JPH0126810B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an assembly jig for a heat insulating box used in refrigerators and the like.

[Technical background of the invention and its problems]

For example, when manufacturing an insulating box for a refrigerator, conventionally a plastic inner box is inserted into a rectangular frame-shaped steel plate main body, and in this case, the inner box is elastically deformed while the main body is An assembly jig is used that is inserted into the interior. However, when using such an assembly jig, there is a problem that it is difficult to automate the assembly process (the process of inserting the inner box into the main body) because the operation and movement of the assembly jig is not simple. Even if automation were to be achieved, the structure of the assembly jig would be extremely complicated, and these points would be factors that would increase personnel costs, manufacturing equipment costs, and ultimately the manufacturing cost of the heat insulating box.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object thereof is to provide an assembly jig for a heat insulating box that has an extremely simple structure and is effective in automating the assembly process.

[Summary of the invention]

The present invention provides an insulating box body in which an inner box, left and right side plates, a rear plate, a bottom plate, and a top plate are provided separately, and these parts are integrated through their respective flanges and engagement means. In the assembly jig, an inner box guide into which the periphery of the front opening of the inner box is fitted from above, a bottom plate guide on which the bottom plate is placed from above, and rotatably provided on both sides of the inner box guide and the bottom plate guide. a pair of mounting surfaces on which the front edges of the left and right side plates are placed, and in response to the rotation of the mounting surfaces, the left and right plates are pressed and moved toward the inner box and the bottom plate by the placement surfaces; A rotation member is provided.

[Embodiments of the invention]

Hereinafter, an embodiment in which the present invention is applied to a two-temperature refrigerator will be described with reference to the drawings.

In Figure 1 showing the appearance of a two-temperature refrigerator,
1 has a freezer compartment and a refrigerator compartment (both not shown) inside.
2 is a door for the freezer compartment, and 3 is a door for the refrigerator compartment.

2 to 6 show the specific structure of the heat insulating box 1 and the refrigeration cycle incorporated therein, which will be described below. Reference numeral 4 denotes a plastic inner box for forming a refrigerating compartment, and the periphery of a rectangular front opening 5 is integrally formed with outwardly extending flanges 6a, 6b, 6c, and 6d. In this case, each flange portion 6a, 6
b, 6c, and 6d are formed in a waveform as shown in FIG. Reference numeral 7 denotes a freezer unit as an inner box for forming a freezing chamber, and this is constructed as follows.

That is, reference numeral 8 denotes a cooler for the freezer, which is made up of a U-shaped cooling plate 8a made of aluminum, for example, with a meandering refrigerant pipe 8b attached to the outer surface, and a freezer side 9 made of plastic and a freezer side 9 made of plastic on both sides. 10 is attached by appropriate engagement means. Reference numeral 11 denotes a plastic rectangular insulating frame attached to the front opening edge formed by the freezer compartment cooler 8 and the freezer side plates 9 and 10, and the four peripheral edges thereof are provided with outwardly directed flange portions 12a, 12b, and 12c. , 12d are integrally formed to extend, and in this case, each flange portion 12
a, 12b, 12c, and 12d are formed in the same waveform as the flange portions 6a to 6d of the inner box 4 (the fourth
(See figure) Further, a metal reinforcing frame 13 as a flange portion is fitted and fixed to the upper flange portion 12a. Further, the lower flange portion 12d of the insulating frame 11 is integrally formed with protrusions 14 and 15 directed forward at its left and right end portions, respectively, and at the lower portions of each protrusion 14 and 15, respectively. Tongue piece 1
6 and 17 are integrally formed to extend. As shown in FIG. 4, the protrusion 14 has an inclined surface 14a formed on its left top, and the protrusion 15 also has an inclined surface 15a formed on its right top. . 18 is a dew proof pipe, this is insulation frame 1
It consists of a rectangular frame-shaped part 18a attached to the back surface of the flange parts 12a to 12d of 1, and connecting parts 18b and 18c led out rearward from both ends located approximately at the center of the upper side of this rectangular frame-shaped part 18a. And, the above-mentioned freezer compartment cooler 8, freezer side plates 9, 10,
Freezer unit 7 is constructed by assembling insulating frame 11, reinforcing frame 13, and dew-proofing pipe 18 in advance.

