RU2445559C1 - Rail guiding device and refrigerator using it - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: refrigerator with the rail guiding device has a bracket that is attached to the inner surface of the inner shell, the first, second and third rail guides, which are arranged so that their longitudinal directions are identical. The guides have an elongated shape and support the capacity for storage. The second rail guide has flanges, protruding into the right and left in the upper and lower parts in the longitudinal direction, a bottom flange is supported on the first rail guide in such a way as to move in the longitudinal direction, the first rail guide is attached to the bracket and has flanges projecting to a height greater than height of the lower flange of the second rail guide on the right and left sides in the longitudinal direction, and the third rail guide supports a flange on the second rail guide in such a way as to be movable in the longitudinal direction, and supports the storage capacity, and the part to prevent deformation is formed based on previous connection between the site of a flat surface of the fastener attached to the inner shell, and a section of the flat surface of the outer part of the first rail guide.

EFFECT: increased convenience when using the refrigerator.

37 cl, 42 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a refrigerator and, in particular, to a retractable design of a storage chamber.

BACKGROUND OF THE INVENTION

Conventionally, a refrigerator includes a plurality of storage chambers, for example a refrigerator, a freezer and a vegetable compartment. In addition, the freezer and vegetable chamber are usually located in the lower parts of the refrigerator in the form of retractable storage chambers in terms of cooling efficiency and convenience, etc.

Such retractable storage chambers require smoothness when the storage chamber is inserted and removed, ease of placement and removal of food products from the storage chamber, ease of attachment and detachment of the container forming the storage chamber, etc. Therefore, a technology has also been disclosed that improves the convenience of a retractable storage room (for example, see Patent Documents 1 and 2).

Fig. 40 is a sectional side view of a conventional refrigerator.

The traditional refrigerator 4051, shown in FIG. 40, includes, as a storage chamber, inside a thermally insulated body 4019, starting from the top, a refrigerator 4025, a temperature-controlled switching chamber 4026 below the refrigerator 4025, an ice making chamber (not shown), located immediately adjacent to the switching chamber 4026, the vegetable chamber 4027 below the switching chamber 4026 and the ice making chamber, and the freezing chamber 4028 below the vegetable chamber 4027.

The thermally insulated body 4019 is formed by an external body 4021, an internal body 4020, and a foaming and heat-insulating material 4022 filled between the external body 4021 and the internal body 4020.

The container 4027a forming the vegetable chamber 4027 is supported by two rail guides 4031, each connected to the retractable door of the vegetable chamber 4029.

In addition, the container 4028a forming the freezer 4028 is supported by two rail guides 4031, each connected to a sliding door 4030 of the freezer.

The vegetable compartment 4027 and the freezer compartment 4028 are each configured to thereby become retractable storage chambers that can be inserted and removed in relation to the thermally insulated housing 4019.

41 is an exploded view of a rail device 4031 in a conventional refrigerator 4051.

Fig. 42 is a front view showing a construction diagram of a rail device 4031 in a conventional refrigerator 4051.

The rail device 4031 shown in FIG. 41 and 42, includes a first rail (fixed rail) 4031a, a third rail (moving rail) 4031b, a second rail (middle moving rail) 4031c provided between the first rail (fixed rail 40 and) a third rail (movable rail) 4031b, and a plurality of bearings 4031d that engage the second rail (middle moving rail lane) 4031c, a first rail (fixed rail) 4031a and a third rail (moving rail) 4031b.

Specifically, a plurality of bearings 4031d are rotatably held by a ball cage 4031e, as shown in FIG. 42.

The rail device 4031, in the state of union of each of these elements, has a first rail (fixed rail) 4031a attached to the inner surface of the inner case 4020, thereby thereby being installed in a thermally insulated case 4019.

Specifically, the rail device 4031 is each attached to portions corresponding to the right side and the left side of each of the vegetable chamber 4027 and the freezer 4028 on the inner surface of the inner case 4020. In other words, two pairs of first rail tracks (fixed rail tracks) 4031a, moreover, each pair has a right and left rail rails mounted on the inner surface of the inner housing 4020.

In addition, as shown in FIG. 42, each first rail (fixed rail) 4031a clamping together with the holder member 4032 the inner housing 4020 is attached by the holder member and the bolt.

Moreover, the retractable vegetable chamber door 4029 is attached to the ends of two third rail tracks (moving rail tracks) 4031b of one pair located above, while the freezing chamber sliding door 4030 is attached to the ends of two third rail tracks (moving rail tracks) 4031b of the other pair .

Moreover, the container 4027a in the vegetable chamber 4027 is supported on its right and left side by two third rail tracks (sliding rail tracks) 4031b and moves back and forth together with the third rail track (moving rail track) 4031b synchronously with the movement in the back and forward retractable door 4029 vegetable chamber.

Furthermore, when at least the vegetable chamber 4027 is fully open, i.e. when the retractable door 4029 of the vegetable chamber is extended to the maximum extension position, the container becomes easily removable and removable in the vertical direction.

When the freezer 4028 is likewise fully open, the container 4028a is easy to attach and detach vertically.

In the traditional refrigerator 4051, the choice of such a design for the rail guide 4031, for example, makes the so-called backlash small and the attachment and detachment of the container easy, thus the convenience of using a retractable storage room is enhanced.

Here, in recent years, drawer-type storage chambers, such as vegetable chambers, in refrigerators perceive consumer needs and seek to increase their volumes in which food can be stored by thinking through, for example, the location of elements inside the refrigerator.

In addition, it is believed that this trend will remain in the future. Those. it is believed that more weight than traditionally will act on the rail-guiding device of the retractable storage chamber.

In addition, even if the capacity is increased, the ease of placing food, etc. and removing them from the retractable type storage chamber, disconnecting and attaching the container forming the retractable type storage chamber, etc. must be provided.

In other words, the extension distance of the storage chamber should provide at least a distance at which there is no collision with other elements of the refrigerator when connecting and disconnecting the container.

Therefore, the case in which the conventional rail guide device 4031 is selected is assumed to be a retractable storage chamber mechanism with even greater capacity.

In this case, the supported mass becomes larger and the extension distance is large for the rail device 4031, in accordance with which, for example, as shown in FIG. 42, the portion surrounded by the dashed line of the first rail (fixed rail) 4031a is inclined lowering in the direction of the arrow (inside the refrigerator). Those. the first rail (fixed rail) 4031a is set to a position in which the rail is more easily opened.

Thus, when the first rail guide (fixed rail) 4031a, etc., which is part of the rail device 4031, is deformed, there are problems of reducing usability, for example, smooth insertion and removal of the storage room.

Naturally, the problem of deformation is considered eliminated, for example, by increasing the thickness of the elements, for example, the first rail (fixed rail) 4031a, or manufacturing elements using a special material of high rigidity.

However, this method of solution causes factors such as reducing the available space in the refrigerator, increasing the mass of the refrigerator, increasing the cost of manufacturing the refrigerator, etc. Thus, the method is not desirable.

Further, a case in which the extension distance is increased is contemplated by using the middle rail guide described in Patent Document 2 as a retractable storage chamber mechanism with even greater capacity.

In this case, in the state of maximum extension of the sliding door, the innermost part (end surface from the side of the storage chamber) of the third rail (moving rail) can be located outside the portion of the front surface of the outer casing, while it is desirable that the open part of the innermost part (end surface from the side of the storage chamber) of the third rail guide (moving rail) was protected.

In addition, in the state of maximum extension of the sliding door, assuming that the finger is placed between the innermost part of the third rail (the moving rail) and the front surface portion of the outer case, and then the sliding door closes, it is desirable that the open part of the innermost part ( the end surface from the side of the storage chamber) of the third rail (the movable rail) was protected.

Patent Document 1: Unexamined Japanese Patent Publication No. 2006-177653.

Patent Document 2: Unexamined Japanese Patent Publication No. 2006-046710.

SUMMARY OF THE INVENTION

The present invention provides a refrigerator comprising a retractable storage room and not losing convenience, even if the storage capacity is large. The refrigerator of the present invention includes a thermally insulated casing comprising an inner casing, an outer casing and heat-insulating material filled between the inner casing and the outer casing, and a retractable type storage chamber, the storage chamber comprising a rail device therein containing a first rail rail (first rail guide rail (fixed rail)), a second rail guide (middle rail guide) and a third rail guide (third rail a rail (sliding rail)), which are elongated, and supporting the storage container with the ability to move back and forth, and the rail device includes a part to prevent lowering and directly and indirectly supports and moves back and forth with sliding storage tank.

Additionally, the present invention is a refrigerator comprising a rail guide protective element on an end surface from a storage chamber side of a third rail rail.

Due to such a construction, the rail guide device includes a part for preventing lowering, whereby the rail guide device is designed to hardly open when a force is applied to the rail guide device; even when the rail guide device in the refrigerator of the present invention fully supports the large-capacity storage chamber, deformation of the rail guide device is prevented, and therefore good usability of the storage chamber is maintained.

In addition, even when the inclusion of the rail guarding element in a fully openable manner supports the large-capacity storage chamber, the end surface on the side of the storage chamber of the third rail guide can be protected, while good usability of the storage chamber, safety in use, and dignity of appearance are maintained.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a front view of a refrigerator in accordance with a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with a first embodiment of the present invention.

FIG. 3 is a front view showing a construction diagram of a rail device in accordance with the first embodiment.

4 is a first perspective view showing an appearance of a rail device in accordance with a first embodiment.

5 is a second perspective view showing the appearance of a rail device in accordance with the first embodiment.

6 is a cross-sectional side view of a refrigerator in accordance with a first embodiment of the present invention.

7 is a front view of a refrigerator in accordance with a first embodiment of the present invention.

Fig. 8 is an exploded view of a refrigerator in accordance with a first embodiment of the present invention.

FIG. 9 is an exploded view of a rail device in accordance with a first embodiment of the present invention.

10 is a front view showing a construction diagram of a rail device in accordance with a first embodiment of the present invention.

11 is a front view showing a construction diagram of a rail device in accordance with a second embodiment of the present invention.

12 is a front view showing a construction diagram of a rail device 81 in accordance with a third embodiment of the present invention.

13 is a front view showing a construction diagram of a rail device in accordance with a fourth embodiment of the present invention.

FIG. 14 is a front view showing a construction diagram of a rail device in accordance with a fifth embodiment of the present invention.

15 is a front view of a refrigerator in accordance with a sixth embodiment of the present invention.

FIG. 16 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with a sixth embodiment of the present invention.

FIG. 17 is a sectional view showing a structural diagram of a rail device 140 in accordance with a sixth embodiment of the present invention.

FIG. 18 is a perspective view showing the appearance of a rail device in accordance with a sixth embodiment of the present invention.

FIG. 19 is a perspective view showing a state in which a holder member is attached in a sixth embodiment of the present invention.

20 is a perspective view showing a holder member in accordance with a sixth embodiment of the present invention.

FIG. 21 is a sectional view showing a construction diagram of another rail guide device according to a sixth embodiment of the present invention.

FIG. 22 is a sectional view showing a construction diagram of a rail device in accordance with a seventh embodiment of the present invention.

FIG. 23 is a sectional view showing a construction diagram of another rail device in accordance with a seventh embodiment of the present invention.

24 is a front view of a refrigerator in accordance with an eighth embodiment of the present invention.

Fig is a longitudinal section of a refrigerator in accordance with the eighth embodiment.

FIG. 26 is an enlarged perspective view showing the appearance of a storage container in accordance with an eighth embodiment.

FIG. 27 is a flat section view showing a storage container 521 and a telescoping unit 540 in accordance with an eighth embodiment.

FIG. 28 is a front view of a refrigerator in accordance with a ninth embodiment of the present invention.

29 is a front view of a refrigerator in accordance with a tenth embodiment of the present invention.

FIG. 30 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with a tenth embodiment of the present invention.

FIG. 31 is a perspective view showing an appearance of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention.

32 is a side view showing a state in which the vegetable compartment is pulled out of the refrigerator in accordance with a tenth embodiment of the present invention.

Fig. 33 is a side view of the main elements of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention.

Fig. 34 is a perspective view of the main elements of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention.

Fig. 35 is a sectional view showing a state in which the rail guarding element and the door frame are fastened in the rail device for the refrigerator according to the tenth embodiment of the present invention.

Fig. 36 is a perspective view viewed from the rear side of the protective member of the rail guide of the rail guide device for the refrigerator according to the tenth embodiment of the present invention.

Fig. 37 is a sectional view showing a general view of a rail device for a refrigerator in accordance with an eleventh embodiment of the present invention.

Fig. 38 is a sectional view showing a general view of another rail device for a refrigerator in accordance with an eleventh embodiment of the present invention.

Fig. 39 is a perspective view showing a method of mounting a rail device in accordance with a twelfth embodiment of the present invention.

40 is a view showing a side section of a conventional refrigerator.

41 is an exploded view of a rail device 4031 in a conventional refrigerator 4051.

Fig. 42 is a front view showing a construction diagram of a rail device 4031 in a conventional refrigerator 4051.

REFERENCE POSITIONS ON THE DRAWINGS

40, 80, 81, 82, 83, 140, 200, 210, 400, 410, 440, 840: Rail guide

846: Rail guide guard

41, 84, 541: Bracket (fastener)

41a, 900, 902, 905: Rib (reinforcing part)

42, 86, 142, 201, 211: First rail

43, 43a, 85, 143, 203, 213: Second rail

43b: Top flange

43c: Base plate

43d: bottom flange

44, 44a, 144, 202, 212: Third rail guide

45, 145, 204, 631d: Bearing (moving element)

46, 146: Ball cage

48, 148, 205, 215: Holder element (auxiliary element)

51, 151, 500, 618, 700, 851: Refrigerator

52, 152, 570, 619, 770, 852: Thermally insulated housing

53, 153, 510, 625, 710, 853: Cold store

54, 154, 854: Ice making chamber

55, 155, 626, 855: Switchable camera

56, 156, 520, 627, 720, 856: Vegetable chamber

57, 157, 530, 628, 730, 857: Freezer

60a, 160a, 860a: Left door

60b, 160b, 860b: Right door

61, 62, 63, 64, 161, 162, 163, 164, 629, 630, 861, 862, 863, 864: Door

63a, 163a: Storage Tank

70, 170, 571, 620, 870: Inner housing

71, 171, 572, 621, 871: External Enclosure

72, 172, 573, 622, 872: Foamed insulation material

148a: Flange

148b: Fixing part of the auxiliary element

148c: Mounting part for rail guide

148d: Reinforcing Form

148e: Vertical Flange Part

148g: Bottom surface of the vertical flange portion

205a, 215a: Flange part

205e, 215e: Vertical Flange Part

PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION

The present invention is a refrigerator comprising a thermally insulated casing formed by an inner casing, an outer casing and foamed heat-insulating material filled between the inner casing and the outer casing, and a retractable type storage chamber, the storage chamber including a rail device therein containing a first rail guide, a second rail rail and a third rail rail, which are elongated, and supporting to move on hell and forward storage vessel, and wherein the rail device is provided with a portion for preventing the deformation of the rail guiding device. In addition, the third rail guide directly or indirectly supports the storage container and is made movable back and forth, whereby the rail guide device includes parts for preventing the rail guide device from lowering so as to be made so as to hardly open, when a force is applied to the rail device. Thus, even when the rail guide device in the refrigerator of the present invention fully supports the large-capacity storage chamber, deformation of the rail guide device is prevented, and therefore, good usability of the storage chamber is maintained.

In the refrigerator in accordance with the present invention, the second rail guide includes flanges that protrude on the right and left sides above and below in the longitudinal direction, the first rail guide includes flanges that protrude to a height that exceeds the height of the flange at the bottom the second flange on the right and left sides in the longitudinal direction, and is movably supported by the movable element, and the third rail guide is movably supported Nia flange at the top of the second guide rail by means of the movable member. In addition, the rail device is designed in such a way that the fastener is attached to the inner surface of the inner case, and, moreover, the storage container is directly or indirectly supported on the third rail and is movable back and forth, as well as a part for preventing lowering formed by connecting the flat portion of the fastener attached to the inner casing and the flat portion of the outer casing of the first rail in advance. Therefore, the first rail guide takes on a cross-sectional shape, which is hardly opened when a force is exerted on the rail device from a second rail guide that can be moved in the groove; even when the rail guide device fully supports the large-capacity storage chamber, deformation of the rail guide device is prevented, and therefore good usability of the storage chamber is maintained.

Furthermore, the first rail is symmetrical when viewed from the front, so that when the first rail is, for example, manufactured by roller forming sheet material, it is easy to produce the first rail with good accuracy.

In addition, since the first rail is different from the fastener, the length of the fastener in the depth direction can be determined regardless of the length of the first rail, whereby the length of the fastener is only the necessary length for attaching the rail to the inner the casing, thus the amount (length) of material required for the manufacture of the rail guide device can be reduced compared to Twomey for the conventional device.

In the refrigerator in accordance with the present invention, the first rail is connected to the fastener on the side of the first rail, whereby the first rail can be connected to the fastener without increasing the height of the entire rail, i.e. with the same height as the height of the rail guide device (traditional rail guide device) in which the shape of the fastener is formed, considering the height of the entire rail guide device as the height of the entire first rail guide.

Moreover, since the part in which the fastening element extends to the lower surface of the first rail is reduced, the amount (length) of material needed to make the connecting element can be reduced compared to the case when the connecting element is attached to the lower surface of the first rail guide rail.

In the refrigerator in accordance with the present invention, since the first rail is connected to the fastener in the lower surface of the fastener, the force is applied mainly in the vertical direction to the interface of the fastener and the first rail, so the reliability of the joint is improved. In addition, reliability is enhanced even with respect to strength in the state of having an extended rail guide device.

In the refrigerator in accordance with the present invention, the fastener has at least one bent portion and a reinforcing part connecting two surfaces that are provided with a bent portion and are not parallel. As a result, the amount of bending when the force is applied to the fastener is reduced, and the slope of the rail guide when the load is applied to the rail, is reduced compared to the case when the reinforcing portion is not provided.

In the refrigerator of the present invention, the second rail is larger than the predetermined size in the up and down directions, and the geometric moment of inertia in the cross section perpendicular to the longitudinal direction is larger than the predetermined value, whereby the size change the second rail rail in order to increase the geometric moment of inertia of the second rail rail, restrains the deformation of the second rail rail.

Furthermore, it is effective even when the fastener and the first rail are molded integrally, i.e. when the first rail is directly attached to the inner casing.

In the refrigerator in accordance with the present invention, the third rail is provided with flanges that place a flange between them at the top of the second rail and are directed downward in the longitudinal and right directions; the flange on the side of the inner surface of the right and left flanges is extended downward relative to the other flange. As a result, a change in the cross-sectional shape of the third rail rail in order to increase the geometric moment of inertia of the third rail rail, restrains the deformation of the third rail rail.

Furthermore, it is effective even when the fastener and the first rail are molded integrally, i.e. when the first rail is directly attached to the inner casing.

In the refrigerator of the present invention, at least one of the first rail and the third rail supports the second rail from four directions in a cross section perpendicular to the longitudinal direction, thereby supporting the second rail in a movable manner in the longitudinal direction. As a result, the strength of the connection portion of the second rail and the first rail or the third rail relative to the force directed towards the inside of the refrigerator is increased.

In the refrigerator in accordance with the present invention, the second rail guide includes flanges that protrude on the right and left sides above and below in the longitudinal direction, the first rail guide includes flanges that protrude to a height that exceeds the height of the flange at the bottom the second flange in one of the longitudinal directions, and is supported with the possibility of movement by means of a movable element, and the third rail guide supports with the possibility of movement of the flange to the top s portion of the second guide rail by means of the movable member. In addition, the rail device is designed so that the first rail is attached to the inner surface of the inner casing, and moreover, the storage container is directly or indirectly supported on the third rail and is movable back and forth, as well as a part for preventing lowering is larger in its size in vertical directions than a predetermined size, whereby the geometric moment of inertia in a cross section perpendicular to the longitudinal direction, greater than the set value. Thus, the geometric moment of inertia in the cross section perpendicular to the longitudinal direction is greater than the set value, and in the rail device, the first rail guide is attached to the inner surface of the inner case, and, moreover, the storage container is directly or indirectly supported on the third rail rail and is made movable back and forth, whereby the resizing of the second rail rail in order to increase the geometric moment of inertia the second rail, restrains the deformation of the second rail, even when it fully supports the large-capacity storage chamber, thus maintaining good usability of the storage chamber.

In the refrigerator in accordance with the present invention, the second rail guide includes flanges that protrude on the right and left sides above and below in the longitudinal direction, the first rail guide includes flanges that protrude to a height that exceeds the height of the flange at the bottom the second flange in one of the longitudinal directions, and is supported with the possibility of movement by means of a movable element, and the third rail guide supports with the possibility of movement of the flange to the top s portion of the second guide rail by means of the movable member. In addition, the rail device is designed so that the first rail is attached to the inner surface of the inner casing, and moreover, the storage container is directly or indirectly supported on the third rail and is movable back and forth, as well as a part for preventing lowering is made in such a way as to represent downward flanges on the right and left sides in the longitudinal direction, which support the flange of the third rail conductive flange at the top of the second rail and a flange on the inner surfaces of the right and left flanges is extended downward relative to the other flange. As a result, changing the cross-sectional shape of the third rail to increase the geometrical moment of inertia of the third rail, restrains the deformation of the third rail even when the large-capacity storage chamber is supported in a fully openable manner, thus maintaining good usability of the storage chamber.

In the refrigerator in accordance with the present invention, an auxiliary element for attaching the rail device to the inner casing is provided on the side opposite to the rail device, passing over the inner surface. In addition, the auxiliary element extends just below the lower surface of the first rail, thereby having a flange to contain deformation downward of the first rail. As a result, the shape of the auxiliary member for attaching the rail device to the inner body is thought out, thereby restraining the inclination and the like of the rail device when a load is applied to the rail device. In other words, the task of reinforcing the rail guide device can be further posed to the auxiliary element, which initially has the task of fixing the rail guide device.

In the refrigerator in accordance with the present invention, the length of each of the first rail, the second rail and the third rail is the length at which the edge remote inward of the storage container is located in front of the front of the door directly above the storage chamber when the storage container extended to the maximum extension position. As a result, even when the extension distance of the storage room is increased, the convenience of the storage room is maintained due to each of or a combination of a plurality of technical features that inhibit deformation of the rail rail of the refrigerator of the present invention.

In the refrigerator in accordance with the present invention, the first rail is connected to the fastener by spot welding. This provides the possibility of local welding, while temperature deformation (warping) due to welding of the rail guiding device is prevented compared with the case when welding is carried out in the longitudinal direction by a continuous seam, and good usability of the storage chamber is maintained even when the large storage chamber is fully supported in an open way.

