JPH0117032Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a connection structure for a heat insulating box such as a refrigerator, and in particular connects an outer box and an inner box without the need for taping, etc., and prevents foam leakage. It relates to new improvements for.

b. Prior Art Various configurations have been adopted and proposed as connection structures for insulation boxes of refrigerators, etc., which have been used in the past, but typical configurations are those shown in Figures 6 and 6. As shown in Figure 7.

That is, in the configuration shown in FIG.
are provided, and locking portions 3a and 3b formed at both ends of this connection frame 3 engage with outer ends 1b and 2b of the outer box 1 and inner box 2. Furthermore, the screws 4 provided on the connection frame 3 are connected to each connection portion 1a.
and 2a, the outer box 1 and the inner box 2 are integrally connected to each other by the connection frame 3.

Further, in the configuration shown in FIG. 7, a pair of engaging members 3c and 3d are formed approximately at the center of the connecting frame 3, and each engaging protrusion is formed on each outer side of each engaging member 3c and 3d. 3e and 3f were engaged with the tips of the connecting parts 1a and 2a, and the outer box 1 and the inner box 2 were integrally connected by the connecting frame 3.

In addition, a flexible connection frame has already been proposed in which first and second joining members are formed to engage with a bent part provided at the connection part between the outer box and the inner box (1999-1999).
(See Publication No. 18679).

c. Problems to be Solved by the Present Invention The conventional configurations described above have various problems. For example, in the conventional configuration shown in FIG. screws are required, which requires a lot of assembly time, and the cost of attaching tape to prevent foaming liquid leakage is extremely high.

Further, in the conventional structure shown in FIG. 7, no screws are required to attach the connecting frame, but the connection between the connecting frame and each box is not sufficient, so leakage of the foaming liquid cannot be prevented. Furthermore, in both FIGS. 6 and 7, the engaging portion 3a protruded and was exposed on the front surface of the outer box, resulting in poor sealing and poor aesthetic appearance.

In addition, even in connection frames that have already been proposed,
In order to facilitate installation, it is necessary to make the end of the connecting frame shorter than the first joining member, and the connecting frame cannot be extended to the entire connecting part of the outer box, which has the same drawback. For such a connecting frame, it is necessary to form a joining member that tightly fits into the bent portion of the outer box or the inner box, and manufacturing such a joining member is extremely difficult.

d.Means for solving the problems The purpose of this invention is to provide extremely effective means for quickly eliminating the above-mentioned drawbacks, and this invention has been developed to achieve this purpose. The gist is that in the connection structure of a heat insulating box such as a refrigerator, which consists of a connection part of the outer box, a connection part of the inner box, and a connection frame, the bent part formed at the end of the connection part of the outer box and the inner an outer end formed on the connecting portion of the box, a locking portion formed on the connecting frame that engages with the outer end, and a locking portion provided on the connecting frame parallel to and spaced apart from the main body thereof. a first connecting member having an extending portion, the end of which is engaged with a claw portion that engages with the bent portion, and extending toward the claw portion of the first bonding member provided on the connection frame; consisting of a clamping piece that clamps the bent part between the claw part and its tip, and a second joint member provided on the connection frame that has a substantially mountain shape and whose peak part joins to the inner surface of the inner box, When the connecting frame is attached, the locking part thereof engages with the outer end part, and the claw part formed on the first joining member engages with the bent part,
Further, the claw portion and the clamping piece are characterized in that the bent portion is clamped.

e Function Since the second joining member provided on the connecting frame has a substantially mountain-shaped shape, this second joining member is placed facing the opening between the connecting part of the outer box and the inner box, and is connected to the main body of the connecting frame. The connecting part of the inner box can be easily inserted between the second joining member, and then the locking part formed on the connecting frame is engaged with the outer end formed on the connecting part of the inner box, At the same time, the bending portion is clamped between the first joining member and the clamping piece, and the connecting frame is attached.

After installation, the locking part formed on the connection frame engages with the outer end of the inner box, and the claw part of the first joining member formed with the claw part engages with the bent part of the outer box, This bent part is held between the claw part and the holding piece,
The connection frame will not shift from its mounting position.

