JPS59150283A - Box body of refrigerator, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a box for a refrigerator or the like whose cabinet is constructed from bent traps of painted steel plates.

(b) Prior art Figure 1 is a front perspective view of a conventional outer box (1) of a refrigerator, etc., showing the left side (2), right side (3), top surface (4), and front opening (5). The 7 langes (6) on the edge are formed by bending a single band-shaped steel plate, and the bottom (force) and back plate (
8) Furthermore, the 'F green plate (9) of the opening (5) is welded together, and the surface is finished by painting these assembled parts. In this case, the flange (6) is attached to the upper surface (4
) and the left and right sides (2) and (3) are bent to attach the front flange (
6A), a front flange (6C) formed by a back flange (6B) that is continuously folded back to the front flange (6A), and is in close contact with the back surface of this front flange (6A), and a back flange (6B). It is continuous with the back 7 langes (6B), forming a groove (II), and the rear flange (6D), and the front 7 langes (6C) of the flange (6) on the upper side of the opening (5).
The flanges (6) on the left and right sides of the opening (5) are overlapped with the back surface of the front flange (6C). There is.

However, when bending the steel strip coated with the outer box (1) to form the top surface (4), left and right side surfaces (2), (3), and 7 lunges (6), the bending angle or bending radius If the radius is too small, the paint film will peel off or cracks will occur, so the bending part a of the front flange (6C) and the bending of the clasp should have a large radius.The gap at the lever part will become too large, which is unfavorable in terms of appearance. Also, because the paint film peels off, welding such as spot welding is not possible, so the overlapping part must be fixed by caulking, gluing, or riveting, which requires drilling holes for rivets in the overlapping part, and the gluing work is time-consuming. The number of parts increases, and caulking also has the disadvantage of causing scratches on the surface.

(C) Purpose of the Invention The present invention is a method of constructing a box body for a refrigerator, etc., which is made up of a cabinet with seven lunges formed on the left and right sides, the top surface, and the front end, by bending a strip-shaped steel plate that has been painted in advance. A structure that achieves reinforcement of the front end corner portion of the cabinet without riveting or caulking, and that does not interfere with the installation of the high temperature refrigerant pipe of the refrigeration cycle in the groove formed in the flange. It provides:

B) Structure of the Invention A cabinet is constructed by bending a band-shaped painted steel plate to form flanges on the left and right sides, the top surface, and the front end, and the seven langes have a pair of front and rear flanges forming an inwardly open groove between them. 7 langes, and the rear 7 langes have cutouts extending to the opening end of the front groove at the left and right corners of the front end, and
A reinforcing member having a vertical side and a horizontal side extending vertically and horizontally at each of the left and right corners and inserted into the groove is engaged with the notch and disposed along the inner surface of the groove, In addition to reinforcing the flange portion at the left and right corners, the reinforcing material does not interfere with insertion when a high-temperature refrigerant pipe of a refrigeration cycle is disposed in the groove.

- Embodiments of the Invention Figures 3 to 13 show embodiments of the present invention, in which α is a cabinet base forming a part of a cabinet, i.e., an outer box, of a refrigerator, etc., and the left side thereof (
19, the right side surface 1 and the upper surface a'7), and the 7 langes a value of the edge of the front opening Q barrel are formed by bending a single band-shaped painted steel plate that has been previously painted. The cabinet base I has bent left and right side surfaces (15+, (II has an inwardly facing substantially horizontal flange (A) on the lower edge and an inwardly facing substantially vertical flange I21 on the rear end edge), and A downward, substantially vertical flange is bent at the rear end of the upper surface.

The flange Ql is continuous with the front flange (19A) and the front flange (19A) by bending the left and right side surfaces a9, (1e and the upper surface (lη), and there is a slight gap on the back side of this front flange (19A). Fold back the back flange (19
A groove (c) opened at the front opening between the front flange (19C), which forms a double flange with B), and the rear flange (19B), which is continuous with the rear 7 flange (19B).
and a rear flange (j9D) forming a pair of flanges. The rear 7 lunge (19D) is located at the left and right corners of the front opening (toward the front opening (18)).
A notch is formed that extends diagonally downward to the opening end of the groove at an angle of approximately 45 degrees.
Rectangular locking holes (C) are formed in the vertical and horizontal sides extending over the front opening QIO of D).

(C) is a reinforcing material, which has a two-sided shape with a vertical side (5) inserted into the groove (to) and a horizontal side (to) at the left and right corners of the front opening Qll, and each side ( 5), (C), a 7-lunge bezel is formed at the outer end, and an engaging part (end) is formed by recessing the corner part to fit into the notch c14, and the vertical side (
Locking portions C311 are bent rearward at the ends of the ends of the horizontal sides (C) and (C), and are inserted and locked into the holes (C) and (C), respectively.
01) is formed.

