JP2007064562A - Partition frame of thermally insulated casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the assembly of a partition frame used in partitioning an opening of a thermally insulated casing. <P>SOLUTION: A back plate 60 is fitted over a rear opening 46 of each vertical frame 41 assembled in such a manner as to make a cruciform in combination with horizontal frames 31. The back plate 60 has a shallow U-shaped cross section, and a plurality of cylinder parts 63 are formed on each side plate 62 by burring in such a manner as to protrude toward an outer surface. A circular hole 65 that allows the cylinder part 63 to fit generally snugly therein is cut correspondingly in each side plate 43 of each vertical frame 41. A guide groove 66 extending from an opening edge to in front of the circular hole 65 is formed on the inner surface of each side plate 43. Each cylinder part 63 is pushed in the back plate 60 along the guide groove 60 and finally goes over the tapered surface 67 of a deep end and passes through while elastically opening and deforming the side plate 43 of the vertical frame 41. Once each cylinder part has reached the circular hole 65, the side plate 43 is deformed and restored and each cylinder part 63 fits into the circular hole 65 to non-removably fix the back plate 60 in place. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a partition frame used for partitioning an opening of a heat insulating box.

For example, a four-door refrigerator has a refrigerator main body constituted by a heat insulating box having an opening at the front, and a heat insulating partition frame having a cross shape is attached to the opening at the front, so that a total of four pieces are provided vertically and horizontally. A doorway is formed. For example, a partition frame is formed by externally fitting a synthetic resin decorative frame having the same U-shaped cross section of the front opening on the rear surface side of the metal front frame having a U-shaped cross section of the rear opening, and a foam heat insulating material therein. It has a filled structure.
Here, when the partition frame is cross-shaped, for example, if the horizontal frame of the front frame is a single one, the vertical frame is divided into upper and lower parts and assembled. To enhance the vertical frame on the divided side, In addition, a single metal back plate is fixed over the upper and lower vertical frames. More specifically, the back plate is formed in a U-shaped cross section of the front opening whose side plate is low, and this back plate is fitted inside the rear opening across the upper and lower vertical frames, and the stacked side plates are It is fixed with rivets over a plurality of locations (for example, see Patent Document 1).
Japanese Patent No. 3443309

However, the means for fixing by rivets has a problem that the number of parts is increased as much as rivets are required, and the rivet fixing work itself is troublesome, leading to an increase in manufacturing cost.
The present invention has been completed based on the above circumstances, and an object thereof is to simplify the assembly of the partition frame.

As a means for achieving the above object, the invention of claim 1 is a partition frame attached to the opening of the heat insulating box, and side plates bent backward are provided on both side edges of the front plate. A front plate made of a metal plate and a back plate made of a metal plate provided with side plates that are mounted in the rear opening of the front frame and bent forward on both side edges of the rear plate, Both side plates of the back plate can be fitted into the both side plates of the front frame almost tightly, and one of the side plates facing each other has a plurality of protrusions spaced in the length direction. It is characterized in that it is formed so as to be open, and the other side plate is formed with corresponding recesses into which the projections fit.
According to a second aspect of the present invention, in the first aspect of the present invention, the protruding portion extends from the opening edge of the side plate to the vicinity of the concave portion on the side plate on the side plate on the side where the concave portion is provided. It is characterized in that a guide groove for moving and guiding is recessed.

The invention of claim 3 is a partition frame attached to the opening of the heat insulation box, and is a front plate made of a metal plate provided with side plates bent backward on both side edges of the front plate, and the front surface. A back plate made of a metal plate provided in a rear opening of the frame and provided with side plates bent forward on both side edges of the rear plate, and the back plate facing the side plate of the front frame A plurality of seats formed in a dish shape toward the other side plate side are formed on either side plate of the plates at intervals in the length direction, and the bottom surface of each seat and the other side plate are formed. The side plate can be fitted almost tightly, and a recess is formed on the bottom surface of each seat, and the other side plate is formed with a protrusion that fits in each recess. It has the characteristics.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the projecting portion is a cylindrical portion formed by burring, and the concave portion is a circle in which the cylindrical portion is fitted almost tightly. It is characterized by being a hole.

