JP2006177654A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator having a drawer of high quality and low operation force even when applying a load, reduced in backlash, and convenient in use, as to the refrigerator provided with the drawer unit. <P>SOLUTION: A rail member 31 comprises fixed rails 31a, moving rails 31b, intermediate travel rails 31c provided between the fixed rails 31a and the moving rails 31b, and a plurality of bearings 31d of rotation support members, the fixed rails 31a are fixed to reinforcement members 33 provided in both side wall faces of an inner box 20 under the condition that the fixed rails 31a, the moving rails 31b, the intermediate travel rails 31c and the bearings 31d are assembled preliminarily, positioning pins 34 for positioning the fixed rails 31a are provided in the reinforcement members 33, the drawer of high quality reduced in the backlash is thereby constituted, and workability and attaching strength are thereby enhanced also when attached to the inner box wall faces of the fixed rails. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with a drawer device, and more particularly to a configuration 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. 23 is a perspective view of a drawer door of a conventional refrigerator. FIG. 24 is a sectional view of an essential part of a conventional refrigerator drawer device. FIG. 25 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 for slidingly supporting the movable roller 3, the fixed roller 6, the frame 2, and the connecting frame 16. It is composed of a case 15 in the cabinet. 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 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, when this rattling occurs, for example, when a large load is applied to the drawer-type door, an uneven load is generated on the rail centering on this rattling portion, so there is a concern about the deformation of the rail or the mounting surface due to this uneven load. The

  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 includes an inner box, an outer box, and a heat insulating box having a front opening provided with a heat insulating material filled between the inner box and the outer box. The body comprises a drawer-type storage chamber composed of a container provided inside the heat insulation box and a door provided on the front side of the container, and has a rail member capable of moving the container back and forth, The rail member has a fixed rail provided on the heat insulating box side and a moving rail provided on the door side, and the rail member is attached to the inner wall surface of the inner box and the inner The reinforcing member is fixed and supported by a reinforcing member provided between the box and the outer box, and the reinforcing member is provided with position restricting means capable of positioning with respect to the inner box.

  Accordingly, the reinforcing member can be easily positioned with respect to the inner box, and the rail member is provided with high accuracy with the rail member provided with the reinforcing member arranged with high accuracy by this positioning. Since it can be provided, a high-quality drawer with little backlash can be configured, and the mounting accuracy and mounting strength when mounting the fixed rail to the inner box wall surface can be increased.

  In addition, in order to improve the user's convenience, it is a refrigerator equipped with a storage room that can be pulled out to the back, even when a large load is applied to the drawer door compared to a refrigerator with a small drawer fee , It suppresses the occurrence of unbalanced load on the rail centering around the rattle and reduces the deformation of the rail and mounting surface due to this unbalanced load, and the drawer door opens without degrading the reliability of the refrigerator Sometimes the top opening of the container can be maximized.

  The refrigerator of the present invention can provide a refrigerator with a high-quality and highly reliable drawer door that has small rattling and can smoothly open and close the drawer even when a load is applied to the container.

  The invention according to claim 1 is the heat insulating box body having a front opening provided with an inner box, an outer box, and a heat insulating material filled between the inner box and the outer box. A drawer-type storage chamber comprising a container provided in the interior of the container and a door provided on the front side of the container, and a rail member that allows the container to move back and forth, the rail member being the heat insulating box A fixed rail provided on the body side and a moving rail provided on the door side, and the rail member is attached to a wall surface inside the warehouse of the inner box and between the inner box and the outer box The reinforcing member is fixedly supported by a reinforcing member provided in between, and the reinforcing member is provided with a position regulating means capable of positioning with respect to the inner box.

  Accordingly, the reinforcing member can be easily positioned with respect to the inner box, and the rail member is provided with high accuracy with the rail member provided with the reinforcing member arranged with high accuracy by this positioning. Since it can be provided, a high-quality drawer with little backlash can be configured, and the mounting accuracy and mounting strength when mounting the fixed rail to the inner box wall surface can be increased.

  In addition, in order to improve the user's convenience, it is a refrigerator equipped with a storage room that can be pulled out to the back, even when a large load is applied to the drawer door compared to a refrigerator with a small drawer fee By providing a high-precision rail member in which the fixed rail and moving rail are pre-installed, rattling is almost eliminated and the occurrence of uneven load is suppressed, and deformation of the rail and mounting surface due to this uneven load is reduced. The upper surface opening of the container can be maximized when the drawer door is opened without reducing the reliability of the refrigerator.

  According to a second aspect of the present invention, in the first aspect of the present invention, the reinforcing member is disposed on the foam heat insulating material side in contact with the inner box, and the position regulating means provided in the reinforcing member penetrates the inner box. It is exposed to the storage chamber side, and can reduce the storage volume as compared with the case where the reinforcing member is arranged inside the storage chamber, and further improves the corrosion resistance of the reinforcing member because it does not come into contact with air. Can do.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the position regulating means provided in the reinforcing member positions the reinforcing member with respect to the inner box and a fixed rail to the inner box. It positions with respect to it.

  As a result, the position restricting means can position the rail member relative to the inner box at the same time as positioning the reinforcing member with respect to the inner box, so that the relative positional relationship between the reinforcing member, the inner box and the rail member is accurately arranged. be able to.

  In addition, when providing a high-precision rail member in which the fixed rail and the moving rail are assembled in advance, even when the rail member is provided after filling with a foamed insulating material that forms the wall surface of the heat insulating box, the reinforcing member and the inner box are provided. On the other hand, high mounting accuracy can be ensured, and even when a high-precision rail member that requires high mounting accuracy is required due to the small clearance of the sliding part, the mounting accuracy when mounting the fixed rail to the inner box wall surface and Mounting strength can be increased.

  According to a fourth aspect of the present invention, in addition to the invention according to any one of the first to third aspects, the position regulating means provided in the reinforcing member is integrally formed with the reinforcing member.

  Accordingly, it is possible to provide a refrigerator that saves resources by reducing the number of parts.

  Further, the strength of the position restricting unit with respect to the reinforcing member can be improved, and deformation of the position restricting unit with respect to the reinforcing member and blurring of the relative position can be suppressed, so that the accuracy in positioning can be further improved.

  The invention according to claim 5 is the invention according to any one of claims 1 to 3, wherein the position regulating means provided in the reinforcing member is formed as a separate part from the reinforcing member. By forming the pins as separate parts, the reinforcing member can be formed more easily than when the reinforcing member and the position restricting means are formed integrally. Moreover, parts can be shared for refrigerators of various capacities and dimensions, and the productivity of the reinforcing member and the position restricting means can be improved.

  The invention according to claim 6 is the invention according to claim 5, in which the position regulating means is molded from resin, and the shape of the positioning pin can be easily changed from the case of molding from metal or the like, Moreover, it can be molded at low cost.

  According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, at least one pair of position regulating means provided in the reinforcing member is provided substantially symmetrically in the left-right direction of the heat insulating box. It is a thing.

  Thus, the rails provided on the left and right sides of the heat insulation box can be provided substantially symmetrically on the left and right sides, and by improving the mounting accuracy of the rails, it is possible to ensure the operability of the rail member and ensure the assembly reliability. it can.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein a plurality of position regulating means provided in the reinforcing member are formed in the depth direction of the heat insulating box. .