Figure 5 shows a developed view of the left and right corners of the front opening 0 barrel.
The line C3 shows the bending corner of the same as II and the top surface.
A first notch 04 and a second notch 04 for forming the notch are formed on 'lJ, and the tongue piece facing the first notch K is connected to the front 7 langes. (19A)
It is the part that is bent backwards toward the back side of the
At its base (36A), it steps backwards [extending horizontally, a line? When the steel plate is bent at three sides, it is positioned so as to overlap directly with the back surface of the back flange (19B) and the group of tongues located on the left or right side of the front opening.

In other words, the line (3S6''e) is bent to form a predetermined pair of flanges a9, as shown in Figure 6.
Close proximity site. The reinforcing material (A) is inserted into the groove (C) of the 7 flange (11) formed in this way. This inserted state is shown in FIG.

Here, the vertical side (to), the horizontal side (c), and the flange (to) of the reinforcing material (c) are shaped in advance to fit the inner surface shape of the rear 7 langes (19D) so that they come into close contact with the inner surface of the groove (c). In addition, in order to make the effect of the reinforcing material wire effective, the width Q of the 7 lunge wire is set to 1.
The reinforcing material (C) is made to be approximately equal to the width P of No. 11 (C) and is approximately tightly fitted into the groove (C).

During this fitting, both side step portions (30A) of the engaging portion (to), (
30B) fits into the notch Q4 almost exactly, and the locking portion 011.01) fits into the locking holes (C) and (C) due to its own slight elasticity. For this reason, the reinforcing material (c) can maintain a good fit in the groove (c). Due to this fitting, the rear flanges (19D) on both sides of the notch part remain connected to the engaging part (to), so the rear flanges (19D) at the left and right dovetail parts of the front opening OI remain connected.
19D) is in a substantially continuous state. This is also effective in preventing the heat insulating material from leaking out from these corners when the outer box and the inner box are combined and filled with foamed heat insulating material, as will be described in detail later.

Here, continue from the back flange (19B) to the left and right sides a.
9.0fjI and extends to the contact part @bottle macorner part K which comes into contact with the back side of the upper surface aη, and acts to resist the force applied when the steel plate is bent. In addition, as mentioned above, the configuration of the corner portions is bilaterally symmetrical, and the left corner portion is shown in detail in the figure.

As shown in FIG. 10, the cabinet base Q4) with the reinforcing material (C) combined and reinforced at the core part is fitted with the front plate (43, back plate (44), bottom plate (4!19) and a reinforcing stand. The cabinet or outer box is completed by combining the leg angles (4F9. Both ends of the back plate Gi are fixed, and the front-facing flanges (4 units) bent on the top and left and right sides of the back plate Gi are fitted into grooves (not shown) formed on the flange QO and the bottom of the cabinet base (14 V).
C is fixed. The pedestal leg angle (4G+ is made of a steel material that is thicker than other steel plates and is formed into a substantially U-shape, and is located along the inner surface of the lower edge of the left and right sides (11), and the front 7
It is fixed to the inner surface of the lunge (19C), 7 lunge wing and Qυ with screws or the like. The bottom plate (C) has a substantially U-shaped cross section with an upper surface and left and right side surfaces, and has a flange (41
It has a flange on the lower edge and 7 langes 6υ on the rear opening edge, and 7 langes 19 are attached to the inner surface of the front plate (43).
g) and 6υ are brought into contact with the inner surface of the base leg angle (4f9), and the flange 1611 is fixed to the base leg angle (4ffl) using K screws or the like.

6a is a high-temperature refrigerant pipe that forms a part of the refrigerant condenser of the refrigeration cycle and is installed in the groove (c) of the cabinet base Q41 of the completed cabinet (4?), and is located at the exposed front end of the cabinet base α. It works to prevent sticking. The high temperature refrigerant pipe 6 is located deep inside the groove (C), but at the left and right corners of the cabinet base 04, the vertical side (5), horizontal side (C) and flange (2) of the reinforcing material (A) are located deep inside the groove (C). It will be located at the corner formed by. This state is shown in FIG. Here, the reinforcing material (A) is arranged closely to the inner surface of the groove (C), so it does not interfere with the insertion and installation of the high temperature refrigerant pipe 6 hot water into the groove. I don't.

In this way, after the cabinet) (4?) is completed and the high-temperature refrigerant piping 6a is installed, an inner box *'n is installed inside the cabinet 0η to maintain a space with the cabinet αη. By injecting and foaming a stock solution of a foamable polyurethane resin, a foamable heat insulating material is formed and a refrigerator box is constructed. This state is shown in FIGS. 12 and 13.