On the other hand, 19 is a metal partition plate arranged between the front edges of the inner box 6 and the freezer unit 7,
The left and right ends of this have through holes 20 and 2 corresponding to the protrusions 14 and 15 of the insulating frame 11, respectively.
1 is formed. Reference numeral 22 denotes a rectangular left side plate made of a steel plate, and on its front and rear edges, engagement recesses 23 and 24 (first engagement means) are formed by bending these parts to open to the right and rear, respectively. (see Figure 3) are formed, and the upper and lower edges are
By bending this portion, a U-shaped flange portion 25 serving as an engagement means is oriented upward and rightward, respectively.
and 26 (see Figure 3 for the flange portion 26)
is formed. 27 is a meandering condenser pipe attached to the inner surface (right side) of the left side plate 22;
Both end portions thereof are located at the upper and lower portions of the left side plate 22 near the rear end, respectively. 28 is a rectangular right side plate made of a steel plate, and the front and rear edges thereof have
Engagement recesses 29 and 30, which are engagement means, open to the left and rear, respectively, by bending these parts.
(See Fig. 3), and U-shaped flange portions 31 and 32 (flanges) are formed on the upper and lower edges, and are U-shaped flange portions 31 and 32 (flanges) that are oriented upward and leftward, respectively, by bending these portions. About part 32 3rd
(see figure) is formed. Reference numeral 33 denotes a meandering condenser pipe attached to the inner surface (left side surface) of the right side plate 28, and both ends thereof are located at the upper and lower parts of the right side plate 28, respectively, near the rear end. The front edge engaging recess 23 of the left side plate 22 and the front edge engaging recess 29 of the right side plate 28 have engaging holes corresponding to the protrusions 14 and 15 of the insulating frame 11, as shown in FIG. 23a and 29a are the respective engagement recesses 23 and 29
It is located in the inner side wall near the front. Reference numeral 34 denotes a rear plate, which is formed by vertically connecting a plate body 35 made of steel plate and a frame body 36 made of plastic which also acts as an engagement means. In the case of the plate body 35, U-shaped flange portions 37, 38 and 39 (U-shaped flange portions 37, 38 and 39) serving as engagement means directed forward are formed by bending these portions at the bottom, left and right edges of the plate body 35, respectively. 3
(see figure) is integrally formed, and by bending this part on the upper edge, the U is oriented forward.
A letter-shaped flange portion 40 is integrally formed.
An engagement recess 4 opening rearward is provided at the lower edge of the frame 36.
1 is formed, and the plate 35 and the frame 36 are integrated by press-fitting the upper edge flange portion 40 of the plate 35 into the engagement recess 41.
Incidentally, flanges 42 and 43 are integrally formed on the left end edge and the lower end edge of the frame body 36, respectively, and are oriented toward the front and serve as engagement means. Reference numeral 44 denotes a rectangular bottom plate made of plastic, and has a bulge 44a for forming a machine room at the rear thereof. As shown in FIG.
An engagement recess 46 is formed as an engagement means defined by the parallel protrusions 45a and 45b of the book, and two parallel protrusions oriented outward (leftward and rightward) are formed on the left and right edges, respectively. 47a, 47b and 48a, 4
An engagement recess 49 as an engagement means defined by 8b
and 50 are formed, and an engagement recess 52 as an engagement means defined by three parallel protrusions 51a, 51b, and 51c directed rearward on the rear end edge, and an engagement recess 52 for holding a machine room cover (not shown). Recesses 53 are formed at the top and bottom. Incidentally, the upper protrusions 47a, 48a and 51a that define the engagement recesses 49, 50 and 52 are provided with retaining protrusions 47c, 48c and 51d, respectively.

Reference numeral 54 denotes a rectangular top plate made of integrally molded plastic, and as shown in FIG. 5, engagement recesses serving as engagement means are defined by two downwardly directed rectangular frame-shaped protrusions 55a and 55b on its four peripheries. 56 is formed. Incidentally, a protrusion 55c for preventing the protrusion from coming off is formed on the protrusion 55b. Reference numeral 57 denotes a cooler for the refrigerating room made of a meandering pipe, which is disposed in the inner box 4 in a penetrating state in a penetrating upper wall of the inner box 4 in a hanging manner.

On the other hand, in FIG. 6 showing the piping configuration of the refrigeration cycle, 58 is a compressor placed in the machine room, the discharge port 58a of which is connected to the lower end of the condenser pipe 33 attached to the right side plate 28, and the suction The mouth 58b is connected to the suction pipe 59. The capacitor pipe 33 and the capacitor pipe 27 attached to the left side plate 22 have their respective upper ends connected to the connecting portions 18b and 1 of the dew prevention pipe 18.
8c, and the lower end of the condenser pipe 27 is connected to the dryer 60 and the capillary tube 6, respectively.
1 to one end of a refrigerant pipe 8b of the freezer compartment cooler 8. The other end of the refrigerant pipe 8b is connected to one end of a refrigerator compartment cooler 57, and the other end of the refrigerator compartment cooler 57 is connected to a suction pipe 59 via an accumulator 62.