Furthermore, when foaming the foaming agent, foaming is applied to a portion of the first joining member that extends parallel to and spaced apart from the main body of the connection frame, and a portion of the second joining member that is approximately mountain-shaped except for the top of the mountain. Since pressure is applied, there is no leakage of the foaming agent from between the connection frame and the inner and outer boxes.

f. Embodiments Hereinafter, preferred embodiments of the connection structure for a heat insulating box of a refrigerator or the like according to the present invention will be described in detail with reference to the drawings.

Note that the same or equivalent parts as in the conventional example will be described using the same reference numerals.

1 to 5 show a preferred embodiment of the connection structure of a heat insulating box for a refrigerator or the like according to the present invention, and the outer box 1 and the inner box 2 have a front side as shown in FIG. It is structured in an open box shape. The outer box 1 and the inner box 2 are connected to each other by a frame-shaped connection frame 3, and connection joints 4 are provided at the corners.

FIG. 1 shows a cross section taken along the line A-A' in FIG. A locking portion 3b formed at one end of the connecting frame 3 engages with an outer end portion 2b of the connecting portion 2a of the inner box 2.

A first joint member 3c extending substantially parallel to the connection frame 3 is integrally formed on the support member 3j, which is formed integrally with the lower surface 3h of the connection frame 3. A mountain-shaped bent portion 31 is formed at the center of the first joining member 3c, and a claw portion 3e is formed at the tip thereof. This claw portion 3e engages with a bent portion 1c hanging downward from the outer box 1,
The connecting portion 1a is held in a state in which it cannot move in the direction of arrow A by the claw portion 3e.

Furthermore, an elastic clamping piece 3k is integrally formed at a position spaced apart from the support member 3j on the lower surface 3h of the connection frame 3, and this clamping piece 3k is connected to the first connection part. 1a, and is formed to extend obliquely downward toward the first connecting portion 1a, and abuts one side of the bent portion 1c of the first connecting portion 1a, and the bent portion 1c of the first connecting portion 1a is connected to the holding piece. 3k and the claw portion 3e.

Furthermore, a second joint member 3d is formed integrally from the lower end of the support member 3j in a direction substantially parallel to the connection frame 3 and opposite to the first joint member 3c. The outer surface of the peak portion 3g of the second joint member 3d is connected to the second joint member 3d of the inner box 2.
The connecting portion 2a of the inner box 2 is connected to the lower surface of the connecting portion 2a, and the connecting portion 2a of the inner box 2 is firmly and elastically held between the connecting frame 3 and the mountain top portion 3g.

Therefore, the connecting frame 3 is reliably positioned in the left-right direction on the outer box 1 and the inner box 2 by the claw portion 3e, the clamping piece 3k, and the locking portion 3b, and An opening 5 formed between the inner box 1 and the inner box 2 is completely closed by the connecting frame 3.

Next, a case where the connection frame 3 is attached to the outer box 1 and the inner box 2 will be explained.

First, in the state shown in FIG. 3, when the connecting frame 3 is inserted in the direction of arrow C, the connecting part 2a is held between the connecting frame 3 and the second joining member 3d, and 3 is temporarily mounted on the outer box 1 and inner box 2.

In the above state, as shown in FIG. 2, the locking portion 3b of the connection frame 3 is not engaged with the outer end 2b of the inner box 2, and the locking portion 3b of the connection frame 3 is not engaged with the outer end portion 2b of the first joint member 3c. The claw portion 3e and the first connecting portion 1a are not engaged with each other. Therefore, when external pressure is applied to the outer box 1 from the direction of arrow D in the state shown in FIG. Since the first connecting portion 1a is already tilted downward, the first connecting portion 1a does not come into contact with one side of the bent portion 1c and bite into each other, and the first connecting portion 1a escapes in the direction shown by the arrow E. Bent part 1 of 1a
c from below and engages with the other side of the bent portion 1c, and the holding piece 3k abuts on one side of the bent portion 1c. Further, the locking portion 3b comes into contact with the outer end portion 2b of the inner box 2, and the mounting operation is completed.