In the refrigerator in accordance with the present invention, the second rail guide includes flanges that protrude in the right and left sides at the top and bottom in the longitudinal direction, the first rail guide attached to the inner surface of the inner case includes flanges that protrude to a height , which exceeds the height of the flange in the lower part of the second flange in one of the longitudinal directions, and is supported with the possibility of movement by means of a movable element, the third rail yuschaya movably supports the flange at the top of the second guide rail by means of the movable member and an auxiliary member for fixing the rail device to the inner housing is provided on the opposite side with respect to the rail guiding device, passing beyond the inner surface. In addition, the rail device is designed so that the first rail is attached to the inner surface of the inner casing, and, moreover, the storage container is directly or indirectly supported on the third rail and is movable back and forth, as well as in the part for to prevent lowering, the auxiliary element is placed on the side of the heat-insulating material of the inner case provided with the rail device, and, in addition, a fl the back portion, which extends at least to the central region of the lower surface of the first rail. As a result, in the lower part of the rail guide device, the central region with respect to the lower surface of the first rail guide is perceived by the auxiliary element, and the contact area of the auxiliary element with foaming and heat-insulating material becomes large, so that a deformation that tends to occur in the vertical direction of the rail guide device, can be prevented by resistance to foaming and thermal insulation material. Those. the strength of the material of the auxiliary element itself can be increased, and deformation with respect to the vertical direction in the foaming and heat-insulating material of the auxiliary element can be prevented by performing the shape of the auxiliary element for attaching the rail device to the inner casing, thereby preventing inclination relative to the vertical direction of the rail device, when attached to the rail load. In other words, the task of reinforcing the rail guide device can be further posed to the auxiliary element, which initially has the task of fixing the rail guide device.

In the refrigerator in accordance with the present invention, the upper surface of the flange portion of the auxiliary element directly makes contact with the lower surface of the inner case without heat-insulating material. This makes it possible to suppress the deformation of the rail guide device due to the load by means of an auxiliary element, which is a strong material without soft foaming and heat-insulating material, when the load is applied to the rail guide device, thus, the effect of stiffening the auxiliary element can be ensured.

Moreover, since the auxiliary element can be directly mounted on the surface of the inner case, the installation location of the auxiliary element is easily controlled, so that the auxiliary element can be securely installed in the desired predetermined location, and thus, the effect of stiffening the auxiliary element can definitely be obtained. .

In the refrigerator in accordance with the present invention, the lower surface of the first rail is in direct contact with the upper surface of the inner casing. As a result, when a load is applied to the rail device, if there is a space between the rear surface of the first rail and the upper surface of the inner case, the rail device continues to deform without encountering any obstacle. However, since the lower surface of the first rail is directly in contact with the upper surface of the inner casing, there is no space between the rear surface of the first rail and the upper surface of the inner casing, so that the deformation of the rail due to its load can be limited by an auxiliary element installed in the foam-forming and heat-insulating material of the inner case, thereby undoubtedly providing the effect of Denmark rigidity of the auxiliary member.

In the refrigerator in accordance with the present invention, the auxiliary element has a vertical flange portion that extends in the same direction as the direction of the force that is applied to the rail device when the sliding door is extended, from the lower surface side of the rail device. As a result, an increase in strength was obtained due to an increase in the axial transverse moment of inertia due to the shape of the auxiliary element, and the contact area with the foaming and heat-insulating material of the vertical flange part of the auxiliary element in the horizontal direction was increased. Essentially, deformation, which begins to move relative to the horizontal direction, in the vertical flange portion of the auxiliary element can be prevented by resistance from foaming and heat-insulating material. Those. the strength of the material of the auxiliary element itself can be increased, and deformation with respect to the horizontal direction in the foaming and heat-insulating material of the auxiliary element can be prevented by completing the shape of the auxiliary element for attaching the rail device to the inner casing. Therefore, tilting with respect to the horizontal direction of the rail guide device is prevented when a load is applied to the rail guide device.

In the refrigerator in accordance with the present invention, the auxiliary element is cast from a metal material. As a result, the strength required for the fastening part for the rail guide device housed in the auxiliary member is easily ensured, thus attaching the rail guide device, which is essentially used, can undoubtedly be realized. In other words, the auxiliary element, including both the attachment and the reinforcement of the rail guide device, can be cast in the form of a single element.

In the refrigerator in accordance with the present invention, the auxiliary element has a reinforcing shape in the bend portion between the two planes at an angle, whereby the deformation of the bend portion of the auxiliary element when a load is applied to the flange portion of the auxiliary element can be prevented by the shape of the auxiliary element itself, and the strength of the auxiliary element element can be increased, and deformation of the rail guide device can be prevented.

In the refrigerator in accordance with the present invention, the auxiliary element has a shape that can be used both on the right and left sides, so selective use of the auxiliary element is not required when the right and left auxiliary elements are installed in the inner case, convenience and ease of use can be improved, and the cost of the casting mold for casting the auxiliary member can be prevented.

In the refrigerator in accordance with the present invention, a constant distance is set between the lower surface of the vertical flange part and the inner case facing the lower surface of the vertical flange part. The deformation of the rail due to load affects the auxiliary member when a load is applied to the rail, and between the lower surface of the vertical flange portion of the auxiliary member that begins to deform in the same direction as the direction of the load applied to the rail and the internal the hull has a constant distance. Therefore, the rear surface of the vertical flange portion is not directly in contact with the inner housing, but foam-forming and heat-insulating material is present, and therefore, the surface shape of the inner housing can be kept good without causing damage such as a breakthrough of the inner housing near the lower surface of the vertical flange portion auxiliary element due to deformation of the auxiliary element.

In the refrigerator in accordance with the present invention, the vertical flange portion is inclined to the side opposite to the inside of the refrigerator. When a load is applied to the rail, the deformation of the rail due to the load also affects the auxiliary member, and the deformation of the vertical flange portion of the auxiliary member restrains its deformation to the inside of the refrigerator including the inner case. Specifically, in the direction of movement of the vertical flange portion of the auxiliary element, the inner case is not provided, but foam-forming and heat-insulating material is provided, and therefore, the surface shape of the inner case can be kept good without causing damage such as a breakthrough of the inner case near the end surface of the auxiliary element due to deformation of the auxiliary item.

In the refrigerator in accordance with the present invention, the length of each of the first rail, the second rail and the third rail is the length at which the edge remote inward of the storage container is located in front of the front of the door directly above the storage chamber when the storage container extended to the maximum extension position. As a result, even when the extension distance of the storage room is increased, deformation of the rail guide device of the refrigerator of the present invention is prevented, and thus, the convenience of the storage room is maintained.

The refrigerator in accordance with the present invention includes a thermally insulated casing containing an opening of the front part, including an inner casing, an outer casing and foam-forming and heat-insulating material filled between the inner casing and the outer casing, a retractable storage chamber formed inside the thermally insulated casing, a retractable door that freely and openly locks the opening of the front of the storage chamber, the first rail guide, the third rail guide and a second rail rail provided between the first rail rail and the third rail rail. In addition, the refrigerator includes a rail device that makes the container installed inside the storage chamber movable back and forth and in which a first rail, a third rail and a second rail are each supported by a rotating support member, the first rail is attached to the side wall of the inner casing, the first rail guide, the third rail guide and the second rail guide connected in advance, and the capacity Installed inside the storage room, made movable back and forth. Additionally, the end surface on the side of the storage chamber of the third rail rail comprises a rail guide protective element, whereby the rail guide protective element mounted on the end surface on the side of the storage chamber of the third rail rail protects the open part of the innermost part of the third rail rail (end surface on the side storage room) by selecting the second rail, even when the innermost part of the third rail Avaluyu (end surface from the side of the storage chamber) is located outside the portion of the front surface of the outer casing. Thus, the hand is prevented from making contact with the end surface of the third rail, the safety can be improved, and the safety in use and the dignity of the appearance can be maintained even when the large-capacity storage chamber is maintained in a fully openable manner.

In the refrigerator in accordance with the present invention, the rail guarding element is increased in its extension amount by tilting at the rear end, and the sliding door is extended to a position where the innermost part (from the storage chamber side) of the rail guarding element is outside the front portion surface of the outer casing. The finger can extend, similarly to extrusion, outward relative to the inclination due to the inclination, even if the finger is inserted into the gap formed between the innermost part of the rail guarding element and the front surface portion of the outer case, and therefore, safety can be improved when the sliding door is closed.

In the refrigerator in accordance with the present invention, the slope has an angle of 10 to 45 °, both inclusive. If the tilt angle of the tilt is too small, the tilt provided on the rail guiding element becomes large, and the size of the rail guiding element also becomes large, so the shape may not be made with the required size, and the strength is difficult to provide, so how geometric thickness is small at the end of the slope. In addition, on the contrary, if the angle of inclination is too large, the finger cannot be smoothly pushed out by the inclination when the finger is placed on the inside of the rail guard member. Therefore, the tilt angle is designed to be 10-45 °, both inclusive, whereby safety can be improved without the need for an excessively large protective element of the rail rail.

In the refrigerator in accordance with the present invention, the sliding door includes a door frame attached to the sliding door, the door frame being attached to the third rail and the rail protecting element is fixed to the end surface from the side of the door frame storage chamber. This makes it possible to fasten the rail guide protective element to the door frame, and during the manufacturing process, since the sliding door that mounts the door frame and the rail rail protective element can be connected to the rail device, thus it is possible to improve convenience and ease of use.

In the refrigerator in accordance with the present invention, the rail guide protector protects the fastening portion of the third rail and the door frame. Also, the contact of a hand or the like with the fastener is prevented by closing the fastener of the door frame and the third rail during opening and closing the retractable door, which can increase safety. In addition, the occurrence of corrosion on the end surface of the fastening part can also be prevented.

In the refrigerator in accordance with the present invention, due to the protective element of the rail, it is not necessary to carry out the process of removing streaks formed around the lifting eye for coating the door frame due to the protection of the lifting eye located in the door frame for applying the coating on the door frame. In addition, the occurrence of corrosion on the lifting eye for coating can also be limited.

In the refrigerator in accordance with the present invention, the protective element of the rail rail is made using a polymer material. This makes it possible to cast the protective element of the rail, even if the shape is complex. Its coloring is also light, and thus, a coating is not required, and a rounded shape can be made. Due to this, even if a finger or the like is in contact, the pain of its contact is alleviated, thereby increasing safety.

In the refrigerator in accordance with the present invention, the rail guard is made in the same color as that of the door frame, so that the rail rail can be installed without standing out.

In the refrigerator in accordance with the present invention, the upper surface of the rail rail protective element has substantially the same height as the upper surface of the door frame, whereby the rail rail protective element does not interfere with the installation of the container when the container is mounted on the door frame, thus there is the possibility of improving convenience. In addition, the upper surface of the rail rail protective element has substantially the same height as the upper surface of the door frame, and therefore, the container can also be mounted on the rail rail protective element, so the load of the container can be applied to the door the frame and the protective element of the rail with balance; as a result, the service life of the rail guide device can be increased.

In the refrigerator in accordance with the present invention, the length of each of the third rail and the first rail is the length at which the edge located inwardly in front of the container is located in front of the portion of the front surface of the outer case when the storage container is extended to the maximum extension position. As a result, the container can be easily removed and installed during removal and installation of the container, since the container does not collide with the door at the top.

In the refrigerator in accordance with the present invention, the rail guard is mounted and attached to the door frame, as if closing the door frame from above. As a result, the rail guide guard is easily installed during installation, and the rail guide guard is relatively easy to provide relative to the load applied from the top of the rail guide when the tank is attached to the rail guide or the like.

In the refrigerator in accordance with the present invention, a portion of the rail guide protective element is in contact with the third rail rail. As a result, the strength of the rail rail protective element can be provided relatively easily since the load applied from the top of the rail rail protective element can be supported by a third rail rail, which is a rigid body, when the container is attached to the rail rail protective element or the like.

In the refrigerator in accordance with the present invention, a rib is disposed within the protective element of the rail. As a result, the deformation of the rail guide protection element itself can be prevented, and also due to the rib, the strength of the rail protection element relative to the load applied from the top of the rail guide protection element when the container is attached to the rail protection element or the like can be relatively easily secured. .

In the refrigerator in accordance with the present invention, a plurality of engaging portions are provided in the rail rail protector that connect the rail rail protector to the door frame, thereby increasing the mounting strength of the rail rail protector, and the rail rail protector is hardly detached, even if loads are applied from all directions, thus, undoubtedly, it is possible to protect the end surface of the rail his device.

The rail device in accordance with the present invention is refrigerator-mounted, which comprises a thermally insulated body formed by an inner case, an outer case, heat-insulating material filled between the inner case and the outer case, and a retractable type storage chamber. In addition, the rail guide device supports, with the ability to move back and forth, a storage container forming a storage chamber. In addition, the rail device includes a fastener attached to the inner surface of the inner casing, and the first, second and third rail rails, which are elongated and arranged so that the longitudinal directions are the same. The second rail has flanges that protrude to the right and left, above and below relative to the longitudinal direction; the lower flange is supported to move in the longitudinal direction on the first rail; the first rail is connected to the fastener and has flanges protruding to a height that exceeds the height of the flange at the bottom of the second rail on the right and left sides in the longitudinal direction; and the third rail guide supports movably the flange at the top of the second rail rail in the longitudinal direction and supports the storage tank; as a result, the rail guide device is obtained as a rail guide device installed in various refrigerators.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are each set for the same constructions as in the traditional example or previously described embodiment, and detailed descriptions thereof are omitted. In addition, the present invention is not limited to this embodiment.

FIRST IMPLEMENTATION

A refrigerator in accordance with a first embodiment of the present invention will be described below with reference to the drawings. 1 is a front view of a refrigerator in accordance with a first embodiment of the present invention. As shown in figure 1, the refrigerator 51 is a refrigerator having double doors, hinged on the outer sides, respectively, and contains a storage chamber, divided into many chambers inside a thermally insulated body 52.

Specifically, starting from the top, a refrigerating chamber 53, an ice making chamber 54, a switching chamber 55 located next to the ice making chamber 54 and in which the temperature of the chamber can be controlled, a vegetable chamber 56 and a freezer 57 are provided as a storage chamber .

An open door is provided in the opening of each storage room, filled with foamed heat-insulating material, such as urethane. Specifically, on the cooling chamber 53, a left door 60a and a right door 60b are provided that open and close the opening of the insulated body 52.

In addition, a door 61, a door 62, a door 63 and a sliding type door 64 are provided on the ice producing chamber 54, the switching chamber 55, the vegetable chamber 56 and the freezing chamber 57, respectively.

Of the aforementioned chambers, storage chambers other than the refrigerating chamber 53 are retractable storage chambers.

In addition, as shown in FIG. 1, the heat-insulated body 52 is formed by insulated walls made by filling the foamed heat-insulating material 72 into the space formed by the inner body 70 made of a vacuum-molded polymeric substance, such as ABS, and the outer case 71 using a metal a material, for example a steel sheet with a protective coating.

A radiator (not shown) and a fan (not shown) are provided at the rear of the vegetable chamber 56 and the freezer 57. The radiator is driven by a compressor (not shown) located under the main body of the refrigerator 51, and the cooled air from the radiator is directed to each of the chambers. Moreover, for each of the storage chambers, a cooling process with a predetermined temperature is controlled.

FIG. 2 is a perspective view showing a state in which the vegetable chamber 56 is pulled out of the refrigerator 51 in accordance with the first embodiment.

FIG. 2 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with the present invention. As shown in FIG. 2, the vegetable chamber 56 is a retractable type storage chamber, and the storage container 63a forming the vegetable chamber 56 is configured to extend from and slide into the insulated body 52 by the rail guide 40.

Specifically, the storage container 63a is supported on both its right and left sides (corresponding to the front side and the back side in FIG. 2) of a third rail (upper rail) 44, which can be moved back and forth of the refrigerator 51 by second rail (intermediate rail) 43.

A second rail (intermediate rail) 43 is supported to move the first rail (cabinet rail) 42, not shown in FIG. 2. In addition, the bracket 41 is attached to the inner surface of the inner housing 70.

The edge of the third rail (upper rail) 44, which supports both the right and left sides of the storage container 63a, is connected to the door 63. Moreover, the maximum extension distance of the door 63 is the length at which the storage container 63a is fully open .

Those. the maximum extension distance of the door 63 is the length at which the end surface of the rear of the storage container 63a (which is on the left side of FIG. 2) is closer to the front than the front surfaces of the door 61 and the door 62, which are above the camera 56 for vegetables when the vegetable chamber 56 is fully open.

In this case, food can be easily placed in the back of the storage container 63a and taken from the back of the storage container 63a. In addition, the storage container 63a does not collide with the door 61 and the door 62 located on top when the storage container 63a is removed or installed. Therefore, the removal and installation of the storage container 63a can be easily carried out.

Similarly to the case of the vegetable chamber 56, the maximum extension distance is also determined for the freezer chamber 57, and the user can easily take out and install a storage container forming the freezer chamber 57.

The vegetable chamber 56 and the freezer 57 are extended to such positions by sliding the rail device 40.

FIG. 3 is a front view showing a construction diagram of a rail device of the first embodiment. As shown in FIG. 3, the rail device 40 is a device that supports a storage container forming a drawer type storage chamber such that the storage container can be moved back and forth and includes an arm 41, a first rail guide (rail guide cabinet) 42, a second rail rail (intermediate rail rail) 43 and a third rail rail (upper rail rail) 44.

The first rail (cabinet rail) 42, the second rail (intermediate rail) 43 and the third rail (upper rail) 44 have elongated shapes and are arranged so that their longitudinal directions are identical.

The bracket 41 is one example of a fastener in the refrigerator of the present invention. The bracket 41 is connected to the holder element 48 by means of a bolt (not shown), with the inner case 70 shown by a dashed line being placed between them. As a result, the rail device 40 is attached to the inner surface of the inner housing 70.

In addition, a rib 41a is provided on each of the two fold sections contained in the bracket 41, which connects two surfaces that are not parallel and are provided with a fold location located between them.

The rib 41a is one example of a reinforcing portion in the refrigerator of the present invention, and the bending strength of the bracket 41 is thereby enhanced.

Alternatively, the rib 41a can be integrally formed with the bracket 41, for example, by stamping the relief on the main part of the bracket 41. In addition, for example, an independently prepared rib 41a, as an alternative, can be welded to the bracket 41.

In addition, the bracket 41 combines the first rail 42 and the fastener, while forming the height of the rail 40 as the height of the first rail (cabinet rail) 42 (a traditional example), which forms the shape of the fastener, which is made as a whole with the first rail (cabinet rail) 42. As a result, with elements other than the rail device 40 remaining intact, it becomes possible to replace the traditional directional rail device. Those. it becomes easier to use elements interchangeably, apart from the rail device.

Specifically, in the case where the fastener is attached to the bottom surface of the first rail, the height of the entire rail is increased by the thickness of the sheet of the fastener; however, since the side surface of the first rail is connected to the fastener and the fastener is not located below the first rail, the first rail and the fastener can be connected having the height of the entire rail device as the height of the rail device having the formed form of the fastener in one piece with the first rail guide (rail guide device of the traditional example).

In addition, the amount (length) of material needed to make the bracket 41 can be reduced than for traditional brackets, compared with the case in which the bracket 41 extends under the first rail (cabinet rail) 42.

The holder element 48 is one example of an additional element in the refrigerator of the present invention and is an element for attaching the rail guide device 40 to the inner surface of the inner case 70.

As shown in FIG. 3, the holder member 48 has a flange provided extending just below the bottom surface of the first rail (cabinet rail) 42. As a result, the bending of the first rail (cabinet rail) 42 towards the lower side may be restrained.

Specifically, by including a flange extending at least to the central region of the lower surface of the first rail (cabinet rail) 42, the holder member 48 carries a central region related to the lower surface of the first rail (cabinet rail) 42 due to the fact that the holder element 48 is located under the first rail (cabinet rail) 42. In addition, due to the location of the holder element 48 on the side of the foamed thermal insulation material 72 and embedment of the holder element 48 into the foam insulation material 72, the contact area between the holder element 48 and the foam insulation material 72 is increased, and the rail device 40 is protected from bending deformation to its vertical direction due to the resistance of the foam insulation material 72. That is . by making the shape of the holder member 48 for attaching the rail device 40 to the inner case 70, as described above, the strength of the material of the holder member 48 can be increased, and the deformation of the holder member 48 to the vertical direction in the foam insulation material 72 is prevented; and it becomes possible to restrain the inclination of the rail device 40 to the vertical direction when a load is applied to the rail device 40, and as a result, the opening of the first rail (cabinet rail) 42 can be restrained. in addition to the task of attaching the rail guiding device 40, as originally posed to the holder element 48, another task of reinforcing the rail guiding device 40 can be additionally set.

Furthermore, due to the provision with a vertical flange portion extending in the same direction as the force exerted on the rail device 40 when the sliding door is extended from the lower surface side of the rail device 40, the holder member 48 is able to increase due to its shape resistance to the vertical transverse secondary moment, and, in addition, the contact area for the foamed thermal insulation material 72 and the vertical flange portion of the holder element 48 is increased. The deformation of the vertical flange portion, which increases when moving along the horizontal direction, can be prevented due to the contact resistance with the foamed thermal insulation material 72. That is, by making the shape of the holder element for attaching the rail device to the inner case, as described above, the strength of the material of the holder element can be increased, and the deformation of the holder element to the vertical direction in the foaming and heat-insulating material is prevented; and it becomes possible to restrain the inclination of the rail device to the horizontal direction when a load is applied to the rail device.

As indicated above, by performing the shape of the holder member 48 for attaching the rail device 40 to the inner housing 70, i.e. providing the holder member 48 from the side of the foamed heat-insulating material 72 of the inner housing 70 to which the rail device 40 is attached, and having a flange portion extending at least to the central region of the lower surface of the first rail (cabinet rail) 42 as parts to prevent lowering of the rail guide device, deformation, such as the inclination of the rail guide device 40, is prevented when the load is applied.

Those. in addition to the task of attaching the rail guiding device 40, as originally posed to the holder element 48, another task of reinforcing the rail guiding device 40 can be additionally set.

The first rail rail (cabinet rail) 42 is one example of the first rail in the refrigerator of the present invention, while having a side surface that makes contact with the bracket 41. Specifically, the bracket 41 and the first rail (cabinet rail) 42 are connected by a point by welding, and the bracket 41 and the first rail (cabinet rail) 42 correspond to the first conventional rail (fixed rail) 4031a (cm Fig. 42).

Specifically, the rail device 40 is formed by a flat portion of the bracket 41, which is stationary relative to the inner housing 70, in a certain way bonded to a flat portion on the outer periphery of the first rail (cabinet rail) 42. That is, the flat portion that forms the bracket 41 and the flat portion that forms the outer periphery of the first rail (cabinet rail) 42 are opposed to each other. The flat portion of the bracket 41 and the flat portion of the outer periphery of the first rail (cabinet rail) 42 are facing each other, and the edge of the bracket 41 is not connected, in an opposing arrangement, with the flat portion of the outer periphery of the first rail (cabinet rail) 42.

