JPH06347161A - Refrigerator - Google Patents

Abstract

PURPOSE:To provide a refrigerator for which the attaching work of rails and reinforcing plates to be attached on the right and left side walls of a heat insulating box body is simplified, and at the same time, the attaching strength for both components is improved. CONSTITUTION:The title refrigerator is equipped with a heat insulating box body of which the front surface is open, and which is formed of an internal box 7, external box and an expandable heat insulating material to be filled between both internal external boxes, a drawer-form heat insulating door to open/close the front surface opening of the heat insulating box body, rails 86 which drawably supports the heat insulating door and fixing roller 84, and groove parts 75 which are provided on the right and left side walls of the internal box, and to which the rails are attached. In addition, a reinforcing plate 90 made of a metal is provided on the surface of the groove part 75 of the internal box, on the heat insulating material side, and on the groove part 75, a plurality of square holes 77, a round hole 78 in which a spindle 85 of the fixing roller 84 is inserted, and a supporting hole 79 for the reinforcing plate are provided. Also, on the reinforcing plate 90, a fixing hole 91 to fix the spindle 85 is provided at a front part, and a protuberance 95 which is inserted in the supporting hole on the groove part is provided at a rear part, and a through hole 93 is provided at a location corresponding with the square hole 77 respectively. On the rail 86, a plurality of claw parts 87 which are inserted in the square hole 77 on the groove part and the through hole 93 on the reinforcing plate are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION In the present invention, a refrigerating room is formed above a freezing room and a vegetable room is formed below, and each room is cooled by forcibly circulating cold air. The present invention relates to a drawer-type door support structure for a refrigerator.

[0002]

2. Description of the Related Art (i) Actual Kaihei 5-275 prior to the present invention
88 gazette, (ii) Japanese Utility Model Publication No. 62-14555 and (i
ii) Japanese Utility Model Publication No. 62-41184 discloses a refrigerator and a rail drawer in which rails for supporting a drawer-type door so as to be freely inserted and removed are attached to left and right side walls of an inner box.

[0003]

The refrigerator disclosed in the above publication (i) has a fitting projection having a locking claw for holding the wall surface of the inner box on the back surface of the rail, and a fitting projection fitted to the inner box. Since the projection is fitted with a fitting hole, and the annular rib surrounding the fitting hole is provided around the fitting projection to attach the rail to the inner box, it is possible to reduce the number of mounting parts and the mounting work. Although it can be simplified, there is no strength member because there is no reinforcing member to improve the mounting strength of the rail. On the other hand, in the rail drawer device shown in (ii) and (iii), the rails for supporting the drawer are attached to the inner box by the screw plates arranged on the side wall of the inner box and the surface of the inner box on the side of the heat insulating material. Therefore, it is possible to reduce the number of screws by one and improve the mounting strength of the rail and roller, but at least one screw and a tool such as a screwdriver are required to fix the rail and the screw plate, and the mounting workability is poor. There was a problem in terms of productivity improvement.

Therefore, an object of the present invention is to provide a refrigerator which simplifies the work of mounting the rails and the reinforcing plates mounted on the left and right side walls of the heat insulating box and improves the mounting strength of both parts.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a heat insulating box body having a front opening formed of an inner box, an outer box and a foamed heat insulating material filled between the inner and outer boxes, and a front opening of the heat insulating box body. A refrigerator provided with a drawer-type heat-insulating door that opens and closes, rails and fixed rollers that support the heat-insulating door so that the heat-insulating door can be pulled out freely, and grooves that are provided on the left and right sidewalls of the inner box and that mount the rails. A metal reinforcing plate is provided on the surface on the heat insulating material side, and a plurality of engaging holes, an insertion hole for inserting a support shaft of the fixed roller, and a supporting hole for supporting the reinforcing plate are provided in the groove portion, A fixing hole for fixing the support shaft is provided in the front portion of the reinforcing plate, and a through hole is provided in the rear portion at a position corresponding to the projecting portion inserted into the supporting hole of the groove portion and the engaging hole. A plurality of claws to be inserted into the engaging holes of the groove and the through holes of the reinforcing plate are provided. , Each of the claws is inserted into the engaging hole of the groove and the through hole of the reinforcing plate to attach the rail to the groove, and the protrusion of the reinforcing plate is inserted into the supporting hole of the groove to attach the reinforcing plate to the groove. A refrigerator is provided which is attached to a surface of a heat insulating material, and a spindle of the fixing roller is fixed to a fixing hole of the reinforcing plate through an insertion hole of the inner box.

