JP2017032208A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of being reduced in manufacturing man-hour.SOLUTION: A refrigerator 1 in which a storage case 39 held by a door 31 opening and closing a freezing room 3 (storage room) is taken in and out together with the door 31 comprises: a heat insulation box body 6 which forms the freezing room 3 by charging a foamed heat insulator 12 between an inner box 11 having an opening part in the front and an outer box 10 covering the outside of the inner box 11; a frame 35 extending backward from right and left ends of the door 31 to support the storage case 39; and a fixed rail 32 fitted to both side walls 3a of the inner box 11 while extending forward and backward to guide the frame 35. While engagement claws 32c, 32d are projected at a front part and a rear part of one of the fixed rail 32 and inner box 11 respectively, and engagement holes 11c, 11d engaging the engagement claws 32c, 32d are formed in the other respectively, and a front part of the fixed rail 32 is fixed to the inner box 11 by screwing.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a refrigerator in which a storage case can be taken in and out together with a door that opens and closes a storage chamber.

  A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has a heat insulation box which fills a foam heat insulating material between an inner box having an opening on the front and an outer box covering the outside of the inner box to form a storage room. The front surface of the storage chamber is opened and closed by a drawer-type door, and the door is provided with a frame extending rearward from the left and right ends. The frame supports a storage case for storing stored items. Thereby, a storage case is integrated with a door. A moving roller supported by a horizontal shaft is provided at the rear end of the frame.

  Fixed rails extending in the front-rear direction are attached to both side walls of the inner box of the storage chamber. The fixed rail is formed in a U-shaped cross-section with an opening on one side surface (the surface on the storage case side) and guides the moving roller of the frame.

  In the refrigerator having the above configuration, when the door is pulled forward, the moving roller of the frame rolls on the fixed rail to open the front surface of the storage chamber, and the storage case is pulled forward together with the door. Thereby, the user can take in and out the stored item with respect to the storage case.

Japanese Utility Model Publication No. 60-27913 (first page, second page, FIG. 3)

  Generally, the fixed rail is screwed to the inner box at the front and rear. After that, an outer box is attached to the outside of the inner box, and a foam heat insulating material is filled between the inner box and the outer box to form a heat insulating box. However, since the rear portion of the fixed rail is separated from the opening on the front surface of the inner box, it takes time to fix the screws, and there is a problem that the number of manufacturing steps of the refrigerator increases.

  An object of this invention is to provide the refrigerator which can reduce a manufacturing man-hour.

In order to achieve the above object, the present invention provides:
In a refrigerator in which a storage case held by a door that opens and closes a storage chamber is put in and out with the door,
A heat insulating box that fills a foam heat insulating material between an inner box having an opening on the front surface and an outer box that covers the outside of the inner box to form the storage chamber;
A frame that extends rearward from the left and right ends of the door and supports the storage case;
Fixed rails that extend forward and backward on both side walls of the inner box and guide the frame;
An engaging claw projecting from one front and rear of each of the fixed rail and the inner box, and an engaging hole engaging with the engaging claw at the other front and rear, respectively,
The front portion of the fixed rail is screwed to the inner box.

  According to this configuration, for example, the engaging claws protruding from the front part and the rear part of the rail engage with the engaging holes provided in the front part and the rear part of the side wall of the inner box. The front part of the rail is screwed to the inner box. Thereafter, a foam heat insulating material is filled between the inner box and the outer box to form a heat insulating box.

  In the refrigerator having the above-described configuration, the present invention is preferably provided with a protrusion that protrudes from the back surface of the inner box and engages the rear end of the fixed rail.

  In the refrigerator having the above-described configuration, it is preferable that the tip of the protruding portion on the side wall be chamfered.

  According to the present invention, in the refrigerator configured as described above, the engaging claw is disposed on the fixed rail, the engaging hole is disposed on the inner box, and the length of the engaging hole on the rear portion of the inner box in the front-rear direction. It is preferable to make the length longer than the length in the front-rear direction of the engagement hole at the front.

  In the refrigerator configured as described above, the engagement length in the front-rear direction of the engagement claw at the rear portion of the fixed rail is preferably longer than the engagement length in the front-rear direction of the engagement claw at the front portion.