In addition, the bracket 41 is attached to the inner surface of the inner case 70, and the rail device 40 supports the storage container 63a in a movable manner in the back and forth direction directly or indirectly on the third rail (upper rail) 44.

As a consequence, the strength of the bracket 41 itself, which must be strengthened in its strength characteristic, can be easily increased. Specifically, its thickness of the material can be increased, and the material can be easily changed.

This spot welding is performed in three places at equal intervals. Specifically, spot welding is performed near the respective ends of the bracket 41 and the central region of the bracket 41, respectively.

Moreover, the first rail (cabinet rail) 42 has flanges extending towards the upward direction provided on the left and right sides, respectively, in its longitudinal direction (hereinafter corresponding to the vertical direction relative to the sheet surface of FIG. 3).

A second rail (intermediate rail) 43 is one example of a second rail in the refrigerator of the present invention. The second rail (intermediate rail) 43 has an I-beam vertical cross section in the longitudinal direction and a shape in which flanges are provided along the longitudinal direction in the upper part and lower part, which protrude to the right and left.

Among these upper and lower flanges, the lower flange is supported by the first rail (cabinet rail) 42 in a movable manner along the longitudinal direction.

Specifically, as shown in FIG. 3, the left and right flanges of the first rail (cabinet rail) 42 extend to a height that exceeds the lower flange of the second rail (intermediate rail) 43. As a result, the second rail (intermediate rail) ) 43 is supported in a mobile and stable manner.

The third rail (upper rail) 44 is one example of a third rail in the refrigerator of the present invention and is a rail for supporting a container forming a drawer type storage chamber, for example a storage container 63a, etc.

The third rail (upper rail) 44 has a cross-sectional shape similar to that of the first rail (cabinet rail) 42, and supports the upper flange of the second rail (intermediate rail) 43 in a movable manner in the longitudinal direction.

Specifically, each of the first rail (cabinet rail) 42 and the third rail (upper rail) 44 is movably supported by the second rail (intermediate rail) 43 by a plurality of bearings 45 held by ball bearings 46. Here, the bearing 45 is one example of a movable member in a refrigerator of the present invention.

Describing in more detail, among the upper and lower flanges of the second rail (intermediate rail) 43, the part having the lower flange as its center is supported by the first rail (cabinet rail) 42 by a plurality of bearings 45.

Moreover, the first rail (cabinet rail) 42 in the aforementioned cross-section supports the second rail (intermediate rail) 43 in three directions by the plurality of bearings 45, and thus supports the second rail (intermediate rail) 43 in a movable manner in the longitudinal direction.

Moreover, the third rail (upper rail) 44 supports the part having the upper flange as the center of the second rail (intermediate rail) 43 by the plurality of bearings 45. In addition, the third rail (upper rail) 44 in the aforementioned the cross-section supports the second rail (intermediate rail) 43 in three directions by the plurality of bearings 45 and thus supports the second rail (intermediate rail) 43 movable in the longitudinal direction.

According to the above combination of the first rail (cabinet rail) 42, the second rail (intermediate rail) 43 and the third rail (upper rail) 44, the second rail (intermediate rail) 43 can move along the first rail (cabinet rail) 42 in its longitudinal direction.

In addition, the third rail (upper rail) 44 can move along the second rail (intermediate rail) 43 in its longitudinal direction. Those. the third rail (upper rail) 44 can move along the first rail (cabinet rail) 42 in its longitudinal direction through the second rail (intermediate rail) 43.

In addition, when moving, as described above, the second rail (intermediate rail) 43 and the third rail (upper rail) 44 can move smoothly due to the rotation of the plurality of bearings 45.

FIG. 4 is a first perspective view showing an appearance of a rail device of the first embodiment. 5 is a second perspective view showing the appearance of the rail guide device of the first embodiment. As shown in FIGS. 4 and 5, the third rail (upper rail) 44 is moved relative to the first rail (cabinet rail) 42 through the second rail (intermediate rail) 43. That is, rail device 40 generally extends and slides.

Specifically, in the case of the vegetable chamber 56, by the user extending the door 63, the third rail rails (upper rail rails) 44 left and right are connected to the door 63.

As a result, as shown in FIG. 2, the storage container 63a supported on the third rail (upper rail) 44 extends outward from the heat insulated body 52. That is, vegetable chamber 56 is fully open.

Each of the lengths of the first rail (cabinet rail) 42, the second rail (intermediate rail) 43, and the third rail (upper rail) 44 is a length at which the edge of the rear of the storage container 63a is closer to the front than the front surface of the door above the vegetable chamber 56 when the storage container 63a is extended to its maximum extension position.

As mentioned above, in the refrigerator 51 of this embodiment, in which the vegetable chamber 56 for the drawer type storage chamber can be fully opened, the rail device 40 does not lose its usability, for example, its smooth movement, etc., according to various technical features, contained in it.

Specifically, as shown in FIG. 3, the right and left flanges of the first rail (cabinet rail) 42 are both projected to a height that exceeds the lower flange of the second rail (intermediate rail) 43.

Those. the vertical cross section in the longitudinal direction of the first rail (cabinet rail) 42 is substantially symmetrical.

Moreover, the first rail rail (rail rail cabinet) 42 is connected on the surface with the bracket 41 attached to the inner housing 70.

Because of this, compared with the traditional first rail (fixed rail) 4031a, as shown in FIG. 42, since the vertical cross section in the longitudinal direction of the first rail (cabinet rail) 42 is essentially symmetrical, the load on the first rail (cabinet rail) 42 from the second rail (intermediate rail) 43 is evenly applied to the left and right sides, and thus a prize nak, consisting in the difficulty of opening the load having a vector in the direction inward of the chamber.

In addition, the load applied to the first rail (cabinet rail) 42 is transmitted to the bracket 41 connected to the first rail (cabinet rail) 42 by spot welding.

However, as shown in FIG. 3 and FIG. 4, a plurality of ribs 41a are provided in the fold portion of the bracket 41. Therefore, the amount of bending with respect to the same load is kept small compared to the case without rib 41a.

In addition, as shown in FIG. 3, a part of the part of the holder member 48, which is bent into the inside of the chamber, extends under the first rail (cabinet rail) 42.

As a result of this, the amount of inclination of the rail guide device 40 inside the chamber and the amount of bending in the perpendicular direction, etc. held back. The length of the portion of the holder member 48 bent into the interior of the chamber is preferably a length that extends beyond the center of the first rail (cabinet rail) 42 to the right and left.

Moreover, since the first rail (cabinet rail) 42 is substantially symmetrical, it is suitable for roll forming. Those. manufacture with high precision can easily be carried out.

The joint of the first rail guide (rail rail of the cabinet) 42 and the bracket 41 is welded by dots and, thus, partially welded. Compared with the case of sequential welding in the longitudinal direction, deformation (warping) in the longitudinal direction in the rail device caused by heating during welding is suppressed, and even in the case of supporting the storage chamber with a large opening volume, the usability of the storage chamber is maintained.

Those. in the first embodiment of the embodiments, by performing the part to prevent the rail device from lowering by connecting in a predetermined manner a flat portion of the bracket 41 attached to the inner case 70 and a flat portion of the first rail (cabinet rail) 42, the first rail ( rail rail of the cabinet) 42 comes to the presence of a cross-sectional shape, which is unlikely to open when the force is applied to the first rails second rail (cabinet rail) 42 via the second rail (intermediate rail) 43, which is arranged movably in the recess. Even if a storage container with a large volume is fully openable, deformation of the rail guide device is prevented, and the usability of the storage room is maintained.

Moreover, since the first rail (cabinet rail) 42 is symmetrical when viewed from the front, it can easily be manufactured with high accuracy, for example, using roll profiling of sheet material to produce the first rail (cabinet rail) 42.

Moreover, since the first rail (cabinet rail) 42 and the bracket 41 are independent elements, the length of the bracket 41 in the depth direction can be determined without matching the length of the first rail (cabinet rail) 42; and the length of the bracket 41 is sufficient to be quite large for attaching the rail guiding device 40 to the inner casing, and the quantity (length) of material needed to manufacture the rail guiding device 40 can be reduced in comparison with conventional rail guiding devices.

As mentioned above, due to the fact that both of the two flanges of the first rail (cabinet rail) 42, which place the second rail (intermediate rail) 43 between them, are higher than the predetermined height, the rib 41a is formed in the fold portion and has a place in which the holder member 48 supports the first rail (cabinet rail) 42 from below, deformation of the rail device 40, such as tilting, bending or shifting the rails, is prevented of the guide device 40.

As a result, even when a large amount of food, etc. stored in a vegetable chamber 56 having a large volume and capable of fully opening, as shown in FIG. 2, the smoothness of the extension or retraction of the vegetable chamber 56 is not lost. Moreover, the user can easily place and take food products and can easily take out and install the storage container 63a for cleaning the storage container 63a, etc.

Moreover, the rail guide device of the freezer chamber 57 may use a design similar to that of the rail guide device of the vegetable chamber 56.

As mentioned above, the refrigerator 51 of the first embodiment of the present embodiments is a refrigerator provided with extendable storage chambers, and does not lose its usability even with large storage chambers.

In addition, the first rail (cabinet rail) 42 is an independent element from the bracket 41, which attaches the rail device 40 to the inner housing 70. Therefore, it is sufficient that the bracket 41 has only the length necessary for attaching the rail device 40 to the inner the housing 70. As a result, a preferred effect can be obtained that the amount of material required for the rail guide device 40 is reduced.

In the first embodiment of the present embodiments, the joint of the first rail (cabinet rail) 42 and the bracket 41 is welded with dots, however, they can be connected in series in the longitudinal direction by electric arc welding, etc.

In addition, due to the presence of the upper surface of the flange portion of the holder member 48 and the lower surface of the inner case 70 in direct contact without any heat-insulating material between them, when a load is applied to the rail device 40, deformation of the rail device 40 from load can be prevented by the element 48 of the holder, which is made of rigid material, without the presence of soft foam heat-insulating material 72 placed between them, and thus esomnenno may be obtained by amplification effect of the holder element 48.

In addition, since the holder member 48 can be attached directly to the surface of the inner case, it becomes easier to control the attachment position of the holder member 48. The holder member 48 can be firmly attached at a predetermined location, and, of course, the reinforcing effect of the holder member 48 can be obtained.

In addition, due to the lower surface of the first rail (cabinet rail) 42 being in direct contact with the upper surface of the inner housing 70, when a load is applied to the rail device 40, if between the bottom surface of the first rail (cabinet rail) 42 and there is space on the upper surface of the inner case 70, the rail device will continue to deform without any obstruction to this. There is no space between the upper surface of the inner casing 70 and the lower surface of the first rail (cabinet rail) 42 due to the direct contact of the upper surface of the inner casing 70 and the lower surface of the first rail (cabinet rail) 42, and it becomes possible to suppress the deformation of the rail the device 40 from the above load by means of the element 48 of the holder, mounted in a foamed insulating m material 72 of the inner case 70. Undoubtedly, a reinforcing effect of the holder member 48 can be obtained.

Although there may be a case in which the lower surface of the first rail (cabinet rail) 42 and the upper surface of the inner casing 70 are not necessarily in direct contact due to the inconsistency of the assembly process of the rail device and product inconsistency if there is a gap between the lower surface of the first rail (rail rail of the cabinet) 42 and the upper surface of the inner housing 70 is equal to or less than 1 mm, compared with the implementation i direct contact, the deterioration of the amplification effect of the holder element 48 is small; with a gap between the lower surface of the first rail (cabinet rail) 42 and the upper surface of the inner housing 70 equal to or less than 1 mm, almost the same effective effect can be obtained as in direct contact.

Moreover, the rail guide device 40 in accordance with the first embodiment shown in FIG. 3-5, is one example of a rail guide device that can maintain the usability of the storage chamber even when the storage chamber is large and extends to fully open.

Note that the rail guide structure of the present invention is not limited to refrigerators; it can be applied to anything with a retractable mechanism, for example, but is not limited to a kitchen complex, a cupboard, a dishwasher and a desk.

In the first embodiment, the edge portion of the third rail (upper rail) 44 is connected to the door 63, and the storage container 63a is supported by this third rail (upper rail) 44. That is, the storage container 63a is directly supported by the third rail (upper rail) 44.

However, the storage container 63a may, for example, be supported by a door frame (not shown) that is connected to the door 63. That is, the storage container 63a may be indirectly supported by a third rail (upper rail) 44. This door frame is made of a metal material, such as steel, and is rigidly connected substantially vertically to door 63 using screws and the like (not shown), with the surface of the door 63 from the side of the storage room. Moreover, the door frame is connected to the third rail (upper rail) 44.

Note that the storage container 63a indirectly supported by the third rail (upper rail) 44 through this door frame is similarly applied to the second embodiment to be described later.

In a storage chamber having a door for extracting and storing stored products that supports a drawer type, traditionally, in order to provide the user with a certain degree of satisfaction regarding easy loading and unloading of stored products and easy viewing of the inside of the container, the extension length is typically determined in accordance with ease of use. In recent years, in the case of using a left-luggage office, such as a vegetable chamber, in addition to a situation in which the stored amount of vegetables increases due to the user's preference for a healthy diet, due to an additional increase in the number of bottle drinks due to the transfer of heavy bottle drinks from the refrigerator to the chamber for vegetables, a large amount of load may be applied to the container for storing the vegetable chamber. In this circumstance, if the extension length is set large for the drawer type in accordance with the usability, as indicated above, the load applied to the rail guide element, which ultimately supports the storage container, becomes large, and there is a premise, which requires a rail device with high resistance to load.

This also applies to a freezer in which a large amount of food purchased at the same time is frozen.

In the present invention, in order to be able to remove the container and wash it at any time in the use position, which is identical to the state of normal use when removing and placing the stored products, this requires a constructive decision regarding the ratio of dimensions in the forward and backward directions of the refrigerator main body, by which the container can be extended to a position in which the container can be removed by the user in the upward direction with one pulling action (once) of the rails second guide device with a large load resistance and a high precision which can withstand a state in which the extension length is large, fixation and attachment scheme with less variability to the refrigerator main body and the door, which increases the benefit of the rail guiding device. The present invention provides a mounting scheme for a drawer type rail device for a refrigerator that can comprehensively solve a technical problem.

A refrigerator in accordance with a first embodiment of the present invention will be described in more detail below with reference to the drawings.

6 is a sectional side view of a refrigerator in accordance with a first embodiment of the present invention. 7 is a front sectional view of a refrigerator in accordance with a first embodiment of the present invention. Fig. 8 is an exploded view of a refrigerator in accordance with a first embodiment of the present invention. 9 is an exploded view of a rail guide device of a first embodiment of the present invention. 10 is a front view showing a schematic structure of a rail device of the first embodiment of the present invention.

In FIG. 6-10, the heat-insulated body 619 of the refrigerator 618 has a foamed heat-insulating material 622, filled between the inner case 620 and the outer case 621, contains a front opening 619a and forms, starting from its upper part, a cooling chamber 625, a switching chamber 626, a vegetable chamber 627 and freezer 628 by means of partition walls 623, 623a, 624.

Moreover, both side surfaces of the partition wall 624 contain an open part 624a, and, inside the partition wall 624, the foamed heat-insulating material 622 is filled there, similarly to the heat-insulated body 619.

Moreover, with a partition wall 624 located between the chambers, different temperature ranges are set above and below the partition wall 624; for example, a vegetable chamber 627 located above the partition wall 624 has a cooling temperature of about 5 ° C, a freezer 628 has a cooling temperature of about -20 ° C, which is a range of freezing temperatures.

The vegetable chamber 627 and the freezer 628 are retractable type storage chambers having a front opening 619a with a retractable vegetable chamber door 629 and a sliding door 630 of the freezer, respectively. Moreover, the vegetable chamber 627, the retractable vegetable chamber door 629, and the freezer chamber sliding door 630 are each capable of moving back and forth due to the respective connection by the rail guide element 631. Moreover, the switching chamber 626 is also a retractable type storage chamber.

Moreover, the upper end part of the retractable door 629 of the vegetable chamber is set to be equal to or less than 1000 mm, which corresponds to the height of a person’s elbow from the floor surface.

The rail element 631 is formed by a first rail (fixed rail) 631a, a third rail (moving rail) 631b, a second rail (middle movable rail) 631c provided between the first rail (fixed rail and third rail) 631a a guide (sliding rail) 631b, and a plurality of bearings 631d, which is a rotating support member that provides connects the second rail (middle movable rail) 631c, the first rail (fixed rail) 631a, and the third rail (movable rail) 631b. Moreover, in a state in which the first rail (fixed rail) 631a, the third rail (movable rail) 631b, the second rail (middle movable rail) 631c and the bearings 631d are pre-assembled, the first rail (fixed rail) rail) 631a is attached to both side walls of the inner casing 620, and a third rail (movable rail) 631b is connected to the cam sliding door 629 ry for vegetables and sliding door of the freezing chamber 630 provided above and below the partition wall 624.

Moreover, the capacity 632 of the respective storage room is supported by a third rail (moving rail) 631b of the rail device 631 after attaching the rail device 631 to the inner housing 620, and simultaneously moving the sliding door of the storage room along the front and back directions moves together with the third rail (moving rail) 631b back and forth and, moreover, is designed so that the tank 632 can be to pull upwardly, at least when the sliding door, each chamber is completely open.

The opening process of this retractable type door allows it to be extended to the maximum extension position with a single pulling action by the user. Although not shown, a rail device 631 may be provided on the partition wall 624.

Moreover, the rail device 631 formed by the first rail (fixed rail) 631a, the third rail (moving rail) 631b, and the second rail (middle movable rail) 631c having bearings 631d located between the first rail ( the fixed rail) 631a and the third rail (the moving rail) 631b, assembled in advance. Through the use of a high precision rail, assembled in a specific way, the gap between the rail can be set to its minimum.

Moreover, the horizontal depth (size P) of the container 632 is set greater than the vertical depth (size H), and the extension length (size L) of the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer is set greater than the depth (size P) capacity 632.

Moreover, when the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer are open to their maximum, the inner surface wall at the rear of the container 632 (plane c) is set closer to the front than the front opening 619a, i.e. plane of the front opening (plane a) of the insulated body 619.

Moreover, with respect to the size in depth (size M) of the heat-insulated body 619, the depth (size P) of the container 632 provided in the vegetable chamber 627 is about 60% and is a retractable type storage chamber having a long length in the direction depth.

Moreover, the vegetable chamber 627 is the largest storage chamber among a plurality of retractable storage chambers.

In addition, in order to accomplish the above closing / opening the door, the total length (dimension D) of the third rail (moving rail) 631b of the rail device 631 is set to be larger than the total length (size E) of the first rail (fixed rail) 631a.

Moreover, the total length (size F) of the second rail (middle movable rail) 631c located between the first rail (fixed rail) 631a and the third rail (movable rail) 631b with bearings 631d is essentially the same as the total length of the first rail (fixed rail) 631a (dimension E). In addition, when the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer are closed, the distal ends of the first rail (fixed rail) 631a and the third rail (moving rail) 631b are essentially in the same plane , and the rear ends of the third rail (movable rail) 631b and the second rail (middle movable rail) 631c are essentially in the same plane awns. In addition, when the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer are fully open, the second rail (middle movable rail) 631c is slidably moved so that the remote end of the first rail (fixed rail) 631a is essentially in the same position as the rear end of the third rail (movable rail) 631b and the alignment length of the second rail (middle movable rail oic rail) 631c, which is aligned with the first rail (fixed rail) 631a and third rail (moving rail) 631b respectively have substantially the same magnitude.

Note that the left and right rail device 631, mounted on the surfaces of both side walls of the inner housing 620, respectively, has a symmetrical shape with respect to the left and right sides, and due to the provision of both left and right sides, excellent mobility is realized.

Moreover, in the upper part of the container 632 of the freezer 628, a container 632a for small items is provided, which is less deep than the container 632, and this makes it possible to separately store food.

Moreover, the first rail guides (fixed rail guides) 631a of the rail guide device 631, pairing on the left and right sides, are limited relative to their attachment positions in the inner housing 620 by a connecting member 633, which is an element for limiting the position.

The connecting element 633 includes a horizontal section 633a and vertical sections 633b provided at the respective ends of the horizontal section 633a, and has an H-shape in its cross section. The horizontal portion 633a is secured by being placed between the upper partition wall 624b and the lower partition wall 624c inside the partition wall 624, and the vertical sections 633b protrude from the open part 624a of the partition wall 624 to the outside of the partition wall 624 and are located on the sides of the inner casing 620 from which the foamed thermal insulation is filled material 622; therefore, the connecting element 633 has a structure that is not open inside the corresponding storage chamber.

Moreover, both ends of each vertical portion 633b extend up and down to approximately the central region of the vegetable chamber 627 and the freezer 628. The first rail guides (fixed rail guides) 631a of the rail guide device 631 on the left and right sides in the corresponding storage chamber attached to the fastening parts 633c (not shown) of the vertical sections 633b, and at least the fastening parts 633c of the vertical sections 633b are in contact with the surface of the inner housing 620, with the side of which foam insulation material 622 was filled. In addition, vertical portions 633b on the left and right sides are provided with holes 633d.

Moreover, in the case when the connecting element 633 becomes large, it can be divided into many sections front and rear, and each may include a horizontal section 633a, vertical sections 633b and fixing parts 633c and further include holes 633d if necessary; Thus, the same effect can be obtained as in the case of the execution of the connecting element 633 as a single unit. Furthermore, bearings 631d simply need to be a rotating support element, and, alternatively, a roller, etc. may be used.

Regarding the refrigerator made as described above, its operation and operational effect will be described below.

First, when each of the sliding door of the storage chambers extends forward, the third rail (moving rail) 631b and the second rail (middle movable rail) 631c of the rail guide 631 provided on each side of the respective storage chamber move smoothly to the front side by rotation of the bearings 631d.

Accordingly, the container 632 supported by the rail device 631 extends forward, and the refrigerated products stored in the container 632 can be removed and new refrigerated products can be stored therein.

As mentioned above, by attaching a high precision rail device 631, which is in a state of having a first rail (fixed rail) 631a and a third rail (moving rail) 631b assembled in advance on the surfaces of both side walls of the inner case 620, the gap between the first rail (fixed rail) 631a and the third rail (moving rail) 631b may be full of small; and a high quality drawer with less instability can be provided. In addition, by making the clearance small, the inconstancy of the attachment can also be made small, thus undesirable occurrence conditions, for example, tilting due to poor quality of attachment of the sliding door and uneven intervals with respect to other sliding doors, can be prevented. These effects are more noticeable when the extension distance of the rail guide 631 is larger. As in the case of a retractable type storage chamber in the first embodiment, when there is a large extension distance, in which the surface of the inner wall (plane c) of the container 632 in the rear is closer to the front than the plane of the front opening (plane a) of the heat-insulated housing 619 when opened to its maximum, when the moving rail and the fixed rail are an independent device, as described in the prior art, and rel sovaya guide which inserts movable guide rail provided on the door side into the groove of the stationary guide rail provided on the side of the insulated housing from the rear side, if the clearance between the guide rail during insertion is small, insertion of the rail becomes extremely difficult. Thus, the gap between the rail guides will inevitably have to be made large.