<Invention of Claim 1>
When assembling the back plate to the front frame, if the side plate of the back plate is inserted into the rear opening of the front frame and pushed in while elastically opening the opposing side plates, the protrusion slides on the other side plate and pushes in. When the projection reaches the position of the corresponding recess, the side plates are elastically closed and each projection fits into the recess, and the back plate is fitted into the rear opening of the front frame in a state where it cannot be removed. .
Since no special fixing parts such as rivets are used, the number of parts can be reduced, and the assembling work can be done simply by pushing the back plate into the rear opening of the front frame while elastically opening the side plates. Therefore, the manufacturing cost can be reduced.

<Invention of Claim 2>
When the back plate is fitted into the rear opening of the front frame, the protrusion is pushed in while moving along the guide groove. Rides over the back end of the guide groove, and when the protrusion reaches the recess, the side plates are elastically closed, the protrusions fit into the recess, and the back plate is fitted so that it cannot be removed.
Due to the guide groove, the side plates can be opened elastically only in a small area in front of the recess when fitting the back plate, so the fitting resistance can be reduced and the protrusion can be accurately handled. Therefore, the back plate can be assembled more efficiently.

<Invention of Claim 3>
When the back plate is fitted into the rear opening of the front frame, the projection hits the outer surface of the bottom of the seat, and when pushed further, the projections run up to the bottom of the seat while both side plates open elastically. When reaching the position of the concave portion, both side plates are elastically closed and each protrusion is fitted into the concave portion, and the back plate is fitted into the rear opening of the front frame in a state where it cannot be removed.
Since no special fixing parts such as rivets are used, the number of parts can be reduced, and the assembly work can be done simply by pushing the back plate into the rear opening of the front frame while elastically opening the side plates. Can contribute to the reduction of manufacturing costs. In this invention, since the bottom surface of the seat provided on one side plate is in contact with the other side plate, the contact area between the side plates of the front frame and the back plate is small, and a gap is formed between the opposing side plates. Since the heat insulating material can enter the gap, heat conduction from the back plate to the front frame can be greatly suppressed.
<Invention of Claim 4>
A strong concave-convex fitting function can be realized by an extremely simple structure in which the protrusion is a cylindrical portion by burring and the concave portion is a circular hole.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
First, the overall structure of the refrigerator according to the present embodiment will be described with reference to FIG. Reference numeral 10 denotes a refrigerator main body, which is composed of a heat insulating box with a front opening in which a heat insulating material made of foamed resin such as urethane foam is foam-filled between an outer box and an inner box made of stainless steel plate. . The main body 10 is supported by legs 11 provided at the four corners of the bottom surface, and the inside is a storage chamber 12. As will be described in detail later, a partition frame 30 assembled in a cruciform shape is attached to the opening 14 on the front surface of the main body 10, and thereby, four entrances 15 are formed in the upper, lower, left, and right directions. The heat insulating door 16 is mounted in a double door type.

  A machine room 20 is provided on the upper surface of the main body 10, and a refrigeration unit 21 including a compressor 22, a condenser 23, and the like is installed therein, and a cooler (not shown) disposed on the ceiling of the storage room 12. And a refrigerant pipe to form a known refrigeration cycle. Then, the inside of the storage chamber 12 is maintained at a substantially constant cooling temperature by the control operation of the refrigeration unit 21 described above, and on the shelf network 25 arranged in the storage chamber 12 from the entrance 15 while opening and closing the heat insulating door 16. Storage is to be taken in and out.

Next, the partition frame 30 and its mounting structure will be described. As shown in FIG. 2, the partition frame 30 includes a single horizontal front frame 31 (hereinafter simply referred to as a horizontal frame 31) and a vertical front frame 41 (hereinafter simply referred to as a vertical frame 41) divided into two upper and lower parts. And.
The horizontal frame 31 is made of a stainless steel plate and has a U-shaped cross section provided with side plates 33 bent at substantially right angles toward the rear at both upper and lower side edges of the front plate 32. Has a length comparable to the dimensions. The upper and lower side plates 33 are formed with a large number of long holes 34 on the base end side, and the long holes 34 prevent cold heat from being transferred from the inner side of the horizontal frame 31 to the outer side of the side frame 31 and will be described later. Thus, when the heat insulating material is foam-filled, the function of increasing the adhesion is achieved. Further, a notch window 35 (see FIG. 3) is formed at the center in the length direction of the upper and lower side plates 33 of the horizontal frame 31, and a shallow groove shape is formed inside the position where the notch window 35 is formed. A formed metal reinforcing plate 36 is fitted.