  In the refrigerator having the above-described configuration, it is preferable that the fixed rail is in close contact with the engagement hole at least 5 mm or more around the engagement hole.

  According to the present invention, the engaging rails project from the front and rear portions of the fixed rail and the inner box for guiding the door frame and engage the engaging claws at the other front and rear portions, respectively. Are provided, and the front of the fixed rail is screwed to the inner box. Thereby, the fixed rail can be attached to the inner box without screwing the rear portion of the fixed rail. Further, it is possible to reduce deformation of the fixed rail due to the foaming pressure generated at the time of filling the foam heat insulating material, and to prevent the fixed rail from dropping from the inner box. Therefore, it is possible to reduce the number of manufacturing steps of the refrigerator and improve workability.

The perspective view which shows the inside of the refrigerator of 1st Embodiment of this invention. Sectional drawing on the right side showing the main part of the refrigerator according to the first embodiment of the present invention. Top surface sectional drawing which shows the principal part of the refrigerator of 1st Embodiment of this invention. Front sectional drawing of the moving mechanism of the door of the freezer compartment of the refrigerator of 1st Embodiment of this invention. The side view which shows the engaging claw of the rear part of the fixed rail of the freezer compartment of the refrigerator of 1st Embodiment of this invention Front sectional drawing which shows the fixed rail of the freezer compartment of the refrigerator of 1st Embodiment of this invention Top sectional drawing which shows the engaging claw of the left side wall rear part of the freezer compartment of the refrigerator of 2nd Embodiment of this invention. The side view which shows the engaging claw of the rear part of the fixed rail of the freezer compartment of the refrigerator of 3rd Embodiment of this invention

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of the inside of the refrigerator according to the first embodiment of the present invention. The refrigerator 1 has a heat insulating box 6 filled with a foam heat insulating material 12 (see FIG. 2) such as urethane foam between an outer box 10 formed of a coated steel plate and an inner box 11 formed of a resin molded product. .

  A plurality of inlets (not shown) and a plurality of vent holes (not shown) are opened on the back surface of the outer box 10. The stock solution of the foam heat insulating material 12 is injected between the outer box 10 and the inner box 11 through the injection port. When the foam heat insulating material 12 is filled between the outer box 10 and the inner box 11, the air between the outer box 10 and the inner box 11 and the gas generated at the time of filling are formed in the heat insulating box 6 through the vent holes. Exhausted to the outside.

  A refrigerator compartment 2 (storage compartment) is formed in the upper part of the refrigerator 1 by the heat insulating box 6. The front surface of the refrigerator compartment 2 is opened and closed by a rotating door 21 (see FIG. 2). A plurality of support portions 22 extending in the front-rear direction are provided on both side walls 2a of the refrigerator compartment 2 so as to protrude vertically. A tray 23 made of a transparent resin is detachably installed on the support portion 22, and a stored item (not shown) is placed on the tray 23.

  Below the refrigerator compartment 2, a freezer compartment 3 (storage compartment) is arranged through a partition wall 11a filled with a heat insulating material. Below the freezer compartment 3 is arranged a vegetable compartment 4 (storage compartment) via a partition wall 11b filled with a heat insulating material. Fixed rails 32 (described later) are attached to both side walls 3 a of the freezer compartment 3 and both side walls 4 a of the vegetable compartment 4. The refrigerator compartment 2 and the vegetable compartment 4 are connected via a communication path (not shown).

  A machine room 19 in which a compressor (not shown) for operating the refrigeration cycle is disposed below the rear portion of the heat insulating box 6. The back surface of the machine room 19 is covered with a machine room back plate (not shown).

  The refrigeration cycle is operated by driving the compressor, and cold air is generated. The stored items in the refrigerator compartment 2 and the vegetable compartment 4 are refrigerated and stored in the freezer compartment 3 by the cold air.

  FIG. 2 is a right side sectional view showing details of the freezer compartment 3 and the vegetable compartment 4. In the freezer compartment 3 and the vegetable compartment 4, storage cases 39 and 49 for storing stored items are provided. The front surfaces of the freezer compartment 3 and the vegetable compartment 4 are opened and closed by drawer-type doors 31 and 41 that slide back and forth integrally with the storage cases 39 and 49, respectively.