Thus, in the case of using independent rail guides, as in the prior art, the inconstancy of attachment becomes large due to the fact that the gap between the rail guides is large; and, in addition, as a result of undesirable occurrence conditions, for example, tilting due to poor quality of the sliding door attachment and unequal intervals with respect to other sliding doors, a biased load is created in the rail guides with this unstable section as the center. Interconnected are the deformations of the rail guides and the attachment surface due to this displaced load, and the use for a retractable type storage chamber in which a large load is applied from a retractable type door having a large extension distance, as in the first embodiment, was difficult. However, due to the presence of a high precision rail device 631, which is in a state of having a first rail (fixed rail) 631a and a third rail (moving rail) 631b assembled in advance, sufficient reliability can be ensured, even in camera applications storage having a long extension length.

Moreover, in the first embodiment, in the maximum extension position of the vegetable chamber 627, which is a retractable type storage chamber having the largest capacity among a plurality of retractable type storage chambers contained in a heat-insulated housing 619, the surface of the inner wall (plane c) of the container 632 in the rear, it is closer to the front than the plane of the front opening (plane a) of the heat-insulated body 619.

As a result, even in a retractable type storage room to which a large load is applied from the retractable type door due to storage mass becoming large due to possessing the largest capacity, the occurrence of an offset load created in rail guides with an unstable center section is prevented , and deformation of the rail guides and the attachment surface due to this displaced load, etc. can be reduced. The opening of the upper side of the container when opening the sliding door can be maximized without compromising the reliability of the refrigerator, and the ease of removing food from the container and the ease of removing and installing the container itself can be increased.

Moreover, in the first embodiment, with respect to the horizontal depth size (size M) of the heat-insulated body 619, the horizontal depth (size P) of the container 632 of the vegetable chamber 627 is about 60% and is a retractable type storage chamber having a large horizontal depth.

Because of this, even in a retractable type storage room having a large horizontal depth, for which it has traditionally been difficult to increase its extension length, thanks to the use of a high precision rail device 631, which is in a state of having a first rail (fixed rail) 631a and a third rail (movable rail) 631b assembled in advance, the container 632 provided in the drawer type storage chamber can be smoothly extended to its back. Therefore, for the user, the capacity of the refrigerator can be increased, and a refrigerator with convenience in use can be provided.

Note that when the ratio of the horizontal depth (size P) of the container 632 contained in the vegetable chamber 627 to the horizontal depth size (size M) of the thermally insulated body 619 is approximately in the range of equal to or greater than 55% and equal to or less than 90% , there is a drawer type container having a large horizontal depth, and due to the opening of the top side of the container in this range for a long extension length, the usability is significantly increased compared to traditional refrigerators ikami.

Moreover, in refrigerators with the above ratio exceeding 70%, a narrow refrigerator can be easily implemented with elements of the freezing cycle, such as a compressor, radiator and evaporator, not located behind the retractable storage chamber, or, even with the above located elements, the distinction can be easily implemented in relation to traditional refrigerators.

Moreover, in refrigerators with the above ratio not exceeding 80%, the design related to providing the capacity of the retractable type of reinforcement against load, and the design of the rail guides can be in a relatively reasonable range and can be carried out with a small burden of expense.

In addition, the vegetable chamber 627, which is a retractable type storage chamber, can be extended to its maximum extension position by one pulling action performed by the user.

Accordingly, since the user can slide the vegetable chamber 627 to the maximum extension position with one pulling action, it can be gently extended to the maximum extension position with one hand, for example, while holding products to be stored in the refrigerator, and a refrigerator can be provided. which can be easily used.

Moreover, by maintaining between the first rail (fixed rail) 631a and the third rail (moving rail) 631b by bearings 631d, which are a rotating support member, even when the load is applied to the container 632, a third rail (moving rail) rail) 631b can move smoothly, and thereby the working force for extension can be reduced, and ease of use can be improved.

Moreover, due to the possibility of maintaining dimensions in width or degrees of parallelism of the pair of rail guide device 631 on the left and right sides, as defined by restricting the attachment positions of the first rail guides (fixed rail guides) 631a of the rail guide device 631 by the connecting member 633 and containing change dimensions in a thermally insulated housing 619 by means of a connecting element 633, the resizing of which is caused by thermal compression, etc. when cooled after filling with foamed heat-insulating material 622, identical to the technical requirement, in which the rail device 631 having a gap between the first rail (fixed rail) 631a and the third rail (moving rail) 631b, set small, assembled in advance, attached on the surfaces of both side walls of the inner casing 620, dimensional accuracy between a pair of left and right rail guides 631 may hold high. Because of this, the ease of the process of extending the container 632 can be increased by means of a connecting element 633, which is an element to limit the position. In addition, operational reliability can be ensured over a long period of time.

Moreover, due to the content of the second rail (middle movable rail) 631c and the total length (size D) of the third rail (moving rail) 631b of the rail device 631 being larger than the total length of the first rail (fixed rail) 631a (size E), when the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer are open to their maximum, the extension length (size L) can be set longer than horizontally I depth (dimension P) container 632 and the internal wall face (plane c) in the rear portion of the container 632 may be located closer to the front than the front opening plane (a plane) insulated housing 619.

Therefore, when using the vegetable chamber 627 and the freezer 628, containers 632 moving in cooperation with the sliding door 629 of the vegetable chamber and the sliding door 630 of the freezer can be extended to their rear parts, and a full overview of the containers 32 to their backs. Losses due to forgetting to use refrigerated products in containers 632 can be prevented, and it becomes easy to remove and install the container 632 on the rail device 631, therefore, the usability can be improved.

Moreover, in the first embodiment, since the extension length of the vegetable chamber 627, which is a drawer type storage chamber, is large, in the maximum extension position, the container 632 provided in the vegetable chamber 627 can be pulled out by lifting up along a substantially vertical direction.

As a result of this, the container can be easily removed and installed when the user removes the container when cleaning the container, etc., convenience in using the user to keep the refrigerator clean, in which food is stored and which stains easily adhere to, etc. can be greatly enhanced.

Moreover, in the first embodiment, in the maximum extension position of the vegetable chamber 627, which is a retractable type storage chamber having the largest capacity among a plurality of retractable type storage chambers contained in a heat-insulated housing 619, the surface of the inner wall (plane c) of the container 632 in the back is closer to the front than the plane of the front opening (plane a) of the heat-insulated body 619, and thus, it is possible to enjoy the ease of product extraction capacity and ease of removal and installation of the container 632. However, among the many retractable storage chambers, such a design may be comprised of at least a retractable storage chamber that requires this effect most, and there may be a difference in use with respect to the retractable storage chambers, which do not necessarily require this capacity, then in this case a rational design can be chosen for a refrigerator having a plurality of retractable storage chambers. For example, in a retractable type vessel, which is relatively compact and has a small capacity, the need for such a design becomes small; and in the case where the door located directly above is not a sliding door, but is a hinged door of a pivotable type, in a state in which this upper door is open, the container can be removed and installed relatively easily. When striving for equilibrium with the possibilities of removal and installation, even with a container that does not have the above construction, in this connection not so much inconvenience can be obtained.

Moreover, in the first embodiment, in the maximum extension position of the vegetable chamber 627, which is a retractable type storage chamber having the largest capacity among a plurality of retractable type storage chambers contained in a heat-insulated housing 619, the surface of the inner wall (plane c) of the container 632 in the rear, it is closer to the front than the plane of the front opening (plane a) of the heat-insulated body 619. However, more preferably, as shown in FIG. 6, in the max. the wide extension of the vegetable chamber 627, which is a retractable storage chamber, due to the location of the rear end surface of the container 632 closer to the front than the front surface (plane b) of the door provided at the storage chamber located above and next to the retractable storage chamber such as a door and the like, will not be in the upper part of the container when the user removes and places the stored products in and out of the vegetable chamber 627, thus ease of product extraction The power supply from capacity 632 can be further enhanced.

Moreover, when the container 632 is removed so that the user can clean the container 632 and the like, the container 632 can be easily removed and installed simply by lifting the container 632 up without any difficulty, and it is convenient for the user to keep the refrigerator clean , in which food is stored and to which spots easily adhere, etc., can be significantly increased.

Moreover, in the upper part of the container 632 of the freezer 628, a container 632a for small items is provided, which is less deep than the container 632; and this provides the possibility of separate storage of food. Ease of use is further enhanced.

By setting the relative position of the inner wall surface at the rear of this shallow container 632a for small objects, the front opening plane (plane a) of the heat-insulated casing 619 and the front surface (plane b) of the door with the same placement as the container 632 between the rear end surface and the upper part, for shallow capacity 632a for small items can be obtained identical work and effect.

Moreover, since the upper end portion of the retractable door of the vegetable chamber 629 is set equal to or less than 1000 mm, which is lower than the location of the human elbow, food can be easily placed and taken from food in the container 632.

Moreover, by ensuring that the connecting member 633 is not open inside the corresponding chamber as compared with the case in which the connecting member 633 is provided in the corresponding chamber, a decrease in capacity can be prevented.

Moreover, injury from the edge of the end surface of the connecting element 633 made of metal material can be prevented, and thus safety can be improved; in addition, edge removal processing can be omitted and costs can be reduced.

Moreover, since the connecting element 633 connecting the left and right first rail guides (fixed rail guides) 631a is embedded in the foamed heat-insulating material 622 of the heat-insulated casing 619, condensation and freezing of the connecting element 633 can be prevented when using the refrigerator 618, and, moreover, since the connecting element 633 does not make contact with air, the corrosion resistance of the connecting element 633 can be increased, thus, since roziynaya processing can also be reduced, and costs can be reduced.

Moreover, due to the presence of foamed heat-insulating material 622 around the connecting element 633, the attachment strength of the connecting element 633 is increased, and the reliability of the positional limitation and the attachment strength of the rail guide device 631 can be improved.

Moreover, by providing a partition wall 624 that separates the thermally insulated body 619 into a vegetable chamber 627 and a freezer 628, and a connecting member 633 for connecting the left and right first rail tracks (fixed rail guides) 631a to be placed inside the partition wall 624, a decrease in capacity due to the placement of the connecting element 633 in the case of a plurality of storage spaces can be prevented.

Moreover, due to the presence of the rail guide device 631, respectively, for the vegetable chamber 627 and the freezer 628, which are located next to above and below, and the fastening of the first rail guides (fixed rail guides) 631a of each rail guide device 631 as a whole by the connecting element 633, the ease of operation of multiple storage chambers can be simultaneously enhanced.

Moreover, by making the connecting element 633 having vertical sections 633b and having an H-shape in its cross section, and securing the first rail guides (fixed rail guides) 631a of the rail guide device 631 of the vegetable chamber 627 and the freezer 628 as a whole which are located near the top and bottom of the vertical sections 633b, costs can be reduced by reducing the number of elements by attaching a plurality of fastening first rails new guides (fixed rail guides) 631a of the rail guide device 631 to one connecting element 633.

Moreover, in the first embodiment, the connecting element 633 is H-shaped due to the presence of vertical sections 633b at both ends and a horizontal section 633a between them. However, in the case where the connecting member 633 having holes 633d on the right and left vertical sections 633b becomes large, it can be divided into many sections front and rear, and each may include a horizontal section 633a, vertical sections 633b, and mounting parts 633c and further include holes 633d, if necessary; Thus, the same effect can be obtained as in the case of the execution of the connecting element 633 as a single unit.

Moreover, the horizontal portion 633a of the connecting element 633 may not necessarily be necessary depending on the design of the refrigerator; for example, the connecting element 633 may not contain a horizontal section 633a and may contain a pair of left and right vertical sections 633b on the side of the inner housing 620, with which the foamed thermal insulation material 622 was filled. In this case, the vertical sections 633b are not connected to each other, but are independent elements, also, even in this case, by providing an element to limit the position in one way or another so as to set the left and right positions of the vertical sections 633b, the accuracy of the left and the right mounting positions of the rail guide 631 may be increased. By eliminating the horizontal portion 633a and reducing the resources for its manufacture, a high precision rail device can be provided.

Moreover, by making holes 631c in the vertical portions 631b at both ends of the connecting element 633, heat transfer from the connecting element 633 is prevented when the temperature ranges of the plurality of storage rooms are different. Condensation on the side of the storage chamber having a high temperature range can be prevented, and an increase in power consumption due to heat leakage can be prevented.

Moreover, with regard to the holes 631c to be made in the vertical portions 631b, a plurality of them can be provided to such an extent that the strength can be maintained and the amount of heat transfer can be effectively reduced.

Moreover, in the case where the first rail rails (fixed rail rails) 631a, the pairs of left and right rail rails 631 are connected by a plurality of connecting devices 633 in the forward and backward directions, especially when this rail rails 631 is used in a large refrigerator In size, the connecting element 633 can be made smaller by dividing the connecting element 633 into a plurality of elements, and thus, costs can be reduced.

Moreover, in the first embodiment, the rail device 631 was the same for the chamber 627 for vegetables and the freezer 628, however, in accordance with the manner of storage in practical use, etc., if refrigerators are used in which each of the storage chambers made of different materials, costs can be further reduced, and reliability can be improved.

Moreover, the connecting element 633 is made of a material having a linear expansion coefficient of 1.0-3.0 × 10 ^-6 cm / cm · ° C and a thermal conductivity of 0.1-0.2 W / m · K, however, in general, with regard to the coefficient of linear expansion, the group of metals is 1.0-3.0 × 10 ^-6 cm / cm · ° C and the group of polymers is 1.0-15.0 × 10 ^-5 cm / cm · ° C; and the thermal conductivity of the group of metals is 1.0-400.0 W / m · K, and the group of polymers is 0.1-0.2 W / m · K.

Therefore, as the material of the connecting element 633, preferably, a group of metals having a small coefficient of linear expansion can be used in cases where the accuracy of the attachment position of the rail guide device 631 is required when the refrigerator 618 is operating, and a group of polymers having a small coefficient of thermal conductivity can be used in cases where it is required to prevent the formation of condensation on the side of the storage chamber having a high temperature range, and containment increased eniya energy consumption due to heat leakage. In addition, both can be made in one piece for use with respect to many storage chambers.

Moreover, in the first embodiment, a description was given based on an example of the presence of a rail device 631 used in the vegetable chamber 627 and the freezer 628, however, it can be used for a storage chamber containing a retractable container, if necessary. For example, it can be used in a retractable type storage chamber, such as a switching chamber 626 located above the vegetable chamber 627 and an ice making chamber (not shown) that is adjacent to the switching chamber 626.

Moreover, in the first embodiment, a description was given on the basis of an H-shaped connecting member 633 including a horizontal portion 633a and vertical sections 633b at both ends of the horizontal portion 633a, and on which the rail device 631 is attached integrally. chambers 627 for vegetables and a freezer 628, however, a connecting element may be used including a vertical portion in each of the chambers 627 for vegetables and a freezer 628. In this case, in the refrigerator, in which the vegetable chamber 627 and the freezer 628 are not located above and below, a high-quality drawer can be provided having very little instability and which requires little effort even when the load is applied. In addition, compared with the case in which a plurality of rail guides are attached to one connecting element, in the case where the temperature ranges of the plurality of storage rooms are different, additional heat transfer from the connecting element can be prevented, and an increase in power consumption due to heat leakage can be prevented. .

Moreover, the first rail guides (fixed rail guides) of the pairs on the left and right sides can be connected by a plurality of connecting devices. In this case, by dividing the connecting element into a plurality of elements, the connecting element can be made smaller; thus, costs and mass can be reduced.

SECOND EMBODIMENT

11 is a front view schematically showing a construction diagram of a rail device in accordance with a second embodiment of the present invention.

The rail device 80 in accordance with the second embodiment has a different junction between the first rail (cabinet rail) 42 and the bracket 84 as compared to the rail device 40 in accordance with the first embodiment.

Specifically, the bracket 84 is generally made with an L-shape. Moreover, the lower surface of the first rail (cabinet rail) 42 and the bracket 84 are connected to each other by spot welding (the area surrounded by the dashed line in Fig.11).

Those. the bracket 84 supports the first rail (cabinet rail) 42 from the bottom side.

Moreover, the load is applied mainly in the vertical direction to the joint surface between the first rail (cabinet rail) 42 and the bracket 84. Therefore, the reliability of this connected section is improved.

Moreover, the bracket 84 has one less bend compared to the bracket 41 in the first embodiment. Those. the bracket 84 can be manufactured with fewer steps than the bracket 41.

Thus, the rail device 80 in accordance with the second embodiment has high strength with respect to the vertical load, mainly in the vertical direction and reliability.

Thus, even in the case in which the rail guide device 80 supports a storage chamber having a large capacity, with the possibility of full opening, the displacement of the rail guide device 80 is prevented, and the usability of the storage chamber is maintained.

THIRD EMBODIMENT

12 is a front view showing a construction diagram of a rail device 81 in accordance with a third embodiment of the present invention.

The rail device 81 according to the third embodiment has a first rail (cabinet rail) 86 with the same shape as that of the conventional fixed rail 4031a (see FIG. 42).

Those. unlike the first rail 42 in accordance with the first embodiment, the first rail (cabinet rail) 86 is attached directly to the inner casing 70.

Moreover, unlike the first rail (cabinet rail) 42, the cross-sectional shape of the first rail (cabinet rail) 86 is not symmetrical about the center line. However, the vertical dimension of the second rail (intermediate rail) 85 is larger than the vertical dimension of the second rail 43 in accordance with the first embodiment.

Thus, the transverse secondary moment of the second rail (intermediate rail) 85 is greater than the transverse secondary moment of the second rail (intermediate rail) 43. That is, the second rail rail (intermediate rail rail) 85 has greater flexural strength than the second rail rail (intermediate rail rail) 43.

For example, the transverse secondary moment about the central axis, which is required for the second rail (intermediate rail) 85, is calculated taking into account the position and magnitude of the load applied to the rail guide 81.

Moreover, based on the calculated transverse secondary moment and the cross-sectional shape of the second rail (intermediate rail) 85, including the cross-sectional shapes of the upper flange and the lower flange of the second rail (intermediate rail) 85, the vertical dimension of the second rail (intermediate rail) is obtained ) 85 required for the calculated transverse secondary moment.

By setting the actual vertical size of the second rail (intermediate rail) 85 larger than the size obtained as described above, the actual transverse secondary moment becomes larger than the value of the calculated transverse secondary moment.

Thus, by setting the vertical size of the second rail (intermediate rail) large, the strength of the second rail (intermediate rail) 85 relative to bending can be increased.

Thus, even in the case in which the rail guide device 81 supports the storage chamber having a large capacity, with the possibility of full opening, the displacement of the rail guide device 81 is prevented, and the usability of the storage chamber is maintained.

Specifically, in accordance with a third embodiment of the present invention, the portion for preventing the rail guide device from being lowered is formed in such a way that by specifying the vertical size of the second rail (intermediate rail) 85 larger than a certain size, the transverse secondary moment over the section surface , vertical to the longitudinal direction, becomes larger than a certain value. With this design, the displacement of the second rail (intermediate rail) is prevented, and the usability of the storage room is maintained, even if the storage room has a large capacity, with the possibility of full opening, by resizing the second rail (intermediate rail) 85 so as to increase the lateral secondary moment of the second rail (intermediate rail) 85.

FOURTH EMBODIMENT

13 is a front view showing a construction diagram of a rail device in accordance with a fourth embodiment of the present invention.

The rail device 82 in accordance with the fourth embodiment has a first rail (cabinet rail) 86 having the same shape as that of the conventional fixed rail 4031a (see FIG. 42).

Moreover, the flange on the side of the inner casing 70 (left side in FIG. 13) of the third rail (upper rail) 44a is longer than the third rail 44 of the first embodiment (the part surrounded by a dashed line in FIG. 13).

Specifically, as shown in FIG. 13, the third rail (upper rail) 44a has downward flanges on the right and left, relative to the longitudinal direction, sides of the flange on the second rail 43.

Moreover, the flange on the inner surface side (left side in FIG. 13) of the inner housing 70 of the right and left flanges is extended downward relative to the other flange.

Thus, the lateral secondary moment of the third rail (upper rail) 44a becomes larger than the lateral secondary moment of the third rail 44. That is, the third rail (upper rail) 44a has greater flexural strength than the third rail 44.

Thus, even in the case in which the rail device 82 supports a storage chamber having a large capacity, with the possibility of full opening, the displacement of the rail device 82 is prevented, and the usability of the storage chamber is maintained.

Specifically, in accordance with a fourth embodiment of the present invention, the portion for preventing the rail guide device from being lowered is formed so that the flanges of the third rail (upper rail) 44a are defined as flanges pointing downward on the right and left, relative to the longitudinal direction, sides of the flange on the second rail 43, and the flange from the side of the inner surface of the right and left flanges is extended downward relative to the other flange. With this design, the displacement of the third rail rail is prevented, and the usability of the storage chamber is maintained even if the storage chamber having a large capacity is fully openable by changing the cross-sectional surface shape of the third rail rail (upper rail rail) 44a so so as to increase the lateral secondary moment of the third rail (upper rail) 44a.

FIFTH EMBODIMENT

FIG. 14 is a front view showing a construction diagram of a rail device in accordance with a fifth embodiment of the present invention.

Similarly to the rail device 80 in accordance with the second embodiment, the rail device 83 in accordance with the fifth embodiment has a bracket 84, generally made with an L-shape.

Moreover, the lower surface of the first rail (cabinet rail) 42 and the bracket 84 are connected to each other by spot welding, and the bracket 84 supports the first rail (cabinet rail) 42 from the bottom side.

However, the support form in which the first rail (cabinet rail) 42 and the third rail (upper rail) 44 support the second rail (intermediate rail) 43a differs from the support forms in the first to fourth embodiments.

Specifically, as shown in FIG. 14, when any part of the second rail (intermediate rail) 43a is in the form of an upper flange 43b, a support plate 43c and a lower flange 43d, the support form shown below is obtained.

Those. the first rail (cabinet rail) 42 supports a portion around the lower flange 43d by a plurality of bearings 45 from four directions over the cross-sectional surface. Thus, the second rail rail (intermediate rail rail) 43a is movably supported in the longitudinal direction.

Moreover, the third rail (upper rail) 44 supports the part around the upper flange 43b by a plurality of bearings 45 from four directions over the cross-sectional surface. Thus, the second rail rail (intermediate rail rail) 43a is movably supported in the longitudinal direction.