[0006]

According to the present invention, the reinforcing plate functions not only as a reinforcing member for the rail and the front portion of the inner box but also as a mounting member for the fixed roller and the rail. Since this reinforcing plate is attached to the surface of the groove formed in the inner box on the side of the heat insulating material at the same time as mounting the rail, and can be temporarily fixed, the reinforcing plate before the foaming work and tapes, screws, etc. as temporary fixing parts for the rail can be omitted. . In addition, since the reinforcing plate can be supported at two points simply by inserting the protrusion of the reinforcing plate in this state into the support hole of the inner box, vibration and foaming when moving the inner box for foaming work. Even if a foaming pressure or the like is applied during the foaming of the heat insulating material, the problem that the reinforcing plate is removed from the surface of the inner box on the heat insulating material side is eliminated. By filling the insulation between the inner and outer boxes, the claws of the rail come into contact with the foam insulation and as a result are embedded inside the insulation, the reinforcement effect of the reinforcement plate and the rail support strength ( (Fixed strength) can be improved as compared with the conventional one.

[0007]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical side view of a refrigerator, FIG. 2 is a vertical front view of essential parts for showing cold air circulation to a refrigerating compartment and a vegetable compartment of the present invention, and FIG. 3 is an upper portion of an upper container of a freezing compartment. FIG. 4 is a cross-sectional plan view in a state of being horizontally sectioned, and FIG.
4 is a sectional view taken along line IV-IV, FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is a side view of the inner box as viewed from the left side, and FIG. 7 is a drawer-type door of the freezer compartment. FIG. 8 is a side view of a side surface of the supporting inner box as viewed from the outside (heat insulating material side), and FIG.
VIII-VIII sectional view of FIG. 9, and FIG. 9 is a IX-IX sectional view of FIG. 7.

In FIG. 1, reference numeral 1 is a household refrigerator, and this refrigerator has a heat-insulating box body 2 having a front opening which constitutes the main body thereof.
And doors 3, 4, and 5 that close the opening of this box. The heat insulating box body 2 is formed of an inner box 7 made of synthetic resin, an outer box 8 made of metal such as a coated steel plate, and a foamed heat insulating material 9 such as foamed polyurethane resin filled between the inner and outer boxes. Door 3
Is a pivotable door corresponding to a refrigerating compartment 13 described later, and the door 4
Doors 4 and 5 correspond to the freezer compartment 14, and a door 5 corresponds to the vegetable compartment 15.

Reference numerals 11 and 12 denote horizontal partition walls that partition the inside of the heat insulating box 2 into upper, middle, and lower stages. In this embodiment, the partition wall 11 is used.
Above, the refrigerating chamber 13 that is cooled to a temperature at which food does not freeze (eg, about 3 ° C.), the freezing chamber 14 above the partition wall 12 to a freezing temperature (eg, about −20 ° C.), and the lower part is refrigerated. The vegetable compartment 15 is cooled to a temperature (for example, about 7 ° C.) which is slightly higher than the temperature of the compartment and is suitable for storing vegetables. Further, a container 16 as a lower container for storing frozen food is attached to the door 4, and a container 17 for storing vegetables is attached to the door 5.

A partition plate 18 is arranged at the back of the freezer compartment 14, and a plate fin type evaporator 19 as a cooler and a blower 20 such as a propeller fan are arranged behind the partition plate 18.
Is formed in the cooler chamber 21.

Reference numeral 22 is for supplying the cool air cooled by the evaporator 19 to the freezing chamber 14 through the cool air outlet 22A and the cool air suction port 22B.
Is a refrigerating cold air duct for returning from the lower part to the lower part of the cooler chamber 21 (specifically, the lower part of the evaporator 19).
Is a cold air duct for cold storage, which penetrates the horizontal partition wall 11 and supplies cold air cooled by the evaporator 19 to the cold storage chamber 13,
24 communicates with the cold air duct 23 for refrigeration and has an outlet 24A.
And 24B are distribution cold air ducts for distributing cold air to the refrigerating compartment. Reference numeral 25 denotes a damper device, which is a so-called shape memory damper, which is arranged in the middle of the cool air duct (specifically, the connecting portion between the cold air duct 23 for refrigeration and the cool air duct 24 for distribution).

