JPH0117031Y2 - - 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 relates to a novel improvement for connecting an outer box and an inner box without the need for taping or the like. It is.

b. Prior Art Conventionally, various configurations have been adopted as connection structures for insulation boxes of refrigerators, etc., but typical configurations are shown in Figures 7 and 8. It is as expected.

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. 8, 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 are the respective connection parts 1a
and 2a, and the outer box 1 and the inner box 2
are integrally connected by the connection frame 3.

Further, in order to prevent the foaming liquid from leaking, tape such as paper tape is attached to the joints between the inner surface of the connection frame 3 and the connection parts 1a and 2a. Further, the tape was also applied to the joints between the connecting portions 1a and 2a and the engaging protrusions 3e and 3f.

Furthermore, the connecting frame is provided with a first joining member that joins to the outer box, a second joining member that joins to the inner box, and a connecting part that connects both joining members, and the connecting part is applied to the foaming pressure of the foam insulation material. It has already been proposed to prevent leakage of the foaming liquid from the joint between the first and second joint members and the outer box or the inner box by pressing the first and second joining members with each other (see Japanese Utility Model Application Publication No. 49-20162).

c Problems to be solved by the present invention The conventional configuration as described above has various problems, and the conventional configuration shown in Fig. 7 requires many screws to attach the connection frame. This requires a lot of assembly time, and the cost of attaching tape to prevent the foaming liquid from leaking also increases significantly.

The configuration shown in Figure 8 does not require screws to attach the connection frame, but since the connections between the connection frame and each box are not sufficient, it is necessary to attach tape to prevent foaming liquid from leaking. Assembly costs were increasing.

In addition, in the already proposed means of pressing the first and second joining members against the inner surfaces of the outer box and the inner box by applying foaming pressure to the connecting portion between the two, it is possible to It has the disadvantage that it is difficult to mount it, particularly when the connecting portions of the outer box and the inner box are on the same plane, and to accurately position and maintain that position.

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 its gist is to In the connection structure of a heat insulating box such as a refrigerator, which is composed of a connecting part of an inner box, a connecting part of an inner box, and a connecting frame, a bent part formed at the end of the connecting part of the outer box and a step part formed at the joint part of the inner box. a locking portion formed on the connection frame that engages with the outer end portion; and a portion provided on the connection frame that extends parallel to and spaced from the main body of the connection frame; It consists of a first joining member having a claw portion formed at an end thereof to engage with the bent portion, and a second joining member having a substantially mountain-like shape and having a peak portion that joins to the inner surface of the connecting portion of the inner box. The first bonding member is pressed against the outer box and the second bonding member is pressed against the inner box by foaming of the foaming agent.

e Function Since the second joint member provided on the connection frame has a substantially mountain-like shape, this second joint member is connected to the main body of the connection frame by facing the opening between the connection part of the outer box and the inner box. The connection part of the inner box can be easily inserted between the second connection member, and after the connection frame is installed,
The locking part formed on the connection frame engages with the stepped outer end formed on the connection part of the inner box, and
Since the claws formed on the joining member engage with the bent portions at the ends of the connecting parts on the outer box, not only is it extremely easy to install the connecting frame, but the connecting frame can be accurately positioned even before foaming with the foaming agent. The mounting position can be maintained.

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.

The configurations shown in FIGS. 1 to 6 are for showing the connection structure of a heat insulating box such as a refrigerator according to the present invention, and the outer box 1 and the inner box 2 have an open front as shown in FIG. It is structured in a 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 engages with the outer end 2b of the inner box 2.

The elastic first joint member 3c, which is formed integrally with the lower surface 3h of the connection frame 3, is formed in a substantially U-shape, and has a claw portion 3e formed at the tip of the first joint member 3c. is engaged with the connecting portion 1a hanging downward from the outer box 1, and the connecting portion 1
a is held in a state where it cannot move in the direction of arrow A by this claw portion 3e.

Furthermore, a second connecting member 3d having elasticity is integrally formed at a position apart from the first connecting member 3c on the lower surface 3h of the connecting frame 3, and a peak of the second connecting member 3d is formed. Part 3
The outer surface of g is joined to the lower surface of the connecting portion 2a of the inner box 2, and the connecting portion 2a of the inner box 2 is firmly and elastically held between the connecting frame 3 and the peak portion 3g.

Therefore, the connecting frame 3 is reliably positioned in the left and right direction on the outer box 1 and the inner box 2 by the claw portions 3e and the locking portions 3b, and also The opening 5 formed between the connecting frame 3 and the connecting frame 3 is completely closed.