  The freezer compartment 3 is provided with a moving mechanism 30 that slides the door 31. Similarly, the vegetable compartment 4 is provided with a moving mechanism 40 that slides the door 41. Since the moving mechanism 40 is configured in the same manner as the moving mechanism 30, the moving mechanism 30 will be described below as a representative.

  The moving mechanism 30 includes a frame 35, a fixed rail 32, and a fixed roller 33. The fixed rail 32 is attached to both side walls 3a of the inner box 11 of the freezer compartment 3, and is formed to extend forward and backward by resin. The fixed roller 33 is disposed in front of the fixed rail 32, has a horizontal rotation shaft, and is pivotally supported on both side walls 3 a of the inner box 11.

  The frame 35 is made of metal and extends rearward from the left and right ends of the door 31. A storage case 39 is placed on both frames 35. A moving roller 36 that has a horizontal rotation shaft and rolls in the fixed rail 32 is provided at the rear of the frame 35. The depth of the frame 35 is formed longer than the depth of the storage case 39.

  FIG. 3 shows a top cross-sectional view of the vicinity of the left side wall 3 a of the freezer compartment 3. FIG. 4 is a front sectional view of the moving mechanism 30. The fixed rail 32 is formed in a U-shaped cross-section with one side surface (the surface on the storage case 39 side) opened, and has an upper rail 32a and a lower rail 32b extending in front and rear and parallel to each other. The fixed rail 32 is sandwiched between projecting portions 3b arranged vertically on the side wall 3a.

  Further, in the vicinity of the side wall 3a, a protruding portion 11g that protrudes forward from the back surface of the inner box 11 is provided. The tip end portion 11k on the side wall 3a side of the protruding portion 11g is chamfered. The fixed rail 32 is fitted between the protruding portion 11g and the side wall 3a, and the rear end of the fixed rail 32 is locked by the protruding portion 11g.

  Engaging claws 32c and 32d are provided at the front and rear portions of the fixed rail 32, respectively. The engaging claws 32c and 32d extend sideways (outer box 10 side) and bend backwards. The engagement length L2 in the front-rear direction of the rear engagement claw 32d is formed longer than the engagement length L1 in the front-rear direction of the front engagement claw 32c.

  Engagement holes 11c and 11d are opened in the front part and the rear part of the side wall 3a of the inner box 11, respectively. The engagement holes 11c and 11d are formed in a substantially rectangular shape in plan view, and the length L4 in the front-rear direction of the rear engagement hole 11d is longer than the length L3 in the front-rear direction of the front engagement hole 11c. The engaging claws 32c and 32d are engaged with the engaging holes 11c and 11d, respectively.

  Between the inner box 11 and the outer box 10, a metal reinforcing plate 40 is disposed in contact with the inner box 11 so as to face the front portion of the fixed rail 32. The reinforcing plate 40 is provided with screw holes 40a and through holes 40b on the front and rear sides. A through hole 11p is opened in the inner box 11 so as to overlap the screw hole 40a, and a boss 32h protruding from the front portion of the fixed rail 32 toward the side is inserted into the through hole 11p. Then, a screw (not shown) is inserted into the insertion hole (not shown) of the boss 32h from the inner side (freezer compartment 3 side) of the inner box 11 and screwed into the screw hole 40a of the reinforcing plate 40, thereby fixing the fixed rail 32. The front part is screwed to the reinforcing plate 40.

  The through hole 40b behind the screw hole 40a is provided so as to overlap the engagement hole 11c, and the engagement claw 32c is inserted through the engagement hole 11c and the through hole 40b. Thereby, the engaging claw 32c engages with the inner box 11 and the reinforcing plate 40 behind the position of screwing.

  FIG. 5 shows a side view of the engaging claw 32d of the fixed rail 32 of the left side wall 3a as viewed from the outside of the inner box 11 (foamed heat insulating material 12 side). FIG. 6 shows a front sectional view through the engaging claw 32d of the fixed rail 32 of the left side wall 3a. The engagement length L2 in the front-rear direction and the length H2 in the up-down direction of the engagement claw 32d are, for example, 5.5 mm and 6 mm, respectively. The length L4 in the front-rear direction and the length H4 in the up-down direction of the engagement hole 11d are, for example, 19.5 mm and 8 mm, respectively.