  Thereby, the mounting accuracy in the front-rear direction of the rail member can be improved, and the operability of the rail member and the assembly reliability can be ensured.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the rail member mounting surface including the rail member of the inner box forms a step with respect to another portion, and the step Correspondingly, the shape of the reinforcing member has a step.

  Thereby, the strength of the reinforcing member can be further increased due to the complicated shape of the reinforcing member having steps.

  In addition, when the foam insulation is filled between the inner box and the outer box due to this step, the surface area of the reinforcement member in contact with the foam insulation is further increased, thereby further increasing the holding force of the reinforcement member by the foam insulation. That is, the mounting strength of the rail can be further increased.

  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 side sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a schematic assembly diagram of the refrigerator according to the 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 vegetable 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 19a by a vegetable compartment door 29 and a 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. And each storage room and the storage room door are connected by fixing the moving rail 31b to each storage room door.

  A rail member 31 including a fixed rail 31a, a movable rail 31b, and an intermediate traveling rail 31c disposed between the fixed rail 31a and the movable rail 31b via a bearing 31d is incorporated in advance. Compared with the type of rail that the moving rail and the fixed rail described in the above are separate and the moving rail provided on the door side is inserted into the groove of the fixed rail provided on the heat insulation box side later And since the clearance of each sliding part has a highly accurate sliding part which is very small, the clearance between each rail can be set to the 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.

  Further, the fixed positions of the fixed rails 31a of the pair of left and right rail members 31 are restricted through the inner box 20 by the reinforcing members 33 having the positioning pins 34 as position restricting means.

  The positioning pins 34 that are position restricting means provided in the reinforcing member are provided at substantially symmetrical positions in the left-right direction of the heat insulation box, and a plurality of positioning pins 34 are formed in the depth direction of the heat insulation box 19.

  The reinforcing member 33 is disposed on the side of the inner box 20 that is filled with the foam heat insulating material 22, so it is not exposed in each storage chamber, and only the positioning pin 34 penetrates the inner box and the reinforcing member and is exposed to the storage chamber side. It has a structure.

  Further, the positioning pin 34 which is a position restricting means provided in the reinforcing member 33 is formed as a separate part from the reinforcing member 33, the reinforcing member 33 is a metal plate having high strength, and the positioning pin 34 is formed of resin. As a separate part, the tip is disposed in the chamber through the hole 33a provided in the reinforcing member 33 and the hole 20a provided in the inner box 20.

  The positioning pin 34 which is a position regulating means provided in the reinforcing member 33 has two positioning functions such as positioning the reinforcing member 33 with respect to the inner box 20 and positioning the fixed rail 31a with respect to the inner box 20. Is.

  In addition, it is desirable to provide a plurality of holes 33 a provided in the reinforcing member 33 and holes 20 a provided in the inner box 20 in the sliding direction (front-rear direction) of the rail member 31.

  Further, both ends of the reinforcing member 33 reach the vicinity of the center in the vertical direction of the vegetable compartment 27 and the freezing compartment 28, respectively, and the fixed rails 31a of the left and right rail members 31 in each storage chamber are fixed to the reinforcing member 33, and at least reinforced The member 33 is in contact with the surface of the inner box 23 on the side filled with the foam heat insulating material 22.

The reinforcing member 33 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 0.1-0.2 W / 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, a reinforcing member is provided on the inner box 20 side between the inner box 20 and the outer box 21, and at this time, the reinforcing member 33 with respect to the inner box 20 is positioned by a positioning pin 34 which is a position regulating means provided in the reinforcing member 33. Perform positioning. At this time, the inner box 20 is provided with a hole 20a corresponding to the positioning pin 34, and the positioning pin 34 passes through the hole 20a and the tip thereof is disposed in the cabinet. By filling the foam heat insulating material 22 between the inner box 20 and the outer box 21 with the reinforcing member 33 provided in the inner box 20 in this manner, the reinforcing member 33 and the positioning are positioned by the holding force of the foam heat insulating material 22. The pin 34 is fixed to the inner box side.

  Next, the rail member 31 is attached to the heat insulation box 19 filled with the foam heat insulating material 22.

  At this time, since the positioning pin 34 provided in the reinforcing member passes through the hole 20a and the tip protrudes into the warehouse, the positioning pin 34 is fitted into the hole 31ab provided in the fixed rail 31a of the rail member 31. After positioning the fixed rail 31a, the fixed rail 31a is fixed to the reinforcing member 33 with screws or the like.

  When the fixed rail 31a is positioned and attached in this way, the rail member 31 including the fixed rail 31a and the moving rail 31b is fixed to the heat insulating box 19 at the same time. This is because the rail member 31 uses a rail in which an intermediate traveling rail 31c disposed in advance via a bearing 31d is interposed between the fixed rail 31a and the moving rail 31b, so that the rail member 31 is integrated. Because of that.

  Thereby, the reinforcing member 33 can be easily positioned with respect to the inner box 20, and the rail member 31 is also provided with high accuracy by providing the rail member 31 with respect to the reinforcing member 33 arranged with high accuracy by this positioning. Since it can be arranged and provided with high strength, a high-quality drawer with little backlash can be configured, and the mounting accuracy and mounting strength when mounting the fixed rail 31a to the inner box wall surface can be increased. Further, the workability of attachment by temporarily supporting the fixed rail 31a is extremely good, and the work of attachment to a portion corresponding to a storage room that is generally not in a good working posture can be easily performed.

  In addition, in order to improve the user's convenience, it is a refrigerator equipped with a storage room that can be pulled out to the back, even when a large load is applied to the drawer door compared to a refrigerator with a small drawer fee By providing a high-precision rail member 31 in which the fixed rail 31a and the movable rail 31b are preliminarily assembled, the occurrence of uneven load is suppressed by eliminating rattling, and the deformation of the rail and the mounting surface due to the uneven load are suppressed. Etc., and the upper surface opening of the container can be maximized when the drawer door is opened without reducing the reliability of the refrigerator.

  Further, the positioning pin 34 which is a position regulating means provided in the reinforcing member 33 has two positioning functions such as positioning the reinforcing member 33 with respect to the inner box 20 and positioning the fixed rail 31a with respect to the inner box 20. Therefore, the relative positional relationship among the reinforcing member 33, the inner box 20, and the rail member 31 can be accurately arranged.

  Further, when providing the rail member 31 with high accuracy in a state in which the fixed rail 31a and the moving rail 31b are incorporated in advance, even when the rail member 31 is provided after filling with the foam heat insulating material 22 that forms the wall surface of the heat insulating box 19, Even when a high-precision rail member that requires high mounting accuracy is required since high mounting accuracy can be ensured with respect to the reinforcing member 33 and the inner box 20 and the clearance of the sliding part is small, the inner box wall surface of the fixed rail The mounting accuracy and mounting strength at the time of mounting to can be increased.

  When a user uses a drawer-type storage room provided with rail members 31 attached in this way, first, when each storage room door is pulled out, the rails 31 of the rail members 31 provided on both sides of each storage room are moved. 31b and the intermediate traveling rail 31c slide smoothly to the near side as the rotation support member 31d rotates.