A machine chamber 33, in which a compressor 31 and an evaporation tray 32 are arranged, is formed in the lower part and the rear part of the heat insulating box 2. Reference numeral 35 denotes a dew pan disposed below the evaporator 19, and 36 denotes a defrosting heater such as a quartz glass tube heater or a Vycor tube heater arranged between the dew pan 35 and the evaporator 19. The platinum-based ceramic deodorizing catalyst is laminated on the surface of the glass tube of the defrosting heater 36 and baked. With this defrosting heater 36, the compressor 3
During operation 1 (that is, during cooling operation), the odorous component of the cool air that returns to the lower side of the evaporator 19 is adsorbed, and heat is exchanged with the evaporator again as clean cool air from which the odorous component has been removed. Can be made. Also, the defrosting heater 3
6 is energized (that is, during defrosting operation), the odorous components adsorbed during cooling operation are oxidized and decomposed by a platinum-based catalyst to activate the catalyst layer of the defrosting heater 36 and generate clean air. can do. That is, the defrosting heater has a deodorizing purification function of adsorbing an odor component and oxidizing and decomposing the adsorbed odor component to produce clean cool air.

Reference numeral 37 denotes a horizontal partition wall which extends from a cold air suction port 37A formed at the front portion of the lower surface of the horizontal partition wall 12 to a return port 37B formed at a rear portion of the horizontal partition wall 12 and below the evaporator. 12 is a cold air return passage that extends in the front-rear direction inside 12. Reference numeral 38 is a water pipe for guiding defrost water from the dew tray 35 to the evaporation tray 32.

Here, the outlet 2 of the distribution cold air duct 24
The cool air introduced into the refrigerating compartment 13 from 4A and 24B cools the refrigerating compartment 13 and then guides the guide duct 42 from the refrigerating compartment return port 41 formed in the lower right part of the back when the refrigerating compartment 13 is viewed from the front. It is led out to a cool air passage 44, which will be described later, formed on the right side of the cooler chamber 21.

Reference numeral 43 denotes a protrusion formed vertically on the back wall portion of the inner box 7 corresponding to the freezer compartment 14.
Is brought into contact with the back surface of the cooler cover 45 (more specifically, the positioning protrusion 46 formed on this back surface) as the second partition plate positioned behind the partition plate 18, and the space behind the cooler cover 45. Is divided into left and right. That is, the protrusion 4
3, a cooler chamber 21 is formed on the left side, and a cool air passage 44 described later is formed on the right side.

Then, the projection 43 and the cooler cover 45
The part surrounded by the inner box 7 and the inner box 7 has one end connected to the guide duct 42 of the refrigerating chamber 14 (specifically, a communication hole as a duct portion formed in the horizontal partition wall 11) and the other end to the vegetable chamber 15 (specifically, the horizontal partition). A cold air passage 44 for guiding the cold air in the refrigerating compartment 13 to the vegetable compartment 15 is provided so as to communicate with the communicating holes (ducts) formed in the wall 12). Therefore, the duct (that is, the cool air passage 44) for guiding the cool air from the refrigerating compartment to the vegetable compartment has a component (that is, the cooler cover 45) for forming the cooler compartment 21 at a predetermined position without using a special duct constituent member. It can be easily formed by attaching to, and the number of parts can be reduced. Further, since the cold air passage 44 is not buried in the heat insulating material 9, its assembling work performance is dramatically improved as compared with the conventional one, and the heat insulating performance of the back wall of the heat insulating box body 2 is partially ( There is no problem that the duct is buried).

Reference numeral 47 is a rail that is provided in the front-rear direction so as to face the upper portions of the left and right side walls of the inner box 7 corresponding to the freezer compartment 14 and supports an upper container 48, which will be described later, so that it can be taken in and out freely. The upper container 48 is partitioned left and right by a partition wall (not shown), and the left part is further partitioned front and back by a partition wall 50. And the compartment 51 on the right side has an intake 52 at the rear.
Is formed at the bottom and an intake 55 is formed at the rear of the left compartment 54. Also sections 54 and 56
A finger insertion port 57 for inserting and removing the container accommodated in each compartment is formed in the. The cold air outlet 22A of the partition plate 18 is formed at a position corresponding to the intakes 52 and 55 of the upper container 48, respectively. Reference numeral 58 is a small container made of metal (for example, aluminum) that is removably arranged in the compartment 51 of the upper container 48, and 59 is a resin ice tray with an upper opening that is also removably arranged in the compartment 54. ,
A resin ice storage container 60 is disposed in the compartment 56.
An upper surface opening of the ice tray 59 is closed by a lid 61 made of resin.