The vertical frame 41 is also made of a stainless steel plate, and has a U-shaped cross section provided with side plates 43 bent at substantially right angles toward the rear at the left and right side edges of the front plate 42. Both vertical frames 41 are attached to the upper and lower surfaces of the central portion in the lengthwise direction of the horizontal frame 31 so as to be assembled into a cross shape as described above. The dimension between them has such a length dimension that it is substantially equal to the height dimension of the opening 14 of the main body 10. In the left and right side plates 43 of each vertical frame 41, a large number of long holes 44 are similarly formed on the base end side. Further, as shown in FIG. 3, an abutting plate 45 is formed by bending at a right angle at an end portion of each vertical frame 41 attached to the horizontal frame 31, and the abutting plate 45 is formed by the horizontal frame. It is fixed by, for example, being riveted to the reinforcing plate 36 through the side edge of the 31 cutout window 35.
A single back plate 60 made of a metal plate is fitted into the rear openings 46 of both vertical frames 41 so as to be fixed. The back plate 60 and its fixing structure will be described later.

  A decorative frame is fitted on the rear side of the horizontal frame 31 and the vertical frame 41. The decorative frame is composed of one vertical decorative frame 50 and two horizontal decorative frames 51, each of which is formed in a U-shaped cross section opened forward by a synthetic resin material. The vertical decorative frame 50 has a total length substantially equal to the upper end to the lower end of the assembled vertical frames 41. An escape recess 53 is formed in the center position of the both side plates of the vertical decorative frame 50 so that the horizontal frame 31 is fitted and escaped. One horizontal decorative frame 51 has a length substantially equal to the length of the portion of the horizontal frame 31 assembled with the vertical frame 41 that protrudes from the vertical frame 41. Both decorative frames 50 and 51 can be elastically fitted from the rear side of the vertical frame 41 or the horizontal frame 31.

Two left and right shelf columns 55 are attached to the back surface of the vertical decorative frame 50, and are fixed by being screwed to the above-described back plate 60 through the vertical decorative frame 50. It has become.
A bracket 57 is attached to each protruding end of the horizontal frame 31 and the vertical frame 41 to fix the protruding end to a corresponding position on the peripheral surface of the opening 14 of the main body 10 (see FIG. 3).

Now, the fixing structure between the vertical frames 41 and the back plate 60 is as follows.
Since the back plate 60 is made of a metal plate and has a function as a reinforcing plate, the back plate 60 is slightly thicker than the vertical frame 41 or at least about the same thickness. Thus, it is formed in the cross-sectional U shape which provided the side plate 62 bent substantially right-angled toward the front at the both-sides edge of the rear surface board 61. As shown in FIG. However, the side plate 62 of the back plate 60 is about 1/3 the height of the side plate 43 of the vertical frame 41 and has a shallow U-shaped cross section, and both side plates 62 of the back plate 60 are both sides of the vertical frame 41. The plate 43 can be fitted almost tightly. Further, the entire length of the back plate 60 is shorter than the length connecting both the vertical frames 41 by a predetermined dimension. The back plate 60 extends over the rear openings 46 of the vertical frames 41 attached to the horizontal frame 31. Specifically, the upper and lower ends of both vertical frames 41 are left slightly, and the rear plate 61 is a side plate of the vertical frame 41. It is fitted and fixed so as to be substantially flush with the opening edge of 43.

  The fixing structure will be described. As shown in FIG. 3 and FIG. 4, burring processing is performed on both side plates 62 of the back plate 60 at every three positions shown in the figure in the upper and lower regions sandwiching the central portion in the height direction. Thus, a cylindrical portion 63 (corresponding to the protrusion of the present invention) is formed. As shown in FIG. 4, the cylindrical portion 63 has a height substantially equal to the thickness of the side plate 62 and is formed to protrude to the outer surface side.