  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.

  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. 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, the mounting position of the fixed rail 31a of the rail member 31 is regulated by the positioning pin 34 that is fixed to the reinforcing member 33 and penetrates the inner box 20 and exposed to the storage chamber side. The fixed rail 31a and the movable rail can be maintained by maintaining the width dimension or parallelism as prescribed and by suppressing the dimensional change due to thermal contraction or the like during cooling after the foamed heat insulating material 22 of the heat insulating box 19 is filled by the reinforcing member 33. Since the dimensional accuracy between the pair of left and right rail members 31 can be kept high even when the rail member 31 having a small clearance with respect to the rail 31b is fixed in advance to the both side wall surfaces of the inner box 20, the dimensional accuracy between the pair of left and right rail members 31 can be kept high. Can be enhanced by the reinforcing member 33 which is a position restricting means. In addition, it is possible to ensure operation reliability over a long period of time.

  Further, the positioning pin 34 is a separate part molded from resin, and the tip is disposed in the warehouse through the hole 33a provided in the reinforcing member 33 and the hole 20a provided in the inner box 20, so that the reinforcing member, the positioning pin, Since the reinforcing member can be easily molded as compared with the case of integrally molding, the cost can be reduced.

  Further, by providing a plurality of holes 33a provided in the reinforcing member 33 and holes 20a provided in the inner box 20 in the sliding direction (front-rear direction) of the rail member 31, the accuracy of the position regulation of the rail member is increased, and operation reliability is further improved. And assembly workability can be improved.

  In addition, by providing the intermediate traveling rail 31c, it is possible to increase the pull-out allowance of the moving rail 31b of the rail member 31, so that it can be pulled out to the inner part of the container 32, and can be overlooked to the inner part of the container 32, Loss due to forgetting to use the object to be cooled in the container 32 can be prevented, and the container 32 can be easily attached to and detached from the rail member 31, so that the usability can be improved.

  Further, since the reinforcing members 33 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 33 are arranged in the respective storage chambers.

  Further, since the reinforcing member 33 that connects the left and right fixed rails 31a 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 33 when the refrigerator 18 is used. Furthermore, since the reinforcing member 33 does not come into contact with air, the corrosion resistance of the reinforcing member 33 can be improved.

  Moreover, since the partition wall 26 which divides the heat insulation box 19 into the vegetable compartment 27 and the freezer compartment 28 was provided, and the reinforcement member 33 which connects the right and left fixed rail 31a was provided inside the partition wall 26, a plurality of storage spaces are provided. When it has, the reduction of the storage internal volume by arrange | positioning the reinforcement member 33 can be suppressed.

  Moreover, since the vegetable room 27 and the freezing room 28 which adjoined up and down were each provided with the rail member 31, and the fixed rail 31a of each rail member 31 was fixed to the reinforcement member 33 integrally, the operativity of several storage chambers is carried out. It can be increased at the same time. Further, by fixing the fixed rails 31a of the plurality of rail members 31 to one reinforcing member 33, the cost can be reduced by reducing the number of parts.

  Further, when the fixed rails 31a of the pair of left and right rail members 31 are connected in the front-rear direction by a plurality of reinforcing members 33, the reinforcing member 33 is divided into a plurality of parts, particularly when the rail member 31 is used in a large refrigerator. Accordingly, the size of the reinforcing member 33 can be reduced, and the cost can be reduced.

Further, by forming the reinforcing member 33 with a material having a low linear expansion coefficient of 1.0 to 3.0 × 10 ⁻⁶ cm / cm · ° C., the reinforcing member 33 contracts during operation of the refrigerator 18. 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 33 is 0.1 to 0.2 W / m · K, the reinforcing member 33 is formed of a material having a low thermal conductivity, particularly when the temperature zones of the plurality of storage chambers are different. It is possible to suppress heat transfer from 33, prevent condensation on the side of the storage room having a high temperature zone, and suppress an increase in power consumption due to heat leakage.

  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 33 is 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 the operation of the refrigerator 18 as the material of the reinforcing member 33, 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 27, the ice making room (not shown) attached to the side of the switching room 25, etc.

  In this embodiment, the positioning pin 34 which is a position restricting means provided in the reinforcing member 33 is formed as a separate part from the reinforcing member 33. However, the position restricting means provided in the reinforcing member 33 is used. May be formed integrally with the reinforcing member. For example, a part of the reinforcing member 33 formed of a metal steel plate is formed by pressing or the like to form a convex part or an engaging part. By using the position regulating means, the number of parts can be reduced, and a refrigerator that saves resources can be provided.

(Embodiment 2)
6 is a side sectional view of the refrigerator according to Embodiment 2 of the present invention, FIG. 7 is a sectional view taken along line AA of FIG. 6, FIG. 8 is a schematic assembly diagram of the refrigerator of the same embodiment, and FIG. FIG. 10 is an exploded view of the rail member of the refrigerator of the embodiment, and FIG. 10 is a cross-sectional view of the rail member of the refrigerator of the embodiment.

  In the figure, the heat insulating box 219 of the refrigerator 218 is filled with a foam heat insulating material 222 between the inner box 220 and the outer box 221, has a front opening 219 a, and the partition walls 223, 223 a, 226, A refrigerator room 224, a switching room 225, a vegetable room 227, and a vegetable room 228 are formed from above.

  Moreover, the both sides | surfaces of the partition wall 226 have the open part 226a, and the partition wall 226 is filled with the foam heat insulating material 222 similarly to the heat insulation box 219. FIG.

  In addition, the vegetable compartment 227 arranged at the upper part of the partition wall 226 has a cooling temperature of about 5 ° C., and the freezing room 228 arranged at the lower part has a cooling temperature of about −20 ° C. Is set to

  The vegetable compartment 227 and the freezer compartment 228 have their front openings 219a closed by the vegetable compartment door 229 and the freezer compartment door 230, respectively, and the vegetable compartment 227, the vegetable compartment door 229, the freezer compartment 228, and the freezer compartment door 230 respectively. By being connected by the rail member 231, it can be drawn and slid in the front-rear direction.

  The rail member 231 includes a fixed rail 231a, a movable rail 231b, an intermediate traveling rail 231c provided between the fixed rail 231a and the movable rail 231b, and an engagement between the intermediate traveling rail 231c, the fixed rail 231a, and the movable rail 231b. The fixed rail 231a is fixed to both side walls of the inner box 220 in a state in which the fixed rail 231a, the moving rail 231b, the intermediate traveling rail 231c, and the bearing 231d are assembled in advance. Then, each storage room and the storage room door are connected by fixing the moving rail 231b to each storage room door.

  The rail members 231 including the fixed rail 231a and the moving rail 231b, and the intermediate traveling rail 231c disposed via the bearing 231d between the fixed rail 231a and the moving rail 231b are pre-installed. The clearance between the rails can be set to a minimum.

  Furthermore, the left and right rail members 231 fixed to the both side wall surfaces of the inner box 220 have a symmetrical shape and exhibit better slidability by providing both left and right.

  The container 232 of each storage chamber is supported by the moving rail 231b of the rail member 231 after fixing the rail member 231 to the inner box 220, and moves back and forth together with the moving rail 231b in synchronization with pulling out each storage chamber door in the front-rear direction. Further, the container 232 is detachable upward when each storage chamber door is fully opened.

