JP2005156133A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent, by simple constitution, a protruded part of a food shelf from being rubbed with an inside of a rail groove of an inner box, and from being damaged thereby. <P>SOLUTION: This refrigerator filled with a heat insulation cellular material between an outer box and the inner box to form a heat-insulated box body is provided with the rail groove formed integrally in left and right walls of the inner box, the resin food shelf attached to the rail groove of the left and right walls to be drawn out and in freely, the protruded parts formed integrally with the food shelf in its left and right sides, a recessed part formed integrally inside the rail groove of the inner box and engaged with the protruded part, and a slit part provided in the food shelf and provided the vicinity of the protruded part to enhance elastic force of the protruded part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator including a food shelf that is detachably mounted in a freezer compartment or a refrigerator compartment.

  The food shelves 2a, 2b, and 2c of the two-door type small refrigerator 1 as shown in FIG. 1 are tray-type resins that are easy to clean from the net shelves up to that point and are not easily collapsed when food is placed and are easy to organize. Food shelves are being used.

  As a mounting structure to the refrigerator 1, ribs in the front-rear direction are integrally formed on the left and right side walls of the inner box 3 forming the freezer compartment 1a and the refrigerator compartment 1b.

  In the case of the resin food shelves 2a to 2c, when the resin food shelves 2a to 2c are properly installed so that the cold air circulates in the freezer compartment 1a and the refrigerator compartment 1b as shown by the arrows in FIG. A cold air passage with a predetermined interval is formed between the inner walls of the freezer compartment 1a and the refrigerator compartment 1b and the inner walls of the freezer compartment door 4a and the refrigerator compartment door 4b.

  This conventional example will be described with reference to FIGS.

  FIG. 2 is a front view showing the internal structure of the refrigerator. 3 and 4 are perspective views showing the resin food shelf. 5 and 6 are perspective views showing the main configuration of the inner box. In each figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

  As shown in FIG. 2 (each door is omitted), the refrigerator 1 is a so-called two-door type small refrigerator having a freezer room 1a on the upper side and a refrigerator room 1b on the lower side. In the freezer room 1a, In order to divide the freezer compartment 1a into two upper and lower stages, one food shelf 2a is mounted, and in the refrigerated compartment 1b, two food shelves 2b to divide the refrigerated compartment 1b into upper, middle and lower three stages, 2c is mounted.

  Since the inside of the freezer compartment 1a is cooled below the freezing point, the thickness between the outer box 5 and the inner box 3 is formed thicker than the refrigerator compartment 1b in order to enhance the heat insulation effect. Therefore, in order to increase the food storage volume of the freezer compartment 1a as much as possible, the groove groove 6a for taking in and out the food shelf 2a is formed by forming concave grooves extending in the front-rear direction on the left and right side walls of the inner box 3. Has been. The rail groove 6a is formed in a plurality of stages so that the vertical position of the food shelf 2a can be adjusted.

  On the other hand, a plurality of ribs 7 extending in the front-rear direction are formed on the left and right side walls of the inner box 3 on the freezer compartment 1b side, and the food shelves 2b and 2c are inserted and removed between these ribs 7. The rail groove 6b is formed. The rail groove 6b is also formed in a plurality of stages so that the vertical positions of the food shelves 2b and 2c can be adjusted in the same manner as described above.

  Each of the food shelves 2a to 2c is formed into a rectangular tray shape as shown in FIG. 3 with a transparent resin. The size of the food shelves 2a to 2c is such that the width in the left-right direction is slightly shorter (about 1 to 2 mm) than the width between the side walls of the rail grooves 6a, 6a, 6b, 6b. When it is mounted in the freezer compartment 1a or the refrigerator compartment 1b, it is formed to the extent that a cold air passage with a predetermined interval can be formed before and after. The tray-type resin food shelves 2a to 2c are advantageous in that they are easy to clean as described above, are not easily overturned when food is placed, and are easy to organize.

  The left and right side walls 20 and 20 of the resin food shelves 2a to 2c are respectively formed with two convex portions 21 and 21 that are spaced apart from each other by a predetermined distance. These convex portions 21 have a size that protrudes from the surface of the side wall 20 by about 5 mm to 10 mm, and slide smoothly on the side wall surfaces of the rail grooves 6a and 6b, or are formed on the side walls of the rail grooves 6a and 6b, which will be described later. As shown in an enlarged view in FIG. 4, it is formed in a rounded semi-cylindrical shape so that it can be smoothly inserted into and removed from the recess.

  On the other hand, each rail groove 6a, 6b formed in the freezer compartment 1a or the refrigerator compartment 1b has a side wall 20 of the resin food shelves 2a to 2c on the deep side wall 60 as shown in FIGS. Corresponding to the convex portions 21 and 21 formed in the above, concave portions 61 and 61 having a size to which the convex portion 21 is fitted are formed.

  The rail grooves 6a and 6b are not formed up to the inner wall of the inner box 3, and when the food shelves 2a to 2c are mounted, the rail grooves 6a and 6b are spaced apart from the inner walls of the freezer compartment 1a and the refrigerator compartment 1b. A cold air passage is formed up to a position where the cold air passage is secured. At this time, a cold air passage having a predetermined interval is also secured between the freezer compartment door 4a and the refrigerator compartment door 4b shown in FIG.

Each resin food shelf 2a-2c is mounted as shown in FIG. This mounting operation is performed by inserting the food shelves 2a to 2c into appropriate rail grooves 6a and 6b of the freezer compartment 1a and the refrigerator compartment 1b.
Japanese Patent Laid-Open No. 11-132649

However, at this time, the convex part 21 formed to protrude from the side wall 20 surface of the food shelves 2a to 2c by about 5 mm hits the side wall 60 of the inserted rail grooves 6a and 6b. There was a problem that the inner box groove was scratched by rubbing.