On the other hand, on both side plates 43 of each vertical frame 41, the same cylinder is provided for each position corresponding to each cylindrical portion 63 when the back plate 60 is properly fitted to the rear opening 46 of the vertical frame 41 as described above. A circular hole 65 (corresponding to the concave portion of the present invention) into which the portion 63 fits closely is opened.
Further, a guide groove 66 that fits and guides the above-described cylindrical portion 63 is formed on the inner surface of the side plate 43 of the vertical frame 41 by knocking it out to the outer surface side. Specifically, the guide groove 66 has a depth substantially equal to the height of the cylindrical portion 63 and is formed along the fitting direction of the cylindrical portion 63 from the opening edge of the side plate 43 to a position immediately before the circular hole 65. Has been. The back end of the guide groove 66 is a tapered surface 67.

Then, an example of the procedure of manufacture from the partition frame 30 to an assembly is demonstrated.
First, the horizontal frame 31 and the vertical frame 41 are assembled in a cross shape. For this purpose, as shown in FIG. 3, the horizontal frame 31 is placed on the work table with the opening facing upward, and a reinforcing plate 36 is fitted in the center of the horizontal frame 31. Next, the abutting plates 45 of the upper and lower vertical frames 41 are brought into contact with the positions where the cutout windows 35 are formed in the side plates 33 of the horizontal frame 31, and the abutting plates 45 penetrate the side edges of the notched windows 35 and the reinforcing plates 36. Riveted to and fixed. As a result, one horizontal frame 31 and two vertical frames 41 are assembled in a cross shape via the reinforcing plate 36.
Next, the cord heater 70 for preventing condensation is wired and pasted from the vertical frame 41 assembled in a cross shape to the back side of the horizontal frame 31. Both lead wires 70A of the cord heater 70 are drawn from the upper end of the upper vertical frame 41 (the left front side in FIG. 3). Subsequently, brackets 57 are attached to the ends of the upper and lower vertical frames 41 and the left and right ends of the horizontal frame 31.

  Subsequently, the back plate 60 is fitted into the rear opening 46 across the vertical frames 41. For this purpose, as shown in FIG. 4, each cylindrical portion 63 of the side plate 62 of the back plate 60 is aligned with the corresponding guide groove 66 provided in the side plate 43 of the vertical frame 41, as shown by the arrow in FIG. The both side plates 62 of the back plate 60 are put inside the both side plates 43 of the vertical frame 41. When the back plate 60 is pushed in while the cylindrical portion 63 moves along the guide groove 66 and hits the back end of the guide groove 66, the side plate 43 on the vertical frame 41 side mainly opens elastically. While being deformed, the cylindrical portion 63 rides on and passes through the tapered surface 67 at the back end of the guide groove 66, and when the cylindrical portion 63 reaches the circular hole 65, the side plate 43 of the vertical frame 41 is restored and deformed. 63 fits into the circular hole 65, and as shown in FIGS. 5 and 6, the back plate 60 is fixed so that it cannot be removed. As described above, in the back plate 60, the rear plate 61 is flush with the opening edge of the side plate 43 of the vertical frame 41, and the predetermined dimensions of the end portions of both the vertical frames 41 are separated from the end edges of the back plate 60. Open.

From this state, as shown in FIG. 7, plugs 72 made of polystyrene foam are fitted to the upper and lower ends of the upper and lower vertical frames 41 and the left and right ends of the horizontal frame 31. Note that a plug body 72 fitted in the lower end portion of the lower vertical frame 41 is formed with a through-hole 73 for an injection hose to be described later.
Finally, one vertical decorative frame 50 is fitted so as to straddle both vertical frames 41, and a horizontal decorative frame 51 is fitted to each portion of the horizontal frame 31 protruding from the vertical frame 41, as shown in FIG. Thus, the cross-shaped outer shell 75 is assembled.

In the assembled state, the outer shell 75 is filled with a heat insulating material. For this purpose, a sealing tape is attached to an opening such as a mounting hole of a corner 76, which will be described later, and then an injection hose that is installed on a foaming jig (not shown) and is pulled out from the injection device is a plug on the lower end side of the vertical frame 41. 72 is inserted through the insertion hole 73 and the tip is inserted to the cross-shaped intersection. And the undiluted | stock solution of a heat insulating material is inject | poured and foam-filled.
When the foam filling operation of the heat insulating material is completed, corners 76 (see FIG. 9) are attached to cover the joint portions of the decorative frames 50 and 51 at the four corner portions of the partition frame 30. At the same time, two shelf columns 55 are attached to the back side of the vertical decorative frame 50. Thus, the assembly of the partition frame 30 is completed.