  Further, the fixed positions of the fixed rails 231a of the pair of left and right rail members 231 are restricted via the inner box 220 by the vertical portions 233b of the connecting members 233 having the positioning pins 234 as position restricting means. The vertical portion 233b of the connecting member 233 is disposed on the side of the inner box 220 filled with the foam heat insulating material 222 so that it is not exposed in each storage chamber, and only the positioning pin 234 is the vertical portion of the inner box and the connecting member 233. It has a structure that penetrates through and is exposed to the storage chamber side.

  In addition, the positioning pin 234 is molded as a separate part with resin, and passes through the positioning pin through hole 236 of the inner box 220 from the hole 235 of the vertical portion 233b of the connecting member 233, and the tip of the positioning pin 234 is placed on the storage chamber side. It is exposed.

  A plurality of positioning pins 234 and positioning pin through holes 236 of the inner box 220 are formed in the longitudinal direction of the fixed rail 231a.

  Further, both ends of the vertical portion 233b of the connecting member 233 reach the vicinity of the center in the vertical direction of the vegetable compartment 227 and the freezing compartment 228, respectively, and the fixed rails 231a of the left and right rail members 231 in each storage chamber are perpendicular to the connecting member 233. It is fixed to the portion 233b, and at least the vertical portion 233b of the connecting member 233 is in contact with the surface of the inner box 223 on the side filled with the foam heat insulating material 222.

  Further, the vertical portion 233b of the connecting member 233 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 0.1-0.2 W / m * K.

  The bearing 231d 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 231b of the rail member 231 and the intermediate traveling rail 231c provided on both sides of each storage room slide smoothly toward the front side as the rotation support member 231d rotates. Move.

  Along with this, the container 232 supported by the rail member 231 is also pulled out to the front, so that the object to be cooled stored in the container 232 can be taken out and a new object to be cooled can be stored.

  As described above, in this embodiment, the clearance between the fixed rail 231a and the movable rail 231b is fixed by fixing the rail member 231 in a state in which the fixed rail 231a and the movable rail 231b are assembled in advance to both side walls of the inner box 220. It can be made small, and a high-quality drawer with little backlash can be configured. Further, by supporting the space between the fixed rail 231a and the moving rail 231b with a bearing 231d that is a rotation support member, even when a load is applied to the container 232, the moving rail 231b can move smoothly, thereby reducing the operation force of the drawer. Can improve usability.

  Further, by restricting the mounting position of the fixed rail 231a of the rail member 231 by the positioning pin 234 fixed to the vertical portion 233b of the connecting member 233, the width dimension or parallelism of the pair of left and right rail members 231 can be maintained as prescribed. The clearance between the fixed rail 231a and the moving rail 231b is set to be small by suppressing the dimensional change due to the heat shrinkage at the time of cooling after filling the foam heat insulating material 222 of the heat insulating box 219 by the vertical portion 233b of the connecting member 233. Even when the rail member 231 is pre-assembled and fixed to both side walls of the inner box 220, the dimensional accuracy between the pair of left and right rail members 231 can be kept high, so that the operability when the container 232 is pulled out is a position regulating means. The height can be increased by the vertical portion 233b of the connecting member 233. In addition, it is possible to ensure operation reliability over a long period of time.

  Further, the vertical portion 233b of the connecting member 233 is disposed on the side of the inner box 220 filled with the foam heat insulating material 222, and only the positioning pin 234 passes through the vertical portion of the inner box and the connecting member 233 and is exposed to the storage chamber side. Therefore, the positioning of the fixed rail 231a is facilitated and the assembly workability is improved.

  Further, the positioning pin 234 is a separate component, and the tip of the positioning pin 234 is exposed to the storage chamber side through the positioning pin through hole 236 of the inner box 220 from the hole 235 of the vertical portion 233b of the connecting member 233. The vertical portion 233b of the connecting member 233 can be formed more easily than when the positioning pin 234 is formed integrally with the vertical portion 233b of the member 233.

  Further, since the positioning pin 234 is molded from resin as a separate part, the positioning pin can be formed more easily and at a lower cost than when it is molded from metal or the like. Moreover, heat transfer with the inside of the cabinet can be suppressed.

  Further, since a plurality of positioning pins 234 and positioning pin through holes 236 of the inner box 220 are formed in the longitudinal direction of the fixed rail 231a, it is possible to further improve the operability of the rail member and the assembly reliability. it can.

  Further, by providing the intermediate traveling rail 231c, the pulling allowance of the moving rail 231b of the rail member 231 can be increased, so that it can be pulled out to the inner part of the container 232, and it is possible to overlook the inner part of the container 232, Loss due to forgetting to use the object to be cooled in the container 232 can be prevented, and the container 232 can be easily attached to and detached from the rail member 231, so that the usability can be improved.

  Further, since the vertical portion 233b of the connecting member 233 is not exposed in each storage chamber, a reduction in the storage volume can be suppressed as compared with the case where the vertical portion 233b of the connecting member 233 is disposed in each storage chamber.

  Further, since the vertical portion 233b of the connecting member 233 that connects the left and right fixed rails 231a is embedded in the foamed heat insulating material 222 of the heat insulating box 219, condensation or frost formation of the vertical portion 233b of the connecting member 233 when the refrigerator 218 is used. Further, since the vertical portion 233b of the connecting member 233 does not come into contact with air, the corrosion resistance of the vertical portion 233b of the connecting member 233 can be improved.

  In addition, since the partition wall 226 that partitions the heat insulation box 219 into the vegetable compartment 227 and the freezer compartment 228 is provided, and the vertical portion 233b of the connecting member 233 that connects the left and right fixed rails 231a is provided inside the partition wall 226. When the storage space is provided, it is possible to suppress the reduction of the storage internal volume due to the arrangement of the vertical portion 233b of the connecting member 233.

  In addition, since the vegetable chamber 227 and the freezing chamber 228 adjacent to each other are provided with rail members 231 and the fixed rails 231a of the rail members 231 are fixed integrally with the vertical portion 233b of the connecting member 233, a plurality of storage chambers are provided. The operability can be improved at the same time. Further, by fixing the fixed rails 231a of the plurality of rail members 231 to the vertical portion 233b of one connecting member 233, it is possible to reduce the cost by reducing the number of parts.

  Further, when the fixed rails 231a of the pair of left and right rail members 231 are connected in the front-rear direction by the vertical portions 233b of the plurality of connecting members 233, particularly when the rail members 231 are used in a large refrigerator, Since the vertical portion 233b of the connecting member 233 can be reduced in size by dividing the vertical portion 233b into a plurality of parts, the cost can be reduced.

  Further, by forming the linear expansion coefficient of the vertical portion 233b of the connecting member 233 with a material having a low linear expansion coefficient of 1.0 to 3.0 × 10 −6 cm / cm · ° C., the connecting member is operated when the refrigerator 218 is operated. Since the influence on the operability due to the contraction of the vertical portion 233b of 233 can be reduced, the operation reliability of the rail member 231 can be improved.