The inner box of the refrigerator is ABS resin (or high-impact polystyrene resin), and the food shelf is also ABS resin (or polypropylene resin or polystyrene resin).

  The heat insulating box of the refrigerator is formed by combining an inner box made of resin and having a thin wall and an outer box made of a steel plate, and filling a foamed resin therebetween. For this reason, the dimensions of the inner box vary depending on the foaming condition of the foamed resin. Further, as described above, the inner box is thin, and when it is strongly pressed by the convex portion of the molded food shelf, it is deformed or damaged and the commercial value is lowered.

  For this reason, it is only necessary to reduce the size fluctuation of the inner box due to foam filling of the refrigerator, but this is very difficult.

  Therefore, the present invention has been made to solve such problems, and has an object to prevent the convex portion of the food shelf from damaging the groove with a simple configuration.

  The present invention is characterized in that a gap is formed in the vicinity of the convex portion to increase the elastic deformation force of the convex portion.

  The present invention relates to a refrigerator in which a heat insulating foam is filled between an outer box and an inner box to form a heat insulating box, and a rail groove integrally formed on the left and right side walls of the inner box, and a rail groove on the left and right side walls. A resin food shelf that is freely mounted, a positioning and fixing convex portion integrally formed on the left and right sides of the food shelf, and a concave portion that is integrally formed in the rail groove of the inner box and fits with the convex portion. And a slit portion provided in the vicinity of the convex portion in order to increase the elastic force of the convex portion provided on the food shelf.

  Furthermore, the present invention is characterized in that the slit portion is U-shaped. In addition, the present invention is characterized in that the slit portion is L-shaped.

  Further, the present invention is characterized in that the convex portion is located in a U-shaped slit portion.

  According to the present invention, the convex portion is elastically deformed in the groove and does not damage the groove.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 7 is a perspective view showing a resin food shelf of the refrigerator according to the embodiment of the present invention. FIG. 8 is a perspective view showing the main configuration of the inner box. FIG. 9 is an enlarged view of a main part of the inner box. In each figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts.

  As shown in FIGS. 7, 8, and 9, in this embodiment, an L-shaped slit portion 25 is provided around the convex portion 21 of the side wall 20 of the food shelf. This slit portion 25 increases the elastic force of the side wall 20 portion where the convex portion 21 is formed.

  For this reason, when the food shelf is inserted, the convex portion 21 formed to protrude from the side wall 20 surface of the food shelves 2a to 2c by about 5 mm hits the side wall 60 of the inserted rail grooves 6a and 6b. The food shelf can be inserted smoothly by retracting inward due to elastic deformation.

  When the food shelves 2a to 2c are inserted to the innermost part of the rail grooves 6a and 6b, the convex portions 21 and 21 formed on the front and rear sides of the both side walls 20 of the food shelves 2a to 2c are the corresponding concave portions 61 and the rail grooves 6a and 6b. The elastic deformation of the convex portion 21 returns to its original position, and is fixedly positioned here.

  This state cannot be removed unless a force is applied to pull the food shelves 2a to 2c by hand.

  As shown in FIGS. 7, 8, and 9, in this embodiment, an L-shaped slit portion 25 is provided around the convex portion 21 of the side wall 20 of the food shelf. This slit portion 25 increases the elastic force of the side wall 20 portion where the convex portion 21 is formed.

  For this reason, when the food shelf is inserted, the convex portion 21 formed to protrude from the side wall 20 surface of the food shelves 2a to 2c by about 5 mm hits the side wall 60 of the inserted rail grooves 6a and 6b. The food shelf can be inserted smoothly by retracting inward due to elastic deformation.

  FIG. 10 shows a second embodiment. In the second embodiment, a U-shaped slit portion 25 is provided around the convex portion 21 of the side wall 20 of the food shelf. This slit portion 25 increases the elastic force of the side wall 20 portion where the convex portion 21 is formed.

It is a sectional side view of the conventional refrigerator. It is a front view which shows the internal structure of the refrigerator of the conventional refrigerator. It is a perspective view which shows the conventional resin-made shelf. It is a principal part enlarged view of the conventional resin-made shelf. It is a perspective view which shows the conventional inner box. It is a principal part enlarged view of the conventional inner box. It is a perspective view which shows the resin-made shelves in embodiment of this invention. It is a principal part enlarged view of the resin-made shelves in embodiment of this invention. It is a principal part enlarged view of the inner box in embodiment of this invention. It is a principal part enlarged view of the resin-made shelves in Example 2 of this invention.

Explanation of symbols

1 refrigerator,
2a-2c food shelf,
20 side walls of food shelves,
21 convex part,
25 slit part,
3 inner box,
5 outer box,
6a, 6b rail groove,
60 side wall of rail groove,
61 recess,
7 Ribs.

Claims (4)

In the refrigerator that forms a heat insulation box body by filling a heat insulation foam material between the outer box and the inner box,
Rail grooves integrally formed on the left and right side walls of the inner box, resin food shelves that are freely mounted in and out of the rail grooves on the left and right side walls, and positioning fixing protrusions that are integrally molded on the left and right sides of the food shelves And a recess formed integrally with the protrusion in the rail groove of the inner box, and provided in the vicinity of the protrusion to increase the elastic force of the protrusion provided in the food shelf. A refrigerator comprising a slit portion.   The refrigerator according to claim 1, wherein the slit portion is U-shaped.   The refrigerator according to claim 1, wherein the slit portion is L-shaped.   The refrigerator according to claim 2, wherein the convex portion is located in the slit portion.

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