With the small container 58 placed in the compartment 51 of the upper container 48, the lower surface of the small container 58 and the upper container 48 are
A cold air passage 62 extending from the intake port 52 to the discharge port 53 is formed with the section 51 of the. That is, since the cold air passage 62 is formed using the space surrounded by the lower surface of the small container 58 and the compartment 51 of the upper container 48, a special duct for forming the cold air passage 62 is not required, and the inside of the freezing chamber is not required. The reduction of the effective storage volume can be suppressed to the minimum.

Further, the ice tray 59 is attached to the compartment 54 of the upper container 48.
In the state where the cold air passage 63 is arranged in the above state, the ice tray 59 and the section 54 of the upper container 48 form a cool air passage 63 extending from the intake 55 to the finger insertion port 57. That is, since the cold air passage 63 is formed using the space surrounded by the ice tray 59 and the compartment 54 of the upper container 48, a special duct for forming the cold air passage 63 is not necessary. Furthermore, since the ice tray 59 is covered with the lid 61 and the cold air cools the ice tray 59 only from the lower surface, the gap between the upper container 48 and the ice tray 49 (for details Insert container 57) to upper container 48
Since the cool air can be supplied also to the upper space and the lower container 16, the guide duct to the upper surface of the upper container 48 and the cool air guide duct dedicated to the lower container are not required, respectively, and the number of parts such as duct parts can be reduced.

Reference numeral 65 denotes a projection formed on the front surface of the lower surface of the compartment 51 of the upper container 48 so as to face the inside of the lower container 16. Reference numeral 66 denotes a projection when the upper container 48 and the lower container 16 are housed at predetermined positions. The hooking portion is formed on the upper portion of the lower container 16 so as to be located rearward by a predetermined distance of 65. That is, only the lower container 16 can be pulled out until the door 4 of the freezer compartment is pulled out by a predetermined distance, and when the door 4 is pulled out beyond this predetermined distance, the hook portion 66 of the lower container 16 is behind the protrusion 65 of the upper container 48. Therefore, both the upper and lower containers can be pulled out at the same time together with the door 4. Therefore, when the door 4 of the freezer compartment is pulled out by a predetermined distance or more, the upper container 48 is also pulled out together, so that the ice storage amount in the ice storage container 60 and the ice tray 59 are formed.
You can check the ice-making state of.

On the other hand, two continuous groove portions 71 and 72 are formed on the left and right side surfaces and the back surface of the inner box 7,
The left and right side surfaces and the back surface of the horizontal partition wall 11 are fitted into the groove portion 71, and the left and right side surfaces and the back surface of the horizontal partition wall 12 are fitted into the groove portion 72. Each groove 71 and 72
In order to insert the claw portions (not shown) formed on the side surfaces of the horizontal partition wall, a plurality of them (three on each of the left and right sides and four on the rear side in this embodiment) are arranged at substantially equal intervals. Individual) square holes 73 are formed.

On the other hand, the freezer compartment 14 and the vegetable compartment 15 of the inner box 7
On the left and right side faces corresponding to
Grooves 75 and 76 for mounting (only the rails of the vegetable compartment, not the rails of the freezing compartment are shown) are formed. Each of the groove portions 75 and 76 has a depth (depth) capable of accommodating the rail 86 and has a U-shaped cross section as shown in FIG. 9. In the groove portion 75 of the freezer compartment 14, a rail 8 described later is provided.
6 for inserting the claw portions 87 (6 in this embodiment is 2
Individual) engaging holes 77 and a support shaft 8 of a fixed roller 84 described later.
An insertion hole 78 for inserting 5 and a support hole 79 for inserting and supporting a projection 95 of a reinforcing plate 90 described later are provided. Similarly, in the groove portion 76 of the vegetable compartment 15, a plurality of (three in this embodiment) engaging holes 80 for inserting the claw portions 87 of the rail 86 described later and the support shaft 85 of the fixed roller 84 described later are provided. An insertion hole 81 for insertion and a support hole 82 for inserting and supporting the protrusion 95 of the reinforcing plate 90 are provided. The engagement holes 77, 80 and the insertion holes 78, 81 are not limited to the rectangular shape and the round shape in the figure, respectively, and may be appropriately selected according to the outer shapes of the claw portion and the support shaft.