As shown in FIG. 9, the partition frame 30 assembled in a cross shape as described above is fitted and fixed to the opening 14 of the main body 10 from the front side. A shelf column 55 is attached in advance in the storage chamber 12. For example, there are six attachment points, one for each of the left and right regions of the back wall of the storage chamber 12 and one for the front side of the left and right side walls.
The lead wire 70 </ b> A of the cord heater 70 drawn from the upper end of the partition frame 30 passes through the insertion hole 77 provided in the upper surface of the opening 14 of the main body 10 and is drawn to the upper surface side of the main body 10. Subsequently, the partition frame 30 is inserted into the opening 14 from the front surface, and brackets 57 provided at each end of the partition frame 30 are applied to the upper and lower or left and right peripheral surfaces of the opening 14 and fixed with screws. Is done.

After that, corners 76 are formed at eight corners where the four peripheral surfaces of the opening 14 of the main body 10 and each end of the partition frame 30 intersect and four corners of the opening 14 of the main body 10. It is attached. As a result, a total of four entrances 15 in the vertical and horizontal directions are formed in the opening 14 of the main body 10.
Further, as shown in FIG. 9, a hinge 78 is screwed to the bracket 57 and a screw hole at the same edge at a substantially central height position of the left and right mouth edges in the opening portion 14 of the main body 10. Fixed. In addition, a hinge 78 is provided at a necessary portion, and the heat insulating door 16 is attached to each doorway 15 in a double-spreading manner.

As described above, in the present embodiment, when the back plate 60 is fitted and fixed over the rear openings 46 of both the vertical frames 41, the cylindrical portion 63 formed on the side plate 62 of the back plate 60 is replaced with the side plate 43 of the opposed vertical frame 41. Since a structure that fits into the circular hole 65 is adopted, a special fixing part such as a rivet that has been conventionally used can be made unnecessary, and the number of parts can be reduced.
As for the assembling work of the back plate 60, since the guide groove 66 is provided in particular, the side plate 43 of the vertical frame 41 is elastically opened slightly before the circular hole 65 when the back plate 60 is fitted. Therefore, the fitting resistance can be reduced, and the cylindrical portion 63 can be accurately guided to the corresponding circular hole 65, so that the assembly can be efficiently performed. Therefore, it can contribute to reduction of manufacturing cost.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, contrary to the first embodiment, a cylindrical portion 63 (corresponding to a protrusion of the present invention) is formed on the side plate 43 side of the vertical frame 41A so as to protrude to the inner surface side by burring. .
On the other hand, a circular hole 65 (corresponding to a concave portion of the present invention) in which the cylindrical portion 63 is fitted almost tightly is opened at a position corresponding to both side plates 62 of the back plate 60A. Further, a guide groove 66 that fits and guides the cylindrical portion 63 on the outer surface of the side plate 62 of the back plate 60 </ b> A strikes the inner surface from the opening edge of the side plate 62 to a position just before the circular hole 65. Is formed. Similarly, the back end of the guide groove 66 is a tapered surface 67.

  In assembling the back plate 60A to the rear opening 46 across the vertical frames 41A, as shown in FIG. 10, the guide grooves 66 of the side plate 62 of the back plate 60A are formed in the corresponding cylindrical portions 63 of the side plate 43 of the vertical frame 41A. In addition, as shown by the arrow in the figure, both side plates 62 of the back plate 60A are placed inside the side plates 43 of the vertical frame 41A. When the back plate 60A is pushed into the guide groove 66 while inserting the cylindrical portion 63 into the guide groove 66 and hits the inner end of the guide groove 66, the back plate 60A mainly elastically opens and deforms the side plate 43 on the vertical frame 41A side. However, when the cylindrical portion 63 rides on and passes through the tapered surface 67 at the back end of the guide groove 66 and the cylindrical portion 63 reaches the circular hole 65, the side plate 43 of the vertical frame 41A is restored and deformed to each cylindrical portion 63. Is fitted into the circular hole 65, and the back plate 60A is fixed so as not to be removed, as shown in FIGS.

