JPS5910548Y2 - Drainage structure in insulated box - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat insulating box body used for freezing/refrigerating showcases, etc., and particularly relates to the structure of a drainage section provided at the bottom of the box body.

Generally, in order to make an insulating box in the same shape, an outer box that matches the dimensions of the box and an inner box that is slightly smaller are assembled at regular intervals via spacer blocks, and the space between them is It is manufactured by filling foam insulation material from the injection port with all gaps closed, and in particular when it is required to provide a drainage section at the bottom of the box, the following process is further carried out. It will be done.

That is, referring to FIGS. 1a to 1d, as shown in FIG. 1a in advance, a drainage hole 2 is provided at the bottom of the inner box 1, and a drain hole for fitting a drain pipe is provided at the corresponding bottom of the outer box 3. A drainage hole 4 is provided in each case, and as shown in FIG. 1b, a drainage pipe 5 is adhesively fixed at its open end to the peripheral edge of the drainage hole on the outer box side of the inner box 1 via a sealing member (not shown). do.

Next, as shown in FIG. After installing the packing 7 between the holes (Fig. 1 d), insert the foaming agent inlet (
By filling and solidifying urethane foam (not shown), the urethane foam is prevented from leaking from the connecting portions between the inner box 1 and the outer box 3 and the drain pipe 5.

However, in such a work process, since the drainage part is small compared to the size of the box body, once the drain pipe 5 is inserted into the outlet hole 4 of the outer box 3, the inner box 1 moves from left to right and back and forth. There are assembly problems in that the packing 7 cannot be moved and it is not easy to attach the packing 7 to the outlet hole 4 of the outer box 3 into which the drain pipe 5 is fitted.

The present invention was developed in view of the above problems, and its main purpose is to prevent the foaming agent that forms the foam insulation material from leaking from the outlet hole of the outer box using a simple structure. be.

In addition, the object is to improve the assemblability of the heat insulating box body.

Another object of the present invention is to allow the inner box to be moved slightly from side to side and back and forth even when the drain pipe is inserted into the outer box.

The present invention will be explained below with reference to drawings showing embodiments.

Reference numeral 13 denotes a box body of a refrigerated showcase, which has an opening and closing sliding door 9 at its upper opening and a glass window 10 at its upper front opening.

This opening/closing sliding door 9 moves along rails 11 on both sides.

The box body 13 is filled with a foamed heat insulating material 8 between the inner box 1 and the outer box 3.

Furthermore, regarding the inner box 1 and the outer box 3, a drainage hole 2 and a lead-out hole 4 are formed in these, respectively.

Reference numeral 12 denotes a drainage pipe, which consists of a lower pipe 21-1 made of a soft material such as vinyl chloride or rubber, and an upper pipe 12-2 made of a hard material.

The lower pipe 12-1 of the drain pipe 12 is provided with a bulging portion 12a.

Such a bulging portion 12a can be easily formed by pressing the upper pipe 12-2 onto the lower pipe 12-1.

Furthermore, one end of the drain pipe 12 is adhesively fixed to the peripheral edge of the drain hole 2 of the inner box 1 via a sealing member, and the other end is made to protrude from the outlet hole 4 of the outer box 3.

At this time, the bulging portion 12 a is positioned so as to be pressed against the outlet hole 4 .

This is accomplished by setting the height dimensions of spacer blocks (not shown).

On the other hand, the drain pipe 12' has one end opened in a drain hole 2' provided at or near the rail 11, and the other end opened in a manner similar to the drain pipe 12 described above so as to press the bulge 12a' into the outlet hole 4. It is made to protrude from the lead-out hole 4.

This drain pipe 12' is also divided into an upper pipe 12'-2 and a lower pipe 12'-1.

To explain the assembly procedure of the embodiment with the above structure, first, on the inner box side, a drain hole 2 is provided at the bottom of the inner box 1, and a drain hole 2 is provided at the bottom of the outer box 3 for fitting the drain pipe 12. A lead-out hole 4 is provided in advance.

Then, the upper pipe 12-2 of the drainage pipe 12 is glued and fixed in correspondence with the drainage hole 2 of the inner box 1, and then the lower pipe 1
2-1 is press-fitted into the small diameter portion of the upper pipe 12-2.

Then, the inner box 1 is set in a predetermined position in the outer box 3 via a spacer block (not shown).

At this time, the bulging portion 12a of the drain pipe 12 is made to bite into the outlet hole 4 of the outer box 3.

On the other hand, on the rail side, the rail 11 is not assembled in advance, but a drainage pipe 12', which is an enlarged version of the upper pipe 12'-2 and the lower pipe 12'-1, is attached to the side wall of the box body 13 in the bulged portion 12a. ' to keep the outlet hole 4 of the outer box 3 closed.

In the above state, in Fig. 2, front A, inner box 1 side B,
The back surface C, the bottom surface D, the side surface E, and the side surface corresponding to the side surface E are held down with a jig, and a foaming agent that forms a foamed heat insulating material is injected into the space between the inner box 1 and the outer box 3.

Thereafter, when the foaming agent solidifies, the drain pipe 12, 12' is embedded in the foam insulation material 8 and firmly fixed.

Thereafter, accessories such as the rail 11 are assembled to form a freezing showcase as shown in the embodiment.

Now, in this embodiment, when the inner box 1 is set in a predetermined position, the bulging part 12a of the drain pipe 12 moves in the left-right and front-back directions, and even if this moves, the third
As shown by the two-dot chain line in the figure, since the bulging portion 12a closes the outlet hole 4 of the outer box 3, the position of the inner box can be adjusted by freely shifting it back and forth and left and right.

There is also the effect that the conventionally used packing can be eliminated and costs can be reduced.

The present invention has been explained above with reference to examples, and the drainage pipe 1
2.12' may be formed as a single piece without being divided into two parts, and the upper end of the drainage pipe may correspond to other parts requiring drainage.

As described above, the present invention provides a heat insulating box body in which a foamed heat insulating material 8 is filled between an inner box 1 and an outer box 3, and a drain pipe 12 made of a soft material and having a bulging part 12a in the outer box 3. A drain hole 4 is bored, one end of the drain pipe 5 corresponds to the drain hole 2 of the inner box 1, etc., and the other end projects from the drain hole 4 of the outer box 3, and the bulging portion 12a is pressed into the outlet hole 4, it is possible to prevent leakage of the foaming agent with an inexpensive structure, and has the effect of greatly improving assembly workability.

[Brief explanation of drawings]

Figures 1 a to d are end views showing part of the conventional assembly process for manufacturing a heat insulating box body having a drainage part, showing the vicinity of the drainage part in order, and Figure 2 is an end view showing an example of the present invention. FIG. 3 is a sectional view of an embodiment of the present invention. 1...Inner box, 2...Drain hole, 3...
... Outer box, 4 ... Outlet hole, 8 ... Foam insulation material, 13 ... Box body, 9 ... Opening/closing sliding door, 10 ... ...Glass window, 11...Rail, 12...Drain pipe, 12'...
・Drainage pipe, 12a...Bulging part.

Claims (1)

[Scope of utility model registration request] In an insulated box body filled with foam insulation material between an inner box and an outer box, an outlet hole for a drain pipe made of a soft material and having a bulge is bored in the outer box, and one end of the drain pipe is inserted into the inner box. It is characterized by being made to correspond to a drainage hole of a box, etc., and having the other end protrude from the outlet hole of the outer box, and the bulging part being pressed against the outlet hole, thereby preventing leakage of the foaming agent of the foam insulation material. Drainage structure in an insulated box body.