  In addition, since the thermal conductivity of the vertical portion 233b of the connecting member 233 is 0.1 to 0.2 W / m · K, the temperature range of the plurality of storage chambers is particularly different by forming the material with a low thermal conductivity. In this case, heat transfer from the vertical portion 33b of the connecting member 33 can be suppressed, and condensation on the storage room side having a high temperature zone can be prevented and an increase in power consumption due to heat leakage can be suppressed.

  In this embodiment, the rail member 231 and the container 232 are shared by the vegetable 227 and the freezer compartment 228. However, it is more costly to use a different material for each storage compartment depending on the storage configuration used. Reduction and improvement in reliability can be achieved.

  Further, the vertical portion 233b of the connecting member 233 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. However, in general, the linear expansion coefficient is 1.0 to 3.0 × 10 −6 cm / cm · ° C. for metals and 1.0 to 15.0 × 10 −5 cm / cm · ° C. for resins. 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, as the material of the vertical portion 233b of the connecting member 233, when the mounting position accuracy of the rail member 231 is required during the operation of the refrigerator 218, metals having a small linear expansion coefficient are used, and the storage room side having a high temperature zone is used. In the case where it is required to prevent the dew condensation and to suppress the increase in power consumption due to heat leakage, it is preferable to use resins having a low thermal conductivity. Moreover, you may integrate and use both with respect to several storage chambers.

  In the present embodiment, the rail member 231 is used for the vegetable compartment 227 and the freezing compartment 228. However, the present invention can be appropriately applied to a storage compartment provided with a drawer container. For example, you may use for the switching room 225 located in the upper part of the vegetable compartment 227, the ice making room (not shown) attached to the side of the switching room 225, etc.

(Embodiment 3)
11 is a side sectional view of a refrigerator according to Embodiment 3 of the present invention, FIG. 12 is an enlarged view of a main part of FIG. 11, FIG. 13 is a sectional view taken along line AA of FIG. 11, and FIG. FIG. 15 is a sectional view of the rail member of the refrigerator according to the embodiment.

  In the figure, a heat insulating box 319 of the refrigerator 318 is obtained by filling a foam heat insulating material 322 between an inner box 320 and an outer box 321 provided with a vacuum heat insulating material 321a, and has a front opening 319a. The walls 323, 323a, and 326 form a refrigerator compartment 324, a switching chamber 325, a vegetable compartment 327, and a freezer compartment 328 from above.

  Moreover, the both sides | surfaces of the partition wall 326 have the open part 326a, and the inside of the partition wall 326 is filled with the foam heat insulating material 322 like the heat insulation box 319. FIG.

  The vegetable compartment 327 and the freezer compartment 328 are respectively closed at the front opening 319a by the vegetable compartment door 329 and the freezer compartment door 330, and the vegetable compartment 327, the vegetable compartment door 329, the freezer compartment 328, and the freezer compartment door 330 are respectively By being connected by the rail member 331, it can be drawn and slid in the front-rear direction.

  In addition, the container 333 of each storage chamber is moved in synchronization with the door support member 337 disposed and fixed on the moving rail 331b after the rail member 331 is installed in the storage, When each storage chamber is at least fully opened, the container 333 is detachable upward.

  The reinforcing member 332 is a position restricting means for the rail member 331. The reinforcing member 332 is provided on both sides of the storage chamber from the front opening 319a that allows the rail member 331 to slide in the front-rear direction, and is fixed to the fixed rail 331a of the rail member 331. Yes. Further, the reinforcing member 332 is fixed to the inner box 320 with a distance of 10 mm or more from the vacuum heat insulating material 321a and embedded in the foam heat insulating material 322.

  Further, all the reinforcing members 332 are included in the vacuum heat insulating material 321a on the projection surface viewed from the side surface of the heat insulating box 319. That is, a vacuum heat insulating material 321 a is always provided on the outer box 321 side of the reinforcing member 332 via the foam heat insulating material 322.

  The rail member 331 includes a fixed rail 331a, a moving rail 331b in which a door support member 337 is disposed and fixed, an intermediate traveling rail 331c provided between the fixed rail 331a and the moving rail 331b, an intermediate traveling rail 331c, and a fixed rail. It consists of a plurality of bearings 331d, which are rotation support members that support the engagement between 331a and the moving rail 331b.

  A rail member 331 having a fixed rail 331a, a movable rail 331b, and an intermediate traveling rail 331c disposed between the fixed rail 331a and the movable rail 331b via a bearing 331d is fixed in a state of being assembled in advance. The fixed rail 331a is positioned and fixed by the reinforcing member 332, and the clearance between the rails can be set to a minimum.

  Further, by providing the door reinforcement member 336 for attaching the door support member 337 on the foam insulation side of the storage compartment door, the fixing of the moving rail 331b becomes stable, and the position regulation of the rail member 331 is further ensured. Become.

  The reinforcing member 332 is independently regulated in position with the fixed rail 331a of the rail member 331, and is made of a material whose linear expansion coefficient is 1.0 to 3.0 × 10 −6 cm / cm · ° C. Yes.

  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 331b and the intermediate traveling rail 331c of the rail member 331 provided on both sides of each storage room are smoothly slid toward the front side as the rotation support member 331d rotates. Move.

  Along with this, the container 332 supported by the door support member 337 disposed on the rail member 331 is also pulled out to the front, so that the object to be cooled stored in the container 333 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 331a and the movable rail 331b can be reduced by fixing the rail member 331 in which the fixed rail 331a and the movable rail 331b are assembled in advance to both side walls. It is possible to configure a high-quality drawer with little play. Further, since the variation in mounting can be reduced by reducing the clearance, it is possible to suppress the appearance failure such as the inclination due to the door mounting failure and the non-uniform feeling with other doors. Further, by supporting the fixed rail 31a and the moving rail 331b with a bearing 331d that is a rotation support member, the moving rail 331b can move smoothly even when a load is applied to the container 333, so that the pulling operation force is reduced. Can improve usability.

  Further, by restricting the position of the mounting of the fixed rail 331a of the rail member 331 by the reinforcing member 332, the width dimension or parallelism of the pair of left and right rail members 331 can be maintained as specified, and the reinforcing member 332 is a vacuum heat insulating material 321a. It is possible to suppress dimensional changes due to thermal contraction during cooling after the foamed heat insulating material 322 is filled in the heat insulating box 319 in which the heat sink is disposed.

  In the present embodiment, all the reinforcing members 332 are included in the vacuum heat insulating material 321a on the projection surface viewed from the side surface of the heat insulating box 319. The reinforcing member 332 is held by the strength of the foam heat insulating material 322 by filling the heat insulating box 319 in the heat insulating box 319, but the reinforcing member 332 always has a foam heat insulating material 322 on the outer box 321 side. By providing the vacuum heat insulating material 321a, the outer box side of the reinforcing member 332 has a multilayer structure with the vacuum heat insulating material 321a having higher strength than the foam heat insulating material 322 in addition to the foam heat insulating material 322. Therefore, the strength of the heat insulating box 319 around the reinforcing member 332 can be greatly improved, and the mounting strength of the rail member 331 provided in the reinforcing member is further improved by further increasing the mounting strength of the reinforcing member. Can be made.