  The fixed rail 32 is in close contact with a region having a length H3 (see FIG. 5, 6.5 mm in this embodiment) above and below the engagement holes 11c and 11d at least around the engagement holes 11c and 11d. In the present embodiment, the length H3 is formed to be 6.5 mm, but if it is 5 mm or more, as will be described later, the stock solution of the foam heat insulating material 12 through the engagement holes 11c and 11d is moved to the freezer compartment 3 side. Can prevent leakage.

  In FIG. 4, the rear portions of the left and right frames 35 are connected by a rod-like connecting member 35a. The connecting member 35 a is formed in a U-shape in plan view with the rear open, and supports the rear portion of the storage case 39. The bending of the left and right frames 35 can be reduced by the connecting member 35a.

  A rail portion 37 is formed on the upper portion of the frame 35 so as to extend forward and backward and protrude toward the side wall 3a. A stopper (not shown) that protrudes downward is provided at the rear portion of the rail portion 37.

  The moving roller 36 has a ball bearing 36a and is supported by a shaft portion 35b protruding from the frame 35 toward the side wall 3a. The outer ring 36b of the ball bearing 36a rolls on the inner surface of the fixed rail 32, and the fixed roller 33 rolls on the lower surface of the rail portion 37, whereby the door 31 is put in and out.

  In the moving mechanism 30 configured as described above, the door 31 detached from the freezer compartment 3 has the stopper of the frame 35 straddling the upper side of the fixed roller 33 from the front, and the moving roller 36 of the frame 35 includes the upper rail 32a and the lower rail of the fixed rail 32. 32b. When the door 31 is pushed in, the rail portion 37 slides along the fixed roller 33, and the moving roller 36 slides along the fixed rail 32. When the door 31 is further pushed in this state, the door 31 comes into contact with the peripheral edge of the front opening of the freezer compartment 3 and the front surface of the freezer compartment 3 is closed.

  When the closed door 31 is pulled forward, the moving roller 36 rolls on the lower rail 32b of the fixed rail 32, and the fixed roller 33 in contact with the rail portion 37 rotates. Thereby, the storage case 39 is pulled out forward. When the stopper of the frame 35 comes into contact with the fixed roller 33 from the rear, the sliding movement of the door 31 stops.

  When the door 31 is pulled forward, the front portion of the frame 35 receives a load downward and the moving roller 36 receives a load upward due to the weight of the stored item in the storage case 39. Further, the moving roller 36 contacts the upper rail 32 a of the fixed rail 32 with the fixed roller 33 as a fulcrum. Thereby, the door 31 is supported by the fixed roller 33 and the moving roller 36 which are separated in the front-rear direction, and the vertical rotation of the door 31 can be prevented.

  Next, the manufacturing method of the heat insulation box 6 is demonstrated. First, the rear end portion of the fixed rail 32 is inserted between the protruding portion 11g and the side wall 3a so that the angle formed between the side wall 3a of the inner box 11 and the fixed rail 32 is about 30 °. The front part is rotated toward the side wall 3a. When the fixed rail 32 is pushed rearward along the side wall 3a, the rear end portion of the fixed rail 32 disposed between the protruding portion 11g and the side wall 3a is positioned by the protruding portion 11g and the side wall 3a, and The engaging claws 32c and 32d engage with the engaging holes 11c and 11d, respectively.

  At this time, the length L4 in the front-rear direction of the rear engagement hole 11d is longer than the length L3 in the front-rear direction of the front engagement hole 11c. Thereby, before the front engaging claw 32c is inserted into the engaging hole 11c, the rear engaging claw 32d is inserted into the engaging hole 11d. Therefore, since the rear part of the fixed rail 32 is positioned when moving the fixed rail 32 rearward along the side wall 3a, workability at the time of attaching the fixed rail 32 to the inner box 11 can be improved.