In the following, a method for manufacturing the heat insulating box 1 will be described with reference to FIGS. 7 to 10, which show assembly jigs used in manufacturing the same. That is, in FIGS. 7 to 10, 63 is a rectangular frame-shaped conveyance platen, which is moved along the production line, for example, in the direction of arrow A. A pair of rail members 64 are attached between the front and rear frames of the conveyance platen 63 so as to be oriented in the front-rear direction (arrow A and counter-arrow A directions). 65 is an inner box guide installed on the rail member 64, and this is a U-shaped wall 66a.
and a fixed guide 66 having a mounting surface 66b around the outer periphery thereof, and a U-shaped wall 67a and a mounting surface 67b around the outer periphery thereof, and are provided so as to be slidable in the directions of arrow A and opposite arrow A. Slide 67 and 2
The periphery of the front opening 5 of the inner box 4 is fitted into the outer periphery of each of the U-shaped walls 66a and 67a, and the inner box 4 is placed on the mounting surfaces 66b and 67b in this state. . Also, 68 is the slide guide 6
7, which has the following configuration. That is, in FIG. 10, 69 is a positioning bar on a round bar that projects from the fixed guide 66 toward the slide guide 67, and has notches 69a formed at a plurality of locations. Reference numeral 70 denotes a round rod-shaped adjustment bar attached to the slide guide 67 so as to be perpendicular to the positioning bar 69. This adjustment bar is provided so as to be movable back and forth in the orthogonal direction, and is inserted into the notch 69a and slid. guide 67
It can be arbitrarily moved to a position where the slide of the slide guide 67 is restricted and a position where the slide guide 67 is allowed to slide by making the recess 70a of the slide guide 67 correspond to the positioning bar 69. In addition, 71 is an operating lever provided protrudingly on the adjustment bar 70, 72 is a spring that always urges the adjustment bar 70 to the insertion position into the notch 69a, and such a positioning mechanism 68
As a result, the slide guide 67 is moved to a position corresponding to the size of the inner box 4 and held at that position.
On the other hand, 73 is an inner box guide 65 on the rail member 64.
This is a freezer guide which is an inner box guide installed adjacent to the fixed guide 66. This includes a fixed guide 74 having a U-shaped wall 74a and a mounting surface 74b around its outer periphery, and a U-shaped wall 75a and its outer periphery. The freezer unit 7 is divided into two parts, including a slide guide 75 having a mounting surface 75b on the outer periphery and slidable in the directions of arrow A and counter-arrow A. The peripheral edge of the front opening (particularly the inner peripheral edge of the opening of the insulating frame 11) is fitted, and in this state, the freezer unit 7 is placed on the placing surfaces 74b and 75b. Further, 76 is a positioning mechanism for the slide guide 75, which is a positioning bar 77 similar to the positioning mechanism 68.
and an adjustment bar 78 to move the slide guide 75 to a position according to the size of the freezer unit 7 and hold it at that position. 79 is the rail member 6
A bottom plate guide is installed on the inner box guide 65 at a position adjacent to the freezer guide 67 on the inner box guide 65 so as to be able to slide in the direction of the arrow A and the direction opposite to the arrow A. It has a mounting surface 79b located at the mounting surface 79b.
When the front end edge of the bottom plate 44 is placed on the top surface b, the rising wall 79a abuts against the outer bottom surface of the bottom plate 44. In addition, each of the above mounting surfaces 66b, 67b, 74b, 75b, 79
b is a configuration located on the same plane. Reference numerals 80 and 81 denote rectangular rod-shaped rotating members supported on both sides of the conveyance platen 63 via arms 80a, 80b and 81a, 81b, respectively. 81c), it is rotated from a standby position as shown by a solid line in FIG. 9 to an operating position as shown by a two-dot chain line in the same figure. When the rotating members 80, 81 are in the standby position, their upper surfaces form mounting surfaces 80d, 81d, and in this case, the mounting surfaces 80d, 81d correspond to the respective mounting surfaces 66.
b, 67b, 74b, 75b, and 79b.

