JP2005300036A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator provided with a drawer device which is of high quality with less rattling, and is highly usable with a small force required to operate even when load is applied. <P>SOLUTION: A rail member 31 has fixed rails 31a, moving rails 31b, and a plurality of bearings 31d as rotation supporting members for supporting the engagement between the fixed rails 31a and moving rails 31b and the fixed rails 31a and moving rails 31b. The fixed rails 31a are fixed to an outer box 21 with the fixed rails 31a, moving rails 31b and bearings 31d assembled together in advance, and the moving rails 31b are fixed to respective storage chamber doors, so that the moving rails 31b can be moved smoothly and that the force required to operate the drawer can be reduced. Thus, the usability of the refrigerator can be improved. <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.

  And the movable roller 3 attached to the rear end of the frame 2 fixed in advance on the left and right sides of the door rear surface of the door 1 is inserted into the groove portion 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 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 the 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.

  In addition, since the frame 2, the movable roller 3, the fixed rail 5, the fixed roller 6, and the connecting frame 12 are provided on both side surfaces of the internal case 15 by setting the clearance between the rail and the roller to some extent, the internal case The width dimension of 15 could not be increased, and the storage amount was reduced.

  Moreover, since the length of the rail is limited to approximately the depth dimension or less in the warehouse by arranging the rail in the warehouse, there is a problem that the rail withdrawal allowance cannot be increased.

  The present invention solves the above-described conventional problems, has little backlash, has high quality and low operating force even when a load is applied, has a drawer mechanism with a large drawer allowance and a container with a large amount of storage, and is easy to use. The object is to provide a refrigerator.

  In order to solve the above-described conventional problems, the refrigerator of the present invention is such that a rail member in which a fixed rail and a moving rail are incorporated in advance is fixed to the outer box, and then the container is supported by the container support member. .

  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.

  In addition, since the rail member is fixed to the outer box, the width of the container can be increased, and the storage capacity of the container can be improved, so that the usability can be improved.

  Moreover, since the clearance between the fixed rail and the moving rail is small, it is possible to suppress an increase in the width of the refrigerator body when the rail member is disposed in the outer box.

  In addition, because it is not affected by the temperature environment in the storage chamber, it is easy to use the same specification rail member even when the rail member is applied to multiple storage chambers. It is possible to improve the performance.

  Furthermore, since the length of the rail member can be set regardless of the depth dimension in the cabinet, it can be easily pulled out to the inner part of the container, and the convenience of the refrigerator can be improved.

  The refrigerator of the present invention is small in play, and can open and close the drawer smoothly even when a load is applied to the container, and can constitute a drawer storage that is high quality and has a large amount of storage and is easy to use.

  The invention according to claim 1 is a heat insulating box 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 an inside of the heat insulating box. A container, a container support member provided inside the heat insulation box and supporting the container, a rail member provided outside the storage chamber, and the container support member and the rail member. A connecting member that enables the container to move back and forth, the rail members are provided on both sides of the container, the rail member has a fixed rail and a moving rail, and the fixed rail and the moving rail are respectively The fixed rail is fixed to the outer box in a state in which the fixed rail and the moving rail are preliminarily incorporated, and the connecting member is fixed to the moving rail, and the container supporting member is fixed to the connecting member. Fixed The container is supported by the container support member, and by applying a rail member in which the fixed rail and the movable rail are preliminarily incorporated, the clearance between the fixed rail and the movable rail can be reduced. 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 rail member is fixed to the outer box, the width of the container can be increased, and the storage capacity of the container can be improved, so that the usability can be further improved.

  In addition, since the rail member is provided outside the heat insulating box, it is not affected by the temperature environment in the storage chamber, so even when the rail member is applied to a plurality of storage chambers, it is easy to share the rail member of the same specification. Therefore, it is possible to reduce costs and improve assembly workability by unifying the parts used.

  Moreover, since the clearance between the fixed rail and the moving rail is small, it is possible to suppress an increase in the width of the refrigerator body when the rail member is disposed in the outer box.

  In addition, because it is not affected by the temperature environment in the storage chamber, it is easy to use the same specification rail member even when the rail member is applied to multiple storage chambers. It is possible to improve the performance.

  Furthermore, since the length of the rail member can be increased as compared with the case where the rail member is provided inside the heat insulation box, it is possible to improve the pull-out allowance of the rail member and improve the usability of the refrigerator. .

  According to a second aspect of the present invention, in the first aspect of the present invention, the connecting member is a door that can be opened and closed forward and backward by a rail member and closes the front opening of the heat insulating box when closed. By combining the with the door, the cost can be reduced by reducing the number of parts.

