduction and improvement in reliability can be achieved.

The reinforcing member 33b is made of a material having a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. and a thermal conductivity of 0.1 to 0.2 W / m · K. Specifically, regarding the linear expansion coefficient, metals are 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. and resins are 1.0 to 15.0 × 10 ⁻⁵ cm / cm · ° C., The thermal conductivity is 1.0 to 400.0 W / m · K for metals and 0.1 to 0.2 W / m · K for resins.

  Therefore, when the mounting position accuracy of the rail member 31 is required during operation of the refrigerator 18 as the material of the reinforcing member 33b, metals having a low linear expansion coefficient are used to prevent condensation on the storage room side having a high temperature zone. When it is required to suppress the increase in power consumption due to heat leaks, it is preferable to use resins with low thermal conductivity. Moreover, you may integrate and use both with respect to several storage chambers.

  In the present embodiment, the vegetable member 27 and the freezer compartment 28 are described as using the rail member 31, but can be appropriately applied to a storage room provided with a drawer container. For example, you may use for the switching room 25 located in the upper part of the vegetable compartment 26, the ice making room (not shown) attached to the side of the switching room 25, etc.

  Moreover, in this Embodiment, although the reinforcement member 33b demonstrated what fixed each rail member 31 of the vegetable compartment 27 and the freezer compartment 28, reinforcement independent for each of the vegetable compartment 27 and the freezer compartment 28 was carried out. A member may be used. In this case, in a refrigerator in which the vegetable compartment 27 and the freezer compartment 28 are not provided vertically, it is possible to provide an easy-to-use drawer with a small operation force even when a high quality and load with little backlash are applied. In addition, heat transfer from the reinforcing members is further suppressed when the temperature zones of the plurality of storage chambers are different compared to the case where a plurality of rail members are fixed to one reinforcing member, and condensation on the storage chamber side having a high temperature zone is prevented. And increase in power consumption due to heat leakage can be suppressed.

  In addition, you may connect the fixed rail of a rail member with a some reinforcement member. In this case, since the reinforcing member can be reduced in size by dividing the reinforcing member into a plurality of parts, the cost can be reduced and the weight can be reduced.

  As described above, the refrigerator according to the present invention is small in play, can open and close smoothly even when a load is applied to the container, and has a high-quality and easy-to-use drawer storage. It can also be applied to applications such as a cooling storage drawer.

Cross-sectional view of the refrigerator in the first embodiment of the present invention AA sectional view of FIG. Schematic assembly diagram of the refrigerator of the same embodiment An exploded view of the rail member of the refrigerator of the same embodiment Sectional drawing of the rail member of the refrigerator of the embodiment Perspective view of a conventional drawer drawer door Sectional view of the main part of a conventional refrigerator drawer device Sectional view of a conventional refrigerator drawer device

Explanation of symbols

18 Refrigerator 19 Heat insulation box 19a Front opening 20 Inner box 21 Outer box 22 Foam insulation 26 Partition wall 27 Vegetable room 28 Freezer room 31 Rail member 31a Fixed rail 31b Moving rail 31d Bearing 32 Container 33b Reinforcement member 33c Fixed part 33d Connection Part 33e Hole 34 Temperature compensation heater

Claims (8)

  An inner box, an outer box, a heat insulating box having a front opening made of a foam heat insulating material filled between the inner box and the outer box, and an upper storage room and a lower storage room having different temperature zones for the heat insulating box. A partition wall, a container provided in each of the upper storage chamber and the lower storage chamber, and a rail member provided in each of the upper storage chamber and the lower storage chamber and capable of moving the container back and forth. And a position restricting means for restricting the fixed position of the rail member, the rail member is provided on both sides of the container, and the rail member has a fixed rail and a moving rail, and the fixed rail and the moving rail Each of which is supported by a rotation support member and the fixed rail and the moving rail are assembled in advance, and the fixed rail is fixed to the position restricting means, and then the container is supported by the rail member and the position is fixed. The restricting means is a reinforcing member, and the fixed rails of the rail members on the upper, lower, left and right sides are fixed to a fixing portion provided on the reinforcing member, and the surface area of the reinforcing member is determined between the upper storage chamber side and the lower storage chamber side. A refrigerator characterized by being different.   The hole of the reinforcing member is provided, and the opening area of the hole in the lower storage chamber side of the upper storage chamber and the lower storage chamber is made larger than the other. refrigerator.   The refrigerator according to claim 1 or 2, wherein a width of a connecting portion for connecting a fixing portion of a fixing rail provided on the reinforcing member is narrower than that of the fixing portion.   4. The temperature compensation heater is provided at a fixing portion of the reinforcing member on the side of the lower storage chamber of the upper storage chamber and the lower storage chamber. 5. Refrigerator.   The refrigerator according to any one of claims 1 to 4, wherein the reinforcing member is not exposed in the storage chamber.   The refrigerator according to any one of claims 1 to 5, wherein the reinforcing member is embedded in the foam heat insulating material of the heat insulating box. The refrigerator according to claim 1, wherein the reinforcing member has a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C.   The refrigerator according to any one of claims 1 to 7, wherein the reinforcing member has a thermal conductivity of 0.1 to 0.2 W / m · K.

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