  The engagement length L2 of the engagement claw 32d in the front-rear direction is longer than the engagement length L1 of the engagement claw 32c in the front-rear direction. Thereby, before the front engaging claw 32c starts to engage with the engaging hole 11c, the rear engaging claw 32d starts to engage with the engaging hole 11d. Therefore, when the fixed rail 32 is moved rearward along the side wall 3a, the rear portion of the fixed rail 32 is reliably positioned, so that the workability when the fixed rail 32 is attached to the inner box 11 can be further improved. it can.

  Further, since the tip portion 11k of the protruding portion 11g is chamfered, the fixed rail 32 inclined with respect to the side wall 3a in contact with the tip portion 11k is rotated to easily position the rear end portion of the fixed rail 32. be able to.

  Then, a screw is inserted into the insertion hole of the boss 32 h from the inner side of the inner box 11 (freezer compartment 3 side), and a screw is screwed into the screw hole 40 a of the reinforcing plate 40, so that the front portion of the fixed rail 32 is connected to the reinforcing plate 40. Screw on.

  After that, the outer box 10 is arranged so as to cover the outer side of the inner box 11, and the inner box 11 is placed on a foaming jig (not shown) so that the opening on the front surface of the inner box 11 faces down. . At this time, a predetermined gap is formed between the fixed rail 32 and the foaming jig. Thereby, interference with a foaming jig and the fixed rail 32 can be prevented. Thereafter, the stock solution of the foam heat insulating material 12 is injected between the outer box 10 and the inner box 11 through the inlet of the outer box 10.

  When the stock solution of the foam heat insulating material 12 is foamed, the foam heat insulating material 12 is filled between the inner box 11 and the outer box 10. Air between the inner box 11 and the outer box 10 or gas generated during filling is exhausted from the vent hole to the outside of the heat insulating box 6. At this time, since the engaging claws 32c and 32d are embedded in the foam heat insulating material 12, the fixed rail 32 is prevented from coming off from the inner box 11. Thereby, the heat insulation box 6 in which the fixed rail 32 is attached to the inner box 11 is formed.

  At this time, the engaging claws 32c and 32d project from the front and rear portions of the fixed rail 32, respectively, and the engaging claws 32c and 32d engage with the front and rear portions of the side walls 3a of the inner box 11, respectively. Joint holes 11c and 11d are provided. Thereby, the screwing of the rear part of the fixed rail 32 apart from the opening part of the front surface of the inner box 11 can be omitted. Therefore, the manufacturing man-hour of the refrigerator 1 can be reduced.

  Further, the fixed rail 32 is fixed by screwing the front portion of the fixed rail 32, engaging the engaging claws 32c and 32d with the engaging holes 11c and 11d, and locking the rear end of the fixed rail 32 by the protruding portion 11g. The side face extending in contact with the inner box 11 and extending back and forth can counter the foaming pressure when the foam heat insulating material 12 is filled. Thereby, a deformation | transformation of the fixed rail 32 can be reduced and the fluctuation | variation of the distance between the left and right fixed rails 32 can be prevented. Therefore, the clearance S (see FIG. 4) between the fixed rail 32 and the frame 35 can be secured, and the door 31 can be prevented from being opened and closed.

  Further, it is possible to prevent the fixed rail 32 from falling off from the inner box 11 due to the foaming pressure when the foam heat insulating material 12 is filled.

  In addition, the fixed rail 32 is in close contact with a region of 5 mm or more above and below the engagement holes 11c and 11d. Thereby, when the foam heat insulating material 12 is filled between the inner box 11 and the outer box 10, leakage of the stock solution of the foam heat insulating material 12 to the freezer compartment 3 side through the engagement holes 11c and 11d is prevented. be able to. Therefore, it is not necessary to provide a seal member or the like in the gap between the engagement claw 32c and the engagement hole 11c and the gap between the engagement claw 32d and the engagement hole 11d, and the manufacturing man-hour of the refrigerator 1 is reduced. Can do.

  If the fixed rail 32 is in close contact with the upper and lower sides of the engagement holes 11c and 11d at least around the engagement holes 11c and 11d, the freezing chamber 3 for the stock solution of the foamed heat insulating material 12 through the engagement holes 11c and 11d. Leakage to the side can be prevented.