  The invention according to claim 3 is the invention according to claim 1 or 2, further comprising an intermediate traveling rail between the fixed rail and the moving rail of the rail member, the intermediate traveling rail, the fixed rail, and the moving rail, Is supported by a rotation support member, and the rotation support member can slide the moving rail back and forth, and by providing an intermediate travel rail, it is possible to further improve the pull-out allowance of the rail member. Since it can be pulled out to the back of the container and can be looked up to the back of the container, it is easy to prevent loss due to forgetting to use the container contents or to attach and detach the container to the rail member. Usability can be improved. Further, by providing the intermediate traveling rail, the clearance between the fixed rail and the moving rail of the rail member can be set to the minimum.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the outer box is provided with a positioning pin for the fixed rail of the rail member, and the fixed rail corresponds to the position of the positioning pin. A positioning hole provided in an outer box, provided with a hole or a concave portion, and after positioning by inserting the positioning pin into the hole or concave portion of the stationary rail, and fixing the stationary rail to the frame body The reliability of the assembly work can be improved and simplified by fixing the fixed rail to the outer box after alignment using holes or recesses provided in the pin and the fixed rail.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the positioning pin is separated from the outer box, and the positioning pin is separated from the outer box. As a result, the outer box can be easily molded, and the cost can be reduced.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the rail member is applied to a plurality of storage chambers, and the rail member that is easy to use is added to the plurality of storage chambers. By applying, the convenience of the refrigerator can be further improved.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the outer box is provided with a cover that covers the rail member at least when the door is closed, and the rail member is covered with the cover. As a result, the appearance quality can be improved.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the outer box has a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. Because the outer box is made of a material with a low linear expansion coefficient, the influence on the operability due to the shrinkage of the outer box under the influence of the temperature of the refrigerator installation environment can be reduced, so the operation reliability of the rail member Can be improved.

  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 perspective view of essential parts of the refrigerator of the same embodiment, and FIG. FIG. 5 is an exploded view of the rail member of the refrigerator according to the embodiment, and FIG. 5 is a cross-sectional view of the rail member of the refrigerator according to 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 By connecting with the rail member 31 fixed to the both sides of each storage chamber of the flat outer box outer surface 21a which is the surface opposite to the side filled with the foam heat insulating material 22 of the outer box 21, respectively, in the front-rear direction. The drawer can slide.

  The fixing position of the rail member 31 of the outer box 21 is provided with positioning pins 32 for aligning the outer box 21 and the rail member 31 before fixing the rail member 31 to the outer box 21.

  The positioning pin 32 is separate from the outer box 21 and penetrates the outer box hole 21c provided in the outer box 21 from the inner side 21b of the outer box 21 on the side filled with the foam insulation 22 of the outer box 21. It has a substantially rod shape that protrudes about 5 to 10 mm further than 21a.

  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. A plurality of bearings 31d, which are rotation support members that support the shaft, and a hole 31e provided at a position corresponding to the positioning pin 32 of the fixed rail 31a. The fixed rail 31a, the moving rail 31b, the intermediate traveling rail 31c, and the bearing 31d After the positioning pins 32 are inserted into the holes 31e and aligned in a state in which the positioning rails 32 are pre-assembled, the fixed rails 31a are fixed to the outer surface 21a of the outer box, and the movable rails 31b are fixed to the respective storage chamber doors. And the storage room door.

  In addition, the rail member 31 which has 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 outer surface 21a of the outer box have a symmetrical shape, and exhibit better sliding performance by providing both left and right.

  The outer box 21 is provided with a cover 33 that covers most of the rail member 31 and the positioning pin 32 at least when each storage chamber door is closed.

  The cover 33 has a full-surface opening, and is fixed to the outer box 21 from the outer box outer surface 21a side after the rail member 31 is fixed, and the left and right surfaces are more convex than the outer box 21a.

  Each storage room door is sized to cover the rail member 31 and the cover 33 when the refrigerator 18 is viewed from the front.

  In addition, each storage chamber door connects a moving rail 31b of the left and right rail members 31 and a container support member 35 that supports a container 34 provided in each storage chamber.

  The container 34 connects each storage chamber door and the outer box 21 through the rail member 31, and supports the container support member 35 after fixing the container support member 35 to each storage chamber door.

  Therefore, the container 34 moves in the front-rear direction together with the moving rail 31b and the container support member 35 in synchronism with pulling out each storage chamber door in the front-rear direction, and the container 34 is attached and detached in the upward direction when each storage chamber door is at least fully opened. It is free.

  The container support members 35 are respectively provided on both sides of the container 34 in each storage chamber, and have a bar shape with a substantially rectangular cross section. One end of the container support member 35 is fixed to each storage chamber door, and the other reaches the vicinity of the inner surface of the container 34.

