JPS59138874A - Cabinet - 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 Field of Industrial Application The present invention relates to a cabinet formed by bending a painted steel plate, and can be applied to an outer case constituting the main body of a refrigerator or the like.

(B) Prior art Figure 1 is a front perspective view of a conventional outer box (1) of a refrigerator, etc., and shows the edges of the left side (2), right side (3), and top surface (4th door and front opening 15). The flange 16) is formed by bending a single strip steel plate, and the bottom plate (7), back plate (8), and lower edge plate 19) with an opening +5J are welded to this. Finally, these assembled items are painted to give them a surface finish. In this case, the flange 16) is
, 4) and the left and right side surfaces (2) and (3) are bent to form a front flange (6A) and a back flange (6A) that is continuous with this front flange (6A) and folded back in close contact with the back surface of this front flange (6A). 6B) and a front flange (6C) formed with
Continuing with the back flange (6B), after forming a groove +lQ with the back flange (6B), 7 langes (6D) are formed.
The front flange (6C) of the 7 langes 16) on the upper side of the opening (5)
) Overlap the left side and right side flanges (6) of the Fi Sekiguchi (5) on the back side of the front 7 langes (6C), and spot weld this overlapping part at the X-marked part u to prevent the overlapping part from opening. ing.

However, when bending the strip steel plate coated with the outer box txt to form the top surface (4), left and right side surfaces t2+ (31, and 7 lunges (6)), if the bending angle or bending radius is made small, the coating film Since the front flange (6C) may peel off or crack, the bent portions of the front flange (6C) l'lJ and (13) will have a large radius, making the gap at this part too narrow, which is unfavorable in terms of appearance. Since the paint film on the housing will peel off, welding such as spot welding is not possible, so caulking, gluing,
Since the overlapping part is fixed with rivets, it is necessary to make holes for the rivets in the overlapping part, which increases the number of steps required for adhesion work, and rough crimping has the disadvantage of causing scratches on the surface.

Purpose of the Invention The present invention is a method of forming flanges on the left and right sides and the top surface of a cabinet, as well as on the front end, by bending a strip-shaped painted steel plate that has been pre-painted. The present invention provides a cabinet structure in which sufficient strength can be obtained without riveting or caulking the flange.

Another object of the present invention is to use a cabinet formed by bending painted steel plates as an outer box, combine this outer box with an inner box, and fill the space between the two boxes with foam insulation material such as polycrethane foam. When a 1lfi thermal box is constructed by filling, a structure is provided in which the foamed heat insulating material does not leak at the corners of the seven lunges.

(D) Structure of the Invention A cabinet in which flanges on the left and right side surfaces, the upper surface, and the front end of the cabinet are formed by bending a band-shaped painted steel plate, and the flanges are arranged in front and rear, forming grooves that open inwardly between them. What is the pair of flanges? The rear flange has a notch extending to the opening end of the groove at the left and right corners of the front end, and the rear flange has a notch extending to the opening end of the groove at the left and right corners of the front end, and the rear flange has a cutout extending to the opening end of the groove at the left and right corners of the front end. The cabinet structure includes a reinforcing member extending into the groove and forming a vertical side and a lateral side, the reinforcing member being engaged with the notch and inserted into the left and right corners to form a front E-y lunge. By reinforcing these corners, the cabinet can have sufficient strength at these corners.

←E) Embodiments of the invention Examples of the invention are shown in Figure 6 and after, and 2
114) is a cabinet that forms the outer box of a refrigerator, etc., and its left side C1ω, right side ([6) and top surface (
[7) and the flange of the edge of the front opening a of camphor (formed by bending a strip of painted steel plate that has been pre-painted with I).The left and right sides of the cabinet t14.115)
At 1161, the lower end edge is inwardly directed approximately horizontal flange (2
An inwardly facing substantially vertical large flange +211 is bent at the rear end of the upper surface (11), and a downwardly facing substantially vertical flange +221f is bent at the rear end of the upper surface (11). Although not shown in the figure, the bottom plate is fixed with screws, etc. to a support material fixed to the flange (21) with screws, etc.
) An outer box is constructed by fixing the back plate over the t2 decoy 2 with screws or the like.

The flange is 11+1 on the left and right sides. b) and top surface 11
η is bent to form a front flange (19A) and a front flange (19A) continuous with this front flange (19A).
7 lunges (1
9B) and the front 7 lunge (19C) that forms a double 7 lunge
and a rear 7 flange (19)) which is continuous with the rear flange (19B) and forms a groove 1 open in the curved surface opening 0 barrel between the rear flange (19B) and the rear flange (19B). It makes up a lunge. The rear flange (19D) has a notch 124) extending diagonally downward to the opening end of the groove (23) at an angle of approximately 45 degrees toward the front opening 0 at the left and right corners t of the front opening α mark. cage, and rear flange (
190) has rectangular locking holes t251 formed on the vertical and horizontal sides of the front opening a, respectively. 2) is a reinforcing material, which has a two-sided shape with a vertical side tz7 and a horizontal side inserted into the groove (c) at the left and right corners of the front opening, and the outer end of each side A flange (c) is formed on the corner part, and a retaining part '30+ is formed by recessing so as to fit into the notch t24), and the tip of the vertical side @ and the horizontal side 1281 are provided with a rearward part. Bent hole (7:5+ (25)
A locking portion 6υc3υ is formed to be inserted and locked in the respective parts.