  In addition, even when the rail member 331 having a small clearance between the fixed rail 331a and the moving rail 331b is preliminarily assembled and fixed to the fixed portions on both side surfaces, the dimensional system between the pair of left and right rail members 331 can be kept high. The operability when the container 333 is pulled out can be enhanced by the reinforcing member 332 that is a position restricting means. In addition, operability and reliability can be ensured over a long period of time.

  Further, by providing the intermediate rail 331c, it is possible to increase the pull-out allowance of the moving rail 331b of the rail member 331, and to draw out to the back of the container 333. It is possible to prevent loss due to forgetting to use the cooling object and to easily remove the container 333, thereby improving usability.

  Further, since the reinforcing member 332 in which the positions of the left and right fixed rails 331a are regulated is embedded in the foam heat insulating material 322 of the heat insulating box 319 provided with the vacuum heat insulating material 321a, condensation and frost formation may occur due to use of the refrigerator 318. In addition, since it does not come into contact with air, the structure is excellent in corrosion resistance and inexpensive. Moreover, since it is set as the heat insulation box which arrange | positioned the vacuum heat insulating material 321a, it is hard to be influenced by the heat absorption from external air, and can aim at the energy-saving effect. Furthermore, by applying a vacuum heat insulating material 321a having higher compressive strength and bending strength than the foam heat insulating material 322, the sliding property of the drawer door can be improved while increasing the structural strength of the heat insulating box itself.

  In addition, the reinforcing member 332 for restricting the position of the fixed rail 331a secures a distance of 10 mm or more from the vacuum heat insulating material 321a, so that the fluidity of the foam heat insulating material 322 can be secured and the heat insulating box 319 having a predetermined heat insulating performance can be provided. Can be provided.

  In addition, since the reinforcing member 332 independently regulates the position of the fixed rail 331a of the rail member 331, there is no heat leakage due to heat transfer from each storage chamber, contributing to energy saving, and miniaturization and cost reduction. You can also.

  In addition, the linear expansion coefficient of the reinforcing member 332 is set to 1.0 to 3.0 × 10 −6 cm / cm · ° C., and the operation reliability of the rail member 331 is improved by suppressing the influence of shrinkage during operation of the refrigerator 318. can do.

(Embodiment 4)
16 is a side sectional view of the refrigerator according to Embodiment 4 of the present invention, FIG. 17 is a sectional view taken along line AA of FIG. 16, FIG. 18 is a schematic assembly diagram of the refrigerator of the same embodiment, and FIG. 20 is an exploded view of the rail member of the refrigerator, FIG. 20 is a cross-sectional view of the rail member of the refrigerator of the embodiment, FIG. 21A is a perspective view of a main part of the rail member mounting surface of the refrigerator of the embodiment, and FIG. 21 (b) is a fragmentary plan sectional view of the heat insulation box of the refrigerator of the same embodiment, and FIG. 22 is a fragmentary sectional view of the rail member mounting surface of the refrigerator of the same embodiment.

  In the figure, the heat insulating box 419 of the refrigerator 418 is filled with a foam heat insulating material 422 between the inner box 420 and the outer box 421, has a front opening 419a, and by partition walls 423, 423a and 426, A refrigerator room 424, a switching room 425, a vegetable room 427, and a freezing room 428 are formed from the top.

  Further, the vegetable compartment 427 arranged at the upper part of the partition wall 426 has a cooling temperature of about 5 ° C., and the freezing room 428 arranged at the lower part has a cooling temperature of about −20 ° C. Is set to

  The vegetable compartment 427 and the freezer compartment 428 are respectively closed at the front opening 419a by the vegetable compartment door 429 and the freezer compartment door 430, and the vegetable compartment 427, the vegetable compartment door 429, the freezer compartment 428 and the freezer compartment door 430 are respectively By being connected by a rail member 431, it can be drawn and slid in the front-rear direction.

  The rail member 431 includes a fixed rail 431a, a moving rail 431b, and a plurality of bearings 431d which are rotation support members that support the engagement between the fixed rail 431a and the moving rail 431b. The fixed rail 431a, the moving rail 431b, and the bearing The fixed rail 431a is fixed to the both side wall surfaces of the inner box 420 in a state in which 431d is pre-assembled, and the respective storage chambers and the storage chamber doors are connected by fixing the moving rails 431b to the respective storage chamber doors. .

  The rail member 431 in which the bearing 431d is disposed between the fixed rail 431a and the moving rail 431b, and the fixed rail 431a and the moving rail 431b is incorporated in advance, and the clearance between the rails is set to a minimum. can do.

  Furthermore, the left and right rail members 431 fixed to the both side wall surfaces of the inner box 420 have a bilaterally symmetric shape and exhibit better slidability by providing both left and right.

  The container 432 of each storage chamber is supported by the moving rail 431b of the rail member 431 after fixing the rail member 431 to the inner box 420, and moves back and forth together with the moving rail 431b in synchronization with pulling out each storage chamber door in the front-rear direction. Further, the container 432 is detachable upward when each storage chamber door is fully opened.

  Further, the fixed rail 431a of the rail member 431 is fixed by the reinforcing member 433 through the inner box 420 through the mounting holes 434, thereby increasing the mounting strength of the fixed rail 431a.

  Further, by fixing the fixed rail 431a of the rail member 431 provided in each storage chamber integrally with one reinforcing member 433, a plurality of rail members 431 arranged in the vertical direction can be simultaneously reinforced.

  Since the reinforcing member 433 is disposed on the side of the inner box 420 filled with the foam heat insulating material 422, the reinforcing member 433 has a structure that is not exposed to each storage chamber.

  In addition, both ends of the reinforcing member 433 reach the vicinity of the center in the vertical direction of the vegetable compartment 427 and the freezing compartment 428, and the fixed rail 431a of the rail member 431 in each storage chamber is fixed to the fixing portion 433c of the reinforcing member 433, At least the fixing portion 433 c of the reinforcing member 433 is in contact with the surface of the inner box 420 on the side filled with the foam heat insulating material 422. Further, the left and right reinforcing members 433 are provided with holes 433d.

  In addition, when the reinforcing member 433 becomes large, the same effect as the case where the reinforcing member 433 is integrated can be obtained by dividing the upper and lower portions, providing the fixing portion 433c, and providing the hole 433d as necessary.

  The bearing 431d may be a rotation support member, and for example, a roller or the like may be used.

  As shown in FIG. 21, the draft angle in the inner box depth direction of the mounting surface 435 of the inner box 420 to which the fixed rail 431 a of the rail member 431 is mounted is the upper or lower inner side continuous with the rail member mounting surface 435. It is set smaller than the draft angle in the box depth direction. As described above, the stepped portion 420a is formed by the difference in the draft angle in the depth direction of the inner box 420 between the rail member mounting surface 435 and other portions.

  It is preferable that the step 420a has a continuously curved surface shape by vacuum forming or the like of the inner box so that the appearance is not conspicuous.

  The difference in draft angle between the rail member mounting surface 435 where the step 420a is formed and the other surface of the inner box is preferably 0.2 ° or more and 0.7 ° or less.