The outer box 21 is preferably formed of a material having a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C.

  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.

  Along with this, the container 34 supported by the container support member 35 is also pulled forward, and the object to be cooled stored in the container 34 can be taken out and a new object to be cooled can be stored.

  As described above, in the present embodiment, the clearance between the fixed rail 31a and the movable rail 31b is reduced by fixing the rail member 31 in a state in which the fixed rail 31a and the movable rail 31b are assembled in advance to the outer box 21. It is possible to construct a high-quality drawer with little play. 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 which is a rotation support member, even when a load is applied to the container 34, the moving rail 31b can move smoothly, thereby reducing the operation force of the drawer. Can improve usability.

  Further, since the rail member 31 is fixed to the outer box 21, the width of the container 34 can be increased, and the storage amount of the container 34 can be improved, so that the usability can be further improved.

  Furthermore, since the rail member 31 is provided outside the heat insulating box 19 so as not to be affected by the temperature environment in the storage chamber, the rail member 31 having the same specification can be used even when the rail member 31 is applied to a plurality of storage chambers. It is easy, and cost reduction and assembly workability can be improved by unifying the parts used.

  Moreover, since the clearance between each rail is small, the expansion of the width dimension of the refrigerator 18 when the rail member 31 is arranged in the outer box 21 can be suppressed.

  Furthermore, since the length of the rail member 31 can be increased as compared with the case where the rail member 31 is provided inside the heat insulating box 19, it is possible to improve the drawer allowance of the rail member 31, and the convenience of the refrigerator 18 is improved. Can be improved.

  In addition, the storage chamber door is also used as a connecting member for connecting the moving rail 31b of the left and right rail members 31 and the container support member 35 for supporting the container 34 provided in each storage chamber, thereby reducing the cost by reducing the number of parts. Can be achieved.

  Further, by providing the intermediate traveling rail 31c, the pulling allowance of the moving rail 31b of the rail member 31 can be increased, so that it can be pulled out to the back of the container 34, and it is possible to overlook the back of the container 34, Loss due to forgetting to use the object to be cooled in the container 34 can be prevented, and the container 34 can be easily attached to and detached from the rail member 31, so that the usability can be improved.

  In particular, when it is desired to pull out the container 34 in each storage room with the depth increased to the near side, the intermediate travel rail 31c is provided, which is effective for the strength and operability of the rail member 31 when being pulled out.

  Further, by using the positioning pin 32 provided in the outer box 21 and the hole 31e provided in the fixed rail 31a, the fixed rail 31a after alignment is fixed to the outer box 21, thereby improving and simplifying the reliability of the assembly work. Can be achieved.

  In this embodiment, the substantially rod-shaped positioning pin 32 and the hole 31e are used for alignment. However, for example, if the positioning pin 32 is formed in a rib shape and the fixed rail 31a can be aligned accordingly, the same thing is used. An effect can be obtained.

  Further, since the positioning pin 32 is separated from the outer box 21, the positioning of the positioning pin 32 from the outer box 21 facilitates the molding of the outer box 21 and can reduce the cost.

  Moreover, since the rail member 31 is applied to a plurality of storage rooms, the usability of the refrigerator 18 can be further improved by applying the user-friendly rail member 31 to the plurality of storage rooms.

Moreover, the fluctuation | variation of the external temperature by the installation environment of the refrigerator 18 by forming with the material with a small linear expansion coefficient which made the linear expansion coefficient of the outer box 21 1.0-3.0 * 10 < ^-6 > cm / cm * degreeC. Accordingly, since the influence on the operability due to the shrinkage of the outer box 21 can be reduced, the operation reliability of the rail member 31 can be improved.

  In the present embodiment, the rail member 31, the container 34, and the container support member 35 are shared by the vegetables 27 and the freezer compartment 28. However, the rail member 31, the container 34, and the container support member 35 are formed in different shapes and materials depending on the storage room. Use of the new one can further improve usability and reliability.

In addition, the outer box 21 is made of a material having a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C. Generally, the metal is 1.0 to 3 for the linear expansion coefficient. The resin is 1.0 to 15.0 × 10 ⁻⁵ cm / cm · ° C. at 0.0 × 10 ⁻⁶ cm / cm · ° C.

  Therefore, as the material of the outer box 21, it is preferable to use a metal having a small linear expansion coefficient because the mounting position accuracy of the rail member 31 is required during operation of the refrigerator 18.

  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.

  In the present embodiment, the rail member 31 is fixed to both sides of each storage chamber of the flat outer case outer surface 21a. However, the rail member 31 may be fixed using the rail member 31 fixing portion of the outer case outer surface 21a as a recess. Alternatively, the rail member 31 may be disposed inside the foam heat insulating material 22 to fix the fixed rail 31a to the inner surface 21b of the outer box.