Figure 5 shows a developed view of the left and right corners of the curved opening (18), where line (321) indicates the bending corner between the left side (country or right side +16) and the top surface ([7)]. The first notch (3 wrinkles and notch (24
) is formed, and the tongue piece (35) facing the first notch (front side) is formed with the front 7 langes (
19A), and the second tongue piece (36) that is continuous with the front flange (19A) is bent rearward at its base ('') 6A,). When the steel plate is folded at extension line 0, there is a front opening (
18) located on the left or right side of the mechanism.
9B) and the tongue piece (located so as to overlap directly on the back side of 3()).

That is, the line (3) is bent at a predetermined pair of flanges 1
The state where 1→ is just formed is shown in FIG. 6, and both ends (41A) (41B) of the S front flange ('I'9C) are close to each other. The flange groove (231) formed in this way
Reinforcement material 17!0 is inserted into.

This inserted state is shown in FIG. Reinforcement +2
In order to make the effect of 6) effective, the width Q of the flange (C) is approximately equal to Its p of the groove (23), so the reinforcement material (4) is
fits almost snugly into the groove. During this fitting, the engaging portion (steps on both sides of the row (30A) (30A) are cut out at C24.
), and the locking part (3nct+ engages with the locking hole I25) (2■ due to its own slight elasticity. For this reason, the reinforcing member +26) fits into the groove i23. can be maintained in good condition. By fitting with the notch (241 part, the rear flanges (19D
) is maintained in a continuous state with one momme of the engagement recess, so that the rear flange (19D) is substantially continuous at the left and right corners of the front opening ua. This is also effective in preventing the insulation material from leaking out from these corners when the outer box and the inner box are combined and filled with foam insulation material. In the above, the contact part (
42) extends to the corner portion and acts to resist the force applied when the steel plate is bent. Furthermore, in the above description, the configuration of the corner portions is bilaterally symmetrical, and the left corner portion is shown in detail in the figure.

As mentioned above, the reinforcing material (4) is combined with the inner box 37), keeping a space with respect to the cabinet with reinforced corners, i.e., the outer box, and foaming is performed in the space between the two boxes using the in-situ foaming method. By injecting and foaming an undiluted solution of polyurethane resin, a foamable insulation material (!A) is formed to form the refrigerator body.The inner box (3'7) has an outward flange formed on the front opening edge. Therefore, this flange (3 → is the groove (
23) is inserted between the front flange (19C) and the rear flange (19D), and in the left and right corners 2, it is inserted tightly between the reinforcing member (26) and the front flange (19C). The heat insulating material does not leak out from the groove (23). In addition, depending on the plate thickness of the reinforcing material (r26), there is a slight gap between the flange (3) and the rear flange (19D) in the groove (2) where the reinforcing material (26) does not exist. The gap is small, and the insulation solidifies when it enters this gap and does not leak outside. If there is a risk of leakage from this gap, reinforcing material (inside the area where 261 does not exist) should be used to eliminate this gap. Reinforcing material C by stacking the 6 box flanges backwards
26), the inner box flange C91 tightly abuts the rear flange ('19D), and leakage can be reliably prevented as a result of the sobriety insulation system. +41 is a part of the refrigerant condensing pipe of the refrigeration system inserted into the groove 1d to prevent dew from forming on the front end of the cabinet.

(f) Effects of the present invention As described above, 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 and the upper surface of the cabinet, as well as on the front end. This 7
The lunge is fully reinforced without conventional caulking or riveting. 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.

[Brief explanation of the drawing]

Fig. 1 is a front perspective view of a cabinet with a conventional structure, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, Figs. 6 to 10 show embodiments of the present invention, and Fig. 6 is a left and right side view. and a front perspective view of the cabinet part with the top surface and front end flange bent,
Figure 4 is an exploded perspective view of the cabinet core and reinforcing material.
Figure 5 is a developed view of the cabinet corner, Figure 6 is a front view of the cabinet corner, and Figure 7 is B-13 in Figure 6.
Fig. 8 is a front perspective view of the cabinet corner with reinforcing material inserted, Fig. 9 is a c-c' sectional view of Fig. 8, and Fig. 10 is a combination of inner boxes and filled with heat insulating material. This is a cross-sectional view of the front end of the insulated box. En...cabinet, (L cap...right side, 1 [6)...
...Left side, (lη...Top surface, u8)...Front opening, (to)...Flange, (19A)...Front 7 lange, (19B)...Back flange, (19C) ...
Front 7 lunges, (19D) ... Back 7 lunges, 123)
... Groove, (to) ... Notch, +20 ... Hole, 126+
...Reinforcement material, Qη...Vertical side, r')A...Horizontal side,
': 101...Engaging part, Cυ...Locking part. , i:・i Desk;2]・j 911th

Claims (1)

[Claims] 1. A cabinet in which flanges on the left and right sides, the top surface, and the front end of the cabinet are formed by bending a band-shaped painted steel plate, and the flanges are continuous with the front flange and the front flange on the back side of the front 7 langes. Double layer 7 consisting of back side 7 lunge folded back with a slight gap
A pair of flanges is constituted by a front flange forming a flange, and a rear flange that is continuous with and rearward of the back flange and forms an inwardly open groove between the back flange and the back flange, and the rear flange is The front end has a notch extending to the open end of the groove at the left and right corners, and a reinforcing material is provided that engages with the notch and a locking part inserted into a hole formed in the rear flange. A cabinet comprising a retaining part.