Reference numeral 84 is attached to the rear surface of the drawer type door 4 of the freezer compartment 14 and is attached to the front portions of the left and right side walls of the inner box 7 in order to support the rails of the frame body that supports the container 16 so that it can be pulled out in the front-rear direction. This fixed roller 84 is attached to the inner box 7 by fixing a screw groove formed on the tip end side of the support shaft 85 to a fixed hole 91 of a reinforcing plate 90 described later via an insertion hole 81.

Reference numeral 86 denotes a freezer compartment rail which is attached to the groove 75 of the inner box 7. The rail 86 has an engaging hole 77 formed in the groove portion 75 of the inner box 7 and a through hole 93 of the reinforcing plate 90.
A plurality of (two in this embodiment) claw portions 87 to be inserted into
Positioning ribs 88 for positioning the claw portions 87 so as to be inserted into the engaging holes 77 of the groove portion 75 and the through holes 93 of the reinforcing plate 90 described later, and the engaging holes 77 when the heat insulating material is filled. The heat insulating material comes from the gap between the claw portion 87 and the inner box 7
Even if it leaks to the inside of the refrigerator, a leak preventing rib 89 is provided so as not to leak inside the rail 86.

Reference numeral 90 denotes a flat L-shaped metal reinforcing plate which is attached to the surface of the groove 75 on the side of the heat insulating material in order to improve the mounting strength of the rail 86 when mounting the rail 86 in the groove 75. 90, a fixing hole 91 for fixing the support shaft 85 of the fixing roller 84 to the front part, a projection 95 to be inserted into the support hole 79 of the groove part 75 to the rear part, and a groove part 75.
Through holes 93 are provided at positions corresponding to the engaging holes 77 of FIG. Further, the reinforcing plate 90 is provided with a reinforcing bead 92 for improving the structural strength, and further, a plurality of reinforcing flanges 94 are formed on the end sides to increase the area of contact with the heat insulating material 9 and the biting strength. ing.

The procedure for attaching the rail 86 will be briefly described. First, while the rail 86 is pushed in the rear in a horizontal state, the pawl portion 87 located at the rear portion of the rail is sequentially attached to the front pawl portion. The engaging holes 77 located on the rear side, and are sequentially inserted into the engaging holes 77 on the front side.
At the time of this insertion, the claw portion 87 is also inserted into the through hole 93 of the reinforcing plate 90, and is fitted into the engaging hole 77 by the positioning rib 88 without a gap. By this claw portion 87, the reinforcing plate 90 can be temporarily fixed to the surface of the inner box 7 on the heat insulating material side. Next, the protrusion 95 of the reinforcing plate 90 is inserted into and supported by the support hole 79 of the inner box 7, and the reinforcing plate 9
Support two points of 0. Vibration and foam insulation 9 when the inner box 7 is moved into the outer box 8 for foaming work in this state
The reinforcing plate 90 does not come off from the surface of the inner box on the side of the heat insulating material even if a foaming pressure or the like is applied at the time of foam growth.

The procedure for assembling the heat insulating box 2 and the foaming work in the above-mentioned structure will be briefly described. First, the assembled horizontal partition walls 11 and 12 are attached to the groove portion 7 of the inner box 7.
The rails 86 are fitted into the groove portions 75 of the rails 1 and 72, respectively. Next, parts such as the evaporator 19 and the defrosting heater 36 are assembled. Then, the inner box 7 in which each component is incorporated is housed in an outer box 8 bent in a gate shape, a bottom plate and a back plate (not shown) are attached, and a bottom plate and a back plate (if necessary, insert a nest) are incorporated into a foam jig. The undiluted solution of the foamed heat insulating material 9 is injected into the space between the inner and outer boxes from a heat insulating material injection hole (not shown) formed at a proper position in the outer box to foam. After a predetermined time, the heat insulation box 2 is completed by removing the jig and the nest. Then, the distribution cold air duct 24 and the cold storage cold air duct 23 are attached, and the cooler cover 45 and the partition plate 18 are attached to the front surface of the cooler chamber 21. By attaching the cooler cover 45, a cold air passage 44 for guiding cool air from the uppermost storage chamber (that is, the refrigerating chamber) 13 to the lowermost storage chamber (vegetable chamber) 15 is formed.