The inner box Oη forms a front opening edge trap outward 7 lunge C (I, and the four corners of the outward 7 lunge 09 are formed with stepped portions @O that are recessed to the rear. 7 rung 6 pull i) Inner box 07
) When installing the front 7 lunges (1) in the groove (c)
9C) and the rear 7 lunge (19D). At the left and right corners of the cabinet base I, the pressure between the reinforcing material (A) and the front 7 lunge (19C) is tightly inserted, and the step part (41 is in close contact with the engaging part (to) Therefore, the heat insulating material (1) does not leak out from the groove (3) when foaming.Here, the side surface of the stepped portion 141 has an arc shape, which allows the high temperature refrigerant pipe 53 to This prevents the step part (4G from hitting the bent part of the inner box 0?) from interfering with the work of assembling it.

Note that due to the thickness of the reinforcing material (C), there is a slight gap between the flange 01 and the rear flange (19D) in the groove (C) where the reinforcing material (E) does not exist.
This gap is so small that the cut material solidifies when it enters this gap and does not leak to the outside. If there is a risk of leakage from this gap, use reinforcing material (
In the area where the reinforcing material (c) does not exist, the inner box flange C31 is stepped backwards so that the inner box flange (to) contacts the rear 7 flange (19D) K. Leakage of the insulation material can be reliably prevented.

(F) Effects of the Invention The present invention provides a cabinet in which a band-shaped painted steel plate is bent to form inward flanges on the left and right side surfaces, the top surface, and the front end of the cabinet, as described above. The flange is sufficiently reinforced by the reinforcing material fitted into the groove without the need for conventional caulking, riveting, etc. Since this reinforcing material is fitted and held in the groove, fixing of this reinforcing material can also be accomplished by insertion work, which is extremely efficient in terms of work. Furthermore, the reinforcing material fills the notch in the rear wall of the groove so that it can also serve as a leakage preventive material for the heat insulating material at the corner portions, thereby effectively preventing leakage of the heat insulating material. Further, since the reinforcing material is closely arranged along the inner surface of the groove, it does not interfere with the insertion of the high-temperature refrigerant pipe of the refrigeration cycle into the groove, resulting in good workability.

[Brief explanation of the drawing]

FIG. 1 is a front perspective view of a conventional cabinet or outer box, FIG. 2 is a sectional view taken along line A-A' in FIG. is a front perspective view of the cabinet base, Figure 4 is an exploded perspective view of the cabinet base corner and reinforcing material, Figure 5 is a developed view of the cabinet base corner, and Figure 6 is a front view of the cabinet base corner.
Figure 7 is a sectional view taken along the line B-B' in Figure 6, Figure 8 is a front perspective view of the corner of the cabinet base with reinforcing material inserted, and Figure 9 is a front perspective view of the corner of the cabinet base with reinforcing material inserted.
The figures are a cross-sectional view taken along line C-d in Figure 8, Figure 10 is an exploded perspective view of a box for a refrigerator, etc., Figure 11 is a front perspective view of the cabinet corner with reinforcing material and high-temperature refrigerant piping inserted, Figure 12 The figure is a front perspective view of the cabinet corner with the reinforcing material, high-temperature refrigerant piping, and inner box inserted, and Figure 13 is D-D of Figure 12.
'It is a line cross-sectional view. I...Cabinet base, (19C)...Front flange, (19D)...Rear 7 langes, (C)...
Groove, (2IO...notch, ridge...reinforcement material, r3?
)...Inner box, OI...Flange, (4G...
Stepped portion, 0η...Cabinet, 63...High temperature refrigerant piping. 1st L4 2nd day

Claims (1)

[Claims] (1) A cabinet is constructed by bending a band-shaped painted steel plate to form seven flange on the left and right side surfaces, the top surface, and the front end. The front 7 langes, which form a double flange with the back surface folded back with a slight gap on the back side of the flange, are continuous with the back 7 langes and are located at the rear. and a rear flange forming a groove, and the rear seven flange has a notch extending to the opening end of the groove at the left and right corners of the front end, and has a vertical cutout at the left and right corner, respectively. A reinforcing member is provided that extends in the direction and the transverse direction and has vertical sides and lateral sides that are fitted into the groove, and the reinforcing member has a locking part inserted into a hole formed in the rear flange and the notch. K has an engaging portion that engages with the groove and is disposed approximately along the inner surface of the groove. A box for a refrigerator, etc., in which a high direct refrigerant pipe included in a refrigeration cycle is arranged in the groove.