As in the first embodiment, when fixing the back plate 60A to the vertical frame 41A, special fixing parts such as rivets can be eliminated, and the number of parts can be reduced. Assembly can also be performed accurately and efficiently using the guide groove 66, thereby contributing to a reduction in manufacturing cost.
In addition, in the second embodiment, the cylindrical portion 63 is formed so as to protrude toward the inner surface side of the side plate 43 of the vertical frame 41A. Therefore, after the back plate 60A is assembled to the vertical frame 41A, the side plate of the vertical frame 41A is assembled. There is nothing protruding on the outer surface side of 43, and the operation of fitting the vertical decorative frame 50 from the rear surface side of the vertical frame 41A can be performed smoothly.

<Embodiment 3>
13 to 15 show Embodiment 3 of the present invention.
In this embodiment, the rear plate 61 of the back plate 60B is formed with a narrow width, so that both side plates 62 of the back plate 60B have a predetermined gap C (see FIG. 14) inside the side plates 43 of the vertical frame 41B. To be fitted. A cylindrical portion 63 (corresponding to the protrusion of the present invention) is formed at a predetermined position of the side plate 62 of the back plate 60B so as to protrude to the outer surface side by burring.
On the other hand, on both side plates 43 of each vertical frame 41B, a seat 80 is provided on the inner surface side for each position corresponding to each cylindrical portion 63 when the back plate 60B is properly fitted to the rear opening 46 of the vertical frame 41B. A dent is formed. The seat 80 is formed in a circular dish shape whose diameter is gradually reduced toward the bottom side, and a circular hole 65 (the present invention) in which the cylindrical portion 63 fits almost tightly on the bottom surface 81 of the seat 80. Corresponding to the recesses of FIG.

The assembling operation of the third embodiment is as follows.
As shown by the arrow in FIG. 13, when the back plate 60B is fitted into the rear opening 46 of the vertical frame 41B, the cylindrical portion 63 hits the outer surface on the bottom side of the seat 80 provided on the side plate 43 of the vertical frame 41B. When further pushed, the side plate 43 of the vertical frame 41B mainly opens and deforms elastically, and the cylindrical portion 63 rides on the bottom surface 81 of the seat 80 and reaches the position of the circular hole 65 opened there. The side plate 43 of 41B is restored and deformed, and each cylindrical portion 63 is fitted into the circular hole 65, and the back plate 60B is fixed so as not to be removed, as shown in FIGS.

  Also in the third embodiment, when the back plate 60B is fitted and fixed over the rear openings 46 of both the vertical frames 41B, special fixing parts such as rivets can be made unnecessary, and the number of parts can be reduced. As for the assembly of the back plate 60B, when the back plate 60B is fitted, the side plate 43 of the vertical frame 41B is elastically opened only in a small region after the cylindrical portion 63 hits the seat 80, that is, It can be assembled smoothly due to its low fitting resistance. Therefore, it can contribute to the reduction of manufacturing cost.

  In particular, in this embodiment, since the bottom surface 81 of the seat 80 provided on the side plate 43 of the vertical frame 41B is in contact with the side plate 62 of the back plate 60B, between the side plates 43 and 62 of the vertical frame 41B and the back plate 60B. The contact area becomes smaller. In addition, since a gap C is formed between the opposing side plates 43 and 62, when the insulating material is foamed and filled after the decorative frames 50 and 51 are fitted, the heat insulating material also enters the gap C, Heat conduction from the plate 60B to the vertical frame 41B can be significantly suppressed. In other words, the surface of the partition frame 30 is suppressed from being cooled by the influence of the cool air inside the cabinet, and it is difficult for condensation to occur. As a result, the capacity of the code heater 70 for preventing condensation can be reduced. It can contribute to energy saving.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In Embodiment 1 or 2, when it is intended to fit the back plate smoothly into the rear surface opening of the vertical frame, for example, a part of a plurality of cylindrical portions, When the surface corresponding to the end edge is formed into a tapered surface, the back plate can be pushed in while opening the side plates when the tapered surface hits the end edge of the mating side plate. That is, even if the guide groove is not provided, the back plate can be smoothly fitted, and such a configuration is also included in the technical scope of the present invention.
(2) In relation to the third embodiment, a seat may be formed on the side plate side of the back plate by increasing the height of the side plate of the back plate.