Therefore, when manufacturing the heat insulating box 1, the steps are performed in the following order. First, the transport platen 63
The partition plate 19 is placed from above between the placement surface 66b of the inner box guide 65 and the placement surface 74b of the freezer guide 73, and the inner box 4 is placed on the placement surfaces 66b, 67b of the inner box guide 65. As mentioned above, it is placed from above, and then placed on the placing surface 7 of the freezer guide 73.
4b and 75b, the freezer unit 7 is placed from above as described above. Note that when the freezer unit 7 is placed, the through holes 20 and 2 of the partition plate 19 are
1 so that the protrusions 14 and 15 of the insulating frame 11 are inserted into the frame. Next, the bottom plate guide 7
The bottom plate 44 is placed on the placement surface 79b of the bottom plate 9 as described above, and in this state, the bottom plate guide 7 is manually or automatically moved.
9 in the opposite direction of arrow A, and in response to this sliding, the lower flange portion 6b of the inner box 4 is press-fitted into the front edge engagement recess 46 of the bottom plate 44. After this, each mounting surface 80d, 81 of the rotating members 80, 81
d, the left side plate 22 and right side plate 28 are respectively placed through their respective front edges as shown by solid lines in FIG.
is rotated to the operating position shown by the two-dot chain line in FIG. Then, in response to the rotation of the rotating member 80, the left side plate 22 slides to the right on the mounting surface 80d, and is then pressed to the right by the placement surface 80d, and finally the front edge of the left side plate 22 The left flange portion 6c of the inner box 4 and the left flange portion 12c of the insulating frame 11 are connected to the engagement recess 23.
The left end portions of the partition plate 19 are press-fitted, and the lower edge engagement recess 26 of the left side plate 22 is press-fitted into the left edge engagement recess 49 of the bottom plate 44.
In this case, as shown in FIG.
The first protrusion 14 is engaged with the engagement hole 23a in the engagement recess 23, so that the left edge of the partition plate 19 is supported in a manner that prevents it from coming off. In addition, in accordance with the rotation of the rotation member 81, the right side plate 28 moves toward the placement surface 81.
d to the left, and is then pressed leftward by the mounting surface 81d, and finally the right flange portion 6d of the inner box 2 and the insulating frame 11 are pressed against the front edge engagement recess 29 of the right side plate 28. The right flange portion 12d and the right edge of the partition plate 19 are press-fitted together, and the lower edge flange portion 32 of the right side plate 28 is press-fitted into the right edge engagement recess 50 of the bottom plate 44. In this case as well, as shown in FIG.
is engaged with the engagement hole 29a in the engagement recess 29, so that the right edge of the partition plate 19 is supported in a manner that prevents it from coming off.

After this, the connection part 18b of the dew proof pipe 18,
18c and the upper ends of the condenser pipes 27, 33 and the refrigerant pipe 8b of the freezer compartment cooler 8.
One end of the refrigerator compartment cooler 57 is connected to the other end of the refrigerator compartment cooler 57 by, for example, brazing, and an accumulator 6 is connected to the other end of the refrigerator compartment cooler 57.
2. Connect the suction pipes 59 by brazing, for example. Next, the rear plate 34 is lowered from above, and the rear edge engaging recess 52 of the bottom plate 44 and the left side plate 22
The lower edge flange portion 37, left edge flange portions 38, 42, and right edge flange portions 39, 43 of the rear plate 34 are connected to the rear edge engagement recess 24 and the rear edge engagement recess 30 of the right side plate 28, respectively. Press-fit and engage. Furthermore, the top plate 54 is moved in the direction of arrow A in FIG. The upper edge flange portion 31 of the plate 28 and the upper part of the frame plate 36 of the rear plate 34 are press-fitted and engaged, respectively. After the inner box 4, freezer unit 7, partition plate 19, left side plate 22, right side plate 28, rear plate 34, bottom plate 44 and top plate 54 are integrated as described above, the A heat insulating material 82 (see Fig. 3) is foamed and filled into the space.
Complete the insulation box body 1.