In the configuration shown in FIG. 1 as described above, when foaming liquid 6, which is a foaming agent, is injected into the outer box 1 and inner box 2, the foaming force of this foaming liquid 6 acts strongly in the direction shown by arrow B. The first bonding member 3c and the connection portion 1a are in strong pressure contact, and the outer box 1 and the connection frame 3 are firmly pressed and held without any gap. Furthermore, the inner box 2 is connected to the connection frame 3.
The inner box 2 and the connection frame 3 are firmly held in pressure contact with each other without any gap.

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

First, when the connection frame 3 is inserted in the direction of arrow C in the state shown in FIG. 2, the connection part 2a is inserted between the connection frame 3 and the second joining member 3d, and In the state shown in FIG. 4, the connection frame 3 is mounted on the outer box 1 and the inner box 2.

In the above state, as shown in FIG. 4, the locking portion 3b of the connection frame 3 is not engaged with the outer end portion 2b of the inner box 2, and the claw portion of the first joining member 3c is not engaged with the outer end portion 2b of the inner box 2. 3e and the connecting portion 1a are not engaged with each other. In the state shown in Figure 4,
When external pressure is applied to the outer box 1 from the direction of arrow D (for example, by pressing by hand or by pressing with a jig, etc.), the connecting portion 1a is pressed against the claw portion 3 of the first joining member 3c.
e and engages with the engaging portion 3i of the claw portion 3e. Due to the above-described operation in which the connecting portion 1a climbs over the claw portion 3e, the connecting frame 3 is slid to the left in FIG. 3b, the connecting frame 3 is mounted on the outer box 1 and the inner box 2 as shown in FIG.

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.

Furthermore, the configuration shown in FIG. 6 shows another embodiment of the connection structure for a heat insulating box body according to the present invention, and each of the joint members 3c and 3d is connected to a support member 3j formed on the connection frame 3. This structure is formed integrally with the above-mentioned parts, and can obtain substantially the same effect as the above-mentioned embodiment.

Therefore, according to the embodiment of the present invention, each of the joining members 3c and 3d is made of an elastic material and can have a longitudinal shape, so that the foaming force of the foaming liquid can be sufficiently applied. can be received, and a sufficiently close fit can be obtained.

g. Effects of the invention Since the present invention has the above-mentioned structure and function, it is not only easy to attach the connecting frame to the connecting parts of the outer box and inner box, but also to the foaming surface of the foaming agent. The attached connection frame can maintain its mounting position accurately. Also, when foaming,
Each joining member receives sufficient foaming pressure from the foaming liquid, and the connecting frame achieves close contact with the connecting portion of each box, eliminating the need for taping to prevent foaming agent from leaking.

Therefore, the cost of attaching the connection frame to the outer box and the inner box was significantly reduced, and reliability was also significantly improved.

[Brief explanation of drawings]

Figures 1 to 6 are for showing the connection structure of a heat insulating box such as a refrigerator according to the present invention. Figures up to Figure 4 are cross-sectional views showing the process of attaching the connection frame to the outer and inner boxes, Figure 5 is a perspective view of the refrigerator, etc. with the front door removed, and Figure 6 is a diagram showing the connection structure according to the present invention. 7 and 8 are cross-sectional views showing other embodiments, and FIGS. 7 and 8 are cross-sectional views showing conventional configurations. 1 is the outer box, 2 is the inner box, 3 is the connection frame, 1a and 2
a is the connecting part, 2b is the outer end, 3b is the locking part, 3c
is the first joint member, 3d is the second joint member, 3e is the claw portion, 3g is the peak portion, 3h is the lower surface, 3i is the engagement portion,
3j is a support member, 5 is an opening, and 6 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 forming a stepped portion formed on the connecting portion 2a of the inner box 2; and the outer end portion 2b formed on 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. , and a second joining member 3d, which is substantially mountain-shaped and has a mountain top portion 3g that joins with the inner surface of the connecting portion 2a of the inner box 2, and is made of Therefore, the first joint member 3c is pressed against the outer box 1, and the second joint member 3d is pressed against the inner box 2.A connection structure for a heat insulating box body of a refrigerator or the like. (2) The first joining member 3c and the second joining member 3
d is a support member 3j formed on the connection frame 3;
A connection structure for a heat insulating box for a refrigerator or the like as claimed in claim 1, characterized in that the connection structure is integrally formed from the above.