  In the former case, since the portion where the cover 33 protrudes from the outer surface 21a of the outer box is smaller or can be eliminated compared to the present embodiment, the appearance quality when the refrigerator 18 is viewed from the side is improved, and the refrigerator 18 is installed. The necessary width dimension can be reduced, and the usability can be improved.

  In the latter case, in addition to that, the cover 33 can be eliminated, so that the cost can be reduced.

  In this embodiment, the container support member 35 is used to support the container 34. However, if the container 34 is integrated with each storage chamber door, the container support member 35 can be eliminated, and the cost can be reduced. Since the width of 34 can be increased, the amount of storage can be increased and the usability can be improved.

  Moreover, although the moving rail 31b and the container support member 35 are made into a separate body, if it connects and unites in the vicinity of the fixing | fixed part with each storage chamber door, since the fixing components to a storage chamber door can be reduced from two components to one component. The number of assembly steps can be reduced, resulting in cost reduction.

  Further, a part of both side surfaces of the heat insulation box 19 is notched in the front-rear direction so as not to affect the cooling performance, and the movable rail 31b and the container support member 35 integrated with the notches can be moved back and forth. For example, the connecting portion between the moving rail 31b and the container support member 35 can be provided in a plurality of locations in the front-rear direction without being limited to the vicinity of the fixing portion with each storage chamber, so that the strength reliability of the connecting portion can be improved. it can.

  In the present embodiment, the container 34 is connected to each storage chamber door and the outer box 21 through the rail member 31, and the container support member 35 is fixed to each storage chamber door and then supported by the container support member 35. The container support member 35 fixed to each storage chamber door in advance may be connected to the outer box 21 through the rail member 31.

  In the present embodiment, the rail members 31 are provided on both sides of each storage chamber. However, in the lowermost storage chambers such as the uppermost stage and the freezing chamber 28, the rail members 31 are provided on the upper surface and the lower surface of the outer box 21, respectively. The appearance quality can be improved with both sides of the outer box 21 being flat.

  Further, since the mounting portion of the rail member 31 does not appear directly in the appearance, the surface treatment of the material of the cover 33 and the mounting screw of the rail member 31 can be simplified, and the cost 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. The principal part perspective view of the refrigerator of the 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

DESCRIPTION OF SYMBOLS 18 Refrigerator 19 Heat insulation box 19a Front opening 20 Inner box 21 Outer box 21a Outer box outer surface 21b Outer box inner surface 21c Outer box hole 22 Foam insulation 27 Vegetable room 28 Freezing room 31 Rail member 31a Fixed rail 31b Moving rail 31c Intermediate travel Rail 31d Bearing 31e Hole 32 Positioning pin 33 Cover 34 Container 35 Container support member

Claims (8)

  A heat insulating box 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; a container provided in the heat insulating box; and the heat insulating box. A container supporting member provided inside the body for supporting the container; a rail member provided outside the storage chamber; and the container supporting member and the rail member connected to each other to move the container back and forth. The rail member is provided on both sides of the container, the rail member has a fixed rail and a moving rail, and the fixed rail and the moving rail are each supported by a rotation support member and the fixed rail. The fixed rail is fixed to the outer box in a state in which the container and the moving rail are assembled in advance, the connecting member is fixed to the moving rail, and the container supporting member is fixed to the connecting member, and then the container is moved to the container. Branch Refrigerator, characterized in that the supporting members.   The refrigerator according to claim 1, wherein the connecting member is a door that can be opened and closed forward and backward by a rail member and closes the front opening of the heat insulating box when closed.   An intermediate traveling rail is provided between the fixed rail and the moving rail of the rail member, and the engagement between the intermediate traveling rail, the fixed rail and the moving rail is supported by a rotation support member, and the movement rail is supported by the rotation support member. The refrigerator according to claim 1 or 2, wherein the refrigerator is slidable back and forth.   The outer box is provided with a positioning pin for the fixed rail of the rail member. The fixed rail is provided with a hole or a recess corresponding to the position of the positioning pin, and the positioning pin is inserted into the hole or the recessed portion of the fixed rail for alignment. The refrigerator according to any one of claims 1 to 3, wherein the fixed rail is fixed to the frame after performing the operation.   The refrigerator according to any one of claims 1 to 4, wherein the positioning pin is separated from the outer box.   The refrigerator according to any one of claims 1 to 5, wherein the rail member is applied to a plurality of storage rooms.   The refrigerator according to any one of claims 1 to 6, wherein the outer box is provided with a cover that covers the rail member at least when the door is closed. The refrigerator according to claim 1, wherein the outer box has a linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C.

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