According to the present embodiment described above, the inner box 4 of the heat insulating box 1, the freezer unit 7, the left side plate 22, and the right side plate 2
8 and the bottom plate 44, the partition plate 19, the inner box 4, the freezer unit 7, and the bottom plate 44 are placed from above on the inner box guide 65, freezer guide 73, and bottom plate guide 79, and then the bottom plate guide 79, and then the rotating member 80,
The left and right side plates 2 are placed on the mounting surfaces 80d and 81d of 81.
2, 28 and in this state, rotate the rotating members 80, 8.
All that is required is an extremely simple operation of rotating 1. Therefore, automation of the above assembly process can be easily realized, and the assembly jig used in this assembly process can be of a simple structure with extremely simple movements, reducing labor costs and
It is possible to reduce the cost of manufacturing equipment and reduce the manufacturing cost of the heat insulating box 1. Further, since there is no need to elastically deform the inner box 4 in the assembly process as in the conventional case, there is no possibility that the material, wall thickness, shape, etc. of the inner box 4 will be restricted. Furthermore, in the conventional assembly process, there was a problem that the assembly work involved inside the rectangular frame-shaped main body, which worsened the working posture and decreased work efficiency, but this example solves this problem. Problems can also be resolved.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but may be modified as appropriate without departing from the gist thereof, such as being applicable to, for example, a temperature-type refrigerator, refrigerated case, or frozen stocker. It can be implemented by

〔Effect of the invention〕

According to the present invention, as is clear from the above description, it is possible to provide a heat insulating box assembly jig that has an extremely simple structure and has excellent effects such as automation of the assembly process.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a perspective view of a two-temperature refrigerator, Fig. 2 is an exploded perspective view of a heat insulating box, and Fig. 3 shows a part of the lower part of the heat insulating box. 4 is a cross-sectional view of the main part of the insulation box, FIG. 5 is a longitudinal sectional front view of the upper part of the insulation box, and FIG. 6 is an exploded perspective view showing piping of the refrigeration cycle. 7 and 8 are a perspective view and a plan view, respectively, of the assembly jig, and FIGS. 9 and 10 are a vertical sectional view and a perspective view, respectively, of different main parts of the assembly jig. In the figure, 1 is a heat insulating box, 4 is an inner box, 6a to 6d are flange parts, 7 is a freezer unit (inner box), 1
2a to 12d are flange parts, 13 is a reinforcing frame (flange part), 22 is a left side plate, 23, 24 are engagement recesses (engagement means), 25, 26 are flange parts (engagement means), 28 is a right side plate , 29 and 30 are engagement recesses (engagement means), 31 and 32 are flange parts (engagement means),
34 is a rear plate, 36 is a frame (engaging means), 37, 3
8, 39, 42, 43 are flange portions (engaging means);
41 is an engagement recess (engagement means), 44 is a bottom plate, 46,
49, 50, 52 are engagement recesses (engagement means), 54
is a top plate, 56 is an engagement recess (engagement means), 65 is an inner box guide, 73 is a freezer guide (inner box guide),
79 is a bottom plate guide, 80 and 81 are rotating members, 80
d and 81d are mounting surfaces, and 82 is a heat insulating material.

Claims (1)

[Claims] 1. An inner box having a rectangular front opening periphery with an outwardly directed flange, and a front end edge with engaging means that engages with the left flange of the inner box, as well as rear, upper and lower It has a rectangular left side plate having engagement means on each edge, and an engagement means on the front edge to be engaged with the right flange of the inner box, and also on the rear, upper, and lower edges. A rectangular right side plate each having an engagement means, and engagement means on each of the left, right and lower edges to be engaged with the engagement means on both rear edges of the left and right side plates, respectively. a rectangular rear plate having engagement means on the upper and lower edges, respectively, and a lower flange portion of the inner box on each of the front, rear, left, and right edges;
A rectangular bottom plate made of plastic has engaging means that are respectively engaged with the engaging means on the lower edge of the rear plate and the engaging means on the lower edges of the left and right side plates; an upper flange portion, and a rectangular top plate made of plastic having engaging means that are respectively engaged with the upper edge engaging means of the left and right side plates and the rear plate; , an assembling jig for an insulating box that integrates a rear plate, a bottom plate, and a top plate through respective flange portions and engagement means,
An inner box guide into which the periphery of the front opening of the inner box is fitted from above, a bottom plate guide provided adjacent to the inner box guide and onto which the bottom plate is placed from above, and both sides of the inner box guide and the bottom plate guide. The left and right plates each have a mounting surface that is rotatably provided on which the front edge of each front edge is placed, and in response to the rotation, the left and right plates are moved toward the inner box and the bottom plate by the mounting surface. and a pair of rotating members that press and move the front edge engaging means and the lower edge engaging means of the left and right plates to the left and right sides of the inner box in response to pressure from the rotating members. the right flange portion and the left side of the bottom plate;
1. An assembling jig for a heat insulating box, characterized in that it is configured to be engaged with the right edge engaging means.