  This will be described in terms of general refrigerator dimensions. In a refrigerator having a depth of about 520 mm and a width of about 620 mm, the draft angle of the portion other than the rail member mounting surface 435 is generally about 0.5 ° to 1.0 °. Therefore, if the angle is less than 0.2 °, the draft angle of the rail member mounting surface 435 may be about 7 mm at the maximum on one side, and it is difficult to maintain the parallelism of the rail mounting portion. When the width of the left and right rails is significantly reduced from the front side with respect to the depth direction, when the high-precision rail member 431 with a small clearance of the sliding portion is used, parallelism blur is absorbed by the clearance. Since it cannot be performed, there is a concern that it causes malfunction and the rail cannot be moved back and forth.

  If the draft angle difference is larger than 0.7 °, the draft angle of the rail member mounting surface 435 itself is about 3 mm or less on one side, and it becomes easy to maintain the parallelism of the rail mounting portion. Since a step of about 7 mm at maximum is generated between the portion other than 435, the step 420a is conspicuous, the appearance inside the product is not good, and the die-cutting work after molding the inner box 420 is a rail. Since only the member mounting surface 435 has a too small gradient, the productivity is difficult.

  Therefore, it is desirable that the difference in the gradient angle is 0.2 ° or more and 0.7 ° or less because the parallelism of the rail member mounting surface 435, the appearance of the step 420a, and the productivity of the inner box can be substantially satisfied.

  Further, in view of the background that the amount of draft of the portion other than the rail member mounting surface 435 is close to the lower limit in the recent flow of the expansion of the internal volume due to the thin wall of the heat insulating wall, more preferably If the upper limit of the difference in gradient angle is 0.5 ° or less, the inner box 420 can be molded while maintaining the high productivity without impairing the appearance inside the cabinet, and the parallelism of the rail member mounting surface 435 is also substantial. Therefore, it is possible to provide a high-reliability and high-quality drawer door device in the case where a high-precision rail member 431 is provided.

  Furthermore, it is desirable that the left and right rail member mounting surfaces 435 of the inner box 420 be set substantially in parallel.

  Further, the reinforcing member 433 provided on the rail member mounting surface 435 on the inner box foam heat insulating material side extends vertically so as to integrally cover at least the rail member mounting surface 435 with different draft angles in the inner box depth direction. After forming and fixing to the inner box 420 with a positioning member, for example, a pin (not shown), the foam insulation is filled. That is, the reinforcing member step 433 a provided in the reinforcing member 433 has a shape corresponding to the step 420 a of the inner box 420.

  Further, a convex portion 436 is provided below the rail member mounting surface 435 of the inner box 420, the lower portion of the rail member 431 is positioned on the convex portion 436, and fixed to the reinforcing member 433 via the inner box 420 with screws 437. The When the rail member 431 is fixed, the convex portion 436 and a part of the lower portion of the rail member 431 are located in contact with the convex portion 436, and a part forms a space 438 between the convex portion 436. When the rail member 431 is assembled and attached to the inner box 420, the attachment hole of the reinforcing member 433 that is fastened to the screw 437 in a state where the lower portion of the rail member 431 is in contact with the convex portion 436 should be positioned slightly above the screw 437. Is desirable.

  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 431b and the intermediate travel rail 431c of the rail member 431 provided on both sides of each storage room slide smoothly toward the front side as the rotation support member 431d rotates. Move.

  Along with this, the container 432 supported by the rail member 431 is also pulled forward, and the object to be cooled stored in the container 432 can be taken out and a new object to be cooled can be stored.

  As described above, in this embodiment, the clearance between the fixed rail 431a and the movable rail 431b is fixed by fixing the rail member 431 in which the fixed rail 431a and the movable rail 431b are preliminarily assembled to both side walls of the inner box 420. It can be made small, and a high-quality drawer with little backlash can be configured. Further, by supporting the fixed rail 431a and the moving rail 431b with a bearing 431d which is a rotation support member, the moving rail 431b can move smoothly even when a load is applied to the container 432, so that the pulling operation force is reduced. Can improve usability.

  Further, by enhancing the mounting strength of the fixed rail 431a of the rail member 431 by the reinforcing member 433, the operability of the drawer can be stably performed, and the operability can be maintained for a long time.

  Moreover, since the fixed rail 431a of the rail member 431 provided in each storage chamber is integrally fixed by a single reinforcing member 433, a plurality of rail members 431 arranged vertically can be reinforced at the same time. When the rail member is provided with the rail member, the operability of the rail member and long-term reliability can be ensured, and the assembling workability can be simplified and the cost can be reduced.

  In addition, you may provide the position control means which controls the position of the left and right reinforcement member 433 so that the front and rear, the left and right, the vertical dimension or the parallelism of the rail member 431 can be maintained as specified.

  Further, since the reinforcing members 433 are not exposed in the respective storage chambers, it is possible to suppress a reduction in the storage volume as compared with the case where the reinforcing members 433 are arranged in the respective storage chambers.

  Further, since the reinforcing member 433 for connecting the upper and lower fixed rails 431a is embedded in the foam heat insulating material 422 of the heat insulating box 419, it is possible to prevent condensation and frost formation of the reinforcing member 433 when the refrigerator 418 is used. Furthermore, since the reinforcing member 433 does not come into contact with air, the corrosion resistance of the reinforcing member 433 can be improved.

  Moreover, normally, when filling and foaming a foam heat insulating material in a heat insulation box, a jig (foaming tool) for restraining is disposed inside to prevent deformation of the inner box due to foaming pressure. In order to make it easy to take out the foaming tool after foaming, a draft angle is generally formed in the foaming tool and the inner box.

  Under such circumstances, in the present embodiment, the draft angle in the inner box depth direction of the mounting surface 435 of the inner box 420 to which the fixed rail 431a of the rail member 431 is mounted is the upper side continuous with the rail member mounting surface 435 or Since it is set smaller than the draft angle in the inner box depth direction, the dimensional accuracy between the left and right rail members can be increased, and the dimensional difference between the front and rear can be minimized when moving the rail back and forth. Thus, it is possible to provide a refrigerator equipped with a high-quality and easy-to-use drawer door.

  Further, the rail member mounting surface 435 including the rail member 431 of the inner box 420 forms a stepped portion 420a with respect to other portions, and the reinforcing member 433 has the reinforcing member stepped portion 435a corresponding to the stepped portion 420a. Since it has, the intensity | strength of the reinforcement member 433 can be raised more because the reinforcement member 433 becomes a complicated shape which has a level | step difference.

  In addition, when the foam heat insulating material 422 is filled between the inner box 420 and the outer box 421 by the reinforcing member stepped portion 435a, the surface area of the reinforcing member 435 contacting the foam heat insulating material 422 is increased, so that the reinforcing member 425 The holding force by the foam heat insulating material 422 can be further increased, that is, the mounting strength of the rail member 431 can be further increased.

  Further, by setting the left and right rail member mounting surfaces 435 of the inner box 420 substantially in parallel, the dimensions between the left and right rails are substantially the same, and the operability when the door is pulled out and stored can be improved.

  Further, the reinforcing member 433 provided on the inner box foam heat insulating material side of the rail member mounting surface 435 is formed by vertically extending different draft angles in the inner box depth direction so as to cover at least the rail member mounting surface 435. Thus, the strength of the rail mounting surface can be increased, and the dimensional accuracy between the left and right rails can be further increased by the reinforcing member 433. Further, by using the reinforcing member 433 integrally formed with different draft angles in the inner box depth direction, deformation of different draft angles of the inner box due to foaming pressure at the time of foaming can be prevented, and the rail member mounting surface 435 can be prevented. Even when the draft angle is set to a minimum, the operation of the foaming tool can be performed smoothly.