  According to this embodiment, the engaging claws 32c and 32d project from the front and rear portions of the fixed rail 32, respectively, and the engaging claws 32c and 32d are respectively engaged with the front and rear portions of the side walls 3a of the inner box 11. Engaging engagement holes 11c and 11d are provided. The front portion of the fixed rail 32 is screwed to the inner box 11. Accordingly, the fixed rail 32 can be attached to the inner box 11 without screwing the rear portion of the fixed rail 32. Therefore, it is possible to reduce the number of manufacturing steps for the refrigerator.

  Further, the fixed rail 32 is fixed by screwing the front portion of the fixed rail 32, engaging the engaging claws 32c and 32d with the engaging holes 11c and 11d, and locking the rear end of the fixed rail 32 by the protruding portion 11g. The side face extending in contact with the inner box 11 and extending back and forth can counter the foaming pressure when the foam heat insulating material 12 is filled. Thereby, a deformation | transformation of the fixed rail 32 can be reduced and the fluctuation | variation of the distance between the left and right fixed rails 32 can be prevented. Therefore, the clearance S (see FIG. 4) between the fixed rail 32 and the frame 35 can be secured, and the door 31 can be prevented from being opened and closed.

  Further, it is possible to prevent the fixed rail 32 from falling off from the inner box 11 due to the foaming pressure when the foam heat insulating material 12 is filled.

  Further, by changing the positions of the engaging claws 32d and the engaging holes 11d for each refrigerator model, it is possible to easily prevent the fixing rail 32 from being attached incorrectly.

  Further, a protruding portion 11 g that protrudes from the back surface of the inner box 11 and locks the rear end of the fixed rail 32 is provided. Thereby, the fixed rail 32 can be positioned easily. Therefore, workability at the time of attaching the fixed rail 32 to the inner box 11 can be improved.

  Moreover, the front-end | tip part 11k by the side wall 3a side of the protrusion part 11g is chamfered. Thus, when the fixed rail 32 is attached to the inner box 11, the rear end of the fixed rail 32 is rotated by rotating the front portion of the fixed rail 32 that is in contact with the front end portion 11k and inclined with respect to the side wall 3a toward the side wall 3a. The part can be easily positioned.

  The length L4 in the front-rear direction of the engagement hole 11d is longer than the length L3 in the front-rear direction of the engagement hole 11c. Thereby, before the front engaging claw 32c is inserted into the engaging hole 11c, the rear engaging claw 32d is inserted into the engaging hole 11d. Therefore, since the rear part of the fixed rail 32 is positioned when moving the fixed rail 32 rearward along the side wall 3a, workability at the time of attaching the fixed rail 32 to the inner box 11 can be improved.

  Further, the engagement length L2 of the rear engagement claw 32d in the front-rear direction is longer than the engagement length L1 of the front engagement claw 32c in the front-rear direction. Thereby, before the front engaging claw 32c starts to engage with the engaging hole 11c, the rear engaging claw 32d starts to engage with the engaging hole 11d. Therefore, when the fixed rail 32 is moved rearward along the side wall 3a, the rear portion of the fixed rail 32 is reliably positioned, so that the workability when the fixed rail 32 is attached to the inner box 11 can be further improved. it can.

  Further, when the fixed rail 32 is in close contact with the upper and lower portions of the engagement holes 11c and 11d at least 5 mm around the engagement holes 11c and 11d, the foam insulation 12 is filled between the outer box 10 and the inner box 11. At this time, it is possible to prevent the stock solution of the foam heat insulating material 12 from leaking to the freezer compartment 3 side through the engagement holes 11c and 11d. Therefore, it is not necessary to provide a seal member or the like in the gap between the engagement claw 32c and the engagement hole 11c and the gap between the engagement claw 32d and the engagement hole 11d, and the manufacturing man-hour of the refrigerator 1 is reduced. Can do.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 7 shows a top sectional view of the vicinity of the left side wall 3a of the freezer compartment 3 of the refrigerator 1 of the present embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the arrangement of the engaging claws 32c and 32d and the engaging holes 11c and 11d is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  Engagement holes 11c (not shown) and 11d are provided in the front and rear portions of the side wall 32n of the fixed rail 32, respectively. Engagement claws 32c (not shown) and 32d project from the front and rear portions of the side wall 3a of the inner box 11, respectively. The engaging claws 32c and 32d extend laterally (fixed rail 32 side) and bend forward.