Those. when compared with the first embodiment and the fourth embodiment, the second rail (intermediate rail) 43a is supported from a greater number of directions in the relationship between the first rail (cabinet rail) 42 and the third rail (upper rail) 44.

Thus, the strength relative to the force inward (in the right direction in Fig. 9) of the joint between the third rail (upper rail) 44, the first rail (cabinet rail) 42 and the second rail (intermediate rail) 43a promoted.

Thus, even in the case in which the rail guide device 83 supports the storage chamber having a large capacity, with the possibility of full opening, the displacement of the rail guide device 83 is prevented, and the usability of the storage chamber is maintained.

Note that if the second rail (intermediate rail) 43a is supported in four directions from at least one of the first rail (cabinet rail) 42 and the third rail (upper rail) 44, the strength of the rail device 83 to a greater extent than in the case of support from three directions.

As described above, the first to fifth embodiments have been described. However, each kind of technical feature described in each description and figure may be combined in various ways.

For example, the holder member 48 shown in FIG. 3 can be used, so that the rail device 80 in accordance with the second embodiment is attached to the inner housing 70. Thus, the inclination of the rail device 80 inward and the displacement, for example, warping, of the rail guide device 80 is prevented.

Moreover, a similar effect is achieved equally by using the holder member 48 for attaching a rail device in accordance with each of the third to fifth embodiments to the inner housing 70.

Moreover, for example, a rib similar to that of the bracket 41 of the first embodiment may be provided for the bent portion of the first rail (cabinet rail) 86 in accordance with the third embodiment. Thus, the strength of the first rail guide (cabinet rail) 86 with respect to bending is increased.

Moreover, for example, all the technical features of each rail guide device in accordance with the second to fifth embodiments can be combined.

That is, as described in the second embodiment, the bottom surface of the first rail (cabinet rail) 42 and the L-shaped bracket 84 are connected to each other by spot welding. Moreover, a second rail (intermediate rail) 85 having an elongated vertical dimension, and as described in a fourth embodiment, a third rail (upper rail) 44a having an elongated flange portion are used as described in the third embodiment; .

Moreover, as described in the fifth embodiment, a plurality of bearings 45 are provided in such a way that the second rail (intermediate rail) 85 is supported from four directions along the cross-sectional surface of the first rail (cabinet rail) 42 and the third rail (upper rail) 44a.

Thus, the rail guide device, which carries out a retractable storage chamber with satisfactory ease of use, can be provided by combining each type of technical feature to increase the reliability of the rail guide device.

Moreover, each type of rail device in accordance with the first to fifth embodiments can also be used as a telescopic mechanism, not only in the vegetable chamber 56 and the freezer 57, but also in the ice making chamber 54 and the switching chamber 55 representing retractable storage rooms.

SIXTH EMBODIMENT

A refrigerator in accordance with a sixth embodiment of the present invention will be described below with reference to the drawings.

15 is a front view of a refrigerator in accordance with a sixth embodiment of the present invention.

As shown in FIG. 15, the refrigerator 151 is a refrigerator having double-leaf hinged doors and has a storage room divided into a plurality of zones in a heat-insulated housing 152.

Specifically, starting from the upper part, a refrigerating chamber 153, an ice producing chamber 154, a switching chamber 155 connected to an ice producing chamber 154 and capable of changing the temperature inside the chamber, a vegetable chamber 156 and a freezer 157 are provided as a storage chamber.

The opening area of each storage chamber is provided with a thermally insulated door filled with foaming and heat-insulating material, such as urethane. Specifically, on the cooling chamber 153, a left door 160a and a right door 160b are provided for closing with the possibility of opening the opening region of the heat-insulated body 152.

Moreover, sliding type doors 161, 162, 163 and 164 are provided on the ice making chamber 154, the switching chamber 155, the vegetable chamber 156 and the freezing chamber 157, respectively. Of these storage chambers, the storage chambers, with the exception of the refrigerating chamber 153, are retractable storage chambers.

Moreover, as shown in FIG. 15, the heat-insulated body 152 is formed by a heat-insulating wall in a state in which the space is formed by an inner body 170 formed by vacuum molding of a polymeric substance, such as ABS, and an outer case 171 made of a metal material, such as a steel sheet with a protective coating, and this space is filled with foamed insulation material 172.

A cooler (not shown) and a fan (not shown) are provided on the lower surfaces of the vegetable chamber 156 and the freezer 157. In addition, the cooler is driven by a compressor (not shown) installed in the lower part of the main body of the refrigerator 151, and the cooled air is directed from the cooler to each storage room. Moreover, each storage room is regulated so as to have a certain temperature.

FIG. 16 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with a sixth embodiment.

As shown in FIG. 16, the vegetable chamber 156 is a retractable type storage chamber, and the storage container 163a by which the vegetable chamber 156 is formed is provided in the thermally insulated housing 152 so that it can be extended by the rail guide 140.

Specifically, the right and left sides (front side and rear side in FIG. 16) of the storage container 163a are supported by a third rail (upper rail) 144, which can be moved in the forward and backward directions of the refrigerator 151 using a second rail (intermediate rail) Guide) 143.

In addition, the second rail rail (intermediate rail rail) 143 is supported to move the first rail rail (cabinet rail rail) 142 not shown in FIG. 16. Moreover, the first rail (cabinet rail) 142 is attached to the inner surface of the inner case 170.

The end portion of the third rail (upper rail) 144 for supporting both the right and left sides of the storage container 163a is connected to the door 163. Moreover, the maximum extension distance of the door 163 is a length capable of fully opening the storage container 163a.

That is, when the vegetable chamber 156 is fully open, the maximum extension distance is the length at which the end surface of the rear (left side of FIG. 14) of the storage container 163a is located in front of the front surfaces of the door 161 and the door 162 located directly above the camera 156 for vegetables.

In this case, storing food in the back of the storage container 163a and removing food from the back of the storage tank 163a is facilitated. Moreover, when the storage container 163a is attached or disconnected, the upper doors 161 and 162 do not collide with the storage container 163a. Therefore, the attachment and detachment of the storage container 163a can be facilitated.

In addition, the maximum extension distance of the freezer 157 is also determined in the same way as for the camera 156 for vegetables, and the user can easily attach and disconnect the storage container through which the freezer 157 is formed.

The vegetable compartment 156 and the freezer compartment 157 extend to a certain position by sliding the rail device 140.

FIG. 17 is a sectional view showing a structural diagram of a rail device 140 in accordance with a sixth embodiment of the present invention.

As shown in FIG. 17, the rail device 140 is a device for supporting a storage container by which a drawer type storage chamber is formed movably in the forward and backward directions and has a first rail (cabinet rail) 142, a second rail (intermediate rail) 143 and a third rail (upper rail) 144.

The first rail (cabinet rail) 142, the second rail (intermediate rail) 143 and the third rail (upper rail) 144 have elongated shapes and are arranged so that their longitudinal directions are the same.

Moreover, the first rail (cabinet rail) 142 is attached to the holder element 148 by screws 150a, with the inner case 170 being between them. Thus, the rail device 140 is attached to the inner surface of the inner case 170. The holder element 148 is an example of auxiliary elements in the refrigerator of the present invention and is an element for attaching the rail guide device 140 to the inner surface of the inner housing 170. The holding element 148 of Tell placed from foamed thermal insulation material 172, and specifically the support member 148 is embedded in the foam insulation material 172.

As shown in FIG. 17, the holder member 148 has a flange portion 148a extending just below the lower surface of the first rail (cabinet rail) 142. In this way, downward skewing which biases the lower rail of the first rail (rail) can be prevented. cabinet guide) 142. Specifically, the holder member 148 has a flange portion 148a extending at least to the central region of the lower surface of the first rail (cabinet rail) 142. Then, The holderent 148 has a vertical flange portion 148e obtained by bending the end portion of the flange portion 148a downward at an almost right angle in the vertical direction.

The first rail (cabinet rail) 142 is an example of a first rail in the refrigerator of the present invention.

The rail device 140 is formed so that the first rail (cabinet rail) 142 is attached to the inner surface of the inner housing 170, and the storage container 163a is directly or indirectly supported by the third rail (upper rail) 144 so as to move in the directions back and forth.

The cross-sectional shape of the first rail (cabinet rail) 142 is not symmetrical about the center line.

A second rail (intermediate rail) 143 is an example of a second rail in the refrigerator of the present invention. The second rail guide (intermediate rail guide) 143 has a cross-section surface vertical to the longitudinal direction, made in the form of an I-beam, and has a flange protruding to the right and left, located in the upper and lower parts in the longitudinal direction.

The lower flange of the upper and lower flanges is supported with the possibility of moving in the longitudinal direction of the first rail (cabinet rail) 142.

The third rail (upper rail) 144 is an example of a third rail in the refrigerator of the present invention and is a rail for supporting the container, which forms a drawer type storage chamber, for example, a storage container 163a.

The third rail (upper rail) 144 has a U-shaped cross-sectional surface and supports the flange on the second rail (intermediate rail) 143 in a movable manner in the longitudinal direction.

Specifically, each of the first rail (cabinet rail) 142 and the third rail (upper rail) 144 is movably supported by the second rail (intermediate rail) 143 by a plurality of bearings held by the ball cage 146. Here, the bearing 145 is an example of a movable refrigerator member of the present invention.

More specifically, a portion around the lower flange of the upper and lower flanges of the second rail (intermediate rail) 143 is supported by the first rail (cabinet rail) 142 by a plurality of bearings 145.

Moreover, by supporting the second rail (intermediate rail) 143 in three directions by bearings 145 over the cross-sectional surface of the first rail (cabinet rail) 142, the second rail (intermediate rail) 143 is movably supported by the first rail 142 in the longitudinal direction.

In addition, a portion of the second rail (intermediate rail) 143 around the upper flange is supported by the third rail (upper rail) 144 by bearings 145. Furthermore, by supporting the second rail (intermediate rail) 143 in three directions by bearings 145 along the cross-sectional surface of the third rail (upper rail) 144, the second rail (intermediate rail guide) 143 is movably supported by the third rail (upper rail) 144 in the longitudinal direction.

Thus, the first rail (cabinet rail) 142, the second rail (intermediate rail) 143 and the third rail (upper rail) 144 are combined so as to allow the second rail (intermediate rail) 143 to move along the first rail guide (cabinet rail) 142 in its longitudinal direction.

Moreover, the third rail (upper rail) 144 may move along the second rail (intermediate rail) 143 in its longitudinal direction. Those. the third rail (upper rail) 144 may move along the first rail (cabinet rail) 142 in its longitudinal direction through the second rail (intermediate rail) 143.

In such a movement, the second rail (intermediate rail) 143 and the third rail (upper rail) 144 can smoothly move due to the rotation of the bearings 145.

Below will be described part to prevent the lowering of the rail guide device in accordance with the present invention.

As shown in FIG. 42, when a load is applied to the conventional rail device 4031, it is likely that the rail device 4031 is biased in the direction shown by the arrow. Those. the fixed rail 4031a tends to open.

However, as shown in FIG. 17, the holder member 148 has a flange portion 148a extending at least to a central region of a lower surface of a first rail (cabinet rail) 142. Therefore, a central region relative to a lower surface of a first rail (rail) cabinet guide) 142 at the bottom of the first rail (cabinet rail) 142 is perceived by the holder member 148. Moreover, the holder element 148 is placed on the side of the foam insulation material 172, and the holder element 148 is embedded in the foam insulation material 172. Therefore, the contact area between the holder element 148 and the foam insulation material 172 becomes large. Thus, the displacement of the rail device 140 vertically downwards can be prevented due to the resistance caused by the contacting foamed heat-insulating material 172. That is, by shaping the holder member 148 for attaching the rail device 140 to the inner case 170, the strength of the material of the holder member 148 itself is increased, and the holder element 148 can be prevented from moving vertically in the foam insulation material 172. Therefore, the vertical inclination of the rail device 140 caused by the load applied to the rail guide 140 can be prevented. As a result, the opening of the first rail (cabinet rail) can be prevented 142. That is, the holder element 148, which performs the function of attaching the rail guide device 140, can also perform the function of reinforcing the rail guide device 140.

Moreover, on the lower surface side of the rail guide device 140, the holder member 148 has a vertical flange portion 148e extending in the same direction as the direction of application of force to the rail guide device 140 when the sliding door is extended. Therefore, due to the shape of the holder element 148, the strength is increased by increasing the vertical transverse secondary moment, and the contact area with the foaming and foamed heat-insulating material 172 in the horizontal direction of the vertical flange portion 148e of the holder element 148 is increased, thereby making it possible to contain bias, for example, to give a vertical movement flange portion 148e in the horizontal direction (shown by the arrow in FIG. 17), due to resistance caused by contact m with foaming and foam heat-insulating material 172. That is, by completing the shape of the holder element for attaching the rail device to the inner case, the strength of the material of the holder element itself can be increased, and the horizontal movement of the holder element in the foaming and heat-insulating material can be prevented. Thus, tilting the rail device in the horizontal direction when a load is applied to the rail device can be prevented.

As described above, the shape of the holder member 148 is configured to attach the rail device 140 to the inner case 170. Namely, according to the sixth embodiment, the holder member 148 is arranged on the side of the foaming and foamed heat-insulating material 172 of the inner case 170, in which the rail is provided a guiding device 140, having a flange portion 148a extending at least to the central region of the lower surface of the first rail (cabinet rail) 142. This design inhibits displacement, such as the vertical inclination of the rail guide 140 when a load is applied to the rail guide 140, can be prevented.

Those. the holder member 148, which initially has the function of attaching the rail guide 140, may also have a reinforcement function of the rail guide 140.

FIG. 18 is a perspective view showing the appearance of a rail device in accordance with a sixth embodiment of the present invention. As shown in FIG. 18, the third rail (upper rail) 144 is moved relative to the first rail (cabinet rail) 142 through the second rail (intermediate rail) 143. That is, as a whole, the sliding and sliding of the rail guide device 140 occurs.

Specifically, in the case of the vegetable chamber 156, the right and left third rail rails (upper rail rails) 144 connected to the door 163 are advanced by the user extending the sliding door 163.

Thus, as shown in FIG. 16, the storage container 163a supported by the third rail guides (upper rail guides) 144 is pushed outward from the thermally insulated body 152. That is, chamber 156 for vegetables is fully open.

Moreover, the lengths of the first rail (cabinet rail) 142, the second rail (intermediate rail) 143 and the third rail (upper rail) 144 are determined so that the remote end wall of the storage container 163a is located in front of the front surface a door immediately above the vegetable chamber 156 when the storage container 163a is extended to the maximum extension position.

Thus, the refrigerator 151 in accordance with the sixth embodiment, capable of fully opening the vegetable chamber 156, forming a drawer type storage chamber, achieves ease of use, for example, the smoothness of the drawer, due to the various technical features of the rail guide device 140.

FIG. 19 is a perspective view showing an attached state of a holder member in accordance with a sixth embodiment of the present invention. As shown in FIG. 19, the holder member 148 is attached to the back of the inner housing 170.

Specifically, firstly, the fastening part 148b of the auxiliary element to be attached to the inner case 170 provided at the holder element 148 is aligned with the hole provided at the inner case 170 and is fastened with screws 150b. Then, the space between the inner case 170 and the outer case 171 is filled with a foaming and expandable heat-insulating material 172, such as urethane, to seal the holder element 148 into the foam-forming and expandable heat-insulating material 172 in the state of attachment to the rear surface of the inner case 170, and the holder element 148 is more rigid attached to the inner casing 170 due to the hardening of the foaming and expandable heat-insulating material 172. Then, the rail guide device 140 p is housed in the inner casing 170, then an opening (not shown) provided at the first rail (cabinet rail) 142, and a fastening portion 148c for the rail guide provided at the holder member 148 are aligned with each other and fastened with screws 150a, such in this way, the rail device 140 is attached to the inner casing 170.

20 is a perspective view showing a holder member in accordance with a sixth embodiment of the present invention. The flange portion 148a provided at the holder member 148 is mounted in a position to absorb a downward load applied to the rail device 140 spaced apart in the longitudinal direction when the door 163 is extended. At this moment, the flange portion 148a is moved so as to increase the angle that is defined by the side surface 148f of the holder member 148, which is the mounting surface of the holder member 148 having the fastener portion 148b and the rail guide fastener portion 148c, and the surface, having a flange portion 148a. Due to the displacement in the direction in which the angle formed by the above two surfaces increases, the warping of the rail device 140 is skewed, thereby impairing the usability of opening and closing the sliding door.

Thus, by making the shape of the holder element 148 to increase the reliability of the rail guide device, a rail guide device providing a retractable type storage chamber with sufficient usability can be provided.

As described above, the holder element 148 has a flange portion 148a extending at least to the central region of the lower surface of the first rail (cabinet rail) 142, thereby sensing the center region of the first rail (cabinet rail) 142 on the element 148 the holder in the lower part of the first rail (cabinet rail) 142, as well as increasing the contact area between the holder element 148 and the foamed insulation material 172. This makes it possible derzhivanie displacement of the rail guiding device 140 vertically downwards by the resistance caused by contact with foam heat-insulating material 172. That is, by shaping the holder member 148 for attaching the rail device 140 to the inner casing 170, the strength of the material of the holder element 148 is increased, and the vertical movement of the holder element 148 in the foamed insulation material 172 can be prevented. This design inhibits displacement, such as the vertical inclination of the rail device 140 when a load is applied to the rail guide 140, and as a result, opening of the rail can be prevented. rail howl (cabinet rail) 142. That is, the holder member 148, which initially has the function of attaching the rail guide 140, may also have a reinforcement function of the rail guide 140.

Moreover, on the lower surface side of the rail guide device 140, the holder member 148 has a vertical flange portion 148e extending in the same direction as the direction of application of force to the rail guide device 140 when the sliding door is extended. Therefore, due to the shape of the holder element 148, the strength is increased by increasing the vertical transverse secondary moment, and the contact area with the foamed heat-insulating material 172 in the horizontal direction of the vertical flange portion 148e of the holder element 148 is increased, thereby making it possible to contain bias, for example, to move the vertical flange part 148e in the horizontal direction (shown by the arrow in FIG. 17), due to the resistance caused by the contact with the foam heat-insulating material 172. Those. by making the shape of the holder element for attaching the rail device to the inner case, the strength of the material of the holder element itself can be increased, and the holder element 148 can be prevented from moving horizontally in the foam insulation material 172. Thus, the rail can be tilted horizontally when a load is applied to the rail device, it can be prevented.

Those. the inwardly bent flange portion 148a of the holder element 148 extends to the central region of the lower surface of the first rail (cabinet rail) 142.

Thus, the amount of tilt of the rail guide device 140 inward and the amount of vertical skewing are limited. Note that the length of the inwardly bent flange portion 148a of the holder member 148 is preferably a length extending farther than the center of the first rail (cabinet rail) 142 in the right and left directions.

Thus, a large number of food products, etc., are stored in the vegetable chamber 156 with a large capacity, and, as shown in FIG. 16, even when fully opened, the smoothness when placing and removing products to / from the vegetable chamber 156 is not is lost. In addition, the user can easily attach and disconnect the storage tank 163a for cleaning the storage tank 163a.

Moreover, the rail guide device of the freezer 157 may have the same construction as the rail guide device of the vegetable chamber 156.

Thus, in accordance with the sixth embodiment, the refrigerator 151 includes a retractable type storage room, and even if the storage capacity is large, the excellent usability of the refrigerator is not lost.

Moreover, according to a sixth embodiment, the rail device is used as a telescopic mechanism not only in the vegetable chamber 156 and the freezer 157, but also in the ice making chamber 154 and the switching chamber 155, which are retractable storage chambers .

Moreover, as shown in FIG. 17, the upper surface of the flange portion 148a of the holder element 148 and the lower surface of the inner housing 170 are directly brought into contact with each other, not through the heat-insulating material. Therefore, when a load is applied to the rail device 140, the displacement of the rail device 140 due to the load can be prevented not by means of soft foamed heat-insulating material 172, but by the holder element 148 made of durable material, thereby making it possible to obtain the reinforcing effect of the element 148 holder.

Moreover, since the holder element 148 can be directly attached to the surface of the inner case, the attachment point of the holder element 148 is easily controlled. Accordingly, the holder member 148 can be securely attached to a desired specific location, and, undoubtedly, the reinforcing effect of the holder member 148 can be obtained.

Moreover, as shown in FIG. 17, the lower surface of the first rail (cabinet rail) 142 and the upper surface of the inner case 170 are brought into direct contact with each other. Therefore, when a load is applied to the rail device 140, and there is space between the lower surface of the first rail (cabinet rail) 142 and the upper surface of the inner case 170, the rail device continues to be displaced without any obstruction. However, due to direct contact between the bottom surface of the first rail (cabinet rail) 142 and the upper surface of the inner case 170, there is no space between the bottom surface of the first rail (cabinet rail) 142 and the upper surface of the inner case 170, and the rail 140 due to the load can be prevented by the element 148 of the holder attached to the foamed thermal insulation material 172 of the inner cases 170. Thus, undoubtedly, the effect of reinforcing the element 148 of the holder can be obtained.

However, under the influence of the variation in the step of attachment of the rail device and the spread of products, etc., direct contact is not necessarily made between the lower surface of the first rail (cabinet rail) 142 and the upper surface of the inner casing 170. However, if the space is between the lower surface of the first rail guide rail (rail rail) 142 and the upper surface of the inner housing 170 is 1 mm or less, the deterioration effect of the reinforcing element 148 of the holder is small compared to the case of direct contact, and if the space between the lower surface of the first rail (cabinet rail) 142 and the upper surface of the inner case 170 is 1 mm or less, almost the same effect can be obtained as the effect in case of direct contact.

Moreover, as shown in FIG. 17, from the bottom surface of the rail device 140, the holder member 148 has a flange portion 148e extending in the same direction as the direction of application of force to the rail device when the sliding door is extended. Therefore, due to the shape of the holder element 148, the strength is increased by increasing the vertical transverse secondary moment, and the contact area with the foamed heat-insulating material 172 in the horizontal direction of the vertical flange portion 148e of the holder element 148 is increased, thereby making it possible to contain bias, for example, to move the vertical flange parts 148e of the holder element 148 in the horizontal direction due to resistance caused by contact with the foamed heat by leaking material 172. I.e. by making the shape of the holder element for attaching the rail device 140 to the inner case, the strength of the material of the holder element 148 itself can be increased, and the horizontal movement of the holder element in the foam insulation material 172 of the holder element 148 can be prevented. Thus, tilting the rail device in the horizontal direction can be prevented when a load is applied to the rail device.

Moreover, as shown in FIG. 19, by casting the holder member 148 of a metal material, the strength required for the fastener portion 148c for the rail guide provided on the holder member 148 can be easily provided, and the rail guide device is attached, which is The original purpose of the application can undoubtedly be realized. Those. the holder element 148, which has the function of attaching and reinforcing the rail guide device, can be molded as a single element.