(3) In the above-described embodiment, the cylindrical portion and the circular hole are exemplified as the protrusion and the recess that are fitted to each other. However, the protrusion is provided with a claw portion that is formed by cutting and raising the protrusion. May adopt other means such as a square hole-shaped locking hole in which the claw portion is fitted and locked. Further, the concave portion is not a completely open hole but may be a concave formed with a certain depth.
(4) Contrary to the above-described embodiment, the present invention can be similarly applied to the case where the side of the horizontal frame is divided into right and left and the back plate is mounted over the rear openings of both horizontal frames.
(5) The partition frame may be T-shaped, or may be of a type in which only a horizontal frame or a vertical frame is provided. The main point is that the partition frame is generally installed on the back plate at the rear opening of the front frame. The invention is applicable.

(6) As a means for attaching the partition frame to the opening of the main body, an attachment member called a catch is provided in advance on the opening side, and the end of the partition frame is fitted into the corresponding attachment member for attachment. May be.
(7) In addition to the refrigerator, the present invention is widely applied to a partition in which the front opening of the heat insulating box constituting the main body is partitioned by a partition frame in general storage such as a refrigerator-freezer, a warm storage, a constant temperature and high humidity storage. Is possible.

External appearance perspective view of the refrigerator which concerns on Embodiment 1 of this invention Exploded perspective view of partition frame Perspective view before assembling the horizontal frame and vertical frame and then attaching the back plate Cross-sectional view before assembly of vertical frame and back plate Cross section after assembly Same part rear view Perspective view before attaching the decorative frame Perspective view of outer shell The perspective view which shows the attachment structure of a partition frame Cross-sectional view before assembly of vertical frame and back plate according to Embodiment 2 Cross section after assembly Cross section seen from the back Cross section before assembling the vertical frame and back plate according to Embodiment 3 Cross section after assembly Cross section seen from the back

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Main body (insulation box) 15 ... Opening part 30 ... Partition frame 31 ... Horizontal frame 41, 41A, 41B ... Vertical frame (front frame) 42 ... Front plate 43 ... Side plate 46 ... Rear opening 60, 60A, 60B ... Back Plate 61: Rear plate 62 ... Side plate 63 ... Cylindrical portion (projection) 65 ... Circular hole (recess) 66 ... Guide groove 67 ... Tapered surface 80 ... Seat 81 ... Bottom surface

Claims (4)

A partition frame that is attached to the opening of the heat insulation box, and is attached to the front frame made of a metal plate with side plates bent backward on both side edges of the front plate, and the rear frame of the front frame. And a back plate made of a metal plate provided with side plates bent forward on both side edges of the rear plate,
Both side plates of the back plate can be fitted into the both side plates of the front frame almost tightly, and one of the side plates facing each other has a plurality of protrusions spaced in the length direction. A partition frame for a heat insulation box, wherein the other side plate is formed with a recess corresponding to the projection. A guide groove that moves and guides the protrusion from the opening edge of the side plate to the vicinity of the recess is formed on the surface of the side plate on the side where the recess is provided facing the other side plate. The partition frame of the heat insulation box of Claim 1. A partition frame that is attached to the opening of the heat insulation box, and is attached to the front frame made of a metal plate with side plates bent backward on both side edges of the front plate, and the rear frame of the front frame. And a back plate made of a metal plate provided with side plates bent forward on both side edges of the rear plate,
The side plate of the front frame and the side plate of the back plate opposite to the side plate are provided with a plurality of seats formed in a dish shape toward the other side plate, spaced apart in the length direction. The bottom surface of each seat and the other side plate can be fitted almost tightly, and a recess is formed in the bottom surface of each seat, and the other side plate has a recess in each recess. The partition frame of the heat insulation box characterized by the protrusion part which fits being formed correspondingly. The heat insulating box according to any one of claims 1 to 3, wherein the protrusion is a cylindrical portion formed by burring, and the concave portion is a circular hole into which the cylindrical portion is fitted almost tightly. Body divider.

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