In the above condition, outer box 1 and inner box 2
After attaching the connection frame 3 to the outer box 1 and inner box 2,
When the foaming liquid 6 is injected into the first
The engagement between the claw portion 3e of the joining member 3c and the bent portion 1c of the first connecting portion 1a creates a strong pressure state, and the outer box 1 and the connecting frame 3 are firmly pressed and held without any gap. . Further, the inner box 2 is strongly held between the connecting frame 3 and the peak portion 3g of the second joining member 3d, and the inner box 2 and the connecting frame 3 are firmly pressed and held without any gap. Ru.

Furthermore, the configuration shown in FIG. 5 shows another embodiment of the connection structure for a heat insulating box such as a refrigerator according to the present invention, in which first and second joint members 3c and 3d are formed on the support member 3j. Unlike the first embodiment, each of the joining members 3c and 3d is connected to the connecting frame 3.
and the holding piece 3k is formed integrally with a part of the first joining member 3c,
Although the detailed explanation is omitted because it is the same as that of the first embodiment, it is possible to achieve the same effects as the configuration of the first embodiment.

In the above-mentioned embodiment, the mounting position of the connection frame 3 with respect to the outer box 1 and the inner box 2 is determined by the claw portions 3e and the locking portions 3b.

g. Effects of the invention The connection structure for a heat insulating box for a refrigerator, etc. according to the invention has the above-mentioned structure and function, so that after the connection frame is attached and before the foaming agent is foamed, Even if force is applied in either the right or left direction, the connecting frame is securely held by the claws, clamping pieces, and locking parts, so it will not shift and will not shift. This can effectively prevent foam leakage caused by.

Furthermore, the work of attaching the connecting frame over the entire connecting portion of each box on the same plane is made much easier and more reliable, and the reliability can be improved.

[Brief explanation of the drawing]

Figures 1 to 5 show the connection structure of insulation boxes for refrigerators, etc. according to the present invention. Figure 1 is a sectional view showing the boxes connected, and Figures 2 and 3 are in the middle of connection. 4 is a perspective view showing the heat insulating box, FIG. 5 is a sectional view showing another embodiment, and FIGS. 6 and 7 are sectional views showing the conventional configuration. . 1...Outer box, 2...Inner box, 3...Connection frame, 1a and 2
a... First and second connecting parts, 3b... Locking parts, 3c... First joining members, 3d... Second joining members, 3e... Claw parts,
3j...supporting member, 3k...clamping piece, 3l...bending part,
6... It is a foaming liquid.

Claims (1)

[Claims for Utility Model Registration] (1) In a connection structure for a heat insulating box such as a refrigerator, which is composed of a connection part 1a of an outer box 1, a connection part 2a of an inner box 2, and a connection frame 3, the connection of the outer box 1 a bent portion 1c formed at the end of the portion 1a; an outer end portion 2b formed at the connecting portion 2a of the inner box 2; and an outer end portion 2b formed at the connecting frame 3.
a locking portion 3b that engages with the connecting frame 3; and a claw portion 3e that is provided on the connection frame 3 and has a portion that extends parallel to the main body at a distance, and that engages with the bent portion 1c at the end thereof. a first joint member 3c formed with a first joint member 3c, which extends toward a claw portion 3e of the first joint member 3c provided on the connection frame 3;
a clamping piece 3k that clamps the bent portion 1c between its tips; and a second joint member provided on the connection frame 3 that is substantially mountain-shaped and whose peak portion 3g is joined to the inner surface of the inner box 2. 3d, and when the connecting frame 3 is attached, the locking portion 3b thereof engages with the outer end portion 2b, the claw portion 3e formed on the first joint member engages with the bent portion 1c, and the A connection structure for a heat insulating box of a refrigerator or the like, characterized in that a claw part 3e and a clamping piece 3k clamp the bent part 1c. (2) The first and second joining members 3c and 3d are configured to be integrally formed with a support member 3j formed on the connection frame 3. Connection structure for insulation boxes of refrigerators, etc. described in 2). (3) The first and second joining members 3c and 3d are each independently formed integrally with the connecting frame 3,
Connection structure for insulation boxes of refrigerators, etc. described in (2). (4) A connection structure for a heat insulating box for a refrigerator or the like as set forth in claim (5) of the registered utility model, characterized in that the holding piece 3k is integrally formed with the first joining member 3c.