Moreover, as shown in FIG. 20, the holder member 148 has a reinforcing shape 148d in a bent portion between two flat surfaces with a certain angle between them. Therefore, displacement of the bent portion of the holder member 148 caused by the load applied to the flange portion 148a of the holder member 148 can be prevented due to the shape of the holder member itself, thereby making it possible to increase the strength of the holder member 148 and suppress the displacement of the rail guide 140.

Moreover, the holder element 148 has a shape applicable on both the right and left sides. Therefore, it is not necessary to use the holder element 148 selectively when the right and left holder elements 148 are attached to the inner case 170, thereby making it possible to improve the usability and reduce the cost required for the casting mold for holding the holder element 148.

Moreover, as shown in FIG. 20, a certain distance is set between the lower surface 148g of the vertical flange portion and the inner housing 170 opposing the lower surface 148g of the vertical flange part. Therefore, when a load is applied to the rail device, the holder member 148 is also affected by the displacement of the rail device due to the load. Therefore, a certain distance exists between the bottom surface 148g of the vertical flange portion of the holder member 148, which is likely to be biased in the same direction as the direction of the load applied to the rail device and the inner case 170. In such a case, the bottom surface 148g of the vertical flange portion and the inner case 170 are not directly brought into contact with each other, thereby making it possible to accommodate the foamed insulation material 172. Accordingly, the surface shape of the inner case 170 can satisfactorily be maintained without causing damage, such as punching the inner case 170 with the lower surface 148g of the vertical flange portion of the holder element 148, due to the displacement of the holder element 148.

In this case, if the determined distance is 1 mm or less when a load is applied to the rail device, the holder element is also affected by the displacement of the rail device, and there is a high probability that damage will occur, such as breaking the inner case 170 with the lower surface 148g of the vertical flange portion of the holder member 148. It is unlikely that it can be possible that the displacement of the holder element exceeds 5 mm, which is caused by the displacement of the rail guide device, which usually occurs due to the load applied to the rail guide device. Therefore, to increase a certain distance, it is necessary to increase the convex shape formed inside the refrigerator by the inner case 170 and the foamed heat-insulating material 172, thereby reducing the internal capacity. Thus, the determined distance is preferably set to 1 mm or more and 5 mm or less.

FIG. 21 is a sectional view showing a construction diagram of another rail guide device according to a sixth embodiment of the present invention. Where surrounded by a dotted line portion in FIG. 21, the vertical flange portion 148e is inclined to the opposite side from the inside of the refrigerator (left side in FIG. 21), i.e. so as to be at a distance from the inner casing 170. Therefore, when a load is applied to the rail device, the holder element 148 is also influenced by the displacement of the rail, thereby restraining the inward vertical flange portion 148e of the holder element 148 that is shifted inward of the storage chamber where there is an inner case 170. In such a case, more specifically in the direction of movement of the vertical flange portion 148e of the holder element 148, the inner case 170 is not It exists, and there is a foamed insulating material 172. Accordingly, the shape of the inner housing 170 can be more satisfactorily maintained without causing damage such as piercing of the inner shell 170 bottom surface 148g of vertical flange part due to the displacement of the holder element 148.

Note that, in accordance with the sixth embodiment, two mounting parts 148b of the auxiliary element are provided, respectively, in front of and in the rear of one holder element 148, one after the other. However, only the fastening portion 148b in the front of the holder member 148 is secured with screws 150b. This is due to the fact that in the rear part there is almost no downward movement of the rail in the longitudinal direction, and there is almost no displacement of the holder element, and therefore, from the point of view of reinforcement, even if the fixing part 148b of the auxiliary element is provided in one place in the front part where strength is required, the reinforcing effect can be obtained sufficiently.

Moreover, screw fastening 150b is used to fasten the holder member 148 to the inner case prior to foaming, and the holder member 148 can be firmly attached to the desired location even in the inner case before foaming, although the holder member 148 is sealed in the foam insulation material 172 after being filled with foam heat-insulating material 172, thus making it possible to undoubtedly obtain the amplification effect of the holder element 148. Moreover, as described above, the holder element 148 is finally attached to the side surface of the inner case 170, then embedded in the foamed heat-insulating material 172 and, after foaming, is a rigid element that is completely attached to the inner case 170. Therefore, the fastening part 148b is even on one side is sufficiently suitable for attaching the holder member 148 to the inner body 170 prior to foaming. Accordingly, the fixing part 148b of the auxiliary member can be attached in only one place.

As described above, two mounting parts 148b of the auxiliary element are provided, respectively, in the front and rear parts, one after the other, in one holder element 148. However, in accordance with the sixth embodiment, the fastening portion 148b can be attached with screws 150b only in the front of the holder member 148.

However, in order to have more strength, the back of the holder member 148 can also be attached with screws 150b.

Moreover, the fastener portion 148b of the auxiliary member is in a position closer to the flange portion 148a than the fastener portion 148c for the rail guide device. Therefore, when a load is applied to the rail device, the displacement of the holder member 148, which is affected by the displacement of the rail, can be further effectively prevented.

That is, when the fastener portion 148b of the auxiliary member is further from the flange portion 148a than the fastener portion 148c for the rail guide, the holder member displaced by the offset of the rail guide is displaced with the fastener portion 148c for the rail guide as the center turning. Displacement easily occurs when the center of rotation is away from the point to which the load is applied. Therefore, the center of rotation for displacing the holder member 148 is not defined as the fastener portion 148c for the rail guide device, but as the fastener portion 148b of the auxiliary member, thereby making the fastener portion 148b of the auxiliary member closer to the flange portion 148a representing the point to which is attached load. This makes it possible to suppress the displacement of the holder member 148, and as a result, reinforcement of the rail guide device is obtained.

Note that, in accordance with the sixth embodiment, two mounting parts 148c for the rail guide device are provided, respectively, at the front and rear of one holder member 148 one after the other and are secured by two screws 150a. However, two or more fastening parts 148c for the rail guide device, for example three fastening parts 148c for the rail guide device, can be provided in the front, rear and middle parts and can be fastened with three screws.

SEVENT OPTION

FIG. 22 is a sectional view showing a construction diagram of a rail device in accordance with a seventh embodiment of the present invention.

The rail guide device in accordance with the seventh embodiment has a different design compared to the rail guide device of the sixth embodiment. Specifically, as shown in FIG. 22, unlike the rail device 40 vertically aligned in three tiers, as shown in FIG. 3, the rail device 200 of the seventh embodiment has three rail guides arranged in three rows horizontally. Here, mainly, another feature will be described with respect to the sixth embodiment.

Specifically, as shown in FIG. 22, the rail device 200 is formed by a first rail (fixed rail) 201 provided with a flange portion 201a extending inwardly at the upper and lower parts of the plate member; a third rail (movable rail) 202 having a smaller width than the height of the first rail (fixed rail) 201 attached to the outer part of the support frame (not shown) by supporting metal connecting elements 206, with a flange portion 202a, passing outward from its upper and lower parts; and a second rail (middle rail) 203 provided between the inner and outer rails 201 and 202, having a height dimension smaller than the first rail (fixed rail) 201, and larger than the moving rail 202, with a flange portion 203a provided inward from its upper and lower parts.

Those. the rail device 200 has a first rail guide attached to the inner surface of the inner case, with flange parts 201a extending inward from the upper and lower parts of the plate member; a third rail with a width smaller than the height of the first rail (fixed rail) 201, attached to the outer part of the support frame (not shown) supporting the container by supporting metal connecting elements 206, with flange parts 202a extending outward from it upper and lower parts; and a second rail guide provided between the first rail (fixed rail) 201 and the third rail (moving rail) 202 having a height that is smaller than the first rail (fixed rail) 201 and larger than that a third rail (moving rail) 202, with flange portions 203a provided inward from its upper and lower parts.

The second rail rail (middle rail rail) 203 is substantially formed integrally with the first rail rail (fixed rail rail) 201 and the third rail rail (moving rail rail) 202 by means of a ball bearing 204 inserted into each of the flange portions 201a, 203a and 202a, and is supported so as to be movable in the longitudinal direction. Thus, by moving the second rail (middle rail) 203 in the first rail (fixed rail) 201 and moving the third rail (moving rail) 202 in the second rail (middle rail) 203, the third rail ( moving rail) 202 extends in two tiers.

Accordingly, due to the support mechanism of the rail rails 201, 202 and 203, the container supported by the third rail (the moving rail) 202, in the state of extension by the support frame (not shown), is significantly extended to the fully open position so that its rear end reaches the opening area of the front surface of the storage room.

Moreover, the first rail (fixed rail) 201 is attached to the holder member 205 by screws (not shown), with the inner casing 170 between them. Thus, the rail device 200 is attached to the inner surface of the inner casing 170. The holder member 205 is an example of an auxiliary element in the refrigerator of the present invention and is an element for attaching a rail guide device 200 to an inner surface of an inner case 17 0. The holder element 205 is placed on the side of the foamed heat-insulating material 172, and specifically, the holder element 205 is embedded in a foaming and heat-insulating material 172.

As shown in FIG. 22, the holder member 205 has a flange portion 205a extending just below the lower surface of the first rail (fixed rail) 201. In this way, downward warping of the first rail (fixed rail) 201 can be prevented. Specifically , the holder member 205 has a flange portion 205a extending at least to the central region of the lower surface of the first rail (fixed rail) 201. In addition, the element The holder 205 has a vertical flange portion 205e with its end portion bent downward at an almost right angle in the vertical direction.

Below will be described part to prevent the lowering of the rail guide device in accordance with the present invention.

As shown in FIG. 42, when a load is applied to the conventional rail device 4031, it is likely that the rail device 4031 is biased in the direction shown by the arrow. That is, it is likely that the first rail 4031a opens.

However, as shown in FIG. 22, the holder member 205 has a flange portion 205a extending at least to the central region of the lower surface of the first rail (fixed rail) 201. Therefore, the central region relative to the lower surface of the first rail (fixed) rail) 201 in the lower part of the first rail (fixed rail) 201 is perceived by the holder element 205. Moreover, the holder member 205 is placed on the side of the foam insulation material 172, and the holder member 205 is embedded in the foam insulation material 172. Therefore, the contact area between the holder member 205 and the foam insulation material 172 becomes large. Thus, the displacement of the rail device 200 vertically down can be prevented due to the resistance caused by contact with the foamed insulation material 172. That is, by the shape of the holder member 205 for attaching the rail device 200 to the inner casing 170, the material strength of the holder member 205 is increased, and the holder member 205 can be prevented from moving vertically in the foam insulation material 172. Therefore, the vertical inclination of the rail device 200 caused by the load applied to the rail device 200 can be prevented. As a result, the opening of the first rail (fixed rail) 201 can be prevented. 201, i.e. the holder member 205, which performs the function of attaching the rail guide device 200, can also fulfill the function of reinforcing the rail guide device 200.

Moreover, on the lower surface side of the rail device 200, the holder member 205 has a vertical flange portion 205e extending in the same direction as the direction of application of force to the rail device 200 when the sliding door is extended. Therefore, due to the shape of the holder element 205, the strength is increased by increasing the vertical transverse secondary moment, and the contact area with the foamed heat-insulating material 172 in the horizontal direction of the vertical flange portion 205e of the holder element 205 is increased, thereby making it possible to contain bias, for example, to move the vertical flange parts 205e in the horizontal direction due to resistance caused by contact with the foamed insulation material 172. That is, by completing the shape of the holder element for attaching the rail device to the inner case, the strength of the material of the holder element itself can be increased, and the horizontal movement of the holder element in the foaming and heat-insulating material can be prevented. Thus, tilting the rail device in the horizontal direction caused by the load applied to the rail device can be prevented.

Thus, by performing the shape of the holder member 205 for attaching the rail device 200 to the inner casing 170, namely, in accordance with the seventh embodiment, as a part for preventing the rail device from lowering, by arranging the holder element 205 from the side of the foam insulation material 172 an inner casing 170, in which a rail device 200 is provided, and having a flange portion 205a extending at least to the prices the sweeping region of the lower surface of the first rail (fixed rail) 201, displacement, such as the inclination of the rail device 200, caused by the load applied to the rail device 200, can be prevented.

Those. the holder member 205, which initially has the function of attaching the rail guide device 200, may also have a reinforcement function of the rail guide device 200.

Moreover, as shown in FIG. 22, the upper surface of the flange portion 205a of the holder member 205 and the lower surface of the inner housing 170 are directly brought into contact with each other, not through the heat-insulating material. Therefore, when a load is applied to the rail device 200, the displacement of the rail device 200 due to the load can be prevented not by means of soft foamed heat-insulating material 172, but by the holder element 205 made of durable material, thereby making it possible to obtain the reinforcing effect of the element 205 holder.

Moreover, since the holder member 205 can be directly attached to the surface of the inner case, the attachment point of the holder member 205 is easily controlled. Accordingly, the holder member 205 is securely attached to a desired specific location, and undoubtedly, the reinforcing effect of the holder member 205 can be obtained.

Moreover, as shown in FIG. 22, the lower surface of the first rail (fixed rail) 201 (more specifically, the lower surface of the lower flange portion 201a of the first rail (fixed rail) 201) and the upper surface of the inner casing 170 are inserted directly contact with each other. Therefore, when a load is applied to the rail device 200, and there is space between the lower surface of the first rail (fixed rail) 201 and the upper surface of the inner casing 170, the rail device continues to be displaced without any obstruction. However, due to direct contact between the lower surface of the first rail (fixed rail) 201 and the upper surface of the inner case 170, there is no space between the lower surface of the first rail (fixed rail) 201 and the upper surface of the inner case 170, and the rail device 200 is displaced due to the load can be prevented by means of the holder element 205 attached in the foam insulation material 172 the inner housing 170. Thus, undoubtedly, a reinforcing effect of the holder member 205 can be obtained.

However, under the influence of the spread of the step of attachment of the rail guide device and the spread of products, etc. direct contact is optionally made between the lower surface of the first rail (fixed rail) 201 and the upper surface of the inner case 170 in some cases. However, if the space between the lower surface of the first rail (fixed rail) 201 and the upper surface of the inner housing 170 is 1 mm or less, the deterioration of the reinforcing effect of the holder member 205 is small compared to the case of direct contact, and if the space between the lower surface the first rail (fixed rail) 201 and the upper surface of the inner casing 170 is 1 mm or less, almost the same The effect is the same as the effect in the case of direct contact.

Also, in accordance with the seventh embodiment, the holder element is cast from a metal material. The holder element has a reinforcing shape in a bent portion between two flat surfaces with a certain angle between them. The holder element has a shape such that it is applicable on both the right and left sides. A certain distance is set between the lower surface of the vertical flange portion and the inner housing opposing the lower surface of the vertical flange portion. The vertical flange portion is tilted in the opposite direction from the inside of the refrigerator. These designs provide the same effective effect as in the sixth embodiment.

Moreover, each length of the first rail (fixed rail) 201, the second rail (middle rail) 203 and the third rail (moving rail) 202 is defined so that the remote end wall of the storage container is located in front of the front surface a door located directly above the vegetable compartment when the storage container is extended to the maximum extension position.

Thus, the refrigerator in accordance with the seventh embodiment, capable of fully opening the vegetable chamber forming the drawer type storage chamber, achieves ease of use, for example, the drawer is smooth, due to the various technical features of the rail device 200.

FIG. 23 is a sectional view showing a construction diagram of another rail device in accordance with a seventh embodiment of the present invention.

As shown in FIG. 23, in the same way as the rail device 200 shown in FIG. 22, the rail device 210 of the seventh embodiment has three rail guides arranged in three rows horizontally, in contrast to the rail device 40, vertically aligned in three tiers, as shown in Fig.3.

Specifically, the second rail (middle rail) 213 with its cross-sectional shape, made H-shaped, is movable relative to the first rail (fixed rail) 211, and the third rail (movable rail) 212 is movable relative to the second rail a guide (middle rail guide) 213, thereby forming a sliding rail device as a whole. Note that in FIG. 23, the bearing, which is a movable element, is not shown.

In the rail device 210, as shown in FIG. 23, in the same manner as in the rail device 200 in FIG. 22, the holder member 215 has a flange portion 215a extending at least to the central region of the bottom surface of the first rail guide (fixed rail) 211. Therefore, the Central region of the lower surface of the first rail (fixed rail) 211 in the lower part of the first rail (fixed rail) 211 perception tsya element holder 215. Moreover, the holder member 215 is placed on the side of the foam insulation material 172, and the holder member 215 is embedded in the foam insulation material 172. Therefore, the contact area between the holder member 215 and the foam insulation material 172 becomes large. Thus, the vertical displacement of the rail device 210 can be prevented due to the resistance caused by contact with the foamed insulation material 172. That is, by the shape of the holder member 215 for attaching the rail device 210 to the inner case 170, the strength of the material of the holder member 215 itself is increased, and the holder member 215 can be prevented from moving in the vertical direction in the foam insulation material 172. Therefore, the vertical inclination of the rail device 210 when a load is applied to the rail guide 210, it can be prevented. As a result, the opening of the first rail guide (fixed rail) 211 can be prevented. the holder member 215, which performs the function of attaching the rail guide device 210, can also fulfill the function of reinforcing the rail guide device 210.

Moreover, the holder member 215 has a vertical flange portion 215e extending in the same direction as the direction of application of force to the rail guide device 210 when the sliding door is extended next to the lower surface of the rail guide device 210. Therefore, due to the shape of the element 215 holder, the strength is increased by increasing the vertical transverse secondary moment, and the contact area with the foamed thermal insulation material 172 in the horizontal direction vertically the flange portion 215E of the holder element 215 is increased, thereby making it possible to curb the displacement, e.g. authorizing the vertical movement of the flange portion 215E in the horizontal direction, by the resistance caused by contact with foam heat-insulating material 172. That is, by completing the shape of the holder element for attaching the rail device to the inner case, the strength of the material of the holder element itself can be increased, and the horizontal movement of the holder element in the foaming and heat-insulating material can be prevented. Thus, tilting the rail device in the horizontal direction when a load is applied to the rail device can be prevented.

Moreover, as shown in FIG. 23, the upper surface of the flange portion 215a of the holder member 215 and the lower surface of the inner housing 170 are directly brought into contact with each other, not through the heat-insulating material. Therefore, when a load is applied to the rail device 210, the displacement of the rail device 210 due to the load can be prevented not by means of soft foam insulation material 172, but by the holder element 215 made of durable material, thereby making it possible to obtain the reinforcing effect of the element 215 holder.

Moreover, since the holder member 215 can be directly attached to the surface of the inner case, the attachment point of the holder member 215 is easily controlled. Accordingly, the holder member 215 is securely attached to a desired specific location, and undoubtedly, the reinforcing effect of the holder member 215 can be obtained.

Moreover, as shown in FIG. 23, the lower surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170 are brought into direct contact with each other. Therefore, when a load is applied to the rail device 210, and there is a space between the bottom surface of the first rail (fixed rail) 211 and the upper surface of the inner case 170, the rail device 210 continues to be biased without any obstruction. However, due to direct contact between the lower surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170, there is no space between the lower surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170, and the rail 210 due to the load can be prevented by the element 215 of the holder attached to the foamed insulation material 17 2 of the inner case 170. Thus, undoubtedly, a reinforcing effect of the holder member 215 can be obtained.

However, under the influence of the spread of the step of attachment of the rail guide device 210 and the spread of products, etc. direct contact is optionally made between the lower surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170 in some cases. However, if the space between the lower surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170 is equal to or less than 1 mm, the worsening effect of the reinforcing element 215 of the holder is small compared with the case of direct contact, and if the space between the lower the surface of the first rail (fixed rail) 211 and the upper surface of the inner casing 170 is equal to or less than 1 mm, almost the same deis can be obtained The effect is the same as the effect in the case of direct contact.

EIGHTH EMBODIMENT

In the first to seventh embodiments, a description has been given for a case in which a storage container is extended by sliding a sliding type door (i.e., a storage container is sliding together with a sliding type door).

As another embodiment of a retractable type storage room, there is a type that does not have a retractable type door, but which extends a storage container from the storage chamber opening after opening the hinged type door (the storage container itself is retractable separately), and this type will be described in the eighth embodiment implementation.

24 is a front view of a refrigerator in accordance with an eighth embodiment of the present invention. As shown in FIG. 24, the refrigerator 500 includes two doors and includes a storage chamber divided into three zones in a thermally insulated housing 570.

The heat-insulated casing 570 is formed by a heat-insulating wall in which the space is formed by an inner casing 571 made by vacuum forming a polymer sheet, such as ABS, and an outer casing 572 made of a metal material, such as a steel sheet with a protective coating, and this space is filled with foam thermal insulation material 573 .

The above three storage chambers are contained in a thermally insulated housing 570. Specifically, the refrigerator 500 includes a refrigerator 510, a vegetable chamber 520 and a freezer 530. Note that in the figure, a rectangular dotted line indicates the opening region of each storage chamber. Moreover, a drawer type container, as will be described later, is contained in the vegetable chamber 520.

A thermally insulated door filled with foaming and heat-insulating material, such as urethane, is provided for the opening area of each storage chamber.

Specifically, the first hinged type door 511 is provided for closing openable areas of the refrigerating chamber 510 and the vegetable chamber 520. A hinge is provided on the edge of the first door 511 on the left side of the user so as to rotate around a vertical pivot rod.

A second pull-out type door 531 is also provided for the freezer 530.

In the refrigerator 500 of this embodiment with such a basic structure, the refrigerator 510 is cooled by a direct cooling system, and the vegetable chamber 520 and the freezer 530 are cooled by an intermediate cooling system.

25 is a vertical longitudinal sectional view of a refrigerator in accordance with an eighth embodiment of the present invention. As shown in FIG. 25, the refrigeration chamber 510 and the vegetable chamber 520 are separated by the upper separating body 515 in a thermally insulated housing 570. Moreover, the vegetable chamber 520 and the freezing chamber 530 are separated by the lower separating body 525.

In addition, the refrigerator 500 includes two coolers. Specifically, a first cooler 512 is provided on the back side of the rear surface 510a of the refrigerator 510. The rear surface 510a of the refrigerator 510 is cooled by heat transfer from the first cooler 512. The air inside the refrigerator 510 is cooled by the cooled rear surface 510a.

The first cooler 512 has a cooling tube 512a and a metal sheet 512b. The rear surface 510a of the refrigerator 510 is directly cooled by a metal sheet 512b attached to the back of the rear surface 510a in contact with the rear surface 510a.

In addition, the refrigerator 500 includes a second cooler 523 on the reverse side of the rear surface of the freezer 530. The inside of the freezer 530 is cooled by circulated chilled air leaving the second cooler 523.

The cooled air leaving the second cooler 523 is also supplied to the vegetable chamber 520, and under the control of opening and closing the air valve, for example, the temperature zone is maintained so as to represent the temperature zone between the temperature zone of the refrigerator 510 and the temperature zone of the freezer 530 .