Further, the cold air passage 44 for guiding the cool air in the uppermost storage chamber (refrigerator compartment in the embodiment) 13 to the lowermost storage compartment (vegetable compartment) 15 is connected to the middle compartment of the inner box (freezer in the embodiment). (Chamber) 14 and a partition plate (cooler cover 45 in the embodiment) that constitutes the front surface of the cooler chamber 21 can be used to form the cooling air passage 44. It is possible to eliminate common parts (duct members) and to share parts and simplify assembly work.
It is possible to abolish the work of installing ducts in the back wall of the and reduce deterioration of heat insulation performance.

By filling the space between the inner and outer boxes 7 and 8 with the heat insulating material 9, the claw portion 87 of the rail 86 comes into contact with the foamed heat insulating material 9, and as a result, the claw portion 87 is buried inside the heat insulating material 9. Therefore, the supporting strength (fixing strength) of the rail 86 can be improved more than in the past, because of the dust reinforcing effect of the reinforcing plate 90.

[0030]

According to the present invention, the reinforcing plate functions not only as a reinforcing member for the rail and the front portion of the inner box but also as a mounting member for the fixed roller and the rail. That is,
Since the reinforcing plate is attached to the surface of the groove formed in the inner box on the side of the heat insulating material at the same time as mounting the rails and can be temporarily fixed, the reinforcing plate before the foaming work and the tape or the screw as a temporary fixing component of the rail can be omitted. In addition, since the reinforcing plate can be supported at two points simply by inserting the protrusion of the reinforcing plate in this state into the support hole of the inner box, vibration and foaming when moving the inner box for foaming work. Even if a foaming pressure or the like is applied during the foaming of the heat insulating material, the problem that the reinforcing plate is removed from the surface of the inner box on the heat insulating material side is eliminated. By filling the insulation between the inner and outer boxes, the claws of the rail come into contact with the foam insulation and as a result are embedded inside the insulation, the reinforcement effect of the reinforcement plate and the rail support strength ( (Fixed strength) can be improved as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a refrigerator.

FIG. 2 is a vertical cross-sectional front view of essential parts for showing the circulation of cold air to the refrigerator compartment and the vegetable compartment of the present invention.

FIG. 3 is a cross-sectional plan view showing a state in which the upper container of the freezer compartment is horizontally sectioned.

4 is a sectional view taken along line VI-VI of FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a side view of the inner box as viewed from the left side.

FIG. 7 is a side view of a side surface of an inner box that supports a drawer-type door of a freezer compartment as viewed from the outside (heat insulating material side).

8 is a sectional view taken along line VIII-VIII of FIG.

9 is a sectional view taken along line IX-IX in FIG. 7.

[Explanation of symbols]

 1 Refrigerator 2 Heat-insulating box 4, 5 Door (drawer-type door) 7 Inner box 8 Outer box 9 Foam insulation 14 Freezer 15 Vegetable room 75,76 Groove 77,80 Engagement hole 78,81 Insertion hole 79 Support hole 84 fixed roller 85 spindle 86 rail 87 claw 90 reinforcing plate 91 fixing hole 93 through hole 95 protrusion

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroyuki Yamakawa 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A heat insulating box body having a front opening formed of a foamed heat insulating material filled between the inner box, the outer box and both the inner and outer boxes, and a drawer type heat insulating door for opening and closing the front opening of the heat insulating box. In a refrigerator provided with rails and fixed rollers for freely supporting the heat-insulating door and grooves provided on the left and right side walls of the inner box to which the rails are attached, a surface of the groove part of the inner box on the heat insulating material side is A metal reinforcing plate is provided, and a plurality of engaging holes, an insertion hole for inserting a support shaft of the fixed roller, and a supporting hole for supporting the reinforcing plate are provided in the groove portion, and the reinforcing plate has a front portion. A fixing hole for fixing the support shaft is provided at a rear portion with a through hole at a position corresponding to the protrusion inserted into the supporting hole of the groove and the engaging hole, and the rail has an engaging hole for the groove and a reinforcement. Providing a plurality of claws to be inserted into the through holes of the plate, and engaging each claw with the groove The rail is inserted into the hole and the through hole of the reinforcing plate to attach the rail to the groove portion, and the protrusion of the reinforcing plate is inserted into the supporting hole of the groove portion to attach the reinforcing plate to the surface of the groove portion on the heat insulating material side, and the fixing is performed. A refrigerator characterized in that a supporting shaft of a roller is fixed to a fixing hole of the reinforcing plate through an insertion hole of the inner box.