  Further, a convex portion 436 is provided below the rail member mounting surface 435 of the inner box 420, the lower portion of the rail member 431 is positioned on the convex portion 436, and fixed to the reinforcing member 433 via the inner box 420 with screws 437. Therefore, when the rail member 431 is assembled, the convex portion 436 can be used for smooth assembly.

  Further, when the rail member 431 is fixed, the convex portion 436 and a part of the lower portion of the rail member 431 are located in contact with the convex portion 436, and a part forms a space 438 between the convex portion 436, 438 can promote the flow of cold air, and can prevent the occurrence of frost, condensation, etc. near the rail.

  At this time, when the rail member 431 is assembled and attached to the inner box 420, the attachment hole of the reinforcing member 433 that is fastened to the screw 437 with the lower portion of the rail member 431 in contact with the convex portion 436 is slightly above the screw 437. By positioning it, it is possible to absorb the mounting variation at the time of mounting the rail member, the molding variation of the inner box, etc., and further improve the working efficiency.

  In addition, by providing the hole 433d in the reinforcing member 433, heat transfer from the reinforcing member 433 is suppressed when the temperature zones of the plurality of storage chambers are different, thereby preventing condensation on the side of the storage chamber having a high temperature zone and heat leakage. Increase in power consumption can be suppressed. Further, by providing a plurality of holes 433d provided in the reinforcing member 433 to such an extent that the strength can be maintained, the amount of heat transfer can be effectively reduced. Furthermore, since the foam heat insulating material 422 fills the hole 433d, the strength of the refrigerator 418 is improved.

  In this embodiment, the rail member 431 and the container 432 are shared by the vegetables 427 and the freezer compartment 428. However, it is more costly to use materials formed of different materials for each storage room depending on the storage form of actual use. Reduction and improvement in reliability can be achieved.

  Further, in this embodiment, the vegetable chamber 427 and the freezing chamber 428 are described using the rail member 431. However, the present invention can be appropriately applied to a storage chamber provided with a drawer container. For example, you may use for the switching room 425 located in the upper part of the vegetable room 427, the ice making room (not shown) attached to the side of the switching room 425, etc.

  Further, in the present embodiment, the reinforcing member 433 is described as one in which the rail members 431 of the vegetable compartment 427 and the freezing compartment 428 are fixed integrally. However, the vegetable compartment 427 and the freezing compartment 428 are independently reinforced. A member may be used. In this case, in a refrigerator in which the vegetable compartment 427 and the freezer compartment 428 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 connecting member is further suppressed when the temperature zones of the plurality of storage chambers are different compared to when a plurality of rail members are fixed to one connecting 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 this embodiment, both ends of the reinforcing member 433 reach the vicinity of the center in the vertical direction of the vegetable compartment 427 and the freezing compartment 428, respectively, so that the rail reinforcing members 433 of the vegetable compartment 427 and the freezing compartment 428 are reinforced by one. In this case, since the reinforcing member 433 is large, it may be divided into upper and lower parts.

  In other words, each of the vegetable compartment 427 and the freezing compartment 428, which are a plurality of drawer-type storage rooms, is provided with rail members, and the fixed rails 431a of the respective rail members are position-regulated and fixed by independent reinforcing members 433.

  As a result, the reinforcing member 433 is reduced in size, so that the assembling property is excellent, and the position of each reinforcing member is restricted so that the assembling reliability can be ensured. In addition, when the reinforcing member 433 is provided independently for each rail member 431 as described above, each reinforcing member 433 is provided with a fixing portion 433c, and when the hole 433d is provided, the reinforcing member 433 is integrated. Accuracy can be obtained

  As described above, the refrigerator according to the present invention has a small amount of rattling, and can smoothly open and close the drawer even when a load is applied to the container. It can also be applied to applications such as a cooling storage drawer.

Side sectional view of the refrigerator according to Embodiment 1 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 Side sectional view of the refrigerator in the second 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 Side sectional view of the refrigerator according to Embodiment 3 of the present invention. 11 is an enlarged view of the main part of FIG. AA sectional view of FIG. 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 Side sectional view of the refrigerator according to Embodiment 4 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 (A) Main part perspective view of rail member attachment surface of refrigerator of same embodiment (b) Main part plane sectional view of heat insulation box of refrigerator of same embodiment Sectional drawing of the principal part of the rail member attachment surface 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, 218, 318, 418 Refrigerator 19, 219, 319, 419 Heat insulation box 19a, 219a, 319a, 419a Front opening 20, 220, 320, 420 Inner box 20a, 33a Holes 21, 221, 321, 421 Outer box 22, 222, 322, 422 Foam insulation 26, 226, 326, 426 Partition wall 27 Vegetable room 28 Freezer room 31a, 231a, 331a, 431a Fixed rail 31b, 231b, 331b, 431b Moving rail 31c Intermediate running rail 31d Bearing 32 , 232, 333, 432 Container 33, 332, 433 Reinforcement member 34, 234 Positioning pin 420a Stepped portion 433a Reinforced member stepped portion

Claims (9)

  An inner box, an outer box, a heat insulating box having a front opening provided with a heat insulating material filled between the inner box and the outer box; a container provided inside the heat insulating box; and A drawer-type storage chamber comprising a door provided on the front side of the container, and a rail member that allows the container to move back and forth, the rail member being a fixed rail provided on the heat insulating box side; And a moving rail provided on the door side, and the rail member is fixed to a reinforcing member provided between the inner box and the outer box while being attached to the inner wall surface of the inner box. The refrigerator is provided with position restriction means that can be positioned with respect to the inner box.   The refrigerator according to claim 1, wherein the reinforcing member is disposed on the foam insulating material side in contact with the inner box, and the position regulating means provided in the reinforcing member penetrates the inner box and is exposed to the storage chamber side.   The refrigerator according to claim 1 or 2, wherein the position restricting means provided in the reinforcing member positions the reinforcing member with respect to the inner box and positions the fixed rail with respect to the inner box.   The refrigerator according to any one of claims 1 to 3, wherein the position regulating means provided in the reinforcing member is formed integrally with the reinforcing member.   The refrigerator according to any one of claims 1 to 3, wherein the position regulating means provided in the reinforcing member is formed as a separate part from the reinforcing member.   The refrigerator according to claim 5, wherein the position regulating means is molded of resin.   The refrigerator according to any one of claims 1 to 6, wherein at least one pair of position restriction means provided in the reinforcing member is provided substantially symmetrically in the left-right direction of the heat insulating box.   The refrigerator according to any one of claims 1 to 7, wherein a plurality of position regulating means provided in the reinforcing member are formed in a depth direction of the heat insulating box.   The rail member mounting surface provided with the rail member of the inner box has a stepped portion formed with a step with respect to the other portion, and the reinforcing member also has a reinforcing member stepped portion corresponding to the stepped portion. Item 9. The refrigerator according to any one of Items 1 to 8.

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