Moreover, the drawer type storage container 521 is stored in the vegetable chamber 520. The user can slide out the storage container 521 after opening the first door 511.

Note that the storage container 521 described in the eighth embodiment corresponds to the storage capacity described in the first to seventh embodiments.

The refrigerator 500 of the eighth embodiment has features in that food products, etc. can be easily placed and removed in / out of the storage container 521, and attachment and detachment of the storage container 521 can be easily carried out. A storage container 521 and its extension structure will be described hereinafter with reference to FIG. 26 and FIG.

FIG. 26 is an enlarged perspective view showing the appearance of a storage container in accordance with an eighth embodiment.

As shown in FIG. 26, the storage container 521 is supported by a rail device 542. Moreover, the rail device 542 is elongated in the forward and backward directions and is movably supported in the forward and backward directions by a fastener 541 attached to the camera 520 for vegetables.

Specifically, the storage container 521 has a support portion 523 at both ends in the left and right directions, and more specifically, at both ends in the right and left directions in the lower part of the storage container 521, so as to protrude outward.

Moreover, the mounting holes 523a are formed in the supporting portion 523, so that the storage container 521 is detachably attached to the rail device 542.

Rail device 542 includes protrusions 543 protruding upward so as to engage with mounting holes 523a. Each of the protrusions 543 of the right and left rail guides 542 of the storage container 521 can be inserted and removed into / from the mounting holes 523a.

In this way, the extension unit 540 supports the removable storage container 521 in the vertical direction.

Moreover, the storage container 521 is made of a light transmitting polymer capable of recognizing stored objects in the storage container 521 from the side of the storage container 521. Those. the storage container 521 is made of a polymer with relatively high transparency.

Thus, for example, the type and quantity of foodstuffs stored in the storage container 521 can be easily recognized from the side of the storage container 521.

Moreover, the small container 522 is detachably attached to the upper part and the rear of the storage container 521. Thus, for example, the storage container 521 and the small container 522 can be selectively used. In addition, for example, the offset of the storage container 521 when heavy food is stored in the storage container 521 can be prevented by the small container 522.

In addition, the extension unit 540 is formed by a right and left rail device 542 of the storage container 521 and a fastener 541.

Note that the telescoping unit 540 described in the eighth embodiment corresponds to the rail guide device described in the first to seventh embodiments.

FIG. 27 is a flat section view showing a storage container 521 and a telescoping unit 540 in accordance with an eighth embodiment of the present invention.

As shown in FIG. 27, the extension unit 540 has a first rail (fastener) 541 and a rail device 542 located on the right and left sides of the storage container 521, respectively.

Moreover, each of the two rail guides 542 is formed by a second rail (intermediate rail) 542a and a third rail (support rail) 542b, respectively.

The third rail (support rail) 542b is a rail for directly supporting the storage container 521 and is movable in the forward and backward directions relative to the second rail (intermediate rail) 542a. Also, the second rail (intermediate rail) 542a is movable in the forward and backward directions relative to the first rail (fastener) 541.

With such a design of the rail device 542, the telescoping unit 540 can generally expand and slide forward and backward.

Specifically, when the first door 511 is rotated around the hinge pivot rod 550, as shown in FIG. 27, i.e. when the first door 511 is opened, the pulling unit 540 is opened by extension by the user, and the storage container 521 is pulled out of the vegetable compartment 520.

Moreover, the maximum extension distance of the storage container 521 is a distance sufficient to enhance the usability of the storage container 521.

Moreover, when using the rail guide device described in the first to seventh embodiments, instead of the telescoping unit 540 described in the eighth embodiment, it becomes difficult to pull out the storage container 521 when a force is applied to the rail guide device, thereby restraining the displacement of the deformed rail guide rail and maintaining satisfactory ease of use of the left-luggage office.

That is, as described in the eighth embodiment, even in the type of refrigerator, including a one-way hinged type door (pivot door) and pushing the storage container out of the opening area of the storage room after opening the hinged type door (the storage container itself is extended separately ), the storage tank is directly or indirectly supported by the third rail and extends. Therefore, the storage tank is included in the retractable type storage chamber, and, of course, the storage tank is also included in the present invention.

NINTH EMBODIMENT

A refrigerator having three doors is described as a ninth embodiment.

Another feature with respect to the eighth embodiment is that three doors are provided, and a description will mainly be given of another feature.

FIG. 28 is a front view of a refrigerator in accordance with a ninth embodiment of the present invention.

As shown in FIG. 28, refrigerator 700 is a refrigerator provided with three doors and provided with three storage chambers inside a thermally insulated housing 770.

Specifically, a refrigerator 700 is provided with a refrigerator 710, a vegetable camera 720 in which the temperature inside the camera can be controlled, and a freezer 730.

A heat-insulating door is provided on the opening area of each of the left-luggage offices. Specifically, the refrigerator 700 is provided with an upper door 711 covering the opening region of the refrigerating chamber 710 so as to freely open and close it, with a middle door 721 closing the opening region of the vegetable chamber 720 so as to open and close freely, and a lower door 731 covering the opening area of the freezer 730 so as to freely open and close. On Fig, a rectangular dashed line depicts the opening area of each of the storage chambers.

Moreover, the upper door 711 and the middle door 721 are made in the form of a hinged door, provided with hinges, respectively, on their left edge parts relative to someone standing facing the doors, and rotate around the pivot axes in the vertical direction.

Moreover, the cooling system of each of the three storage chambers is the same as the cooling system in the eighth embodiment. In other words, the refrigerator 710 is cooled by a direct cooling system, and the vegetable chamber 720 and the freezer 730 are cooled by an intermediate cooling system.

Moreover, a retractable storage container (not shown) is housed in the vegetable chamber 720 in the same manner as in the eighth embodiment, and is removably supported on a retractable assembly (not shown).

However, the refrigerator 700 in accordance with the ninth embodiment is provided with a door both on the refrigerator 710 and the vegetable chamber 720, which is a difference from the refrigerator 500 in accordance with the eighth embodiment.

In this case, a structure that is difficult to disclose in a case in which a force is applied to the rail device can be obtained by applying the rail device described in the first to seventh embodiments above to the refrigerator described in the ninth embodiment, however, deformation of the rail guide device can be prevented, and ease of use of the storage chamber can be maintained.

In other words, even in the case of a type in which a hinged type door (a pivoting door) is provided in one direction and the storage container is pushed out of the opening area of the storage chamber after opening the hinged type door (the storage container itself is independently pushed out) as described in in the ninth embodiment, the storage container is directly or indirectly supported on the third rail and extends, and this structure is included in the drawer type storage chamber, and it is obvious that it is included Chen in the present invention.

In the eighth and ninth embodiments, the direct cooling system and the intermediate cooling system are used as the cooling system of the three storage chambers. However, the cooling system of each of the storage rooms is not limited to any particular system during the implementation of the present invention.

For example, in the refrigerator 500 in accordance with the eighth embodiment, all of the refrigerating chamber 510, the vegetable chamber 520 and the freezing chamber 530 may be cooled in accordance with an intermediate cooling system. The same applies to the refrigerator 700 in accordance with the ninth embodiment.

Moreover, the type of storage rooms is not limited to the types described in the eighth and ninth embodiments. For example, the camera 520 for vegetables and the camera 720 for vegetables can be made in the form of a storage chamber, called a temperature-controlled chamber, for which the user can set the temperature range.

Moreover, a hinged type door, such as a first door 511 and a middle door 721, is a so-called type of one-way door opening. However, a hinged type door, such as a first door 511 and a middle door 721, may be a double-leaf type door in which two door sections located on the right and left sides rotate about pivot axes adjacent to the outer edge portions.

In other words, one first door 511 may be formed by two door sections. The same applies to the middle door 721.

In other words, the effect of preventing deformation of the rail guide device, which corresponds to the effect of the present invention, can be obtained regardless of the type of storage chamber and cooling system.

TENTH EMBODIMENT

29 is a front view of a refrigerator in accordance with a tenth embodiment of the present invention.

As shown in FIG. 29, the refrigerator 851 is a refrigerator that is provided with a double-leaf door and provided with a plurality of separated storage chambers inside a thermally insulated body 852.

Specifically, as storage chambers, starting from the upper part, there is provided a refrigerating chamber 853, an ice making chamber 854, a switching chamber 855, which is provided on a par with the ice making chamber 854 and has a temperature inside the chamber that is adjustable, a 856 chamber for vegetables and freezer 857.

The opening area of each of the storage rooms is provided with a heat-insulating door filled with foaming and heat-insulating material, such as urethane. Specifically, a refrigerator compartment 853 is provided with a left door 860a and a right door 860b covering an opening region of the heat insulated body 852 so as to freely open and close.

Moreover, an ice making chamber 854, a switching chamber 855, a vegetable chamber 856 and a freezer 857 are provided respectively with a door 861, a door 862, a door 863 and a drawer type door 864.

Other storage chambers relative to the refrigerator compartment 853 of these storage chambers are a retractable storage chamber.

Moreover, as shown in FIG. 29, the heat-insulated body 852 is formed by a heat-insulating wall, such that the foamed heat-insulating material 872 is filled into the space formed by the inner body 870, obtained by vacuum molding of a polymeric substance, such as ABS or the like, and the outer case 871 using a metallic material, for example, a coated steel sheet or the like.

A cooler (not shown) and a fan (not shown) are provided at the rear of the vegetable chamber 856 and the freezer 857, the cooler being driven by a compressor installed in the lower part of the main body of the refrigerator 851, and the cooled air is supplied from the cooler to each of left-luggage offices. Moreover, the storage chambers are adjusted to cool to a predetermined temperature in the storage chamber.

FIG. 30 is a perspective view showing a state in which a vegetable compartment is pulled out of a refrigerator in accordance with a tenth embodiment of the present invention.

As shown in FIG. 30, the vegetable chamber 856 is a retractable type storage chamber, and the container 863a forming the vegetable chamber is provided in a thermally insulated housing 852 so as to be able to be inserted and removed by the rail device 840.

Specifically, a container 863a is supported on a door frame 841 that is attached to a third rail (upper rail) 844 corresponding to a third rail (a moving rail) that is movable back and forth of the refrigerator 851 due to the second rail (an intermediate rail) rail) 843, corresponding to the middle rail rail, on its right and left sides (near side and far side in FIG. 30).

In this case, the second rail (intermediate rail) 843 is supported to move on the first rail (cabinet rail) 842 (not shown in FIG. 30) corresponding to the first rail (fixed rail) and the third rail (upper rail) 844 is movably supported on a second rail (intermediate rail) 843. Moreover, the first rail (rails) I guide the cabinet) 842 is attached to the inner surface of the inner housing 870.

Moreover, each of the first rail (cabinet rail) 842, the third rail (upper rail) 844, and the second rail (intermediate rail) 843 are supported by a rotating support member (not shown), and the first rail (rail) ) 842 is attached to the side wall of the inner casing 870 in a state in which the first rail (cabinet rail) 842, the third rail (upper rails) second guide rail) 844 and the second rail guide (intermediate rail guide) 843 are pre-assembled.

A door frame 841 supporting both the right and left sides of the container 863a is rigidly connected to the sliding door 863 by using a screw.

Moreover, the maximum extension distance of the sliding door 863 is the length at which the container 863a is fully open.

In other words, the maximum extension distance is the length at which the end surface at the rear (left side in FIG. 30) of the container 863a is located in front of the front of the outer case 871 when the vegetable compartment 856 is fully open.

In this case, it is easy to store the food product in the distal portion of the container 863a and remove the food product from the distal portion of the container 863a. Moreover, it is desirable to prevent collision of the container 863a with the sliding door 861 and the sliding door 862 in the upper part when removing and attaching the container 863a. Accordingly, it is possible to easily remove and attach the container 863a.

In this case, for the freezer 857, the maximum extension distance is determined in the same way as for the vegetable chamber 856, and the user can easily attach and disconnect the container forming the freezer 857.

The vegetable chamber 856 and the freezer 857 are extended to this position based on the extension of the rail guide 840.

FIG. 31 is a perspective view showing an appearance of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention.

As shown in FIG. 31, the third rail (upper rail) 844 is moved relative to the first rail (cabinet rail) 842 via the second rail (intermediate rail) 843. In other words, the rail device 840 generally extends and shifted.

Specifically, in the case of the vegetable chamber 856, the right and left door frames 841 and the third rail (upper rail) 844, which are connected to the sliding door 863, are advanced by the user based on the sliding door extension process 863.

Therefore, as shown in FIG. 30, a container 863a supported on a door frame 841 connected to the third rail (upper rail) 844 extends to the outside from the heat-insulated housing 852. In other words, the vegetable chamber 856 is fully open.

Moreover, each of the lengths of the first rail (cabinet rail) 842, the second rail (intermediate rail) 843 and the third rail (upper rail) 844 is a length at which the rear end portion of the container 863a is located in front of the front parts 871a of the outer casing in the case in which the container 863a is extended to the maximum extension position.

As described above, the refrigerator 851 in accordance with the tenth embodiment, in which the vegetable chamber 856, corresponding to the drawer type storage chamber, can be fully opened without losing ease of use, for example, the smoothness of the extension and the like, based on various technical features of the rail guide devices 840.

32 is a side view showing a state in which the vegetable compartment is pulled out of the refrigerator in accordance with a tenth embodiment of the present invention. Fig. 33 is a side view of the main elements of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention. Fig. 34 is a perspective view of the main elements of a rail device for a refrigerator in accordance with a tenth embodiment of the present invention.

As shown in FIG. 32, a container 863a forming a vegetable chamber 856 is provided so as to be able to be inserted and removed from the thermally insulated body 852 by rail device 840, and the vegetable chamber 856 is fully open.

Thus, the maximum extension distance of the sliding door 863 is the length at which the container 863a is fully open.

In other words, the maximum extension distance is the length at which the end surface in the far part of the container 863a is located in front of the front part 871a of the outer casing while the vegetable chamber 856 is fully open.

In this case, it is easy to store the food product in the distal portion of the container 863a and remove the food product from the distal portion of the container 863a. Moreover, it is desirable to prevent collision of the container 863a with the sliding door 861 and the sliding door 862 in the upper part when removing and attaching the container 863a. Accordingly, it is possible to easily remove and attach the container 863a.

In this case, for the freezer 857, the maximum extension distance is determined in the same way as for the vegetable chamber 856, and the user can easily attach and disconnect the container forming the freezer 857.

In this case, in the case of the state in which the sliding door 863 is extended to the maximum, the farthest portion corresponding to the end surface from the side of the storage chamber, the third rail (upper rail) 844 is located in front of the front portion 871a of the outer casing 871, and the end the surface in the back of the third rail (upper rail) 844 enters a position in which it is open from the outside of the heat-insulated casing 852. Therefore, I it is desirable to protect the open part in the farthest part (end surface from the side of the storage chamber) of the third rail rail (moving rail rail).

Moreover, since the farthest part corresponding to the end surface from the side of the storage chamber, the door frame 841 made of metal material is also located in front of the front part 871a of the outer case, it is desirable to protect the open part of the farthest part (end surface from the camera side storage) of the third rail (moving rail) while taking into account the case in which the sliding door 863 closes in a state in which the finger is inserted into the op formed between the end surface of the farthest portion of door frame 841 and the front portion 871a of the outer housing.

Thus, to increase safety, a protective element 846 of the rail guide is installed on the end surface from the storage chamber of the third rail guide (upper rail guide) 844.

Thus, it is possible to increase safety by closing the end surface on the side of the storage chamber of the third rail (upper rail) 844. Moreover, it is possible to eliminate the gap formed between the end surface on the side of the storage chamber of the door frame 841 and the front part 871a of the outer case , and it is possible to increase security.

However, there is a case in which it is not possible to completely eliminate the gap formed between the end surface from the side of the storage chamber of the door frame 841 and the front part 871a of the outer casing by means of the rail guide protective element 846.

As shown in FIG. 33 and 34, there is a case in which the extension amount is increased to such an extent that the end surface on the side of the storage chamber of the rail guide member 846 attached to the door frame 841 is located outside the front portion 871a of the outer case due to the tendency that that in recent years the number of stored products in the storage room has been increased.

In this case, since the depth dimension of the inner casing 870 to which the rail device 840 is attached has a limit, it is not possible to increase the depth of the rail element 846. In other words, since the depth of the rail guiding element 846 cannot be increased, a gap is formed between the farthest portion of the rail guiding element 846 and the front housing portion 871a of the outer case in which the sliding door 863 is extended to its maximum. If the sliding door 863 closes in a state in which the finger is inserted into the gap, there is a possibility that the finger gets pinched there.

In order to prevent pinching of the finger in the gap formed between the end surface from the storage chamber of the rail guide protective element 846 and the front housing front part 871a, the distal portion of the rail guide protective element 846 is provided with an inclined surface 846a made with a shape obtained by combining the upper inclined surface and outer inclined surface.

Thus, even if the finger is inserted into the gap formed between the farthest portion of the rail guide protective element 846 and the front portion 871a of the outer casing 871, the inclined surface 8 of the rail guide protective element is formed with a shape obtained by combining the upper inclined surface and the outer inclined surface. it is possible to pull the finger outward along an inclined surface from a gap formed between the farthest portion of the rail guide member 846 and her part 871a of the outer shell, and it is possible to improve safety during the closing of the sliding door 863.

In this case, it is preferable that the angle of the inclined surface 846a be an angle that is equal to or greater than 10 degrees and equal to or less than 45 degrees.

Specifically, if it is less than 10 degrees, the dimensions of the inclined surface 846a provided in the rail guide protector 846 are enlarged, and the dimensions of the rail rail protector 846 itself are enlarged. Therefore, there is a likelihood that the mold cannot be made with a predetermined size and, since the thickness of the mold is small on the side of the front end of the inclined surface, it is difficult to ensure the strength of the rail guide member 846.

Moreover, specifically, if it exceeds 45 degrees, there is a likelihood that the finger cannot be smoothly extruded to the outside along the inclined surface 846a in the case in which the finger is placed on the far portion of the rail guiding element 846.

Thus, it is possible to increase safety without increasing the rail guiding element 846 more than necessary by defining an inclined surface with a degree that is equal to or greater than 10 degrees and equal to or less than 45 degrees.

Moreover, the inclined surface 846a is made with a shape obtained by combining the upper inclined surface and the outer inclined surface. In the case of execution only in the form of an upper inclined surface, there is a possibility that a finger laid on the inclined surface 846a slides along the rail guide protective element 846 while closing the sliding door 863 and comes into contact with a portion located in the upper part of the protective element 846 rail guide. Thus, the finger laid on the inclined surface 846a can slide along the protective element of the rail and can be pulled out so that it is extruded to the outside while rising to the upper part while closing the sliding door 863 by combining the upper inclined surface with the outer inclined surface, thus additional security is possible.

Moreover, the door frame 841 is attached to the third rail (upper rail) 844, and the rail guide element 846 is rigidly attached to the end surface of the storage chamber of the door frame 841. The rail guide element 846 is attached to the door frame 841 by inserting a fastener profile 846b for the door frame provided at the rail guide security element 846 into the hole provided at the door frame 841. Since it is possible to securely fasten the security element nt 846 of the rail guide to the door frame 841, it is possible to attach a sliding door 863 on which the door frame 841 and the rail guide security element 846 are mounted to the rail guide 840 during manufacturing. Therefore, it is possible to achieve improvements in manufacturability.

Moreover, in the case of attaching a sliding door 863, on which the door frame 841 and the rail guide guard 846 are mounted, to the rail device 840, the door frame 841 is inserted into the locking profile provided in the third rail (upper rail) 844, and thereafter, the door frame 841 and the third rail (upper rail) 844 are secured by using a screw. Moreover, since the fastening part of the third rail (upper rail) 844 and the door frame 841 is made in the form of a locking profile, there is a possibility that the hand comes into contact with the locking profile during opening and closing the sliding door 863. Moreover since the fastening part of the door frame 841 and the third rail (upper rail) 844 is made in the form of a profile protruding from the surface, even if the fixing profile is not used, there is a possibility that Alezio or the like comes into contact during the opening and closing of doors.

The rail guide protector 846 prevents contact of a hand or the like with the fastener of the door frame 841 and the third rail (upper rail) 844 when opening and closing the sliding door 863 by closing the fastener of the door frame 841 and the third rail (upper rail) rail guide) 844, as well as protecting the end surface from the side of the storage chamber of the third rail guide (upper rail guide) 844.

Moreover, the rail guide security element 846 is configured to simultaneously close a hanging hole (not shown) for painting that is provided near the front end of the door frame 841. Typically, the door frame 841 uses a metal material and is painted to improve the appearance. neatness and the like refrigerator. An opening (not shown) for suspending door frame 841 is necessary during painting. Suspended dyeing work is performed by inserting a rod or the like into the hanging dyeing hole. In this case, since the suspension rod passes through the hole during painting, the outer coating does not attach to the hole, and leaks formed by the outer coating occur around the suspension hole.

It is not necessary to carry out work to remove streaks formed around the suspension hole for painting the door frame 841 by closing the suspension hole for painting the door frame 841 by the rail guide member 846.

Moreover, in the hanging hole for painting the door frame 841, on which the outer coating is not applied, the raw material is open and prone to corrosion, however, it is possible to prevent corrosion by closing the hanging hole for painting the door frame 841.

Moreover, if it comes into contact with a rail device 840 installed in the freezer, the rail device 840, cooled to the freezing temperature range, instantly freezes the water content in the finger, and there is a chance that the finger freezes to the rail a guiding device 840. Moreover, there is a likelihood that corrosion occurs as a result of adhering to aqueous contents or the like to an open rail device 84 0. It is possible to prevent the occurrence of corrosion by attaching the rail guide member 846.

Moreover, since the rail guide protector 846 is provided with the top surface of the rail guide protector 846c at approximately the same height as the top surface of the door frame 841a, the rail guide protector 846 does not interfere with the attachment of the container 863a during installation of the container 863a on door frame 841, and it is possible to achieve enhanced usability.

Moreover, since the upper surface 846c of the rail guard member 846 occupies a position that is approximately at the same height as the upper surface 841a of the door frame 841, it is possible to attach the container 863a to the rail guide guard 846, as shown in FIG. 32 , and it is possible to apply the load of the container 863a to the door frame 841 and the guard rail element 846 with good balance. As a result, it is possible to achieve an increase in the service life of the rail device 840.

Moreover, since the container 863a can be attached to the rail guide protector 846, it is possible to change the depth ratio between the door frame 841 and the rail guide protector 846 to an appropriate equilibrium. For example, the rail guide security element 846 made of a polymeric material is weaker in strength with respect to the door frame 841 made of metal material, however, in the case in which sufficient strength can be obtained even by making the door frame 841 the length is small, since the rail guide the device 840 is made of metal material, it is possible to achieve a reduction in the mass of the refrigerator by performing the depth of the rail guide element 846, by Foot of a polymeric material, is large and, conversely, by performing a depth of door frame 841 formed of a metal material is small. In other words, the freedom of choice of the lengths of the door frame 841 and the guard rail element 846 is increased.