  In this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the engagement holes 11c and 11d are provided in the front part and the rear part of the side wall 32n, interference between the engagement claws 32c and 32d and the moving roller 36 can be prevented. If the engaging claws 32c and 32d are provided on the fixed rail 32 and the engaging holes 11c and 11d are provided on the inner box 11 as in the first embodiment, the side wall 32n can be thinned and the freezer compartment 3 This is more desirable because it improves volumetric efficiency.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 8 shows a side view of the inner box 11 of the left side wall 3a of the freezer compartment 3 of the refrigerator according to the present embodiment as viewed from the outside (foam insulation 12 side). For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the configuration of the engaging claws 32c and 32d is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  Engaging claws 32c (not shown) and 32d extend sideways (outer box 10 side) and are bent downward. Thereby, it is possible to reliably prevent the fixed rail 32 from falling off the inner box 11.

  In this embodiment, the same effect as that of the first embodiment can be obtained. Further, the engaging claws 32c and 32d extend sideways (outer box 10 side) and are bent downward. Thereby, it is possible to reliably prevent the fixed rail 32 from falling off the inner box 11.

  In the second embodiment, the engaging claws 32c and 32d of the inner box 11 extend sideward (fixed rail 32 side) and bend downward, and engage with the engaging holes 11c and 11d of the fixed rail 32, respectively. May be.

  In the first to third embodiments, a drawer-type door similar to the doors 31 and 41 is provided in the refrigerating chamber 2 in place of the rotary door 21, and a moving mechanism similar to the moving mechanisms 30 and 40 is provided. May be provided in the refrigerator compartment 2.

  Further, in the first to third embodiments, the fixed roller 33 is omitted, and a protruding portion that protrudes from the side wall 3a toward the storage cases 39 and 49 is provided in front of the fixed rail 32, and the rail portion 37 of the frame 35 protrudes. The frame 35 may be guided back and forth by sliding the upper surface of the part.

  INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator which can take in and out a storage case with the door which opens and closes a storage chamber.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigerated room 3 Freezer room 4 Vegetable room 6 Heat insulation box 10 Outer box 11 Inner box 11a, 11b Partition wall 11c, 11d Engagement hole 11g Protrusion part 11k Tip part 12 Foam insulation material 21, 31, 41 Door 22 Support Section 23 Tray 30, 40 Moving mechanism 32 Fixed rail 32a Upper rail 32b Lower rail 32c, 32d Engaging claw 33 Fixed roller 35 Frame 36 Moving roller 37 Rail section 39, 49 Storage case

Claims (5)

In a refrigerator in which a storage case held by a door that opens and closes a storage chamber is put in and out with the door,
A heat insulating box that fills a foam heat insulating material between an inner box having an opening on the front surface and an outer box that covers the outside of the inner box to form the storage chamber;
A frame that extends rearward from the left and right ends of the door and supports the storage case;
Fixed rails that extend forward and backward on both side walls of the inner box and guide the frame;
An engaging claw projecting from one front and rear of each of the fixed rail and the inner box, and an engaging hole engaging with the engaging claw at the other front and rear, respectively,
A refrigerator, wherein a front portion of the fixed rail is screwed to the inner box.   The refrigerator according to claim 1, further comprising a protruding portion that protrudes from a back surface of the inner box and engages a rear end of the fixed rail. The engagement claw is disposed on the fixed rail and the engagement hole is disposed on the inner box,
The refrigerator according to claim 1 or 2, wherein a length in the front-rear direction of the engagement hole at the rear part of the inner box is longer than a length in the front-rear direction of the engagement hole at the front part.   The refrigerator according to claim 3, wherein the engagement length in the front-rear direction of the engagement claw at the rear portion of the fixed rail is longer than the engagement length in the front-rear direction of the engagement claw at the front portion.   The refrigerator according to claim 3 or 4, wherein the fixed rail is in close contact with at least 5 mm above and below the engagement hole at least around the engagement hole.

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