Moreover, the material of the rail element 846 is defined by a polymeric material. Accordingly, even if the shape of the rail guiding element 846 is complex, it is possible to be molded and is easy to paint, so that no coating is required. Moreover, since the rail guide protector 846 can be made with a rounded shape and the material itself is flexible, it is possible to relieve pain during contact even in the case in which a finger or the like comes into contact with the rail guide protector 846.

Moreover, the rail guide protector 846 and the door frame 841 are matched with similar colors. Thus, it is possible to install the guard rail element 846 without highlighting it. Moreover, the white color is mainly used in the refrigerator to give a sense of accuracy, therefore, the main trend is the use of the door frame 841 with a white coating. Since the door frame 841 is white and white is mainly used in the container 863a, it is desirable to apply a white coating to the rail guide element 846 in the tenth embodiment. Therefore, since the rail guide protector 846 uses, in a general sense, an easily accessible polypropylene resin and the color of the resin itself is white, the rail guide protector 846 can be used without painting.

As described above, since the second rail (intermediate rail) 843 is used, the rail guide protective element 846 attached to the end surface from the storage chamber of the third rail (upper rail) 844 protects the open portion of the farthest part (end surface from the storage chamber side) of the third rail (upper rail) 844 even in the case in which the farthest part (end surface from the chamber side is stored I) third rail (top rail) 844 is positioned outside the front portion 871a of the outer housing 871, it is possible to prevent occurrence of a hand contact with the end surface of third rail (top rail) 844 so as to improve safety. Moreover, even in the case of maintaining a large volume of the storage chamber so as to allow full opening, it is possible to maintain ease of use, safety in use and the quality of the appearance of the storage chamber.

Next, a description will be given in detail of the internal structure, the method of attachment, and the like of the protective element of the rail in accordance with the present invention.

Fig. 35 is a sectional view showing the bonded state of the rail guiding member of the rail rail of the refrigerator and the door frame according to the tenth embodiment of the present invention. Fig. 36 is a perspective view of a protective member of a rail rail of a rail rail for a refrigerator according to a tenth embodiment of the present invention, viewed from a rear surface.

As shown in FIG. 35, the rail guide protector 846 is attached and fixed to the door frame 841 so as to cover the door frame 841 from above. In other words, the direction in which the load is applied and the direction of attachment of the rail guarding element are set in the same direction. Thus, it is possible to easily attach the rail guide protector 846 during attachment, and it is relatively easy to secure the rail rail protector 846 with respect to the load applied from the top of the rail rail protector 846 in the case in which the container 863a is mounted on the rail rail element 846.

Moreover, as shown in FIG. 35 and 36, in the rail guide protection element 846, at least a portion of the rail guide protection element 846 is brought into contact with the third rail (the moving rail) 844 (referring to a portion of the dashed line A in FIG. 35 and a portion of the dashed line A on Fig.36). Therefore, in the case in which the container 846a is mounted on the rail rail protector 846, it is possible to maintain, by the third rail (the moving rail rail) 844 corresponding to the rigid body, relative to the load applied from the top of the rail rail protector 846, and is it is possible to easily ensure the strength of the rail guide member 846.

More specifically, the lower surfaces of the ribs 900, 901, 905 and 906, mentioned below, are brought into contact with the upper surface of the third rail (moving rail) 844.

Moreover, as shown in FIG. 35 and 36, a rib is provided on the inside of the rail guide protective element 846. More specifically, the ribs 905, 906 and 907, made in one piece with the rail guide protection element 846, are provided on the inside of the rail guide protection element 846 sequentially from the front side (the front end of the inclined section) parallel to the longitudinal direction (depth direction of the refrigerator ) Moreover, the ribs 900 and 901, made in one piece with the rail guide protective element 846, are provided in the front part on the inner side of the rail guide protective element 846 at a predetermined distance in series from the front side (front end of the inclined section) in the vertical direction relative to the longitudinal directions (depth directions of the refrigerator), and ribs 902, 903 and 904, made in one piece with the protective element 846 of the rail guide, are provided in the rear for a predetermined sequentially distance from the front side (front end of the inclined portion) in a vertical direction with respect to the longitudinal direction (the depth direction in the refrigerator). Therefore, it is possible to prevent the deformation of the rail element 846, and it is possible to easily ensure the strength of the rail element 846 with respect to the load applied from the top of the rail element 846 in the case in which the container 863a is mounted on the rail element 846 .

In other words, the ribs 900, 901, 902, 903 and 904, provided in the vertical direction relative to the longitudinal direction of the rail guide protective element 846 (depth directions of the refrigerator), are configured so that their side surfaces are connected so as to make the side surface 930 protective of the rail element 846 difficult to open to the outside, it is possible to easily ensure the strength of the rail element 846 against the load applied from the upper hour Since the rail guiding element 846, the rail guiding element 846 is difficult to detach and it is possible to reliably protect the end surface of the rail device. In other words, the rail guide security element 846 made of a polymeric material is weaker in strength with respect to the door frame made of metal material, however, it is possible to compensate for the reduction in strength by providing a rib on the inside of the rail guide security element 846.

Moreover, as shown in FIG. 35, the rail guide protector 846 is provided with mounting parts connecting the rail guide protector 846 and the door frame 841 in a plurality (in particular, two) places. Specifically, the mounting parts 910 and 920 are provided near the rear end of the rail guiding element 846, and the mounting holes are provided, respectively, in proper places with respect to the mounting parts 910 and 920 in the door frame 841. Thus, the fastening strength of the rail element 846 is increased by installing these mounting parts 910 and 920 in the mounting holes respectively provided in the proper places, and the rail guide guard 846 is difficult to detach, yes ie if the load is applied in the transverse direction, vertical direction and diagonal direction, so it is possible to securely protect the end surface of the rail guiding device.

In the tenth embodiment, the rail guide protector 846 is configured such that the interior has a space (i.e., it is in linear contact with the rib), however, at least a portion of the interior can be configured such that the space is not provided (i.e., the polymer is filled so as to form a surface contact).

ELEVENTH EMBODIMENT

Fig. 37 is a sectional view showing a structural diagram of a rail device for a refrigerator in accordance with an eleventh embodiment of the present invention.

Comparing the rail guide device according to the eleventh embodiment with the rail guide device according to the tenth embodiment, it differs in the construction of the rail guide device. Specifically, as shown in FIG. 37, the rail device in accordance with the eleventh embodiment is different from the rail device 840 vertically divided into three tiers, for example, as shown in FIG. 31, and the rail device has three rail guides that arranged together in three rows. In this case, a description will be given mainly of another feature with respect to the tenth embodiment.

Specifically, as shown in FIG. 37, the rail device 400 is formed by a first rail (fixed rail) 401 provided with a flange portion 401a extending inwardly in the upper and lower parts of the flat body, the third rail (moving rail) 402, which is attached to the outer part of the support frame (not shown) supporting the container (not shown) by the support bracket 406, is narrower than the height of the first rail (n movable rail) 401, and has a flange portion 402a extending outward from its upper and lower parts, and a second rail (middle rail) 403, which is provided between the inner and outer rail rails 401 and 402, has a lower height, than the first rail (fixed rail) 401, and larger than the third rail (moving rail) 402, and provided with the flange portion 403a inward from its upper and bottom parts.

Specifically, the middle rail 403 is movable relative to the first rail (fixed rail) 401, and the third rail (movable rail) 402 is movable relative to the second rail (middle rail) 403, thus being generally sliding.

Fig. 38 is a sectional view showing a construction diagram of another rail device for a refrigerator in accordance with an eleventh embodiment of the present invention.

Another rail guide device 410 in accordance with the eleventh embodiment is different in construction of the rail guide device when compared with the rail guide device 840 in accordance with the tenth embodiment. Specifically, as shown in FIG. 38, another rail device 410 in accordance with the eleventh embodiment is different from a rail device 840 vertically divided in three tiers, for example, as shown in FIG. 31, and the rail device has three rail guides which are located together in three rows. In this case, a description will be given mainly of another feature with respect to the tenth embodiment.

Specifically, as shown in FIG. 38, in the rail device 410, since the middle rail 413, in which the cross-sectional shape is H-shaped, is movable relative to the first rail (fixed rail) 411 and the third rail (moving rail) 412 is movable relative to the second rail (middle rail) 413, the rail device 410 is generally extendable. In this case, the bearing corresponding to the movable member is omitted in FIG.

As shown in FIG. 37 and 38, however, various shapes exist for the shape of the rail device in the refrigerator provided with a retractable storage chamber and a sliding door located on the front surface of the storage chamber, the refrigerator provided with a rail device having a first rail (fixed rail rail), a third rail rail (moving rail) and a second rail rail (middle rail), which are located Thus, the longitudinal directions are identical, and are made with an elongated shape, and supporting the container forming the storage chamber, so as to be movable back and forth, moreover, the rail guide protective element attached to the end surface from the storage chamber side of the third rail guide (moving rail), protects the open part of the farthest part (end surface from the side of the storage chamber) of the third rail (moving rail ) based on the provision of the rail guide protection element 846, whereby it is possible to prevent the third rail (the moving rail) from coming into contact with the end surface of the rail, it is possible to increase safety and it is possible to maintain ease of use of the storage room, safety in use and quality appearance even in the case of maintaining a large volume of the storage chamber so that full opening is allowed.

Moreover, since the rail guide protector 846 is provided with an inclined surface 846a at the rear end portion, the extension amount is increased and the sliding door is pulled out until the farthest portion of the rail guide protector is located on the outer side of the front of the outer case, thus even in the case in which the finger is inserted into the gap formed between the farthest part of the protective element of the rail and the front of the outer case, it is possible to pull out the finger so that it is pushed outward due to the inclined surface, and it is possible to increase safety while closing the sliding door.

TWELFTH EMBODIMENT

Fig. 39 is a perspective view showing a method of attaching a rail device in accordance with a twelfth embodiment of the present invention.

The refrigerator door is formed by an outer door sheet (not shown), an inner door sheet 475 and foaming and heat-insulating material filled between them. The rail device 440 is connected to an element 474 for attaching a rail, attached to the inner sheet 475 of the door. Moreover, the inner door sheet 475 may be provided with a shape such as that of the rail fastening member 474, and the inner door sheet 475 and the rail fastening element may be in the form of an inner door sheet 475 corresponding to a single element.

In the twelfth embodiment, the rail device 440 is attached without using the door frame 841 shown in the tenth embodiment. The protection form of the end surface of the rail device can be achieved by closing the rail device 440 with a capacity of 863a, however, there is a case in which it is difficult to protect the end surface of the rail device 440 only with a capacity of 863a in accordance with the convenience of depth in the refrigerator. Moreover, if the end surface in the back of the rail 440 is protected by the container 863a, it is difficult to position the far end of the container 863a in front with respect to the front surface of the door for the directly located portion of the storage room, and the container 863a collides with the door 861 in the upper part during removing and attaching the container 863a, thereby impairing the removal of the container 863a.

Moreover, even if the container 863a is disconnected for cleaning, it is possible to ensure the safety of the rail guide device regardless of the presence of the container 863a.

Thus, even in the case in which the door frame 841 is not used, it is possible to protect the end surface of the rail by installing the rail guide protective element 846, and it is possible to ensure the safety of the refrigerator sliding door.

As described above, it is possible to provide a rail device that reaches a retractable type storage chamber having ease of use by installing a rail guide security element.

Moreover, various rail guides in accordance with the tenth to twelfth embodiments can be used as a sliding mechanism in the ice producing chamber 854 and the switching chamber 855 corresponding to the sliding type storage chamber, in addition to the vegetable chamber 856 and the freezing chamber 857.

INDUSTRIAL APPLICABILITY

As described above, since the refrigerator in accordance with the present invention can provide a refrigerator provided with a drawer type storage chamber for which ease of use is not lost even in a case where the storage chamber capacity is large, it is possible to apply to various types of refrigerators having various sizes, for example to the refrigerator for home use and for commercial use.

Moreover, the rail guide device in accordance with the present invention is suitable for the drawer mechanism of the storage chamber in various types of refrigerators having different sizes, for example for home use and for commercial use, is not limited to the refrigerator, but can be applied to any design having a retractable mechanism, without restriction on a food product, for example, to a kitchen complex, a kitchen cabinet, a dishwasher, a desk and the like.

Claims (37)

1. Refrigerator containing:
thermally insulated housing formed by the inner housing,
outer casing and foamed insulation material,
filled between the inner case and the outer case; and
retractable storage room
moreover, a rail guide device is provided inside the storage chamber, which is elongated, has a first rail guide, a second rail guide and a third rail guide and supports the storage container so that it moves forward and backward, and
wherein the rail guide device has a part for preventing deformation of the rail guide device and maintains a storage container on the third rail rail so that it moves back and forth, and
the second rail has flanges protruding to the right and left in the upper and lower parts in the longitudinal direction, and
the first rail is supported with the possibility of movement by means of a movable element, while having flanges made so as to protrude to a height exceeding the height of the lower flange of the second rail on the right and left sides in the longitudinal direction, and the third rail is supported in such a way to move the upper flange of the second rail rail by means of a movable element,
the rail device directly or indirectly supports the storage container on the third rail so that it moves forward and backward, while a fastening element is attached to the inner surface of the inner case, and a part for preventing the rail device from deformation is formed based on the previous connection between the portion of the flat surface of the fastener attached to the inner housing and the portion of the flat surface the outer portion of the first rail. 2. The refrigerator according to claim 1, in which the side surface of the first rail is attached to the fastener. 3. The refrigerator according to claim 1, in which the lower surface of the first rail rail is attached to the fastener. 4. The refrigerator according to claim 2 or 3, in which the connection between the first rail and the fastener is obtained by spot welding. 5. The refrigerator according to claim 1, in which the fastener has a section that is bent at least in one place and has a reinforcing part connecting the two surfaces that hold the bent section together and are not parallel. 6. The refrigerator according to claim 1, in which the second rail rail is made in such a way that the size in the vertical direction exceeds a predetermined size, and the second moment of the cross section in a cross section that is vertical to the longitudinal direction exceeds a predetermined value. 7. The refrigerator according to claim 1, in which the third rail guide has downward flanges on the right and left sides in the longitudinal direction, while holding the upper flange of the second rail guide between them, and a flange from the right and left flanges, which is closer to the inner side surface than the other flange is designed so as to pass in the lower part. 8. The refrigerator according to claim 1, in which at least one of the first rail and the third rail supports the second rail so that it moves in the longitudinal direction, by supporting the second rail from four directions in cross section which is vertical to the longitudinal direction. 9. The refrigerator according to claim 1, in which the protective element of the rail rail is provided on the end surface from the side of the storage chamber of the third rail rail. 10. The refrigerator according to claim 9, in which the protective element of the rail is provided with an inclined surface in the rear end portion. 11. The refrigerator of claim 10, in which the inclined surface has an angle that is equal to or greater than 10 ° and equal to or less than 45 °. 12. The refrigerator according to claim 9, further comprising: a retractable door; and a door frame attached to the sliding door, wherein the door frame is attached to the third rail, and the protective element of the rail is attached to the end surface from the side of the storage chamber of the door frame. 13. The refrigerator according to item 12, in which the protective element of the rail guide protects the hanging hole on the door frame, for coating the door frame. 14. The refrigerator according to item 12, in which the protective element of the rail and the door frame match in color. 15. The refrigerator according to item 12, in which the upper surface of the protective element of the rail is set at approximately the same height as the height of the upper surface of the door frame. 16. The refrigerator according to item 12, in which the protective element of the rail is attached and fixed to the door frame so as to fit on top of the door frame. 17. The refrigerator according to item 12, in which the protective element of the rail is made with many mounting parts connecting the protective element of the rail and the door frame. 18. The refrigerator according to claim 9, in which the protective element of the rail guide protects the mounting part between the third rail guide and the door frame. 19. The refrigerator according to claim 9, in which the protective element of the rail rail is made by using a polymer material. 20. The refrigerator according to claim 9, in which the length of each of the third rail, the first rail and the second rail is such a length that the distal end side of the container is located in front of the front of the outer case when the container is maximally extended. 21. The refrigerator according to claim 9, in which part of the protective element of the rail rail is brought into contact with the third rail rail. 22. The refrigerator according to claim 9, in which on the inner side of the protective element of the rail rail there is a rib. 23. The refrigerator according to claim 1, in which the auxiliary element for attaching the rail guide device to the inner casing is made on the side opposite the rail guide device, while placing the inner surface between them, and the auxiliary element has a flange that prevents deformation of the first rail rail downward, due to the fact that it passes below the surface of the first rail rail. 24. The refrigerator according to claim 1, in which the length of each of the first rail, the second rail and the third rail is such a length that the distal end part of the storage container is located in front of the front surface of the door in a position above the storage chamber when the storage tank is maximally extended. 25. Refrigerator containing:
a thermally insulated body formed by an inner case, an outer case, and a foam insulating material filled between the inner case and the outer case; and a retractable storage room,
moreover, a rail guide device is provided inside the storage chamber, which is elongated, has a first rail guide, a second rail guide and a third rail guide and supports the storage container so that it moves forward and backward, and
wherein the rail guide device has a part for preventing deformation of the rail guide device and maintains a storage container on the third rail rail so that it moves back and forth, and
the second rail guide has flanges protruding to the right and left in the upper and lower parts in the longitudinal direction,
the first rail is attached to the inner surface of the inner casing and is supported with the possibility of movement using a movable element, while having flanges made so as to protrude to a height exceeding the height of the lower flange of the second rail on the right and left sides in the longitudinal direction,
the third rail is supported in such a way as to move the upper flange of the second rail rail using a movable element,
the rail device directly or indirectly supports the storage container on the third rail so that it moves back and forth while attaching the first rail to the inner surface of the inner case, and
the portion for preventing deformation of the rail guide device is configured so that the vertical dimension of the second rail guide exceeds a predetermined size, so the second moment of inertia in a cross section that is perpendicular to the longitudinal direction exceeds a predetermined value. 26. Refrigerator containing:
a thermally insulated body formed by an inner case, an outer case, and a foam insulating material filled between the inner case and the outer case; and a retractable storage room,
moreover, a rail guide device is provided inside the storage chamber, which is elongated, has a first rail guide, a second rail guide and a third rail guide and supports the storage container so that it moves forward and backward, and
wherein the rail guide device has a part for preventing deformation of the rail guide device and maintains a storage container on the third rail rail so that it moves back and forth, and
the second rail has flanges protruding to the right and left in the upper and lower parts in the longitudinal direction, and
the first rail is attached to the inner surface of the inner casing and is supported with the possibility of movement using a movable element, while having flanges made so as to protrude to a height exceeding the height of the lower flange of the second rail on the right and left sides in the longitudinal direction,
the third rail is supported so as to move the upper flange of the second rail by means of a movable element,
the rail device directly or indirectly supports the storage container on the third rail so that it moves back and forth while attaching the first rail to the inner surface of the inner case, and
the part for preventing deformation of the rail guide device is designed so that the flange of the third rail is made in the form of a downward flange on the right and left sides in the longitudinal direction, while holding the upper flange of the second rail guide between them, and a flange which is from the right and left flanges closer to the side of the inner surface than the other flange extends to the bottom. 27. Refrigerator containing:
a thermally insulated body formed by an inner case, an outer case, and a foam insulating material filled between the inner case and the outer case; and a retractable storage room,
moreover, a rail guide device is provided inside the storage chamber, which is elongated, has a first rail guide, a second rail guide and a third rail guide and supports the storage container so that it moves forward and backward, and
wherein the rail guide device has a part for preventing deformation of the rail guide device and maintains a storage container on the third rail rail so that it moves back and forth, and
the second rail guide has flanges protruding to the right and left in the upper and lower parts in the longitudinal direction,
the first rail is attached to the inner surface of the inner casing and is supported with the possibility of movement using a movable element, while having flanges made so as to protrude to a height exceeding the height of the lower flange of the second rail on the right and left sides in the longitudinal direction,
the third rail is supported in such a way as to move the upper flange of the second rail with a movable element,
on the opposite side relative to the rail guide device there is an auxiliary element for attaching the rail guide device to the inner casing, while holding the inner surface between them,
the rail device supports the storage container on the third rail in such a way as to move freely back and forth, while the first rail is attached to the inner surface of the inner case, and
the part for preventing deformation of the rail guide device is designed so that the auxiliary element is located on the side of the heat-insulating device of the inner casing to which the rail guide device is attached, and the part for preventing deformation has a flange part extending at least to the central region of the lower surface of the first rail guide. 28. The refrigerator according to item 27, in which the upper surface of the flange part of the auxiliary device and the lower surface of the inner housing directly come into contact with each other. 29. The refrigerator according to item 27, in which the lower surface of the first rail rail and the upper surface of the inner casing directly come into contact with each other. 30. The refrigerator according to item 27, in which the auxiliary element has a vertical flange portion extending in the same direction as the direction of the force exerted on the rail device when the sliding door is extended, from the side of the lower surface of the rail device. 31. The refrigerator according to claim 30, wherein a constant distance is provided between the lower surface of the vertical flange part and the inner case opposing the lower surface of the vertical flange part. 32. The refrigerator according to claim 30, wherein the vertical flange portion is tilted in the opposite direction from the inside of the chamber. 33. The refrigerator according to item 27, in which the auxiliary element is made of metal material. 34. The refrigerator according to item 27, in which the auxiliary element has a reinforcing shape in a bent section between two angled planes. 35. The refrigerator according to item 27, in which the auxiliary element made of metal material is made with a variable shape. 36. The refrigerator according to claim 27, wherein the length of each of the first rail, the second rail and the third rail is such that the distal end side of the storage container is located in front of the front surface of the door in a position above the storage chamber when the storage tank is maximally extended. 37. A rail device mounted in a refrigerator including a thermally insulated body formed by an inner case, an outer case and a foamed heat-insulating material filled between the inner case and the outer case, and a retractable storage chamber, and a storage container supporting the storage chamber so that it moves back and forth, moreover
the rail device has a fixed element attached to the inner surface of the inner casing, and the first rail, the second rail and the third rail, which are arranged so that their longitudinal directions are identical, and have an elongated shape, and has a part to prevent deformation rail guide device
the second rail guide has flanges protruding to the right and left in the upper and lower parts in the longitudinal direction, and the lower flange is supported on the first rail rail so as to be movable in the longitudinal direction,
the first rail is attached to the fixed element and has flanges configured to protrude to a height exceeding the height of the lower flange of the second rail on the right and left sides in the longitudinal direction,
the third rail guide supports the upper flange of the second rail so as to move in the longitudinal direction, and supports the storage container, and the part to prevent deformation of the rail guide device is formed based on the previous connection between the flat surface portion of the fastening element attached to the inner casing, and section of the flat surface of the outer part of the first rail rail.

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